JP2018028239A - Structure of side ditch block for laying water-permeable asphalt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side ditch structure for improving safety of passing of a pedestrian and a bicycle by covering a drain hole formed on a surface of a concrete side ditch with water-permeable asphalt.SOLUTION: In a structure of a side ditch block, a plurality of drain holes are formed in large numbers at a constant interval on an upper surface of a secondary concrete side ditch block buried in the side end of a road, and the upper surface of the drain holes is covered with a draining filter plate, and water-permeable asphalt can also be laid flush with the road in the upper part thereof. The structure of the side ditch block for laying the water-permeable asphalt is provided so that the periphery of the drain hole formed on the upper surface of the side ditch block is formed as a fitting part of the filter plate recessed in a recess shape from a surface of a cover body, and the filter plate of forming a large number of small holes is fitted to the fitting part in a flush state with the upper surface of the side ditch block, and the drain hole formed on a surface of a concrete side ditch is formed in a cross-sectional taper shape of expansively opening downward.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a structure of a lateral groove block for laying asphalt that is disposed at a side end of a road and drains rainwater on the road.

  Conventionally, a gutter, which is a concrete secondary product for draining rainwater that has fallen on the road or rainwater that has flowed into the road, is buried at the side edge of the road. On the surface of the side wall made of concrete, a drainage hole, a drainage slit, a grating lid and the like are provided for draining rainwater on the road to a drainage channel in the side groove.

  However, in the side groove as described above, pedestrians and bicycles are easily slippery due to concrete on the surface, and bicycle tires and tips of pedestrian shoes (for example, high heels) are made of concrete side grooves. There is a risk that it may get caught in drain holes, drain slits, or grating lids provided on the surface of the bicycle, which may hinder the safe passage of bicycles and pedestrians.

  Therefore, with respect to the side gutter lid plate with a U-shaped gutter, the surface of the lid plate is made of a wide, permeable pavement surface, and pedestrians are forced to pass on the concrete lid plate. No gutter lid plate is disclosed. (See Patent Document 1.)

  Also disclosed is a technique for paving the surface of a U-groove side groove lid plate or a culvert-type side groove lid portion with water-permeable asphalt or the like, and interposing a filter between the water-permeable asphalt and the side groove lid plate. Yes. (See Patent Documents 2 to 4.)

JP 2007-120301 A JP 2006-90090 A JP 2010-285854 A JP 2013-221367 A

  Certainly, according to the cover plate of the side groove described in Patent Document 1, since the surface of the cover plate is a water-permeable pavement surface, when a bicycle or a pedestrian passes, compared with the surface of the side groove made of concrete. It is hard to slip and safe. However, drain drain fittings etc. are laid on one end of the lid plate, and the rain water on the lid surface is drained into the side groove, so that bicycles and pedestrians can slip on this drain fitting, or the top surface of the drain fitting There is a possibility that a heel of a pedestrian or the like may be fitted to the drain of the pedestrian, and there is a concern about safety.

  Furthermore, according to the cover plate of the side groove described in Patent Documents 2 to 4, a structure is disclosed in which the surface of the cover plate is paved with water-permeable asphalt or the like. Asphalt coated structures are disclosed. In permeable asphalt laying work on blocks with such a structure, materials such as aggregate of asphalt constituting the water permeable asphalt and the asphalt itself leak into the drain hole (collecting port) and fall into the side groove, and the side groove There are drawbacks such as reducing the internal flow volume. For this reason, the description of Patent Documents 2 to 4 discloses a technique in which a small hole plate that performs a filter function, for example, an extended metal or a plate material with a hole, is interposed between the water-permeable asphalt and the cover plate of the side groove. As much as possible to prevent leakage of asphalt material.

  However, referring to Japanese Patent Laid-Open No. 2006-90090 of Patent Document 2 closest to the present invention in such a filter intervening technique, in the same publication, long drain holes are formed in the side groove lid at regular intervals, and It is devised so that a permeable asphalt material or the like does not fall from the drain hole by covering a long plate with a small hole having a slightly larger area than the long drain hole so as to close it.

