(1 北京市建筑设计研究院有限公司， 北京 100045； 2 广州容柏生建筑结构设计事务所， 广州 510170)

［摘要］重庆大悦城属于大型商业综合体，项目场地东北高西南低，最大高差约60m，中央区域存在深度达20~30m且不足5年回填土的特点，针对基础稳定性采用整体建模协同分析的手段进行了分析研究。裙房属于连体结构，南北区域以三道连廊相接，采用有限元软件对裙房的地震作用及温度应力进行计算分析；中部通廊（Tube）为超长结构，对Tube进行了温度应力分析，针对端部大悬挑进行了抗震分析及防连续倒塌分析。本项目塔楼及裙房均为超限结构，采用性能化设计手段及非线性时程辅助分析，对结构进行了细致、全面的分析，分析结果可满足预设的性能目标要求。 

［关键词］重庆大悦城；基础稳定性；连体结构；超长结构；性能化设计；弹塑性时程分析 

中图分类号：TU318 文献标识码：A文章编号：1002-848X(2021)19-0037-05

 Structural design mainpoints of Chongqing Joy City  

LI  Boyu1,  WANG  Ran1,  SHU  Weinong1,  ZHANG  Lianhe1,  SUI  Xiao2,  FENG  Huijun1, QU  Yuan1,  HAO  Shumin1 

(1 Beijing Institute of Architectural Design, Beijing 100045， China；2 RBS Architectural Engineering Design Associates, Guangzhou 510170， China) 

Abstract: Chongqing Joy City is a large commercial complex. The site of this project is high in the northeast and low in the southwest, with the maximum height difference of about 60m. In the central area of the site, the backfill last less than 5 years and has a depth of 20~30m. The stability of the foundation was analyzed and studied by means of integrated modeling and collaborative analysis. The podium is a conjoined structure, and the north and south areas are connected by three corridors. The finite element software was used to analyze the seismic action and temperature stress of the podium. The middle corridor (Tube) is an ultra-long structure. The temperature stress analysis of the Tube was carried out, and the seismic analysis and progressive collapse analyses were carried out for the large cantilever at the end. The towers and podiums of this project are all over-limit structures. The performance-based design method and nonlinear time history auxiliary analysis were used to analyze the structure detailly and comprehensively, the analysis results can meet the preset performance requirements. 

Keywords:Chongqing Joy City； stability of foundation； conjoined structure； super-long structure； performance-based design； elastic-plastic dynamic analysis

作者简介：李博宇，硕士，一级注册结构工程师，高级工程师，Email: liboyu@biad.com.cn。