薄楼板上履带吊行走吊装重型钢梁施工技术

Construction Technology for Hoisting Heavy Steel Beam by Crawler Crane Walking on Thin Floor

为解决在超大跨度、超高厂房的非首层重型钢结构屋面吊装中,常规在地面吊装的施工工艺存在的吊装高度不足、中间区域无法吊装的问题,对施工技术进行了研究和优化。通过采用履带式起重机在薄楼板面上自行走进行吊装,大幅度降低了作业场地的限制,增加了可吊装作业的范围。对履带起重机的吊运、行走、施吊过程,卸荷方式,以及钢梁的水平运输及安装过程进行了研究和改进,节约了施工成本,缩短了工期,可为类似钢结构安装工程提供参考。

In order to solve the problems of insufficient lifting height and inability to hoist in the middle area in the conventional construction process of hoisting on the ground during the hoisting of the non-first floor heavy steel structure roof of the super-span and super-high workshop,the construction technology was studied and optimized.By using crawler crane to walk on the thin floor for hoisting,the limitation of the operation site is greatly reduced,and the range of hoisting operations is increased.The hoisting,walking,hoisting process,unloading mode,and horizontal transportation and installation process of steel beam by crawler crane are studied and improved,which can save construction cost and shorten construction period,and provide reference for similar steel structure installation projects.