Structural Optimization Analysis on a New Type of Cable-Girder Anchorage Structure

Abstract

For long-span cable-stayed bridges, the cable-girder anchorage structure is a key component in designing. The function of the cable-girder anchorage structure is to transfer the load between cables and the main girder. A new type of cable girder anchorage structure was designed, which is suitable for railway cable-stayed bridge, and applied to Yongjiang Bridge. Based on the simulation analysis and model test of this new structure, which is called steel anchor box with double-end fixed, the optimization design of this new anchor box is carried out in order to solve the problem of stress concentration. This is to simplify the structure and reduce the weld seams. Through the finite element simulation, two kinds of optimization design schemes for this structure have been studied, and been proved to be reasonable.