JPH093809A - Stone for road edge - Google Patents

Abstract

PURPOSE: To use a recycle raw material and absorb thermal expansion produced by cold and hot weather so as to prevent warping and protect replacement work without any operational failure. CONSTITUTION: This road edge stone comprises an edge stone main body 1 which is extended in one direction so that it may be installed along a traffic lane of a road and a through hole 2 bored at least on both ends. The edge stone main body 1 comprises a core 11 and a skin area 12 which covers the surface of the core. The through hole 2 forms a long hole extending in the longitudinal direction and allows a fixing anchor bolt 3 to be inserted into the through hole 2. A recycle material can be used for the core area 11 whose outward appearance is not exposed. If it ranges within a play area of the long hole, it is possible to absorb pitch displacement between the through hole 2 and an anchor nut and protect displacement without causing any trouble.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road curb installed along a lane of a road for separating the center of a road or separating lanes.

[0002]

2. Description of the Related Art Conventionally, concrete blocks containing reinforcing bars are generally used most as road curbs, but since the weight of concrete road curbs is 30 kg or more, it is difficult to carry and construct. It requires labor, is a heavy burden on the construction workers, and is difficult to reuse when it is removed, which is a problem as industrial waste. In particular, when using these concrete road curbs when dividing a provisional two-lane for construction of a highway, usually one construction section is a few
Since it reached 0 km, the road curb used for it also became large in quantity, which was extremely heavy for the construction workers.

[0003]

Therefore, in recent years, a road curb obtained by molding a synthetic resin such as polyethylene has also been used. This resin road curb has through holes formed at both ends of the curb body, and anchor bolts are inserted through the through holes and screwed into anchor nuts on the road surface to be fixed to the road surface. However, the synthetic resin used for this road curb is not a resin that can be used for any purpose, and considering the appearance of the road from the viewpoint of improving the road landscape, it is difficult to obtain clear colors and good surface conditions for recycling (recycle). ) Since the raw material cannot be used and the virgin (unused) raw material has to be used, the cost is higher than that of concrete. In addition, the road curb made of resin has a large thermal expansion due to cold and heat and may be deformed by warping.Therefore, when replacing another road curb, the pitch of the through holes at both ends and the corresponding anchor nuts on the road surface may be misaligned. There was a case where the anchor bolts could not be screwed onto the anchor nuts because they did not match, which hindered replacement work.

Therefore, the present invention solves the above problems,
The purpose of the present invention is to provide a road curb that can be used as a recycled material, that can absorb the thermal expansion due to cold and warm to prevent warpage, and that does not cause any hindrance during replacement work.

[0005]

In order to achieve the above object, the present invention has the following arrangement. That is, the road curb according to the present invention has a curb main body elongated in one direction so as to be installed along the lane of the road, and through holes formed at least at both ends thereof, and the curb main body is a core. The through hole is a long hole in the longitudinal direction and an anchor bolt for fixing is inserted into the through hole.

[0006]

According to the road curb according to the present invention, the curb body is composed of the core portion and the skin portion covering the surface thereof, the core portion is not exposed to the appearance, and the skin portion is exposed to the appearance. If the recycled material is used for the part and the virgin material is used for the skin, the recycled material can be used, the appearance is not deteriorated, and a clear color and a good surface state can be obtained.

Further, since the through-holes formed at both ends of the curb body are long holes in the longitudinal direction, even if there is a pitch shift due to thermal expansion due to cold and warm, the play of the long holes is increased. Within the range, the thermal expansion and the like are absorbed to prevent warpage, and the anchor bolt cannot be screwed onto the anchor nut even during the replacement work, which does not hinder the replacement work.

[0008]

Embodiments of the present invention will now be specifically described with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of the road curb of the present invention, FIG. 2 is a perspective view thereof, and FIG. 3 is a sectional view showing a state where the embodiment of FIG. 1 is installed on a road surface.

1 to 3, a road curb of this embodiment is a curb main body 1 having a trapezoidal cross section which is elongated in one direction so as to be installed along a lane of a road, and at least the curb main body 1. The through holes 2 are formed at both ends.

The curb body 1 is composed of a core portion 11 and a skin portion 12 covering the surface thereof. The material of the curb body 1 is not particularly limited, but considering that the core portion 11 is not exposed to the appearance and the skin portion 12 is exposed to the appearance, the core portion 11 is made of polyethylene, polypropylene, or the like. Using synthetic resin recycled raw material, skin part 1
It is preferable to use a virgin raw material of synthetic resin such as these for 2 in terms of cost, but the core part 11 and the skin part 12
Different or the same virgin raw material may be used for both.

