自复位支撑框架体系的抗震性能分析  

Seismic Performances Analysis of the Self-centering Braced Frame Systems

作　　者：何小辉 武振宇[2] 温四清 董卫国 

机构地区：[1]中信建筑设计研究总院,湖北武汉430000 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《工程抗震与加固改造》2014年第1期76-79,共4页Earthquake Resistant Engineering and Retrofitting

基　　金：国家科技支撑计划(2006BAJ01B02-01-04)

摘　　要：基于ANSYS有限元分析平台,开发了超弹性单轴本构模型,并用于模拟自复位支撑的力学行为。接着对比分析了自复位支撑框架与普通支撑框架的地震时程反应。分析结果表明:自复位支撑框架具有更好的抗震性能,可以更快地衰减地震反应,具有较小的震后残余变形,从而可以减少结构的震后修复难度和费用。因此,自复位支撑是适应基于性能抗震设计需要的一种新型防震减灾结构。Based on ANSYS FEA platform, the super-elastic uniaxial constitutive model is developed and used for modeling the mechanic behavior of the self-centering brace. Then, the comparative analysis between the self-centering braced frame and the ordinary braced frame under earthquake excitation has been done. The result shows that the self-centering braced frame has better seismic performance, decaying the seismic responses faster and keeping smaller post-earthquake residual deformations, thus can reduce the difficulty and cost of post-earthquake restoration. Therefore, the self-centering brace is a new type of earthquake disaster mitigation structure, complying with the need of the performance-based seismic design.

关 键 词：自复位支撑 ANSYS二次开发 本构模型 基于性能抗震设计 地震时程分析 

分 类 号：TU352.12[建筑科学—结构工程]