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Relevant bibliographies by topics / Walls and columns

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Academic literature on the topic 'Walls and columns'

Author: Grafiati

Published: 28 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Walls and columns"

1

Zhang, Xun Zhong, Ru Heng Wang, and Wei Hu. "Analysis on Seismic Performance of Frame Columns Reinforced with Wing Walls." Applied Mechanics and Materials 166-169 (May 2012): 1691–95. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1691.

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Through the ANSYS finite element method, the seismic performance of frame columns reinforced with wing walls has been analyzed, indicating that the wing wall reinforcement can effectively improve the lateral stiffness and remarkably increase the bearing capacity of columns. With the wing wall reinforcement, the envelop area of the column’s hysteresis curve increases, and the bearing capacity improves, however, the shrinking phenomena of the curve suggests that the ductility of the section reduces. When the centerline of the additional wing wall coincides with that of the original column, the hysteresis curve inclines to be full, thus advising overlapping the centerline of the wing wall with that of the original column.

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Luo, Wen Wen, Ying Min Li, Ni Na Zheng, and Na Chen. "Numerical Analysis of Seismic Behavior of Masonry Walls Confined by Precast Tie-Columns." Applied Mechanics and Materials 166-169 (May 2012): 2429–35. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.2429.

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In order to improve the seismic behavior of the rural masonry buildings and reduce the cost and be convenient for construction, a precast tie-column system was put forward, which was suitable for masonry buildings, constructed by fired common bricks or porous bricks. The uniaxial compression constitutive relation of brick masonry was used for simulating the precast tie-column. And this paper analyzed the difference of the seismic behavior of masonry walls which bearing different vertical compressive stress, and confined by cast-in-place tie-columns or precast tie-columns, and whether contain windows or not. The results show that the uniaxial compression constitutive relation used for simulating precast tie-column is reasonable and the seismic behavior of masonry walls confined by precast tie-columns is better than the wall without tie-colums, and equal to those confined by cast-in-place tie-columns.

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Tjitradi, Darmansyah, and Eliatun Eliatun. "Visualisasi Dan Identifikasi Pola Retak Dinding Bata Akibat Penurunan Pondasi Struktur Bangunan Di Kota Banjarmasin." Jurnal Gradasi Teknik Sipil 2, no. 1 (2018): 61. http://dx.doi.org/10.31961/gradasi.v2i1.575.

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The City of Banjarmasin has very low soil bearing capacity leading to a significant number of buildings experiencing foundation settlement. This causes many elements of the buildings to develop cracks and to lean. The foundation settlement is modelled using ANSYS by taking five building structure models with brick walls loaded with their selves weight. Through this modelling the crack pattern and the stress distribution on both walls and the structural elements can be visualised and identified. The results show that the following columns experiencing foundation settlement develop longitudinal cracks, crack patterns on brick walls are diagonal at every bottom corner of the columns and vertical at the edge of the inner columns if there is no foundation settlement. Crack patterns on brick walls take form of a letter V if only one or two outer column experience foundation settlement, and crack patterns on brick walls also take form of an inverted letter V if only the inner columns or two adjacent columns experience foundation settlement. Foundation settlement experienced by inner columns of a brick wall is a major cause of damage to structural components.

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Tramontin, A. P., A. L. Moreno Junior, and C. R. Oliveira. "Experimental evaluation of the prevention methods for the interface between masonry infill walls and concrete columns." Revista IBRACON de Estruturas e Materiais 6, no. 5 (2013): 765–73. http://dx.doi.org/10.1590/s1983-41952013000500005.

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Cracks that form at the interfaces between masonry structures are common uncontrolled occurrences in buildings. Numerous methods have been proposed by the construction industry to address this problem. Cracks continuously form in the joints between concrete columns and masonry infill walls. In this study, the most common methods for preventing these types of cracks were evaluated in laboratory experiments. Column masonry models were constructed using different types of joints between concrete columns and masonry infill walls, such as steel bars and steel mesh. The efficiency of each type of joint method was evaluated by performing direct tensile tests (pullout tests) on the models and monitoring the evolution of the crack opening in the joint between the column and wall, as a function of load applied to the model. The results from this study indicate that the model composed of "electrowelded wire mesh without steel angles" is the best model for controlling cracking in the joints between concrete columns and masonry infill walls.

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Wang, Cheng, Yong Kun Luo, and Xiao Long Xu. "Discussion of Different Methods of Strengthening Masonry Walls with Constructional Column." Applied Mechanics and Materials 226-228 (November 2012): 1098–101. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1098.

