竖向地震作用下大悬挑钢桁架结构的弹塑性动力分析  

Elastoplastic Dynamic Analysis of Large Cantilevered Steel Truss Structure Under Vertical Earthquake

作　　者：林秋怡[1] Lin Qiu-yi(College of Architectural Engineering,Chuzhou Polytechnic Chuzhou 239000,Anhui,China)

机构地区：[1]滁州职业技术学院建筑工程学院,安徽滁州239000

出　　处：《兰州文理学院学报（自然科学版）》2020年第5期63-69,73,共8页Journal of Lanzhou University of Arts and Science(Natural Sciences)

基　　金：2019年度安徽高校优秀拔尖人才培育项目(重点青年人才):竖向地震作用下大悬挑结构的抗震性能分析(gxyqZD2019129)。

摘　　要：采用SAP2000有限元软件对大悬挑钢桁架结构的弹塑性动力学进行分析.结果表明,唐山波竖向地震作用下,V字形布局的屈曲约束结构可以获得最优的减震效果.在罕遇地震波地震作用下,采用屈曲约束支撑结构相较普通钢支撑结构具有更优的减震作用,罕遇地震波地震作用下人字形设计的屈曲约束支撑耗能能力会更加显著.The elasto-plastic dynamics of large cantilever steel truss structure is analyzed by SAP2000 finite element software.The results show that under the vertical earthquake action of Tangshan wave,the V-shaped buckling restrained structure can obtain the optimal damping effect,and under the rare earthquake wave earthquake,the buckling restrained brace structure has better damping effect than the ordinary steel braced structure,furthermore,the energy dissipation capacity of the herringbone shaped buckling restrained brace design under the rare earthquake wave earthquake is more significant.

关 键 词：竖向地震 钢桁架结构 弹塑性动力 屈曲约束支撑 耗能 

分 类 号：TU391[建筑科学—结构工程] TU352.11