强震下大跨度三心圆钢管拱桁架结构体系动力弹塑性失效分析  

Dynamic Elastoplastic Failure Analysis of Long-span Three-heart Circular Steel Tubular Arch Truss Structure System under Strong Earthquake

作　　者：王敏[1] 王俊刚 WANG Min;WANG Jun-gang(Sichuan Engineering Technical College,Deyang 618000,China;Sichuan Hongji Original Architectural Design Co.,Ltd.,Deyang 618000,China)

机构地区：[1]四川工程职业技术学院,德阳618000 [2]四川宏基原创建筑设计有限公司,德阳618000

出　　处：《价值工程》2019年第30期189-190,共2页Value Engineering

摘　　要：本文运用SAP2000结构分析软件,对某钢管拱桁架结构体系(跨度58m,矢夸比0.38,三心圆)的整体结构模型进行了在EL-cenro地震作用下的弹塑性增量动力响应分析,研究中采用集中塑性铰理论考虑材料的非线性并同时计入结构的几何非线性影响。研究结果表明:该钢管拱桁架破坏过程中,材料塑性发展充分,属强度破坏,且承载力相对较高,抗震能力突出。This paper uses SAP2000 structural analysis software to analyze the elastoplastic incremental dynamic response of a steel tubular arch truss structure system(span 58m,sagitta than 0.38,three-hearted circle)under EL-cenro earthquake.In the study,the concentrated plastic hinge theory is used to consider the nonlinearity of the material and simultaneously account for the geometric nonlinear effects of the structure.The research results show that during the failure process of the steel tubular arch truss,the plasticity of the material is fully developed,which is a kind of strength damage,and the bearing capacity is relatively high,and the seismic resistance is outstanding.

关 键 词：强震 弹塑性时程分析 钢管拱桁架 

分 类 号：TU27[建筑科学—建筑设计及理论]