JP4142949B2 - Drainage structure of paved road using drain block - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage structure for a paved road using a drain block.
[0002]
[Prior art]
As a pavement technique attracting attention recently, there is a drainage pavement in which a drainage layer having a water permeability function made of a porous asphalt mixture is constructed on an impermeable layer laid on a roadbed. In this drainage pavement, rainwater penetrates inside the drainage layer and flows over the impermeable layer to be drained, so that water does not accumulate on the road surface, improving the driving safety of the vehicle, There is an advantage that engine noise and tire air pumping noise are absorbed by the internal air gap, thereby reducing traffic noise.
[0003]
In such drainage pavement, the drainage structure at the side of the road is usually a side groove pipe (drain block) having a substantially rectangular cross-sectional shape, and the side of the road is such that the upper surface coincides with the drainage layer surface of the drainage pavement. Built by burying in.
Conventionally, moisture such as rain water flowing inside the drainage layer is taken into the drainage channel inside the side groove pipe through the water guide holes formed at regular intervals on the side wall of the side groove pipe. (See Patent Document 1).
In addition, water such as rainwater flowing on the surface of the drainage layer (surface layer of drainable pavement) passes through the drainage holes formed at regular intervals on the upper wall of the side groove tube, and enters the drainage channel inside the side groove tube. (See Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent No. 2838659 (Claim 1)
[0005]
[Problems to be solved by the invention]
In the conventional side groove pipe (drain block), the water flowing inside the drainage layer is taken into the drainage channel through the small water guide holes formed at regular intervals on the side wall of the side groove pipe. Dust contained in the sewage flowing inside the drainage layer accumulates on the water guide hole, and the water guide hole is easily clogged. For this reason, in the drainage structure of a drainage paved road using a conventional gutter tube, there is a risk that the drainage function of the drainage layer will deteriorate early because water pools are likely to occur on the side of the paved road when there is a lot of rainfall. .
[0006]
Moreover, in the conventional side groove pipe (drain block), the water flowing on the surface of the drainage layer is taken into the drainage channel through small drain holes formed at regular intervals on the upper wall of the side groove pipe. The drainage holes are likely to be clogged with dust such as dead leaves or pieces of paper. For this reason, in the drainage structure of the paved road using the conventional gutter pipe, the water flowing on the surface of the drainage layer (surface layer) often cannot be effectively taken into the drainage channel, and there is an unnecessary water pool in the side of the road. It was highly likely to occur.
[0007]
In view of such a situation, the present invention allows water flowing through the drainage layer of the drainage pavement to be smoothly taken into the drainage channel without clogging, thereby preventing the drainage function of the drainage layer from being deteriorated. The purpose is to provide a drainage structure for paved roads.
The second aspect of the present invention is to improve the safety of traffic by preventing the occurrence of water pools on the side of the road by allowing water flowing on the surface layer of the paved road to be smoothly taken into the drainage channel without clogging. The purpose.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following technical means.
That is, the present invention provides a roadway portion made of drainable pavement, a boundary block that divides the roadway portion from the sidewalk portion, and on the side of the roadway of the roadway portion so that the upper surface coincides with the drainage layer surface of the drainage pavement. In the drainage structure of the drainage paved road provided with a drain block having a substantially rectangular cross-sectional shape, and taking in the water flowing through the drainage layer into the drain block,
The drain block is embedded in the roadside of the roadway in a state where the end surface of the drainage pavement is in contact with the side surface of the roadway, and the boundary block or the end surface of the foundation concrete is in contact with the side surface of the sidewalk.
The drain block is composed of a concrete pipe body having a drainage channel penetrating in the longitudinal direction,
The entire cross section of the pipe body is composed of a porous concrete layer having a thickness larger than the drainage layer of the drainage pavement,
The bottom surface of the tube main body and the lower part of the outer peripheral side surface are watertightly sealed with a sealing member (Claim 1).
[0009]
For this reason, according to the drainage structure according to the above configuration, the water flowing inside the drainage layer of the drainage pavement reaches the drainage channel through innumerable voids inherent in the porous concrete layer, It will be taken in smoothly without clogging.
Therefore, in the drainage structure of the drainage paved road using the drain block of the present invention, it is difficult for water pools to occur on the side of the paved road even when there is a lot of rain, and the drainage function of the drainage layer is deteriorated early. Can be prevented.
[0010]
In addition, the water flowing on the surface of the drainage layer penetrates downward from the entire top surface of the porous concrete layer of the drain block and reaches the drainage channel through innumerable voids, and is smoothly clogged in the drainage channel. Will be taken in.
Therefore, in the drainage pavement road using the drain block of the present invention, even if debris such as dead leaves or pieces of paper accumulates on the side of the road, moisture permeates downward from the upper surface of the porous concrete layer in the vicinity of the road. It is possible to effectively prevent the accumulation of water in the side portion and improve the safety of traffic.
