Energy-absorbing highway guardrail and damping elastomer

A technology of road guardrails and elastic bodies, which is applied in the direction of roads, roads, road safety devices, etc., can solve problems such as bending or loosening of columns, high manpower and material costs, and vehicle damage, so as to improve safety performance, enhance protection performance, Good energy absorption effect

Inactive Publication Date: 2020-02-21
济南金诺公路工程监理有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the current safety problems of existing highway guardrails based on corrugated plate structures mainly include the defects in the following aspects: when accidental collisions such as car accidents occur, the corrugated guardrails that bear the brunt instantly transmit

Method used

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  • Energy-absorbing highway guardrail and damping elastomer
  • Energy-absorbing highway guardrail and damping elastomer
  • Energy-absorbing highway guardrail and damping elastomer

Examples

Experimental program
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Embodiment 1

[0071] Embodiment one, such as Figure 2 to Figure 5 As shown, in this embodiment, without special description, each crash barrier unit includes a double wave corrugated plate, at least two uprights, at least two damping elastic bodies, and several pull bolt assemblies and bolt assemblies, wherein the pull bolt assemblies or Bolt assemblies or screws are collectively referred to as fasteners. In the actual implementation process, it is clear to choose the appropriate fasteners according to the different connection occasions.

[0072] refer to Figure 27 , the corrugated plate 100, as a preferred method, the most common one is a W-shaped double-wave corrugated plate, and a mounting part is arranged in the center, which is made of a steel plate after 5 mm, and is formed by multiple pressure rolls. And the surface is anti-corrosion. A further beneficial design is that an inward flange 110 is provided at the upper and lower edges of the corrugated plate 100, or it is called a be...

Embodiment 2

[0096] refer to Figure 16 to Figure 18 , this embodiment improves the structure of the damping elastic member. Specifically, the difference from the first embodiment is that the helical part of the damping elastic member itself is also a helical shape rolled by a corrugated plate, that is, the helical part and the installation The metal sections of the parts are the same, all of which are W-shaped. This structure has better elastic properties, and the impact resistance and energy absorption effects are better than those of the examples. Of course, its manufacturing difficulty and manufacturing cost are relatively high, and it can preferably be applied to accident-prone road sections.

[0097] In this embodiment, elastic fillers, thin-walled steel pipes, etc. used to increase the performance of the damping elastic member are still applicable.

[0098] Further, in this embodiment, reversely bent W-shaped corrugated plates can be filled in the spiral gap 250 to form fillers to ...

Embodiment 3

[0100] refer to Figure 23 , Figure 25 , in this embodiment, the biggest difference from Embodiment 1 is that it is set in pairs. In some accident-prone places, especially heavy-duty truck accident-prone places, traditional columns and guardrails are vulnerable under the impact of heavy trucks, causing vehicles to rush out of the guardrail, which aggravates the occurrence of secondary accidents. In this embodiment, the traditional single column is changed to double column, that is to say, Figure 23 The double uprights are used to replace the traditional one upright. Two uprights are arranged close to each other, and a damping elastic part is installed on the double uprights. The specific style of the damping elastic part is as follows:

[0101] The damping elastic member includes two symmetrically arranged single-screw mechanisms, that is, a helical part 230 and a buckle structure 210 are respectively arranged in each helix, and a corrugated part 220 is formed between the...

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Abstract

The invention discloses an energy-absorbing highway guardrail and a damping elastomer. The guardrail comprises a plurality of anti-collision guardrail units, each anti-collision guardrail unit comprises a corrugated plate, a standing column, the damping elastomer and a fastener, wherein the corrugated plates are fastened to the damping elastomers through the fasteners, and the adjacent anti-collision guardrail units are connected into a continuous guardrail through the corrugated plates; the damping elastomers are of single spiral structures, at least part of spiral gaps of the single spiral structures are filled with energy dissipation fillers and/or elastic fillers, the single spiral structures are installed on the stand columns, the end parts of the inner ends of the single spiral structures are fixed to the stand columns, and the end parts of the outer ends of the single spiral structures are fixed to the corrugated plates. The guardrail can be used for replacing an existing guardrail system, has stronger protection strength, the rigidity of a waveform guardrail, elasticity and excellent energy absorption and energy absorption as well as a more protective effect.

Description

technical field [0001] The invention relates to the technical field of highway guardrail facilities. Background technique [0002] Existing expressway guardrails are mainly divided into three types: rigid concrete guardrails, semi-rigid corrugated guardrails and flexible cable guardrails. Among them, the semi-rigid wave guardrail has the widest application range. [0003] The traditional semi-rigid corrugated guard plate is composed of corrugated plates, columns, and anti-blocking blocks. Refer to figure 1 . [0004] Regarding the improvement of the material of the corrugated plate, for example, CN 102900036 B, the specific improvement measures for the corrugated plate are: changing the material of the steel plate to a composite material, and the specific corrugated plate is composed of an outer tube plate body and an inner layer tube plate body, The first layer is the three-layer decompression buffer honeycomb capsule formed in the guardrail board, the second layer is th...

Claims

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Application Information

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IPC IPC(8): E01F15/04
CPCE01F15/04E01F15/0453E01F15/0461E01F15/0484
Inventor 冯涛吴顺祺刘淑华王树观祁云成刘国庆庞尊俊蔡海峰董圣猛张功勇
Owner 济南金诺公路工程监理有限公司
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