Research On Construction Technology Of Cantilevering Casting Construction Of RC Arch Bridge

When Reinforced concrete arch bridge main arch uses hanging basket cantilever construction method, the main arch ring section forming at a time, so it has advantages of simple process, short duration, so as to avoid the prefabricated arch ribs cast-in-situ joints caused by poor structural integrity problem of weak. The reinforced concrete arch bridge in construction stage has high wind resistance and lateral stability, low maintenance costs, durability, good integrity. Therefore foreign early in the nineteen sixties is already using this method, but the domestic on the construction method of research and practice are in the early stages.This paper relys on a project of Mupengte bridge, research Construction technology of Cantilevering Casting Construction of RC Arch Bridge. The main contents are as follows:1) this paper summarized the main construction method of large span arch bridge, and discusses the method and its application scope.2) summarizes the existing cable force calculation method, compares their advantages and disadvantages. Introduced the ANS YS optimization module, and the use of optimization tools.3) discusses the cantilever hanging basket arch bridge and tower design, and verifying the correctness and stability through the calculation of the hanging basket design.4) based on the ANSYS APDL language, compiled reinforced concrete cantilever casting construction method of cable force optimization program. Compared with the recorded in the tower, hanging basket with no impact on the result, we also compared the ANSYS of different variables of optimization of cable force optimization result influence. Finally put forward some decrease the construction stage arch stress method.