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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 main structure of the project is 188.5m high. It adopts reinforced concrete frame-core tube structure and belongs to the overrun high-rise building with irregular torsion and partial discontinuity of the slab. The design uses a performance-based seismic design approach with a C-class seismic goal. SATWE and ETABS softwares are used for the analysis of small earthquakes, medium earthquakes and moderate earthquakes, and the analysis of dynamic elasto-plasticity under the action of rare earthquakes using SAP2000. The calculation results show that all the control indexes such as interlayer displacement angle and torsional displacement ratio of the structure meet the relevant requirements of the code. The seismic strengthening measures taken are effective. The seismic performance of the whole structure and each component can achieve the expected earthquake resistance Performance goals.