CN103015347B - Highway guardrail with good energy absorption capacity - Google Patents

Abstract

The invention discloses a highway guardrail with good energy absorption performance, which comprises a column and a guardrail board arranged on at least one side of the column, and is characterized in that a rubber ring anti-blocking block is fixedly arranged between the column and the guardrail board, and a The first connection block, the second connection block is fixedly arranged on the guardrail, the first collar and the second collar are arranged on the rubber ring anti-blocking block, and the first collar and the second collar are arranged along the edge of the rubber ring anti-blocking block. The central line is arranged symmetrically, the rubber ring anti-blocking block is fixed with the first connecting block through the first collar, and the rubber ring anti-blocking block is fixed with the second connecting block through the second collar. The advantage is that a rubber ring anti-blocking block is set between the column and the guardrail. Due to the good flexibility and viscoelastic properties of rubber, when a vehicle of a certain mass hits the highway guardrail at a certain speed and impact angle, the rubber ring prevents the block from being blocked. The block can absorb the impact kinetic energy of the vehicle to the greatest extent, prevent the double corrugated steel plate from greater deformation, and guide the vehicle to the normal lane at a small angle.

Description

A highway guardrail with good energy absorption performance

technical field

The invention relates to a highway guardrail, in particular to a highway guardrail with good energy absorption performance.

Background technique

On both sides and in the center of the expressway, expressway guardrails are designed and installed in order to prevent running vehicles from rushing out of their lanes. With the massive construction of highways, urban interchanges, elevated roads, etc., the transportation network is becoming more and more dense. At the same time, the number of cars in the world is increasing year by year, and the incidence of traffic accidents is also increasing year by year. According to statistics, there are about 250 incidents of hitting the central guardrail every 200 meters of expressway every year. This type of incident is three times that of other types of traffic accidents on the expressway, and there are many accidents that cause heavy casualties due to too hard guardrails. .

Existing expressway guardrails are mainly divided into three types: rigid concrete guardrails, semi-rigid corrugated guardrails and flexible cable guardrails. From the perspective of structure and safety performance, the existing highway guardrails mainly have the following defects: although the wall structure of the concrete guardrail can basically prevent large and heavy vehicles from going over the guardrail, and can effectively prevent small vehicles from getting out of the guardrail, but due to The concrete deforms very little when it is subjected to external loads, so the kinetic energy of the vehicle absorbed by the guardrail during the collision is very small, and the dynamic shear force on the collision vehicle is very large, which can easily cause serious damage to the vehicle, and even cause casualties to the occupants in the vehicle ; Although the semi-rigid wave guardrail has good comprehensive mechanical properties and has a good resistance and guiding effect on general vehicle collision accidents, the strength of the wave guardrail is not large enough to effectively intercept high-speed vehicles with high mass; the flexible cable guardrail is due to During the impact process, the contact area with the vehicle is small, the absorbed energy is limited, and it only has a good interception and guiding effect on the impact of the car.

Contents of the invention

The technical problem to be solved by the present invention is to provide a highway guardrail with good energy absorption performance that can effectively prevent vehicles from rushing out of the roadbed or the central guardrail and at the same time allow the vehicle to bounce back to the normal lane at a small angle.

The technical solution adopted by the present invention to solve the problems of the technologies described above is:

A highway guardrail with good energy absorption performance, comprising a column and a guardrail board arranged on at least one side of the column, a flexible anti-blocking block is fixedly arranged between the upright post and the guardrail board, and the flexible anti-blocking block is made of rubber The ring anti-blocking block, the first connecting block is fixedly arranged on the column, the second connecting block is fixedly arranged on the guardrail, and the first collar and the second connecting block are arranged on the rubber ring anti-blocking block. The collar, the first collar and the second collar are symmetrically arranged along the center line of the rubber ring anti-blocking block, and the rubber ring anti-blocking block passes through the first collar and the The first connecting block is fixedly connected, and the rubber ring anti-blocking block is fixedly connected to the second connecting block through the second collar.

