（深圳市建筑设计研究总院有限公司， 深圳 518031）

［摘要］东莞环球财富大厦项目结构高度160.5m，建筑平面为双矩形组合，相应的塔楼可选择分缝的双塔方案和不分缝的单塔方案，结构可采用钢筋混凝土框架-核心筒体系。项目同时存在高度超限、组合平面、扭转不规则、弱连接楼盖和外围框架梁不封闭等结构不规则项。结构设计时，对分缝的双塔方案和不分缝的单塔方案进行了对比分析。分析结果表明，不分缝的单塔方案在控制结构扭转不规则性、减小剪力墙拉应力以及满足建筑使用功能等方面优于分缝的双塔方案。项目最终选择不分缝的单塔方案，采用的是钢筋混凝土框架双核心筒结构体系。采用性能化抗震设计方法，对结构在常规荷载作用下的反应进行了分析，针对不分缝的单塔方案中弱连接楼盖和外框架梁不封闭对结构的影响进行了论证。分析结果表明，结构能够满足设定的性能目标，在分析的基础上结合结构特征提出了针对性的加强措施。

［关键词］东莞环球财富大厦； 高层建筑；  组合平面；  弱连接楼盖；  性能化设计

中图分类号：TU375， TU381文献标识码：A文章编号：1002-848X(2020)21-0001-05

Tower scheme comparison and seismic design of a high-rise building with double rectangular combined plane

WANG Qiwen, GUO Shengjun, LI Jinghua, TANG Xi

（Shenzhen General Institute of Architectural Design and Research Co., Ltd.， Shenzhen 518031，  China）

Abstract:Dong Guan World Fortune Plaza project is a high-rise building of 160.5m high with double rectangular combined plane. Accordingly, there are two alternative tower schemes: two towers with seismic joints and a single tower without seismic joints. The tower structure can adopt reinforced concrete frame-corewall structural system. There are irregularities in the project such as out-of-code height limit, combined plane, reverse irregularities, weakly-connected floor slab and discontinuous outer-frame girders. In the structural design, two tower schemes of two towers with seismic joints and a single tower without seismic joints were compared and analyzed. The analysis results show that the single tower scheme without joints is superior to the other scheme in controlling structural torsional irregularity, reducing the tensile stress of shear wall and meeting the building function. Finally, the scheme of single tower scheme without joints was selected, and the reinforced concrete frame double corewall structural system was adopted. The performance-based seismic design method was used to analyze the response of the structure under the action of conventional loads. The influences of the weakly-connected floor and discontinuous outer-frame girders on the structure of the scheme of the single tower without joints were demonstrated. The analysis results show that the structure can meet the set performance targets. Based on the analysis, targeted strengthening measures were proposed combined with the structural characteristics.

Keywords:Dong Guan World Fortune Plaza; high-rise building; combined plane; weakly-connected floor slab; performance-based design

作者简介：王启文，博士，教授级高级工程师，Email：470468786@qq.com； 通信作者：唐熙，硕士，工程师，Email：tangxi1991@126.com。