  Certainly, in the structure of Patent Document 2, a water-permeable asphalt material or the like does not leak from the drain hole. However, in the conventional method in which an extended metal or a plate with holes is interposed between the surface of the lid plate and the bottom surface of the water-permeable asphalt, for example, as shown in FIG. Since it is placed on the upper part of the long drainage hole 40 on the surface of the lid 10a of the side groove 10 and is raised by the thickness thereof, when a permeable asphalt material 50 is laid from above, a long plate with a small hole 30a The asphalt material 50 does not sufficiently reach the corner 50a between the side surface 30 and the surface of the lid 10a of the side groove, the corner 50a is hollowed, rainwater accumulates therein, and the water permeability laid on the surface of the lid 10a Rainwater flows backward from the bottom of the asphalt material 50 and infiltrates the surface of the asphalt material 50, wets the surface of the asphalt material 50, and diminishes the function of the asphalt material 50 of the water-permeable soot. There is that drawback.

  Furthermore, since the drainage holes of the lid of the side groove block are generally composed of holes having the same diameter from the upper end to the lower end, the drainage efficiency is made as large as possible from the viewpoint of drainage efficiency. When the asphalt is laid, the materials leaking from the filter may be combined with each other, clogging in the middle of the drain holes with the same diameter in the upper and lower sides, closing the drain hole and reducing the drainage function.

  The present invention provides a filter plate in which drainage holes formed on the surface of a concrete side groove block are covered with water-permeable asphalt and the periphery of the drainage hole formed in the side groove block lid is recessed from the surface of the lid body. A filter plate having a large number of small holes in the fitting portion is fitted with the lid of the side groove block in a flush state, and the drainage hole formed on the surface of the concrete side groove faces downward. As a result, the asphalt material evenly laid on the surface of the lid of the side groove block does not easily leak into the side groove and can sufficiently perform the water permeability function. Provided is a gutter structure that allows a bicycle or a pedestrian to safely pass through the upper surface of a block.

  In order to achieve the above object, the present invention provides the following techniques.

  In the present invention, a plurality of drainage holes are formed at regular intervals on the upper surface of the side groove block made of secondary concrete embedded in the side edge of the road, and the upper surface of the drainage hole is covered with a filter plate for drainage, In the structure of the side groove block that allows permeable asphalt to be laid flush with the road at the top, the periphery of the drain hole formed in the upper surface of the side groove block is the fitting part of the filter plate that is recessed from the surface of the lid In addition, the filter plate having a large number of small holes formed in the fitting portion is fitted in a state flush with the upper surface of the side groove block, and the drainage hole formed in the surface of the concrete side groove is expanded downward. The present invention provides a structure of a lateral groove block for laying water-permeable asphalt, which is formed in a tapered shape.

  The drainage filter plate is made of a thin plate-like heat-resistant plastic or punching metal having a plurality of small holes having a predetermined diameter.

  According to the present invention, a plurality of drainage holes are formed on the upper surface of the secondary concrete side groove block embedded at both ends of the road, the upper surface of the drainage hole is covered with the filter plate for drainage, and further on the upper part thereof. Since permeable asphalt is laid flush with the road, drain holes formed on the surface of the gutter block are not exposed on the surface of the road, ensuring the safety of pedestrians and bicycles passing through the surface Can do.

  In particular, there are a plurality of small holes having a slightly wider area than the long drainage holes so that long drainage holes are drilled at regular intervals on the upper surface (or side groove lid) of the side groove block. A long plate filter plate formed by drilling is covered from above, and the periphery of the drain hole formed on the upper surface of the side groove block is used as a filter plate fitting portion recessed from the surface of the lid body. Since the filter plate with a large number of small holes in the attachment part is configured to fit flush with the top surface of the side groove block, the long plate of the filter plate with small holes is placed on the surface of the lid of the side groove Even if it is done, it does not rise by the thickness. Therefore, when asphalt material is laid, the long plate with a small hole is flush with the top surface of the side groove block, so that the asphalt material can be laid flat, and rainwater smoothly drains holes on the top surface of the side groove block. Can flow out into the gutter.

  In other words, by adopting a flush configuration with no gap between the filter plate and the upper surface of the side groove block, a gap is generated between the side surface of the filter plate and the upper surface of the side groove block as described above (see FIG. 5). In addition, there is no fear that rainwater accumulates on the side surface of the filter plate, and there is an effect that the rainwater can flow back from the bottom of the asphalt, infiltrate the asphalt surface, wet the surface, and reduce the water permeability function of the asphalt.

