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Amrapali Kasabe i Vaibhav Shelar. "Pushover analysis of building using soft story at different levels". World Journal of Advanced Engineering Technology and Sciences 9, nr 1 (30.06.2023): 203–10. http://dx.doi.org/10.30574/wjaets.2023.9.1.0160.
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In India the enormous loss of life and property perceived in the last couple of decades, attributable to failure of structures instigated by earthquakes. Responsiveness is now being given to the assessment of the sufficiency of strength in framed RCC structures to resist solid ground motions. The seismic reaction of RCC building frame in terms of performance point and the earthquake forces on Reinforced building frame with the help of pushover analysis is carried out in this project. In this method of analysis a model of the building is exposed to a lateral load. Pushover analysis can afford a substantial insight into the weak links in seismic concert of a structure and we can know the weak zones in the structure. In this project effort has been made to investigate the effect of Shear Wall and Structural Wall on lateral displacement and Base Shear in RCC Frames. RCC Frames with G+13 are considered, one with soft storey and other with normal building in L- shape. The pushover analysis of the RCC building frame is carried out by structural analysis and design software ETABS.
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Bore, Miss Sapana, i Prof R. M. Desai. "Wind Analysis of RCC Tube in Tube Structure". International Journal for Research in Applied Science and Engineering Technology 10, nr 11 (30.11.2022): 1691–701. http://dx.doi.org/10.22214/ijraset.2022.47703.
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Abstract: Modern tall buildings have efficient structural systems, and utilize high-strength materials, resulting in reduced building height, and thus, become slenderer and more flexible with low damping. These flexible buildings are very sensitive to wind excitation and earthquake load causing discomfort to the building occupants. Therefore, in order to mitigate such an excitation and to improve the performance of tall buildings against wind loads and earthquake loads, the tube in tube structures and tube frame structures are the innovative and fresh concept in the tubular structures. Generally, tube in tube structures is formed by connecting peripheral frame tube and inner core tube so closely, it is not seen as a solid system but it acts like a solid surface. The total loads acting on the structures to be collectively shared between the inner and outer tubes. The tubed frames Structure are new concept for tall building. In tubed mega frames instead of one central tube several vertical tubes are carrying the lateral loads. a comparative study of tube in tube structures and tubed mega frame system with different building geometry has been done using ETABS software.
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Verma, Pankaj Kumar. "Comparative Study Seismic Analysis of RCC, Steel & Steel-Concrete Composite Frame: A Review". International Journal for Research in Applied Science and Engineering Technology 9, nr 8 (31.08.2021): 2369–72. http://dx.doi.org/10.22214/ijraset.2021.37665.
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Abstract: This study examines how composite structures are gaining popularity in developing countries. For medium and high levels in RCC buildings are no longer economical due to increased weight, range limitations and low natural frequencies and dangerous formwork. Steel and concrete composite structures are becoming increasingly popular today and are safe throughout their useful lives. Round Steel and concrete structures are the best solution for modern buildings. In this article we will discuss the various results of building construction for RCC, metal and composite construction taking into account different studies. Keyword: RCC Structure, Steel Structure, Composite Structure, Joint Displacement, Base Shear
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Kuddus, Mir Abdul, i Partha Pritom Dey. "Cost Analysis of RCC, Steel and Composite Multi-Storied Car Parking Subjected to High Wind Exposure in Bangladesh". Civil Engineering Journal 3, nr 2 (28.02.2017): 95–104. http://dx.doi.org/10.28991/cej-2017-00000076.
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Steel-concrete composite constructions in Bangladesh are nowadays very popular owing to their advantages over conventional concrete and steel constructions. Concrete structures are massive and allot more seismic weight and less deflection whereas steel structures instruct more deflections and ductility to the structure, which is beneficial in resisting earthquake and wind forces. Composite construction combines the better properties of both steel and concrete along with lesser cost, speedy construction, fire protection etc. The objective of this study was to analysis and design ground floor plus 19 storied R.C.C, Steel and Composite (steel-concrete) multi-storied parking structure’s frame of same plan using ETABS 2013 software and compare their structural parameters with estimated cost for required material. All frames are designed for same gravity and dynamic loadings. The RCC deck-slab is used in steel and composite frame. Beam and column sections are made of RCC, steel or steel-concrete composite sections. The composite construction option provided about 25 % and 18% less cost when compared to RCC and steel structure, respectively. Comparative study concludes that the composite frames are best suited among all the three types of constructions in terms of material cost and benefit added with better structural behaviour.
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Laddha, Vrunda R., Sharda P. Siddh i Prashant D. Hiwas. "Analytical Investigation of Composite Structure in Comparison of RCC Structure". IOP Conference Series: Materials Science and Engineering 1197, nr 1 (1.11.2021): 012069. http://dx.doi.org/10.1088/1757-899x/1197/1/012069.
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Abstract High rise structures becoming very common everywhere due to scarcity of land and increasing population. Though we have RCC structure system as high-rise buildings, but in RCC buildings due to bulky size of the components of the structure self-weight will be more due to the heavy density of materials. By observing the difficulties and challenges in the field of high-rise structures engineers are using efficient structural system that is Steel Concrete Composite Structure. Composite structure consists composite deck slab, composite beam and composite column. Composite Structure complies of Concrete which is good in compression and structural steel which good in tension and composition of these material makes structure better in ductility which comparatively on higher side than RCC structure. Here G+7 high rise structure is considered for analysis by ETABS software. This paper involves Analysis of Commercial building by Equivalent static method on Composite structure and RCC structure with same plan of building and same design data. The structure is in earthquake zone III and wind speed 44m/s. Analytical comparisons of both Composite and RCC frame based on structural parameters are made with help of graphs and tables. By comparing the results, we found that Steel-Concrete Composite Structures are more desirable than RCC structures.
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Shrirame, Sharad, Prof Sanjay Dhenge i Prof Girish Sawai. "Comparative Analysis of Lateral Loads Resisting System for RCC Structure". International Journal for Research in Applied Science and Engineering Technology 10, nr 5 (31.05.2022): 2267–73. http://dx.doi.org/10.22214/ijraset.2022.42719.
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Abstract: This research work focuses on comparison of seismic analysis of G+12 story buildings stiffened with shear wall at various locations. The performance of the building is analysed in Zone II, for Mumbai city. This research paper includes understanding the main zone factor that tends the structure to perform poorly during lateral moments caused by earthquake in order to achieve their appropriate behaviour under future earthquakes. The analysed structure is symmetrical, G+12, Ordinary RC moment-resting frame (OMRF). Modelling of the structure is done by using staad proV8i software. The Time period used for the seismic calculations of the structure in both the direction is achieved from the software and as per IS 1893(part I):2016 seismic analysis has conducted. The Lateral seismic forces of RC frame are carried out using equivalent static method as per IS 1893(part I): 2016. The purpose of present work is to understand that the structures need to have suitable Earthquake resisting features to safely resist large lateral forces exerted on structure during lateral movement of structure. Shear walls are efficient (model no.3), In terms of effectiveness in minimizing lateral movement and damage caused due to the earthquake in structure the conventional frame system also provides the resistance to structure but it is unable to minimise the damage caused by the earthquake in structure. A comparative analysis is done in terms of Base shear, Displacement, Axial load, Moments in Z direction in columns and maximum bending moments in beams. Keywords: Stadd-pro, seismic excitation ,ordinary RC frame structure
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Wadde, Abhishek, i Dr Uttam Awari. "Wind Analysis of RCC Tube in Tube Structure Using ETABS Software". International Journal for Research in Applied Science and Engineering Technology 10, nr 12 (31.12.2022): 2322–32. http://dx.doi.org/10.22214/ijraset.2022.48468.
