Готові списки джерел за темами / RCC BEAMS

Добірка наукової літератури з теми "RCC BEAMS"

Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "RCC BEAMS"

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Patkar, Aniket, and Santosh Mukkawar. "Break even analysis & response of longer span frames with or without post-tensioned beams in multipurpose hall." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (November 1, 2021): 012011. http://dx.doi.org/10.1088/1757-899x/1197/1/012011.

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Abstract In this paper analyzed the RC a nd PT Beam against variation in the clear span length of the beam. This work includes the design and estimate of Cost/Beam from 5m span up to 15m span length of the beam. Also, The response of the frame following two variation in its modelling. Initially, The primary model consists of a conventional RCC frame with all beams and columns as RCC. The secondarily model considers peripheral beams as RCC and interior beams with PT. Such as ETABS software used to designed RC beam element and ADAPT-PTRC used to designed PT beam element. However it has been note that variation of cost with respect to the span of beam where the break-even point between RCC and PT technique is approx 7m Span. Also the control on deflection of beam by restrict the depth of beam by using unbonded Post-tensioned prestress concrete beam method. There is very good understand all aspects PT beam better than as compared with to RC beam in deflection against longer span length of beams. This paper gives suggestion about to reach a decidedly conclusion regarding which technique is superior over one another.
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2

Durairaj, Ramkumar, Thirumurugan Varatharajan, Satyanarayanan Kachabeswara Srinivasan, Beulah Gnana Ananthi Gurupatham, and Krishanu Roy. "Experimental Investigation on Flexural Behaviour of Sustainable Reinforced Concrete Beam with a Smart Mortar Layer." Journal of Composites Science 7, no. 4 (March 23, 2023): 132. http://dx.doi.org/10.3390/jcs7040132.

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This paper deals with an experimental study of the flexural behavior of sustainable reinforced cement concrete (RCC) beams with a smart mortar layer attached to the concrete mixture. In total, nine RCC beams were cast and tested. Two types of reinforced concrete beams were cast, and three different beams of sizes 1000 × 150 × 200 mm and six different beams of sizes 1500 × 100 × 250 mm were considered. The flexural behavior of these RCC beams was studied in detail. The electrical resistivity of these beams was also calculated, which was derived from the smart mortar layer. Research on the application of smart mortars within structural members is limited. The experimental results showed that the smart mortar layer could sense the damage in the RCC beams and infer the damage through the electrical measurement values, making the beam more sustainable. It was also observed that the relationship between the load and the fractional change in electrical resistance was linear. The fractional change in electrical resistivity was found to steadily increase with the increase in initial loading. A significant decrease in the fractional change in electrical resistivity was seen as the load approached failure. When a layer of mortar with brass fiber was added to the mortar paste, the ultimate load at failure was observed and compared with the reference beam specimen using Araldite paste. Compared to the hybrid brass-carbon fiber-added mortar layer, the brass fiber-added mortar layer increased the fractional change in the electrical resistivity values by 14–18%. Similarly, the ultimate load at failure was increased by 3–8% in the brass fiber-added mortar layer when compared to the hybrid brass-carbon fiber-added mortar layer. Failure of the beam was indicated by a sudden drop in the fractional change in electrical resistivity values.
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Arish Pandi, Udaya Kumar, Riya Nunu, and Ajay, Ms.J.S Minimol. "EXPERIMENTAL STUDY ON FLEXURAL BEHAVIOR OF GEOPOLYMER RCC BEAMS USING BOTTOM ASH." international journal of engineering technology and management sciences 7, no. 4 (2023): 270–74. http://dx.doi.org/10.46647/ijetms.2023.v07i04.037.

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Bottom ash is formed in coal furnaces. It is made from agglomerated ash particles that too large to be carried in the flue gases and fall through open grates to an ash hopper at the bottom of the furnace. Bottom ash is mainly comprised of fused coarser particles. These particles are quite porous and look like volcanic lava. Bottom ash forms up to 25% of the total ash while the fly ash is remaining 75%. The present work deals with flexural behavior of bottom ash geopolymer reinforced concrete beam. A total of six beams were cast, in which three beams were control reinforced concrete beams and thee beams were bottom ash geopolymer reinforced concrete beam. bottom ash geopolymer reinforced concrete beamwas cured at ambient temperature. The load carrying capacity, load deflection behavior and initial stiffness capacity of beams were arrived and compared with control reinforced cement concrete (RCC) specimens
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Nahar, Tahmina Tasnim, and Md Motiur Rahman. "Strengthening of RCC Beams Using Bamboo Sticks." International Journal of Advanced Science and Technology 79 (June 30, 2015): 15–24. http://dx.doi.org/10.14257/ijast.2015.79.02.

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Namdev, Vidur, and Gaurav Jain. "Experimental study of corrosion inhibition of RCC element using glass FRP mats." Journal of Physics: Conference Series 2484, no. 1 (May 1, 2023): 012017. http://dx.doi.org/10.1088/1742-6596/2484/1/012017.

