Combined anti-collision guardrail system suitable for urban bridge with sidewalk

Abstract

The invention discloses a combined type anti-collision guardrail system suitable for an urban bridge provided with a sidewalk. The combined type anti-collision guardrail system comprises a roadway guardrail and a sidewalk guardrail. The roadway guardrail comprises a cross rod, a stand column and a roadway guardrail base. A sidewalk guardrail base is arranged at the bottom of the sidewalk guardrail, a plurality of sleeper beams are arranged between the sidewalk guardrail base and the roadway guardrail base at intervals, and a plurality of sidewalk plates are arranged above the sleeper beams; the middle rigidity of the sidewalk slab is greater than that of two sides; the rigidity of the sidewalk guardrail base is smaller than that of the sleeper beam; a sidewalk system (sidewalk plates, sleeper beams and sidewalk guardrail bases) in an urban bridge participates in a roadway anti-collision guardrail system to form a combined anti-collision system, collision energy is shared together, the step-by-step buffering effect is achieved, on the premise of ensuring that the anti-collision safety performance is met, the structure in a traditional guardrail is optimized, and the anti-collision safety performance is improved. Therefore, the light and attractive appearance is realized, and the landscape requirements of urban bridges are better met.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a combined anti-collision guardrail system suitable for urban bridges with sidewalks. Background technique [0002] With the rapid development of my country's road construction and transportation industry, traffic safety is facing severe challenges. As a safety facility, bridge anti-collision guardrails play an important role in protecting bridge traffic safety. Most of the existing urban anti-collision guardrails are made of cast-in-place concrete or steel structures. Under the requirements of their corresponding anti-collision grades, the size design of the guardrails may not consider the requirements of coordination with other structures on the bridge deck, and its landscape is relatively low. Low, relatively uncoordinated. At the same time, the existing urban anti-collision guardrail design does not better combine the rest of the bridge structure to participate in the colli...

AI Technical Summary

Problems solved by technology

Most of the existing urban anti-collision guardrails are made of cast-in-place concrete or steel structures. Under the requirements of the corresponding anti-collision level, the size design of the guardrail may not consider the coordination requirements with other structures on the bridge deck, and its landscape is relatively poor. low, relatively uncoordinated

At the same time, the existing design of urban anti-collision barriers does not better combine the rest of the bridge structure to participate in collision avoidance, nor does it play the role of the rest of the bridge structure more reasonably and effectively, so the ability to buffer and absorb the collision energy generated by vehicles is weak

Images