Construction method of corrugated guardrail above highway retaining wall

Abstract

The invention discloses a construction method of a corrugated guardrail above a highway retaining wall. The method comprises the steps that the retaining wall is built along the highway axis, and foundation pit slots with back openings are reserved; expansion bolts are arranged on a highway concrete road shoulder on the front sides of the walls of the foundation pit slots, steel reinforcement cages are discharged and bound and sink into the foundation pit slots, and stand columns and the steel reinforcement cages are welded and positioned; formworks are arranged on the back surfaces of the walls of the foundation pit slots, and the formworks and the expansion bolts are connected through iron wire tie pieces; concrete is poured and vibrated, and large impact force on the formworks is avoided during the period; after the concrete is cured, the formworks are disassembled, cross beams are spliced and fixed to the stand columns through connecting bolts, and the cross beams form a smooth line shape matched with a highway curve; end beams are installed at openings of the corrugated guardrail and anchored, corrugated steel guardrail plates are installed through the cross beams, the line shape of the corrugated steel guardrail plates is matched with the highway curve, and construction of the corrugated guardrail is completed. According to the method, the construction cost can be effectively reduced by adopting drawing construction of a foundation, and the construction period is shortened, so that the method is suitable for high-speed development of highway construction.

Description

technical field [0001] The invention relates to a construction method of a corrugated guardrail above a highway retaining wall. Background technique [0002] The corrugated guardrail is a continuous structure spliced ​​with corrugated steel guardrails and supported by columns. It uses the deformation of the soil foundation, columns, and beams to absorb collision energy and force out-of-control vehicles to change direction and return to the normal driving direction. Prevent the vehicle from rushing out of the road to protect the vehicle and passengers and reduce the loss caused by the accident. The corrugated guardrail is both rigid and soft, has a strong ability to absorb collision energy and avoid collisions, has a good line of sight induction function, can coordinate with the road alignment, and has a beautiful and harmonious appearance. Therefore, the corrugated guardrail is an important barrier for road safety, and its construction quality needs to be strictly controlle...

AI Technical Summary

Problems solved by technology

This construction method has a long period of time, high material and labor costs, and cannot adapt to the current rapid development of highway construction.

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