  Furthermore, since the drainage hole formed in the upper surface (side groove lid) of the side groove block has a tapered shape that expands downward, when the water-permeable asphalt material is poured into the upper surface of the side groove block and laid, Even if some material leaks, it does not clog in the middle of the drain hole and easily leaks the leaked material downward, so that the drainage of the drain hole is not clogged and the drainage function can be sufficiently secured .

  At the same time, permeable asphalt was laid on the upper surface of the gutter block embedded in the side edge of the road so that it can be used widely, and even on roads without a sidewalk, sidewalks on both sides of the road It is possible to safely secure the travel path of the bicycle and the necessary width.

  Cover the top surface of the drainage hole with a thin plate-like heat-resistant plastic or punching metal plate made of punched metal with a plurality of small holes with a predetermined diameter, and lay a permeable asphalt on the top surface. Therefore, sufficient strength can be added to the water-permeable asphalt laid on the upper surface of the drainage hole, and the drainage filter plate can be prevented from being deformed and dissolved by the heat of the asphalt.

It is the top view and sectional drawing which show the structure of the gutter block which concerns on this embodiment. It is the top view and sectional view which show the state where the gutter block concerning this embodiment was embed | buried in the road. It is the top view and sectional drawing which show the structure of the gutter block which concerns on this embodiment. It is the top view and sectional view which show the state where the gutter block concerning this embodiment was embed | buried in the road. It is sectional drawing of the structure which laid asphalt through the well-known filter board on the conventional gutter block with a drain hole.

  According to the present invention, a plurality of drain holes are formed on the upper surface of a side groove block made of secondary concrete embedded in a side edge of a road, the upper surface of the drain hole is covered with a filter plate for drainage, and further, water permeability is formed on the upper portion thereof. In a side groove structure in which asphalt is laid flush with the road, the drainage filter plate and the top cover of the side groove block are flush with each other, and the drain hole of the top cover of the side groove block is a taper that expands downward. It is characterized by

  Further, the filter plate for drainage is characterized in that it is made of a thin plate-like heat-resistant plastic or punching metal having a plurality of small holes having a predetermined diameter.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following explanation, in principle, structures and parts of the side groove blocks embedded in the left and right side edges of the road are the same in the left and right or symmetrical, and the same reference numerals are attached, and only one of the left and right is explained. The description of the other will be omitted as appropriate.

  Moreover, the water-permeable asphalt used by the following this embodiment (1st embodiment or 2nd embodiment) is also called drainage pavement, and uses an asphalt mixture. This asphalt mixture is a porous asphalt mixture having a high porosity, and as the material, for example, an asphalt mixture made of coarse aggregate, fine aggregate, filler, and asphalt is preferably used. Moreover, all asphalt mixtures are required to have a water permeability, and as an example, asphalt mixtures having a porosity of 12% or more are preferably used. In addition to water-permeable asphalt, water-permeable ceramics with a porous structure whose surface and interior are composed of coarse-grained porcelain and fine gaps can be used instead of water-permeable asphalt. It can also be used.

[First embodiment]
Hereinafter, with reference to FIG.1 and FIG.2, 1st embodiment at the time of using the transverse culvert type side groove block 1 of an integral structure in this invention is described.

  As shown in FIG. 1 or FIG. 2, the side groove block 1 of the present embodiment is a culvert type, and is a concrete secondary product, that is, a concrete structure integrally formed from concrete. The side groove block 1 as a whole has a substantially cylindrical shape or a substantially quadrangular prism shape in which the cylinder axis direction is the longitudinal direction and both ends are open. The side groove block 1 has a drainage channel 2 formed along the longitudinal direction of the side groove block 1 and penetrating the side groove block 1.

  On the upper surface 1a of the gutter block 1, a drain hole 4 is formed in the substantially central portion so as to penetrate the substantially elliptical drainage channel 2 along the short direction of the upper surface 1a. A plurality of drain holes 4 are formed at regular intervals in the longitudinal direction of the upper surface 1a. A rectangular recess having a predetermined depth substantially the same as the thickness of the filter plate 3 is formed around the drain hole 4 so as to surround the drain hole 4, and this is used as a fitting portion 4 a of the filter plate 3. And the filter part 3 for drainage of the substantially same shape as a rectangular recessed part is engage | inserted and installed in the fitting part 4a of the filter board 3 of this recessed part.

