Comparison of web plate numerical models for self‐centering steel plate shear walls
Comparison of web plate numerical models for self‐centering steel plate shear walls
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DOI：
10.1002/eqe.2578
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发表时间：
2015-09
影响因子：
4.5
通讯作者：
P. Clayton;Ching‐Yi Tsai;J. Berman;L. Lowes
中科院分区：
文献类型：
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作者：
P. Clayton;Ching‐Yi Tsai;J. Berman;L. Lowes
先前的研究表明，自定心钢板剪力墙（SC-SPSW）能够在多个危险级别下实现增强的抗震性能，包括在设计级别地震后重新定心。在对SC-SPSW进行数值建模时，这些研究考虑了理想化的仅受拉钢板剪力墙（SPSW）腹板性能。研究表明，腹板的行为比理想化模型预测的更为复杂，腹板可以提供比理想化模型预测的更多的强度、刚度和能量耗散。腹板行为的理想化模型被广泛用于SPSW数值模型中，其中抗弯边界框架提供补充滞回阻尼和刚度;然而，在SC-SPSW中，后张边界框架设计为在地震期间保持弹性，考虑到更复杂的腹板行为可能对数值模拟的抗震性能估计产生重大影响。本文提出了不同的方法来建模SC-SPSW。这些模型的响应与实验结果进行了比较。一个简单的修改的张力只有模型，被称为拉压条模型，提供了一个合理的近似SC-SPSW的行为。比较了采用拉-压腹板模型和拉-压腹板模型的SC-SPSW的非线性反应时程分析结果，以评估腹板行为的近似性如何影响SC-SPSW的抗震性能。版权所有© 2015约翰威利父子有限公司.
Previous research has shown that self‐centering steel plate shear walls (SC‐SPSWs) are capable of achieving enhanced seismic performance at multiple hazard levels, including recentering following design‐level earthquakes. When modeling SC‐SPSWs numerically, these studies considered an idealized tension‐only steel plate shear wall (SPSW) web plate behavior. Research has shown that web plate behavior is more complex than predicted by the idealized model, and web plates can provide more strength, stiffness, and energy dissipation than predicted by the idealized model. The idealized model of web plate behavior is used widely in SPSW numerical models where the moment‐resisting boundary frame provides supplemental hysteretic damping and stiffness; however, in SC‐SPSWs, where the post‐tensioned boundary frame is designed to remain elastic during an earthquake, accounting for the more complex web plate behavior can have a significant impact on seismic performance estimates from numerical simulation. This paper presents different methods for modeling SC‐SPSWs. Responses from these models are compared with experimental results. A simple modification of the tension‐only model, referred to as the tension‐compression strip model, is shown to provide a reasonable approximation of SC‐SPSW behavior. Results from nonlinear response history analyses of SC‐SPSWs with the tension‐only and tension‐compression web plate models are compared to assess how the approximation of web plate behavior affects SC‐SPSW seismic performance. Copyright © 2015 John Wiley & Sons, Ltd.