西南交通大学学报2018，Vol.53Issue(2)：234-243,10.DOI:10.3969/j.issn.0258-2724.2018.02.003
基于能量的网壳结构协调抗震性能分析
Energy-Based Analysis of Anti-Seismic Performance of Latticed Shell in Coordination
摘要
Abstract
An analytical numerical model was rebuilt to reveal changes in local stress state in a singlelayer reticulated shell under earthquake,as well as the relationship between the changes and structural failure loads.The numerical model was rebuilt based on the strain energy from nonlinear response history analyses at increasing levels of ground motion intensity to systematically study the redistribution of seismic internal force in elements in the single-layer reticulated shell by using the strain energy parameter.The results showed that elements in a single-layer shell can bear seismic loads harmoniously and steadily in the normal working state.However,harmonious and steady characteristics were not observed in the failure state.Therefore,different stress states can be distinguished by checking the structural coordinative working capability.In addition,the strain energy in the lower parts of the single-layer reticulated shell was larger than that in other parts such as in the radial members under horizontal ground motion,the maximum value was observed in the fifth hoop,which was 13 times larger than that in the first hoop.The strain energy in the upper parts of the single-layer reticulated shell was larger than that in other parts such as in the radial members under 3D ground motion;the maximum value was observed in the second hoop,which was 15 times than that in the sixth hoop.关键词
能量/变形能/网壳结构/地震作用/协调性Key words
energy/strain energy/shell structures/seismic loads/coordination分类
建筑与水利引用本文复制引用
张明,周广春,张克跃,贾宏宇,李兰平,张德义..基于能量的网壳结构协调抗震性能分析[J].西南交通大学学报,2018,53(2):234-243,10.基金项目
国家自然科学基金资助项目(51608452) （51608452）
中央高校基本科研业务费专项资金科技创新项目(10101B10096040) （10101B10096040）
国家重点研发计划资助项目(2016YFC0802205) （2016YFC0802205）
西南交通大学峨眉校区高层次人才队伍建设科研支撑项目(10101X10096070). （10101X10096070）
