Bridge multistage energy-absorbing guard bar

A technology for guardrails and bridges, used in bridges, bridge parts, bridge construction, etc., can solve the problems of inability to absorb collision energy, poor protection effect of guardrails, secondary traffic accidents, etc., to prevent vehicle rebound and improve stress conditions. , the effect of prolonging the time of the collision

Pending Publication Date: 2018-11-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bridge multi-stage energy-absorbing guardrail to overcome the problems that the existing guardrails have poor protection effect and cannot absorb collision energy, resulting in serious damage to the guardrail after the collision and causing secondary traffic accidents

Method used

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  • Bridge multistage energy-absorbing guard bar
  • Bridge multistage energy-absorbing guard bar
  • Bridge multistage energy-absorbing guard bar

Examples

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, a bridge multi-stage energy-absorbing guardrail of the present invention includes: a bridge deck structure 13, a guardrail column 10, a rigid column 12 at the end of the guardrail and a sandbag energy-absorbing part 1, wherein a metal shell 206 is arranged in the bridge deck structure 13 , the metal shell 206 is fixed on the bridge deck structure 13 by bolts 201;

[0030] Such as Figure 4 As shown, the interior of the metal shell 206 is provided with two annular slots distributed up and down, and the two annular slots are separated by a partition, wherein the upper annular slot is used to accommodate The torsion spring 202 of the torsion spring 202 has two fixed ends protruding from the top and bottom ports of the torsion spring 202 respectively, the fixed end protruding from the top is fixed on the rotating shaft 207 at the bottom ...

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Abstract

The invention discloses a bridge multistage energy-absorbing guard bar. The bridge multistage energy-absorbing guard bar comprises four kinds of buffering parts which include sand bag energy-absorbingparts, elastic pulling strips, elastic parts installed on columns, torsion springs and rubber pads, and the torsion springs and the rubber pads are arranged at the bottoms of the columns; through thearrangement of the four kinds of buffering parts, the purpose of multistage energy-absorbing buffering is achieved; by prolonging the collision time of a vehicle, the collision acceleration of the vehicle is reduced, the vehicle can be prevented from both turning over and rebounding, and a good effect of protecting a driver and passengers is achieved; meanwhile, the collided guard bar can be restored under the effect of an elastic device, the possibility that the guard bar is deformed to the non-recoverable state or directly sheds is reduced, thus the guard bar can be put into use again afterbeing briefly repaired, and the cost for maintaining the bridge guard bar is reduced.

Description

technical field [0001] The invention belongs to the technical field of traffic safety protection, and in particular relates to a bridge multi-stage energy-absorbing guardrail. Background technique [0002] With the rapid development of highway construction in our country, driving safety is facing a severe situation, and guardrails, as safety facilities, play an important protective role. [0003] The current bridge guardrails are mainly made of steel and concrete, and the materials are hard. Once the guardrails collide violently with high-speed vehicles, it is likely to cause fatal injuries to pedestrians and vehicles. At the same time, the simple steel cable structure is easy to damage the vehicle, and it is easy to rebound the vehicle, causing secondary traffic accidents. [0004] Most of the currently used bridge guardrails only have a single protective effect. When an impact occurs, it is likely to cause the guardrail to deform or fall off directly, resulting in a high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/10
CPCE01D19/103
Inventor 王峰刘岩吕鹏宇霍五星姬乃川张耀
Owner CHANGAN UNIV
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