The rubber ring anti-blocking block is an annular rubber ring, the annular rubber ring is arranged horizontally, and the axial center line of the annular rubber ring is perpendicular to the horizontal plane.

The anti-blocking block of the rubber ring is an annular rubber ring, the said annular rubber ring is arranged vertically, and the axial center line of the said annular rubber ring is parallel to the horizontal plane. The ring-shaped rubber ring has a simple structure and is easy to form, and the rubber cost is low and has good flexibility and viscoelastic properties. When the vehicle hits the guardrail, the rubber ring is deformed after the impact, which can absorb part of the kinetic energy generated during the impact. At the same time, the rubber ring The rebound can guide the car back to the normal running lane, and both horizontal and vertical settings can play a better role, and the energy absorption effect is better than the anti-block block with a rigid structure on the outside.

The structure of the first collar is the same as that of the second collar, the first collar includes two connecting ears, and the two connecting ears are arranged symmetrically on both sides of the first collar. The connecting ear is fixedly connected with the first connecting block through bolts. The first collar is secured by the attachment lug for easy installation.

The first connecting block includes a first base and a first fixing plate arranged on the side end surface of the first base, and the second connecting block includes a second base and a first fixing plate arranged on the second base. Two fixing plates, the structure of the first fixing plate and the second fixing plate is the same, after the first fixing plate is fixedly connected with the connecting ear, the first fixing plate and the A square through hole is formed between the first collars, and the rubber ring anti-blocking block is tightly clamped in the square through hole. The square through hole formed by the first fixing plate and the first collar tightly clamps the anti-blocking block of the rubber ring, the structure is more reliable, and the anti-blocking block of the rubber ring can be deformed to a maximum extent, so that the anti-blocking block of the rubber ring can be deformed to a maximum extent. Absorbs the kinetic energy generated when the vehicle hits.

The column is a cylindrical column, and the end surface of the first connection block connected to the column is an inner concave surface, and the inner concave surface fits with the arc-shaped outer contour of the column. The first connecting block is fitted and fixedly connected to the column, and the force-bearing area is increased, making the overall structure more stable.

Compared with the prior art, the present invention has the advantages that: a rubber ring anti-blocking block is arranged between the column and the guardrail, and the rubber ring anti-blocking block is an annular rubber ring. Since the rubber ring has good flexibility and stickiness Elastic characteristics, when a vehicle of a certain mass hits the highway guardrail at a certain speed and impact angle, the rubber ring can absorb the impact kinetic energy of the vehicle to a greater extent, prevent the double corrugated steel plate from being deformed more, and at the same time hold the vehicle at a higher A small angle leads to the normal lane.

Description of drawings

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is the top view of Fig. 1;

FIG. 3 is a schematic structural diagram of Embodiment 2 of the present invention;

Fig. 4 is the top view of Fig. 3;

FIG. 5 is a schematic structural diagram of Embodiment 3 of the present invention;

Figure 6 is a top view of Figure 5;

FIG. 7 is a schematic structural diagram of Embodiment 4 of the present invention;

Figure 8 is a top view of Figure 7.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

Embodiment 1: As shown in Fig. 1 and Fig. 2, a highway guardrail with good energy absorption performance includes a column 1 and a guardrail 2 arranged on one side of the column 1, and the column 1 and the guardrail 2 are fixedly arranged with Flexible anti-blocking block, the flexible anti-blocking block 3 is an annular rubber ring 3 with a central hole, the first connecting block 4 is fixedly arranged on the column 1, the second connecting block 5 is fixedly arranged on the guardrail board 3, and the circular ring The first collar 6 and the second collar 7 are arranged on the shaped rubber ring 3, and the first collar 6 and the second collar 7 are arranged symmetrically along the center line of the annular rubber ring 3, and the annular rubber ring 3 passes through The first collar 6 is fixedly connected to the first connecting block 4 , and the annular rubber ring 3 is fixedly connected to the second connecting block 5 through the second collar 7 .

In this specific embodiment, the annular rubber ring 3 is arranged horizontally, that is, the axial centerline of the annular rubber ring 3 is perpendicular to the horizontal plane.

