Protective fence

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

[0005] , , , , , ,

[0004] , , , ,

[0001] The present invention mainly relates to a protective fence for preventing vehicle entry.

Background Art

[0002] Conventionally, so-called protective fences have been installed at the boundaries between sidewalks and roadways, and at the boundaries between roads and the sites of parks, public facilities, commercial facilities, etc. By installing the protective fence, it prevents vehicles such as automobiles and trucks from entering beyond the boundary, and also serves to protect pedestrians inside the boundary (sidewalks, parks, etc.) when a vehicle collides with the protective fence due to an accident or the like. Such a protective fence can more reliably protect pedestrians even when a vehicle collides because the support columns for beams etc. have high rigidity.

[0003] As a protective fence with high-rigidity support columns, in a load-bearing material for protection structures against falling rocks, avalanches, landslides, etc. where a reinforcing body is provided inside a steel pipe, the reinforcing body includes plate-shaped reinforcing ribs provided respectively in the tensile region and the compression region of the steel pipe along the inner surface of the steel pipe, and a connecting material for connecting these plate-shaped reinforcing ribs. The configuration of the load-bearing material for protection structures against falling rocks, avalanches, landslides, etc. is described in Patent Document 1.

Prior Art Documents

Patent Documents

[0004] <000002 >

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The protective fence, constructed from load-bearing material for rockfall, avalanche, and landslide protection structures as described in Patent Document 1, has tensile and compressive regions in its reinforcing body to cope with falling objects from above the slope. However, in the event of a vehicle collision, contact may occur from multiple directions, not just one.

[0006] This invention provides a protective fence in which the support posts have rigidity to withstand collisions from vehicles coming from different directions. [Means for solving the problem]

[0007] To achieve the above objective, the present invention has the following configuration. That is, the protective fence according to the present invention is a fence comprising post bodies erected at intervals and beam-like bodies installed between each of the post bodies, wherein the post bodies are substantially cylindrical in shape, a core material is arranged inside the post body, the core material has a rectangular tubular body, and reinforcing members are arranged on the flat portion of the outer surface of the rectangular tubular body, and the reinforcing members are formed to fit between the corners at both ends of the flat portion. The reinforcing members are positioned so that they do not overlap with each other in the radial direction of the support column body. It is characterized by the following: Furthermore, the reinforcing members may be placed on all of the flat portions of the outer circumferential surface of the core material. Furthermore, the protective fence according to the present invention is a fence comprising post bodies erected at intervals and beam-like bodies installed between each of the post bodies, wherein the post bodies are substantially cylindrical in shape, a core material is placed inside the post bodies, the core material has a rectangular tubular shape, and reinforcing members are placed on the flat portion of the outer surface of the rectangular tubular shape, the reinforcing members are formed to fit between the corners at both ends of the flat portion, and the reinforcing members are formed by bending a long plate-like body.

[0008] The protective fence according to the present invention comprises support columns erected at intervals and beam-like bodies installed between each of these support columns. The support columns are formed in a substantially cylindrical shape, a core material is placed inside each support column, and the core material has a rectangular tubular shape, with reinforcing members placed on the flat portion of the outer surface of this rectangular tubular shape. Therefore, even when a vehicle collides at a considerable speed, the support columns and core material bend to suitably absorb the impact, and the same effect can be obtained for collisions from any angle.

[0009] Furthermore, the aforementioned rectangular tubular body can be made into a cylindrical body having a polygonal cross-sectional shape. In other words, the rectangular tubular body referred to here is a long cylindrical body with a polygonal cross-sectional shape, and the cross-sectional shape can be any angular shape such as a square, pentagon, hexagon, or octagon.

[0010] Furthermore, if the rectangular tubular body is made into a tubular body with a regular polygonal cross-sectional shape, it becomes possible to absorb shock more effectively in all directions.