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Abstract The corrosion of steel reinforced bars has been the main cause of affecting the strength of structural elements. An investigation on corrosion inducement at large scale on reinforced concrete beams by impressed current technique and their strengthening using Glass Fibre Reinforced polymer sheets. 5 Beams (1 uncovered + 4 covered with GFRP mats having different patterns) have been provided an accelerated environment to corrode, then tested to structural failure. The accelerated corrosion has been performed by dipping the beam into 5% NaCl solution upto half depth so as to target only the bottom rebar. The cathode has been fixed in the tub along with the beam as anode. An external power supply has been provided to supply a constant voltage of 15 V. One beam of each pattern and one controlled beam have been subjected to accelerated corrosion regime. After 150 hours of accelerated corrosion the beams have been subjected to Rebound hammer and Ultrasonic pulse velocity test i.e. non-destructive testing. After this beams have been subjected to Destructive testing like centre-point load flexure test. The decrease in area of steel reinforcement has been calculated using Faraday’s Law. Since the presence of Chloride ions in de-icing salts is the major cause the breakdown of the passive layer which is responsible to initiate corrosion. It only takes place if chlorides, oxygen and moisture are present in sufficient quantities at the level of reinforcing steel. Glass Fibre Reinforced polymer sheets have been sheathed around beams to protect and strengthen them from the loss of shear strength and confinement due to the corrosion of stirrups. Glass FRP’s are unaffected by electrochemical and electromechanical degradation. GFRP’s have corrosive inertia for aggressive corrosive effects of acids, alkalis, salts and similar aggregates under a wide range of temperatures. GFRP’s can be applied on the surface of concrete with the little apprehension of environmental degradation. Moreover, the FRP wraps provide a protective layer that may resist further corrosion of steel.
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Shanmughan, Suchithra, Sampathkumar Velusamy, Jothi Lakshmi Nallasamy, Kothai Palanisamy Selvakumar, Pradeep Thirumoorthy, M. M. Saravanan, Haripriya Sakthivel, Mageshkumar Periyasamy, and Ramachandran Kasirajan. "Critical Study on Corrosion Inhibitors in U-Shaped RCC Beams." Advances in Materials Science and Engineering 2022 (May 29, 2022): 1–8. http://dx.doi.org/10.1155/2022/4762524.

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In most structural failures, deterioration of reinforced concrete structure is due to corrosion of reinforcing bars. Ingress of chloride ions and reaction of carbon dioxide with the cement paste due to poor-quality concrete or inadequate cover are the main causes of corrosion. Corrosion can be reduced by using high-quality concrete and providing proper cover to reinforcement. In addition, corrosion inhibitors are used to protect the reinforcement in order to extend the service life of concrete structures. This research work is focused on determining the effectiveness of corrosion inhibitors under cracked and uncracked sections of U-shaped beam. The U-shaped beam concept was used in this study, which helps to develop the crack width within 0.3 mm as per IS: 456 code provision. The two vertical stubs of the U-shaped beam were stressed in order to generate the cracks at the soffit of the beam. Then, the beams are tested for accelerated corrosion along with the half-cell potential meter calculations for the corrosion potential measurement.
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Shanthi Vengadeshwari, R., H. N. Jagannatha Reddy, and R. Prabhakara. "Experimental investigation on influence of hybrid fibers in flexural behavior of reinforced concrete beams." Cement Wapno Beton 27, no. 1 (2022): 59–70. http://dx.doi.org/10.32047/cwb.2022.27.1.5.

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Addition of fiber is a promising solution, to enhance the flexural behaviour of reinforced cement concrete [RCC] beams. It improves the peak load, ductility and energy absorption characteristics of RCC. Ineffective mono fibers in the concrete perform very effective, when combined through the hybridization and contribute towards the strength. Fiber hybridization offers appreciable improvement in fresh and hardened properties of concrete. To achieve optimum performance, synergetic effect of fibers is more important. Incorporation of two fibers in concrete matrix, bridges the cracks effectively. Hence to investigate the effect fiber hybridization in the flexural performance, RCC beams were cast, experimented and the results were compared with the control beams. In the present study, it is intended to evaluate and compare the impact of steel and basalt fibers in mono form and hybrid form, on the flexural parameters such as first crack load, load response behaviour, ductility, crack width and flexural strength of RCC beams. To evaluate the mechanical properties of M40 grade fiber reinforced concrete, volume fractions chosen were 0.25%, 0.5% and 0.75%. Comparatively addition of basalt fibers with steel fibers, improves synergetic response to a considerable extent. From overall assessment of the mechanical properties, it was established that the combination of basalt and steel fibers at 0.25% and 0.75% respectively, produced optimum results. Optimum volume fraction of fibers identified is used in the casting of RCC beams. Wherever possible, flexural parameters were cross checked, with Indian Standards.
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., Markandeya Raju Ponnada. "PERFORMANCE OF RCC BEAMS WITH AND WITHOUT CURTAILMENT." International Journal of Research in Engineering and Technology 04, no. 25 (December 25, 2015): 70–74. http://dx.doi.org/10.15623/ijret.2015.0425011.

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Kasare, Ms Suchita S., and Dr Tushar G. Shende. "Review on Comparison between Steel, RCC and Composite Structure." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (June 30, 2023): 2813–18. http://dx.doi.org/10.22214/ijraset.2023.54157.

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Abstract: In India, plain concrete is a very common material in construction, especially in medium and low-rise buildings. Steel is also widely used in high-rise buildings, and composite construction is not as popular, but it is possible that composite construction will be more beneficial in medium and high-rise buildings. Reinforced concrete is a widely used construction material. Steel beams are embedded in concrete to obtain an efficient composite material, reinforced concrete. Composite construction is known for two load-bearing structural parts that are securely connected and bent into a single unit. Composite structure is considered one of the most economical and short-lived structures compared to RCC and steel structures. A composite structure mainly consists of a column with an I-section enclosed or embedded in concrete or concrete and steel filled steel tube. Part I as beam and deck plate consisting of cold deck steel plates and mortar. The beams are connected to the deck slab with shear joints that have strength and fire resistance.
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Ajwad, A., U. Ilyas, N. Khadim, Abdullah, M. U. Rashid, and A. Aqdas. "Restoring Initially Cracked Reinforced Concrete Beams utilizing Carbon Fiber Reinforced Polymer Strips." NFC IEFR Journal of Engineering and Scientific Research 7, no. 1 (December 1, 2019): 30–34. http://dx.doi.org/10.24081//nijesr.2019.1.0006.

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Carbon fiber reinforced polymer (CFRP) strips are widely used all over the globe as a repair and strengthening material for concrete elements. This paper looks at comparison of numerous methods to rehabilitate concrete beams with the use of CFRP sheet strips. This research work consists of 4 under-reinforced, properly cured RCC beams under two point loading test. One beam was loaded till failure, which was considered the control beam for comparison. Other 3 beams were load till the appearance of initial crack, which normally occurred at third-quarters of failure load and then repaired with different ratios and design of CFRP sheet strips. Afterwards, the repaired beams were loaded again till failure and the results were compared with control beam. Deflections and ultimate load were noted for all concrete beams. It was found out the use of CFRP sheet strips did increase the maximum load bearing capacity of cracked beams, although their behavior was more brittle as compared with control beam.
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Більше джерел

Дисертації з теми "RCC BEAMS"

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Hassanen, Mahmoud A. H. "Behaviour of R.C. beams upgraded with externally bonded steel or FRP plates." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/7365.

