摘要
通过对计入和不计入楼梯的18个框架结构模型的分析对比,研究地震作用下楼梯对于框架结构整体性能和受力性能的影响。对于在整体结构中起着斜撑作用的楼梯的受力情况进行分析,并进行有限元分析。对于计入楼梯的框架结构模型采用弹塑性时程分析,了解结构屈服机制。通过计算分析比较,提出一种将楼梯与整体结构脱离的设计建议。
A total of 18 structure models,with and without staircases,are analyzed and compared.The staircase effect on the earthquake-resistance performance of frame structures is studied.The internal forces of the staircase members,which act as inclined strut in structure,are calculated.The stress of the staircase members are analyzed using finite element method.The elasto-plastic dynamical response analysis using the time history analysis method is conducted for the frame structures with staircases to determine the structure yielding mechanism.It is suggested that staircase should be isolated from the main structure in design.
出处
《土木工程学报》
EI
CSCD
北大核心
2010年第10期53-62,共10页
China Civil Engineering Journal
基金
国家科技支撑计划课题(2009BAJ28B01)
关键词
现浇楼梯
框架结构
抗震性能
设计建议
in-situ cast staircase
frame structure
earthquake-resistance performance
design suggestion
