摘要
钢框架结构中,不同的屈曲约束支撑布置方式对结构的耗能减震性能有较大影响.采用有限元软件SAP2000,对5跨8层钢框架结构模型进行弹塑性动力分析,对比不同的屈曲约束支撑布置方案下的结构动力特性与动力响应.结果表明,支撑布置在中间跨要优于边跨;支撑沿长度方向上通长布置,能够充分利用屈曲约束支撑在罕遇地震作用下的耗能减震性能.
Different disposition ways of buckling-restrained braces （BRB） in steel frame structures have a greater influence on anti-seismic performances with energy dissipation. Based on a 5-span 8-1ayer planar steel frame structure model, its numerical elastic-plastic dynamic analysis was performed with finite element software SAP 2000. Dynamic characteristics and dynamic response of the structure with different disposition ways of BRB were compared with each other. The result showed that disposition of BRB at middle span was better than side span and it would be better to set BRB throughout longitudinal direction to increase the lateral stiffness of the structure, and it could make full use of energy dissipation capacity of BRB during severe earthquake.
出处
《兰州理工大学学报》
CAS
北大核心
2014年第3期126-129,共4页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(50678078
51068019)
关键词
钢框架
屈曲约束支撑
布置方式
抗震性能
弹塑性动力分析
steel frame structure
buekling-restrained braces
anti-seismic performance
elastic-plastic dynamic analysis
