摘要
本文主要研究高层钢框架结构的地震失效模式及其控制方法。首先,给出了高层钢结构的地震失效模式的分析方法;其次,提出了根据结构的失效路径来加强构件对高层钢结构的地震失效模式进行控制的方法;然后,提出了结构整体抗震能力的分析方法以及分别相应于设计能力和屈服能力的能力储备分析方法;最后,通过对一座15层的钢框架结构进行典型地震动下的极限时程分析和极限pushover分析,得到高层钢框架结构的失效模式和整体抗震能力以及相应于最弱失效模式的能力储备,并验证了本文中地震失效模式控制方法的有效性。本文的研究表明,高层钢结构的地震失效模式控制可以采用结构失效路径修正(薄弱构件加强)来实现。
This paper mainly studies seismic failure modes and their control of tall steel buildings. Firstly, the a- nalysis methods of seismic failure modes of steel tall buildings are given. Secondly, a method for seismic failure mode control of tall steel buildings is presented by strengthening the members according to the structural failure path. Thirdly, the analysis methods of structural integral seismic capacity and capacity storage respectively corre- sponding to design capacity and yielding capacity are presented. Finally, the failure modes, integral seismic capac- ity and capacity storage corresponding to weakest failure mode are obtained by employing a 15-story steel frame building for ultimate time-history analysis under typical earthquake ground motions and ultimate pushover analysis. And the method for seismic failure mode control of tall steel buildings in this paper is proved practicable. The re- search in the paper will provide an effective method for seismic failure mode control of tall steel buildings by chan- ging the structural failure path.
出处
《地震工程与工程振动》
CSCD
北大核心
2010年第1期22-28,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家重点基础研究发展计划(973计划)项目课题资助(2007CB714202
2007CB714205)
关键词
高层钢结构
失效准则
地震失效模式控制
失效路径
整体抗震能力
steel tall buildings
failure criterion
seismic failure mode control
failure path
integral seismic capacity
