摘要
工程主体结构高188.5m,采用钢筋混凝土框架-核心筒结构,属于超限高层建筑,存在扭转不规则和楼板局部不连续。设计中采用基于性能的抗震设计方法,抗震性能目标为C级。采用SATWE和ETABS两种软件进行小震弹性、中震弹性和中震不屈服分析,并采用SAP2000进行罕遇地震作用下的动力弹塑性分析。计算结果表明,结构的层间位移角、扭转位移比等各项控制性指标均满足规范的相关要求,采取的抗震加强措施是有效的,结构整体及各构件的抗震性能均可达到预期的抗震性能目标。
The project is a reinforced concrete frame-core tube building with a height of 188.5 meters, which exceeds the design limit. The plan is irregular taking into account torsion and the slab is not continuous in local parts. The PBD （performance-based design） method was used and the performance goal was set as level C. The building was analyzed with SATWE and ETABS under minor earthquake and moderate earthquake respectively. And the dynamic nonlinear analysis of the building under major earthquake was carried out by SAP2000. The results show that the inter storey drifts and torsional angle ratio, as well as other indicators can satisfy the code requirements. The adopted strengthening measures are effective. So the global structural performance and the performance of each element can achieve the respective expected goals.
出处
《建筑结构》
CSCD
北大核心
2012年第6期91-94,72,共5页
Building Structure
关键词
弹性分析
弹塑性分析
基于性能的抗震设计
elastic analysis
elasto-plastic analysis
performance-based seismic design