  A large number of small holes (for example, 5 mm) having a predetermined diameter (for example, 5 mm) are formed in the filter plate 3 fitted to the fitting portion 4a as drainage small holes. The upper surface 1a of the side groove block 1, that is, the periphery of the drainage hole 4 formed on the surface of the lid 1A is recessed to form the fitting portion 4a of the filter plate 3, and the surface of the side groove lid 1A, that is, the upper surface of the side groove block 1 The filter plate 3 is fitted to the fitting portion 4a in the same state as 1a, and the drainage hole 4 formed in the surface of the concrete side groove block 1 is formed in a tapered section T which is expanded downward. doing.

  Thus, the filter plate 3 for drainage is formed in a rectangular thin plate shape, and a plurality of small holes having a predetermined diameter are formed. As a material for the filter plate 3 for drainage, a heat-resistant plastic having a plurality of small holes having a predetermined diameter or a punching metal made of metal (iron (galvanized), stainless steel, aluminum, etc.) is preferably used. Used. By installing the filter plate 3 for drainage made of a material having high heat resistance in this manner on the fitting portion 4a of the filter plate 3 having a rectangular recess formed around the drain hole 4, a side groove block will be described later. 1, when the permeable asphalt 5 is laid on the upper surface 1 a, the permeable asphalt 5 laid on the upper part of the drain hole 4 is stably supported, and the upper part of the drain hole 4 enters the drain channel 2 of the side groove block 1. It is possible to prevent the material of the water-permeable asphalt 5 from collapsing. Moreover, it can prevent that the filter board 3 for drainage melt | dissolves or deform | transforms with the heat of asphalt, such as summer.

  Further, a trapezoidal ridge 1b is formed on one side end of the upper surface 1a of the side groove block 1 in the longitudinal direction, forming a trapezoidal space formed on the lower bottom surface 6a of the curb block 6 described later. It is configured to be able to be fitted to the concave strip portion 6b.

  As shown in FIG. 2, the side groove block 1 described above is placed on a basic crushed stone K laid on the bottom of soil D excavated at both sides of the roadway S at a predetermined depth. And it is embed | buried at the both ends of the roadway S so that the upper surface 1a of the gutter block 1 and the surface of the soil D of the roadway S may become flush | level. Furthermore, in this embodiment, the water-permeable asphalt 5 is laid by the predetermined thickness from the surface of the soil D of the roadway S formed in the same plane to the upper surface 1a of the gutter block 1. The permeable asphalt 5 is provided with a gentle slope downward from the center of the roadway S to the upper surface 1a of the side groove block 1, and rainwater that has fallen on the roadway S or that has flowed into the roadway S is transferred to the roadway S. It is made to flow down to the upper part of the side groove block 1 embed | buried at the both ends of this.

  As a result, rainwater that falls or flows into the roadway S penetrates the water-permeable asphalt 5 laid on the upper side of the side groove block 1, and from the drain hole 4 formed in the upper surface 1 a of the side groove block 1, the side groove block It flows down into the drainage channel 2 of 1 and is drained.

  A curb block 6 disposed along the outer edge of the sidewalk H is disposed at the boundary between the sidewalk H and the roadway S of the road, and the sidewalk H and the roadway S are partitioned by the curb block 6. . The curb block 6 has substantially the same shape as the curb block of a normal concrete secondary product, is formed in a substantially rectangular shape in cross section with a predetermined length, and is an entry prevention ridge that prevents the automobile from entering the sidewalk H.

  On the lower bottom surface 6a of the curb block 6, a concave strip portion 6b forming a trapezoidal space is formed, and is configured to be fitted to the convex strip portion 1b formed on the upper surface 1a of the side groove block 1 described above. ing. In this way, the gutter block 1 is embedded in the soil D along the outer edge of the roadway S, and the upper surface 1a of the gutter block 1 is partially overlapped with and adjacent to the lower bottom surface 6a of the curb block 6. Buried.

  With this configuration, the joint portion between the curb block 6 and the upper surface 1 a of the side groove block 1, that is, the upper surface 1 a of the side groove block 1 is formed on the lower bottom surface 6 a of the curb block 6 and the upper surface 1 a of the side groove block 1. The projected ridge portion 1b and the recessed ridge portion 6b formed on the lower bottom surface 6a of the curb block 6 are fitted as a joined portion, and the joined portion is detoured by the projected ridge portion 1b and the recessed ridge portion 6b. A longitudinal joining surface is formed. As a result, the growth of weed roots is stopped by the behavior that the growth of the weed roots grows in the lower and horizontal directions but the upward growth is inhibited. Therefore, it is possible to avoid the growth of weed roots in the soil D of the sidewalk H from the joint portion. That is, the ridges 1b formed on the upper surface 1a of the gutter block 1 and the ridges 6b formed on the lower bottom surface 6a of the curb block 6 prevent weeds from growing on the soil D on the roadway S side. Will serve as a herbicide measure.