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With the rapid development of economy and the civil engineering discipline, the seismic performance of existing masonry wall can't satisfy the codes and regional seismic requirements. As a result, strengthening the earthquake resistance of it is put on the agenda. Using large-scale finite element software-abaqus, this paper analyzes different methods of strengthening masonry walls by constructional columns. Under the premise of the cross area of the columns used to reinforce is identical, it shows that the wall strengthened by bilateral constructional columns has a better seismic performance than by unilateral constructional column. The ductility coefficient of the former increases 49.4% than the original masonry, while the latter increases 26.3%. The bilateral constructional column could significantly improve the integrity and ductility of the masonry wall, so does the seismic performance. It has engineering sense for the strengthening work.

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Dong, Hong Ying, Wan Lin Cao, Hai Peng Wu, and Fang Fang Xu. "Seismic Behavior of Damage-Reduction Based, Energy Dissipation Composite Shear Walls." Advanced Materials Research 742 (August 2013): 34–39. http://dx.doi.org/10.4028/www.scientific.net/amr.742.34.

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A new damage-reduction based composite shear wall was proposed. It combines with three different energy dissipation units, which are the CFST column, SP deep beam and RC strip. The CFST column is set to be exposed outside or concealed inside the concrete. CFST columns and SP deep beams constitutes the core structure. During loading, RC strips between columns work with the core structure so as to reduce the damage and consume the energy. Four specimens with different design parameters, including 2 shear walls with exposed CFST columns and 2 with concealed CFST columns, were tested under horizontal cyclic loading. The load-bearing capacity, stiffness, hysteretic property, ductility, and failure characteristic of specimens have been analyzed. Results show that the deformation of this wall is just between that of the slotted shear wall and the entire shear wall. The RC strips reduce the damage and the core structure presents ductile behavior during load. The new wall is designed based on damage-reduction and it shows good seismic energy dissipation mechanics. It can be applied to the design of shear wall in high-rise buildings.

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Bai, Yongtao, and Guoliang Bai. "Pseudo-Dynamic and Quasi-Static Testing of an Irregular Steel Concrete Composite Frame with Wing Walls." International Journal of Structural Stability and Dynamics 16, no. 02 (2016): 1450095. http://dx.doi.org/10.1142/s0219455414500953.

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This paper presents a series of pseudo-dynamic tests (PDTs) and quasi-static tests (QSTs) on a dual wing-walled frame system, represented here by a 1/7-scaled composite moment frame with steel reinforced concrete (SRC) columns and reinforced concrete (RC) wing walls. Special characteristics of this scaled system are irregular story layout, strong-beam weak-column mechanism and large axial load. A series of scaled El-Centro (NS) waves were used as the input ground motion for the PDTs, the results of which showed that the seismic behavior was significantly improved by the RC wing walls. With the strong-beam weak-column connections, severe damages sustained by the longitudinal wing walls (LWW) prevented the potential collapse of column, and the transverse wing wall (TWW) efficiently avoided the fragile shear failure of short columns and panel zone of beam-column joints. The failure mechanisms were identified indicating that wing walls improved the ductility for the bare frame. This study provides a solid experimental support on the evaluation of seismic behavior of irregular SRC frames with RC wing walls, which could be applied in the main factory buildings of thermal power plants (TPP).

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Mickaitis, Marius, and Vytautas J. Stauskis. "VIBRATION TRANSMISSION THROUGH JOINTS OF WALLS AND COLUMNS IN FRAMED BUILDINGS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 11, no. 3 (2005): 185–91. http://dx.doi.org/10.3846/13923730.2005.9636349.

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Constructional practice has shown that structure‐borne sound transmission through joints can signally reduce airborne sound insulation in buildings. Vibration transmission coefficient evaluates this reduction in design calculations. In this article sound transmission through joints in framed buildings is investigated. Rooms in framed buildings are shaped by walls and ceilings connected to columns. Several walls could be connected to each column in a building plan. Such joints are modelled like idealised plate–beam–plate junctions. Examining vibration transmission through these junctions, the influence of a column must be estimated. The column will resist forces and moments applied by the connected walls. The aim of the paper is to evaluate how various properties of walls and columns influence the vibration transmission loss at joints of buildings. The results are compared with the results of similar junctions without columns.

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Wang, Shao Jie, Fu Sheng Liu, Tong Sun, Shun Ke Zhang, and Hong Bin Wang. "Experimental Study on the Axial Compression Capacity of Condensed Column in Composite Masonry Wall." Advanced Materials Research 243-249 (May 2011): 578–83. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.578.

