通过SRC框排架模型结构拟动力试验、伪静力试验以及结构中典型SRC异型节点的伪静力试验,研究约束剪力墙对结构破坏模式与耗能性能的影响。结果表明:剪力墙能够起到第一道抗震防线的作用,形成利于抗震的破坏模式;薄弱部位随着地震作用的增强由煤斗层、运转层到底部两层下移;结构的荷载-位移滞回曲线比较饱满,耗能性能较好;剪力墙对结构中SRC异型节点的裂缝开展具有很好的约束作用,沿纵横向同时布置约束剪力墙能够改善该类节点的破坏模式;约束剪力墙可明显提高SRC异型节点的耗能性能、承载能力与延性性能。本文的研究可为推广应用SRC框排架结构体系提供基础研究资料。
Abstract
Pseudo-dynamic and pseudo-static tests of SRC frame-bent model structure, and pseudo-static test of typical SRC abnormal joints are conducted to analyze the influence of constraint shear wall on the failure mode and energy dissipation performance. The results show that: the shear wall could be the first seismic line of the structure and the failure model is helpful to resist earthquakes; the weak part of the structure is down from coal hopper floor and operation floor to bottom two stories with the increase of the earthquake intensity; the load-displacement hysteretic curve is plump, and the energy dissipation performance is better; the shear wall has the significant restraint effect for the crack developing of SRC abnormal joints, and setting constraint shear walls along both vertical and horizontal direction could improve the failure mode of this kind of joint; setting constraint shear wall could enhance the energy dissipation performance, carrying capacity and ductility performance of SRC abnormal joints obviously. The research of this paper could provide the basic research data to promote the application of SRC frame-bent structure.
关键词
SRC框排架结构 /
约束剪力墙 /
异型节点 /
破坏模式 /
耗能性能 /
伪静力试验
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Key words
SRC frame-bent structure /
constraint shear wall /
abnormal joints /
failure mode /
energy dissipation behavior /
pseudo-static test
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