  Furthermore, the side groove block 1 and the curb block 6 are prevented from side-to-side vibration and peristalsis by the fitting and joining of the ridge portion 1b of the side groove block 1 and the concave ridge portion 6b of the curb block 6, and the side groove block 1 and the curb block 6 are connected. Becomes even stronger.

  Further, the joint lower part of the curving block 6 with the side groove block 1 of the inclined outer wall surface 6d which is the wall surface on the roadway S side (side groove side) is brought into close contact with the water permeable asphalt 5, so It is possible to prevent the seed root from growing and growing in the soil D of the sidewalk H as much as possible.

  Further, the curb block 6 has a lower bottom surface 6a extending toward the sidewalk H on the sidewalk H side. Specifically, a rectangular protruding portion 6e is formed by projecting the lower part of the curb block 6 on the sidewalk H side in the longitudinal direction to the sidewalk H side. A ridge 6c is formed on the upper surface of the protrusion 6e on the sidewalk H side of the curb block 6, and an asphalt 5a is laid on the top of the ridge 6c to form the sidewalk H. That is, the sidewalk H of the asphalt 5a is laid above the roadway S.

  Thus, by laying the asphalt 5a on the upper surface of the protrusion 6e on the sidewalk H side of the curb block 6, weed roots grow from the joint surface between the asphalt 5a and the sidewalk H side of the curb block 6, and It is possible to avoid growing in the soil D. That is, the ridge 6c formed on the upper surface of the side wall H side protrusion 6e of the curb block 6 functions as a herbicidal measure to prevent weeds from growing on the soil D on the sidewalk H side. Become.

  In the figure, reference numeral 7 denotes a white line on the roadway outer side clearly shown at the position of the shoulder of the roadway S. According to the present invention, since the roadway S can be widened to the side groove block 1 as much as possible as compared with the conventional roadway, the white line G can be clearly shown on the roadway S so as to be easily discriminated. K1 indicates a basic crushed stone laid below the curb block 6. In the figure, K2 is the sidewalk H side, and shows the basic crushed stone laid under the curb block 6.

  According to the first embodiment described above, a plurality of drain holes 4 are formed in the upper surface 1a of the secondary concrete side groove block 1 embedded at both ends of the road, and the upper portions of the drain holes 4 are used for drainage. Cover the filter plate 3 with a permeable asphalt 5 on the top of the filter plate 3 so as to be flush with the road (the roadway S), and make the periphery of the drain hole 4 on the upper surface 1a of the side groove block 1 concave from the surface of the lid. The filter plate 3 is recessed to form a fitting portion 4a, and the filter plate 3 is fitted to the upper surface 1a of the side groove block 1 so as to be flush with the upper surface 1a of the concrete side groove block 1. The drain hole 4 is formed in a taper-shaped cross section T that expands downward, so that the long plate of the filter plate 3 with small holes can be placed on the upper surface of the side groove block 1, that is, the surface of the lid 1A. Raised by the thickness Therefore, when the permeable asphalt 5 is laid, the long filter plate 3 with a small hole is flush with the upper surface 1a of the side groove block 1 so that the material of the permeable asphalt 5 can be laid flat. Yes, rainwater can smoothly flow out from the drain hole 4 on the upper surface 1a of the side groove block 1 to the drain channel 2 in the side groove.

  That is, by adopting a flush structure without a gap between the filter plate 3 and the upper surface 1a of the side groove block, no gap is generated between the side surface of the filter plate 3 and the upper surface 1a of the side groove block. There is no risk of rainwater accumulating on the side surface, and rainwater flows backward from the bottom of the permeable asphalt 5 laid on the upper surface 1a of the gutter block to infiltrate the surface of the permeable asphalt 5 to wet the surface, thereby providing the water permeable function of the permeable asphalt 5 Disability can be eliminated.