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On the basis of summary and analysis of the characteristics of concrete hollow blocks and composite masonry walls, this paper puts forward the concept of composite masonry wall with condensed core columns. Regarding the distance between core columns (s=600mm and s=1200mm) as the main influencing factors, two composite masonry walls were designed and built to carry out the axial compression capacity experimental study. The results of the study show that the composite masonry wall with condensed core columns can greatly improve the ultimate axial compression capacity of the wall, delay the fracture process, and influence the failure modes. In the entire experiment, the deformation of concrete hollow blocks and core columns was basically the same, and can work in coordination. The stress mechanism of the composite masonry wall which had splitting fracture changed from the composite masonry wall to the (weak) frame structure, which finally formed column hinge and got destroyed. The experimental results of this paper can provide a new way for the application of concrete hollow blocks as main wall materials in the field of high-rise buildings. The establishment of axial compression capacity formula and the eccentric compression performance of the composite masonry wall with condensed core columns deserve further study.

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Deng, Hongyu, and Baitao Sun. "Finite Element Modeling and Mechanical Behavior of Masonry-Infilled RC Frame." Open Civil Engineering Journal 10, no. 1 (2016): 76–92. http://dx.doi.org/10.2174/1874149501610010076.

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During the analysis of reinforced concrete structures, the infill wall is usually simplified as a diagonal inclined strut to facilitate finite element modeling calculations. However, the actual seismic damage and single frame-filled wall pushover experimental results show that when the earthquake shear force is huge, the top of the infill wall and the beam–column connections are usually, thus the path of the force transfer will be changed. Based on this actual failure phenomenon, a new calculation model which has different contact position between the equivalent bracing walls and the frame columns is generated. Thus, the force analysis is given based on this model, the formulae for calculating the equivalent width of bracing walls, the shear bearing capacity of the wall-filled frame, and the infill wall’s actual participation in the stiffness. A finite element simulation method by ABAQUS is used to determine an empirical formula for calculating the reasonable contact position between the equivalent bracing walls and the frame columns. The verification results show that the finite element model presented in this paper is more reasonable, and the stiffness and shear resistance of infill wall should not be neglected. The calculation formula of stiffness of infill wall presented in this paper is coincided with seismic code. But the calculation formula of shear resistance of infill wall presented in seismic code is higher than the actual value, so it is suggested that calculation formula presented in this paper should be accepted.

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Dissertations / Theses on the topic "Walls and columns"

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Chung, Yueh-minne. "Columns and walls : the interplay between structure and space." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/65201.

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Harris, Amodeo Karen Ann. "A House on Saint Croix." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/40817.

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There is an undefinable order in the universe. In our solar system, nine planets revolve around one sun. The earths’ orbit around the sun takes 365 days. The moons’ orbit about the earth take 30 days. The earths’ revolution about its own axis takes 24 hours. The sun rises in the east and sets in the west. This is how man begins to define his portion of the universe, to distinguish limits. There is much more to explore, learn and explain. As humans we subconsciously desire a harmony and balance around us. Order. It is a physical, tangible presence that we can see, label and understand, which is evident throughout the human existence. We have a need to define, regulate and establish rules, to create order. Order permeates our lives on a daily basis. This thesis seeks to give order to a structure, a House. It is the study of grids, columns and walls in relation to the structure that it supports. A sixteen square grid is a constant of this project. It is the controlling element that gives rise to the placement of the walls and columns. Walls and columns are placed with in the house according to an order that is defined by the grid. Materials are also used to distinguish boundaries of the grid establishing its influence throughout the house.<br>Master of Architecture

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Lau, J. C. K. "The strength of masonry walls and columns of geometric cross section subjected to axial load and bending." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.705159.

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Vora, Hitesh Yu Cheng. "Shear wall tests and finite element analysis of cold-formed steel structural members." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9726.

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Mati, Shepherd A. "Brick walls or brick columns? : management responses to the challenge of sustainability in community radio with special reference to Bush Radio and Radio Zibonele." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52153.