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Abstract: The advancement in construction field is increased day by day. The numbers of buildings, height of building is increased. The effect of lateral load is increased with respect to the increase of height. Advance construction methods and structural systems are to be introduced to enhance the structural safety. There are different types of structural systems which are to be used to resist the effect of lateral loads on the buildings. tube, bundled tube, tube in tube, and tube mega frame structures tubular structures. A tube-in-tube structure Comprises of a peripheral framed tube and a core tube interconnected by floor slabs. The frame tube structure takes more of lateral load the efficiency of this system is derived from the great number of rigid joints acting along the periphery, creating a large tube. In which the horizontal slabs and beams connecting vertical elements are assumed as continuous connecting medium having Equivalent distributed stiffness properties. The tube-in-tube structure with central tube provides stability against lateral loading as well as gravity loading. The Static analysis is use for analysis of tubular structures and the output of the models are evaluate to have a comparative study of their wind performance in different terrain, Also, this system provides enough opening for stairways, elevators and ducts etc. It is suitable for high rise structure. The use of tube-in-tube structure allows speedy construction. It is suitable for RCC, constructions. This study is focused on wind behavior of tube in tube structure for varying terrain category in India for the parameters like wind displacement, story drift, and time period.
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Kasat, Pankaj. "Analysis of RCC Frame Structure with Change in Location of Floating Columns". International Journal for Research in Applied Science and Engineering Technology 10, nr 9 (30.09.2022): 475–79. http://dx.doi.org/10.22214/ijraset.2022.46656.
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Abstract: The objective of present study is to analyze and compare the change in location of floating column in R.C.C frame structure. The comparison of both structures is studied by calculating, finding and tabulating comparative values of displacement. The study reflects that with change in structure i.e. the behavior of structure towards earthquake changes, nodal displacement, moment, and base shear values shows drastic changes towards resistivity against seismic forces. The soft computing tool and commercial software STAAD-Pro is used for modeling and analysis also the study done over here thus helps to understand effect of earthquake on structures for achieving stable and safe structure.
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Raju, Y. Kamala, G. V. V. Satyanarayana i G. Arun Sai. "RCC Highrised Residential Buildings its Influence on Earthquake Loads". E3S Web of Conferences 184 (2020): 01107. http://dx.doi.org/10.1051/e3sconf/202018401107.
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The present decade, high rise multi-storey buildings are subjected to many external effects such as earthquake, wind loads, tidal loads, etc., in most cases high rise buildings have more vulnerable to earthquake and wind loads. Most of the reinforced concrete multi-storeyed frame buildings were heavily damaged and many of them completely collapsed during due earthquakes. RC frame buildings were severely damaged due to various deficiencies when proper codal provisions are not designed. A study is need to study the behaviour of the RC framed structure under earthquake load to reduce the damage caused by earthquake forces In this investigation a RC framed building of G+20 storeyed is considered in several seismic zones under different soils as per Indian Standard code IS 1893(part1):2016, using STAAD. Pro V8i as software tool. Finally evaluate the ultimate Base shear using Equivalent static method and Response spectrum method addressing under design forces.
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Maharjan, Rajib, i Vivek Shrestha. "Analysis of One Bay Residential Building with Combined RCC Frame and Load Bearing Wall Structures". Journal of the Institute of Engineering 13, nr 1 (22.06.2018): 117–24. http://dx.doi.org/10.3126/jie.v13i1.20356.
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The major purpose of this study is to justify construction method of a hybrid structure in core area with construction complexity due unsafe excavation conditions and tries to define its rigidity and strength. Both RCC and Frame structure transfer same load to ground through foundation but the transfer mechanism varies. In some practical condition, building construction should be carried out in compact areas with unsafe adjoining building where adequate excavation for foundation cannot be carried out. In such cases, one bay hybrid structure is proposed for construction with combined RCC frame structure and load bearing walls. In these combined cases, both structures works as same unit to transfer building load but the transfer pattern varies. The variable load transfer pattern is due to discontinuity in structural system which also effect on seismic response of the building. The placement of a masonry load bearing structure in RCC frame structure varies design of all structural components of the building. To study actual behavior of hybrid structure in various load condition and introducing cost minimization techniques of buildings structural analysis was carried using ETABS 2016 with composite structural arrangement and with induction of load bearing wall as structural component. By which seismic behavior of building in both cases was obtained as well as reduction in rebar percentage and dimensional reduction of structural components can be achieved.Journal of the Institute of Engineering, 2017, 13(1): 117-124
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Arastu, M., i K. Moin. "Seismic Analysis of Reinforced Concrete Frame Using Shake Table Test". Journal of Applied Engineering Sciences 13, nr 1 (1.04.2023): 23–26. http://dx.doi.org/10.2478/jaes-2023-0004.
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Abstract Recently, the reinforced cement concrete (RCC) frame has been one of the most commonly used structural systems for buildings in the high seismic region due to its inherent earthquake-resistant property. However, there is still a deficiency in understanding the RCC building structural system dynamic behaviour during significant earthquakes. A 1/4th scaled RCC framed building structure has been tested on the shake table in the present study. The response in terms of engineering parameters like natural time period, damping, story acceleration, and damage pattern have been reported. The 1940 EL-Centro (NS component) time history has been used for the study. The failure patterns were observed within the column-beam joints. The difference between the input signal and the output signal has been noted and found to be in good agreement with each other.
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Srivastava, Sharad, i Ganesh Jaiswal. "Analysis of Multistorey RCC Frame subjected to Mainshock and Aftershock Earthquake". International Journal for Research in Applied Science and Engineering Technology 10, nr 7 (31.07.2022): 4700–4707. http://dx.doi.org/10.22214/ijraset.2022.46053.
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Abstract: Structure analysis and design are significantly influenced by earthquake. It is believed that seismic evaluation is required for the viability and serviceability of both present and future building structures. When a structure's base is subjected to a certain type of ground motion, a time history analysis is performed to examine the dynamic reaction of the structure at each time interval. The near-field earthquake ground motion verification may have specific impacts for both forward and backward directivity. The initial's velocity and displacement motions, respectively, exhibit pulse and fling-step characteristics. Therefore, it is crucial to assess how well structures built solely to withstand the primary shock would work through future aftershocks. Using modern seismic protection systems, such as base isolations or / and supplemental dampening devices, that significantly reduce building damages during main shocks and their related aftershocks is one of the appropriate solutions to this issue. Due to changes in both static and dynamic stress that take place during the earthquake process, aftershock events are set off by the primary shock. In order to better understand the ground motion features of a sizable collection of mainshock and subsequent aftershock ground motion data recorded in accelerograph stations around the region, this study reviews pertinent literature in the field. The G+9 RCC building will be used in this study to conduct a time history analysis of the mainshock and aftershock data of the Chamoli earthquake provided by the Centre for Engineering Strong Motion Research Ground Motion Database. For designing purposes, the IS 456-2000 code is taken into consideration. Live loads are measured in accordance with IS 875-part 1, and seismic zone IV is selected for analysis in accordance with IS 1893-2016. Storey drift, base shear, joint reactions, and storey displacement are just a few of the variables that can have an impact on how well a building performs. Since each of these variables has a significant impact on how a structure responds to seismic loads, they are also taken into account when evaluating the results.
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., Puneeth Sajjan. "STUDY ON THE EFFECT OF VISCOUS DAMPER FOR RCC FRAME STRUCTURE". International Journal of Research in Engineering and Technology 05, nr 09 (25.09.2016): 31–36. http://dx.doi.org/10.15623/ijret.2016.0509005.
