高强超薄壁冷弯型钢低层住宅抗震设计方法  

Seismic design method of low-rise high-strength cold-formed thin-walled steel framing buildings

作　　者：沈祖炎[1] 刘飞[1] 李元齐[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《建筑结构学报》2013年第1期44-51,共8页Journal of Building Structures

基　　金：国家自然科学基金面上项目(50878168)

摘　　要：结合国内外已完成的冷弯薄壁型钢龙骨式复合墙体静力和动力试验研究成果,提出了冷弯薄壁型钢复合墙体的骨架曲线和恢复力模型。基于已经完成的屈服强度550 MPa高强超薄壁冷弯型钢足尺结构模型振动台试验,对结构在多遇和罕遇地震作用下的抗震分析方法进行了对比。结果表明:多遇地震作用下结构的弹性分析可采用底部剪力法、反应谱法和弹性时程分析法;罕遇地震作用下结构分析可采用静力非线性(推覆)分析和非线性时程分析法。依据GB 50011—2010《建筑抗震设计规范》的基本规定,提出了低层冷弯薄壁型钢龙骨体系结构的抗震设计实用方法建议。Based on static and dynamic experimental investigations on light-gauge composite framing walls,the suitable skeleton curve model,as well as the hysteretic curve model of the composite walls for seismic analysis was discussed and suggested at first in this paper.Then,seismic analysis methods for light-gauge composite framing building system were discussed in comparison with shaking table test of a full-scale model of high-strength cold-formed thin-walled steel framing building with yield strength over 550 MPa,including the equivalent base shear method,the response spectrum method and the elastic time-history analysis method for frequently occurred earthquake action design,and the nonlinear pushover method and the elasto-plastic time-history analysis method for rare earthquake action design.Meanwhile,the results based on different seismic analysis methods were compared and verified by the shaking table test data of the full-scale model.Finally,considering the basic requirements in current seismic design codes in China,some suggestions on seismic design methods for low-rise cold-formed thin-walled steel framing buildings were given.

关 键 词：高强冷弯薄壁型钢结构 龙骨式复合墙体 滞回特性 抗震设计 

分 类 号：TU392.104[建筑科学—结构工程]