摘要
罕遇地震作用下的建筑结构往往处于弹塑性工作状态,但结构每个构件的损伤程度不尽相同。为了评价不同构件的损伤情况,编制了框架结构杆系振动模型弹塑性时程分析程序,对框架结构在罕遇地震作用下的损伤进行了分析。利用累计塑性变形倍率、平均塑性变形倍率和累计塑性转角与最大塑性转角的比值"s"对结构的损伤进行了评价。同时对结构各个杆件消耗的塑性能、各个杆件的损伤比和剩余变形进行了分析。根据结构的损伤情况,对结构的设计提出建议,可供相关人员参考。
Frame structures will be in elasto-plastic situation under rare earthquake.But damage of each member is not equal.A programme for elasto-plastic time history analysis is made,which is used to comput the damage of frame structure under rare earthquake.Average plastic deformation rate;cumulative plastic deformation rate and the ratio of cumulative plastic rotation and maximum plastic rotation are used to evaluate the damage of the frame structure.Plastic energy,damage ratior and residual deformation of each membe are also studied.Some design suggestions are put forward,which might be referred to.
出处
《工程抗震与加固改造》
北大核心
2011年第2期22-27,15,共7页
Earthquake Resistant Engineering and Retrofitting
关键词
弹塑性时程分析
平均塑性变形倍率
累计塑性变形倍率
损伤比
剩余变形
elasto-plastic time history analysis
average plastic deformation rate
cumulative plastic deformation rate
damage ratio
residual deformation
