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Dissertations / Theses on the topic 'High strength concrete Columns'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Zaina, Mazen Said Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Strength and ductility of fibre reinforced high strength concrete columns." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2005. http://handle.unsw.edu.au/1959.4/22054.

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The main structural objectives in column design are strength and ductility. For higher strength concretes these design objectives are offset by generally poor concrete ductility and early spalling of the concrete cover. When fibres are added to the concrete the post peak characteristics are enhanced, both in tension and in compression. Most of the available experimental data, on fibre reinforced concrete and fibre reinforced high strength concrete columns, suggest that an improvement in both ductility and load carrying capacity due to the inclusion of the fibres. In this thesis the ductility

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2

Xue, Hongyu. "Structural behaviour of high strength concrete columns." Thesis, University of Westminster, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339246.

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3

Friis, Jesper. "Structural performance of confined high strength concrete columns." Thesis, City University London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397864.

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4

Razvi, Salim R. "Confinement of normal and high-strength concrete columns." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10075.

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A comprehensive research project was conducted to investigate the behaviour and design of earthquake resistant normal-strength and high-strength concrete columns. The project included three essential components; testing of full size columns, development of an analytical model, and development of a design procedure. The experimental program consisted of material research and structural testing. The first phase was designed to study mechanical properties of high-strength concrete, which involved testing of a large number of concrete cylinders. The second phase was designed to investigate perform

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5

Bayrak, Oguzhan. "Seismic performance of rectilinearly confined high strength concrete columns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq41101.pdf.

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6

Ho, Ching-ming Johnny. "Design and detailing of high strength reinforced concrete columns in Hong Kong." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22331815.

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7

Lipien, Wojciech. "Behaviour of square high-strength concrete columns under load reversals." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/9734.

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Strength and deformation characteristics of 10 square confined high-strength concrete columns were investigated. Properties of columns were selected to allow assessment of the importance of confinement parameters for high-strength concrete columns. The specimens were tested under constant axial compression and incrementally increasing lateral deformation reversals, simulating seismic action. The data indicate that high-strength concrete columns can be confined to behave in a ductile manner. The volumetric ratio of confinement reinforcement required for high strength concrete columns is higher

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8

Alfawakhiri, Farid. "Behavior of high strength concrete filled circular steel tube beam-columns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq26298.pdf.

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9

Montgomery, David L. "Behavior of spirally reinforced high strength concrete columns under axial loading." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ51538.pdf.

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10

Baingo, Darek. "Performance of circular high-strength concrete columns under lateral load reversals." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/9864.

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In recent years, high-strength concrete (HSC) has gained a more widespread acceptance in the construction industry. In spite of the advantages inherent to HSC, concerns still exist about its relative brittleness, particularly in regions of high seismic risk. An experimental and analytical investigation was conducted to study the behaviour of circular HSC columns subjected to simulated seismic loading. The experimental program included the testing of nine full-scale circular columns under combined axial compression and lateral load reversals. The emphasis was on the strength and deformation cha

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11

Wu, Y. F. "Seismic retrofitting of rectangular reinforced concrete columns with partial interaction plating /." Title page, abstract and table of contents only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phw9591.pdf.

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12

Ho, Ching-ming Johnny, and 何正銘. "Design and detailing of high strength reinforced concrete columns in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31224398.

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13

Hammoud, Amer. "Performance of High-Strength Reinforced Concrete Columns Under Shock-Tube Induced Blast Loading." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36450.

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Accounting for blast hazards has become one of the major concerns for civil engineers when analysing and designing structures. Recent terrorist attacks and accidental explosions have demonstrated the importance of mitigating blast effects on buildings to ensure safety, preserve life and ensure structural integrity. Innovative materials such as high-strength concrete, steel fibers, and high-strength steel offer a potential solution to increase resistance against extreme dynamic loading and improve the blast resilience of buildings. This thesis presents the results of an experimental and analyti

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14

Shamsai, Mohammad. "Prefabricated cage system for reinforcing concrete members." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1141744526.

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15

Kim, Young Joon. "The shear response of circular concrete columns reinforced with high strength steel spirals." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0016/MQ53375.pdf.