  Furthermore, since the drain holes 4 formed in the upper surface 1a (lid 1A) of the side groove block 1 of the side groove block 1 have a tapered section T that is widened downward, the material of the water permeable asphalt 5 is used as the side groove block. Even if a part of the material leaks from the filter plate 3 when it is poured into the upper surface 1a of the filter 1, the drainage hole 4 has a tapered section T that is widened downward. The drainage hole 4 does not leak and the drainage hole 4 is not clogged, and the drainage function can be sufficiently secured.

  In addition, when a bicycle or a pedestrian passes, it is less slippery than the surface of a concrete side groove and can improve safety, and communicates with the drainage channel 2 inside the side groove block 1 so that the side groove block Since the opening of the drainage hole 4 formed in the upper surface 1a of 1 is not exposed on the surface of the road, a pedestrian who passes through the upper part of the drainage hole 4 takes a foot by contact with the opening of the drainage hole 4 and shoes or the like. It is possible to ensure the safety of pedestrian traffic.

  In addition, since the permeable asphalt 5 is laid on the upper surface of the side groove block 1 buried at both ends of the road so as to be flush with the road, the road outer white line clearly shown at the position of the road shoulder is made as close as possible to the side groove block 1 side. It is possible to widen and widen the roadway S.

  In the above-described first embodiment, the road having the sidewalk H and the roadway S has been described as an example. However, particularly on a road where the sidewalk H is not provided, the sidewalk H or the bicycle is installed at both ends of the road. It is possible to secure a traveling path safely with a necessary width, and it is possible to improve the safety of pedestrians and bicycles traveling on the sidewalks H on both ends of the road and the traveling path of the bicycle.

  Further, the upper surface 1a of the drainage hole 4 is covered with a drainage filter plate 3 made of a thin plate-like heat-resistant plastic or punching metal having a plurality of small holes having a predetermined diameter, and further, the upper surface is water-permeable. Since the asphalt 5 is laid, sufficient strength is added to the water-permeable asphalt 5 laid on the upper surface 1a of the drain hole 4, and the drainage filter plate 3 is prevented from being deformed and dissolved by the heat of the asphalt. it can.

  Further, the side groove block 1 according to the present invention is not limited to the above-described substantially cylindrical block, and is, for example, a culvert type having a U-shape or a gate shape as another embodiment described below. Various shapes can be adopted within the scope of the gist of the invention.

[Second Embodiment]
Hereinafter, with reference to FIG.3 and FIG.4, 2nd embodiment at the time of using the U-shaped side groove block 1 in this invention is described. In the following description, functions similar to those of the culvert-type side groove block 1 described above may be denoted by the same reference numerals and description thereof may be omitted.

  As shown in FIGS. 3 and 4, the side groove block 1 ′ of this embodiment is U-shaped, and is formed of a concrete secondary product, that is, concrete, as a material like the underdrain type of the first embodiment described above. A concrete structure. The side groove block 1 ′ is configured separately from a U-shaped main body 1B having a concave drainage channel 2 formed in the center and a lid body 1A installed on the upper side along the longitudinal direction of the side groove block 1 ′. Yes. The side groove block 1 'as a whole has a substantially cylindrical shape or a substantially quadrangular prism shape with the cylinder axis direction as the longitudinal direction and both ends opened.

  A drainage hole 4 ′ that penetrates a substantially circular drainage channel 2 having a predetermined diameter is formed in a substantially central portion of the upper surface 1 a of the lid 1 </ b> A of the side groove block 1 ′ in the short direction. A plurality of drain holes 4 'are formed at regular intervals in the longitudinal direction of the upper surface 1a. This drain hole 4 'has an expanded section taper T in the lower part, like the drain hole 4 of the first embodiment described above, and the opening of the upper surface 1a of the lid 1A is permeable asphalt. 5 to coat.

  Further, on the sidewalk H side of the upper surface 1a of the lid body 1A, an upper surface 1a 'raised above the upper surface 1a is formed with a step 6d' as a boundary, and a side groove block is formed at a substantially central portion of the upper surface 1a '. A raised body 6 ′ having a substantially square cross section for partitioning the sidewalk H and the roadway S continuously in the longitudinal direction of 1 ′ is formed. The sidewalk H and the roadway S are partitioned by the raised body 6 '. On the side of the roadway S on the upper surface 1 a ′ directly below the raised body 6 ′, a substantially elliptical drainage slit 4 b is formed penetrating the drainage channel 2 in the longitudinal direction of the side groove block 1 ′. A plurality of drain slits 4b are formed at regular intervals in the longitudinal direction of the upper surface 1a '. Further, unlike the drain hole 4 ′ described above, the drain slit 4 b is formed with an opening opening in the upper surface 1 a ′ of the lid 1 </ b> A.

