大型机场航站楼带大悬挑复杂钢屋盖施工工序研究及工程应用OA

The steel roof of a large airport terminal generally consists of a large-span roof truss and a large cantilever truss on the landside.The construction process affects not only the safety of the steel roof during the construction and service stages but also affects the duration and cost during construction.In this study,three construction processes were summarized by investigating the structural form,installation and unloading sequence of the large airport terminals.By using a simplified analytical model of the airport terminal,a recommended process scheme was ultimately presented by conducting a comprehensive evaluation of the analytical results such as member stress,structural deformation,and support reactions,as well as other influence factors such as duration and cost during construction.The findings in this study successfully guided the steel roof construction of the Hohhot Shengle International Airport and the T5 terminal of Xi'an Xianyang International Airport.Furthermore,the accuracy of the analytical results obtained from the simplified model has been verified by health monitoring,which can serve as a reference for the construction of other large airport terminal projects in the future.