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内藏桁架混凝土组合中高剪力墙抗震性能试验研究

Keywords: 钢筋混凝土,型钢,内藏桁架,组合剪力墙,抗震性能

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Abstract:

首先提出了内藏桁架混凝土组合剪力墙,其内藏桁架包括钢桁架、钢筋桁架及钢-钢筋组合桁架.该新型组合剪力墙包含2种组合,即不同受力体系-桁架与剪力墙的组合、不同材料-型钢与混凝土的组合,形成了双重组合剪力墙.进行了6个1/3缩尺的普通、内藏钢框架及内藏不同材料桁架混凝土中高剪力墙的抗震性能试验研究.在此基础上,对比分析了各剪力墙的刚度及其衰减过程、承载力、延性、滞回特性、耗能能力及破坏特征;建立了内藏桁架混凝土中高剪力墙的刚度和承载力计算模型,计算结果与实测结果符合较好;提出了该新型剪力墙的抗震设计建议.试验结果表明,内藏钢框架及内藏不同材料桁架混凝土中高剪力墙的抗震性能比普通混凝土中高剪力墙明显提高.

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