A Protection System for Small Radius Curved Sections of Expressway

Abstract

The invention provides an expressway small-radius curve road section protection system. The expressway small-radius curve road section protection system comprises a linear guardrail and a bending guardrail connected with the linear guardrail; the linear guardrail is composed of a plurality of linear guardrail units; each linear guardrail unit comprises a first supporting pillar and a first guardrail body fixed to the first supporting pillar; the bending guardrail is composed of a plurality of bending guardrail units; each bending guardrail unit comprises a second supporting pillar and a secondguardrail body fixed to the second supporting pillar; each second guardrail body comprises a second U-shaped steel groove, a second protective layer, compressing pads and at least two compressing mechanisms, wherein the compressing mechanisms are installed between the second U-shaped steel groove and the second protective layer, each compressing pad is arranged between every two adjacent compressing mechanisms, one end of each compressing pad is tightly attached inside the second U-shaped steel groove, and the other end of each compressing pad is flush with the second protective layer. The expressway small-radius curve road section protection system can effectively lower the influence of impact on a guardrail and a car structure, improves the anti-impact performance of the guardrail, andhas the advantages of being simple in structure, low in cost, and easy and convenient to install.

Description

technical field [0001] The invention relates to a road safety protection device, in particular to a protection system for a small-radius curved section of an expressway. Background technique [0002] In the process of highway planning and design, it is inevitable to use small-radius curved road sections. Small-radius curved road sections will generate large centrifugal force on vehicles. Due to the high speed of driving on the expressway, the driver's sight distance is poor, and vehicle collisions are prone to occur. Accidents caused by guardrails, and the collision angle is often too large, the driver and passengers are extremely vulnerable to strong collisions, and are particularly prone to major and extraordinarily serious casualties. Therefore, guardrails and protective nets are installed on both sides of the expressway to prevent vehicles from rushing out of the expressway , Protect vehicles and passengers, and reduce losses caused by accidents. [0003] At present, th...

AI Technical Summary

Problems solved by technology

However, for curved roads, its effect is limited. Generally, vehicles collide with guardrails at an acute angle when driving on expressways. When the collision angle is less than 45°, the collision force is mainly concentrated in the longitudinal direction of the road. °, the collision force is mainly concentrated in the horizontal direction of the road. The above-mentioned invention mainly absorbs the force of the collision concentrated in the horizontal direction of the road, but the absorption of the vertical operation force of the road is not strong, so that the overall effect is not good. Therefore, the design and production of a It is particularly important to protect the small-radius curve section of the expressway

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