摘要
以某Y形钢管桁架通廊为研究对象,利用有限元软件MIDAS Gen建立结构计算模型.根据目标反应谱,选取2组天然地震波和1组人工地震波,对Y形钢管桁架通廊在罕遇地震作用下进行三向地震波输入的弹塑性动力时程分析,研究结构的变形和塑性发展程度.结果表明,在罕遇地震作用下,通廊主要构件基本保持弹性,变形满足规范要求,结构能达到预定的抗震性能目标,具有良好的抗震能力.
The elasto-plasticity of Y-shape traverse with steel pipe trusses was studied. MIDAS Gen was used to establish the elasto-plastic finite element model. The seismic wave input motion included 2 sets of natural waves and 1 set of artificial waves by means of target response spectrum selection,elasto-plastic time-historical analysis of the integral structures subjected to three-dimensional rare earthquakes was conducted,and responses of the deformation and plasticity status were also studied. The results show that the key component of traverse was elastic under rare earthquake and deformation met the require- ments of specifications,indicating that the design of the Y-shape traverse with steel pipe trusses achieved the objective earthquake resistance performance and the anti-seismic behavior was good.
出处
《吉首大学学报（自然科学版）》
CAS
2017年第1期40-44,共5页
Journal of Jishou University(Natural Sciences Edition)
基金
湖南省教育厅科学研究项目(14C0212)
吉首大学校级科研项目(15JD007)
关键词
Y形钢管桁架通廊
弹塑性
塑性铰
抗震性能
Y-shape traverse with steel pipe trusses
elasto-plastic
plastic hinges
earthquake resistance performance