When the virgin raw material is used for both the core portion 11 and the skin portion 12, it is preferable that the core portion 11 uses the cheapest raw material in order to reduce the cost. Alternatively, the core portion 11 may be made of a material other than synthetic resin, for example, concrete, and the surface of the concrete may be covered with the skin portion 12 made of synthetic resin. Further, an elastic material such as rubber may be used for the core portion 11.

Further, although the curb body 1 has a trapezoidal cross section in this embodiment in consideration of riding of the vehicle,
It may have another shape such as a rectangular shape, or may have a solid shape or a shape in which the back side is thinned. In this embodiment, the size of the curb body 1 is 1000 m in length.
m, height 80 mm, width 200 mm.
Further, a retro-reflecting material or a road tack which is irradiated and reflected by the headlight of the vehicle may be appropriately attached to the upper surface of the curb body 1, so that in this embodiment, the attachment hole 13 for the road tack is provided on the upper surface. It is provided, but need not be provided.

Through holes 2 formed at both ends of the curb body 1
Is an elongated hole in the longitudinal direction in order to absorb thermal expansion due to cold and warm and pitch deviation in the manufacturing stage, and an anchor bolt 3 inserted from the through hole 2 of the elongated hole is attached to a road surface 4 with an anchor nut 5. It is designed to be screwed on. Considering the strength, the anchor bolt 3 is M
An anchor nut 5 of around 24 is preferably used, and the anchor nut 5 is formed of an aluminum die cast which is easy to form.

Next, a method for constructing the road curb of the present invention will be described. First, when a road curb is newly attached, the anchor bolts 3 are respectively inserted from the through holes 2 at both ends of the curb body 1 and the anchor nuts 5 are screwed to the back surface in advance. On the other hand, a fixing hole 41 into which the anchor nut 5 is to be inserted is previously formed in the road surface 4 to be constructed. Next, the curb body 1 may be brought into contact with the road surface 4, the anchor nuts 5 may be inserted into the fixing holes 41, respectively, and the anchor nuts 5 may be fixed to the road surface 4 with an adhesive or cement.

When replacing an already installed road curb due to deterioration, etc., the anchor bolt 3 is loosened to remove the deteriorated road curb, and then a new road curb is brought into contact with the road surface 4, and the anchor bolt 3 May be screwed from the through hole 2 to the anchor nut 5 on the road surface 4. In this case, since the through holes 2 are elongated in the longitudinal direction, even if the pitch of the through holes 2 and the pitch of the anchor nuts 5 are deviated within the play of the elongated holes, the through holes 2 are not warmed due to the cold weather. Even if the pitch is deviated, the anchor bolt 3 cannot be screwed onto the anchor nut 5 on the road surface 4.

[0017]

According to the road curb according to the present invention, since the curb body is composed of the core portion and the skin portion covering the surface thereof, the core portion is not exposed to the appearance, and the skin portion is exposed to the appearance. For example, if a recycled raw material is used for the core portion and a virgin raw material is used for the skin portion, the recycled raw material can be used, the appearance is not deteriorated, and a clear color and a good surface state can be obtained.

Further, since the through holes formed at both ends of the curb body are elongated holes in the longitudinal direction, even if the pitch is deviated due to thermal expansion due to cold and warm, the play of the elongated holes is increased. Within the range, the deviation can be absorbed to prevent warping, and the anchor bolt cannot be screwed onto the anchor nut even during the replacement work, which does not hinder the replacement work.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a road curb of the present invention.

FIG. 2 is a perspective view of FIG.

FIG. 3 is a cross-sectional view showing a state where the embodiment of FIG. 1 is installed on a road surface.

[Explanation of symbols]

 1 Curb body 11 Core part 12 Skin part 2 Through hole 3 Anchor bolt 4 Road surface 41 Fixing hole 5 Anchor nut

Claims (1)

[Claims] 1. A curb body having a curb main body elongated in one direction so as to be installed along a lane of a road, and through holes formed at least at both ends thereof, wherein the curb main body has a core portion and a surface thereof. A road curb characterized in that the through hole is formed in a longitudinal direction and an anchor bolt for fixing is inserted into the through hole.