Fabricated single-slope type bridge anti-collision guardrail

Abstract

The invention discloses an assembly type single-slope bridge anti-collision guardrail which is installed on a cantilever edge arranged on the edge of a bridge road surface and comprises a buffer block and at least one guardrail profile arranged in the longitudinal direction of a bridge, and a buffer groove formed in the longitudinal direction of the bridge is formed in the side face, facing the bridge road surface, of the guardrail profile. The buffer block is embedded in the buffer groove and can move relative to the buffer groove in the longitudinal direction of the bridge. The assembled single-slope type bridge anti-collision guardrail has the advantages of being simple, practical, high in guidance quality, good in buffering and energy absorbing effect, high in protection performance on passengers and a bridge and the like.

Description

technical field [0001] The invention relates to the technical field of guardrail structures, in particular to an assembled single-slope bridge anti-collision guardrail. Background technique [0002] In recent years, accidents of vehicles colliding with guardrails have occurred frequently, and the scientific anti-collision design of guardrails has attracted more and more attention. Rigid guardrails are widely used in traditional bridge structures, and single-slope concrete guardrails are one of the main representatives. However, this kind of guardrail is strong enough, but its guiding ability is average, and its energy absorption and buffering effect is poor. And because of its high rigidity, there is almost no deformation in the collision with the vehicle. When the speed of the vehicle is too high or the collision angle is too large, a large impact force will be generated, which poses a great threat to the safety of the occupants. The additional bending moment also brings d...

AI Technical Summary

Problems solved by technology

Rigid guardrails are widely used in traditional bridge structures, and single-slope concrete guardrails are one of the main representatives. However, this kind of guardrail is strong enough, but its guiding performance is average, and its energy absorption and buffering effect is poor.

And because of its high rigidity, there is almost no deformation in the collision with the vehicle. When the speed of the vehicle is too high or the collision angle is too large, a large impact force will be generated, which poses a great threat to the safety of the occupants. The additional bending moment also brings damage to the bridge structure

In addition, because the concrete rigid guardrail is mostly formed by integral pouring on the bridge cantilever, there is great inconvenience in later maintenance and replacement

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