胡青松1，  潘东辉2
(1迈进建筑工程设计有限公司，深圳518033；2东莞理工学院，东莞523808)

[摘要] 无锡恒隆广场塔楼属于特别不规则的复杂的型钢混凝土框架．核心筒结构，结构存在开洞面积超过50%的平面不规则，首5层层高较大带来的竖向刚度和承载力不规则，结构还属于带加强层的复杂结构。针对不规则结构采用了相应的设计对策，并对该塔楼结构进行罕遇地震下的动力弹塑性分析，计算结果表明层间位移角符合规范限值，构件状况符合预设性能的要求，结构表现出受限制的弹塑性状态，并满足预设的抗震性能要求。
[关键词] 超限；超高层；罕遇地震；动力弹塑性；性能
中图分类号：TU398.7    文献标识码：A    文章编号：1002 -848X( 2012) S2 -0065 -07

Second seismic system analysis of Wuxi Henglong Square tower under the rare earthquake
Hu Qingsongl, Pan Donghuj2
(1 Meinhardt Group, Shenzhen 518033, China; 2 Dongguan University of Technology, Dongguan 523808, China)

Abstract: The tower of Wuxi Henglong Square, with SRC frame-tube structural system have several characteristics, including big openings, vertical stiffness irregularity and shear capacity irregularity, beyond code linuts. Rigid outrigger for lateral drift control lead to the complex structural system of the seismic code. Seismic enhancement strategies are chosen for the irregularity and time history analysis are performed with the rare seismic input. The analysis shows that story drift is below code linut and the lateral displacements of the inelastic story display a restricted yielding mechanism. The behavior of the irregular complex structure meets specified performance.
Keywords: beyond code limit; high-rise building; rare earthquake; performance