Rigid-frame bridges are widely used in engineering due to their good integrity and reasonable pier and beam consolidation force performance. In this study, the energy variational method is introduced into the solution of shear hysteresis coefficient of Rigid-Frame Bridge, by analyzing the strain energy of each part of Rigid-Frame Bridge under the action of load, in order to calculate the shear hysteresis coefficient of Rigid-Frame Bridge, and then analyze the force performance of Rigid-Frame Bridge. Based on the ANSYS program and the force analysis method, a finite element simulation model of Rigid-Frame Bridge is constructed. The results of the study show that when all lanes and sidewalks of Rigid-Frame Bridge are loaded, the maximum bending positive stresses in the top and bottom plates of the J1 section at the critical node are -21.42 MPa and -24.81 MPa, respectively, and the maximum shear hysteresis coefficients of the top and bottom plates of the steel bridge in the J2 section are 1.50 and 8.01, respectively. In addition, the maximum shear hysteresis coefficients of the top plates of J1 and J2 sections show a gradual decreasing trend when the tilt of the web plate of Rigid-Frame Bridge is changed from 90° to 60° and 45°, so it can be considered to increase the tilt of the web plate of Rigid-Frame Bridge to achieve the optimization of the structural design and safety of Rigid-Frame Bridge. The research results of this paper can provide scientific basis and technical guidance for the formulation of relevant specifications and engineering design of RigidFrame Bridges, which can help optimize the structure of this type of bridges and have good social and economic benefits.
