双层大跨空间曲面预应力混凝土壳体结构建造技术研究  

Study on Construction Technique of Double-layer Large-span Spatial Curved Prestressed Concrete Shell Structures

作　　者：龙莉波 马跃强 李卫红 LONG libo;MA Yueqiang;LI Weihong(Shanghai Construction No.2(Group)Co.,Ltd.,Shanghai 200080,China;Shanghai Engineering Research Center of Top-Down Method in Construction Engineering,Shanghai 200080,China)

机构地区：[1]上海建工二建集团有限公司,上海200080 [2]上海建筑工程逆作法工程技术研究中心,上海200080

出　　处：《建筑施工》2024年第12期1988-1992,共5页Building Construction

基　　金：上海建工集团股份有限公司项目资助课题(23JCSF-05)。

摘　　要：壳体结构在建筑平面设计和形体塑造上给予了建筑师巨大的创作空间,随着数字设计技术快速发展,以自由曲面为基本结构形态的大跨度壳体结构层出不穷,但均采用单层异形壳的设计形式。以上海奉贤在水一方项目为背景,对全球首例双层大跨空间曲面预应力混凝土壳体结构的建造技术开展了研究。为了解决建造过程中涉及的复杂结构体系施工路线制定、复杂形状混凝土支模浇筑、大跨度空间曲线预应力精准施工等难题,研发形成了施工全过程数值模拟技术、复杂形态曲面混凝土模板支架体系、超长双曲面混凝土预应力施工技术等成果,有效确保了工程的顺利实施,可为今后类似工程提供参考。Shell structures offer architects extensive creative freedom in planar design and form shaping.With the rapid development of digital design techniques,large-span shell structures based on freeform surfaces have increasingly emerged,though they typically adopt single-layer special-shaped shells.It is focused on the world's first double-layer largespan spatial curved prestressed concrete shell structure,exemplified by the Fengxian Zaishui Yifang project in Shanghai.Solutions are developed to address challenges in the construction process,including the formulation of construction routes for complex structural systems,the casting of complex-shaped concrete formwork,and the precise execution of largespan spatial prestressing.Techniques such as numerical simulation of the full construction process,complex-form curved concrete formwork support systems,and super-long hyperboloid concrete prestressing methods are developed to ensure successful project implementation,providing valuable references for similar projects in the future.

关 键 词：双层大跨空间曲面 大跨度壳体结构 数值模拟 混凝土模板支架体系 预应力施工 

分 类 号：TU757[建筑科学—建筑技术科学]