A lightweight assembled anti-collision fence assembly and an installation method thereof

Abstract

A lightweight assembled anti-collision guardrail assembly and an installation method thereof are disclosed. The lightweight assembled anti-collision guardrail assembly comprises prefabricated guardrails, a vertical bolt, a horizontal bolt, a steel bar and bridge flange panels, the bridge flange plate is provided with a vertical bolt hole and a horizontal bolt hole, the vertical bolt is installed at the bottom of the prefabricated guardrail, inserted into the vertical bolt hole, the horizontal bolt is inserted into a horizontal bolt hole through a prefabricated guardrail, and the prefabricatedguardrail is welded together after the prefabricated guardrail is just joined with the reinforcing bars of the bridge flange plate, and the prefabricated guardrail is prefabricated in segments, and the bottom part is formed into an inverted shape, and is sequentially installed on the bridge flange plate. The prefabricated guardrail is connected with the reinforcing bars of the bridge flange plate,and the reinforcing bars are arranged in a vertical bolt staggered manner. The invention provides a lightweight assembled anti-collision guardrail with good mechanical performance, strong anti-collision ability, durability, good toughness, light dead weight, short construction period and easy guarantee of construction quality.

Description

technical field [0001] The invention relates to the field of bridges, in particular to a light assembled anti-collision barrier assembly and an installation method. Background technique [0002] The anti-collision guardrail of the bridge is an important protective facility to ensure the safety of vehicles and the safety of surrounding personnel and property during the operation phase of the bridge. However, with the improvement of national road construction requirements, the problems of existing bridge anti-collision barriers have become increasingly prominent, mainly as follows: [0003] 1. At present, most of the anti-collision barriers used in bridge engineering are concrete anti-collision barriers and beam-column type anti-collision barriers. Concrete crash barriers are rigid guardrails with sufficient rigidity, but the structure is too simple and lacks innovation, and the ability to buffer and absorb vehicle kinetic energy is small. Beam-column crash barriers are semi...

AI Technical Summary

Problems solved by technology

Concrete crash barriers are rigid guardrails with sufficient rigidity, but the structure is too simple and lacks innovation. The ability to buffer and absorb vehicle kinetic energy is small, and it is easy to jump over the guardrail or cause inward rollover after collision with a vehicle

The beam-column type crash barrier is a semi-rigid guardrail composed of multiple parallel steel pipes. It looks complicated on the surface, but it is actually made of steel pipes. The structure is unstable and the cost is high, and the anti-collision level cannot meet the requirements.

These problems will cause traffic safety hazards

[0004] 2. Traditional concrete anti-collision guardrails are usually poured on site. This method is not only cumbersome and takes a long time to construct, but also the construction quality is difficult to guarantee. Often, cracks appear on the guardrail due to improper processing of formwork and splicing joints. Gap and grout leakage. At the same time, due to the old-fashioned concrete, the concrete water ratio is not well controlled, and the quality of the concrete is not up to standard, resulting in inconsistent sand lines and color on the concrete surface. After drying, the surface is not smooth and there are various cracks. In severe cases There may even be problems such as slurry leakage and fracture

, these will not only affect the aesthetic effect of the bridge guardrail, but more importantly, seriously reduce the protective ability of the guardrail, which will bring a huge threat to personnel and vehicles

[0005] 3. The existing prefabricated anti-collision barriers are not firmly connected to the bridge, and it is difficult to meet the anti-collision requirements. When a vehicle collides, there is a risk of being crashed and detached from the bridge deck

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