Research on Key Technologies for Construction of Large Span Aerial Steel Structures

Abstract

This study investigates the steel structure hoisting and installation challenges beneath a long-span elevated floor in a commercial complex project in Changning District Shanghai. Through comprehensive analysis, we optimized hoisting point layouts and material storage areas. The integrated implementation of tower cranes and mobile cranes, combined with the erection of temporary supports and phased load release protocols, enabled precise positioning of large-span steel structures. This methodology effectively resolved complications including restricted hoisting operations in complex elevated spaces, stringent installation accuracy requirements, and confined construction site conditions. Furthermore, the steel structure installation procedures and technical specifications were concluded. It can provide valuable references for analogous steel construction projects.