JP3055057U - Dish type gutter concrete block - Google Patents

Abstract

(57) [Abstract] [Problem] To efficiently perform drainage treatment on the shoulder of a drainable pavement road. SOLUTION: In order to efficiently permeate rainwater flowing down a pavement surface 11 to a drainage treatment layer 20 laid in a lower layer on a pedestrian road boundary along a longitudinal direction of a drainage pavement road 1,
It was formed into a dish shape with permeable concrete having voids.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a dish-shaped gutter concrete block, and more particularly to a dish-shaped gutter concrete block capable of efficiently performing drainage treatment on a shoulder of a road on which general pavement or drainage pavement is paved.

[0002]

[Prior art]

 In recent years, many drainage pavements that can quickly drain rainwater on road surfaces on heavy traffic roads have been constructed. In this drainage pavement, an impermeable layer is laid under a drainage layer consisting of a porous asphalt mixture layer with a high porosity.Rainwater on the surface of the pavement is drained quickly through voids in the drainage layer. Can be done. By the way, in order for this drainage pavement to fully exhibit its drainage function, the upper surface of the water-impermeable layer must have a sufficient gradient or flat layer, and the drainage can quickly flow down to the drainage ditch or gutter provided at the shoulder of the road. The structure which makes it so is adopted.

FIGS. 4 and 5 are partial cross-sectional views showing an example of a conventional drainage treatment structure for drainage pavement. In FIG. 4, reference numeral 50 denotes a drainage functional layer made of permeable concrete. The drainage function layer 50 is laminated on the water-impermeable layer 52 via an intermediate layer 51 having a water-blocking effect. Rainwater or the like penetrates the drainage function layer 50 from the pavement surface, and flows down the intermediate layer 51 along the transverse gradient to the L-shaped groove 53 provided on the road shoulder. The substantially L-shaped concrete block 54 constituting the L-shaped groove 53 is made of a precast product, and is laid at the shoulder position along the road alignment. Further, a concrete water collecting trough 55 is provided in the underground portion of the L-shaped concrete block 54 at predetermined intervals along the longitudinal direction of the road. A water guide pipe 56 for guiding rainwater to the water collecting sump 55 is laid between the adjacent water collecting sumps 55. A perforated PVC pipe or the like is used for the water guide pipe 56.

FIG. 5 shows an example in which an intermediate water permeable layer 60 is provided to guide flowing water from a drainage function layer 50 to a water pipe 56 buried underground. As shown in FIG. 5, the drainage function layer 50 is paved up to the sidewalk block at the end of the road shoulder. An intermediate permeable layer 60 is provided below the end of the pavement. The intermediate permeable layer 60 has the same composition as the permeable concrete constituting the drainage function layer 50. Single-grain No. 4 crushed stone is filled so as to cover the periphery of the water guide pipe 56.

[0005]

[Problems to be solved by the invention]

 By the way, in the example of the drainage treatment structure of a general pavement road or drainage pavement shown in FIGS. 4 and 5, for example, in the case of FIG. 4, an L-shaped concrete block is laid along the longitudinal direction of the road. Prior to collecting water, the water transmission pipe must be buried, which increases construction costs. On the other hand, in the wastewater treatment structure shown in FIG. 5, the wastewater flowing from the drainage functional layer 50 is guided to the water pipe 56 buried underground through the intermediate permeable layer 60, but the pedestrian road block 57 has drainage properties. Since it corresponds to the curb portion of the pavement, for example, when the sidewalk 58 is washed and paved with permeable concrete or the like, the concrete sidewalk block 57 having a different texture is provided at the boundary between the pavement surface of the roadway 59 and the sidewalk 58. Are laid in a straight line, the design continuity between the roadway 59 and the sidewalk 58 cannot be obtained, and there is also a problem in aesthetics.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the conventional technology, to improve the appearance of the landscape, maintain the continuity of the roadway and the sidewalk, and to drain the water from the pavement surface and the drainage function layer. An object of the present invention is to provide a dish-shaped gutter concrete block capable of draining rainwater and the like to an underground drainage pipe promptly.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is laid at the pedestrian road boundary along the vertical direction of the pavement road, and has a gap through which rainwater flowing down the pavement surface can penetrate to the drainage treatment layer paved below. It is characterized by being molded with permeable concrete.

[0008] Furthermore, rainwater laid on the sidewalk boundary along the longitudinal direction of the drainable pavement road, and which allows rainwater flowing down the pavement surface and the drainage function layer to penetrate into a drainage treatment layer provided below, forms a water-permeable gap. Characterized by being molded with permeable concrete having the same.

[0009]

[Embodiment of the invention]

 An embodiment of a dish-shaped gutter concrete block according to the present invention will be described below with reference to FIG. FIG. 1 is a perspective view integrally showing a dish-shaped gutter concrete block of the present invention used for drainage pavement and a drainage treatment layer 20 laminated below the dish-shaped gutter concrete block 10. In FIG. 1, the height of the front surface 10a of the block is approximately the same as the upper surface of the drainage function layer 11 at the boundary between the surface layer 11 as the drainage function layer of the drainage pavement paved on the roadway and the sidewalk (not shown). A dish-shaped gutter concrete block 10 (hereinafter simply referred to as a concrete block 10) is installed so as to be as follows. As shown in FIG. 1, the concrete block 10 is laid on the drainage treatment layer 20 so as to have a predetermined vertical gradient continuously along the vertical direction of the drainable pavement road. By being laid continuously as described above, the shallow round-bottom concave portion 10c having a predetermined curvature provided on the block upper surface 10b forms the drain groove 12 along the longitudinal direction of the road. The concrete block 10 is a precast concrete product manufactured at a factory, and natural cobblestone 13 having a grain size of about 25 mm is used as an aggregate. Moreover, since it is manufactured as a permeable concrete having sufficient voids between aggregates, a porosity of 20 to 25% and k = (1.0 to 10.0) × 10 ^-1 A water permeability of about cm / s can be obtained. As a result, for example, rainwater flowing downstream on the pavement surface and permeated water flowing into the surface layer 11 of the drainage functional layer can flow down to the illustrated roadbed 21 and the intermediate permeable layer 22 provided below the roadbed. Also, high-pressure water is sprayed on the pavement surface to remove the concrete mortar adhering to the aggregate, so that the pavement surface can be washed out.

