Research on Construction Technology of Steel Structure Tie Rod Arch Bridge with Less Support

Abstract

In order to explore the installation method of the steel box tie-rod arch bridge across the canal, in order to meet the requirements of rapid installation under the condition of near the existing diagonal bridge. Based on qingshuihe Bridge of G50 Shanghai-Chongqing Expressway, the installation technology of steel box pole arch bridge is studied by combining theoretical analysis and field practice. This paper analyzes the construction problem of Qingshuihe Bridge and proposes an construction method of small supports and large sections. The oblique asymmetric beam arch is designed to avoid the influence on the channel headband. The installation process of bridge deck system is optimized, the bending moment of steel beam is effectively reduced, and the temporary span of beam beam installation is improved. The finite element analysis shows that the beam, arch ribs and other components are in good stress condition according to the asymmetric deformation of the boom force, and ensure the smooth installation of the beam and bridge deck.