大跨度预应力张弦桁架的吊装

Hoisting of prestressed long-span truss string structures

广州国际会议展览中心采用了大跨度预应力张弦桁架结构.由于张弦桁架跨度大、重心高、侧向刚度较差等特点,吊装过程应考虑多种因素的影响.本文对张弦桁架吊装过程中的几个问题进行了介绍与分析,为大跨度钢结构工程安装提供有益经验与建议.

The prestressed spatial truss string structure is adopted in the roof structure of the exhibition hall at Guangzhou International Convention & Exhibition Center.Due to the long span,high center of gravity and weak lateral rigidness of the truss string structure,the influence of some parameters should be considered during the hoisting process.The paper describes the hoisting process of the prestressed truss string structure and discusses some problems met during the hoisting process,which provides some experience for hoisting of long-span steel structures.