Equivalent Diagonal Strut Method for Masonry Walls in Pinned Connection and Multi-Bay Steel Frames
Equivalent Diagonal Strut Method for Masonry Walls in Pinned Connection and Multi-Bay Steel Frames
复制标题
销轴连接和多开间钢框架砌体墙的等效对角支撑法
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
P. Lourenço
中科院分区：
文献类型：
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作者：
S. Emami;M. Mohammadi;P. Lourenço
等效压杆法是抗震规范中常用的框架填充板模拟方法之一。填充墙框架的强度和刚度等力学参数主要受材料特性、等效支撑厚度和宽度的控制。支柱宽度取决于填充物和框架之间的接触长度。已有的研究表明，周边框架的连接刚度影响接触长度，从而影响填充框架的反应。利用有限元软件ABAQUS对框架连接刚度对填充墙性能的影响进行了参数化有限元分析。根据试验数据对有限元模型进行了验证。结果表明，铰接钢框架填充板的刚度和强度分别是刚接钢框架填充板刚度和强度的0.9倍和0.8倍。采用等效杆法对参数化有限元分析结果进行了验证。此外，本文还指出，对于刚接和铰接连接的多跨框架，其等效斜压杆具有与单跨框架相同的性能。
Equivalent compression strut is one of the most prevalent approaches recommended in seismic codes to simulate infill panels in the frames. The mechanical parameters of infilled frames, such as strength and stiffness, are controlled by material properties, thickness and width of equivalent strut. The strut width depends on the contact length between the infill and the frame. Previous studies have shown that the connection rigidity of the surrounding frame affects the contact length and consequently the response of infilled frame. Parametric finite element analyses have been carried out to investigate the influence of frame connection rigidity on the behavior of infill walls using ABAQUS environment. The finite element models were verified based on the results of experimental data. It is shown that the stiffness and strength of infill panel in pinned connection steel frame are 0.9 and 0.8 times of those in rigid connection frame, respectively. The results of parametric finite element analyses were validated using equivalent strut method. Moreover, it is shown that the equivalent diagonal struts in multi-bay frame have the same properties of strut in one-bay frames for both rigid and pinned connections ones.