[0011] Furthermore, in the protective fence according to the present invention, the reinforcing member may be arranged along substantially the entire length of the rectangular tubular body. 。 [Effects of the Invention]

[0012] According to the protective fence of the present invention, the support column body can be provided with rigidity that can withstand collisions by vehicles not only from one direction but also from different directions. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view showing one embodiment of a protective fence according to the present invention. [Figure 2] This is a right side view of Figure 1. [Figure 3] This is a front view showing an enlarged view of the mounting portion of the beam-shaped body in Figure 1. [Figure 4] This is a cross-sectional view AA in Figure 3. [Figure 5] This is a front view showing the core material in Figure 1. [Figure 6] Figure 5 is a plan view. [Figure 7] Figure 2, section AA, shows the core material of Figure 5 housed within the main support column. [Figure 8] This is a plan view showing another embodiment of the core material of the protective fence according to the present invention. [Figure 9] This is a plan view showing yet another embodiment of the core material of the protective fence according to the present invention. [Modes for carrying out the invention]

[0014] The embodiments of the invention will be specifically described based on the drawings. In the drawings, 1 is a protective fence. The protective fence 1 has a beam-like body 6 installed between a plurality of upright support column bodies 2 that are installed on the installation surface G at intervals in the horizontal direction.

[0015] The support column body 2 is a cylindrical elongated body, with a cap 21 attached to the upper end and the lower part buried and erected on the installation surface G. In the protective fence 1 of this embodiment, four support column bodies 2 are arranged at equal intervals. The beam-like body 6 is a cylindrical elongated body, and three are arranged at intervals in the vertical direction. In front of each support column body 2, a bracket 7 is fixed by a bolt B1 and a nut N that penetrate in the front-rear direction, and each beam-like body 6 is supported by the bracket 7 and attached to the support column body 2.

[0016] FIG. 3 is a front view showing an enlarged attachment portion of the beam-like body 6 in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3. At the end of each beam-like body 6, a connecting fitting 8 is inserted and attached inside. The connecting fitting 8 is a cylindrical shape with an outer shape smaller than the inner diameter of the beam-like body 6, and is fixed inside the beam-like body 6 by a bolt B2 and a nut N that penetrate the beam-like body 6 in the vertical direction. Also, the connecting fitting 8 is fixed to the bracket 7 by a bolt B3 and a nut N that penetrate the bracket 7 in the vertical direction, and each beam-like body 6 connects its end to the bracket 7 by the connecting fitting 8. The support column body 2 is made of steel in this embodiment, but any metal material such as stainless steel or aluminum can be selected and applied as long as it can preferably bend when receiving the impact caused by the collision of a vehicle.

[0017] A core material 4 is arranged inside each support column body 2. FIG. 5 is a front view showing the core material 4 in FIG. 1, and FIG. 6 is a plan view of FIG. 5. The core material 4 comprises a roughly square rectangular tubular body 41 with rounded corners in a plan view, and reinforcing members 42 provided on the flat portions 41a of the four sides of the rectangular tubular body 41. The reinforcing members 42 are formed by bending a long steel plate into a roughly L-shape in a plan view, and are fixed to the rectangular tubular body 41 by welding, with a length from the upper end to the lower end of the rectangular tubular body 41. The core material 4 is made of steel, similar to the main support column 2, but any metal material such as stainless steel or aluminum can be selected and applied, as long as it can withstand the impact of a vehicle collision and bend appropriately.

[0018] As shown in Figures 1 and 2, the core material 4 is housed inside the support column body 2, with its lower end positioned at the lowest point of the support column body 2 and its upper end extending approximately two-thirds of the way up from the lowest point of the support column body 2. This can be any height below the bracket 7, but it must be at a height greater than the height at which a vehicle collision is anticipated. In other words, the core material 4 is positioned inside the main support column 2, always near the installation surface G. Figure 7 is a cross-sectional view AA of Figure 2, showing the core material 4 of Figure 5 housed in the support column body 2.

[0019] The guardrail 1, with its support column body 2 and beam-like body 6, primarily protects pedestrians and others located behind vehicles traveling in front of it. Furthermore, in the event of a strong collision, the support column body 2 and core material 4 absorb the impact of the collision, and by bending and deforming near the installation surface G and at the height of the vehicle's collision, they absorb the impact and effectively stop the vehicle.

