JP2978127B2 - Road block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block to be laid on a road surface, and more particularly to a block for preventing slippage in snow.

[0002]

2. Description of the Related Art In snowy households such as Hokkaido, an accident occurs in which pedestrians slide their feet during snowfall. Especially in urban areas, the number of pedestrians is high, and tourists from areas with little snow are also covered, so it is easy for falls to occur.

For this reason, so-called road heating is provided in urban areas (especially in downtown areas) to ensure the safety of pedestrians. This is to arrange a heating wire under the road surface in advance,
This is a system that melts snow on the road surface by the heat generated by the heating wire. Since the snow on the road melts, it is easy to walk even without winter shoes (those with irregularities on the sole), and travelers do not have to worry about walking.

[0004]

By the way, such a road heating system has an excellent function in terms of snow melting, but on the other hand, the construction cost is high, and the running cost such as electricity bill after the installation is increased. Therefore, the local government cannot freely expand the area.
With limited budget, there is a natural limit to where road heating can be laid.

Accordingly, an object of the present invention is to prevent a pedestrian from falling over by making the road surface less slippery.

[0006]

In order to achieve the above-mentioned object and to achieve the object, a road surface block according to the present invention forms a convex pattern having minute irregularities on an upper surface of a concrete block laid on a road surface, An anti-slip rubber having a substantially wavy cross section (including a V-shape and a W-shape) is provided along the substantially center of the concave groove formed by the convex pattern. Cut off at
In addition, while the upper end is disposed above the convex pattern, the concave groove communicates with the outer peripheral edge.

In some cases, the road surface block has a reinforcing bar inside, and the anti-skid rubber has its base end fitted to the reinforcing bar to support it.

[0008]

The road surface block according to the present invention forms a convex pattern on the upper surface of the concrete block laid on the road surface. During walking, the sole hits this convex surface, but the convex surface is provided with minute irregularities, so that the slip of the sole is basically prevented.

By forming the convex pattern, a concave groove is formed on the upper surface of the block. An anti-slip rubber is disposed substantially at the center of the concave groove along the groove. Since the upper end of the anti-slip rubber is positioned above the convex surface of the block, when stepped on the shoe sole, the anti-slip rubber is distorted in the direction perpendicular to the axis and, at the same time, the wavy portion on the upper surface is deformed. During snow accumulation, snow may adhere to the top of the block and the anti-slip rubber may be buried,
Due to the deformation of the rubber, the ice and snow solidified on the concave groove and the upper surface of the anti-skid rubber are crushed.

The pulverized ice and snow accumulates as water in the concave groove due to, for example, being illuminated by daylight. Therefore, the anti-slip rubber is cut off at an appropriate place, and the concave groove is communicated with the outer peripheral edge so that the water of the concave groove is sent to the gap (joint) with the adjacent block.

Although this road surface block is arranged on a sidewalk, there are cases where a snow-removing vehicle rides on the sidewalk or a reinforcing steel bar is arranged inside in order to enable application to a pedestrian crossing. In this case, when the base end portion of the anti-slip rubber is engaged (fitted) with the reinforcing bar, the installation of the anti-slip rubber is facilitated, and the anti-slipping rubber can be reliably prevented from falling off.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show an example of a road block according to the present invention. The road surface block 10 has a plurality of convex patterns 15, 16, 17 formed on the upper surface of a block main body 11 having a substantially square planar shape, and includes concave grooves 21, 22 formed by the convex patterns 15 to 17. The anti-slip rubber 3 is provided substantially at the center of the concave grooves 21 and 22.
0 is extended.

The convex patterns 15 to 17 form minute irregularities on the surface. Since the minute irregularities are for enhancing the anti-slip effect, it is desirable that the tips of the irregularities have a rectangular or triangular shape. Even if a substantially triangular wave line is drawn, there is an anti-slip effect. Therefore, it is not always necessary to provide minute irregularities on the entire surface of the convex patterns 15 to 17.

The concave grooves 21 and 22 do not need to be provided with minute unevenness. This is because the sole does not hit this part.
Reference numerals 25 and 26 denote concave grooves 21 and 22 in block body 1.
1 is a drain groove for communicating with the outer peripheral edge of the first groove. The anti-slip rubber 30 may be provided in the drain grooves 25 and 26. However, the anti-slip rubber is preferably not provided in this portion because the drain efficiency is deteriorated.

