基于积分均值法的钢框架减震体系复位性分析  

The Re-centering Behavior Analysis on Steel Frame Based on the Integralaverage Quantity Method

作　　者：陈小荣[1] 雷劲松[1] 罗景润[2] 钟卫洲[2] 郭历伦[2] 谢曹阳[2] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《西南科技大学学报》2009年第1期1-6,共6页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金项目(50848008)

摘　　要：结构复位性通常以其残余位移来体现。提出了基于位移响应积分均值法求残余位移的公式,并进行了相关数理统计分析;通过无支撑和偏心支撑钢框架及新型楔块—支撑钢框架地震作用下的数值仿真分析了3种钢框架的复位性。结果表明:楔块—支撑钢框架的复位性优于无支撑和偏心支撑钢框架;基于位移响应积分均值法与重启动分阶段计算的残余位移基本一致,表明该方法具有良好的精度和稳定性,能够用于实际钢框架结构的复位性分析。The re-centering behavior is embodied by residual displacement. Aimed at the investigation about re-centering behavior of steel frame structure is less presently, this paper proposed the residual displacement formula by the integral average quantity method based on displacement respond, and performanced an analysis of related mathematical statistics. Meanwhile, it analyzed the re-centering behavior of no-braced and eccentrically braced steel frame and new-style steel frame with wedge-bracing by the seismic simulation method. The analytical results indicate the wedge-braced steel frame has a best re-centering behavior in the three frames; the caculated residual displacement has good accuracy and stability by the integral average quantity method based on displacement respond, and it can he used to the analysis of re-centering behavior in the actual steel frame structure.

关 键 词：积分均值法 钢框架结构 复位性 残余位移 

分 类 号：TU391[建筑科学—结构工程]