[0011]
(Delete)
[0012]
Further, in the above-mentioned present invention, all cross sections of the tube body is composed of porous concrete layer. Therefore, in the drainage structure, the drain block, which all cross-section of the pipe body is larger porous concrete layer of the drainage layer thickness than that of the drainage pavement is employed (claims 1 and 2) .
Therefore, in the present invention, the bottom surface of the pipe body and the lower part of the outer peripheral side surface are sealed in a watertight manner by a sealing member (Claim 1 ), or the lower portion of the drainage channel in the pipe body is sealed in a watertight manner by the sealing member. (claim 2) by, so as to prevent moisture from leaking downward and the side of the drain block.
[0013]
(Delete)
[0014]
(Delete)
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Figure 1 shows a cross-sectional view of the discharge structure engaging Ru road to the present invention. In addition, the drain block 1 of the two-layer structure shown in FIG.1, FIG.2, FIG4 and FIG.5 is a comparative example, and the drainage structure using the drain block 1 shown in FIG.
As shown in FIG. 1 , this road is divided into a sidewalk part 4 and a roadway part 5 via a boundary block 3 made of precast concrete. The boundary block 3 is installed on the foundation concrete 7 cast on the crushed stone layer 6, and the crushed stone layer 6 that supports the boundary block 3 is laid on the roadbed 8.
[0016]
The drainage pavement 2 is constructed on the roadway portion 5 of the road. The pavement 2 is constructed by laying an impermeable layer 9 on the roadbed 8 and a porous asphalt mixture on the impermeable layer 9. It is comprised by constructing | assembling the drainage layer 10 which has the water-permeable function.
In addition, the adhesiveness is improved by applying the tack coat 11 between the impermeable layer 9 and the drainage layer 10.
[0017]
The drain block 1 has a roadside portion (boundary) of the roadway portion 5 with the end surface of the drainage pavement 2 in contact with the side surface of the roadway and the end surface of the foundation concrete 7 of the boundary block 3 in contact with the side surface of the sidewalk. It is embedded in the roadway 5 side of the block 3). The drain block 1 has a crushed stone layer 12 laid at the end of the roadway portion 5 in the roadbed 8 and is installed on an adjustment mortar 13 placed on the crushed stone layer 12. The height of the drain block 1 is adjusted so that it is flush with the surface of the drainage layer 10.
In the present embodiment, rainwater pipes 14 are embedded below the drain block 1 in the roadbed 8 of the roadway portion 5, and drainage that has flowed into the drain block 1 is provided at predetermined intervals in the longitudinal direction of the road. Through the rainwater pipe 14.
[0018]
As shown in FIG. 2, the drain block 1 of the present embodiment includes a pipe body 17 made of precast concrete having a drainage passage 16 having a circular cross section formed in a substantially rectangular cross section and penetrating in the longitudinal direction. Has been.
As shown in FIGS. 1 and 2, the drain block 1 of the comparative example is composed of a porous concrete layer 18 in which the upper half of the cross section of the pipe body 17 is thicker than the drainage layer 10 of the drainage pavement 2. The lower half of the cross section of the pipe body 17 is composed of a normal concrete layer 19 having substantially the same thickness as the upper half.
[0019]
The drainage channel 16 is disposed at the central portion of the cross section of the pipe body 17 so that the center thereof is located substantially at the joint surface between the two concrete layers 18 and 19. Thus, the drain block 1 of the present embodiment is formed by the porous concrete layer 18 having an upper portion of the pipe body 17 extending from the upper surface of the pipe body 17 to the drainage channel 16 and having a thickness larger than that of the drainage layer 10 of the drainable pavement 2. It is configured.
[0020]
For this reason, the external water that has flowed to the upper surface and the side surface of the pipe body 17 passes through innumerable voids in the porous concrete layer 18 and is taken into the drainage channel 16. In order to ensure the intake of moisture into the drainage channel 16, the porosity of the porous concrete layer 18 is preferably set to be approximately equal to or higher than the porosity of the drainage layer 10 of the drainage pavement 2. .
[0021]
In the drain block 1 of the present embodiment, a joint flange 20 (see FIG. 2) along the outer peripheral edge of the drainage channel 16 protrudes from one end surface in the longitudinal direction of the pipe body 17, and the other end surface in the longitudinal direction A joining circumferential groove (not shown) into which the joining flange 20 is fitted is formed, thereby facilitating positioning work when connecting the drain blocks 1 to each other.
Further, in the longitudinal end of the pipe body 17 and in the middle in the longitudinal direction, water is introduced from the upper part of the side wall of the pipe body 17 to the drainage channel 16 in order to more reliably collect water from the drainage layer 10 into the drainage channel 16. A hole 21 is formed. Furthermore, in the drain block 1 of the present embodiment, the upper surface of the pipe body 17 is provided with a gradient i (approximately about 2%) that is substantially the same as the transverse gradient on the roadway side.
