Simulation analysis and structure optimization of steel structure climbing formwork with material properties used in the large angle leaning bridge tower

摘要

Steel structure climbing formwork has been widely used in bridge pier and bridge tower, etc. But the design of 30 degrees slope climbing formwork design is rarely involved. The climbing formwork which in the upper surface of leaning bridge tower is affected by concrete buoyancy and the downside is affected by concrete gravity. That cause insufficient stiffness，deformation of the template，non-uniform cross-section of the bridge and large angle deviation which have great harm to the bridge quality. This paper which combined the construction project of Huaibei Xiangwang Bridge establish the mode of climbing formwork, then, import the mode to the Workbench14.5 proceeding simulation analysis. Getting the stress and deformation of the climbing formwork, check the strength and stiffness. Then optimize the structure of climbing formwork to ensure the stiffness and control the deformation of the template. The stress of downside climbing formwork after optimization is uniform and maximum stress is reduced about 30%. This paper provide a reference to the design of the climbing formwork used in the large angle leaning bridge tower.