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Kadu, Amruta. "Seismic Analysis of RCC and Steel Building on Sloping Ground". International Journal for Research in Applied Science and Engineering Technology 9, nr VII (20.07.2021): 1753–62. http://dx.doi.org/10.22214/ijraset.2021.36732.
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It is necessary to design and analyse a structure to perform well under seismic loads and also endow with well strength, stability and ductility for seismic design. The seismic performance of high rise steel frame and RCC frame structure is analysed by equivalent static method. The advancement in building, Information, modelling has integrated design, detailing, and fabrication of steel which will result in high performance under earthquake loading. In present work various models were analysed with the help of Staad pro. And the results so obtained were plotted and compared.
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Bhoyar, Mr Moreshwar K., i Prof Harshwardhan Rangari. "Review on Analysis of RCC beam, Column Joint and RCC Shear wall using FRP strengthening on Ansys Software". International Journal for Research in Applied Science and Engineering Technology 11, nr 3 (30.06.2023): 3327–31. http://dx.doi.org/10.22214/ijraset.2023.54314.
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Abstract: After occurrence of recent earthquakes in the most of world parts, scientific committees for reducing natural disasters and research centers declared based performance design, investigation faults, retrofitting, rehabilitation, new researches are related to strengthening of structures, notice performance, importance of structure, surface of earthquake levels, considering economic and feasibility. One of streningthening method of RC frame is using FRP laminates. Beam and column where intersects is called as joint or junction. The different types of joints are classified as corner joint, exterior joint, interior jointetc. on beam column joint applying quasi-static loading on cantilever end of the beam. and study of various parameters as to be find out on corner and exteriorbeam column joint i.e. maximum stress, minimum stress, displacement and variation in stiffness of beam- column joint can be analyzed in Ansys software (FEM Software) RC shear walls are considered one of themain lateral resisting members in buildings. In recent years, FRP has been widely utilized in order to strengthen and retrofit concrete structures. Significant experimental research has been conducted over the past three decades on hysteretic behavior of beamcolumn joints of RC frames under cyclic displacement loading. The various research studies focused on corner and exterior beam column joints and their behavior, support conditions of beam-column joints. Some recent experimental studies, however, addressed beam-columnjoints of substandard RC frames with weak columns, poor anchorage of longitudinal beam bars and insufficient transverse reinforcement. the behavior ofexterior beam column joint is different than the corner beam column joint.
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Kene, Piyush. "A Comparative Study on Analysis of a Conventional Multi-Storey Building & a Monocolumn Building". International Journal for Research in Applied Science and Engineering Technology 9, nr VI (30.06.2021): 3851–59. http://dx.doi.org/10.22214/ijraset.2021.35964.
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The comparative study on analysis of RCC Frame structure supported on a single column and multi-column is done in this project. Cost comparison , Ground space comparison is done between RCC single column and RCC multi column structure .This paper presents structural modelling, stress, bending moment, shear force and displacement, deflection design considerations for a structure and it is analysed using STAAD-Pro. Various steps involved in designing of RCC Frame structure supported on a single column and multi-column by using software are Geometric Modelling, providing material properties and sectional Properties, fixing supports and boundary Conditions, providing loads & load combinations, Special Commands, Analysis Specification , Design Command and Report. The influence of plan geometry has an important role in static analysis. Maximum values of stresses, bending moments, shear forces and displacements and deflection are presented. The acting loads considered in the present analysis were dead load, Live load, floor load, and wind load. The project is to planning & analysis by using software for a multi storied building and single column building of G+3, G+7, G+15 floors. The design is done by taking in to account the requirements and standards recommended by IS code and national building rules.
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Sapate, Vishal, i Mahesh R. Chincholkar. "Tortional Effect in Vertically Mass Irregular RC Frame Structure under Response Spectrum Analysis". International Journal for Research in Applied Science and Engineering Technology 11, nr 7 (31.07.2023): 2279–86. http://dx.doi.org/10.22214/ijraset.2023.55120.
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Abstract: The structures having discontinuity like distribution of mass, stiffness and geometry of the structure are termed as Irregular structures. Irregular structures contribute a large portion of urban infrastructure. The past earthquakes have shown catastrophic effect on the buildings with irregularities. It was seen that the buildings with irregularities are more prone to earthquake then the regular building. In the present study a special case of vertical mass irregularity are discussed. Six different models including three basic cases of buildings models i.e. vertically regular structure, vertically irregular structure and vertically irregular structure with shear wall at different position are taken for analysis by Response spectrum. It has observed that, the torsion, base reaction, displacement and modal load participation ratio in structure. This study exhibits effect of mass variation aspect of RCC structure
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Srivastava, Sharad, i Dinesh Narain Srivastava. "Comparative Analysis of Multistorey RCC and Semi-Rigid Steel Frame with Cross Bracings Subjected to Mainshock and Aftershock Earthquake Sequence". IOP Conference Series: Materials Science and Engineering 1273, nr 1 (1.01.2023): 012011. http://dx.doi.org/10.1088/1757-899x/1273/1/012011.
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Abstract Strong Ground Motions have a significant impact on structural analysis and design. Seismic evaluation is deemed necessary for the quality, reliability, and feasibility of existing and developing structures. Earthquakes are even more disastrous when a mainshock is succeeded and preceded by aftershocks of higher magnitude. Most of the time, these aftershocks are ignored during analysis. In the last few decades, steel buildings have been crucial to the construction sector. On the other hand, RCC frames are commonly designed structures for commercial purposes and cost-effectiveness. IS 1893 (Part:1)-2002 Criteria for Earthquake Resistant Design of Structures and IS 13920-2016 Ductile Detailing of RC Structures Subjected to Seismic Reactions are majorly used for Seismic Analysis. Steel bracings in the structural system increase the ductility and stiffness of the frame structure. That can be arranged in a variety of ways, such as X, diagonally, alternatively, V, inverted V, K, etc. Cross bracings are used in this paper for the design of a typical multi-story (G+9) semi-rigid steel frame and a typical RCC frame is designed of the same dimensions. Both the frames are modelled and compared using ETABS software and a static nonlinear Time History analysis is executed to examine the performance of both the frames under the Mainshock and Aftershock of Chamoli earthquake. The Mainshock and Aftershock results of the Chamoli earthquake are extracted from the Centre for Engineering Strong Motion Research Ground Motion Database. Base shear, joint displacement, kinetic energy, and story displacement are a few of the variables of Time History Analysis that affect how well a building performs during mainshock and aftershock earthquakes. When analysing the outcomes, it is important to take into account that each of these factors significantly affects how a building responds to seismic loads.
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Sapate, Mr Vishal M., i Mr Nikhil S. Jadhav. "Comparative Study on Damage Index of RCC Frame Considering Fiber Discretization Technique". International Journal for Research in Applied Science and Engineering Technology 10, nr 7 (31.07.2022): 1420–27. http://dx.doi.org/10.22214/ijraset.2022.45492.
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Abstract: Damage indices which take into account both maximum deformation and cyclic effects were developed by Park and Ang. In the field of structural engineering, it’s observed that the Park and Ang damage index is mostly used for RCC structure. The damage index parameter assessed based on plastic hinge approach which is not effective to consider the coupled response between axial force and flexural moment especially in nonlinear domain. The accurate damage evaluations of structure are depending on other parameter such as, accurate modelling of frame, selection ground motion records. Masonry infill walls are widely used as partitions all over the world. Commonly masonry walls are not considered in the damage evaluation process because they are supposed to act as non-structural members or elements. Fiber discretization technique is used to consider inelastic behaviors of member. Single strut is model as infill wall in multidirectional. Results obtained from this study show that the accuracy of damage index totally depends on damage parameter consideration and modeling of building. The coupled effects give more realistic damage of structure as compared with other damage parameters.
