多连梁的计算方法及抗震性能分析
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（广东省建筑设计研究院，广州510010）[摘要] 介绍了结构设计中常采用的抗剪截面积等效和抗弯刚度等效的多连梁计算方法。按抗剪截面积等效方法计算多连梁的误差较大。按抗弯刚度等效方法计算多连梁相对较合理。本文推导了多连梁抗弯刚度等效的计算公式，在结构计算中可直接对抗弯刚度进行折减。双肢墙结构推覆分析结果表明，双连梁模型的梁两端较早出现塑性铰，而且塑性铰数量更多，出铰更加充分，耗能及延性优于单连梁模型。[关键词] 多连梁;等效计算方法;抗震性能分析中图分类号：TU318 文献标识码：A 文章编号：1002-848X(2013)S1-0640-03Calculating method and seismic performance analysis of multiple wall-beamsJiao Ke, Zhao Yunlong, Wu Wenyong(The Institute of Architecture Design & Research of Guangdong Province, Guangzhou 510010,China)Abstract: Shearing area and bending stiffness equivalent simulation methods about multiple wall-beams that are commonly used on structure design are introduced. Shearing area equivalence show great deviation in multiple wall-beams calculation. Bending stiffness equivalence obtains relatively reasonable result. The multiple wall-beams equivalent formula that can directly use to discount the bending stiffness is deduced in this paper. The pushover analysis results of a coupled shear wall indicate that the plastic hinges of beam ends appeared earlier and more in double beams structure, and its energy dissipation and ductility is better than single beam structure.Keywords: multiple wall-beams; equivalent calculating method; seismic performance analysis