  A permeable asphalt 5 is laid from the step 6d 'to the roadway S, with the step 6d' dividing the upper surface 1a and the upper surface 1a 'formed on the lid 1A as a boundary. In addition, a trapezoidal ridge 1b 'is formed in the longitudinal direction on the side of the roadway S from the step 6d', which is a substantially central portion of the upper surface 1a of the lid 1A. A trapezoidal ridge 6c 'is formed in the longitudinal direction on the side of the sidewalk H below the raised body 6' on the upper surface 1a 'of the lid 1A.

  Similar to the side groove block 1 of the first embodiment described above, the side groove block 1 ′ is placed on the foundation crushed stone K laid on the bottom of the soil D excavated at both sides of the roadway S at a predetermined depth. . And it is embed | buried at the both ends of the roadway S so that the upper surface 1a of the cover body 1A of the gutter block 1 'and the surface of the soil D of the roadway S may become flush | level. Further, the permeable asphalt 5 is laid with a predetermined thickness from the surface of the soil D of the roadway S formed flush with the step 6d 'formed on the upper surface 1a of the lid 1A. And this water-permeable asphalt 5 is provided with a gentle slope downward from the central part of the roadway S to the upper surface 1a of the lid 1A of the side groove block 1 ′, and flows into the rainwater and the roadway S that have fallen on the roadway S. Rainwater flows down to the upper part of the side groove block 1 ′ embedded in both side ends of the roadway S.

  As a result, rainwater that falls or flows into the roadway S penetrates the water-permeable asphalt 5 laid on the upper surface 1 a of the side groove block 1 ′, and drain holes 4 formed in the upper surface 1 a of the side groove block 1. From ', it flows down into the drainage channel 2 of the gutter block 1' and is drained. Further, the rainwater that has not penetrated into the water permeable asphalt 5 is below the raised body 6 ′ of the upper surface 1a ′ of the side groove block 1 ′, and is formed on the roadway S side with an opening on the upper surface 1a ′ of the lid 1A. From the opening of the drainage slit 4b provided to be opened, it flows down into the drainage channel 2 of the side groove block 1 ′ and is drained.

  At the upper part of the upper surface 1a of the lid 1A of the side groove block 1 ', the water-permeable asphalt 5 has a predetermined thickness in close contact with the step 6d' of the lid 1A from the surface of the soil D of the roadway S formed flush. Laid. With this configuration, the step 6d ′ formed on the top surface 1a of the lid 1A is in close contact with the water permeable asphalt 5, and the step 6d ′ formed on the top surface 1a of the lid 1A and the step 6d ′ formed on the lid 1A. In the upper surface 1a of the lid 1A of the side groove block 1 ', the upward growth of the weed root is prevented from entering into the gap with the natural asphalt 5 and the upward growth of the weed root grows in the horizontal direction. The growth of weed roots is stopped by the formed ridges 1b '. That is, the ridge 1b ′ formed on the upper surface 1a of the lid 1A of the gutter block 1 ′ functions as a herbicidal measure for preventing weeds from growing on the soil D on the roadway S side. .

  A trapezoidal ridge 6c 'is formed in the longitudinal direction on the side of the sidewalk H below the raised body 6' on the upper surface 1a 'of the lid 1A. A sidewalk H is formed by laying asphalt 5a on the upper portion of the ridge 6c '. As described above, the asphalt 5a is laid on the side of the sidewalk H below the raised body 6 'on the upper surface 1a' of the lid 1A, so that the weed roots are asphalted by laying the asphalt 5a on the upper part of the trapezoidal ridge 6c 'in the longitudinal direction. It is possible to avoid growing in the soil D of the sidewalk H by growing from the joint surface between 5a and the side of the raised body 6 'on the sidewalk H. In other words, the ridge 6c ′ formed on the side of the sidewalk H below the raised body 6 ′ of the upper surface 1a ′ of the lid 1A is a herbicidal measure for preventing weeds from growing on the soil D on the side of the sidewalk H. Will function as.