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Thesis (MPhil) -- University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Community radio stations in South Africa are faced with a huge challenge to become sustainable in the process of serving their communities. The issue of sustainability itself is complex and shaped by a range of conditionalities. These include community participation, funding, regulatory and licencing factors, staff and management expertise, and the strategic planning and management capacity of a station. Often the communities themselves are materially poor and unable to contribute in monetary terms to the radio station. However, these same communities are also a source of wealth when it comes to experience, ideas, human power and time. A major challenge is for station management to develop organisational strategies that facilitate full utilisation of this community resource in the process of sustaining their stations. The focus of this study is on two stations in the Western Cape - Bush Radio and Radio Zibonele - and how their management is responding to the challenge of sustainability. Bush Radio has evolved a diversification strategy based on providing formal training and development as an income-generator, and Radio Zibonele has responded through a strategy of selling airtime to advertisers. This work describes these sustainability strategies and explores whether they constitute 'building a brick column or a brick wall'. The conclusion suggests that while both radio stations demonstrate varying degrees of community participation, clear internal systems of monitoring and control of resources, they differ in some fundamental respects of strategy. Bush Radio, on the one hand, shows a clear commitment to consciously diversifying income sources in a way that does not leave the station highly dependent on any single source. This, the writer submits, constitutes an attempt at building a "brick wall". Radio Zibonele, on the other hand, shows a clear commitment to consolidation and reliance on advertising revenue as a single source of income for the station. To the extent that this station relies on a single source of income and does not demonstrate any strategic objective of diversifying sources, the writer submits, it is building a "brick column". The basic assumption of this study is that while the challenge of sustainability constitutes an objective reality facing community radio stations in South Africa today, the subjective responses developed by station management to deal with this challenge can and often do make a difference.<br>AFRIKAANSE OPSOMMING: Gemeenskapsradiostasies in Suid-Afrika staan voor 'n groot uitdaging om volhoubaar te ontwikkel. Volhoubaarheid as sulks is kompleks en word deur 'n verskeidenheid faktore beinvloed. Dit sluit in gemeenskapsdeelname, befondsing, regulerings- en lisensierinqsfaktore, personeel- en bestuursvernuf en die strategiese beplanning en bestuurskapasiteit van die stasie. Meestal is die gemeenskappe self arm en nie daartoe in staat om in rnonetere terme 'n bydrae tot die stasie te lewer nie. Dieselfde gemeenskappe is egter ook 'n bron van rykdom in terme van ondervinding, idees, mannekrag en tyd. Een van 'n stasiebestuur se grootste uitdagings is om organisatoriese strateqiee te ontwikkel wat die volle gebruik van die gemeenskapshulpbron sal fasiliteer in die proses om hul stasies volhoubaar te ontwikkel. Die fokus van die studie val op twee stasies in die Wes-Kaap - Bush Radio en Radio Zibonele - en hoe hul bestuur op die uitdaging van volhoubare ontwikkeling reageer. Bush Radio het 'n diversifiseringstrategie ontwikkel wat op formele onderig en ontwikkeling as 'n inkomstegenereerder gebaseer is. Radio Zibonele, daarenteen, konsentreer op adverteerders. Die werk beskryf die volhoubaarheidstrategiee elk van die radiostasies. Die gevolgtrekking word gemaak dat albei radiostasies wei verskillende grade van gemeenskapsbetrokkenheid, duidelike interne monitorsisteme en beheer van hulpbronne het. Tog verskil hulle ten opsigte van sekere fundamentele strategiee. Aan die een kant het Bush Radio 'n duidelike verbintenis tot 'n bewustelike diversifisering van inkomste op so 'n manier dat die stasie nie afhanklik is van een bron van inkomste nie. Die skrywer vergelyk dit met die bou van 'n "baksteenmuur". Radio Zibonele, aan die ander kant, is verbind tot advertensies as die enigste bron van inkomste. Aangesien die stasie op 'n enkele bron van inkomste vertrou en nie enige strategiese doelwitle vir die diversifisering van hulpbronne het nie, vergelyk die skrywer dit met die bou van 'n "baksteenpilaar" . Die basiese veronderstelling van die studie is dat die reaksie van die stasiebestuur In deurslaggerwende verskil kan maak om die uitdaging van volhoubare ontwikkeling Suid- Afrikaanse radiostasies die hoof te bied.

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Simões, Yagho de Souza. "Análise numérica de pilares de aço isolados e inseridos em paredes em situação de incêndio." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-26042018-102934/.

