JP2023105992A - Protection fence - Google Patents

Abstract

To provide a protection fence comprising a support pillar having rigidity coping with collision of vehicles from different directions.SOLUTION: A protection fence comprises a plurality of support pillar bodies, and a beam-shaped body bridged between the support pillar bodies, wherein the support pillar body is formed into an approximately cylindrical shape, a core material is disposed inside the support pillar body, the core material has a rectangular cylindrical body, and a reinforcing member is arranged at a flat portion of the rectangular cylindrical body on its outer peripheral surface. Even when vehicles collide with each other at a considerable speed, the support pillar body and the core material bend to absorb shock preferably, and it is possible to obtain a similar effect against the collision from any angles.SELECTED DRAWING: Figure 7

Description

TECHNICAL FIELD The present invention mainly relates to a protection fence for preventing entry of vehicles.

BACKGROUND ART Conventionally, so-called protective fences have been installed at boundaries between sidewalks and roadways, boundaries between roads and sites of parks, public facilities, commercial facilities, and the like. By installing a protective fence, vehicles such as automobiles and trucks are prevented from entering beyond the boundary, and in the event that a vehicle causes an accident and collides with the protective fence, the boundary is blocked. It serves to protect pedestrians on the inside (sidewalks, parks, etc.).
In such a protective fence, since the struts that support the beams and the like have high rigidity, pedestrians can be protected more reliably even in the event of a vehicle collision.

As a protective fence having columns with high rigidity, a load-bearing material for protective structures such as falling rocks, avalanches, landslides, etc., in which a reinforcing body is provided inside a steel pipe, the reinforcing body is provided along the inner surface of the steel pipe. There is provided a load-bearing material for protection structures against falling rocks, avalanches, and landslides, characterized by comprising plate-shaped reinforcing ribs provided in the tension region and the compression region, respectively, and connecting members that connect these plate-shaped reinforcing ribs. , in US Pat.

JP 2012-026206 A

A protective fence composed of a load-bearing material for protective structures such as falling rocks, avalanches, and landslides described in Patent Document 1 has a tension region and a compression region as reinforcing bodies so as to deal with falling objects from above the slope. However, when vehicles collide, there is a possibility of contact not only from one direction but also from different directions.

SUMMARY OF THE INVENTION The present invention provides a guardrail with struts having rigidity to accommodate vehicle impacts from different directions.

In order to achieve the above object, the present invention has the following configuration. That is, a protective fence according to the present invention is a fence comprising column bodies erected at intervals and beam-shaped bodies constructed between the column bodies, wherein the column bodies are substantially cylindrical. A core material is disposed inside the support body, the core material has a rectangular tubular body, and a reinforcing member is arranged on a flat portion of the outer peripheral surface of the rectangular tubular body. It is characterized.

According to the protective fence according to the present invention, it is provided with column bodies erected at intervals and beam-shaped bodies constructed between the column bodies, the column bodies being formed in a substantially cylindrical shape, and the columns A core material is arranged inside the main body, the core material has a square tubular body, and a reinforcing member is arranged on a flat portion of the outer peripheral surface of the square tubular body. Therefore, even if the vehicle collides at a high speed, the support body and the core member bend to suitably absorb the impact, and the same effect can be obtained for collisions from any angle.

Further, the rectangular tubular body can be a tubular body having a polygonal cross-sectional shape. That is, the prismatic body referred to here refers to a long cylindrical body having a polygonal cross-sectional shape, and the cross-sectional shape may be any polygonal shape such as quadrangle, pentagon, hexagon, octagon, etc. It is possible to

Further, if the rectangular tube-shaped body is a tube-shaped body having a regular polygonal cross-sectional shape, it becomes possible to more preferably absorb impacts in all directions.

Furthermore, in the protective fence according to the present invention, the reinforcing member may be arranged over substantially the entire length of the square tubular body in the length direction. In addition, in the protection fence according to the present invention, the reinforcing member may be formed by bending a long plate-like body.

ADVANTAGE OF THE INVENTION According to the protection fence which concerns on this invention, a support|pillar main body can be provided with the rigidity which can respond to the collision of the vehicle not only from one direction but from a different direction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows one form of implementation of the protective fence which concerns on this invention. FIG. 2 is a right side view of FIG. 1; It is a front view which expands and shows the attachment part of the beam-shaped body of FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3; FIG. 2 is a front view showing the core material of FIG. 1; FIG. 6 is a plan view of FIG. 5; FIG. 6 is a cross-sectional view taken along the line AA in FIG. 2, showing a state in which the core material in FIG. 5 is housed in the column body; FIG. 4 is a plan view showing another embodiment of the core material of the protective fence according to the present invention; FIG. 4 is a plan view showing still another embodiment of the core material of the protective fence according to the present invention;

Embodiments of the invention will be specifically described with reference to the drawings.
In the drawing, 1 is a protective fence.
In the protection fence 1, a beam-like body 6 is constructed between a plurality of pillar bodies 2 erected on an installation surface G at intervals in the lateral direction.

The column main body 2 is a long cylindrical body, and has a cap 21 attached to its upper end and a lower portion that is buried to stand on the installation surface G. As shown in FIG. The protection fence 1 of this embodiment arranges the four support|pillar main bodies 2 at equal intervals.
The beam-shaped bodies 6 are cylindrical elongated bodies, and three of them are arranged at intervals in the vertical direction.
A bracket 7 is fixed to the front of each column body 2 by a bolt B1 and a nut N penetrating in the longitudinal direction.

