Simulation Analysis of Long-Span Single-Tower Hybrid Beam Cable-Stayed Bridge

The bridge in Foshan is a single-tower hybrid beam cable-stayed bridge with a main span of 268m and a tower height of 151m. The arrangement of the main bridge spans is (65 + 75 + 268) meters. Using the finite element simulation analysis method, the deformation, stress, and cable forces of the main bridge structure under permanent, variable, and combined loads were calculated. The results indicate that the deformations, stresses, and cable forces of the structure in the permanent load condition are within a reasonable range, satisfying the requirements of construction control. Under combined loads, the compressive stress on the upper surface of the concrete main beam near the main tower is relatively high. It is recommended to reinforce the reinforcement or take structural measures based on the direction of compressive stress in that area. The deformations, stresses, and cable forces at other locations are within a reasonable range and generally meet the design requirements.