JPH073710A - Road surface layer material - Google Patents

Abstract

PURPOSE:To prevent a slipping accident by way of deforming and breaking frozen ice on the road surface in accordance with existence of a heterogeneous member by a load of a vehicle and a pedestrian by burying the heterogeneous member different from a parent material in hardness in the parent material of rubber and others in a striped shape and a dotted shape. CONSTITUTION:On a parent material 1 made of an elastic material such as rubber and synthetic resin, a heterogeneous member 2 different from the parent material 1 in hardness is buried in a striped shape and a dotted shape with specified intervals. In the case when ice is frozen on the road surface, a load of a car and a pedestrian is applied from above the ice and a deflection amount of a road surface material 3 becomes not uniform by the heterogeneous member 2, and the ice is deformed and broken. Consequently, even at the time when a non-spike tire installed car passes, the ice frozen on the road surface is constantly broken into ice blocks and it is possible for the car and the pedestrian to safely travel and to walk on the road surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface material which may slip due to freezing.

[0002]

2. Description of the Related Art A vehicle running on a frozen road surface has a non-slip chain wound around a tire or a spiked tire in order to prevent slipping during running or braking. However, the use of spiked tires is prohibited because it causes dust pollution, and snow tires and studless tires have been used instead.

Also, many people walking on a pedestrian crossing likewise slip and get injured. Therefore, as measures on the road surface to prevent slipping, a method of burying a heating element in the road to melt snow and ice, a method of preventing freezing by constantly flowing groundwater on the road surface, and a cut groove on the road surface There is a grouping method to improve the drainage of snow and ice when it is installed.

[0004]

However, according to the above-mentioned measures to prevent slippage, studless tires can be expected to be effective for running in snow, but when the road surface is completely frozen, there are more There is a problem that slips occur when driving or braking on a curve, and many accidents such as rear-end collisions and collisions occur.

In addition, since the construction cost is high and the maintenance cost is enormous, the measures to be taken on the road surface are very limited in the places where they are installed. Eventually, the frequency of snow removal work is increased to prevent freezing. It is supposed to do. However, this also has a limit in snow removal work, and freezing occurs in the early morning and at night, sometimes the road surface becomes a mirror surface like a skating rink, and there is a problem that the vehicle slips and causes an accident.

Therefore, current studless tires have no effect on icy road surfaces, and road surface countermeasures must be taken into consideration. In addition, there is a similar problem on the sidewalk.

[0007]

[Means for Solving the Problem] A base material made of an elastic material such as rubber is embedded in a stripe shape or a dot shape with a foreign material having a hardness different from that of the base material.

[0008]

With the above-described structure, the ice formed on the surface of the road surface material becomes uneven when the vehicle or pedestrian is placed on it and a load is applied to it, and the amount of deflection of the base material becomes uneven due to foreign materials. The ice will be deformed and destroyed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is an enlarged sectional view. In the figure, 1 is a base material made of an elastic material such as natural rubber, synthetic rubber or synthetic resin. Reference numeral 2 denotes a heterogeneous member having a hardness different from that of the base material 1. The hardness thereof may be large or conversely small, and may be natural rubber, synthetic rubber, synthetic resin, wood, metal, etc. But it's okay. Further, the heterogeneous member 2 may have any shape, and long members having a polygonal or circular cross section are arranged at predetermined intervals in the width direction of the base material 1, or the heterogeneous member is formed in a desired shape. A structure in which two lumps are arranged linearly or in a zigzag pattern in the width direction of the base material 1 may be used. The road surface material 3 is constituted by these.

The height and disposition interval of the foreign material 2 are closely related to the hardness and shape of the materials of the base material 1 and the foreign material 2, and the hardness is an important factor for determining the shape. Reference numeral 4 denotes an intermediate portion of the base material 1, in which a constraining material 5 such as a steel plate or a fiber is embedded in a single layer or in a laminated manner, which may not always be necessary. It is better to leave it buried because it works.