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Rajkumar, K. C. "Experimental Investigation on Double Skin Composite Tubular Column". International Journal for Research in Applied Science and Engineering Technology 9, nr VI (14.06.2021): 755–63. http://dx.doi.org/10.22214/ijraset.2021.35079.
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RCC and steel frames have been the most common frame systems for long times whereas composite frame system has also emerged as popular system for high rise buildings for few decades. Multi-storey composite frames are generally composed of structural steel members made composite with concrete. The use of Double-Skin Tubular columns in building construction has seen renaissance in recent years due to their numerous advantages, apart from its superior structural performance making a typical composite frame structure. Fiber reinforced polymers (FRPs), a relatively new class of non-corrosive, high-strength, lightweight material, have over the past approximately 15 years emerged as practical materials for a number of structural engineering applications. FRP has become one of the most popular methods in the repair and rehabilitation of concrete infrastructure due to its ease of application and the special physical characteristics. This paper focus to determine the compressive strength of columns in different type of specimens under Axial load.
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Bajpai, Shobhit. "Earthquake Resistance Performance of a Multistorey RCC Frame Considering Two Different Positions of the Staircase". International Journal for Research in Applied Science and Engineering Technology 10, nr 9 (30.09.2022): 1252–59. http://dx.doi.org/10.22214/ijraset.2022.46806.
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Abstract: The stairs have significant influence on the seismic lateral stiffness, vibration mode and internal force of frame beam column of the reinforced concrete frame structure. In this paper, 3 analysis models have been made by E-TABS. In these models, relevant analysis has been made about the influence of stairs in 10-storey building while it has no staircase, it is near the middle of the building and while it is near the corner of the building. Results from linear analysis show that in concrete structure, it is essential to consider the modelling of staircase as it causes additional stiffness and change in coordinate of center of rigidity. These effects can be evaluated in period, stiffness, base shear, lateral load and displacement of the structure.
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., Vikram Y. Tambvekar. "IMPORTANCE OF CONCRETE IN RCC FRAME STRUCTURE FOR HIGH RISE BUILDINGS AND IMPORTANT INFRASTRUCTURES". International Journal of Research in Engineering and Technology 05, nr 32 (25.11.2016): 34–38. http://dx.doi.org/10.15623/ijret.2016.0532005.
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Islahuddin, Muhammad, R. K. Khare i Amit Melani. "Non Linear Seismic Behavior of RCC Low Rise Flat Slab Building". Journal of Structural Technology 7, nr 3 (6.12.2022): 20–25. http://dx.doi.org/10.46610/jost.2022.v07i03.004.
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The Building behaves nonlinearly as a result of both man-made and natural risks. Flat slab construction has several advantages over traditional RC frame construction. This work examines the progressive collapse analysis of a flat slab structure using a non-linear static analysis approach known as pushover analysis. In this sort of study, a computer model of a structure is exposed to a preset lateral load pattern. The modeling of a structure is done by software named ETABS, and pushover analysis is done. By doing this pushover analysis, we can identify the weak points in the structure and decide whether the specific portion of the building should be retrofitted or changed to satisfy the requirements. Pushover analysis is conducted in both positive and negative x and y directions. For each member, default hinge parameters based on the FEMA-356 and Applied Technology Council (ATC-40) criteria are applied.
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Singh, Anamika, Rajeev Singh Parihar, Abhay Kumar Jha, Barun Kumar i Rajesh Misra. "Seismic Analysis for Zone III, IV, V of (G+14) Multistorey Building with Bracings System Using Staad Pro Software". International Journal for Research in Applied Science and Engineering Technology 10, nr 12 (31.12.2022): 1968–72. http://dx.doi.org/10.22214/ijraset.2022.48391.
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Abstract: This present study focuses G +14 Simple Building model In STAAD PRO software. With beam size 300 X 400 mm and column size 400 X 500 mm this reinforced concrete building having M30 grade of Concrete and Fe415 high density steel. To study the response of building with and without bracing system. The performance of the building is analyzed in Zone III, Zone IV, Zone V. Metallic braces is the easiest of simplest way of reducing response of building which gave rise to nine models for the analysis.Model1 in -BFB- Bare frame RCC Building.Model2 in -BX1-Framed building with Bracing at the exterior side along X-direction.Model3 in -BY2- Framed building with Bracing at the exterior side along Y-direction.Model4 in -BXY3- Framed building with Bracing at the exterior side along X and Y-direction.Model5 in-BEC4- Framed building with Bracing at the exterior side around the corners. This system of bracing is used because eccentric bracing systems consist of a link element that undergoes inelastic deformation for energy dissipation. This link is possibly beam element of frame structure which is more suitable for steel structures and not for reinforced concrete structures and a shear wall is a structural panel that can withstand the impact of lateral forces on it. Lateral forces are those parallel to the wall plane and are usually wind loads and seismic loads. This building has been modeled as 3D Space frame model with six degree of freedom at each node using STAAD PRO. software for stimulation of behavior under gravity and seismic loading.
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Bhunia, Dipendu, Vipul Prakash i Ashok D. Pandey. "A Conceptual Design Approach of Coupled Shear Walls". ISRN Civil Engineering 2013 (9.10.2013): 1–28. http://dx.doi.org/10.1155/2013/161502.
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Earthquake causes considerable damage to a large number of RCC high-rise buildings and tremendous loss of life. Therefore, designers and structural engineers should ensure to offer adequate earthquake resistant provisions with regard to planning, design, and detailing in high-rise buildings to withstand the effect of an earthquake and minimize disaster. As an earthquake resistant system, the use of coupled shear walls is one of the potential options in comparison with moment resistant frame (MRF) and shear wall frame combination systems in RCC high-rise buildings. Furthermore, it is reasonably well established that it is uneconomical to design a structure considering its linear behavior during earthquake. Hence, an alternative design philosophy needs to be evolved in the Indian context to consider the postyield behavior wherein the damage state is evaluated through deformation considerations. In the present context, therefore, performance-based seismic design (PBSD) has been considered to offer significantly improved solutions as compared to the conventional design based on linear response spectrum analysis.
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Abbasi, Amir, i Shrikant Mishra. "Investigation of Building having Shear Wall and Bracings using Linear Dynamic Analysis". International Journal for Research in Applied Science and Engineering Technology 10, nr 8 (31.08.2022): 478–84. http://dx.doi.org/10.22214/ijraset.2022.46224.
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Abstract: The design and analysis of earthquake resistant structures play importance factor all over the world. Hilly regions such as Ambikapur, Koriya, Dantewada & Jagdalpur district as a part of Chhattisgarh are more vulnerable in terms of seismic collapse structure in recent years and demand of high-rise structures with irregularity as given below is increasing now day due to high land cost & infrastructure there is much need or require of earthquake stability check. The paper is about analysis of different RCC Frames along with different cases of shear wall and X-bracing. The objectives of this paper are to model the asymmetry frame with different cases in respect to location of retrofitting, to examine seismic parameters such as story shear, displacement, compressive stress, story drift in order to check stability and to validate the best suitable location for asymmetry building and finding out their limitation.
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Acharjee, Devjit, Srijani Bandyopadhyay i Debasish Bandyopadhyay. "Stability Analysis of a Real Life Tilted RCC Over Head Reservoir (Tank) considering Soil-Structure and Fluid-Structure Interaction". Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, nr 1 (19.12.2022): 1455–62. http://dx.doi.org/10.38208/acp.v1.676.
