（1 华建集团华东建筑设计研究总院， 上海 200002; 2 同济大学土木工程学院， 上海 200092）

［摘要］国家会展中心（上海）配套的能源中心立面改造工程，是首届中国进口博览会提升工程的一部分,其两座蓄水罐外侧需设置幕墙，因此需要设置为幕墙立面提供的支承结构。提出定量评价支承结构空间作用的两个指标：基于倾覆力矩和基于顶点位移的空间作用指标。经方案比选分析，采用支撑棋盘式布置的钢框架支撑结构能较好地发挥空间作用。此外，对幕墙支承结构的后置基础方案，提出一种解决新老基础抗倾覆作用的抱箍节点。经有限元分析论证，新老基础共同工作受力合理，避免了大范围基础施工对周边环境的影响。

［关键词］幕墙支承结构； 空间作用指标； 钢框架支撑结构； 新老基础抱箍节点； 构件装配化

中图分类号：TU391文献标识码：A文章编号：1002-848X(2020)18-0069-07

Design of curtain wall supporting structure for large water storage tank

BAO Lianjin1,2, ZHAO Xuelian1,2, WANG Mingxing1

(1 Arcplus Group PLC East China Architectural Design & Research Institute, Shanghai 200002, China;2 College of Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract:The facade reconstruction project of National Exhibition and Convention Center（Shanghai）supporting energy center was a part of the promotion projects of the first China International Import Expo. Curtain walls were required outside the two water storage tanks, so it was necessary to provide the supporting structure for the fa-ade of the curtain wall. Two indexes were proposed to quantitatively evaluate the spatial action of the supporting structure: spatial action index based on overturning moment and top displacement. Through comparison and analysis of schemes, the braced steel frame structure could play a better spatial role. In addition, in order to make the new foundation scheme of the supporting structure realize, a hoop joint was proposed to solve the anti-overturning effect between new and old foundation. Through the finite element analysis, it was proved that the new and old foundation worked together well and the stress was reasonable, which avoided the influence of large-scale foundation construction on the surrounding environment.

Keywords:curtain wall supporting structure; spatial function index; braced steel frame structure; new and old foundation hoop joint; component assembly

作者简介：包联进，硕士，教授级高级工程师，Email:lianjin_bao@ecadi.com； 通信作者：赵雪莲，硕士，高级工程师，Email:xuelian_zhao@ecadi.com。