The anti-slip rubber 30 has an upper end 31 having a corrugated shape, for example, a substantially V-shaped cross section, and the upper end 31 is positioned above the convex patterns 15 to 17. Symbol 32 is V
It is a slope formed in a character shape.

The block body 11 has reinforcing bars 41, 4 inside.
2 is provided. As shown in FIG. 4, the reinforcing bars 41 and 42 also run below the anti-skid rubber 30 because they also serve as support members for the anti-skid rubber 30. FIG. 4 shows an example of the reinforcing bars 41 and 42 provided in the block. The reinforcing bars 41 and 42 are desirably set to have substantially the same length as the block so as to reinforce the outer peripheral edge of the block main body 11. The anti-slip rubber 30 has a substantially cylindrical engaging portion 36 at its base end, and is fixed by fitting the engaging portion 36 to the reinforcing bars 41 and 42.

Incidentally, the dimensions of each part are shown, for example, the lateral dimension W1 of the block body 11 is 30 cm, and the height H of the block is
1 is 60 mm, and the height H2 of the convex patterns 15 to 17 is 5
mm, the protrusion H3 of the anti-skid rubber 30 is 5 mm, the width W2 of the anti-skid rubber 30 is 10 mm, and the width W of the concave grooves 21 and 22 is W.
3 is 30 mm. Also, the separation distance L of the anti-skid rubber 30
1 and L2 are, for example, 120 mm and 60 mm, respectively. Of course, it is necessary to appropriately change the design of the block shape and the convex pattern depending on the application place and the like, and the numerical values are not necessarily limited to these numerical values.

When the road block 10 is stepped on with a shoe sole,
Anti-slip rubber at two places on the sole of the shoe when stepping from any direction
At the same time as 0 abuts, the other shoe soles abut against the minute irregularities of the convex patterns 15 to 17, so that the slip of the shoe sole is reliably suppressed.

Further, the anti-slip rubber 30 stepped on the sole of the shoe is deformed and deformed, so that ice and snow clogging the V-shaped slope 32 is crushed, and snow clogging the concave grooves 21 and 22 is also finely crushed. The finely crushed ice and snow melts due to daylight even when the outside air temperature is minus 2 to 3 ° C. At that time, the snowmelt water is guided to the outer peripheral edge of the block according to the drain grooves 25 and 26 at the four corners of the block. Is absorbed by the gap between the adjacent blocks (grain ground) and returns to the ground.

That is, the road surface block 10 prevents the shoe sole from slipping by the fine irregularities of the convex patterns 15 to 17 and the anti-skid rubber, and at the same time, crushes the frozen ice and snow attached to the block surface, and removes the snowmelt water from the sand joint. It has a function of returning to the soil from the ground.

Further, since the reinforcing bars 41 and 42 are provided to increase the strength of the block, there is no fear that the snow-removing vehicle may be damaged when the vehicle passes over the block or when the block is laid on the pedestrian crossing (roadway). In addition, the provision of the reinforcing bars 41 and 42 facilitates the provision of the anti-slip rubber 30 and also reliably prevents breakage and detachment due to the repeatedly applied load.

FIG. 5 shows an example of molding equipment for the present block. In order to make the road surface block 10, first, a urethane mat 51 having irregularities is laid on a mold 50 having a predetermined dimension.
The urethane mat 51 has minute concaves and convexes formed on the concave surface 52, and the convex surface 53 is formed smoothly. A groove 54 is formed at the center of the convex surface 53, and the groove 54
0 is fitted. After the anti-slip rubber 30 is fixed to the groove 54, the reinforcing bar 41 (42) is fitted to the engaging portion 36 and fixed. Then, concrete 55 is poured from above the urethane mat 51 to which the release agent has been applied. After curing for a predetermined time, the mold 50 and the urethane mat 51 are released to obtain a final product. The reinforcing bar 41 (42) has a diameter of, for example, 6 mm.