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The structural behaviour of simply supported reinforced concrete (R.C.) beams strengthened in flexure by externally bonded steel or fibre reinforced plastic (FRP) plates has been investigated. A novel theoretical model coupled with simple (hence, practical) procedure(s) for designing such beams against premature plate peeling failure has been developed. The theoretical model and the design procedures have been validated by an extensive number (169) of mainly large-scale test data (using steel or FRP plates) from other sources. The effects of variations in the magnitude of Young's modulus for FRP plates on the potential changes in the flexural ultimate load of R. C. beams with externally bonded FRP plates, in the absence and/or presence of plate peeling, have been investigated in some detail with the theoretical predictions of various failure loads and associated modes of failure supported by an extensive number of test results from other sources. Moreover, brief theoretical parametric studies for other first order composite beam design parameters have also been carried out in order to clarify the effects of variations in such parameters on the predicted modes of failure. It has been shown (both, theoretically and by using large scale experimental data) that the load bearing capacity for a plated beam could (under certain circumstances) be significantly lower than even that for the corresponding unplated beam with the mode of failure being of an undesirable brittle nature. Such brittle failures can obviously have serious implications in practice, where this method has been used extensively for upgrading both bridges and buildings in a number of countries, with the design calculations very often not having properly accounted for the possible occurrence of premature plate peeling phenomenon, especially when FRP plates have been used. Further work in this area included a quantitative theoretical insight into the effect of pre-cracking of the beams (under service conditions) on the ultimate plate peeling load. A critical quantitative examination of a number of previously available theoretical models, as proposed by others, has also been carried out, and some of these models for predicting the plate peeling failure of R. C. beams have been shown to suffer from rather serious shortcomings.
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2

Ohkawa, Tomohiro. "Beam transport of a high-intensity beam from the linac to RCS of J-PARC." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/126569.

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Steele, John Phillip. "Composite RCS frame systems: construction and peformance." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/181.

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The objective of this research program is to further evaluate the performance and constructability of reinforced concrete (RC) column-steel beam-slab systems (RCS) for use in low- to mid-rise space frame buildings located in regions of high wind loads and/or moderate seismicity. To better understand these systems, two full scale RCS cruciform specimens were tested under bidirectional quasi-static reversed cyclic loading. The experimental portion of this research program included the construction and testing of two full-scale cruciform specimens with identical overall dimensions but with different joint detailing. The two joint details evaluated were joint cover plates and face bearing plates with localized transverse ties. The construction process was recorded in detail and related to actual field construction practices. The specimens were tested experimentally in quasi-static reversed cyclic loading in both orthogonal loading directions while a constant axial force was applied to the column, to simulate the wind loads in a subassembly of a prototype building. To compliment the experimental work, nonlinear analyses were performed to evaluate the specimen strength and hysteretic degradation parameters for RCS systems. In addition, current recommendations in the literature on the design of RCS joints were used to estimate specimen joint strength and were compared with the experimental findings.
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Annaluru, Arun Tejaswee. "Beam optics transport and fundamental processes involving a charge breeder in the upgraded SPIRAL1 facility." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC218.

