JPH0893041A - Drainage structure in drainage pavement - Google Patents

Abstract

PURPOSE: To prevent water from staying on a road surface or road-bed by laying a water-draining paving material having a large rate of voids on the base layer of a road, and burying a permeation water guide member spirally at the edge of the paving material in the longitudinal direction. CONSTITUTION: A water-draining paving material 28 is laid in a certain thickness on the base layer 14 of a road and has a rate of voids of 15% or more. The water such as rainwater having permeated the facial layer 16 is shut off by the base layer 14 and moves toward the road shoulder 18 (in the longitudinal direction. Then the water is led to a draining means 26 such as a drain basin, drain pipe, etc., via a permeation water guide member 24 buried spirally along the edge in longitudinal direction of the facial layer 16 and is discharged to the outside. This allows eliminating stay of the water on the road surface or road-bed 12, suppressing drop of the bearing force of the road, and preventing occurrence of traffic accident originating from the stay of the water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for drainage pavement, and more particularly to a drainage structure for a road having a surface layer formed by a drainage pavement material.

[0002]

2. Description of the Related Art Generally, most of roads in urban areas are constructed as paved roads so that people and vehicles can easily come and go.

In such a paved road, the surface layer that directly supports the vehicle load is usually formed of a material having a high density such as asphalt or cement concrete. By doing this, durability against abrasion and peeling by the tire is maintained and road surface water generated by rainfall or snow melting is prevented from entering the roadbed subgrade by guiding it to the drainage means using a cross slope. are doing.

By the way, on a road having a surface layer made of a material having a high density such as asphalt or cement concrete, it is unavoidable that a certain amount of surface water remains, and a rut of a vehicle or a locally missing portion. It is unavoidable that this road surface water accumulates. The remaining or accumulated road surface water not only causes hydroplaning phenomenon, slip, water splash and smoking phenomenon, but also these phenomena themselves cause vehicle driving errors and cause traffic accidents. It is said that there are many things.

Therefore, recently, a drainage pavement has been proposed in which a road surface layer is formed of a material having a large porosity and rainwater or the like is allowed to soak into the surface layer so that road surface water is not generated. Various studies are being conducted toward this end.

Further, as a means for draining the permeated water that has penetrated into the surface layer of this drainage pavement, for example, it is blocked by a base layer roadbed located under the surface layer (drainage pavement) and made of a material with high density. U to be drained to the road shoulder as it is or equipped with water permeability arranged along the road shoulder
Methods such as draining through the groove are adopted. However, in many urban roads, highways, and highways where curbs and shoulders are made of concrete structures, the infiltrated water that has penetrated from the surface layer accumulates on the base layer roadbed and roadbed portion, and this accumulated water When the road reaches the surface, not only the original function of the drainage pavement is lost, but also the bearing capacity of the basement roadbed and subgrade is reduced and the durability of the road itself is impaired. Was pointed out.

[0007]

Therefore, in the present invention, a surface layer is formed by laying a drainage pavement material with a predetermined thickness on a base layer of a road, and the drainage surface layer is formed along the edge in the longitudinal direction. And embed a spiral shaped seepage water guide member,
Furthermore, by adopting a configuration in which the permeated water guide member is connected to a drainage means such as a drainage basin or drainage pipe,
The permeated water that has permeated from the surface layer is quickly and surely drained.

In this case, the permeated water guide member is embedded in the transverse direction of the drainage surface layer portion, or formed by a sheet or a coating along the embedded bottom portion of the permeated water guide member disposed in the drainage surface layer portion. If a waterproof layer is provided, the permeated water can be drained more reliably, and as such a drainage pavement material, it is preferable to use an open particle size asphalt mixture having a porosity of 15% or more.

[0009]

In the present invention, the permeated water such as rainwater that has penetrated into the surface layer formed by the drainage pavement material having a large porosity is
It is blocked by the base layer and moves in the road shoulder direction (longitudinal direction), and is guided to a normal drainage box or drainage means via a spiral-shaped permeated water guide member embedded along the edge of this longitudinal direction. That is, it is discharged outside without being accumulated water.

[0010]

The preferred embodiments of the drainage structure of the drainage pavement according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, reference numeral 10 indicates a paved road portion of a road, and the paved road portion 10 is a roadbed 1.
A crushed stone or the like is laid on the surface 2, and a bituminous material is sprinkled on the surface of the crushed stone to form a base layer 14 having a tack coat.
It is basically configured by forming 6.

The base layer 14 functions to disperse the traffic load applied to the surface of the surface layer 16 to the roadbed and the roadbed together with the surface layer 16. In this embodiment, the edge portion thereof is used. 14a is set at a position separated from the side surface of the concrete road shoulder 18 by about 20 cm, and this separated portion is initially formed as the space 20.

In the space 20 formed along the longitudinal edge of the roadway portion 10, a waterproof layer 22 made of, for example, a sheet waterproof material adhered with heat-melted asphalt is formed. On the layer 22, for example,
Outer diameter is 25m using stainless steel material with wire diameter 2mm
m, pitch 6 mm, and length 5 m, the spiral water-permeable guide members 24 are arranged in series, the water-permeable guide members 24 are connected to each other, and the water-permeable guide members positioned at the ends are further connected. 24 along the roadway 10
It is connected to a drainage means 26 such as a drainage cell arranged at intervals of about m.

