基于Push-over分析的钢-混凝土组合框架抗震性能研究  

PUSH-OVER ANALYSIS ON THE STEEL-CONCRETE COMPOSITE FRAME STRUCTURE WITH THREE STORIES

作　　者：谭丽芳[1] 蒋丽忠[1] 董立冬[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075

出　　处：《动力学与控制学报》2008年第2期169-172,共4页Journal of Dynamics and Control

基　　金：国家自然科学基金(50438020;50778177);湖南省杰出青年基金资助项目(07JJ1009)~~

摘　　要：通过建立push-over分析方法中的等效单自由度体系,分析得到钢-混凝土组合框架结构的等延性需求谱.利用有限元软件对组合框架进行非线性静力推覆分析,基于位移模式把多自由度体系转换为等效单自由度体系,建立其等效加速度与等效位移曲线.按现行抗震规范建立组合框架结构谱加速度与谱位移曲线,从而对该类结构进行抗震评估.用非线性动力时程分析方法对本文提出方法进行了比较,验证了该方法的可靠性.Based on the establishment of equivalent single degree of system in the push-over method, the equal ductility demanding spectrum of a steel-concrete composite fame structure was obtained, and the composite fame was analyzed by using inelastic static push-over method of ANSYS software. The several degrees of freedom system were converted to single degree of system based on displacement mode, the equivalent acceleration-equivalent displacement curve was built, and the spectrum acceleration-spectrum displacement curve of the composite fame structure was established according to the current seismic code. So the seismic performance of the structure was evaluated. The reliability of the push-over method was validated by comparing with the inelastic dynamic timehistory analysis.

关 键 词：静力弹塑性分析 非线性动力时程分析 钢-混组合框架 

分 类 号：TU398.9[建筑科学—结构工程]