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16

NORIEGA, BETZABET EVELIN VILAVILA. "BEHAVIOR OF SLENDER HIGH STRENGTH CONCRETE COLUMNS UNDER UNIAXIAL AND BIAXIAL ECCENTRIC LOADS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17308@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Trata-se de um estudo experimental do comportamento de pilares de alta resistência submetidos à flexão composta reta e oblíqua. Foram ensaiados oito pilares com seção transversal de 25x15 cm e comprimento de 300 cm, compondo duas séries de 4 pilares cada uma. Na primeira série, a resistência do concreto foi de 40 MPa e os quatro pilares foram ensaiados à flexão composta oblíqua. Na segunda série, a resistência do concreto foi de 70 MPa e os quatro pilares foram ensaiados à flexão composta reta. Em cada série, a variável foi a taxa

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17

Ozbakkaloglu, Togay. "Seismic performance of high-strength concrete columns in FRP stay-in-place formwork." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/29245.

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The use of high-strength concrete (HSC), with strengths reaching 130 MPa, has increased in recent years due to its superior performance and strength. Structures are designed and built utilizing HSC, especially in columns of multi-story buildings. However, the use of high-strength concrete (HSC) in seismically active regions poses a major concern because of the brittle nature of the material. The confinement requirements for HSC columns may be prohibitively stringent since they require proportionately greater confinement than columns of normal-strength concrete. An alternative to conventional c

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De, Carufel Sarah. "Effect of High-Performance Steel Materials on the Blast Behaviour of Ultra-High Performance Concrete Columns." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35380.

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Previous events have demonstrated the vulnerability of reinforced concrete infrastructure to blast loading. In buildings, ground-story columns are key structural components, and their failure can lead to extensive damages which can cause progressive collapse. To prevent such disasters, the steel reinforcement in such columns must be properly detailed to ensure sufficient strength and ductility. The use of modern concrete materials such ultra-high performance concrete (UHPC) is one potential solution to improve the blast performance of columns. UHPC shows high compressive strength, high tensile

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Bursle, Sonia Jean Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Influence of material related parameters on the axial shortening of high strength concrete columns." Awarded by:University of New South Wales. Civil & Environmental Engineering, 2009. http://handle.unsw.edu.au/1959.4/44512.

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The prediction of axial shortening is necessary in structures sensitive to its effects, such as tall bUildings. Potential strength and serviceability problems associated with axial shortening include damage to the building facade and rigid services such lift gUide rails. Differential shortening between adjacent elements can cause floor flatness problems and excessive additional bending moments and shear forces can be induced in horizontal members. The development of high strength concrete (HSq and the consequent increase in building heights has been rapid with little published information inco

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20

ALVES, EVELYN GABBAY. "INTERACTION DIAGRAMS FOR THE DESIGN OF HIGH STRENGTH CONCRETE SLENDER COLUMNS AND CROSS-SECTIONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1784@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A utilização do concreto de alta resistência já é uma realidade e muitos países estão adaptando suas normas para levar em conta as propriedades deste material. No dimensionamento de pilares esbeltos e seções com concreto de alta resistência é importante observar a relação tensão- deformação adotada no cálculo, pois enquanto para o concreto convencional a deformação máxima, ecu, é 0,0035, para o de alta resistência esta deformação depende do valor da resistência do concreto, diminuindo com o aumento do fck. Para um concret

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21

Alameddine, Fadel F. "Seismic design recommendations for high-strength concrete beam-to-column connections." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185042.

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The present recommendations of the ACI-ASCE Committee 352 for the design of ductile moment resistant beam to column connections limit the joint shear stress to γ√f'(c), where the factor γ is a function of the joint geometric classification and the loading condition. The value of compressive strength f'(c) used in the above expression should not exceed 6000 psi. This limitation causes considerable difficulty in the design of high-strength concrete frames. An experimental study of twelve large-scale exterior beam to column subassemblies was completed at The University of Arizona. The specimens w

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Sabri, Amirreza. "Seismic Retrofit of Concrete Columns by Transverse Prestressing." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26079.

