摘要
设计了12组41种二重钢管防屈曲耗能支撑试件,应用有限元软件ABAQUS对其进行了有限元分析,研究了径厚比、约束比、长细比和边界条件对支撑性能的影响。分析结果表明:二重钢管防屈曲耗能支撑的径厚比取值不大于24、约束比的取值不小于3时,支撑的滞回曲线饱满、稳定;当支撑的长细比增加时,可以通过提高约束比来避免支撑发生整体屈曲;支撑的边界条件宜设计成固接。
Twelve groups and forty-one kinds of double-steel tube buckling-restrained braces were designed.Numerical analysis was carried out by using the finite element software ABAQUS to study the performance of the braces and the influences of radius-thickness ratio,restraint ratio,boundary condition and slenderness ratio.The results indicate that：the double-steel tube buckling-restrained braces have full and stable hysteretic curve when their radius-thickness ratios are not higher than twenty-four and their restraint ratios are not lower than three.When the slenderness ratios increase,the increase of restraint ratio may prevent the buckling of braces as a whole.The boundary condition of double-steel tube buckling-restrained brace is suggested to be clamped.
出处
《地震工程与工程振动》
CSCD
北大核心
2011年第6期96-101,共6页
Earthquake Engineering and Engineering Dynamics
基金
广东省自然科学基金团队项目(8351009101000001)
广东省自然科学基金项目(06021581)
广东省科技计划项目(2007B030401010)
减震控制与结构安全省部共建重点实验室开放基金项目
广州市教育系统创新学术团队项目(穗教科[2009]11号)
关键词
二重钢管防屈曲耗能支撑
滞回性能
有限元分析
double-steel tube buckling-restrained brace
hysteretic behavior
finite element analysis