[0022]
According to the drainage structure of the present embodiment related to the above configuration, as shown in FIG. 1, since the upper surface of the drain block 1 is buried on the side of the road so as to coincide with the drainage layer 10 surface of the drainage pavement 2, Moisture flowing through the drainage layer 10 reaches the drainage channel 16 through innumerable voids in the porous concrete layer 18 and is smoothly taken into the drainage channel 16 without clogging.
Therefore, according to the drainage pavement 2 using the drain block 1, it is difficult for a water pool to be generated on the roadside portion of the pavement 2 even when there is a lot of rain, and the drainage function of the drainage layer 10 is deteriorated early. Can be prevented.
[0023]
In the drain block 1, the entire upper half portion including the entire upper surface of the pipe main body 17 is composed of porous concrete layer 18, the moisture which has reached the upper surface of the flow surface of the drainage layer 10 the pipe main body 17 also Then, it penetrates the inside of the porous concrete layer 18 and is taken into the drainage channel 16. Therefore, also in this respect, the drainage performance is greatly improved as compared with the conventional drain block in which moisture is taken into the drainage channel only by the water guide holes formed at regular intervals on the side wall.
[0024]
Further, in this way, the water flowing on the surface of the drainage layer 10 penetrates downward from the entire upper surface of the porous concrete layer 18 and is taken into the drainage channel 16 through innumerable voids, so that dust such as dead leaves and pieces of paper are collected. Even if it accumulates on the side of the road, the water always permeates downward from the upper surface of the porous concrete layer in the vicinity of the road, so it is possible to effectively prevent the accumulation of water on the side of the road and improve the safety of traffic. it can.
[0025]
FIG. 3 shows a drain block 1 used in the drainage structure of the present invention .
The drain block 1, as shown in FIG. 3, a cross-section all of the pipe body 17 of a porous concrete layer 18.
However, in this case, as shown in FIG. 3 (a), the bottom surface of the pipe body 17 and the lower part of the outer peripheral side surface are sealed in a watertight manner with the seal member 22, so It is preferable to prevent moisture from leaking out. Moreover, you may decide to provide this sealing member 22 in the lower part of the drainage channel 16 in the pipe | tube main body 17, as shown in FIG.3 (b).
[0026]
Furthermore, in the illustrated example, the case where only one drainage channel 16 is formed in the pipe main body 17 is illustrated, but a plurality of the drainage channels 16 may be formed in the pipe main body 17. The cross-sectional shape is not limited to a circle, and can be formed in various shapes such as an ellipse and a rectangle.
[0027]
FIG. 4 is a comparative example of the present invention, and shows a cross-sectional view of a road where normal pavement 26 is performed using the drain block 1.
As shown in the figure, this road is also divided into a sidewalk part 4 and a roadway part 5 through a precast concrete boundary block 3. In the sidewalk part 4 of the road, a surface layer 28 having no water permeability, which is constructed by laying sidewalk blocks or the like on an impermeable layer 27 laid on the roadbed 8, is constructed.
[0028]
As shown in FIG. 4, the drain block 1 has a boundary block 3 side (in the case of FIG. 4A) or a public-private boundary 29 side (in FIG. In the case of b)). Further, the drain block 1 is directly laid on the crushed stone layer constituting the roadbed 8 so that the height of the drain block 1 is adjusted to be flush with the surface of the surface layer 28 of the normal pavement 26. ing.
[0029]
According to the drainage structure of this comparative example related to the above configuration, as shown in FIG. 4, the surface of the surface layer 28 is buried on the side of the road so that the upper surface of the drainage structure coincides with the surface of the surface layer 28 of the normal pavement 26. The flowing water reaches the drainage channel 16 through innumerable voids in the porous concrete layer 18 and is smoothly taken into the drainage channel 16 without clogging. Therefore, even if garbage such as dead leaves or pieces of paper accumulates on the side of the road, moisture permeates constantly downward from the upper surface of the porous concrete layer 18 in the vicinity thereof, so that it is effectively prevented that water pools are generated on the side of the road. , Traffic safety can be improved.
[0030]
Figure 5 shows a cross-sectional view of the drainage structure of another road subjected to drainage pavement 2 by using the drain block 1.
As shown in the figure, this road is also divided into a sidewalk part 4 and a roadway part 5 through a precast concrete boundary block 3. In the sidewalk part 4 of the road, a transparent horizontal plate 33 is laid without a gap on a crushed stone layer 31 laid on the roadbed 8 via a sand foundation 32, and the drainage layer 10 is formed by an aggregate of the transparent horizontal plate 33. It is configured.