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La thèse décrit avec beaucoup de détails les efforts déployés pour comprendre les processus physiques à l’intérieur du Booster de Charge SPIRAL1 (SP1 CB). Cet appareil accepte les faisceaux d’ions mono-chargés de différentes masses et augmente leur charge vers des états plus élevés. Dans le cadre de la mise à niveau de SPIRAL1, la R&D autour de la technique 1+/N+ présente un intérêt primordial pour optimiser les rendements des faisceaux d’ions radioactifs (RIB). Dans ce contexte, la thèse commence par une présentation théorique des ensembles cible-source de l’installations SPIRAL1, de la ligne de transport de faisceaux à basse énergie et des principes de la physique des plasmas pour la production d’ions fortement chargés dans les plasmas de source d’ions RCE (Résonance Cyclotronique Electronique). Ensuite, il y a une description des enjeux technologiques concernant la technique d’augmentation de charge 1+/ N+. Dans le chapitre suivant, les effets du gradient de champ magnétique axial, de la position du tube de décélération et de l’émittance du faisceau1+ ont été étudiés pour comprendre leur influence sur les performances du SP1 CB (efficacité de la transformation). Il a été également déduit des observations que l’efficacité de la transformation s’améliore lorsque l’émittance du faisceau 1+ est faible et que la position du tube de décélération est proche de l’entrée du SP1 CB. En parallèle, les temps de la transformation 1+/N+ pour le potassium (1 +, 2+, 4 + et 9+) ont été mesurés en pulsant le faisceau de K^1+ injecté. Les résultats de cette campagne expérimentale ont permis d’extraire les paramètres de réglage optimaux du SP1 CB qui permettent de minimiser la valeur du temps de la transformation tout en maximisant son efficacité.Afin d’étudier le transport du faisceau d’ions 1+ à travers le SP1 CB et les mécanismes physiques fondamentaux impliqués dans le processus d’augmentation de charges, plusieurs expériences ont été menées dans le cadre de cette thèse : interaction de faisceaux d’ions 1+ de différentes masses (Na^+ et K^+) dans deux plasmas RCE fait d’He et d’O_2. Les données de ces expériences (potentiels, émittance du faisceau 1+, position du tube de décélération, champ magnétique et pressions) ont été collectées et utilisées en tant que données d’entrée dans les outils de simulations numériques suivants :SIMION 3D, TraceWin et MCBC. Les simulations ont été effectuées en trois étapes: i) simulation de la transmission du faisceau 1+ à travers le SP1 CB pour chercher les lieux des pertes des ions, elle a montré un bon accord avec les résultats expérimentaux. ii) simulation de la transmission du faisceau1+ à travers une carte de potentiel reflétant la présence du plasma RCE (sans collisions) ; ça a permis de reproduire les courbes DeltaV pour les états de charge 1+ et 2+. Elle a également révélé le rôle important joué par les collisions coulombiennes dans le processus d’augmentation de charge, concluant à une analyse plus détaillée nécessaire à l’aide d’un code type Monte-Carlo (MCBC). iii) Code MCBC incluant les collisions coulombiennes du faisceau d’ions 1+ injecté dans un plasma RCE et les processus atomiques incluant l’ionisation simple et l’échange de charge. Le modèle peut reproduire les courbes expérimentales impliquant les faibles états de charge (1+ et 2+) en faisant varier chaque paramètre du plasma de manière indépendante. Une nouvelle stratégie de simulation a été développée pour estimer les paramètres du plasma à partir de ce code et des comparaisons avec les mesures expérimentales. Le résultat de ces simulations a démontré que la température des ions, la densité du plasma et la qualité du faisceau d’ions 1+ sont les paramètres critiques influant fortement sur la capture des ions 1+ et ils expliquent les différentes efficacités mesurées de la transformation 1+/N+ des Na^q+ et K^q+ dans le SP1 CB
The thesis describes with a great deal of details the efforts done to understand the physical processes inside the SPIRAL1 ECR charge breeder. This device accepts the mono-charged ion beams of different masses and charge bred them to higher charge states. In the framework of the SPIRAL1 upgrade, the R&D of charge breeding technique is of primary interest for optimizing the yields of radioactive ion beams (RIBs). In this context, the thesis begins with a theoretical discussion dealing with the different Target Ion Sources (TIS) at upgraded SPIRAL1 facility, Low Energy Beam Transport system and fundamentals of plasma physics relevant for the production of highly charged ions in ECR ion source plasmas. This is followed by description of the technological issues affecting the 1+/N+ charge breeding technique. In the final chapter, the effect of axial magnetic field gradient, position of deceleration tube and 1+ beam emittance were studied to understand their influence on the performance of the SP1 CB (charge breeding efficiency). The optimization of axial magnetic field gradient shows that the charge breeding efficiency is strongly influenced by the variation of the two soft iron rings positions around the permanent magnet hexapole. It has been deduced from the observations that the charge breeding efficiency improves when the emittance of 1+ beam is smaller and the position of deceleration tube is close to the entrance of SP1 CB. At the same time, the charge breeding times of K charge states (1+,2+,4+ and 9+) were estimated by pulsing the injected K^1+ beam. The results from these investigations revealed the optimum SP1 CB tuning parameters that can minimize the value of charge breeding time and maximize the charge breeding efficiency of the high charge states of K.In order to investigate the 1+ ion beam transport (shooting through mode) through the SP1 ECR charge breeder and the fundamental physical mechanisms involved in charge breeding process, several experiments were carried out in the framework of this thesis (the interaction of 1+ ion beam of different masses (Na^+ and K^+) in different background plasma species (He and O_2)). The data from these experiments (potentials, emittance of 1+ beam, deceleration tube position, magnetic field and pressures) were collected and given as inputs to the numerical simulation tools (SIMION, TraceWin and MCBC). The simulations were performed in three steps: i) simulation of the 1+ beam transmission through the breeder to verify the ion losses and showed good agreement with the experimental results. ii) simulation of 1+ beam transmission through a potential map that reflects the presence of the ECR plasma (without collisions) and reproduced the DeltaV curves of 1+ and 2+. It also revealed the role of Coulomb collisions in the charge breeding process leading to a necessary detailed analysis using Monte-Carlo Charge Breeding code (MCBC). iii) MCBC models Coulomb collisions of the injected 1+ ion beam in an ECR plasma and atomic processes which includes ionization and charge exchange. The code finally able to reproduce the low charge state (1+ and 2+) experimental trends by varying each plasma parameter (plasma density, ion temperature and electron temperature) independently. A novel simulation strategy has been developed to estimate the plasma parameters from charge breeding simulations. Finally, Simulations demonstrated that the ion temperature, the plasma density and 1+ ion beam quality as critical parameters influencing the 1+ ion capture and the reasons for the difference in charge breeding efficiencies between Na (in Helium plasma) and K (in Helium and Oxygen plasma) species were discussed
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Grimard, Brently Allan. "Comparison of clinical, periapical radiograph and cone beam volume tomography measurement techniques for assessing bone level changes following regenerative periodontal therapy a thesis /." San Antonio : UTHSC, 2008. http://learningobjects.library.uthscsa.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=34&CISOBOX=1&REC=1.

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Ruiz, González Néstor A. "Use of GAFCHROMIC® EBT film for in-water measurements of surface dose, buildup region, and other dosimetric parameters of 6, 9, 12, 16, and 20 MeV electron beams a thesis /." San Antonio : UTHSC, 2008. http://learningobjects.library.uthscsa.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=38&CISOBOX=1&REC=1.

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7

Hanna, Rachelle. "Transport de charges et mécanismes de relaxation dans les matériaux diélectriques à usage spatial." Thesis, Toulouse, ISAE, 2012. http://www.theses.fr/2012ESAE0026.

