Research on the Retrofit of Spatial Roof Based on Fixed Support and Connection Technology of a Metal Roof System

Abstract

To solve the problem of insufficient bearing capacityor unable to normal use of space roof caused by function change, structural damage, and termination of service, the test evaluation, concept design, numerical simulation, and the application of engineering methods were used to innovatively put forward the demolition reconstruction scheme of changing the “shed roof structure” to “double slope roof structure”, develop the steel truss demolition method of “fragment dismantling at high altitude and manual dismantling on the ground”.Meanwhile, a fixed support and connection technology of metal roofing system was invented to solve a series of problems, such as large original roof structure windward area, weak ability to resist the typhoon bad weather, and poor ability of the original metal roofing to resist wind pressure, and easy to crack, and then the safe, economic and efficient demolition and reconstruction of the existing space roof structure under the premise of keeping the original body structure in good condition, providing good technical support for the reconstruction of existing space roofs in China, and helping the upgradingof existing urban-industrial areas and urban renewal.