JP-7855355-B2 - protective fence

Inventors

• 上原 健嗣
• 井上 仁
• 吉村 真一

Assignees

• 積水樹脂株式会社

Dates

Publication Date

20260508

Application Date

20220120

Claims (5)

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 members are 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 along 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 .

Description

This invention primarily relates to protective barriers designed to prevent vehicle entry. Traditionally, protective fences have been installed at the boundaries between sidewalks and roadways, and between roads and the premises of parks, public facilities, commercial facilities, etc. The installation of these protective fences prevents vehicles such as cars and trucks from crossing the boundary and also protects pedestrians inside the boundary (sidewalks, parks, etc.) in the event of an accident where a vehicle collides with the protective fence. Such protective barriers, with their highly rigid support columns for beams and other components, can more reliably protect pedestrians even in the event of a vehicle collision. As a protective fence with high rigidity, Patent Document 1 describes a load-bearing material for rockfall, avalanche, and landslide protection structures, in which a reinforcing body is provided inside a steel pipe. The reinforcing body comprises plate-shaped reinforcing ribs provided along the inner surface of the steel pipe in the tensile and compressive regions, respectively, and connecting members connecting these plate-shaped reinforcing ribs. Japanese Patent Publication No. 2012-026206 This is a front view showing one embodiment of a protective fence according to the present invention.This is a right side view of Figure 1.This is a front view showing an enlarged view of the mounting portion of the beam-shaped body in Figure 1.This is a cross-sectional view taken along line A-A in Figure 3.This is a front view showing the core material in Figure 1.Figure 5 is a plan view.Figure 2, section A-A, shows the core material of Figure 5 housed within the main support column.This is a plan view showing another embodiment of the core material of the protective fence according to the present invention.This is a plan view showing yet another embodiment of the core material of the protective fence according to the present invention. Embodiments of the invention will be described in detail based on the drawings. In the drawing, 1 represents a protective fence. The protective fence 1 has beam-shaped bodies 6 installed between multiple support columns 2 that are erected on the installation surface G at intervals in the horizontal direction. The support column body 2 is a long, cylindrical body with a cap 21 attached to its upper end and its lower end embedded in the ground, allowing it to stand upright on the installation surface G. In this embodiment, the protective fence 1 has four support column bodies 2 arranged at equal intervals. The beam-like body 6 is a long, cylindrical body, and three of them are arranged with gaps between them in the vertical direction. A bracket 7 is fixed to the front of each support column body 2 by a bolt B1 and nut N that penetrates in the front-to-back direction, and each beam-shaped body 6 is attached to the support column body 2 by being supported by the bracket 7. Figure 3 is an enlarged front view showing the mounting portion of the beam-shaped body 6 in Figure 1, and Figure 4 is a cross-sectional view taken along line A-A in Figure 3. A connecting fitting 8 is inserted into the inside of each beam-shaped body 6. The connecting fitting 8 is cylindrical in shape with an outer diameter smaller than the inner diameter of the beam-shaped body 6, and is fixed to the inside of the beam-shaped body 6 by a bolt B2 and nut N that penetrates the beam-shaped body 6 in the vertical direction. Furthermore, the connecting fitting 8 is fixed to the bracket 7 by bolts B3 and nuts N that pass through the bracket 7 in the vertical direction, and each beam-shaped body 6 has its end connected to the bracket 7 by the connecting fitting 8. In this embodiment, the support column body 2 is made of steel, 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. A core material 4 is placed inside each support column body 2. Figure 5 is a front view showing the core material 4 in Figure 1, and Figure 6 is a plan view of Figure 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. 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