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Анотація:
Comprendre et modéliser le comportement des matériaux sous irradiation électronique est un enjeu important pour l’industrie spatiale. La fiabilité des satellites nécessite de maîtriser et prédire les potentiels de surface s'établissant sur les diélectriques. Ce travail de doctorat a donc pour objectif de caractériser et de modéliser les différents mécanismes physiques (en surface et en volume) gouvernant le potentiel de charges dans les matériaux polymères spatiaux tels que le Téflon® FEP et le Kapton® HN. La mise au point d'un nouveau dispositif et d'un protocole expérimental a permis de corroborer l'existence d’une conductivité latérale des charges, souvent négligée dans les modèles physiques et numériques. Les études paramétriques, révélant l’influence de l’énergie et le flux des électrons incidents, ont permis de brosser un portrait des processus mis en jeu pour le transport (par saut ou par piégeage/dépiégeage) de charges en surface. A la lumière de cette étude, une conductivité équivalente est extraite, assimilant le matériau à un système prenant en compte les mécanismes de transport volumique et surfacique. L'analyse des évolutions non-monotones de potentiel mesurées sur les polymères spatiaux en condition spatiale a permis de révéler une dépendance de la conductivité volumique induite sous irradiation avec la dose reçue. L'étude paramétrique réalisée sur les mécanismes de transport en volume révèle une influence minoritaire du déplacement du barycentre de charges et du vieillissement physicochimique. Un modèle «0D» à un seul niveau de pièges, prenant en compte les mécanismes de piégeage/dépiégeage et recombinaison entre les porteurs de charges, a été développé. Ce modèle simplifié permet de reproduire qualitativement les évolutions de potentiel expérimentales en fonction du débit de dose et lors d'irradiations successives
Charging behaviours of space dielectric materials, under electron beam irradiation, is of special interest for future spacecraft needs, since this mechanism could induce electrostatic discharges and consequently damages on the sensitive systems on board. In order to assess the risks of charging and discharging, this work aims at understanding the overall charge transport mechanisms and predicting the electrical behaviour of the insulator materials, especially Teflon® FEP and Kapton® HN. For an optimized prediction, the first part of our work is thus to check whether lateral conduction process can take place in the overall charge transport mechanism. Through the definition of a new experimental set-up and protocol, we have been able to discriminate between lateral and bulk conductivity and to reveal the presence of lateral conductivity that is enhanced by radiation ionization processes. We have been able to demonstrate as well that lateral intrinsic conductivity is enhanced with the increase current density and when approaching the sample surface. The second part of our work deals with the characterization of the electrical charging behaviour of Teflon® FEP under multi-energetic electron beam irradiation and the modelling of the overall bulk charge transport mechanisms. An experimental study on charge potential evolution as a function of electron spectrum, electric field, relaxation time, dose and dose rate, was performed. A numerical model has been developed to describe the effect of the different abovementioned mechanisms on the evolution of the surface potential. This model agrees correctly with the experimental phenomenology at qualitative level and therefore allows understanding the physical mechanisms steering charge transport in Teflon® and Kapton®
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Polimeru, Vijay Kumar. "Flexural Analysis of FRP Strengthened RCC Beams Using Meshless Local Petrov Galerkin Method (MLPG)." Thesis, 2015. http://ethesis.nitrkl.ac.in/7753/1/2015_Flexural_Vijay.pdf.

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In this project Meshless local Petrov Galerkin (MLPG) method is utilized for the flexural analysis of simply supported RCC beams strengthened with FRP laminates. This method uses the moving least-squares (MLS) approximation with different weight functions to interpolate the field variables and uses a local symmetric weak form (LSWF). The beams under consideration are rectangular and T-beams reinforced either on tension face or on both faces as per IS 456:2000. The proposed method is first applied to unstrengthened beam to check its applicability. The computed displacements are in good accord with the displacements attained using code formula. Then, it is extended to beams strengthened with FRP laminate. A parametric study is carried out to study the effect of disparity of field nodes in the global domain, integration cells in the sub domain and young`s modulus on the displacement. The efficiency of the algorithm developed is verified.
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CAPASIA, SAURAV. "RESPONSE STUDYOF HIGH RISE BUILDING UNDER WIND LOAD." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16363.

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Wind is a phenomenon of great complexity because of the many flow situations arising from the interaction of wind with structures. Wind is of the most significant forces of nature that must be considered in design of buildings. The characteristics of wind-induced loads on buildings continuously vary in temporal and spatial dimensions. Adequate design of buildings depends on the success in predicting the actual effects of turbulent wind forces to account for the most critical design scenarios which may occur during a certain design period. Under the action of lateral load, a tall building can subjected to lateral or torsional deflection. Due to this lateral stiffness is a major criterion in the design of high rise building. From the past studies, it is found that to resist the lateral force, bracing system in a frame model is highly economical and efficient method. Wind loading computed from wind tunnel test carried out on square shape of frame model. This thesis is composed of two major parts (1) Experimental study and (2) Response study. In the first part of thesis, square shape model is tested in wind tunnel in order to find differential pressure on the surface of model at 140 pressure points under isolated condition with three different wind incidence angle named as 00, 300 and 600. In the second part of thesis, study is carried out to investigate the behaviour of building under wind load obtained experimentally in first part of thesis. A G+17 frame model having RCC beams and columns of plan area 20m X 20m and first storey height is 4.75m and remaining storey’s height is 3.25m, is subjected to wind speed of 47m/s. And the same model is reinforced with X-bracing system at each corner of the building with an angle of size ISA 200X200X25mm. STAAD PRO software is used to analyze the building model subjected to wind load. The response study includes axial force, moment about both axes and displacement under various wind incidence angle. Behaviour of frame with and without bracings is also compared.
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Prashanth, M. H. "Experimental Investigations Into Fracture and Fatigue Behavior Of Plain and Reinforced Concrete Beams Using Acoustic Emission Technique." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5286.

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Concrete is the most widely used material in the world for construction of infrastructures and there are quite a few gaps in understanding its behaviour under different loads. Fracture in concrete occurs at pre-existing crack tip upon the formation of a fracture process zone (FPZ) with several toughening mechanisms such as micro-cracking, aggregate bridging, crack branching etc., taking place resulting in energy dissipation, which resists further crack propagation. This FPZ is responsible for the post-peak softening response under tension and size effect. The behaviour of reinforced concrete depends on the combined action of concrete and its embedded longitudinal reinforcement. The study of fracture in reinforced concrete is much more complex due to micro-structural changes in concrete, interaction between the concrete and steel and bond between them. There may be other failure mechanisms involved, such as yielding and slippage of steel, and de-lamination between steel and concrete. Under inadequate provision of stirrups or in the case of deep beams, a beam subjected to transverse loads tends to fail by shear. There is a need to develop analytical models which can address failure under shear using the fracture mechanics theory in order to reflect the size effect and the failure mechanisms. In addition, combined flexural and shear mode of failure in reinforced concrete structures also needs to be studied by considering the internal microcracking mechanisms and the effect of size. Bridge decks, highway pavements, airport pavements and offshore structures made of reinforced concrete are subjected to variable amplitude fatigue loading. The mechanism of fatigue in concrete is not yet clearly understood when compared to metallic materials. Hence, it is important to characterize the behaviour of concrete structures subjected to fatigue loading and understand the fracture mechanisms. In this research work, the problems listed above are addressed through experimental investigations into fracture and fatigue behavior of plain and reinforced concrete using the acoustic emission technique. Important elastic and fracture properties of plain concrete including the size independent fracture energy, fracture toughness, critical crack tip opening displacements, critical crack length and size of process zone are determined. These serve as input parameters in the finite element based fracture mechanics models for analysis of concrete structures. Furthermore, the mechanisms of micro-crack formation, their coalescence, macrocrack formation and eventual failure under monotonically increasing and fatigue loading are determined. The evolution of damage under different loading are studied. The effect of varying beam size (depth) and reinforcement ratios are studied in order to understand the fracture mechanisms for failure under flexure, shear, combined flexure-shear and fatigue. It is seen that the acoustic emission technique could provide vital information on the micro-cracking characteristics in concrete.
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Книги з теми "RCC BEAMS"

