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深圳某项目为由两栋超高层住宅塔楼及底部商业裙房构成的大底盘双塔结构,两栋塔楼整体平面分别成L形和凹形。该项目除结构高度超限外,尚存在扭转不规则、凹凸不规则、尺寸突变、竖向构件不连续等不规则项。采用等效弹性方法对结构关键构件进行了中震不屈服和中震弹性验算,采用ABAQUS程序对结构进行了罕遇地震弹塑性动力时程分析,对结构整体性能状态和关键构件的塑性开展进行了研究。结果表明,项目各关键构件满足所设定的抗震性能目标,结构具有良好的抗震性能。
A project in Shenzhen is a large-chassis twin-tower structure consisting of two super-tall residential towers and a bottom commercial podium. The two towers are L-shaped and concave-shaped, respectively. In addition to the structural height of the project beyond the limit, there are still irregular irregularities, uneven irregularities, size mutations, vertical components such as discontinuous irregularities. Equivalent elastic method was used to check the structure’s key components without yielding and mid-elasticity. The ABAQUS program was used to analyze the elastic-plastic dynamic time-history of the rare earthquakes. The overall performance of the structure and the plasticity of the key components were carried out Study. The results show that the key components of the project meet the set of seismic performance objectives, the structure has good seismic performance.