JPH0128085Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a road structure, and particularly to a road structure suitable for roadways in areas where snowfall is unavoidable or snowfall is expected.

(Prior Art) Conventionally, snowplows have been used to remove snow from roadways, which can blow the collected snow away. However, when removing snow from roads with grade-separated intersections, especially roads on the side of overpasses, the snow blown away by snowplows falls on the roads that pass under the overpasses. During snow removal, there was the inconvenience of snow falling on buildings. Furthermore, when removing snow from expressways, the sound insulating plates placed on both sides of the road sometimes become an obstacle, making it impossible to blow away the snow.

In order to eliminate the adverse effects caused by the use of snowplows, there are roads in which snow is melted by pouring water or hot water onto the road surface. However, if the supply of water or hot water is stopped after the snow melts, there is a problem that the water or hot water remaining on the road surface may freeze on the road surface.

(Purpose) Therefore, the purpose of the present invention is to solve the above-mentioned conventional problems.

(Structure) The road structure according to the present invention includes a roadbed, a surface layer disposed on the roadbed, and a passage or a space for a heating medium or a heat generating space provided between the roadbed and the surface layer or in the surface layer. The surface layer is comprised of a large number of particles of elastic material bonded with continuous gaps.

(Effects) According to the present invention, the large number of granules of the elastic material constituting the surface layer are bonded with continuous gaps, so that the heat dissipated from the heating medium or the heating element or the fluidity is generated. In the case of the heating medium, it is guided to the surface of the surface layer, that is, the road surface, through the gap. This allows snow that has accumulated on the surface to melt.

Furthermore, since the voids between the elastic materials can be used as drainage channels for melted snow, it is possible to quickly remove melted snow that causes road surfaces to freeze. Furthermore, since the large number of particles is heated by the heat or heating medium moving through the voids, the heat of the heated particles can prevent the road surface from freezing while the melted snow water is being removed. can. Furthermore, even if the road surface freezes, since the voids are open to the surface of the surface layer, the frozen layer is crushed by the elastic deformation of the granules when the vehicle passes over the surface layer. be done.

(Embodiments) The features of the present invention will become clearer from the following description of the illustrated embodiments.

As shown in FIGS. 1 to 3, the road structure according to the present invention includes a hard roadbed 12 such as a slab formed on a roadbed 10 and a surface layer 14 disposed on the roadbed. Although the illustrated road structure is applied to a normal roadway, for example, on a road with a grade-separated intersection, the roadbed 10 may not be provided and the roadbed 12 may be placed directly on a structural member of an overpass.

The surface layer consists of a large number of granules 16 of an elastic material such as rubber chips or cork chips, and a minimum amount of cold-setting resin necessary to bond these granules, and the large number of granules 16 include: The granules 16 are adhesively bonded with continuous gaps 18 between them to allow air to flow as a fluid heating medium or heat conduction medium, which will be described later, and to allow individual granules 16 to be elastically deformed. ing. The surface of the surface layer 14, that is, the road surface, is uneven with a large number of particles 16. The surface layer 14 is formed by appropriately selecting the particle size, hardness, etc. of the granules 16 constituting the surface layer.

Between the roadbed 12 and the surface layer 14, hot water, warm air,
A passage 20 for a fluid heating medium such as steam is provided. The passage 20 shown in FIG. 1 is defined by a tube 22 embedded in the roadbed 12 for the majority of its lower portion. A plurality of holes 22a opening upward are provided in the tube 22 at intervals in the longitudinal direction, and when the pressurized heating medium flows inside the tube 22, the heating medium passes through the plurality of holes. From 22a to surface layer 1
4, and reaches the road surface through gaps 18 between particles 16. The heating medium that reaches the road surface can melt the snow accumulated on the surface layer 14.

By the way, while the heating medium is being supplied, melted snow water can be drained from, for example, a groove (not shown) provided on the shoulder of the road. However, after the snow has been melted and the supply of the heating medium has been stopped, it is necessary to remove the water remaining on the road surface as soon as possible to prevent the road surface from freezing.

In the present invention, the water remaining on the road surface is
8 and flows toward the roadbed 12, allowing rapid drainage. For this drainage, for example, as shown by the chain line in FIG. 1, a drainage groove 24 that opens upward may be provided in the roadbed 12.

In addition, the granules 16 are arranged so that the heating medium is in the voids 18.
During the removal of melted snow water, the heat contained in the granules slows down the freezing of the water remaining on the road surface, even when the outside air temperature is very low. This allows almost complete drainage of said water. Further, even if the water that wets the surface of the granular material 16 on the road surface freezes, the thin ice is crushed by elastic deformation of each granular material when the vehicle passes over the road surface.

The heating medium can also be water at room temperature. When the outside air temperature is extremely low, the temperature of the water will be high relative to the outside air temperature. Therefore, when the water flows, it also warms the granules 16 that have been cooled by the outside air that has entered the voids 18.

It has been pointed out that when a vehicle is equipped with spiked tires and the road surface is made of asphalt or concrete, the scraped asphalt or concrete dust may have a negative effect on the human body. However, according to the road structure of the present invention, when the spikes press the granules 16, the granules sink into the voids 18 and undergo elastic deformation, so the granules are not scraped off by the spikes. No dust is generated as mentioned above.

Instead of arranging the tubes 22, the passages 20 may simply be defined by a number of particles forming the surface layer 14, as shown in FIG. Also,
As shown in FIG.
The passage 20 for the heating medium may be formed by forming a plurality of grooves 26 similar to the above and covering the grooves with a plate member 28. In this example, holes 28a similar to the holes 22a are provided in the plate member 28 at intervals in the longitudinal direction. Furthermore, a tube as described above may be placed within the groove 26 without covering it with the plate member 28 (not shown).

The heating medium may be non-flowing, for example, a metal block (not shown) with good thermal conductivity, and in this case, the heating medium may be formed in the surface layer 14 or between the surface layer and the roadbed 12.
A space (not shown) for arranging the metal lump is provided between the metal lump and the metal lump, and the metal lump is heated using an appropriate means. Further, as shown in FIG. 4, heating wires 30 may be arranged between the surface layer 14 and the roadbed 12.

In roads that include non-flowing materials or heating elements such as heating wires 30, the heat emitted from them is conducted through the air gap 18, and the surface layer 14
Melt the snow on top. During this time, the melted snow water gradually passes through the gaps 18 and reaches the roadbed 12, so the means for heating the non-flowing material and the heating wire 30
must be able to generate enough heat to not be completely cooled by the water flowing down the gap 18. Further, the individual granules 16 are heated in the same manner as described above.

The surface layer 14 is constructed on-site by spreading a mixture of a large number of granules and the adhesive on the roadbed 12, and
Alternatively, it can be formed by factory production in which the mixture is heated and pressurized to form it into a plate shape.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are cross-sectional views showing the road structure according to the present invention, respectively. 12: Roadbed, 14: Surface layer, 16: Granules, 1
8: void, 20: passage, 22: tube, 30: heating wire.

Claims (1)

[Claims for Utility Model Registration] (1) A roadbed, a surface layer disposed on the roadbed, and a passage or space for heating medium or heat generation provided between the roadbed and the surface layer or in the surface layer. 1. A road structure comprising a body, the surface layer comprising a plurality of particles of an elastic material bonded with continuous gaps. (2) The road structure according to claim 1 of the utility model registration claim, wherein the heating element is composed of a plurality of heating wires. (3) The road structure according to claim 1, wherein the passage is defined by a tube having a plurality of holes opening upward. (4) The road structure according to claim 1 of the utility model registration claim, wherein the heating medium passage or arrangement space is defined by the plurality of granules.