1

Berenstain, Stan. BRN BEARS&BIG ROAD RAC (First Time Readers). Random House Books for Young Readers, 1987.

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Частини книг з теми "RCC BEAMS"

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Qureshi, Liaqat A., Kamran A. Qureshi, Tahir Sultan, and Jahangeer Munir. "Comparison of Different Repairing Techniques Used for Rehabilitation of Initially Cracked RCC Beams." In Advances in FRP Composites in Civil Engineering, 672–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17487-2_148.

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Roy, Arun, Paresh Mirgal, and Sauvik Banerjee. "Numerical Simulation of Acoustic Emission Waveforms Generated by Tension and Shear Cracks in RCC Beams." In Recent Advances in Theoretical, Applied, Computational and Experimental Mechanics, 155–70. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1189-9_13.

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Haridas, Anandhu P., and Alice Mathai. "Plastic Hinge Relocation in RCC Double-Slotted Beam Connection." In Lecture Notes in Civil Engineering, 715–24. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5644-9_55.

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Ninan, Binny Elza, and Nivin Philip. "Analytical Study on Early—Age Crack Width in RCC Beam Structure." In Lecture Notes in Civil Engineering, 841–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80312-4_72.

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Basu, Dibya Jyoti, Devjit Acharjee, and Debasish Bandyopadhyay. "Fire Resistance of RCC T-beam Under Cyclic Load: A Numerical Study." In Lecture Notes in Civil Engineering, 1047–60. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1862-9_67.

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Morsy, Alaa M., Nabil H. El-Ashkar, and Aisha Jaber. "Nonlinear Finite Element Modelling for R.C Arched Beams with Openings Strengthened with CFRP." In Recent Research in Sustainable Structures, 16–38. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-34216-6_2.

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Ananth, M., R. Sivasankar, G. Selvaganapathy, and T. Sevakapandian. "Analysis of RCC Beam with Varying Stirrups Pattern Subjected to Two-Point Loading by Using ABAQUS." In Lecture Notes in Civil Engineering, 377–86. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6403-8_32.

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Xiao, Liang, Dongxu Zhao, Hongyu Zhang, Yubin Zhao, Xingcheng Tian, and Xiuku Wang. "Design of Data Acquisition System for CSNS RCS Beam Position Monitor." In Springer Proceedings in Physics, 431–35. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1313-4_82.

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Abushanab, Abdelrahman, and Wael Alnahhal. "Flexural Capacity of Sustainable RC Beams Manufactured with Treated Wastewater, RCA, and Fly Ash." In Lecture Notes in Civil Engineering, 1226–32. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-32519-9_124.

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da Costa Santos, Juliane, Ana Caroline da Costa Santos, Paul Archbold, and Rogério Francisco Küster Puppi. "Experimental Analysis of R.C. Beams Preloaded, Repaired and Flexural Strengthened with Carbon Fibre Reinforced Polymer (CFRP)." In Lecture Notes in Civil Engineering, 1587–600. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-88166-5_138.

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Тези доповідей конференцій з теми "RCC BEAMS"

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Bhavana, P., and T. Srinivas. "Manufactured sand effect on flexural behavior of geopolymer RCC structural elements." In SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0058556.

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V, Abhirami. "Shear Behaviour of RCC Beams Retrofitted with Ultra High Performance Concrete." In The International Conference on scientific innovations in Science, Technology, and Management. International Journal of Advanced Trends in Engineering and Management, 2023. http://dx.doi.org/10.59544/najb3829/ngcesi23p28.

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Анотація:
The main contributing factors are change in their use new design standards, deterioration due to corrosion in the steel caused by exposure to an aggressive environment and accident events such as earthquakes. In such circumstances there are only two possible solutions: replacement or retrofitting. Full structure replacement might have determinate disadvantages such as high costs for material and labour, a stronger environmental impact and inconvenience due to interruption of the function of the structure. Whenever possible, it is often better to repair or upgrade the structure by retrofitting or strengthening. In this study, shear behaviour of reinforced concrete beams retrofitted with Ultra High Performance Fibre Reinforced Concrete (UHPFRC) with two types of fibres (crimped and micro steel fibre) and a plain UHPC were compared with control beams. A normal M20 mix was designed for the study. Two point loading system was adopted for the test. And deflection were noted for each load increment. Behaviour of retrofitted beams and control beams were studied by comparing the properties such as first crack load, ultimate load and load deflection plot. The result showed that shear performance was improved by 88% for UHPFRC-C, 78% for UHPFRC-M and 36% for UHPC, showing the effect of fibres which improved the shear performance of UHPFRC retrofitted beams.
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Ahamed, Ameena, S. Sunitha, P. Vinod, and K. R. Bindhu. "A comparative study on the flexural behaviour of RCC and R/ECC beams." In 2012 International Conference on Green Technologies (ICGT). IEEE, 2012. http://dx.doi.org/10.1109/icgt.2012.6477976.

