高层住宅钢管混凝土与钢梁框架-RC剪力墙结构静力弹塑性分析

Static elasto-plastic analysis of CFST frame-RC shear wall on high-rise residential buildings

钢-混凝土混合结构承载力高、结构延性好,在高层建筑中得到很好的运用。本文结合某高层住宅设计,采用钢管混凝土柱与钢梁框架-剪力墙体系,运用EPDA软件的PUSH程序对结构进行罕遇地震下静力弹塑性分析,以动力时程分析结果为基准,比较不同侧向力加载模式下结构的荷载位移曲线,研究性能点处各项参数指标,研究表明倒三角形加载模式精度较高。以倒三角形加载模式展开结构塑性发展全过程分析,找出结构可能存在的薄弱部位,给出工程设计建议。

The steel-concrete mixed structures with high bearing capacity and excellent seismic behavior have a wide range of applications in many high-rise buildings.In this paper,CFST and steel beam frame-shear walls structure is adopted,and the PUSH program of EPDA is used to carry out the static elastoplastic analysis of the structure under rare earthquake.Based on the results of dynamic time history analysis,the load displacement curves of structures under different lateral loading modes are compared and the various parameters of performance points are studied.The result shows that the inverse triangle loading mode has higher accuracy.The weak parts of the structure can be found out with result of he whole process of plastic development of the structure analysis under inverted triangle loading mode.Then engineering design suggestions are given.