In this case, as the waterproof layer 22, a sheet-type waterproof material is welded while being heated, or synthetic rubber is repeatedly applied and dried to form a layer, and a rubber-melted asphalt which is heated and melted several times is used. Needless to say, it can be appropriately selected according to the situation of the site, such as being constituted by spraying an anti-adhesion material or the like on the surface after separately applying it.

Further, the water-permeable guide member 2 is provided on the waterproof layer 22.
The space 20 after the arrangement of 4 is formed as the surface layer 16 having the drainage function as described above. This surface layer 16 is
The drainage pavement material 28 is made of an open-grained asphalt mixture having a porosity of 15% or more. The drainage pavement material 28 has a large porosity, and therefore has a binder with improved adhesion to the aggregate, for example, It is formed as a surface layer 16 having a suitable drainage performance by using Tough Palt or Tough Palt Super (trade name: manufactured by Nitsubishi Chemical Industry Co., Ltd.). The surface layer 16 may be formed in upper and lower two layers and only the upper layer portion may be formed by the drainage pavement material 28.

In FIG. 1, reference numeral 30 is curb concrete provided outside the concrete road shoulder 18.

In the drainage structure of the drainage pavement according to the present invention having the above-described structure, the drainage pavement material 2 having a large porosity is used for the rainwater and the snowmelt water reaching the surface 16 (road surface).
After immersing in the surface layer 16 made of 8, it moves to the water permeable guide member 24 on the waterproof layer 22 arranged along the road shoulder 18 due to a transverse gradient or the like, and through this water permeable guide member 24, the base layer 14, the roadbed 12, or the like. Instead of staying in the pipe, it is guided to the drainage basin (drainage means 26) and quickly drained to the outside.

FIG. 3 shows an embodiment in which the water-permeable guide member 24 is also embedded in the transverse gradient direction of the roadway portion 10. In this case, seepage water such as rainwater that has penetrated into the surface layer 16 is provided. Since it can be guided to the drainage means 22 through the water-permeable guide member 24 over a wide range, it can be eliminated more quickly. In this case, it goes without saying that the waterproof layer 22 provided along the embedded bottom portion of the permeated water guide member 24 disposed on the drainage surface layer portion 16 can be omitted.

[0019]

As described above, according to the drainage structure in the drainage pavement of the present invention, since the surface layer is formed of the drainage pavement material having a large porosity, the accumulated water is generated in the surface layer (road surface). Therefore, it is possible to reliably prevent the occurrence of a traffic accident or the like caused by a phenomenon caused by accumulated water. Further, since the permeated water that has penetrated from the surface layer is guided to the drainage means such as the drainage pipe through the spiral water-permeable guide member and is discharged to the outside, no accumulated water is generated in the roadbed or the roadbed portion. It is possible to prevent a decrease in the bearing capacity of the road and maintain a predetermined durability.

Furthermore, since a water-permeable guide member formed by spirally winding a stainless steel material is used, not only can the strength against traffic load be sufficiently maintained, but also clogging is less likely to occur, so that the drainage capacity is reduced. In addition, it is easy to handle and connect to each other, and it is possible to easily deal with curved parts, so installation work can be performed very easily and construction can be facilitated and unit cost can be reduced. It has various advantages.

Although the preferred embodiment of the drainage structure in the drainage pavement according to the present invention has been described above, the present invention is not limited to this embodiment, for example, the boundary between the drainage pavement and the general pavement. Various design changes within the scope not departing from the spirit of the present invention, such as constructing a drainage structure in a portion (transverse direction), or arranging a plurality of water-permeable guide members in parallel when the amount of permeated water is large Of course, it can be done.

[Brief description of drawings]

FIG. 1 is a partial cutaway perspective view in a transverse direction showing a preferred embodiment of a drainage structure in a drainage pavement according to the present invention.

2 is a plan view of a drainage structure in the drainage pavement shown in FIG. 1. FIG.

FIG. 3 is a plan view showing another embodiment of the drainage structure in the drainage pavement according to the present invention.

[Explanation of symbols]

10 Paved road section, 12 Roadbed, 1
4 base layers, 16 surface layers, 18 shoulders,
20 space, 22 waterproof layer, 24
Water-permeable guide member, 26 drainage means, 28 drainage pavement material, 30 curb concrete,

Claims (4)

[Claims] 1. A surface layer is formed by laying a drainage paving material with a predetermined thickness on a base layer of a road, and a spiral-shaped permeated water guiding member is provided along the longitudinal edge of the drainage surface layer portion. A drainage structure in drainage pavement, wherein the drainage structure is buried and the permeated water guide member is connected to drainage means such as a drainage basin or a drainage pipe. 2. The drainage structure for drainage pavement according to claim 1, wherein the permeated water guide member is embedded also in the transverse direction of the drainage surface layer portion. 3. A waterproof layer is provided along the embedded bottom portion of the permeated water guide member arranged on the drainage surface layer portion.
Alternatively, the drainage structure in the drainage pavement according to claim 2. 4. Drainage in a drainage pavement according to any one of claims 1 to 3, which comprises using an open-grained asphalt mixture having a porosity of 15% or more as the drainage pavement material. Construction.