基于可更换构件理念,提出了一种框架摇摆墙结构的实现形式。在试验研究基础上,构建了4种不同节点形式的有限元模型,计算结果表明:延性连接件与摇摆墙和框架之间应采用刚接节点进行模拟,摇摆墙与基础之间的橡胶垫与抗剪键可采用铰接节点进行简化;随着连接件直径和摇摆墙厚度增加,框架摇摆墙层间位移更为均匀,结构承载力随之增加但增加幅度逐渐减小。实际工程中应首先结合结构抗震需求确定较为合理的摇摆墙厚度,而后再按本文方法优化连接件直径和构造。
Abstract
A type of practicable frame-rocking wall structure was proposed with the concept of replaceable member. According to the experimental study, four kinds of finite element (FE) models with different joint types were performed for simulating frame-rocking wall structure. The FE results show that the rigid joint should be adopted between ductility connectors and rocking wall or frame, while the rubber and shear keys between rocking wall and base can be simplified into hinge joint. Parametric analysis show that, as the increasing of the diameter of ductility connector and the thickness of rocking wall, inter-storey drifts of frame-rocking wall structure become more uniformly distributed, which leads to the increase of bearing capacity of the structure but the increasing rate becomes slower. The reasonable thickness of rocking wall should be determined according to the seismic demand, then the diameter and configuration of ductility connector can be optimized as presented in the paper.
关键词
框架摇摆墙 /
可更换构件 /
有限元模型 /
刚接节点 /
铰接节点 /
参数分析
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Key words
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frame-rocking wall;replaceable member;FE model;rigid joint;hinge joint;parametric analysis
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参考文献
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