Coupled shear‐bending formulation for seismic analysis of stacked wood shear wall systems
Coupled shear‐bending formulation for seismic analysis of stacked wood shear wall systems
复制标题
用于叠木剪力墙系统抗震分析的耦合剪弯公式
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Lindt
中科院分区：
文献类型：
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作者：
S. Pei;J. Lindt
本文总结了一种新的用于分析叠层木剪力墙和多层木框架建筑的剪-弯耦合模型的发展。该模型主要研究木结构在地震作用下的动力响应。该公式旨在提供比现有纯剪切模型更通用的选项，因为新模型能够准确地捕获每个楼层隔板的整体横向响应，并将层间剪切变形和与由于杆伸长引起的隔板旋转相关的变形分开，这类似于Euler-Bernoulli梁模型中的弯曲变形。弯曲和剪切变形的耦合建模，提供了更准确的表示堆叠剪力墙系统的行为比纯剪切模型，特别是在组件的上部楼层。该公式与新开发的木剪力墙演化参数滞回模型相结合。使用隔离三层木剪力墙振动台测试的现有数据来验证模型预测的准确性。数值计算结果与振动台试验结果吻合得很好。连续杆抑制系统对三层堆叠木剪力墙的动力性能的影响也被成功地模拟。版权所有© 2009约翰威利父子有限公司。
A summary of the development of a new coupled shear‐bending model for analysis of stacked wood shear walls and multi‐story wood‐frame buildings is presented in this paper. The model focuses on dynamic response of light‐frame wood structures under seismic excitation. The formulation is intended to provide a more versatile option than present pure shear models in that the new model is capable of accurately capturing the overall lateral response of each story diaphragm and separates the inter‐story shear deformation and the deformation associated with rotation of the diaphragm due to rod elongation, which is an analogue to the bending deformation in an Euler–Bernoulli beam model. Modeling the coupling of bending and shear deformation is shown to provide more accurate representation of stacked shear wall system behavior than a pure shear model, particularly for the upper stories in the assembly. The formulation is coupled with the newly developed evolutionary parameter hysteretic model for wood shear walls. Existing data from a shake table test of an isolated three‐story wood shear wall were used to verify the accuracy of the model prediction. The numerical results agreed very well with shake table test measurements. The influence of a continuous rod hold‐down system on the dynamic behavior of the three‐story stacked wood shear wall was also successfully simulated. Copyright © 2009 John Wiley & Sons, Ltd.