  In the figure, reference numeral 7 denotes a white line on the roadway outer side clearly shown at the position of the shoulder of the roadway S. As a result, the roadway S can be widened to the side groove block 1 as much as possible as compared with the conventional roadway, so that the white line can also be clearly shown on the roadway S. Reference numeral 8 denotes a bicycle traffic area on the roadway S by blue arrow blades that clearly indicate a position indicating a bicycle traffic area (including the traveling direction). As a result, the bicycle traffic area on the roadway S can be widened to the side groove block 1 'side as much as possible as compared to the conventional roadway, and the bicycle road area is clearly shown on the roadway S so as to be easily discriminated. can do.

  According to the second embodiment described above, the plurality of drain holes 4 ′ formed in the upper surface 1 a of the lid body 1 </ b> A of the side groove block 1 have a tapered section T that is widened downward, so that the permeable asphalt 5. When the material is poured into the upper surface 1a of the side groove block 1 and laid, even if a part of the material leaks from the upper surface opening of the drain hole 4 ', the drain hole 4' has a taper-shaped section T that is expanded downward. Therefore, the leaked material can be easily leaked downward and the drainage hole 4 'is not clogged, and the drainage function can be sufficiently secured.

  Furthermore, a plurality of drain holes 4 'are formed in the upper surface 1a of the secondary concrete side groove block 1' embedded at both ends of the road, and the permeable asphalt 5 is placed on the road (roadway) above the drain hole 4 '. Since it is laid flush with S), when a bicycle or a pedestrian passes, it is less slippery than the surface of a concrete side groove, and safety can be improved. Further, since the opening of the drainage hole 4 'formed in the upper surface 1a of the side groove block 1 is not exposed to the surface of the road, it is in communication with the drainage channel 2 inside the side groove block 1, so that walking that passes through the upper part It is possible to ensure the safety of the pedestrian's passage without a person taking his / her foot due to the contact between the opening of the drain hole 4 ′ and the shoes.

  Further, the drainage slit 4b formed on the roadway S side of the upper surface 1a ′ directly below the raised body 6 ′ of the side groove block 1 ′ is in the longitudinal direction of the side groove block 1 ′, and is on the side of the roadway immediately below the raised body 6 ′. Along with this, the opening is formed in the upper surface 1a 'of the lid 1A so that a pedestrian who passes through the upper portion of the lid 1A' can take his / her foot by contact with shoes or the like at the opening of the drain slit 4b. In addition, the safety of pedestrian traffic can be ensured.

  In addition, since the permeable asphalt 5 is laid on the upper surface of the side groove block 1 'buried at both ends of the road so as to be flush with the roadway S, the roadway outer white line 7 clearly indicated at the position of the road shoulder is made as much as possible. It becomes possible to widen to one side, and the roadway S can be widened. Furthermore, the bicycle traffic area 8 on the roadway S can be widened to the side groove block 1 'as much as possible as compared with the conventional roadway, and the bicycle traffic area can be widened. Further, the roadway outer white line 7 and the bicycle traffic area 8 can be clearly shown on the roadway S so as to be easily distinguished.

  In the second embodiment described above, a road having a sidewalk H and a roadway S has been described as an example. However, particularly on a road where the sidewalk H is not provided, a sidewalk H or a bicycle is installed at both ends of the road. It is possible to secure a traffic area safely with a necessary width, and it is possible to improve the safety of pedestrians and bicycles passing through the sidewalks H and the bicycle traffic area on both ends of the road.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

H Sidewalk S Roadway T Tapered section 1 Gutter block 1A Cover 1a Top surface 2 Drainage channel 3 Filter plate 4 Drainage hole 5 Permeable asphalt 6 Curb block 7 White road outside road 8 Bicycle traffic area

Claims (2)

  A plurality of drainage holes are formed at regular intervals on the upper surface of a secondary concrete gutter block embedded in the side edge of the road, the upper surface of the drainage hole is covered with a drainage filter plate, and further, water is permeable to the upper part. In the structure of a side groove block that allows the asphalt to be laid flush with the road, the periphery of the drainage hole formed on the top surface of the side groove block is used as a fitting part of the filter plate that is recessed from the surface of the lid. A filter plate with a large number of small holes in the section is fitted in flush with the upper surface of the side groove block, and the drainage holes formed on the surface of the side groove block made of concrete have a tapered cross section that expands downward. The structure of the side groove block for permeable asphalt laying characterized by having formed.   2. The permeable asphalt laying according to claim 1, wherein the drainage filter plate is made of a thin plate-like heat-resistant plastic or punching metal having a plurality of small holes having a predetermined diameter. Side groove block structure.