The drainage treatment layer 20 includes a subbase 21 and an intermediate permeable layer 22 provided below the subbase 21. The roadbed 21 is laid with a crusher run (C-40) 25, and the top is flattened. Thereby, the dish-shaped gutter concrete block 10 can be laid in a stable state. Further, an intermediate permeable layer 22 is provided below the roadbed 21. The intermediate permeable layer 22 supports the roadbed 21, and the drainage flowing down the roadbed 21 through the water pipes 24, which are provided in the layer, is guided to a water collecting tank (not shown). A perforated resin pipe similar to that of the conventional example is used for the water guide pipe 24, and the periphery of the water guide pipe 24 is filled with a single crushed stone 4 having high water permeability.

FIG. 2 shows that rainwater and the like permeating from a concrete block 10 forming a dish-shaped gutter laid between a road 1 made of drainage pavement and a sidewalk 2 made of permeable pavement are provided in the lower layer. FIG. 4 is a cross-sectional view schematically showing a state of flowing down to a drainage treatment layer 20 that has been drained. In this embodiment, a permeable pavement is paved on the sidewalk 2 side partitioned by the concrete block 10. In the permeable pavement section, it is assumed that the drainage flows down to the subgrade (not shown) and penetrates into the ground. However, the drainage is also drained to the dish-shaped gutter through the gap in the pavement. Therefore, in the case of a road shoulder structure as shown in FIG. 2, the drainage flowing from the drainage pavement on the side of the road 1 and the drainage flowing from the sidewalk 2 of the permeable pavement can be treated together. In the case of such a pavement configuration, it is preferable to increase the diameter of the perforated resin pipe of the water guide pipe 24 in consideration of the amount of flowing water.

FIGS. 3A to 3D are side views showing modified examples of the dish-shaped gutter concrete block 10. In a cold region where the pavement surface is expected to freeze in winter or a large amount of snow is piled up on the road shoulders due to snow removal, etc., as shown in FIG. The number of heaters 30 can be buried. As the heater, a resistance heating type rod heater having a waterproof structure is preferable. By incorporating a heater in this way, it is possible to maintain the drainage function by melting snow and ice accumulated on the dish-shaped gutter, and secure walking safety for pedestrians. The shape and heating method of the heater are not limited to this example, and various types can be applied.

FIG. 3B shows a groove having a smooth curved surface by reducing the curvature of the drainage groove 12 (enlarging the radius of curvature) when the flow rate flowing through the groove surface of the dish-shaped gutter concrete block 10 is small. A part can be formed, and an excellent effect can be provided in design. In the dish-shaped gutter 10 shown in FIGS. 3A and 3B, a step is provided on the side of the road and on the side of the sidewalk, so that the cross section of the concrete block 10 is substantially L-shaped, and the shoulder of the step is formed. A round chamfer is applied to the 10d position. Thereby, when the vehicle or the like gets on the sidewalk, it is possible to prevent the stepped portion from being partially chipped or the aggregate from peeling off.

FIGS. 3 (c) and 3 (d) show a dish-shaped gutter used for a central drainage type road whose crossing slope is directed to the center line. Even in the case of a dish-shaped gutter having such a symmetrical shape, permeable concrete can be used for the concrete block of the dish-shaped gutter. By arranging the concrete block 10 at the shoulder or the center line position in this way, rainwater or the like that has conventionally been collected through a water collection pit or the like installed at a predetermined interval can be used to spread rainwater or the like along the shoulder of the road. Water can be collected and treated in an area. Further, even when the permeable pavement and the drainage pavement are continuously laid along the road and the sidewalk, the design continuity and integrity of the entire road surface can be maintained. The amount of aggregate and cement used as the permeable concrete, and the blending thereof are achieved based on the patent right (Patent No. 2126161) and the like already obtained by the applicant.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an embodiment using a dish-shaped gutter concrete block according to the present invention.

FIG. 2 is a sectional view showing a flow of drainage of the dish-shaped gutter concrete block shown in FIG. 1;

FIG. 3 is a side view showing a modification of the shape of the dish-shaped gutter concrete block.

FIG. 4 is a partial cross-sectional view showing an example of a conventional drainage treatment structure for drainable pavement.

FIG. 5 is a partial sectional view showing another example of a conventional drainage treatment structure for drainable pavement.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roadway 2 Sidewalk 10 Dish-shaped gutter concrete block 11 Surface layer (drainage functional layer) 20 Drainage treatment layer 21 Roadbed 22 Intermediate permeable layer 24 Water guide pipe

Claims (2)

[Utility model registration claims] 1. A rainwater laid on a sidewalk boundary along a longitudinal direction of a pavement road, and formed by permeable concrete having a water-permeable gap in a drainage treatment layer laid in a lower layer. A dish-shaped gutter concrete block characterized by the following: 2. A rainwater laid on a pavement boundary along a longitudinal direction of a drainable pavement road, and rainwater flowing down a pavement surface and a drainage function layer is provided to a drainage treatment layer provided in a lower layer through a water-permeable gap. A dish-shaped gutter concrete block formed of permeable concrete having the same.