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Performance of buildings and bridges during past earthquakes has indicated that many of these structures are vulnerable to seismic damage and structural collapse. The deficiencies in pre-1970s design codes have resulted in poor performance of reinforced concrete structures during seismic excitations. The Richter Magnitude 6.6 - 1971 San Fernando Earthquake raised awareness for seismic retrofit needs of existing buildings for the first time. The majority of deficiencies of vulnerable concrete columns can be overcome through seismic retrofits that involve additional transverse reinforcement. Thi

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ENCISO, ROXANA OLARTE. "BEHAVIOR OF SLENDER HIGH STRENGTH CONCRETE COLUMNS SUBJECTED TO AXIAL LOAD AND BENDING ABOUT ONE AXIS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16425@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Este trabalho apresenta um estudo experimental do comportamento de pilares esbeltos de alta resistência submetidos à flexão composta reta. Foram ensaiados oito pilares divididos em duas séries, sendo uma série com concreto de 40 MPa e a outra com concreto de 80 MPa aos vinte e oito dias. Todos os pilares tinham seção transversal de 15x25 cm e altura de 300 cm. Em cada série, a variável foi a taxa de armadura longitudinal que assumiu quatro valores diferentes. O objetivo foi verificar os valores da excentricidade de segunda ordem

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Queiroga, Marcos Vinícios Mendonça de. "Análise experimental de pilares de concreto de alto desempenho submetidos à compressão simples." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-13122017-164439/.

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O objetivo da pesquisa foi obter subsídios para o projeto de pilares de concreto de alta resistência, submetidos à compressão simples, com concreto de resistência média de 60 MPa. Este projeto faz parte de um plano mais amplo onde já se têm resultados experimentais que traduzem o comportamento de pilares moldados com concreto de resistência média à compressão de 80 MPa. Nestes constatou-se a participação isolada do núcleo de concreto definido pelo eixo da armadura transversal como seção resistente dos pilares. Na etapa experimental foram ensaiados pilares com seções transversais quadradas de 2

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Koch, Pierre-Alexandre. "Seismic response of high-strength concrete beam-column-slab specimens." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21308.

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The effects of high-strength concrete on the seismic performance of reinforced concrete exterior beam-column-slab subassemblages were investigated by comparing the behaviour of three full-scale specimens. Two specimens, one constructed with normal-strength concrete and one constructed with high-strength concrete, were designed with square columns. The specimen tested in this thesis was constructed with high-strength concrete and designed with a circular column. All the specimens were designed as ductile moment-resisting frames and tested under reversed-cyclic loading.<br>The Canadian Standard,

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Koch, Pierre-Alexandre. "Seismic response of high-strength concrete beam-column-slab specimens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0030/MQ50632.pdf.

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Jacomassi, Luciana Marques da Costa [UNESP]. "Avaliação do comportamento de pilares de concreto de alta resistência: simulação numérica utilizando o código de cálculo CASTEM-2000." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/94537.

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Made available in DSpace on 2014-06-11T19:27:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-12-10Bitstream added on 2014-06-13T18:31:07Z : No. of bitstreams: 1 jacomassi_lmc_me_ilha.pdf: 1853171 bytes, checksum: f9955a37141d1b46cbca1dacc35af9be (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A demanda crescente pela utilização de Concreto de Alta Resistência (CAR) torna necessária a definição de critérios e procedimentos de análise do comportamento estrutural desse material. Nesse sentido, este trabalho apresenta a discussão de resultados experiment

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Ghannoum, Carla M. "Effect of high-strength concrete on the performance of slab-column specimens." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21294.

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The behaviour of interior slab-column connections in flat plates is investigated. The first part of this thesis discusses six two-way slab-column specimens which were designed such that they would fail in punching shear. The parameters investigated were the use of high-strength concrete and the concentration of the slab flexural reinforcement in the immediate column region. The effects of these parameters on the punching shear capacity, negative moment cracking, and stiffness of the two-way slab specimens are investigated.<br>The second part of this thesis is a comparison of the test results o

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Ghannoum, Carla M. "Effect of high-strength concrete on the performance of slab-column specimens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0027/MQ50609.pdf.

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Jacomassi, Luciana Marques da Costa. "Avaliação do comportamento de pilares de concreto de alta resistência : simulação numérica utilizando o código de cálculo CASTEM-2000 /." Ilha Solteira : [s.n.], 2008. http://hdl.handle.net/11449/94537.

