88.3 m钢桁架滑移方案选用条件及重点工艺介绍

THE SELECTION CONDITIONS AND CRITICAL TECHNOLOGY INTRODUCTIONS OF SLIP SCHEME OF 88.3 M STEEL TRUSS

针对我国城市大型钢结构屋盖项目工期紧张、场地紧张,多种专业需要同时施工的情况,可以采取滑移施工技术进行半封闭或者间歇性封闭进行处理,利用组装桁架时允许其他专业施工,滑移桁架时临时封闭场地的做法,从而解决大跨度中庭不必要完全封闭场地的问题。结合南宁国际会展中心改扩建及周边市政交通完善工程A地块施工经验对其展开了具体介绍。

For the limited construction period and sites in urban large steel structure roof projects in China,as well as the need of a variety of professional constructions at the same time,the sliding construction technique could be adopted for semi-closed or intermittently closed conducts,allowing other professional constructions when assembling truss and closing sites temporarily when slipping truss,so as to solve the problem of unnecessarily completely closed sited in large span atrium.This paper introduces this method in details with the combination of the construction experience of a block of Nanning International Convention and Exhibition Center and surrounding municipal traffic improvement project.