弦支穹顶结构预应力施加方法研究与工程应用  

Study on prestressing method of suspen-dome structure and its engineering application

作　　者：姚炜 涂冯俊 周春娟 董成 Liu Mingliang;Tu Fengjun;Zhou Chunjuan;Dong Cheng(Shaanxi Architecture Science Research Institute Co.Ltd,Xi'an 710082,China)

机构地区：[1]陕西建工集团股份有限公司,西安710003 [2]陕西省建筑科学研究院有限公司,西安710082

出　　处：《陕西建筑》2022年第1期109-113,共5页Shaanxi Architecture

摘　　要：当代中国经济飞速发展,对建造大跨度建筑提出了更高的要求,作为一种新型空间结构体系,弦支穹顶结构常作为大跨度公共建筑屋盖的结构形式。弦支穹顶结构一般由上部刚性的单层球面网壳和下部柔性的张拉整体体系组合而成。对于下部的索撑体系结构而言,张拉过程中力与形的控制是预应力施工的核心内容。本文依托于工程实例,研究了当前弦支穹顶结构三种主要的预应力施加方法,并结合工程实际应用中数值分析的结果,总结了三种张拉方法的优缺点,为以后弦支穹顶预应力施工提供有意义的参考资料。With the rapid development of China’s economy,the construction of large-span buildings has put forward higher requirements.As a new type of space structure system,suspen-dome structure is often used as the roof structure of large-span public buildings.Suspendome structures are generally composed of a rigid single-layer reticulated spherical shell and a flexible tensegrity system.For the lower cable-strut system,the control of force and shape in the process of tension is the core of prestressed construction.In this paper,three main prestressing methods for suspen-dome structures are studied based on practical engineering examples,and the advantages and disadvantages of the three methods are summarized based on the results of numerical analysis in practical engineering,it provides a meaningful reference for the future suspen-dome prestress construction.

关 键 词：弦支穹顶结构 工程实例 预应力张拉 工程应用 

分 类 号：TU394[建筑科学—结构工程]