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Em um incêndio, pilares de aço inseridos em paredes apresentam uma resposta termoestrutural diferente daqueles isolados, de modo que a compartimentação oferece um aumento de sua resistência ao fogo. Poucos estudos foram desenvolvidos até o presente momento para avaliar o desempenho de pilares em contato com paredes, sendo que aqueles já realizados apresentaram respostas que ainda deixam dúvidas sobre esses elementos. Diante disso, este trabalho propõe analisar, em contexto numérico, o comportamento de pilares de aço isolados e inseridos em paredes sujeitos à ação térmica, a partir do uso do código computacional ABAQUS versão 6.14. A modelagem termoestrutural, considerando a parede somente como elemento de compartimentação, promoveu resultados pouco consistentes, o que leva a concluir que a alvenaria influencia na resposta estrutural de pilares em situação de incêndio. Por essa razão, ao inserir molas que controlam o deslocamento axial das paredes na modelagem numérica, os resultados alcançados passaram a ser mais representativos. Análises complementares a respeito da influência do fator de carga e do nível de rigidez axial e rotacional na resistência ao fogo dos pilares também foram realizadas. Para todos os modelos, constatou-se a influência negativa do fator de carga quando aumentado. Quanto à restrição axial, foi verificado que sua presença possui maior influência na resistência ao fogo em comparação com sua intensidade, uma vez que a elevação desse parâmetro não afetou o tempo crítico dos pilares, para a maior parte dos casos analisados. Em relação à rigidez rotacional, ela se mostrou favorável para a resistência ao fogo. Além do mais, a pesquisa contou com uma avaliação do método simplificado da ABNT NBR 14323:2013 para cálculo da evolução da temperatura em perfis de aço. Concluiu-se que ele apresenta melhores resultados para os pilares com aquecimento uniforme na seção transversal. Por essa razão, foi proposta uma nova metodologia de cálculo de temperatura para pilares em contato com paredes, validada por meio de testes numéricos.<br>In a fire situation, steel columns embedded on walls demonstrate a different thermo- structural response from those isolated, so that the subdivision offers an increase of its fire resistance. Few studies have been developed in order to evaluate the performance of columns in contact with walls, and those already performed showed results that still leave doubts about these elements. Therefore, this work proposes to analyze, in a numerical context, the behavior of isolated and embedded on walls steel columns in fire using the software ABAQUS 6.14 as a modeling tool. The thermo-structural modeling, considering the wall only as a compartmentation element, has presented poor results, which leads to the conclusion that the masonry has influence on the structural response of columns subjected to fire situation. For this reason, when inserting springs in order to control the axial displacement of the walls in numerical modeling, the obtained results were satisfactory. Further analyzes in respect of the load factor influence and the level of axial and rotational stiffness on the fire resistance of columns were also performed. For all the models, it was verified a negative influence of the load factor when increased. However, when it comes to the axial restriction, it was verified that its presence had more influence in the fire resistance of the structural element despite of its intensity, once the increase of this parameter did not affect the critical time of the columns, for most cases analyzed. In respect to rotational stiffness, it was proven favorable to the fire resistance. In addition, this research employed the simplified method presented in the ABNT NBR 14323: 2013 to calculate the temperature evolution in steel profiles. It was concluded that it presents good results only for the columns with uniform heating in the cross section. For this reason, a new methodology to calculate the temperature of columns in contact with wall was proposed, validated by numerical tests.

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Mahasantipiya, Sedtha. "Analysis the behaviour of spread footing for highway bridge foundation." Ohio University / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1179259867.

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Vora, Hitesh. "Shear Wall Tests and Finite Element Analysis of Cold-Formed Steel Structural Members." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9726/.

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The research was focused on the three major structural elements of a typical cold-formed steel building - shear wall, floor joist, and column. Part 1 of the thesis explored wider options in the steel sheet sheathing for shear walls. An experimental research was conducted on 0.030 in and 0.033 in. (2:1 and 4:1 aspect ratios) and 0.027 in. (2:1 aspect ratio) steel sheet shear walls and the results provided nominal shear strengths for the American Iron and Steel Institute Lateral Design Standard. Part 2 of this thesis optimized the web hole profile for a new generation C-joist, and the web crippling strength was analyzed by finite element analysis. The results indicated an average 43% increase of web crippling strength for the new C-joist compared to the normal C-joist without web hole. To improve the structural efficiency of a cold-formed steel column, a new generation sigma (NGS) shaped column section was developed in Part 3 of this thesis. The geometry of NGS was optimized by the elastic and inelastic analysis using finite strip and finite element analysis. The results showed an average increment in axial compression strength for a single NGS section over a C-section was 117% for a 2 ft. long section and 135% for an 8 ft. long section; and for a double NGS section over a C-section was 75% for a 2 ft. long section and 103% for an 8 ft. long section.

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Skoupá, Karolina. "Polyfunkční dům v Brně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265321.

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This diploma thesis deals with the supporting structure of the Multifunctional house in Brno. Elements are solved locally supported slab, columns, walls, patka.Statický calculation of internal forces was conducted in Scia Engineering.

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Campos, Gabriela Mazureki. "Recomendações para o projeto de cálices de fundação." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-06042010-110440/.