In this specific embodiment, the first collar 6 has the same structure as the second collar 7, and the first collar 6 includes two connection ears 61, and the two connection ears 61 are symmetrically arranged on both sides of the first collar 6, and the connection The ear 61 is fixedly connected with the first connecting block 4 by bolts.

In this specific embodiment, the first connecting block 4 includes a first base 41 and a first fixing plate 42 arranged on the side end surface of the first base 41, and the second connecting block 5 includes a second base 51 and is arranged on The second fixed plate 52 on the second base 51, the first fixed plate 51 and the second fixed plate 52 have the same structure, wherein, after the first fixed plate 51 is fixedly connected with the connecting ear 61, the first fixed plate 51 and the second fixed plate A square through hole is formed between the set of rings 6, and the annular rubber ring 3 is tightly clamped in the square through hole.

In this specific embodiment, the column 1 is a cylindrical column, and the end surface of the first connecting block 4 connected to the column 1 is an inner concave surface, and the inner concave surface fits the arc-shaped outer contour of the column 1 .

In this specific embodiment, the guardrail board 2 is a double corrugated steel plate.

Embodiment 2: other parts are the same as Embodiment 1, the difference is that guardrails 2 are provided on both sides of the column 1, as shown in Fig. 3 and Fig. 4 .

Embodiment 3: Other parts are the same as Embodiment 1, the difference is that the annular rubber ring 3 is vertically arranged, that is, the axial centerline of the annular rubber ring 3 is parallel to the horizontal plane, as shown in Figure 5 and Figure 6 .

Embodiment 4: other parts are the same as Embodiment 3, the difference is that guardrails 2 are provided on both sides of the column 1, as shown in Fig. 7 and Fig. 8 .

Claims (5)

1. the freeway guardrail that an energy absorption performance is good, comprise column and be arranged on the guardrail board of column at least side, it is characterized in that being fixedly installed flexible obstruction block between described column and guardrail board, described flexible obstruction block is rubber ring obstruction block, described column is fixedly installed the first contiguous block, described guardrail board is fixedly installed the second contiguous block, described rubber ring obstruction block is provided with first collar and second collar, the first described collar and second collar are symmetrical arranged along the center line of described rubber ring obstruction block, described rubber ring obstruction block is fixedly connected with the first described contiguous block by the first described collar, described rubber ring obstruction block is fixedly connected with the second described contiguous block by the second described collar, the first described collar is identical with the second thimble structure, the first described collar comprises two engaging lugs, two described engaging lugs are symmetricly set on the both sides of the first described collar, described engaging lug is fixedly connected with the first described contiguous block by bolt.

2. the freeway guardrail that a kind of energy absorption performance as claimed in claim 1 is good, it is characterized in that described rubber ring obstruction block is annular rubber circle, described annular rubber circle is horizontally disposed with, the longitudinal center line of described annular rubber circle and horizontal plane.

3. the freeway guardrail that a kind of energy absorption performance as claimed in claim 1 is good, it is characterized in that described rubber ring obstruction block is annular rubber circle, described annular rubber circle is vertically arranged, the longitudinal center line of described annular rubber circle and plane-parallel.

4. the freeway guardrail that a kind of energy absorption performance as claimed in claim 1 is good, it is characterized in that the first described contiguous block comprises the first pedestal and is arranged on the first fixed head on the first base side end face, the second described contiguous block comprises the second pedestal and is arranged on the second fixed head on the second pedestal, the first described fixed head is identical with the structure of the second described fixed head, after the first described fixed head is fixedly connected with described engaging lug, a square through hole is formed between the first described fixed head and the first described collar, described rubber ring obstruction block is tightly stuck in described square through hole.

5. the freeway guardrail that a kind of energy absorption performance as claimed in claim 1 is good, it is characterized in that described column is cylindrical column, the end face that the first described contiguous block is connected with described column is inner concave, and the circular-arc-shaped exterior contour of described inner concave and described column fits.