（广东省建筑设计研究院，广州 510370）

[摘要]  珠海横琴发展大厦采用带巨型转换桁架-钢框架-支撑筒结构，属于非常规结构体系。为平面及竖向不规则的超限复杂高层结构。采用MIDAS/GEN和ABAQUS两种有限元分析软件进行罕遇地震作用下动力弹塑性时程分析，验证其在大震作用下的抗震性能是否满足预定的抗震性能目标，寻找结构薄弱部位并提出相应的加强措施；同时，研究结构中关键构件的塑性损伤和屈服程度，并做出性能评价，指导结构设计。两软件计算结果表明，塑性铰的分布和结构塑性损伤较少，受力性能良好，弹塑性反应及破坏机制符合抗震概念设计要求，结构满足大震下的抗震性能设计目标。

[关键词]  超限高层；罕遇地震；动力弹塑性时程分析；塑性损伤

中图分类号：TU313.3               文献标识码：A             文章编号：

作者简介：张连飞，硕士，工程师，445337551@qq.com。

Dynamic elastic-plastic analysis of Zhuhai Hengqin Development Building

Zhang Lianfei，Ou Tong，Tan Jian， Xu Xin

(The Architecture Design and Research Institute of Guangdong Province，Guangzhou510370，China)

Abstract：The huge transfer truss-steel frame-bracing tube structure applied in the Zhuhai Hengqin development building is not a conventional structure in specification, but a complex high-rise Building beyond the code limits with irregularity in plane and vertical direction. MIDAS/GEN and ABAQUS are employed to conduct the dynamic elastic-plastic time history analysis under rare earthquake ，to verify if the requirement of objectives of performance-based seismic design was met, The weak parts of the structure were found out and corresponding strengthening measurements were also given. At the same time, the plastic damage and yielding status of the key members as well as the evaluation of the degree of the plastic damage were carried out，in order to guide the structure design. The results of the two finite element software show that, how little the plastic hinge distributes and how little plastic damage and good mechanical performance, the elastic-plastic response and failure mechanism conform to the structural anti-seismic concept design, the requirement of objectives of performance-based seismic design was met.

Keywords：complex high-rise Building；rare earthquake；dynamic elastic-plastic analysis；plastic damage

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