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Shanker, Battu Jaya Uma, G. Kiran Kumar, and R. Sai Kiran. "Analysis and comparison of seismic behaviour of multi-storied RCC building with symmetric and asymmetric in plan." In SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0060889.

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Bajoria, Kamal M., and Shreya S. Kaduskar. "Load carrying capacity of RCC beams by replacing steel reinforcement bars with shape memory alloy bars." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Gyuhae Park. SPIE, 2016. http://dx.doi.org/10.1117/12.2219333.

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6

Mackay, Allen B., Spencer P. Magleby, and Larry L. Howell. "A Pseudo-Rigid-Body Model for Rolling-Contact Compliant Beams." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35536.

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This paper presents a pseudo-rigid-body model (PRBM) for rolling-contact compliant beams (RCCBs). The loading conditions and boundary conditions for the RCCB can be simplified to an equivalent cantilever beam that has the same force-deflection characteristics as the RCCB. Building on the PRBM for cantilever beams, this paper defines a model for the force-deflection relationship for RCCBs. The definition of the RCCB PRBM includes the pseudo-rigid-body model parameters that determine the shape of the beam, the length of the corresponding pseudo-rigid-body links and the stiffness of the equivalent torsional spring. The behavior of the RCCB is parameterized in terms of a single parameter defined as clearance, or the distance between the contact surfaces. RCCBs exhibit a unique force-displacement curve where the force is inversely proportional to the clearance squared.
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7

Asakawa, K., S. Sugata, and N. Takado. "Radical-Surface Interaction and Its In-Situ Monitoring on GaAs and AlGaAs Surfaces in an Ultrahigh-Vacuum Etching and Cleaning System." In Microphysics of Surfaces, Beams, and Adsorbates. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/msba.1987.tuc3.

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Interaction between a plasma-excited radical beam and a GaAs surface has been studied for establishing plasma-assisted surface cleaning by using an enclosed ultrahigh-vacuum RIBE (Reactive Ion Beam Etching)1) and RBC (Radical Beam Cleaning)2) system.
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8

Jayanthi, V. "Performance Evaluation of RCC Beam Column Joint with Aramid Fibre." In Sustainable Materials and Smart Practices. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901953-2.

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Abstract-In reinforced concrete structure beam, the beam column joints are more crucial zones which are most susceptible to failure during earthquake excitation. It is very important to design the joint to dissipate the large amount of energy to the neighbouring elements without loss of strength and ductility. Several retrofitting methods are employed to strengthen the beam column joint. The effective method one among is Fibre Reinforced Polymer (FRP) composites. In this paper, the deflection of beam column joint wrapped with aramid fibre has been calculated and it is compared with Ansys software solution. From the results, the deflection of the joint is decreased when aramid fibre is used.
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Singh, Prakash, Arun Serawat, and Prashant Sharma. "Imperative study on concrete beam, RCC beam and concrete beam invigorated with CFRP laminate using FEM." In 2ND INTERNATIONAL CONFERENCE ON FUTURISTIC AND SUSTAINABLE ASPECTS IN ENGINEERING AND TECHNOLOGY: FSAET-2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0154044.

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Hassanen, Mahmoud A. H., and Mohammed Raoof. "R.C. Beams Upgraded with Externally Bonded Plates." In Structures Congress 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40492(2000)183.

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Звіти організацій з теми "RCC BEAMS"

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Chae, Yong-Chul. Calculation of beam neutralization in the IPNS-Upgrade RCS. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/83780.

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2

Dudley, J. P., and S. V. Samsonov. SAR interferometry with the RADARSAT Constellation Mission. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329396.

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The RADARSAT Constellation Mission (RCM) is Canada's latest system of C-band Synthetic Aperture Radar (SAR) Earth observation satellites. The system of three satellites, spaced equally in a common orbit, allows for a rapid four-day repeat interval. The RCM has been designed with a selection of stripmap, spotlight, and ScanSAR beam modes which offer varied combinations of spatial resolution and coverage. Using Differential Interferometric Synthetic Aperture Radar (DInSAR) techniques, the growing archive of SAR data gathered by RCM can be used for change detection and ground deformation monitoring for diverse applications in Canada and around the world. In partnership with the Canadian Space Agency (CSA), the Canada Centre for Mapping and Earth Observation (CCMEO) has developed an automated system for generating standard and advanced deformation products and change detection from SAR data acquired by RCM and RADARSAT-2 satellites using DInSAR processing methodology. Using this system, this paper investigates four key interferometric properties of the RCM system which were not available on the RADARSAT-1 or RADARSAT-2 missions: The impact of the high temporal resolution of the four-day repeat cycle of the RCM on temporal decorrelation trends is tested and fitted against simple temporal decay models. The effect of the normalization and the precision of the radiometric calibration on interferometric spatial coherence is investigated. The performance of the RCM ScanSAR mode for wide area interferometric analysis is tested. The performance of the novel RCM Compact-polarization (CP) mode for interferometric analysis is also investigated.
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3

Underwood, D. G. Proposal for a shift register approach to RPC calorimeter readout for test beam, cosmics, and sources. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/834696.

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4

Ko, Yu-Fu, and Jessica Gonzalez. Fiber-Based Seismic Damage and Collapse Assessment of Reinforced Concrete Single-Column Pier-Supported Bridges Using Damage Indices. Mineta Transportation Institute, August 2023. http://dx.doi.org/10.31979/mti.2023.2241.