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Tilt and settlement of RCC structures with foundations over alluvial soil of greater Kolkata and surrounding Ganges Flood Basin is a frequent problem with respect to the stability of these structures. The tilt and subsequent distress have a significant effect on the overall stability of the Over Head Reservoirs (Tanks); which also depend on the nature of the supporting soil, Fluid Structure Interaction (FSI). Various NDTs can be performed to assess the condition of the concrete members, but this piecewise assessments may not adequately address the overall stability of the OHRs subjected to various loadings including lateral seismic forces, particularly for a tilted one. Thus, numerical analysis of the tilted OHR is significantly important to assess its overall stability considering its global behaviour. The present numerical study aims to evaluate the effect of the tilt on the overall stability of a real life existing RCC OHR supported on frame staging. The increase in design reinforcement demand and lateral displacement at crown top level are compared to assess the effect of tilt from the Limit State of Collapse and Limit State of Serviceability points of view. The global effect of the tilt is studied based on the changes of its fundamental period of vibrations of the OHR. Subsequently, Pushover analysis is also performed to evaluate the effect of the tilt on the various parameters e.g. base shear capacity, inelastic displacement at crown top level, global ductility. The vulnerability index based on the pushover analysis results are also compared to ascertain the effect of the tilt. Soil-Structure Interaction and Fluid-Structure Interaction have been duly considered in the Finite Element models on SAP2000 platform to study the effect of tilt on the OHR stability. It is found that the tilt plays a great role on the overall stability and safety of the frame staging OHR, which further get aggravated due to softer supporting soil and considering Fluid-Structure Interactions. The proposed stability analysis of this case study seems to have a great potential for its practical application in safety evaluation and retrofit of existing OHRs subjected to tilt.
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Swarnkar, Jagriti. "Examining Seismic Response for Rigid Building Frame Having Composite Column". International Journal for Research in Applied Science and Engineering Technology 10, nr 7 (31.07.2022): 3647–53. http://dx.doi.org/10.22214/ijraset.2022.45821.
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Abstract: Concrete filled steel tubes are generally used in Beams, Columns, Piers and caissons for deep foundations. The steel tube functions as the formwork for casting the concrete and hence, construction cost is reduced. The prime focus of the present work is to study the behavior of RCC structure under the effect of seismic loads provided with composite columns. This research study comprises of seismic analysis with the design of rigid frame with Reinforced Concrete column, Concrete encased steel and steel tube encasing concrete columns. These cases are designed based on IS 1893:2016 using ETABS software. The result shows that steel encased concrete is performing better than conventional column. The construction practices is the only difficulty arises in such of composite column.
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Negi, Ankit. "A Study on Energy Dissipation in Rcc Beam Column Joints Using Semi Rigid Connection". Mathematical Statistician and Engineering Applications 70, nr 2 (26.02.2021): 1223–36. http://dx.doi.org/10.17762/msea.v70i2.2190.
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Beam column joint failure has been linked to the partial or whole collapse of reinforced structures, according to information gathered during seismic reconnaissance. Under seismic stress, the failure of a single beam has only a limited impact, but the failure of a beam-column junction might lead to the collapse of the whole structure. The resulting economic damage and human casualties are substantial. Hence, keeping the beam and column from coming apart is crucial. Recent earthquakes have caused significant damage to important structures, and this is mostly attributable to a lack of ductility in the beam-column junction. The ductility performance was enhanced by the design of a specific moment resistant frame. There is less moment transmission and greater yielding under lateral load in steel and pre-fabricated constructions that make use of semi-rigid connections. In this project, we use an analytical approach to examine the impact of semi-rigid connections in the RCC columns and beams of reinforced concrete high-rises.
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Modi, Raghvendra R. "Seismic Performance Assessment of Masonary Infilled RC Frames by Using Staad PRO". International Journal for Research in Applied Science and Engineering Technology 10, nr 5 (31.05.2022): 3908–18. http://dx.doi.org/10.22214/ijraset.2022.43272.
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Abstract: Now a days construction of the RC frame is common because of the simplicity in construction. The masonry walls are mainly used for partition and insulation purposes rather than for structural purposes. However, during the earthquake, this filling contributes to the response of the structure and the behavior of the filling frame is different from that expected for the structure of the bare frame. The fill acts as a compression strut between column and beam. For this purpose, linear dynamic analysis were carried out on the structure of the RC masonry frame to study the influence of the resistance variation of the structure with n without a infill wall, filling effect on dynamic parameters such as the natural period, displacement and state of the hinge. In this rear-end collision effect high building is studied. All analysis are performed by the STAAD PRO v8i software. building modeling and analysis are performed on STAAD PRO v8i. For the analysis the building with G + 10 RCC frame is modeled. In this analysis the width of the strut is calculated manually according to the expression given in the FEMA-356. The infill panels are modeled as equivalent single diagonal struts. Several equations for calculation are considered for these diagonals. In this study the comparison of time verses acceleration , time verses velocity , time verses displacement with respect to the floor is made . The study shows that the influence of filling on the structure is significant. It increases the rigidity of the structure and makes the structure able to withstand a seismic region with respect to the bare frame. Keywords: Infill walls, Seismic force, base shear , STAAD Pro. , Time History, response spectrum.
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Balasubramanian, K., i K. P. Jaya. "Reverse Cyclic Loading Effect on RCC Wall-Floor Slab-Deep Beam Connection". Advances in Civil Engineering 2022 (18.07.2022): 1–14. http://dx.doi.org/10.1155/2022/8497173.
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High-rise structures are more vulnerable when subjected to lateral loading. Generally, the shear walls function as the main lateral load resistant system in high-rise structures. In the case of high-rise structures with an open ground story, the shear wall-floor slab-deep beam acts together as a rigid jointed frame connection to withstand gravity and lateral force induced by external loadings like earthquakes and wind. The wall-floor slab-deep beam connection will be subjected to a higher concentration of stresses, which is a more vulnerable area in any high-rise structure. Hence, it is necessary to design this connection with more ductility. This article presents the experimental investigations carried out to study the behavior of three different reinforcement detailing in RCC wall-floor slab-deep beam connections, such as (1) 90° bend up bars connection as per Indian Standard Code (Conventional connection), (2) U-hooks connecting the core region as per Euro code 2, and (3) proposed U-hooks with additional reinforcement in the core region transverse to the beam orientation. The additional reinforcement is provided at a distance of 50 mm from the face of the shear wall. The parameters considered for this study are load-carrying capacity, energy dissipation, ductility, and stiffness. The results were then compared with that of the conventional connection. It was found that the proposed U-hook with additional reinforcement performed better than that of the conventional connection and type 2 connection.
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Singh, Shivani, Vinayak Mishra i R. P. Singh. "Seismic response evaluation of waffle slab with and without bracing system using time history analysis". IOP Conference Series: Materials Science and Engineering 1273, nr 1 (1.01.2023): 012009. http://dx.doi.org/10.1088/1757-899x/1273/1/012009.
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Abstract In the analysis and design of structures, seismic ground motion is a significant factor. Seismic criteria consideration is necessary for serviceability and feasibility of existing as well as new structures. Time History analysis is the one in which base is subjected to a specific ground motion and dynamic response of structure is analysed at each increment of time. The bracing system increases the structure’s resistance to lateral loads by transferring load from the frame to the braces. This study uses the ETABS software to do a time history analysis on a G+4 RCC building with a waffle slab and an X-type bracing system. For designing purposes, the IS 456-2000 code is thought about. According to IS 875-part 1, live loads are measured, and IS 1893-2016 earthquake analysis is carried out. For this structure, a number of factors are analysed, including storey drift, base shear, storey stiffness, and storey displacement, among others.
