Multi-stage buffer anti-collision pier

Abstract

The invention belongs to the technical field of bridge protection devices, and particularly relates to a multi-stage buffer anti-collision pier. The multi-stage buffer anti-collision pier comprises apier body and an anti-collision body surrounding the pier body; the anti-collision body comprises a first-stage protection cylinder, a second-stage protection cylinder and a third-stage protection cylinder, wherein the first-stage protection cylinder surrounding the pier body, and the first-stage protection cylinder comprises the outer cylinder body and the inner cylinder body which are sequentially arranged from outside to inside; the outer wall of the second-stage protection cylinder abuts against the inner wall of the inner cylinder body of the first-stage protection cylinder; and the outerwall of the third-stage protection cylinder abuts against the inner wall of the inner cylinder body of the first-stage protection cylinder, a guide mechanism is arranged on the outer wall of the third-stage protection cylinder, and after the first-stage protection cylinder is impacted, the guide mechanism can drive the first-stage protection cylinder to rotate, so that an impacted object deviates. After a vehicle collides with the anti-collision pier, the first-stage protection cylinder absorbs a small part of energy firstly, then the remaining energy is completely absorbed by the second-stage protection cylinder, or the second-stage protection cylinder absorbs a part of energy, the remaining energy is discharged by the third-stage protection cylinder, and through multi-stage energy absorption, it can be effectively guaranteed that the pier body is not damaged, and damage to the vehicle can be reduced.

Description

technical field [0001] The invention belongs to the technical field of bridge protection devices, in particular to a multi-stage buffer anti-collision pier. Background technique [0002] At present, the current situation of road traffic safety in our country is worrisome. Due to the increase in traffic volume, the contradiction between cars and bridges (especially overpass bridges) has become more and more prominent. Accidents of cars hitting bridge piers often occur, and in severe cases, bridge piers will collapse. The car crash caused irreparable loss of life and property. The reason is that the direct impact of the car on the bridge pier is a rigid impact, and this process lacks energy dissipation, so the damage is extremely great. [0003] The anti-collision pier is a device used to protect the bridge pier, and the purpose of impact buffering is achieved through the protective pier. The Chinese invention patent with the publication number CN108474186B discloses a plast...

AI Technical Summary

Problems solved by technology

Although the above-mentioned guardrail can play a good protective effect, it cannot rebound after being hit and cannot be used again, resulting in increased maintenance costs

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