关键词: 冲击地压, 吸能构件, 吸能特性

Abstract: This paper establishes a finite element model of the hollow structure of the thin-walled circular tube for the energy-absorbing components in the new spiral anti-impact device. The simulation results of the crushing performance of the hollowed-out thin-walled tube are verified by experiments. According to the model parameters verified by the experiment, the influence of the number and length of the vertical bars of the thin-walled circular tube structure on the axial static load crushing buckling deformation, the initial peak force, the displacement at the elastic stage, the average supporting force, and the suction of the thin-walled circular tube vertical bar structure are studied. The influence of the mean square deviation of energy and reaction force. According to the research rules and the actual working conditions of the anti-scouring column, the thin-walled vertical bar components are designed and tested, which provides the basis for the subsequent field shock pressure test. Studies have shown that the induced structure makes the deformation of the component more stable without changing the material, thickness and cross-sectional shape of the thin-walled tube; for the thin-walled tube vertical bar structure, as the number of vertical bars increases and the length of the vertical bars increases, the initial peak force, In the elastic stage, the displacement decreases, the energy absorption and the average support reaction force decrease, and the mean square error of the support reaction force decreases.