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Pandey, Mr Suryakant. "Seismic Analysis of L-Shape Multi-Storey RCC Building with X-Bracing in Different Effective Location and Pattern". International Journal for Research in Applied Science and Engineering Technology 9, nr 8 (31.08.2021): 1150–70. http://dx.doi.org/10.22214/ijraset.2021.37530.
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Abstract: In this day and age of urbanization, there is a strong need for a large-scale high-rise apartment building in every city but high-rise construction systems are extremely difficult to construct in any seismic region due to the intense and disruptive nature of seismic forces. Seismic forces have the highest risk of causing the most harm to high-rise buildings. To meet this need, the Civil Engineering industry is constantly developing new groundbreaking techniques. To solve this problem RCC or steel bracings are provided in high-rise buildings which help to the low down the effect of seismic and wind forces. The main objective of this paper is to locate an effective position and pattern of the RCC X-bracing system in the L- shape multi-storey building which is subjected to seismic forces. According to a previous reference paper, X-bracing produces better results than other bracing systems. Analysis the seven types of frame models are taken – (1) Normal L-shape building without bracing, (2) Xbracing are provided at the face of L-shape building, (3) X-bracing are provided alternative pattern at the face of L-shape building from bottom to top floor, (4) X- bracing are provided zig-zag pattern at the face of L-shape building, (5) X-bracing are provided at the corner of L-shape building, (6) X-bracing are provided alternative pattern at the corner of L-shape building from bottom to the top floor, (7) X-bracing are provided zig-zag pattern at the corner of L-shape building. Developed and evaluated by response spectrum analysis method (Linear dynamic analysis) as per IS 1893-2000 using STAAD PRO V8i. In the present work G+12 storey, the L-shape frame structure is analyzed by using X-bracing. It is analyzed and the results of the Following Parameters are taken - (1) Peak storey shear, (2) Base shear, (3) Nodal displacement, (4) Maximum bending moment, (5) Total quantity of steel in the whole structure, (6) Total volume of concrete in the whole structure are evaluated and compared. Keywords: RCC Bracing, Seismic Behavior, Seismic Analysis, Peak Storey Shear, Base shear, Nodal Displacements, Maximum Bending Moment, The Total Quantity of Steel, The Total Volume of Concrete
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Sudhakar, Waghmare. "A Review: Dynamic Analysis for Controlling Seismic Response of R.C. Frame Structure by Virtual Work". International Journal for Research in Applied Science and Engineering Technology 10, nr 11 (30.11.2022): 866–69. http://dx.doi.org/10.22214/ijraset.2022.47464.
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Abstract: The Performance of The RCC Building During Earthquake Depends Upon the Distribution of Stiffness Amongst The Storeys. If The Distribution Is Non- Uniform To A Large Extend, The Performance of The Building is Poor. The Storey Stiffness is Contributed By The Columns As Well As The Brick Infill. If The Effective Storey Stiffness of A Floor is Less Than 70% of the Storey Above Or Below It , Then It Is Called The Soft Storey. It Is Learnt From The Past Earthquakes That Soft Storey Are More Vulnerable To Failure. The Study of Building Performance During Past Earthquakes Has Revealed That Maximum Failures Have Occurred In The Parking Storey. Most of the buildings were damaged and collapse during in strong earthquake hence we will have to confirm safety against the earthquake force that are affecting the structure, and determine seismic responses of such building. In this project we will analyse the G+5 building through response spectrum analysis to develop the economic design. Computer software’s are also being used for the calculation of forces, bending moment, stress, strain & deformation or deflection for a complex structural system.
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Mangi, N., D. A. Mangnejo, H. Karira, M. Kumar, A. A. Jhatial i F. R. Lakhair. "Crack Pattern Investigation in the Structural Members of a Framed Two-Floor Building due to Excavation-Induced Ground Movement". Engineering, Technology & Applied Science Research 9, nr 4 (10.08.2019): 4463–68. http://dx.doi.org/10.48084/etasr.2923.
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Increased urbanization causes traffic and parking issues especially in metropolitan cities like Karachi, London, Shanghai, etc. To accommodate parking issues for the vehicles mainly in urban areas (excavated) underground parking areas under or nearby high rise buildings are preferred. As a result of excavation, ground movements occur that have a major impact on structures, buildings, and utilities. The past research usually oversimplified surface structure as an equivalent elastic beam, which is unable to represent the behavior of a framed building realistically. In this study, the detrimental effects (i.e. crack pattern) on a two-floor RCC framed building founded on piles due to an adjacent excavation-induced ground movement are investigated. Elasto-plastic coupled-consolidation analysis was adopted. The hypoplastic constitutive model was used to capture soil behavior. It is an advanced model which is able to capture the soil unique features which are non-linear behavior, stiffness degradation (with stress, strain & path-dependent), and stress-strain dependent soil dilatancy. The concrete damaged plasticity (CDP) model was used to capture the cracking behavior in the concrete beams, columns and piles. It was revealed that the induced slope and tilting are not equal. Consequently, the frame was distorted. As a result, tension cracks were induced at the inner side of the column.
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Rizwan, Mohammed Zahid. "Effect of Bracing on Regular and Irregular RCC (G+10) Frame Structure with Different Types of Bracings under Dynamic Loading". International Journal for Research in Applied Science and Engineering Technology 8, nr 12 (31.12.2020): 317–27. http://dx.doi.org/10.22214/ijraset.2020.32498.
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Cojocaru, Radu, Jorge C. Pais, Andrei Radu i Mihai Budescu. "Modeling of Airport Rigid Pavement Structure Made of RCC and Recycled Cement Concrete for Complex Configuration of Landing Gears". Advanced Materials Research 649 (styczeń 2013): 254–57. http://dx.doi.org/10.4028/www.scientific.net/amr.649.254.
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This paper presents the results of the research undertaken by the authors in the frame of the postdoctoral program 4D-POSTDOC. After a short introduction on the actual status of structural design of airport pavements including geometrical and loading characteristics of complex loading gears, the modeling and the structural design of airport rigid pavements, constructed with conventional and various recycled materials, using the finite element method, is described. The main objective of this research program was to elaborate a design method which, beside the complex landing gear including six footprint tires, all specific parameters related with the recycled materials and with conventional and reinforce rolled compacted concrete (RCC) technologies are included. Finally, practical design diagrams for structural design of the concrete slabs, including their specific correlation function, used for the construction of the Airbus-A380 runway are presented.
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Rana, UpasanaR, SnehalV Mevada i VishalB Patel. "Seismic Risk Assessment of Asymmetric Buildings using Fragility Curves". Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, nr 1 (19.12.2022): 1727–39. http://dx.doi.org/10.38208/acp.v1.712.
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It is very important and necessary to assess the seismic risk for the buildings subjected to uncertain and highly unpredictable dynamic forces produced from earthquakes. Fragility curves are the best tools for the representation of seismic risk assessment. In the present study, risk assessment of structure subjected to seismic loading is evaluated. Further, the effects of different eccentricities are also studied for seismic risk assessment. The fragility curves are developed for G+5 storied RCC bare frame building as well as G+5 storied RCC building with shear wall. The considered buildings are subjected to ground motions of past recorded earthquakes. Buildings with different eccentricities and various structural configurations are studied for various failure criteria. The responses of the considered buildings subjected to earthquake excitations are evaluated by Incremental Dynamic Analyses. Fragility curves are developed using Monte Carlo method considering various performance levels as per ATC-40. It is observed that for immediate occupancy failure criteria, the probability of failure is increased constantly with increasing the percentage of structural eccentricity. Further, it is observed that very less variation is observed in the probability of failure under life safety and collapse prevention failure stages.
