摘要
本文利用大型结构分析软件ETABS设计了4种包含和不包含楼梯的钢筋混凝土框架计算模型,分别采用底部剪力法、反应谱法和时程分析法对各模型进行了弹性阶段地震反应特性对比计算分析。结果显示:楼梯参与结构整体计算后,结构出现抗侧刚度明显增加、结构扭转振动显著、梯间框架柱剪力突变等现象;建议结构设计时采用包含楼梯的层间结构计算模型(M-4),使用振型分解反应谱法进行结构抗震分析计算。
Four computer models of conerete frame with staircase were made and the seismic-performance of the models in elastic-phase was calcaulated by adopting base shear method,spectrum analysis and time history analysis based on ETABS.The results show that including staircase into models will change the seismic performance of frame structure significantly.The paper proposes that the computer model-4 and the response spectrum analysis should be used firstly in the seismic design of conerete frame with staircase.
出处
《地震工程与工程振动》
CSCD
北大核心
2009年第6期136-142,共7页
Earthquake Engineering and Engineering Dynamics
基金
福建省科技厅重点项目(2007Y0025)
关键词
ETABS
框架结构
楼梯
抗震性能
ETABS
frame structure
staircaase
seismic performance
