Flexible energy dissipation vehicle-collision-preventing structure of tunnel portal and mounting method of flexible energy dissipation vehicle-collision-preventing structure

Abstract

The invention relates to a flexible energy dissipation vehicle-collision-preventing structure of a tunnel portal and a mounting method of the flexible energy dissipation vehicle-collision-preventing structure. The flexible energy dissipation vehicle-collision-preventing structure comprises a collision-preventing body energy dissipation assembly and a roller guiding assembly which are assembled front and back. The collision-preventing body energy dissipation assembly internally comprises a vertical stand column and collision-preventing bodies around the stand column. The roller guiding assemblycomprises a vertical rotating shaft and a roller outside the rotating shaft. According to the flexible energy dissipation vehicle-collision-preventing structure of the tunnel portal and the mountingmethod of the flexible energy dissipation vehicle-collision-preventing structure, a vehicle is guided into a tunnel through guiding and intercepting ways to avoid collision of the vehicle and the holewall, and the effects that great energy is dissipated, and impact force is reduced are achieved; when side face impact of the vehicle occurs, collision-preventing facilities of the tunnel portal reduce energy exchanging through guiding and energy dissipation to reduce the impact force and guide the vehicle into the tunnel; and when front face impact occurs, guiding and energy dissipation can be achieved to reduce the impact force, so that damage is reduced, and a safety guarantee is provided for the tunnel portal.

Description

technical field [0001] The invention belongs to the technical field of traffic safety protection, and in particular relates to a flexible energy-consuming anti-vehicle collision structure at a tunnel entrance and an installation method thereof. Background technique [0002] At present, highway anti-collision facilities are mainly concentrated on roadsides, central dividers, and bridge piers. There is little research on anti-collision facilities for tunnel entrances. Some tunnel entrances use traditional guardrails. Therefore, once an accident occurs, there will be heavy casualties. Contents of the invention [0003] The object of the present invention is to provide a flexible energy-consuming anti-collision structure at the entrance of the tunnel and its installation method, which guides and intercepts vehicles into the tunnel to avoid collision between the vehicle and the cave wall, and has the advantages of dissipating relatively large energy and reducing the impact force...

AI Technical Summary

Problems solved by technology

[0002] At present, highway anti-collision facilities are mainly concentrated on roadsides, central dividers, and bridge piers. There is little research on anti-collision facilities for tunnel entrances. Some tunnel entrances use traditional guardrails. Therefore, once an accident occurs, heavy casualties will occur.

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