Numerical simulation and mechanical analysis of square corrugated steel pipe gallery with different top angel

To investigate the load and stress characteristics of the underground square arch gallery, a numerical model was proposed. Equivalent stress, lateral displacement and vertical displacement of the structure of different angles were discussed, with the increase of filling height, and the appropriate section angle was selected according to the variation rules of the stress. The results show that the maximum Mises equivalent stress is lower when the top Angle is 50° than that of the other two top angles. The maximum transverse displacement is the smallest when the pipe top Angle is 50°, and the structure has a better ability to resist the transverse displacement.