A kind of protective fence for small radius curve section of expressway

Abstract

The invention provides a guardrail for a small-radius curve section of an expressway. Energy-absorbing body, shaped energy-absorbing plate and elastic energy-dissipating body, the compressed energy-absorbing body is arranged in the center of the outer curved surface guard plate and the inner curved surface support plate, the shaped energy-absorbing plate is arranged around the compressed energy-absorbing body, and the elastic energy-dissipating body includes The first elastic body is arranged along the width direction of the road and the second elastic body is arranged along the direction of the road. The two ends of the second elastic body are respectively connected with the middle parts of two adjacent first elastic bodies. When colliding, the impact force acts on the outer curved guard plate, and then disperses in the compression energy absorbing body, plastic energy absorbing plate and elastic energy dissipation body for energy dissipation. The elastic energy dissipation body can decompose the force along the road direction and width direction, Realize directional energy dissipation, so as to improve the energy dissipation effect and reduce the deformation of the collision between the vehicle and the guardrail.

Description

Technical field[0001]The present invention relates to the field of road safety protection, and more particularly to a protective bar for highway small radius curve sections.Background technique[0002]The highway planning and design will inevitably use the small radius curve section. The small radius curve section will produce a larger centrifugal force to the vehicle. Since the speed of driving in the highway is faster, the driver's vault is relatively poor, and the vehicle is very easy to occur. Collision guard fields and trigger accidents in the ring collision, the angle of collision feathers in the serial collision is uncertain, the driver and passengers are extremely easy to collide with, especially, very large casualties, so the highway is installed on both sides of the highway. And protective nets prevent vehicles from rushing out of highways, protect vehicles and passengers, and reduce the loss caused by accidents.[0003]At present, the high-speed highway is: wave-shaped beam g...

AI Technical Summary

Problems solved by technology

[0005] 1. For high-speed serial collision accidents, the angle of the vehicle collision guardrail is any angle in 180°, which has uncertainty. Therefore, the protection system provided by this invention is suitable for 0° to 45° and 135° to 180° The protective effect of the bending section collision is extremely limited;

[0006] 2. During the installation process, due to the large number of springs, the springs are easily deformed due to irregular installation, which makes it difficult for the protection system to achieve the expected effect;

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