Novel composite sandwich crash barrier on road

Abstract

The invention relates to a composite sandwich crash barrier member on a road, in particular to a novel composite sandwich crash barrier on the road. A plurality of crash bar units are connected through connectors, and each crash bar unit comprises an outer casing, an inner casing and a filling material body located in the inner casing. Metal ribs are arranged on the outer wall of the inner casing and rapidly transmit part of automobile impact loads from the outer casing to the inner casing, so that the inner casing and the outer casing share the load together, and the impact load on an automobile is effectively dispersed; the connectors comprise gear connecting and fastening elements and curved-surface cover plates, and the gear connecting and fastening elements and the curved-surface cover plates are made of composites or metal materials. The composite sandwich crash barrier can achieve multifunctional safety fortification, solves problems of traditional barrier fortification, and has the characteristics of corrosion resistance, ageing resistance, low weight, high strength, easiness of maintenance, speediness and convenience for construction, easiness of repair after damage and the like.

Description

technical field [0001] The patent of the invention relates to a highway composite material sandwich anti-collision barrier component, which is mainly used for buffer sections set on both sides of high-grade highways, dangerous sections of highways with sharp turns, bridges, and expressways, specifically a new type of composite material sandwich highway Crash barriers. Background technique [0002] With the rapid development of traffic construction such as highways and bridges in our country, the transportation capacity has been greatly improved. However, the number of cars in our country is also increasing rapidly, and consequently, the traffic accidents of vehicles colliding with guardrails in roads and bridges are also increasing, causing the situation of driving off the road, falling into the ramps on both sides and falling into the bridge is not uncommon. , resulting in huge casualties, property damage and environmental damage. In order to minimize the severity of traf...

AI Technical Summary

Problems solved by technology

However, if the energy is absorbed through deformation, a wider functional width of the guardrail needs to be set; there is another fatal flaw in the application on bridges, which requires a certain position on the side of the guardrail. After the car hits the guardrail, a large lateral deformation occurs through the to absorb energy, which results in uneconomical use of infrastructure, resources, and land

Especially after the guardrail is damaged by impact, the structure of the concrete guardrail and the metal guardrail is heavy, and partial maintenance and replacement are very inconvenient. The structural connection interface needs special treatment, which is not convenient for fast and convenient construction on the expressway

In addition, the corrosion of metal components in highway traffic engineering is also a very serious problem. Ordinary hot-dip galvanized layer protection and spray coating protection will lose their protection earlier under the oxidation of the sun and rain, especially in areas with acid rain. function, making the maintenance cost increase year by year

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