[0020] Figures 8 and 9 are cross-sectional views showing another embodiment of the core material 4 of the protective fence 1 according to the present invention. Similar to Figure 7, Figures 8 and 9 depict a cross-section near the installation surface G of the support post body 2 with the core material 4 housed inside. Regarding the core material 4 shown in Figure 8, only the differences from the core material 4 shown in Figures 1 to 7 will be explained. In Figure 8(a), the core material 4 has a horizontal cross-sectional shape of the reinforcing member 42 that is arc-shaped (semicircular) rather than L-shaped. In Figure 8(b), the core material 4 has a horizontal cross-sectional shape of the reinforcing member 42 that is U-shaped rather than L-shaped. The reinforcing member 42 of the core material 4 in the present invention can be any shape as long as it is a shape that can suitably absorb the impact of a collision with a vehicle or the like and stop the vehicle. However, in order to produce the same effect regardless of the direction from which the vehicle or the like collides, it is preferable that all of the reinforcing members 42 have the same shape. Also, for the rectangular tubular body 41, it is desirable that it be a regular polygon shape for the same reason.

[0021] Figure 9 is a plan view showing yet another embodiment of the core material 4 of the protective fence 1 according to the present invention. In Figure 9(a), the core material 4 has a rectangular tubular body 41 with a regular hexagonal cross-section in plan view, while in Figure 9(b), the core material 4 has a rectangular tubular body 41 with a regular octagonal cross-section in plan view. In both embodiments (a) and (b), reinforcing members 42, which are roughly U-shaped in plan view, are provided on all the flat surfaces of the outer circumference of the rectangular tubular body 41.

[0022] Although the protective fence according to the present invention has been described above based on embodiments, the present invention is not limited to the embodiments described above. Various modifications that a person skilled in the art can conceive of without departing from the spirit of the present invention are also included within the scope of the present invention.

[0023] According to the present invention, the structure comprises support columns erected at intervals and beam-like bodies installed between each of these support columns. The support columns are formed in a substantially cylindrical shape, a core material is placed inside each support column, and the core material has a rectangular tubular shape, with reinforcing members placed on the flat portion of the outer surface of this rectangular tubular shape. Therefore, even when a vehicle collides at a considerable speed, the support columns and core material bend to suitably absorb the impact, and the same effect can be obtained for collisions from any angle. [Explanation of symbols]

[0024] 1 Protective fence 2. Main support column 21 caps 4 Core material 41 Square tubular body 42 Reinforcement members 6 Beam-like body 7 Brackets 8 Connecting fittings

Claims

1. A fence comprising support posts erected at intervals and beam-like bodies installed between each of the support posts, The support column body is roughly cylindrical in shape, and a core material is placed inside the support column body. The core material has a rectangular tubular shape, and a reinforcing member is provided on the flat portion of the outer surface of the rectangular tubular shape. The protective fence is characterized in that the reinforcing member is formed to fit between the corners at both ends of the flat portion, and the corners and the reinforcing member are positioned so as not to overlap with each other in the radial direction of the support column body.

2. The protective fence according to claim 1, characterized in that the reinforcing member is arranged on all of the flat portions of the outer circumferential surface of the core material.

3. The protective fence according to claim 1, characterized in that the rectangular tubular body is a tubular body having a regular polygonal cross-sectional shape.

4. The protective fence according to claims 1 to 3, characterized in that the reinforcing member is arranged over substantially the entire length of the rectangular tubular body.

5. A fence comprising support posts erected at intervals and beam-like bodies installed between each of the support posts, The support column body is roughly cylindrical in shape, and a core material is placed inside the support column body. The core material has a rectangular tubular shape, and a reinforcing member is provided on the flat portion of the outer surface of the rectangular tubular shape. The reinforcing member is formed to fit between the corners at both ends of the flat portion, The reinforcing member is a protective fence characterized by being formed by bending a long, plate-like body.

Images