防灾减灾工程学报2017，Vol.37Issue(1)：54-61,8.DOI:10.13409/j.cnki.jdpme.2017.01.008
板式楼梯连接方式对RC框架结构的抗震性能影响
Research on RC Frame Structure Seismic Performance with Different Connecting Methods of Plate Stairs
摘要
Abstract
By using the finite element software SAP2000,five kinds of static pushover models have been established to study the influence on the seismic performance of frame by analyzing structural performance point,inter-story displacement angle,stiffness degradation,and yield mechanism,which include the model containing stairs or not,strengthening the frame's corner columns in stair,using the sliding connection to stair board,and adding ladder columns.The analysis results are as follows.Whether strengthening corner columns in stair or using sliding connections to stair board can increase the ductility of the structure,by contrast,the model with sliding connection not only has greater ductility but also has the most significant influence on structural performance point;Moreover,from the result of structural stiffness degradation,such connections can keep the structural lateral stiffness better.When it comes to the yielding mechanism,in spite of the enhancing for some structural members,the model using sliding connections turns out to be ideal;In addition,the staircases with resistance connections are severely dam aged,and adding ladder columns causes havoc on ladder columns,which may leads to the whole stair's collapsing.关键词
RC框架结构/板式楼梯/抗式与放式连接/有限元分析/抗震性能Key words
RC frame structure/plate stair/resistance and sliding connection/finite element analysis/seismic performance分类
建筑与水利引用本文复制引用
段连蕊,张望喜,刘精巾,刘长洋..板式楼梯连接方式对RC框架结构的抗震性能影响[J].防灾减灾工程学报,2017,37(1):54-61,8.基金项目
国家自然科学基金项目(51578228,51208190,51338004)资助 （51578228,51208190,51338004）
