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高轴压比下钢管混凝土边框组合剪力墙抗震性能试验研究 总被引：8，自引：1，他引：7
钢管混凝土边框组合剪力墙是一种适用于高层及超高层建筑的新型组合剪力墙。轴压比是影响剪力墙抗震性能的一个主要因素,高层建筑底部轴压比较大。本文进行了1/4缩尺的1个普通钢筋混凝土剪力墙模型和1个钢管混凝土边框组合剪力墙模型在高轴压比下的低周反复荷载试验。在试验研究基础上,对比分析了剪力墙的承载力、延性、刚度及其衰减过程、滞回特性、耗能能力及破坏特征,建立了钢管混凝土边框组合剪力墙的承载力计算模型,计算结果与实测结果符合较好。研究表明:在高轴压比下钢管混凝土边框组合剪力墙与普通剪力墙相比抗震性能显著提高。 相似文献
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提出了钢管混凝土边框内藏斜撑肋钢板组合中高剪力墙.为研究这种组合剪力墙的抗震性能,进行了5个不同构造的中高剪力墙模型低周反复荷载试验.分析了试件的损伤特征、承载力、耗能、滞回特性,提出了正截面抗弯承载力计算模型,计算结果与试验符合较好.研究表明:钢管混凝土边框内藏钢板组合剪力墙具有较高的承载力和良好的耗能性能;钢管混凝土边框内藏带斜撑肋钢板中高剪力墙,适于在墙体厚度小于钢管尺寸或内藏钢板厚度较薄的“强边框、弱墙体”情况下应用,可明显减轻钢管混凝土边框底部的损伤,延缓墙体性能退化,提高组合剪力墙的抗震能力. 相似文献
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在大连国际会议中心核心筒墙体抗震设计中,采用了一种钢管混凝土叠合边框墙肢内藏钢板、连梁内藏钢桁架的组合双肢剪力墙。为研究其抗震性能,进行了1个1/7缩尺的这种新型组合双肢剪力墙模型的低周反复荷载试验,分析了其承载力、延性、刚度及其退化、滞回特性、耗能能力和破坏特征,重点研究了钢管混凝土叠合边框、墙肢内藏钢板、连梁内藏钢桁架之间的共同工作性能。研究表明:内藏钢板-钢桁架可显著提高钢管混凝土叠合边框双肢剪力墙的承载力和延性性能;钢管混凝土叠合边框可充分发挥其承载力高、不易开裂、延性好的优势。文中提出了该新型组合双肢剪力墙的承载力计算模型,计算结果与实测结果符合较好。 相似文献
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不同构造措施的钢管混凝土边框钢板剪力墙抗震性能试验研究 总被引：3，自引：0，他引：3
钢管混凝土边框钢板剪力墙是一种新型抗震剪力墙,为了比较不同构造措施对该新型剪力墙抗震性能的影响,进行了3个剪跨比为1.5的钢管混凝土边框钢板剪力墙低周反复荷载试验。其中,试验模型1为墙体钢板与边框柱钢管焊接,试验模型2为墙体钢板与边框柱钢管螺栓连接,试验模型3为墙体钢板开孔并与边框柱钢管焊接。通过试验研究,比较了各剪力墙的破坏特征、滞回特性、承载力、刚度、延性以及耗能能力。结果表明：在墙体钢板与边框柱钢管的连接方式中,采用焊接或栓接对剪力墙的整体性能影响不大;与普通钢管混凝土边框钢板剪力墙相比,钢板开孔钢管混凝土边框钢板剪力墙在开孔率不大的情况下,其承载力、延性、刚度和耗能能力没有明显变化。 相似文献
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圆钢管混凝土边框剪力墙抗震性能试验研究 总被引：1，自引：0，他引：1
圆钢管混凝土边框剪力墙是在普通混凝土剪力墙基础上研发的一种新型组合剪力墙。其将圆钢管混凝土柱和普通混凝土剪力墙进行了优势组合,形成多道抗震防线。为了解该组合剪力墙的抗震性能,进行了3个1/5缩尺试件的低周反复荷载试验,其中包括1个圆钢管混凝土柱框架结构、1个普通混凝土剪力墙和1个圆钢管混凝土边框剪力墙。在试验研究基础上,分析了圆钢管混凝土边框剪力墙的承载力、刚度及其退化过程、延性、滞回特性、耗能能力及破坏特征。研究表明:圆钢管混凝土边框剪力墙的抗震性能比普通混凝土剪力墙显著提高,且其承载力、抗震耗能能力均高于圆钢管混凝土柱框架和普通混凝土剪力墙承载力、抗震耗能能力之和,可用于高层和超高层建筑的抗震设计。 相似文献
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钢管混凝土叠合柱边框内藏钢桁架核心筒抗震性能试验研究 总被引：1，自引：1，他引：0
为进一步改善混凝土核心简的抗震性能,本文提出了钢管混凝土叠合柱边框内藏钢桁架组合核心筒.进行了2个1/6缩尺的核心筒模型在低周反复荷载下的抗震性能试验研究,1个为钢管混凝土叠合柱边框毛组合核心筒,1个为钢管混凝土叠合柱边框内藏钢桁架组合核心筒.通过试验,对比分析了2个核心简的承载力、延性、刚度及其衰减、滞回特性、耗能能力及破坏特征,给出了钢管混凝土叠合柱边框内藏钢桁架组合核心筒的承载力计算模型,计算结果与实测值符合较好.研究表明,钢管混凝土叠合柱边框内藏钢桁架组合核心筒与钢管混凝土叠合柱边框组合核心筒相比,其抗震性能明显提高. 相似文献
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钢管混凝土叠合边框内藏钢桁架剪力墙振动台试验研究 总被引：1，自引：0，他引：1
进行了4个钢管混凝土叠合边框剪力墙模型的模拟地震振动台试验,包括:1个高宽比为1.6的钢管混凝土叠合边框剪力墙,1个高宽比为1.6的钢管混凝土叠合边框内藏钢桁架剪力墙,1个高宽比为3.0的为钢管混凝土叠合边框剪力墙,1个高宽比为3.0的钢管混凝土叠合边框内藏钢桁架剪力墙。试验中输入Taft地震波,测试了各试件在不同峰值加速度下的时程地震反应及其动力特性,分析了剪力墙损伤过程及破坏特征。研究表明,钢管混凝土叠合边框内藏钢桁架剪力墙比普通钢管混凝土叠合柱边框剪力墙承载力高、刚度退化慢、延性好、抗震耗能能力强。 相似文献
