Finite element analysis on through tied-arch bridge with inclined arch rib during construction stage

Abstract

In order to verify the rationality and safety of the through tied-arch bridge with inclined steel box arch ribs, the mechanical properties of the bridge are investigated. By establishing a finite element model, its strength, stiffness, and stability are analyzed, and the safety and reliability of the structure can be verified. Combined with the forward-backward analysis method, the suspender cable force of the model is optimized. Compared with the results of the design cable force and the measured cable force in the bridge completion stage, the consistency of the suspender cable force is commented. The results show that the requirements of the strength, stiffness and stability of the structure are met in the construction stage, which proves the rationality of the structural design and the safety in the construction stage. The suspender cable force after model optimization is in good agreement with the design value and the measured value. It provides a reference for the construction and application of such types of tied-arch bridges.