A safe road guardrail and terminal connection structure

Abstract

The invention discloses a load-bearing webbing for a guardrail, which has large thickness, high strength, low elongation, and a single-layer load-bearing capacity meeting the requirements of a single guardrail board; a weaving method for a load-bearing webbing for a guardrail; The safety-type road guardrail with force webbing has simple connection structure, fast and convenient installation, stable and flexible connection, large displacement and deformation of the protective beam, and the fixing part deforms first during the collision process, which can gradually release the energy generated by the collision, improving the Cushioning performance, when the column falls, the protective beam will not fall along with it, preventing the vehicle from jumping over the guardrail, with higher safety performance, lighter weight, low installation difficulty and long service life; a kind of protective webbing with the above-mentioned guardrail load-bearing webbing The end connection structure of the bar, the anti-blocking block first deforms during the collision process, can gradually release the energy generated by the collision, improves the buffer performance, low installation difficulty, anti-ultraviolet, heat and humidity resistance, good flame retardant effect, and long service life.

Description

technical field [0001] The invention belongs to the technical field of road protection facilities, and in particular relates to a safe road protection fence and an end connection structure. Background technique [0002] The traditional highway guardrail is usually a connection structure in which corrugated steel guardrails are spliced ​​together and supported by the main column. The above structure has the following disadvantages: 1. Steel is a hard material, and its elongation at break is only about 3%, and the degree of deformation is relatively low. Small, the effect of energy absorption is poor; 2. In the event of a car accident or a strong impact, the steel guardrail is extremely easy to insert into the car body, causing greater damage to the personnel on the vehicle; 3. The shielding area of ​​the steel guardrail is large, When installed on both sides of the road, due to the long-term view of the long-distance guardrail, it will cause a strong sense of oppression to pe...

AI Technical Summary

Problems solved by technology

[0002] The traditional highway guardrail is usually a connection structure in which corrugated steel guardrails are spliced ​​together and supported by the main column. The above structure has the following disadvantages: 1. Steel is a hard material, and its elongation at break is only about 3%, and the degree of deformation is relatively low. Small, the effect of energy absorption is poor; 2. In the event of a car accident or a strong impact, the steel guardrail is extremely easy to insert into the car body, causing greater damage to the personnel on the vehicle; 3. The shielding area of ​​the steel guardrail is large, When installed on both sides of the road, due to the long-term view of the long-distance guardrail, it will cause a strong sense of oppression to pedestrians on the road, which will have a certain impact on driving; 4. For rough roads in mountainous areas, it is hard The installation of steel guardrails is inconvenient, and the curved parts need special treatment to achieve continuous installation, which brings great difficulty to the installation; 5. The manufacturing energy consumption of steel guardrails is relatively high, especially in the process of anti-corrosion galvanizing, carbon emissions Larger, COD emissions are larger, it will cause serious pollution to the environment, and the effect of energy saving and environmental protection is not good; 6. The standard length of the steel guardrail is 4.32m, 1,000 pieces are required per kilometer, and the total weight is more than 60 tons. Single-piece bolt connection is required during installation , and the cost of transportation is high; 7. When the column is knocked down, the guardrail will fall along with the column, and vehicles with a higher center of gravity will easily jump over the guardrail and cause greater damage

On the one hand, this structure increases the bonding process of the webbing layer and increases the strength loss; on the other hand, when the webbing layer is stressed, the force is not uniform, so that the overall load-bearing capacity is less than the sum of the multi-layer webbing, which further reduces the guardrail. Bearing level

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