Abstract
Cable-stayed bridges have their unique advantages, which are suitable for urban bridges with higher requirements for landscape improvement and upgrading. In the process of urban bridge renovation with landscape demand, the advantages of cable-stayed bridge in shape and structure are combined to provide more excellent scheme for urban bridge renovation. In this paper, the existing continuous girder bridge is reconstructed by adding cables. The internal force and displacement before and after structural renovation are calculated by Midas civil 2019. It can be seen that the internal force of the structure can be significantly improved by increasing the cables, and the maximum and minimum bending stress can be reduced by 40% and 20% respectively. Comparing and analyzing different retrofitting methods, the layout of cables has the most obvious effect on the maximum stress of the whole structure.
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