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Essa pesquisa apresenta um estudo a respeito de cálices de fundação com colarinho. O trabalho foi elaborado a partir de uma análise crítica e síntese de resultados de estudos experimentais e numéricos desenvolvidos na Escola de Engenharia de São Carlos - Universidade de São Paulo (EESC-USP) sobre a ligação pilar-fundação por meio de cálice para estruturas de concreto pré-moldado. Esses estudos englobam uma tese de doutorado e três dissertações de mestrado, em que foram abordadas diversas situações de projeto dessa ligação. A partir dos resultados dessas pesquisas são elaboradas recomendações para o projeto do cálice com interface lisa e rugosa e da base do pilar pré-moldado. Incluem-se ainda avaliação da situação de montagem e disposições construtivas gerais a respeito da ligação por meio de cálice. Mediante aplicações, são avaliadas as recomendações de projeto e simulados casos reais de emprego da ligação pilar-fundação por meio de cálice. Com base nesse estudo, as principais conclusões incorporadas às recomendações foram em relação: a) a posição de aplicação da resultante de pressão superior na parede frontal; b) ao comportamento das paredes transversais; c) a força normal com pequena excentricidade; d) a determinação da espessura mínima da parede do colarinho e; e) adaptação do modelo de comportamento da base do pilar pré-moldado com o modelo do cálice. Ao final, são elaborados exemplos de dimensionamento da ligação cálice de fundação com interface lisa e rugosa e da base do pilar pré-moldado, além de um roteiro simplificado com recomendações de projeto desses elementos.<br>This research presents a study about the socket base with pedestal walls. The paper was drawn from a review and synthesis of results of experimental and numerical studies carried out at the Engineering School of São Carlos University of São Paulo (EESC-USP) about the socket base connection by pedestal walls in precast concrete structures. These studies include a Phd thesis and three MSc dissertations, which addressed several situations of design of that kinf of connection. From the results, recommendations are drawn for the design of socket with smooth and rough interface and precast column base. Included also evaluated at the erection situation and constructive provisions regarding socket base. With some applications are analyzed the design recommendations and simulated real cases of use of column-base connection by socket. Based on this study, the main conclusions that were incorporated into the recommendations were about: a) local of application of the top pression resultant; b) behavior of transversal walls; c) normal force with small eccentricity; d) determination of the thickness of pedestal wall and; e) adaptation of column base model with the socket model. Finally, examples are drawn about socket foundation design with smooth and rough interface and of the precast column base, beyond simplified script with recommendations for the design of these elements.

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Books on the topic "Walls and columns"

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Thurlimann, Bruno. Design of masonry walls and reinforced concrete columns with column-deflection-curves. Birkhauser, 1987.

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Macfie, Cody. Getting started with mortared stonework: Walls, patios, fireplaces, columns & more. Lark Books, 2006.

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Arquitectos, Fundación Caja de, ed. La columna y el muro: Fragmentos de un diálogo. Fundación Caja de Arquitectos, 2001.

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Pepper, Beverly. Beverly Pepper: Tell wall reliefs, sentinels and columns. AndréEmmerich Gallery, 1990.

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Off the wall: The newspaper columns of Ted Gardner. Knoll Publishers, 1993.

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Mutalib, M. I. Abdul. Operation and control of the dividing wall column. UMIST, 1995.

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The Wall Street Journal on Marketing: The Best of the "Marketing" Column. Plume, 1989.

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Shellenbarger, Sue. Work & family: Essays from the "Work & family" column of The Wall Street journal. Ballantine Books, 1999.

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Support/materialise: columns, walls, floors. Birkhäuser, 2014.

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Stone walls and river music: The columns of Bob Hill. Green Thumb Publishing, 1997.

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Book chapters on the topic "Walls and columns"

1

Kato, D., R. Kuramoto, N. Abe, and T. Nakamura. "Restoring Force Drift Angle Relationship Models of Reinforced Concrete Columns with Side Walls." In Lecture Notes in Civil Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8079-6_146.

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Bhattacharjee, J., and Vivek Kumar. "Seismic Evaluation of RC Structure with Distinct Placement of Columns and Shear Walls." In Lecture Notes in Civil Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6969-6_36.

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Piloto, Paulo A. G., Nathália Gonçales, Ronaldo Rigobello, Mário Vaz, Rui M. Guedes, and João S. Baptista. "Buckling Resistance of Partially Encased Columns Embedded on Walls Under Fire from One Side." In Advances in Fire Safety Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-36240-9_5.

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Giarlelis, Christos, Evlalia Lamprinou, and Constantinos Repapis. "Seismic Rehabilitation of a School Building in Cephalonia, Greece." In Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures. International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/cs002.001.

