大跨度钢桁拱施工阶段空间受力特性分析

Space mechanical characteristics analysis of long-span steel trussed arch bridgeat construction stage

根据大跨度钢桁拱的施工特点和施工工艺,对朝天门大桥进行施工阶段静动力分析,探讨了大跨度钢桁架拱桥施工阶段的空间静动力特性,验证了拱上吊机悬臂拼装法施工的可行性.

According to construction characteristics and technology of long-span steel trussed arch bridge,construction static and dynamic calculation combining with Chaotian Gate Bridge are carried out.In this paper,space static and dynamic characteristic of large-span steel trussed arch bridge at construction stage are discussed,and the cantilever assembly method with crane on the arch proves to be feasible.