摘要
结合武汉市国际贸易中心大厦弹塑性地震反应分析,介绍了一种在现阶段实用又便于应用的多(高)层结构在罕遇地震作用下的弹塑性时程分析方法.通过引入子结构的概念,采用单串或多串集中质量模型,分析了结构在罕遇地震作用下的动力反应,获得了相应的时程与反应包络图,从而对结构的抗震性能作出评价,对抗震设计提出建议.
By introducing the analysis of Wuhan ITC edifice, a practical elasto-plastic time-history analysis method of a multi-story structure under severe earthquake excitations was presented . Using substructure concept, a multi-story structure could be regarded as one or divided into several substructures, which are connected by flexible or rigid floor. To each substructure, a multi-story concentrated mass model is adopted. Using program NTAMS, including TAMS & NSAMS, we could easily obtain the structural responses such as envelops of story shear force, story drift etc. and time histories of any appointed positions. Therefore, evaluation of seismic performance for a structure under severe earthquake could be carried out. Analytical results can show the effectiveness of NTAMS for structural design.
出处
《建筑结构》
CSCD
北大核心
1996年第11期18-23,共6页
Building Structure
关键词
弹性分析
塑性分析
地震反应
子结构
抗震性
elasto-plastic
time-history analysis
substructures
severe earthquake excitation