The restraint member 5 is embedded in order to prevent the compressive deformation of the base material 1 in the intermediate portion 4,
By suppressing horizontal displacement when a vertical load is applied to the road surface material 3, it is possible to prevent damage to the road surface material by controlling the propagation of load and displacement to the road surface contact surface. . This is because the road surface material 3 avoids the influence on the snow removal work on the road surface, and it is desirable that its installation level be the same as other road surface levels. Therefore, the side surface of the road surface material 3 is used as asphalt or concrete road material. I will come into contact with you. Therefore, when the same deformation as the surface portion appears at the contact portion on the side surface of the road surface material 3, repeated pressing force acts on the contact surface at the road surface, and depending on the location, the load or vibration may cause the road surface material This is because the aggregate may be peeled off and damage such as holes and steps may occur on the road surface.

Numeral 6 is a fixed portion formed at a predetermined distance on the bottom surface, which is embedded in the road surface and fixed integrally.
The shape is not limited to this, and may be any shape as long as it can be fixed. The fixing portion 6 does not necessarily have to be formed, but it is preferable that the fixing portion 6 be formed so that the installation work and the fixed state are stable.

Further, the fixing to the road surface does not have to be performed by the fixing portion 6, and although not shown, anchor bolts are embedded in the road floor at a predetermined interval and the road surface material is engaged with the anchor bolts by nuts. You may make it stop and may be comprised integrally. However, this is because the road surface material is an elastic material, and the number of elastic displacements becomes enormous considering the passage of the vehicle, and there is a possibility that the bolt and screw parts may be missing or the nut may loosen and the road surface material may be peeled off due to vibration. is there.

However, according to the fixing portion 6 which does not use the above bolt, there is no such fear. According to the above configuration, when ice is formed on the road surface material 3, when the load P is applied from above the ice 7, as shown in FIG. 4, the amount of deflection of the road surface material 3 becomes uneven due to the heterogeneous member 2, The ice on the surface will be deformed and destroyed.

As a result, even if a vehicle with non-spiked tires passes by, the ice 7 that has frozen on the road surface will always be a crushed ice block, and the same effect as when the vehicle with spiked tires has passed over the ice on the road surface is obtained. Become. Further, in the above embodiment, the heterogeneous member 2 is embedded in the base material 1. However, as shown in FIG. 5, the thickness of the base material 1 is a straight line or a chain line, or a stripe shape such as a zigzag shape or a dot shape. By partially changing to, the same effect as above can be obtained. Therefore, in this case, it is effective in the comparatively thin base material 1 in which the restraint material 5 is not arranged.

By combining the color tone of the road surface material with the color tone used on the road surface such as white or yellow, a road sign such as a pedestrian crossing or a median line can be obtained.

[0017]

According to the present invention described in detail above, a base material made of an elastic material such as rubber is embedded with different members having different hardnesses from the base material in stripes or dots so that the road surface material. When the vehicle and pedestrians rest on the surface of the ice, the load on the surface of the ice causes unevenness in the amount of deflection of the road surface material in the presence and absence of foreign materials, which causes the surface ice to deform and break. Therefore, it becomes possible to solve a slip accident of a vehicle or a pedestrian by forming ice blocks.

Further, since it does not require any external energy for crushing ice, it has an effect that it can be installed anywhere regardless of location.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment.

FIG. 2 is a side view.

FIG. 3 is an enlarged sectional view.

FIG. 4 is an explanatory diagram when a load is applied.

FIG. 5 is an enlarged cross-sectional view of another embodiment.

[Explanation of symbols]

 1 Base material 2 Load concentration part 3 Road surface material 5 Restraint material 7 Ice

Claims (1)

[Claims] 1. A road surface material, wherein a base material made of an elastic material such as rubber is embedded with different materials having different hardnesses from the base material in stripes or dots.