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Orientador: Mônica Pinto Barbosa<br>Banca: Amarildo Tabone Paschoalini<br>Banca: José Samuel Giongo<br>Resumo: A demanda crescente pela utilização de Concreto de Alta Resistência (CAR) torna necessária a definição de critérios e procedimentos de análise do comportamento estrutural desse material. Nesse sentido, este trabalho apresenta a discussão de resultados experimentais publicados e as simulações numéricas de pilares armados de CAR submetidos à compressão axial simples. Utilizando o Código CASTEM 2000, é feita uma modelagem numérica bidimensional e análise via Método dos Elementos Finitos

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Li, Jing, and 李靜. "Effects of diagonal steel bars on performance of interior beam-column joints constructed with high-strength concrete." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31244464.

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Sudano, Alexandre Luis. "Desenvolvimento de estratégias híbridas de reforço de pilares de concreto armado por encamisamento com compósitos de alto desempenho." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-06122010-114259/.

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Tradicionalmente no reforço de pilares de concreto armado são empregados materiais já consagrados, como as chapas de aço, o próprio concreto armado, e, mais recentemente, o polímero reforçado com fibras (PRF). Porém existem ainda alguns problemas associados a estes materiais ou, mais especificamente, às técnicas utilizadas para promover o reforço, destacando-se a dificuldade de execução, comportamento frágil e perda de área útil em função do aumento da seção transversal do pilar original. Por outro lado, o desenvolvimento da tecnologia dos materias e a constante inovação tecnológica tem como r

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Nardin, Silvana De. "Estudo teórico-experimental de pilares mistos compostos por tubos de aço preenchidos com concreto de alta resistência." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-15102003-180415/.

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O emprego de pilares mistos formados por tubos de aço preenchidos com concreto de alta resistência, sobretudo em edifícios altos, é uma tendência em diversos países europeus, americanos e asiáticos. A tais elementos são atribuídas vantagens como: alta resistência e ductilidade, economia de materiais e mão-de-obra, redução das dimensões da seção transversal e melhoria no comportamento dos materiais aço e concreto, devido ao efeito de confinamento. Buscando suprir algumas carências de conhecimento, procura-se obter dados experimentais sobre o comportamento de pilares mistos axialmente comprimido

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Viapiana, Lincoln Grass. "Influência do confinamento na resistência e ductilidade de pilares curtos de concreto de ultra alta resistência submetidos à compressão centrada." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-24052016-111841/.

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Neste estudo foram analisados experimentalmente o comportamento de 24 pilares curtos de Concreto de Ultra Alta Resistência - CUAR, confinados por armaduras helicoidais, avaliando especificamente os acréscimos de resistência e ductilidade obtidos com diferentes níveis de pressão lateral de confinamento. Na etapa experimental foram realizados ensaios de pilares curtos de CUAR com as seguintes características: - seção circular de 7,2 cm de diâmetro e comprimento de 23 cm, e quatro níveis de resistência à compressão do concreto sendo eles, 165, 175, 200 e 229 MPa, dosados sem e com adição de fibra

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Nardin, Silvana De. "Pilares mistos preenchidos : estudo da flexo-compressão e de ligações viga-pilar." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-28112003-163232/.

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Este trabalho aborda o estudo de pilares preenchidos flexo-comprimidos e algumas ligações viga-pilar preenchido. Para ambos, são realizadas experimentações com modelos físicos e numéricos, sendo que para os pilares preenchidos um amplo estudo paramétrico foi desenvolvido. Ao todo, foram ensaiados 13 pilares preenchidos flexo-comprimidos, cujos valores de força última são comparados com aqueles provenientes da simulação numérica via programa CFT e, os demais resultados, comentados e discutidos. Aferido, o programa CFT foi utilizado no estudo paramétrico com o intuito de avaliar a influência de

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Damas, Alexandra Pinto. "Estudo de confiabilidade no projeto de pilares esbeltos de concreto de alta resistência." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/134894.

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A nova norma NBR 6118:2014, Projeto de estruturas de concreto – Procedimento, traz recomendações específicas para o dimensionamento de estruturas de concreto com resistência característica à compressão (fck) superior a 50 MPa, às quais não faziam parte de sua versão anterior NBR 6118:2007. Os pilares de concreto armado são as peças estruturais que mais se beneficiam com a utilização de concretos de elevada resistência, pois o seu emprego torna possível a redução da seção transversal, o emprego de menores taxas de armadura e um melhor desempenho estrutural. Então, o objetivo deste trabalho é av

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Germain, Olivier. "Contribution à l'analyse du comportement et au dimensionnement des colonnes élancées en béton armé." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210894.

