Seismic performance analysis of multi-span masonry infilled RC frame based on analytical strut model
Seismic performance analysis of multi-span masonry infilled RC frame based on analytical strut model
复制标题
基于解析支柱模型的多跨砌体填充RC框架抗震性能分析
DOI：
10.1088/1757-899x/933/1/012042
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Y. Hayati
中科院分区：
文献类型：
--
作者：
M. Maidiawati;J. Tanjung;F. Nugroho;Y. Hayati
根据以往的研究，砌体填充物对钢筋混凝土框架结构的横向强度、刚度和延性有一定的贡献是公认的。在过去的研究中，已经发展了一种对角支撑模型的分析方法来评估砌体填充体的抗震性能。在该模型中，砌体填充物通过压杆表示为框架-填充物界面处的分布力，框架-填充物接触长度通过与压缩平衡和侧向位移协调相关的静力平衡来评估。根据框架-填充体接触长度确定填充体的侧向强度。在本研究中，通过准静力循环横向荷载试验研究了双孔砖砌体填充RC框架的抗震性能。本文基于斜支撑模型对多跨砌体框架抗震性能的试验和分析结果，讨论了砌体砌块填充物的抗震性能。根据解析模型，在多跨填充框架的中柱顶部和底部分别由每个填充桩起反对称支撑作用。结果表明，试验值与分析值吻合较好。
According to previous studies, it was accepted that masonry infills have a contribution to lateral strength, stiffness, and ductility of reinforced concrete (RC) frames structures. In the past studies, an analytical method of diagonal strut model has developed for evaluating the seismic performance of masonry infill. In this model, the masonry infills were presented by compression struts as distributed forces at the frame-infill interfaces in which the frame-infill contact lengths were evaluated by static equilibrium related to compression balance and lateral displacement compatibility. The lateral strength of infill was determined based on frame-infill contact length. In the current study, an experimental study of quasi-static cyclic lateral loading tests was conducted to evaluate the seismic performance of two-bay brick masonry infilled RC frames. This paper discusses the results of seismic performance brick infills based on experimental and analysis results of the multi-span masonry RC frame applying the diagonal strut model. According to the analytical model, antisymmetric strut was acted at the top and bottom of the middle column of the multi-span infilled frame from each infill. As a result, good agreements of lateral strength of structures were obtained between the experimental and analytical values.