中间加劲C型钢构件压弯滞回性能非线性模拟  

Nonlinear simulation for hysteretic behavior of C steel members with intermediate stiffeners under constant compression and cyclic bending

作　　者：董军[1] 陆曦 

机构地区：[1]南京工业大学新型钢结构研究所,江苏南京210009 [2]中国凯盛国际工程有限公司,江苏南京210042

出　　处：《地震工程与工程振动》2008年第6期142-147,共6页Earthquake Engineering and Engineering Dynamics

基　　金：江苏省自然科学基金项目(BK2005116)

摘　　要：为克服普通薄壁C型钢构件在宽厚比较大时滞回性能差的缺点,首先对具有相同宽厚比的C型钢和加劲C型钢压弯构件的滞回性能进行了比较,结果表明加劲可有效改善此类构件的滞回性能;然后对具有中间加劲的C型钢构件在压弯循环荷载下的滞回性能、变形情况以及破坏模式进行了深入分析;研究了加劲设置对构件性能的影响,得出了合理的加劲布置方式;最后采用延性系数对中间加劲薄壁C型钢构件的抗震性能进行了评价,给出了设计建议。The hysteretic behavior of common C steel members with large width-to-thickness ratio is bad. In order to overcome the weakness, the hysteretic behavior of C steel members with and without intermediate stiffener were compared at first. The results show that the intermediate stiffener is effective to modify the hysteretic behavior of thin-wall C steel members. Then the hysteretie behavior, deformed shapes and the final failure modes of C steel members with intermediate stiffeners under constant compression and cyclic bending were carefully analyzed. Finally, the aseismatic behavior of the thin-wall C steel members with intermediate stiffeners were assessed by ductility coefficients, and some preliminarily suggestions for the aseismatic design of thin-wall steel members were put forward.

关 键 词：薄壁C型钢构件 中间加劲 滞回性能 宽厚比 延性系数 

分 类 号：TU392.1[建筑科学—结构工程]