[0031]
The drain block 1 has a roadside portion (a boundary block 3 of the boundary block 3) with the end surface of the drainage pavement 2 in contact with the side surface of the roadway and the end surface of the boundary block 3 in contact with the side surface of the sidewalk. It is buried in the roadway section 5 side).
Therefore, also in the drainage pavement 2 shown in FIG. 5, the moisture flowing inside and on the surface of the drainage layer 10 made of the transparent horizontal plate 10 is taken into the drainage channel 16 of the drain block 1 through the voids of the porous concrete layer 18. It is like that.
In addition, in the drain block 1 shown in FIG.4 and FIG.5, the cross-sectional height is set to be substantially the same as the pavement thickness (total thickness of the surface layer and the base layer), and the upper surface of the block 1 matches the surface of the surface layer. Therefore, it can be installed on the side of the road without forming a large installation groove. For this reason, there is an advantage that the amount of excavated soil when installing on the side of the road becomes extremely small, and the construction cost can be reduced.
[0032]
Moreover, the drain block 1 which comprised the whole cross section of the pipe main body 17 as shown in FIG. 3 with the porous concrete layer 18 also to the paved road shown in FIG.4 and FIG.5 is employable.
Although not shown in the drawings, the drain block 1 according to the present invention can also be applied to a permeable paved road having a water permeable function that directly returns rainwater falling on the road surface to the ground. Rainwater that could not be taken into the ground by permeable pavement can be drained efficiently by the drain block 1.
[0033]
【The invention's effect】
As described above, according to the present invention, the water flowing inside the drainage layer of the drainage pavement can be smoothly taken into the drainage channel without clogging, so that the drainage performance of the drainage layer is quickly reduced. Can be prevented in advance.
In addition, according to the present invention, the water flowing on the surface layer of the paved road can be smoothly taken into the drainage channel without clogging, so that it is possible to prevent the occurrence of a water pool on the side of the road and improve the safety of traffic. Can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a drainage structure of a road subjected to drainage pavement using a drain block according to a comparative example .
FIG. 2 is a perspective view of a drain block according to a comparative example .
3 is a transverse sectional view showing a Dorenburo' click used for drainage pavement of the present invention.
FIG. 4 is a cross-sectional view of a road that has been normally paved using a drain block according to a comparative example .
FIG. 5 is a cross-sectional view of another road on which drainage pavement is performed using a drain block according to a comparative example .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drain block 2 Drainable pavement 9 Impervious layer 10 Drainage layer 16 Drainage channel 17 Pipe body 18 Porous concrete layer 19 Normal concrete layer 22 Seal member 26 Normal pavement 28 Surface layer

Claims (2)

Roadway part (5) consisting of drainage pavement (2), boundary block (3) dividing this roadway part (5) from sidewalk part (4), and drainage layer of upper surface drainage pavement (2) ( 10) A drain block (1) having a substantially rectangular cross section embedded in the roadside of the roadway portion (5) so as to coincide with the surface, and water flowing through the drainage layer (10). (1) In the drainage structure of the drainage paved road that is taken into the interior,
The drain block (1) has an end surface of the drainage pavement (2) in contact with the side surface of the roadway side, and an end surface of the boundary block (3) or the foundation concrete (7) in contact with the side surface of the sidewalk. Embedded in the roadside of the roadway part (5) in the state,
The drain block (1) is composed of a concrete pipe body (17) having a drainage channel (16) penetrating in the longitudinal direction.
The tube made of the body wherein a total cross section of (17) drainage pavement (2) drainage layer (10) larger porous concrete layer thickness than the (18),
The drainage structure of the drainage paved road characterized in that the bottom surface of the pipe body (17) and the lower part of the outer peripheral side surface are sealed in a watertight manner by a sealing member (22) . Roadway part (5) consisting of drainage pavement (2), boundary block (3) dividing this roadway part (5) from sidewalk part (4), and drainage layer of upper surface drainage pavement (2) ( 10) A drain block (1) having a substantially rectangular cross section embedded in the roadside of the roadway portion (5) so as to coincide with the surface, and water flowing through the drainage layer (10). (1) In the drainage structure of the drainage paved road that is taken into the interior,
The drain block (1) has an end surface of the drainage pavement (2) in contact with the side surface of the roadway side, and an end surface of the boundary block (3) or the foundation concrete (7) in contact with the side surface of the sidewalk. Embedded in the roadside of the roadway part (5) in the state,
The drain block (1) is composed of a concrete pipe body (17) having a drainage channel (16) penetrating in the longitudinal direction.
Said tube Ri name from the main body wherein a total cross section of (17) drainage pavement (2) drainage layer (10) larger porous concrete layer thickness than the (18),
The drainage structure of the drainage paved road characterized in that the lower part of the drainage channel (16) in the pipe body (17) is watertightly sealed with a seal member (22) .

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