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Aujourd’hui, la technologie du béton ayant fortement évolué, il est, sous certaines conditions, réaliste de construire des éléments structuraux en béton ayant à la compression une résistance de 90N/mm² voire nettement plus. En conséquence, l’ingénieur concepteur peut être amené dans le cadre du dimensionnement des colonnes à en diminuer les dimensions transversales pour des raisons esthétiques ou d’encombrement. <p><p>Inévitablement, cette diminution de la section transversale induit une augmentation de l’élancement et augmente ainsi les risques des instabilités de flambement. <p>A cette quest

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Torrico, Francisco Aguirre. "Análise teórica e experimental do comportamento de modelos de pilares esbeltos de concreto de alta resistência, considerando a ductilidade." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-06052010-105804/.

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Esta tese discute as análises teórica e experimental de pilares de seção retangular, esbeltos, confinados por estribos, de concreto de alta resistência, sujeitos à flexo-compressão, considerando os estados limites últimos de ruptura do concreto ou por deformação excessiva das barras da armadura ou por instabilidade. Foram ensaiados 12 modelos de pilares com esbeltez mecânica igual a 92, compondo três séries de 4 pilares cada uma; os parâmetros estudados foram a excentricidade da força, a taxa volumétrica de armadura transversal e a resistência do concreto. Em uma segunda fase, foram analisados

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Leite, Junior Geraldo Silveira. "Colunas mistas esbeltas de aço preenchidas com concreto de alta resistencia em temperatura ambiente e em situação de incendio." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258263.

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Orientador: Armando Lopes Moreno Junior<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-13T04:09:02Z (GMT). No. of bitstreams: 1 LeiteJunior_GeraldoSilveira_D.pdf: 5865663 bytes, checksum: d49ee862fe97f6a26434a033e8947468 (MD5) Previous issue date: 2009<br>Resumo: Neste trabalho, foi investigado em laboratório o efeito do fogo em colunas esbeltas de aço sem preenchimento e preenchidas com concreto de alta resistência que foram submetidas a três diferentes níveis de carga (30%, 50% e 70%). O

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Hernández, Figueirido David. "Estudio experimental del pandeo de perfiles tubulares rectangulares de acero, rellenos de hormigón de alta resistencia, bajo carga axial y diagrama de momentos variables." Doctoral thesis, Editorial Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/14724.

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El empleo de estructuras mixtas de acero-hormigón ha experimentado un aumento creciente en las últimas décadas, dado qu permiten un mejor aprovechamiento de las características de los materiales empleados, en comparación con estructuras de hormigón armado y acero trabajando de forma independiente. Este trabajo de investigación se centra en el estudio y análisis de pilares mixtos de tipo perfil tubular de acero, CFT (Concrete Filled Tube), rectangular o cuadrado, rellenos de hormigón de alta resistencia. Este tipo de pilares cuenta con ventajas respecto a otros pilares mixtos como el hecho de

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Júnior, Humberto Correia Lima. "Avaliação da ductilidade de pilares de concreto armado, submetidos à flexo-compressão reta com e sem adição de fibras metálicas." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-30032016-151513/.

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Este trabalho tem como objetivo investigar o comportamento pós-pico de pilares com concretos de alta resistência confinados com e sem adição de fibras metálicas, submetidos à flexo-compressão. Para tanto, realizou-se inicialmente uma extensa revisão bibliográfica sobre o tema, na qual, elencaram-se os principais fatores que influenciam o comportamento pós-pico desses elementos estruturais. Em seguida, desenvolveram-se estudos paramétricos com o intuito de estabelecer os modos de influência de cada fator. Com base nesses estudos preliminares, um programa experimental, dividido em duas fases, fo

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Kim, Sungjoong. "Behavior of high-strength concrete columns." 2007. http://www.lib.ncsu.edu/theses/available/etd-03122007-103859/unrestricted/etd.pdf.