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<p>The 2014 earthquake sequence in Cephalonia, Greece, resulted in a number of structural failures. In Argostoli, the capital of the island, a school building suffered light damage; however, the structural assessment following the analysis procedures of the recently published Greek Code for Structural Interventions, showed that seismic strengthening is required. The structure was built on the aftermath of the catastrophic 1953 Ionian earthquake sequence based on older code requirements, which are much outdated, as indicated from the results of both modal response spectrum analyses and non-linear static analyses. The retrofit aims to increase the very low structural capacity of the building and as a means for that the use of concrete jackets is selected. Based on the results of the assessment, it was decided that concrete jackets should be applied to all columns, while large structural walls running along the transversal direction were strengthened with single-sided reinforced concrete jacketing. The interventions are limited by architectural demands and cost considerations. However, analyses of the strengthened structure show that the interventions improve its seismic behaviour adequately. The detailing of interventions is thoroughly presented. What makes this case study interesting is the unusual structural system of the building, which is an ingenious combination of frame elements and lightly reinforced concrete walls and its behaviour to one of the strongest recent Greek earthquakes. The rehabilitation study had to model correctly the structure and propose interventions that were in agreement with the architectural demands and the cost consideration.</p>

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Giannoudis, Vasileios P., and Peter V. Giannoudis. "Acetabulum Posterior Wall/Column Fractures." In Fracture Reduction and Fixation Techniques. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-24608-2_8.

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Sandaker, Bjørn N., Arne P. Eggen, and Mark R. Cruvellier. "The Column and the Wall." In The Structural Basis of Architecture. Routledge, 2019. http://dx.doi.org/10.4324/9781315624501-8.

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Hoyme, Craig A. "Dividing Wall Columns in the Chemical Industry." In Handbook of Industrial Chemistry and Biotechnology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52287-6_38.

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Letournel, Emile, Robert Judet, and Reginald A. Elson. "Associated Posterior Column and Posterior Wall Fractures." In Fractures of the Acetabulum. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-75435-7_12.

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Douras, Panagiotis, and Peter V. Giannoudis. "Acetabulum Anterior Wall and Anterior Column Fractures." In Fracture Reduction and Fixation Techniques. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-24608-2_9.

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Triantafyllou, C., and R. Smith. "The Design and Optimization of Dividing Wall Distillation Columns." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_32.

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Conference papers on the topic "Walls and columns"

1

Deng, Xiaoyan, Mehdi Dastfan, and Robert G. Driver. "Behaviour of Steel Plate Shear Walls with Composite Columns." In Structures Congress 2008. American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41016(314)100.

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Huston, Dryver R., Noel V. Pelczarski, and Brian Esser. "Inspection of bridge columns and retaining walls with electromagnetic waves." In SPIE's 8th Annual International Symposium on Smart Structures and Materials, edited by S. C. Liu. SPIE, 2001. http://dx.doi.org/10.1117/12.434157.

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Morrill, K. B., L. J. Malvar, J. E. Crawford, and J. M. Ferritto. "Blast Resistant Design and Retrofit of Reinforced Concrete Columns and Walls." In Structures Congress 2004. American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40700(2004)154.

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Yeh, Yung-Hsin, and Wen-I. Liao. "Cyclic Performance of Two-Story Ductile RC Frames With Infill Walls." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71453.

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This paper presents the results of the experimental and analytical investigations conducted on four 0.8 scale 2-story one bay ductile reinforced concrete frames with infill nonstructural walls subjected to cyclically increasing loads. The material properties and the member sizes of beams and columns in the four RC frame specimens are identical, but with different types of infill nonstructural wall. These four frames are the pure frame, frame with short column, frame with short beam and frame with wing walls. The four RC frame specimens were designed and constructed according to the general prototype building structures in Taiwan. Test results indicate that the ductility behavior of the frames with infill wall is similar to those of the pure frame. The ultimate base shear strength of the frames with infill walls is higher than those of the pure frame. Analytical results show that the proposed simplified multi-linear beam-column element implemented in a general purpose structural analysis program can accurately simulate the cyclic responses of the RC frame specimen incorporating the elastic flexural stiffness computations suggested by the model building codes.

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Junus, Nasruddin, Kenji Sakino, Hiroyuki Nakahara, and Hiroki Matsubayashi. "Punching Shear Strength of Edge Columns in Energy Dissipation Structural Walls (EDSWS)." In 4th International Conference on Steel & Composite Structures. Research Publishing Services, 2010. http://dx.doi.org/10.3850/978-981-08-6218-3_ss-we014.

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Zhang, Xu-Qiao, and Yan-Lin Guo. "Behavior of Steel Plate Shear Walls with Pre-Compression from Adjacent Frame Columns." In 10th Pacific Structural Steel Conference (PSSC 2013). Research Publishing Services, 2013. http://dx.doi.org/10.3850/978-981-07-7137-9_107.