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Near-fault earthquakes can have major effects on transportation systems due to the structural damage they impose on bridges. Therefore, it is imperative to assess the seismic damage of bridges appropriately, and this research focuses on reinforced concrete (RC) bridges. This research advances the seismic performance assessment of RC single-column pier-supported bridges with flexural failure under near-fault ground motion by use of ductility coefficients and damage indices. The methodology included modeling fiber-based nonlinear beam-column elements to simulate the damage development process of RC bridge piers under earthquake loadings, considering the global buckling of longitudinal steel bars, examining the cracking and spalling of cover concrete, and analyzing the effects of bond-slip. The tensile strain represented the damage of the longitudinal bars while the compression strain represented the cover concrete damage. Two innovative nonlinear fiber-based finite element models (FEMs) were developed: Model 1 (bond-slip excluded) and Model 2 (bond-slip included). Nonlinear static cyclic pushover analyses and nonlinear response history analyses were conducted. The simulation results were compared with available pseudo-dynamic test results. Model 1 provided a more ideal prognosis on the seismic performance of RC single-column pier-supported bridges under near-fault ground motion. The proposed damage indices can indicate the damage state at any stage and the gradual accumulation of damage in RC bridge piers, which are more convincing than most other indices in the literature. The proposed fiber-based nonlinear FEMs, together with the use of ductility coefficients and proposed damage indices, can also assist engineers and researchers in simulating the seismic behavior and assessing the damage state of RC bridge columns in a computationally effective manner which can empower engineers to identify and prioritize RC bridges for seismic retrofit and maintenance.
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ANALYSIS AND DESIGN OF AXIALLY LOADED SQUARE CFST COLUMN TO RC BEAM JOINTS STIFFENED BY DIAGONAL RIBS. The Hong Kong Institute of Steel Construction, March 2023. http://dx.doi.org/10.18057/ijasc.2023.19.1.6.

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Анотація:
This work proposes a partially through-beam joint system to connect square concrete-filled steel tubular (CFST) columns and reinforced concrete (RC) beams. In the system, the holes in the steel tube allow longitudinal beam reinforcements to be continuous through the joint zone to achieve direct load-transfer of the beam, and the square steel tube with holes is strengthened by welding diagonal ribs located at the corners of the steel tube. Finite element (FE) analyses on joints with RC beams were carried out based on verified models. The analysis results showed that diagonal ribs welded to the joint tube confined the concrete in the joint zone efficiently and made up for the reduction in axial load capacity caused by the holes of the steel tube, so the joint system can meet the requirements of strong-joint weak-component under axial compression with ease. Finally, mechanics-based models and axial strength equations of joints were proposed, and the predicted results agreed well with the FE results. These results proved that the square CFST column to RC beam joints stiffened by diagonal ribs were feasible and can be applied in engineering practice based on reasonable design.
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MECHANICAL PROPERTIES OF KINKED STEEL PLATES AND THEIR APPLICATIONS IN FRAME STRUCTURES. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.314.

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Анотація:
To effectively improve the ability of frame structures to comprehensively defend against seismic collapse and progressive collapse, this paper proposes a novel configuration, kinked steel plate (KP). The mechanical properties of KP were studied through test and numerical simulation. It is found that when KP is in tension, the resistance that can provide in the small deformation stage is lower, but it can provide a resistance equivalent to that of ordinary straight steel plates after being straightened. When KP in compression, the resistance that can provide is very small and can be ignored. Then, the application of KP in steel frame and reinforced concrete (RC) frame structure was discussed. For the application of KP in steel frames, KP is combined with the reduced beam section (RBS) connection, which can obtain an innovative connection (RBS-KP) containing KP. For the application of KP in RC frame, KP is added to RC beams, and a new type of RC beam containing KP is proposed. The seismic and progressive collapse performances of the RBS-KP connection and the new type of RC beam were studied by numerical simulation. Results illustrate that the RBS-KP connection has comparable seismic performance and greater resistance against progressive collapse than the RBS connection, as is the new type of RC beam relative to the RC beam.
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EXPERIMENTAL AND NUMERICAL INVESTIGATION ON SEISMIC PERFORMANCE OF RING-BEAM CONNECTION TO GANGUE CONCRETE FILLED STEEL TUBULAR COLUMNS. The Hong Kong Institute of Steel Construction, March 2022. http://dx.doi.org/10.18057/ijasc.2022.18.1.9.

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Анотація:
This paper presents an investigation on seismic performance of a ring-beam connection that is used to connect reinforced gangue concrete (RGC) beam to coal-gangue concrete-filled steel tubular (GCFST) column. Two specimens, including an interior connection with two beams and an exterior connection with one beam, were designed and fabricated for experimental tests under full-reversing cyclic loads at beam ends. In addition, finite element models which corresponded to tested specimens were developed using ABAQUS to conduct numerical simulations of the composite connection subjected to the combined axial and cyclic loads. The feasibility of the developed model to predict failure modes and load-deformation response of the connection was validated by comparing with test results. The response of the ring-beam connection to cyclic loads was examined with respects to the load-bearing capacity, deformation resistance, stiffness and strength degradation, ability to dissipate energy in a seismic event, and ductility. With numerical models, parametric analysis was completed to evaluate the influences of material and structural parameters on connection resistance against cyclic loads. Based on the results of parametric studies, a restoring force model of skeleton curve for the ring-beam connection was developed in terms of ultimate capacity and corresponding deformation. The results provided practical suggestions for the application of ring-beam connection to GCFST column in the projects.
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BENDING CAPACITY OF BIAXIAL-HOLLOW RC SLAB WITH ASYMMETRIC STEEL BEAMS. The Hong Kong Institute of Steel Construction, December 2020. http://dx.doi.org/10.18057/ijasc.2020.16.4.4.

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AXIAL COMPRESSION BEHAVIOR OF SQUARE THIN-WALLED CFST COLUMN TO RC BEAM JOINTS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.288.

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Анотація:
To investigate the influence of eccentricity ratio and slenderness ratio on the mechanical properties of eccentric compressed concrete filled steel tubular (CFST) lattice column, the ultimate bearing capacity tests of 20 K shape arrangement lacing strip of four-tube CFST columns were conducted. Based on the stress-strain relationship of CFST and the influence of shear deformation, the equilibrium equation of the mid-section is established and a numerical method for the ultimate bearing capacity of CFST lattice column is proposed. The slenderness reduction coefficient calculation model and equivalent slenderness ratio formula of CFST lattice column are established. Combined with the numerical results and the slenderness ratio reduction coefficient calculation model, the formula of slenderness ratio reduction coefficient is put forward. The comparison between theoretical analysis and experimental results shows that the calculation method of elastic-plastic ultimate bearing capacity of CFST lattice column proposed in this paper is quite accurate. The research outcomes can provide a reference for the application of CFST lattice column and revision of current specifications.
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