3 is a front view showing an enlarged mounting portion of the beam-like body 6 in FIG. 1, and FIG. 4 is a sectional view taken along the line AA in FIG.
At the end of each beam-shaped body 6, a connecting fitting 8 is inserted and attached to the inside. The connecting fitting 8 has a cylindrical shape with an outer diameter smaller than the inner diameter of the beam-like body 6, and is fixed inside the beam-like body 6 with a bolt B2 and a nut N passing through the beam-like body 6 in the vertical direction.
The connecting metal fitting 8 is fixed to the bracket 7 by a bolt B3 and a nut N passing through the bracket 7 in the vertical direction. .
Although the support body 2 is made of steel in this embodiment, any metal material such as stainless steel or aluminum can be selected and applied as long as it can receive the impact of a vehicle collision and can be suitably bent.

A core material 4 is arranged inside each support body 2 .
5 is a front view showing the core material 4 of FIG. 1, and FIG. 6 is a plan view of FIG.
The core member 4 includes, in a plan view, a substantially square rectangular tubular body 41 with rounded corners, and reinforcing members 42 provided on the four flat portions 41 a of the rectangular tubular body 41 . The reinforcing member 42 is formed by bending a long plate-shaped steel body into a substantially L shape in a plan view. fixed by
The core material 4 is made of steel like the column body 2, but any metal material such as stainless steel or aluminum can be selected and applied as long as it can receive the impact of a vehicle collision and bend appropriately. It is possible.

The core material 4 is housed inside the column body 2 as shown in FIGS. The height is about two-thirds from the part. Although this can be set to any height below the bracket 7, it is necessary to set it to a height equal to or higher than the height at which the vehicle is expected to collide.
That is, the core material 4 is arranged so as to always be positioned in the vicinity of the installation surface G inside the column body 2 .
FIG. 7 is a cross-sectional view taken along the line AA in FIG. 2, showing the state in which the core member 4 in FIG.

The protective fence 1 mainly protects pedestrians and the like located on the rear side from the vehicle traveling on the front side by means of the support body 2 and the beam-shaped body 6, and when the vehicle strongly collides, the support body 2 and the beam-shaped body 6 The core member 4 receives the impact of the collision, and bends and deforms in the vicinity of the installation surface G and at the collision height of the vehicle to absorb the impact and stop the vehicle properly.

8 and 9 are sectional views showing another embodiment of the core material 4 of the guard fence 1 according to the present invention. 8 and 9, similarly to FIG. 7, depict cross sections near the installation surface G of the support body 2 with the core material 4 housed inside.
Regarding the core material 4 shown in FIG. 8, only differences from the core material 4 shown in FIGS. 1 to 7 will be described.
In the core member 4 shown in FIG. 8(a), the horizontal cross-sectional shape of the reinforcing member 42 is not L-shaped but arc-shaped (semi-circular). Further, in the core material 4 shown in FIG. 8B, the horizontal cross-sectional shape of the reinforcing member 42 is U-shaped instead of L-shaped.
The reinforcing member 42 of the core member 4 in the present invention can be of any shape as long as it has a shape capable of suitably absorbing the collision impact of a vehicle or the like and stopping the vehicle. However, it is preferable that all of the plurality of reinforcing members 42 have the same shape in order to produce the same effect even when a vehicle or other vehicle collides from any direction. For the same reason, it is desirable that the square tubular body 41 has a regular polygonal shape.

FIG. 9 is a plan view showing still another embodiment of the core member 4 of the guard fence 1 according to the present invention.
In the core material 4 shown in FIG. 9(a), the rectangular tubular body 41 has a regular hexagonal cross-sectional shape in plan view, and in the core material 4 shown in FIG. It has a regular octagonal cross-sectional shape in plan view. Further, in each of the embodiments (a) and (b), reinforcing members 42 each having a substantially U-shape in a plan view are provided on all the flat surfaces of the outer periphery of the square tubular body 41 .

As mentioned above, although the protective fence concerning this invention was demonstrated based on embodiment, this invention is not limited to embodiment mentioned above. Various modifications conceived by those skilled in the art are included in the scope of the present invention without departing from the gist of the present invention.

According to the present invention, the column bodies are erected at intervals and the beam-shaped bodies are installed between the column bodies, the column bodies are formed in a substantially cylindrical shape, and A core material is arranged, and the core material has a square tubular body, and a reinforcing member is arranged on a flat portion of the outer peripheral surface of the square tubular body. Therefore, even if the vehicle collides at a high speed, the support body and the core member bend to suitably absorb the impact, and the same effect can be obtained for collisions from any angle.

1 Protective fence 2 Support column body 21 Cap 4 Core material 41 Rectangular tubular body 42 Reinforcement member 6 Beam-shaped body 7 Bracket 8 Connecting fitting

Claims (5)

A fence comprising support main bodies erected at intervals and beam-shaped bodies constructed between the support main bodies,
The support body has a substantially cylindrical shape, and a core material is arranged inside the support body,
The protective fence, wherein the core material has a square tubular body, and a reinforcing member is arranged on a flat portion of an outer peripheral surface of the square tubular body. 2. The protective fence according to claim 1, wherein the square tubular body is a tubular body having a polygonal cross-sectional shape. 3. The protective fence according to claim 2, wherein the square tubular body is a tubular body having a regular polygonal cross section. The protective fence according to any one of claims 1 to 3, wherein the reinforcing member is arranged over substantially the entire length of the rectangular tubular body. 5. The protective fence according to claim 4, wherein the reinforcing member is formed by bending a long plate-like body.

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