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Mahamid, Mustafa, and Majid Houshiar. "Direct Design Method and Design Diagram for Reinforced Concrete Columns and Shear Walls." In Structures Congress 2018. American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481325.027.

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Sezen, H. "Collapse Performance of Existing Buildings after Loss of Load-Bearing Walls and Columns." In Geotechnical and Structural Engineering Congress 2016. American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479742.168.

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Guimaraes, Helio Bailly, Antonio Carlos Fernandes, and Bruno Nogueira Machado. "Analysis of Thin Walls Oscillating Water Columns (OWC) by Potential Methods and Model Testing." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11167.

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The present work is dedicated to the behavior of an internal oscillating water column (OWC) under the external incidence of waves. The oscillation of the OWC is a subject of strong research interest since it can be applied to clean energy generation and also offshore exploitation. It is shown that the viscous effects are important so that the linear wave theory based on potential theory should be corrected. The paper discusses methods to achieve good results using panel method within potential theory and shows how to introduce the necessary correction. Both low-order and higher-order method are considered. The thin walls geometry of the specific OWC is challenging. The theoretical results were compared with experimental results using regular wave experiments and decaying tests with reduced scale models. The later was essential to get the viscous effects of the OWC.

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Al-Salloum, Yousef, Tarek Almusallam, Tuan Ngo, Hussein Elsanadedy, Husain Abbas, and Priyan Mendis. "Progressive Collapse Analysis of a Medium-Rise Circular RC Building Against Blast Loads." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54901.

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This paper investigates the vulnerability of a typical medium-rise circular RC building against progressive collapse as a result of blast generated waves. The building is an eight storied (including one story basement) commercial complex. The likely blast threat scenario was identified by qualitatively assessing the vulnerability of the critical elements of the structure. LS-DYNA was used for the finite element modelling of the structure. The study presents local model analysis of one of its circular columns for which fluid-structure interaction through Alternate Lagrangian Eulerian (ALE) element formulation has been employed. The concrete volume in the columns was modeled using 8-node reduced integration solid hexahedron elements. The global model analysis was carried out to examine the overall response of the structure due to the failure of one of the critical columns. The building was modeled using beam and shell elements. The 2-node axial beam elements with tension, compression, torsion, and bending capabilities were employed to represent the RC beams and columns, whereas the four node quadrilateral and three node triangular shell elements were used to represent the core wall, floor slabs, retaining walls and facade. The column bases of the building were fixed at the level of raft slab. The results of the study are proposed to be used to control or prevent progressive collapse of RC buildings.

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Reports on the topic "Walls and columns"

1

Walton, O. R., H. J. Vollmer, and V. S. Hepa. Wall-Friction Support of Vertical Loads in Submerged Sand and Gravel Columns. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1234608.

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Wang, Chao, Zhijie Xu, Kevin Lai, et al. PNNL Report on the Development of Bench-scale CFD Simulations for Gas Absorption across a Wetted Wall Column. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1427930.

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Mayr, U., T. A. Brent, T. de Freitas, T. Frisch, G S Nowlan, and A. V. Okulitch. Figure 12. Columnar stratigraphic cross-section of lower Paleozoic formations between Russell Island and Le Feuvre Inlet, Prince of Wales Island. Detailed description of sections in Appendix 1. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2004. http://dx.doi.org/10.4095/216174.

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STRESS RESPONSE AND INITIAL STIFFNESS OF SIDE PLATE CONNECTIONS TO WCFT COLUMNS. The Hong Kong Institute of Steel Construction, 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.9.

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To study the mechanism of load transfer in double-side-plate connections between I-beams and wall-type concrete-filled steel tubular columns, a pseudo-static experiment and finite element analysis were conducted for two full-scaled specimens. The results revealed that the primary load was transmitted along an S-shaped path in the side plate, and the primary strain occurred in an X-shaped region between the left and right steel beam flanges. The shear force in the steel beam web was transmitted first to the side plate centre and then to the joint area, where the side plate, steel tube web, and concrete all resisted the internal force. Based on principal component methods, a calculation formula was established for initial rotational stiffness that comprehensively considers the influence of the tensions, compression, and shear deformation of the cover plate, side plate, and web. Comparing this formula with an existing model showed that the proposed formula is suitable for new types of side plate joints. Moreover, it can accurately calculate the initial rotational stiffness of the joint, thus providing a reliable basis for future engineering design.

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AN EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF CONCRETE-FILLED STEEL TUBE (CFST) KEY-CONNECTED PREFABRICATED WALL AND COLUMN. The Hong Kong Institute of Steel Construction, 2020. http://dx.doi.org/10.18057/ijasc.2020.16.3.2.

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