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Zaina, M. "Strength and ductility of fibre reinforced high strength concrete columns /." 2005. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20051114.101729/index.html.

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Billinger, Mark P. "Behaviour of slender high-strength concrete columns." 1996. http://arrow.unisa.edu.au:8081/1959.8/81184.

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Fu, Cheng-Yao, and 傅正堯. "Seismic Performance of High Strength Concrete-Filled Tubular Columns." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/19845077944430103466.

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碩士<br>國立交通大學<br>土木工程學研究所<br>86<br>An experimental research is conducted to study the strength and ductility of the concrete-filled steel welded tubular columns. Nine specimens were tested under constant compressive load and cyclic lateral loads to simulate the axial load as well as the seismic load. The parameters considered were strength of the concrete, width-thickness ratio, and type of stiffening (longitudinal stiffener or shear stud). 　　Observations during the tests indicate that the local buckling of the steel plate occurred after yielding. The failure of specimens were reached when the

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Alrasyid, Harun, and Harun Alrasyid. "Seismic Shear Behavior of High Strength Reinforced Concrete Columns." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/19304508230934519962.

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博士<br>國立臺灣科技大學<br>營建工程系<br>103<br>Advancement in material technology has led to the development of high-strength materials. Using high-strength concrete and steel in reinforced concrete column could give significant benefit by reducing dimension and steel congestion. However, when high-strength materials used in column for shear design, ACI 318 is not allowed to use their full strength. The current shear design provisions of ACI 318-14 limit the concrete compressive strength to 70 MPa and yield strength of shear reinforcement to 420 MPa. The major objective of this research was to identify the

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NGUYEN, NGUYEN VAN BAO, and NGUYEN VAN BAO NGUYEN. "Seismic Shear Behavior of High-Strength Reinforced Concrete Columns." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/19228230803625900374.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>105<br>The use of high-strength reinforcement and high-strength concrete in reinforced concrete structures can help either to decrease the size of concrete components or to increase the spans of floor in concrete buildings. In addition, the combination of high-strength concrete and high-strength shear reinforcement could result in decreasing the consumption of aggregate and steel, then promoting environmental sustainability. In previous research, 25 high-strength columns have been tested with shear span to depth ratio (a/d) of 1.88. Moreover, based on the test data o

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Ting, Ying-Che, and 丁英哲. "Experimental Investigation for Buckling Strength of CFT Columns with High Strength Concrete." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/37424658832233928033.

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碩士<br>國立中興大學<br>土木工程學系<br>92<br>The AISC analysis of composite columns is done in the same way as for ordinary structural steel compression members, using the same equations from AISC Chapter E, but with values of Fy, E, and r that have been modified through the use of numerical coefficients c1, c2 and c3 . These coefficients c1, c2 and c3 are used to transform plain concrete into equivalent steel with the limitations that the compressive strength of concrete must be ranged between 3 and 8 ksi. Because the high strength of concrete has been developed in the past decade, the use of high stren

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Sokoli, Drit. "Seismic performance of concrete columns reinforced with high strength steel." Thesis, 2014. http://hdl.handle.net/2152/28260.

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Test results are presented from an experimental program carried at the University of Texas at Austin aimed at evaluating the seismic performance of concrete columns reinforced with high-strength steel. Comparisons are made between the performance of columns reinforced with conventional Grade 60 steel, and the higher Grade 80. The high-strength steel used in this study is the result of a recent push in the U.S. to produce higher grade reinforcing bars with relatively high ductility. All steel used satisfied the specifications of ASTM A706. Column specimens were tested under constant axial load

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Sudarmadji, Yonathan, and 陳建國. "Flexural Behavior of High Strength Concrete-Filled Steel Box Columns." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/494p8p.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>99<br>This thesis is to experimentally investigate seismic behavior of concrete filled box column (CFBC) subjected to constant axial load combined cyclically lateral loading. This experiment used the material with 3.5 tf/cm2 for steel plate and 700 kgf/cm2 for concrete stress, in which Taiwan SRC code has 560 kgf/cm2 as the limit for concrete stress. The experiment will test 10 columns of CFBC. The parameters studied in this test comprised: the required confining stress of tie rods for CFBC, effectiveness of b/t ratio, and the suitability of high strength concrete.

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