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Verma, Ankur. "Seismic Analysis and Comparative Study of Brick Wall, Shear Wall and Bare Frame on G+12 High Rise Building". International Journal for Research in Applied Science and Engineering Technology 9, nr 10 (31.10.2021): 1540–47. http://dx.doi.org/10.22214/ijraset.2021.38660.
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Abstract: Today, larger part of designs around us are built up concrete cement (RCC) outlined constructions. To forestall harm because of quake there is a need to foster powerful procedure to expand the strength and flexibility of elevated structures. Shear wall are steadier and more pliable and thus can bear more even loads. In this paper, we have proposed a relative report between block facade, shear divider and uncovered casing by using ETABS programming. This review is essentially centered around seismic conduct of G+12 building. The outcomes are talked about as far as base shear, sidelong relocation, story float, story solidness and normal period for every one of the three models. We find that shear wall has least parallel uprooting and least time span when contrasted and block facade and uncovered edge. Likewise, we track down that the shear divider model is more adaptable because of lesser float when contrasted and different models. The upsides of removal and float for shear wall is likewise not as much as block facade since the tallness of the structure increments. Keywords: shear wall, bare frame, Response spectrum, Earthquake, ETABS
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R., Balamuralikrishnan, i Ibrahim Shabbir Mohammedali. "Comparative Study on Two Storey Car Showroom Using Pre-engineered Building (PEB) Concept Based on British Standards and Euro Code". Civil Engineering Journal 5, nr 4 (28.04.2019): 881–91. http://dx.doi.org/10.28991/cej-2019-03091296.
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Majority of steel structures are used for low-rise single storey buildings mainly for industrial purpose. Steel structures are preferred for industrial buildings due to its higher strength to weight ratio as compare to RCC structures and steel structures also gives more free internal space by allowing long clear span between columns. Pre-engineered building (PEB) is a modern age concept of utilizing structural steel and optimizing the design by ensuring the economical integrity of the structure. The structural members are designed and fabricated in the factory under controlled environment to produce optimum sections by varying the thickness of the sections along the length of the member as per the bending moment requirement. The aim of the research paper is to analyses and design a PEB car showroom of two storey (G+1) using STAAD Pro in accordance to British standards (BS 5950-1:2000) and Euro codes (EC3 EN-1993-1) with wind and seismic analysis. In order to achieve the above aim of the project, two models of the car showroom were created namely British Standard (BS) model and Euro code (EC) model using STAAD Pro. The member property for BS model is assigned with tapered frame sections while the EC model is assigned with universal standard section frames. The load cases were assigned to the models for analysis include dead load, live load, wind load and seismic load. Wind load and seismic load being the critical dynamic loads that will be analyzed for the stability of the structure against lateral forces. The results from the analysis and design of the two models were within the allowable limits for ultimate and serviceability limit state since the internal stresses in all the members satisfies the unity check ratio requirements for both design codes. The dynamic analysis results suggest that EC model has higher resistance to seismic loading as compare to BS model since the maximum displacement with time in X-direction for EC model is 8.83 mm and for BS model is 10.5 mm. The total weight of the structure for BS model is 1125.431 kN and for EC model is 1214.315 kN, which makes EC model 7.9% heavier than BS model. Moreover, the total weight of all the portal frames for BS model is 457.26 kN and for EC model is 574.725 kN, which makes tapered frame sections to utilize and reduce the amount of steel by 25.7%. Therefore, BS model proved to be an economical model when compared to Euro code.
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Kumar, S. Venkata Vijaya, i N. Bhargav. "Exploration Study on Energy Dissipation in Beam and Column Joint with Semi Rigid Connection". International Journal for Research in Applied Science and Engineering Technology 10, nr 12 (31.12.2022): 2390–99. http://dx.doi.org/10.22214/ijraset.2022.48421.
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Abstract: The earthquake reconnaissance reports reveal that the failure of beam column joint has contributed to partial or complete collapse of reinforced buildings. The failure of a beam causes only localized effect whereas the failure of a beamcolumn joint causes instability of the whole building under seismic loading. This results in significant economic impact and loss of life. Hence it is essential to avoid failure of beam-column joint. The serious damage to the major structures during recent earthquakes is mainly attributed to lack of ductility in beam-column joint. In the present work, experimental investigation is carried out to study the effect of semi rigid connection in RCC beam column joints of reinforced concrete multi storey buildings. The effectiveness of semi rigid connection and effective positioning (stability approach) is analytically investigated for a typical four-bay four-storey and five-bay seven-storey RC frame with different percentage of joint connections by nonlinear static (pushover) and nonlinear dynamic (time-history) analyses. Poor performance was noted in rigid frame during the prediction of structural damage, lateralstrength and storey drift. The semi rigid connection isprovided in different places and it is found that performance of the structure enhanced in the stability approach. The stability approach exhibited improved performance in terms of roof displacement, for and semi-rigid connection.
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Zhou, Deyuan, Changtuan Guo, Xiaohan Wu i Bo Zhang. "Seismic Evaluation of a Multitower Connected Building by Using Three Software Programs with Experimental Verification". Shock and Vibration 2016 (2016): 1–18. http://dx.doi.org/10.1155/2016/8215696.
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Shanghai International Design Center (SHIDC) is a hybrid structure of steel frame and reinforced concrete core tube (SF-RCC). It is a building of unequal height two-tower system and the story lateral stiffness of two towers is different, which may result in the torsion effect. To fully evaluate structural behaviors of SHIDC under earthquakes, NosaCAD, ABAQUS, and Perform-3D, which are widely applied for nonlinear structure analysis, were used to perform elastoplastic time history analyses. Numerical results were compared with those of shake table testing. NosaCAD has function modules for transforming the nonlinear analysis model to Perform-3D and ABAQUS. These models were used in ABAQUS or Perform-3D directly. With the model transformation, seismic performances of SHIDC were fully investigated. Analyses have shown that the maximum interstory drift can satisfy the limits specified in Chinese code and the failure sequence of structural members was reasonable. It meant that the earthquake input energy can be well dissipated. The structure keeps in an undamaged state under frequent earthquakes and it does not collapse under rare earthquakes; therefore, the seismic design target is satisfied. The integrated use of multisoftware with the validation of shake table testing provides confidence for a safe design of such a complex structure.
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Bage, Bayi. "Seismic and Wind Analysis of RCC Building with Different Shape of Shear Wall and Without Shear Wall". International Journal for Research in Applied Science and Engineering Technology 10, nr 1 (31.01.2022): 678–83. http://dx.doi.org/10.22214/ijraset.2022.39468.
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Abstract: ETABS Stand for Extended Three-Dimensional Analysis of Building systems. ETABS integrates every aspect of the engineering design process. In the present situations of construction industry, the buildings that are being constructed are gaining significance, in general those with the best possible outcomes which are referred to members like beams and columns in multi storeys R.C structures. This paper deals with the seismic analysis of regular B+G+26 story building with shear wall and G+B+10 Story building with different irregular shapes considering different shapes of shear wall at different locations has been carried out. Which can be done in ETABS taking all the considerations regarding codes and other factors into account. All the buildings were analyzed with the same method as stated in IS 1893-Part-1:2016. The effect of shear walls on lateral capacity of the building are examined because the seismic analysis of a frame depends upon the location and symmetry of shear wall. Present study shows the shear wall improves not only the lateral stiffness and strength capacity but also the displacement capacity of structure. Comparison of results been done of different models by comparing the parameters such as story drift, story displacement, story stiffness and base reaction. Therefore, as far as possible irregularities in a building must be avoided. But, if irregularities have to be introduced for any reason, they must be designed properly following the conditions of IS 13920:1993. The complex shaped buildings are now days getting popular, but they carry a risk of sustaining damages during earthquakes. Keywords ETABS Software; IS Code 1892-Part-1:2016; IS Code 13920:1993; IS Code 875-Part-1 and Part-2
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Wang, Chang Qing. "Investigation on Seismic Behavior of Recycled Aggregate Concrete Structures under Dynamic Loadings". Advanced Materials Research 772 (wrzesień 2013): 149–55. http://dx.doi.org/10.4028/www.scientific.net/amr.772.149.