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提出了钢管混凝土边框内藏钢板的组合剪力墙,进行了模型抗震性能试验,表明其抗震性能良好。为进一步分析该组合剪力墙的受力特点,基于试验研究,引入了平截面假定,提出了正截面受弯承载力简化计算模型,给出了用条带法计算受弯承载力的公式并编制了计算程序。计算分析了钢管壁厚、内藏钢板厚度、混凝土强度等级对剪力墙受弯承载力的影响,计算结果与实测值符合较好。研究表明:增大钢管壁厚,剪力墙抗弯承载力明显提高;增大内藏钢板厚度,剪力墙承载力提高,但比增大钢管壁厚提高的效率低;混凝土强度等级提高,剪力墙抗弯承载力有一定的提高,但提高幅度随着边框钢管壁厚增大而减小;钢管壁厚、内藏钢板厚度、墙体截面厚度、混凝土强度应合理匹配,以充分发挥该组合剪力墙的抗震效能。 相似文献
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圆钢管混凝土边框内藏桁架剪力墙是一种新型组合剪力墙.为了解这种剪力墙的抗震性能,进行了 3个1/5缩尺试件的低周反复荷载试验.3个试件中,1个为圆钢管混凝土柱框架结构,1个为圆钢管混凝土边框-钢桁架结构,1个为圆钢管混凝土边框内藏钢桁架剪力墙.基于试验,对比分析了各试件的承载力、刚度及其退化过程、滞回特性、耗能能力及破... 相似文献
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Research on seismic performance of shear walls with concrete filled steel tube columns and concealed steel trusses 总被引：1，自引：1，他引：0
In order to further improve the seismic performance of RC shear walls, a new composite shear wall with concrete filled steel
tube (CFT) columns and concealed steel trusses is proposed. This new shear wall is a double composite shear wall; the first
composite being the use of three different force systems, CFT, steel truss and shear wall, and the second the use of two different
materials, steel and concrete. Three 1/5 scaled experimental specimens: a traditional RC shear wall, a shear wall with CFT
columns, and a shear wall with CFT columns and concealed steel trusses, were tested under cyclic loading and the seismic performance
indices of the shear walls were comparatively analyzed. Based on the data from these experiments, a thorough elastic-plastic
finite element analysis and parametric analysis of the new shear walls were carried out using ABAQUS software. The finite
element results of deformation, stress distribution, and the evolution of cracks in each phase were compared with the experimental
results and showed good agreement. A mechanical model was also established for calculating the load-carrying capacity of the
new composite shear walls. The results show that this new type of shear wall has improved seismic performance over the other
two types of shear walls tested. 相似文献
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Seismic behavior and strength capacity of steel tube‐reinforced concrete composite columns 
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下载免费PDF全文 The steel tube‐reinforced concrete (ST‐RC) composite column is a novel type of composite column, which consists of a steel tube embedded in RC. In this paper, the seismic behavior of ST‐RC columns is examined through a series of experiments in which 10 one‐third scale column specimens were subjected to axial forces and lateral cyclic loading. The test variables include the axial force ratio applied to the columns and the amount of transverse reinforcement. All specimens failed in a flexural