JP2001279607A - Boundary block and drain treatment structure of road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a boundary block capable of preventing a downflow function from lowering due to sedimentation of soil and sand and facilitating a laying operation. SOLUTION: This boundary block 1 of generally L-shape in cross section comprises an apron part 3 and a curb part 4 installed vertically on one side of the apron part. The upper part of the apron part is inclined downward toward the curb part. An outside channel 5 formed in recessed groove shape and opened upward is formed in the curb part side upper surface of the apron part along the curb part, and a lid 2 is put on the outside channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boundary block laid along a boundary between a road and a sidewalk, and a drainage treatment structure on a road.

[0002]

2. Description of the Related Art On pavement roads such as general roads, highways and parks, drainage facilities such as gutters are provided at boundaries between roadways and sidewalks in order to prevent rainwater from staying on road surfaces. This side groove has a circular channel formed therein, and a large number of circular channel blocks having an inflow opening narrower than the width of the circular channel opened on the upper surface are continuously laid. It consists of gratings and lids. At the side edge of the pavement road, a boundary block having a substantially L-shaped cross section with a curb erected at the lower end of the apron is laid, and rainwater flowing down from the pavement is collected by the apron upper surface and then collected. Some are drained down to a basin and treated for drainage.

[0003]

By the way, a comparison between the case of constructing a drainage facility using the circular channel block and the case of constructing a drainage facility using an L-shaped boundary block at the boundary between the road and the sidewalk shows that In the case of the waterway block, since the vertical dimension of the block is larger than the vertical dimension of the L-shaped boundary block, the boundary portion must be deeply excavated. For this reason, there is a problem that the work load is larger than in the case of the L-shaped block, and the construction cost is increased.

[0004] When an L-shaped boundary block that can be constructed by excavation shallower than a circular channel block is used, the flow-down action of the conventional L-shaped boundary block is caused by a vertical gradient in a laid state (progress of a road). (Gradient in the direction), the gentler the vertical gradient, the weaker the rainwater flow down, and the accumulation of sediment and dead leaves on the apron. As a result, the flow-down function of the boundary block is further reduced, and there is a problem that rainwater tends to stay.

Accordingly, an object of the present invention is to provide a boundary block which can prevent the flow-down function from lowering due to the accumulation of earth and sand. It is another object of the present invention to provide a drainage treatment structure for a road, in which when a gutter block such as a circular channel block is used, the range of use can be shortened to facilitate the construction.

[0006]

Means for Solving the Problems The present invention has been proposed to achieve the above object, and the invention according to claim 1 has a thick plate-like apron portion and one side of the apron portion. A groove having an upright curb portion and an upper surface open at the curb portion upper surface of the apron portion in a substantially L-shaped cross-section boundary block in which the upper surface of the apron portion is inclined downward toward the curb portion side. It is a boundary block characterized in that a water-shaped outer channel is formed along a curb portion.

According to a second aspect of the present invention, the lid having the rainwater passage hole formed on the upper surface thereof is fitted into the concave outer water channel to cover the upper surface of the outer water channel. This is the described boundary block.

[0008] According to a third aspect of the present invention, there is provided a thick plate-shaped apron portion and a curb portion erected on one side of the apron portion, and the upper surface of the apron portion is inclined downward toward the curb portion side. On the curb portion side upper surface of the apron portion, a boundary block formed along the curb portion with a concave groove-shaped outer water channel with an open upper surface,
A plurality of the above-mentioned concave-shaped outer water passages are connected in a series to form an upstream drainage treatment region, and on the downstream side of the upstream wastewater treatment region, an inner water passage is formed inside and the inner water passage width is increased. A narrow inflow opening is also formed on the upper surface to form a downstream drainage treatment area in which a plurality of gutter blocks capable of drainage treatment into the water channel from the inflow opening are connected in a state where the inner water channel is formed in series. The catchment basin is connected to the inner waterway at the lower end of the slope of the downstream wastewater treatment area, and the concave outer waterway of the upstream wastewater treatment area and the inner waterway of the downstream wastewater treatment area are connected in series to form a ditch. A drainage treatment structure for a road, wherein rainwater flows from an outer waterway to an inner waterway side to drain water into the catchment basin.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of the boundary block 1 of the present invention, FIG. 2 is a side view of the boundary block 1, FIG. 3 is a perspective view of the lid 2, and FIG.

The boundary block 1 of the present invention is laid along the side of a pavement having a vertical slope (for example, a vertical slope of 2% or more), and collects rainwater flowing from the road surface to form a gutter or the like. Drainage treatment is performed by flowing down to a catch basin or the like, and is laid, for example, at the boundary between an asphalt-paved roadway and a sidewalk.

The boundary block 1 is composed of a thick plate-shaped apron 3 buried on the side of the road and a curb 4 erected on one side (sidewalk side) of the apron 3. Is a block made of non-permeable concrete having a substantially L-shaped cross section in which is inclined downward toward the curb portion 4.
A groove-shaped outer water channel 5 with an open top surface
Are formed along the curb portion 4.

For example, length 1998 mm, width 530 m
In the boundary block 1 having a height of 320 mm and a total height of 320 mm, the thickness of the apron 3 on the roadway side is 175 mm, and a curb portion 4 having a height of 150 mm and a width of 180 mm is erected on one side of the apron 3. The upper surface has a downward slope of 2% toward the curb portion 4 to form a substantially U-shaped concave outer channel 5 having a width of 88 mm along the curb portion 4. And the outer waterway 5
The lid 2 is detachably fitted to cover the upper surface opening of the outer water channel 5, and the lid 2 is removed so that the inside of the outer water channel 5 can be easily cleaned.