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Based on the ever finished investigations of physical and mechanical properties of recycled aggregate concrete (RAC), and a series of experimental studies on the durability, the fatigue behavior, mechanical behavior and the seismic behavior of RAC components. A full scale model of a one-storey block masonry structure with tie column + ring beam + cast-in-place slab system and a one fourth scaled model of a 6-storey frame structure, which are made of reinforced recycled aggregate concrete, are tested on a shaking table by subjecting it to a series of simulated seismic ground motions, and the seismic behaviors of the RAC structures were experimentally investigated. The dynamic characteristics and the seismic response were analyzed and discussed. The overall seismic performance of RCA structures are evaluated, the analysis results show that the recycled aggregate concrete structures with proper design exhibits good seismic behavior and can resist the earthquake attacks under different earthquake levels in this study. It is feasible to apply and popularize the RAC block masonry buildings less than 2 stories and the RAC frame buildings less than 6 stories in the region where the seismic fortification intensity is 8.
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Patil, S. S., i S. S. Lonawat. "The Non Linear Static Pushover Analysis of RCC Frames". Asian Review of Civil Engineering 1, nr 1 (5.05.2012): 25–29. http://dx.doi.org/10.51983/tarce-2012.1.1.2178.
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As the Developing countries move towards the implementation of Performance Based engineering philosophies in seismic design of civil structures, new seismic design provisions will require structural engineers to perform nonlinear analyses of the structures they are designing. These analyses can take the form of a full nonlinear dynamic analysis, or static nonlinear Pushover Analysis. Because of the computational time required to perform a full nonlinear dynamic analysis, the Pushover Analysis, if deemed applicable to the structure at hand, For this reason, there is a need for easy to use and accurate, nonlinear Pushover Analysis. The loads are increased until the peak response of the structure is obtained on a base shear Vs. roof displacement plot. From this plot, and other parameters representing the expected or design earthquake the maximum deformations the structure is likely to undergo during the design seismic event can be estimated.
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Verma, Prashant, i S. K. Madan. "Pushover Analaysis of Irregular Tall RCC Structures". Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, nr 1 (19.12.2022): 1389–95. http://dx.doi.org/10.38208/acp.v1.668.
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The paper is based on the study of the Response of Irregular Plan Tall RCC structures by Pushover Analysis in order to find the Base Shear, Pushover Curve, Performance limit, Shear force Diagrams, Bending Moment of the structure. Nonlinear Static Analysis, is also called as “pushover analysis”, and is also regarded as the most widely used analysis method for estimation of performance of Irregular tall RCC structures. Most of the significant Seismic Codes which proposes methods for seismic analysis of new or existing tall RCC Structures have been originally defined for simple regular structures. Therefore the analysis of the seismic response of irregular Tall RCC Structures is difficult due to nonlinear and inelastic response of the structures and more difficult than that of regular structures. Most of the codes (IS 1893 (Part 1) 2016[1], ATC-40 1996[2], EC8-1 2004[3]) uses the concept of “regularity”, taking into account distribution of mass, stiffness and strength in the structures, both in plan and in elevation. But real structures seldom act in accordance with these regularity requirements, resulting in a narrowly dependable application of the basic non-linear static analysis. For the study we are considering two G+19 storey T shaped and U shaped irregular tall framed RCC structures having height of 68 meters each and storey height of 3.3 meters. Pushover Analysis is carried out using shear walls at different locations in the structure. The objective of this study is to finds out which irregular plan tall structure is the most efficacious in resisting lateral loads. The software used for modelling and analysis is ETABS 2017.
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Duan, Hong Xia, i Shang Zhang. "Study on Design Measure of Seismic Capacity Design in R.C. Mega-Frame Structures". Applied Mechanics and Materials 368-370 (sierpień 2013): 1786–93. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.1786.
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This paper explores the design method of several typical mega plane frames, with the variables being the combination of varying amplification coefficient of moment at bottom sections of ground floor columns of the secondary frame on the main beams. The elastic-plastic dynamic analysis program Drain-2d+ of the plane structure is used to carry out the elastic-plastic time-history analysis for each typical mega-frame under the earthquake action. Based on the analysis, the deformation characteristics of the mega-frame, the emerging of the plastic hinge and the weak point of the overall structure under the earthquake action is developed, from which the correct method of obtaining the design value of amplification coefficient of moments at bottom sections of ground floor columns of the secondary frame on the main beams is concluded. The reasonable design values are recommended as the basis to provide some suggestions for the design of the reinforced concrete mega-frame structure.
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Syed, Zubair I., Osama A. Mohamed, Kumail Murad i Manish Kewalramani. "Performance of Earthquake-resistant RCC Frame Structures under Blast Explosions". Procedia Engineering 180 (2017): 82–90. http://dx.doi.org/10.1016/j.proeng.2017.04.167.
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Alomari, J. A. "Effect of the Presence of Basements on the Vibration Period and Other Seismic Responses of R.C. Frames". Engineering, Technology & Applied Science Research 9, nr 5 (9.10.2019): 4712–17. http://dx.doi.org/10.48084/etasr.3005.
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The soil-structure interaction (SSI) of R. C. building frames including basements below ground level has been the subject of extended research, mostly in the form of theoretical dynamic analysis. There are different issues concerned with this type of work, as e.g. the location of the base of the structure. Usually, the base of the structure in dynamic analysis or according to the codes is the level at which the lateral displacement is zero. According to this definition, and with the presence of basement floors and the soil mass below, the ground level may not be the base of the structure. The soil stiffness around basement walls has a great effect on the lateral displacement of the basement floor. Another issue is the effect of the presence of the basement floors on the dynamic behavior of the structure. A third issue is the effect of the soil around the basement walls and the soil mass below the foundation in general, which is known as the SSI. In this paper, 3-dimensional regular building frames subjected to seismic loading are analyzed using SAP2000 software. The first frame is a 5-floor, 3-D frame without including the soil mass below the raft foundation and without a basement floor. The second frame is the same frame with a basement floor and with consideration of the soil mass below the raft foundation and around the walls of the basement floor. The third frame is the same frame with consideration of the soil mass below the raft foundation but without the basement floor. Results of the seismic time history analysis and UBC97 response spectrum analysis are presented and discussed.
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Jose, Sajan K., G. S. Anjali, Aarya S. Nair, D. A. Adithya, Ananya Sony i A. S. Arunima. "Fixed and Base Isolated Framed Structures: A Comparative Study". Journal of Physics: Conference Series 2070, nr 1 (1.11.2021): 012198. http://dx.doi.org/10.1088/1742-6596/2070/1/012198.
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Abstract Necessity of constructing multi-storied buildings is increasing these days. But they are more prone to severe damage due to earthquakes. Base isolation is one of the most powerful tools pertaining to the passive structural vibration control technologies. The structure above the ground, is separated from the effects of earthquake forces by introducing a mechanism that helps the structure to hover. This project deals with analysis of 10 storey RCC, Steel and Composite structures of different shapes with and without base isolation in various seismic zones by Response Spectrum Method using ETABS software. Lead rubber bearings designed as per UBC97 was used for base isolation. Plus shape was found to be most suitable for base isolation for RC structure, whereas for steel and composite structures rectangular and hollow shapes were found suitable. It was also observed that concrete structure performs best when base isolated, compared to other structures.