mode, showing stable hysteresis loops. Thanks to the steel tube and the high‐strength concrete it is filled with, the ST‐RC column specimens had approximately 30% lower axial force ratios and 22% higher maximum bending moments relative to the comparable RC columns when subjected to identical axial compressive loads. The amount of transverse reinforcement made only a small difference to the lateral load‐carrying capacity but significantly affected the deformation and energy dissipation capacity of the ST‐RC columns. The specimens that satisfied the requirements for transverse reinforcement adopted for medium ductile RC columns as specified by the Chinese Code for Seismic Design of Buildings (GB 50011‐2010) and EuroCode 8 achieved an ultimate drift ratio of around 0.03 and a displacement ductility ratio of approximately 5. The design formulas used to evaluate the strength capacity of the ST‐RC columns were developed on the basis of the superposition method. The predictions from the formulas showed good agreement with the test results, with errors no greater than 10%. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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A composite shear wall concept based on concrete filled steel tube （CFST） columns and steel plate （SP） deep beams is proposed and examined in this study. The new wall is composed of three different energy dissipation elements： CFST columns; SP deep beams; and reinforced concrete （RC） strips. The RC strips are intended to allow the core structural elements - the CFST columns and SP deep beams - to work as a single structure to consume energy. Six specimens of different configurations were tested under cyclic loading. The resulting data are analyzed herein. In addition, numerical simulations of the stress and damage processes for each specimen were carried out, and simulations were completed for a range of location and span-height ratio variations for the SP beams. The simulations show good agreement with the test results. The core structure exhibits a ductile yielding mechanism characteristic of strong column-weak beam structures, hysteretic curves are plump and the composite shear wall exhibits several seismic defense lines. The deformation of the shear wall specimens with encased CFST column and SP deep beam design appears to be closer to that of entire shear walls. Establishing optimal design parameters for the configuration of SP deep beams is pivotal to the best seismic behavior of the wall. The new composite shear wall is therefore suitable for use in the seismic design of building structures. 相似文献
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