设置加强层的钢框架-核心筒结构的动力弹塑性时程分析  

The dynamic time-history analysis of steel frame-core tube structure with strengthened layer

作　　者：蔡勇[1] 罗应松[1] 陆铁坚[1] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2014年第3期1-8,共8页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51078354);湖南省自然科学基金重点资助项目(10JJ2034)

摘　　要：基于地震作用下水平加强层对钢框架-核心筒结构的影响,对一个34层未设置加强层与设置1道、2道和3道加强层的钢框架-核心筒结构进行三向弹塑性动力时程分析。通过计算,得到4种结构在地震动主方向7度、8度和9度罕遇地震作用下的楼层位移反应及塑性铰分布情况,综合分析设置不同数目加强层对结构抗震性能的影响。研究结果表明:设置加强层可以提高结构的刚度,设置2道加强层的抗震效果优于设置1道和3道加强层的抗震效果。In order to study the effect of horizontal strengthened layer on the steel frame-core tube structure under earthquake action,a 34 layer steel frame-core tube built without strengthen layer and with one,two,three reinforcing strengthened layers was selected to evaluate the dynamic elastic-plastic time-history effect.Through calculation,the floor displacement response and the distribution of plastic hinges of four kinds of structures under seismic principal direction of 7 degrees,8 degrees,9 degrees of rare earthquake were derived. The effect of aseismic performance on structures with different numbers of strengthened layers has been comprehensively analyzed. The results show that setting the strengthening layer can improve the stiffness of the structure,and the seismic effect of two strengthened layers is better than that with one or three reinforcing layers.

关 键 词：加强层 钢框架-核心筒 动力弹塑性时程分析 

分 类 号：TU375[建筑科学—结构工程] TU973.31