Mechanical Performance Analysis of Cable-Girder Anchorage Zone Structure Based on Hybrid Element Method

Abstract

The finite element model of a partially cable-stayed bridge with a central single cable plane corrugated steel web composite box girder is established by the hybrid element method combined with the solid finite element model and spatial grid model, and the mechanical properties of cable-girder anchorage zone structure under cable forces are calculated and analyzed in this paper. The refined model of the steel anchor box structure was established, and the stress distribution of each component of the steel anchor box under cable force was calculated and analyzed. By calculating the resultant force of the cable direction in the junction area of each component, the ratio of the cable force transmitted by each component of the steel anchor box is obtained. The results show that the stress distribution of each component of the steel anchor box is uniform under the action of cable force, and the stress level of the shear plate and the steel guide beam is higher. It is an important component to transfer the cable force and should be the focus and research object in the cable beam anchorage structure.