Construction method of foam concrete emergency lane

Abstract

The invention relates to a construction method of a foam concrete emergency lane. The construction method comprises the following steps: 1) leveling a site in an emergency lane construction area; (2) integrally constructing end piles, end stand columns and reinforced concrete anti-collision wall; (3) hoisting and constructing the prefabricated H-shaped pile column; 4) carrying out hoisting construction on the prefabricated reinforced concrete panel; (5) performing internal tamping plain soil layer construction between the strip-shaped foundations on the two sides; (6) foam concrete pouring; (7) performing surface layer pouring construction of the guiding section, the front buffering deceleration section and the top anti-collision section; (8) bolting a guardrail base to the top of the prefabricated H-shaped pile column; (9) performing service lane construction; (10) constructing a middle sand layer deceleration section; and (11) constructing a strong rebound rubber net deceleration system. The method has the beneficial effects that the front buffering speed reduction section, the middle sand layer speed reduction section and the strong rebound rubber net are arranged, the multiple speed reduction braking effect is achieved, buffering speed reduction braking of an out-of-control vehicle is achieved, and the damage degree of the vehicle after danger avoiding is reduced.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a construction method of a foam concrete escape lane. Background technique [0002] The avoidance lane refers to the special lane added on the outside of the long and steep downhill road section for the vehicle whose speed is out of control (brake failure) to leave the main line and decelerate safely. For drivers driving on the highway, the avoidance lane is a "life-saving road". For vehicles, especially large vehicles, continuous use of the brakes after driving downhill will easily cause the brake hub to overheat, resulting in reduced braking performance or brake failure of the vehicle, resulting in vicious traffic accidents such as rear-end collisions, collisions, and car crashes down cliffs. [0003] There are mainly four types of escape lanes: uphill, horizontal, downhill and sand piles. At present, the uphill avoidance lane is the most widely used in China, but...

AI Technical Summary

Problems solved by technology

At present, the most widely used in China is the uphill avoidance lane, but this type of escape lane requires sufficient buffer length and occupies a large area

In the mountainous and hilly areas of our country, many expressways pass through mountains and ridges, and the escape lane is restricted by the terrain, which is not easy to set up, or there is not enough space for the escape lane on some road sections, and the length is not enough

In addition, although some avoidance lanes have enhanced the braking effect, accidents such as vehicle rollovers occur due to excessive braking.

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