上海世博文化公园南片区双子山项目主体结构设计

引用文献：

刘宏欣李亚明贾水钟孙求知潘法超张朕磊. 上海世博文化公园南片区双子山项目主体结构设计[J]. 建筑结构，2023，48（01）：109-114.

LIU Hongxin LI Yaming JIA Shuizhong SUN Qiuzhi PAN Fachao ZHANG Zhenlei. Main structure design of Shuangzi mountain project in the south area of Shanghai World Expo Cultural Park[J]. Building Structure，2023,48（01）：109-114.

作者：刘宏欣李亚明贾水钟孙求知潘法超张朕磊

单位：上海建筑设计研究院有限公司上海建筑空间结构工程技术研究中心

摘要：上海世博文化公园南片区双子山项目为人造山形建筑，是位于城市敏感环境及软土地基上的国内规模巨大的仿自然山体之一，采用空腔堆山方法进行建造。综合考虑空腔内建筑功能区域划分、表皮仿自然山形特点以及预制装配要求等因素，结构划分为下部规则腔体结构和可方便进行山形塑造的上部表皮结构。结构采用框架-剪力墙结构体系，结合本项目特点并通过计算分析，其中框架部分的结构选型比较了预制钢筋混凝土结构、全钢结构和部分包覆钢-混凝土组合结构(简称PEC组合结构),得到PEC组合结构在整体刚度、节点连接及抗震性能等方面具有综合优势。表皮结构采用加密框架和现浇梁板体系，结合等高线坡度，表皮形成斜板加挡土墙的分仓设计。对比了采用考虑表皮效应的整体模型和仅考虑下部规则结构的计算模型的主要控制指标、动力特性及大震下的破坏形态等内容，并进行强度包络设计，提高了结构安全度。整体计算结果表明，结构体系选型合理，各计算指标均能满足规范要求。

关键词：山形建筑；部分包覆钢-混凝土组合结构；空腔造山；建筑工业化；

作者简介：刘宏欣，博士，正高级工程师，主要从事空间结构体系设计及研究、超高层建筑结构抗风抗震设计及振动控制等，Email:liuhx@aisa.com.cn。

基金：上海市科学技术委员会科研计划项目(21DZ1203002)；华东建筑集团股份有限公司课题(20-1类-0073-结)。

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Main structure design of Shuangzi mountain project in the south area of Shanghai World Expo Cultural Park

LIU Hongxin LI Yaming JIA Shuizhong SUN Qiuzhi PAN Fachao ZHANG Zhenlei

(Shanghai Institute of Architectural Design & Research Co., Ltd. Shanghai Engineering Research Center of Spatial Structures)

Abstract: The Shuangzi mountain project in the south area of Shanghai World Expo Cultural Park is a human made mountain-shaped building, which is one of huge scale imitating natural mountain located in sensitive urban environment and soft soil foundation in China. It is constructed using the cavity orogeny method. Factors such as the division of building functional areas in the cavity, the characteristics of the skin imitating the natural mountain shape, and the prefabricated assembly requirements were comprehensively considered, the structure is divided into the lower regular cavity structure and the upper skin structure which is convenient for mountain shaping. The structure is a frame-shear wall structure system. Combined with the characteristics of the project and through calculation and analysis, the structural selection of the frame part compares the precast reinforced concrete structure, steel structure and partially-encased composite composite structure(PEC composite structure), and the PEC composite structure has comprehensive advantages in overall stiffness, joint connection and seismic performance. The skin structure adopts the encrypted frame and the cast-in-place beam-slab system. Combined with the contour gradient, the split bin design of inclined plate and retaining wall formed on the skin. The overall model considering skin effect and the model envelope design considering only the lower regular structure were carried out for the structure. The main control indicators, dynamic characteristics and failure patterns under the rare earthquake were compared between the two calculation models, and the strength envelope design was carried out to improve the structural safety. The results show that the structural system is reasonably selected, and all calculation indicators can meet the requirements of the specification.

Keywords: mountain-shaped building; partially-encased composite composite structure; cavity orogeny; industrialization of construction

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