Highway guardrail with good energy absorption capacity

Abstract

The invention discloses a highway guardrail with good energy absorption capacity, which comprises an upright column and a guardrail plate arranged on at least one side of the upright column, and is characterized in that a rubber ring obstruction block is fixedly arranged between the upright column and the guardrail plate, a first connecting block is fixedly arranged on the upright column, a second connecting block is fixedly arranged on the guardrail plate, a first lantern ring and a second lantern ring are arranged on the rubber ring obstruction block and symmetrically arranged along the central line of the rubber ring obstruction block, and the rubber ring obstruction block is fixed with the first connecting block through the first lantern ring, and fixed with the second connecting block through the second lantern ring. The highway guardrail has the advantages that the rubber ring obstruction block is arranged between the upright column and the guardrail plate, as rubber has good flexibility and viscoelasticity, and when a vehicle with a certain mass bumps onto the highway guardrail at a certain impact angle at a certain speed, the rubber ring obstruction block can absorb the impact kinetic energy of the vehicle greatly to protect the double corrugated steel sheet from greater deformation, so that the vehicle is guided to the right lane at a smaller angle.

Description

technical field [0001] The invention relates to a highway guardrail, in particular to a highway guardrail with good energy absorption performance. Background technique [0002] On both sides and in the middle of the expressway, expressway guardrails are designed and installed in order to prevent running vehicles from rushing out of their lanes. With the massive construction of highways, urban interchanges, elevated roads, etc., the transportation network is becoming more and more dense. At the same time, the number of cars in the world is increasing year by year, and the incidence of traffic accidents is also increasing year by year. According to statistics, there are about 250 incidents of hitting the central guardrail every 200 meters of expressway every year. This type of incident is three times that of other types of traffic accidents on the expressway, and there are many accidents that cause heavy casualties due to too hard guardrails. . [0003] Existing expressway ...

AI Technical Summary

Problems solved by technology

From the perspective of structure and safety performance, the existing highway guardrails mainly have the following defects: although the wall structure of the concrete guardrail can basically prevent large and heavy vehicles from going over the guardrail, and can effectively prevent small vehicles from getting out of the guardrail, but due to The concrete deforms very little when it is subjected to external loads, so the kinetic energy of the vehicle absorbed by the guardrail during the collision is very small, and the dynamic shear force on the collision vehicle is very large, which can easily cause serious damage to the vehicle, and even cause casualties to the occupants in the vehicle ; Although the semi-rigid wave guardrail has good comprehensive mechanical properties and has a good resistance and guiding effect on general vehicle collision accidents, the strength of the wave guardrail is not large enough to effectively intercept high-speed vehicles with high mass; the flexible cable guardrail is due to During the collision process, the contact area with the vehicle is small, the absorbed energy is limited, and it only has a good interception and guiding effect on the collision of the car

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