The road block according to the present invention can be freely designed by changing the uneven pattern of the urethane mat 51 by changing the uneven pattern. The number (the number) of the concave grooves and the length of the anti-slip block are not limited. In other words, as long as at least one anti-skid rubber abuts on the sole when stepping on the sole, and snowmelt water flows into the gap (joint) with the adjacent block (the concave groove communicates with it), the surface is uneven. The pattern is not limited to the example pattern. Therefore, it is not always necessary to use a polygonal or circular similar convex pattern, and a random convex pattern may be used. However, the anti-slip rubber should have as little wear as possible.
It is desirable to use PT rubber, and since it is advantageous in terms of cost to use a continuously molded product cut to a predetermined size, it is more advantageous that the concave groove be straight in consideration of the block cost. It is. It should be noted that the EPT rubber can be colored in any color, and it is possible to provide a colorful block. Also, since there is little risk of discoloration,
It is the most practical material.

The road block according to the present invention does not necessarily require a reinforcing steel bar to be applied to a sidewalk. In this case, falling off can be prevented by embedding in concrete with the base end of the anti-skid rubber as a flange wide.

FIG. 6 shows another embodiment of the road block according to the present invention. This road surface block is obtained by changing the upper shape of the anti-skid rubber 60, increasing the anti-slipping property by forming the upper surface 62 as a wide corrugated pattern, and providing a hollow portion 65 inside a rubber material having a substantially square cross section, It is designed to increase distortion deformation when stepped on. Since the upper part is entirely rectangular in cross section, there is a concern about problems such as peeling if the deflection is large. Therefore, a projecting line 6 is provided on the lower end surface of the upper rubber material.
7 and the projecting line 67 is buried in concrete. As a result of embedding the lower end, even if the upper part bends left and right, the thin embedded part 63 having a rectangular cross section is not subjected to distortion deformation,
Therefore, there is no fear of cutting (shearing). Reference numeral 66 denotes an engaging portion of the reinforcing bar 41. The other parts are the same as those of the above-described embodiment, and thus the same reference numerals are given and the duplicated explanation will be omitted.

In this road block, the upper surface area is increased by making the upper part of the anti-skid rubber 60 a substantially rectangular line, and the corrugated pattern is formed on the upper surface 62, so that the anti-slip effect is further enhanced. In addition, since hollow part 65 was provided inside,
The flexural deformation when stepped on from above is sufficiently large, and is effective in crushing ice and snow.

[0027]

As described above, according to the road surface block according to the present invention, the road surface itself becomes less slippery, and the frozen ice and snow melts and is discharged into the soil from the gap between the joints. Can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a road block according to the present invention.

FIG. 2 is a sectional view of the road block shown in FIG. 1;

FIG. 3 is a plan view of the road block shown in FIG. 1;

FIG. 4 is a plan view showing the entire reinforcing bar shown in FIG. 1;

FIG. 5 is a view showing an example of forming the block shown in FIG. 1;

FIG. 6 is a sectional view showing another embodiment of the road block according to the present invention.

[Explanation of symbols]

 10, 60 Road surface block 11 Block body 15-17 Convex pattern 21, 22 Concave groove 25, 26 Drain groove 30 Skidproof rubber 31 Upper end of slipproof rubber 32 V-shaped slope 36, 66 Engagement part 41, 42 Reinforcement 62 Upper surface 63 Embedded part 65 Hollow part 67 Projection line

Claims (3)

(57) [Claims] 1. A concrete block to be laid on a road surface, wherein a convex pattern having minute irregularities is formed on an upper surface thereof, and an upper surface of the concrete block has a cross section substantially along a substantially center of a concave groove formed by the convex pattern. An anti-slip rubber having a corrugated shape is provided, and the anti-slip rubber is cut off at an appropriate location, and is disposed so that an upper end is located above the convex pattern, while the concave groove is an outer peripheral edge. A road block characterized by communication with 2. The road surface block according to claim 1, wherein the concrete block has a reinforcing bar inside, and the anti-slip rubber has a base end fitted to the reinforcing bar and supported. 3. The method according to claim 2, wherein the convex pattern is substantially rectangular in a plane.
The road surface block according to claim 1 or 2, wherein a straight concave groove is formed.