About the author:

China Railway Construction Group Co., Ltd., Beijing 100040, China

Abstract:

The construction of large⁃span steel roofs poses technical challenges such as high qualityimprovement, large structural span, and multiple suspension points. Taking the steel roof lifting projectof Building 1 of Zhengzhou Zhongyuan Science and Technology City Science and Technology InnovationPark as the background, and considering the goals of construction quality and safety, a comprehensivelifting construction plan is adopted for large⁃span steel roofs. The specific process of lifting, thearrangement of lifting points and lifting brackets are elaborated in detail. Simulate the steel roof andlifting bracket using structural analysis software SAP2000, and obtain the stress and displacement of thesteel roof during the lifting process, pre installation section connection process, and unloading process.At the same time, real⁃time monitoring is carried out on the weak positions and overall weak nodes of thesteel roof structure during the lifting process to ensure the safety and controllability of the entireconstruction process.