计算力学学报2016，Vol.33Issue(6)：846-850,5.DOI:10.7511/jslx201606007
全局性能水准与构件局部损伤状态相关性研究
The correlation study of global performance states and local component injury status
摘要
Abstract
T raditional maximum story drift is a global performance index ,the exceedance of certain global performance limit states does not give any information on how severely the local plastic hinges injured . This paper was based on energy balance principle ,the ratio of plastic energy dissipation to total energy of plastic hinges is cumulative plastic strain .Regard cumulative plastic strain as engineering requirement parameters w hich reflects local injury status .Assumed a series of cumulative plastic strain threshold , local component fragility curves can be established .Regard maximum drift as engineering requirement parameter which reflects global performance limit states .To establish fragility curves based on global performance limit states .A good correlation between global performance states and local component injury status when compared global and local fragility curves .The cumulative plastic strain threshold can be get from the degree of coincidence between these two kinds of fragility curves .There will be a mapping relationship between global performance limit states and local injury status .Vulnerability analysis based on the cumulative plastic strain is a more accurate vulnerability analysis method .关键词
结构易损性/塑性能量耗散/累积塑性应变/全局性能水准/局部损伤状态Key words
plastic energy dissipation/cumulative plastic strain/structure vulnerability/global perfor-mance limit states/local injury status分类
数理科学引用本文复制引用
张坤,吴子燕,蔡宗明..全局性能水准与构件局部损伤状态相关性研究[J].计算力学学报,2016,33(6):846-850,5.基金项目
国家自然科学基金（51278420）；西北工业大学研究生创意创新种子基金（Z2016094）资助项目． （）
