(1 上海大学土木系，上海市应用数学与力学研究所，上海 200072；2 同济大学土木工程学院，同济大学土木工程防灾国家重点实验室，上海 200092)

［摘要］根据框架-支撑结构的受力特点，将其分解成纯框架体系和纯支撑体系，这两部分相互协同工作。分别从纯框架体系和纯支撑体系的层间位移求解方法入手，通过这两部分的变形协调推导得到框架-支撑结构体系在水平荷载作用下的层间位移计算公式。并将此简化求解方法的计算结果与有限元法的计算结果进行了对比，结果表明，所用简化算法准确有效，计算步骤清晰明了。

［关键词］框架-支撑结构；层间位移；简化算法

中图分类号：TU391文献标识码：A文章编号：1002-848X(2011)08-0072-03

Simplified calculation method of interstorey displacement of braced frame structures under horizontal loads

Hu Baolin¹, Li Guoqiang²(1 Department of Civil Engineering, Shanghai University & Shanghai Institute of Applied Mathematics and Mechanics, Shanghai 200072, China; 2 School of Civil Engineering & State Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract:Based on the loading characteristic of braced frame structures, the braced frame structures can be divided into  pure frame and pure support system, and the two parts can work collaboratively.The interstorey displacement formula of braced frame structures under horizontal load can be derived by deformation coordination, starting with solution of interstorey displacement with the pure frame system and support system. The comparing analysis of two calculation results between simplified calculation method and finite element method has been carried out. The result shows that the simplified calculation method is exact and valid, and the calculation step is much clear.

Keywords:braced frame structure; interstorey displacement; simplified calculation method

* 上海市博士后资助项目(10R21413000)。

作者简介：胡宝琳，博士，Email:hubaolintz@163.com。

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