The outer water channel 5 is formed of a stepped support portion 6 for fitting and supporting the lid 2 inside thereof and having a substantially U-shaped cross section formed in the longitudinal direction so as to face each other. It functions as a flow path for rainwater collected by the upper surface of the water to flow down. The support portion 6 is formed such that when the lid 2 is supported, the upper surface of the lid 2 is slightly lower than or flush with the inclined lower end of the upper surface of the apron portion 3. In addition, when a rubber packing 7 is fitted in a U-shaped groove on the outer peripheral portion of the open end of the outer water channel 5 and the ends of the boundary block 1 are connected to each other and laid in series, It is configured such that rainwater in the outer water channel 5 does not leak from the joint.

As described above, since the grooved outer channel 5 is formed in a U-shape and is not depressed toward the curb portion 4 side, the curb portion 4 is not damaged even when a large load is applied. ,
The curb portion 4 is not damaged by the load on which the car or the like rides. In addition, sand and debris flowing along with rainwater from the roadway are easily washed away by the flow of rainwater, and debris and the like hardly accumulate.

The cross section of the external water channel 5 is not limited to a U-shape, but may be a horizontal U-shape, a semicircle, or an ellipse. In short, any shape may be used as long as it is formed without being depressed on the curb portion 4 side and has a cross-sectional shape capable of forming a flow path for guiding rainwater to a gutter or the like.

A recess 10 is formed in the apron section 3 at both end portions on the side of the road and on the sidewalk, and a female screw 11 is buried in the recess 10 for fitting the plate-shaped connecting member 9 so that the adjacent boundary is formed. It is a connecting portion for connecting the blocks 1 to each other.

The lid 2 is made of a stainless steel plate. As shown in FIGS. 3 and 4, the legs 2 are bent downward from both side edges of the upper surface where a number of elongated rainwater passage holes 12 are formed. Lid main body 2a, and this lid main body 2
The first connection piece 2b includes a first connection piece 2b protruding from one end and a second connection piece 2c protruding from the other end. In FIG. 3, the upper part is the lid body 2a, and the lower part is the lid body 2a.
2 shows a configuration of connection pieces 2b and 2c provided in a. A substantially U-shaped reinforcing member 2d is provided at an appropriate position inside the lid main body 2a in consideration of strength.

The two connecting pieces 2b and 2c are provided with a plate-like base 2e and a plate-like base 2e arranged in the width direction inside the lid body 2a.
e, a folded portion 2f folded in a U-shape from the both ends of the lid body 2a in the longitudinal direction of the lid body 2a, and a tongue portion 2g extending from the upper edge of the plate-like base 2e to the opposite side to the folded portion 2f, The folded portion 2f is welded to the inner surface of the side wall (leg) of the lid body 2a so that the tongue 2g protrudes from the end of the lid body 2a.

The first connecting piece 2b and the second connecting piece 2c of the two lids 2 to be connected have different heights so that the tongues 2g can overlap each other.
The first connection piece 2b of the adjacent lid 2 is set to overlap the non-contact state or the contact state on c. And
A bolt 13 as a connecting member is passed through the elongated hole 2h of the tongue 2g and fastened with a nut 14, whereby a plurality of lids 2
And the length and angle can be adjusted. Therefore, even when the boundary block 1 is laid in a straight line and also laid in accordance with the curvature of the road, the lid 2 can be bent and set in accordance with the curvature.

The boundary block 1 thus configured is
Since the rainwater from the road can be collected in the concave outer channel 5 and flow down to the downstream side by the inclined surface of the upper surface of the apron part 3, the flow of the rainwater is spread over the apron part 3 and compared. And the lid 2 can prevent earth and sand, dead leaves, and the like from flowing into the outer waterway 5.
The sediment and the like flowing into the inside can flow down to a gutter without being deposited by a fast water current. As a result, it has a drainage capacity higher than that of the conventional L-shaped boundary block 1, in other words, a stronger water guiding function, and it can be expected that sediment is reduced.

Next, the case where the boundary block 1 is connected to the catchment basin will be described. FIG. 5 is a perspective view of the water collecting basin 20, FIG. 6A is a plan view for explaining a connection state between the boundary block 1 and the water collecting basin 20, and FIG. FIG. 5 is a side view for explaining the connection state of FIG. The catch basin 20 illustrated in FIGS. 6A and 6B is a curb 2
1 is provided.

The water collecting basin 20 is a hollow substantially rectangular concrete box as shown in FIG.
It has a drainage portion 22 connected to the sewer pipe, and has, on the left and right sides, an introduction opening 23 to be connected to a circular water channel described later at a position slightly higher than the drainage portion 22, and a boundary above the introduction opening portion 23. A U-shaped water guide groove 24 connected to the outer water channel 5 of the block 1 is formed, and an opening is formed on the upper surface at a position connecting the left and right water guide grooves 24 and an apron 25 is provided in front of the opening. The lid 2 is fitted in the opening connecting the water guide groove 24, and the grating 26 is fitted in the opening of the apron 25. The apron 25 has a downwardly inclined surface (for example, a 2% gradient) that is flush with the upper surface of the apron 3 of the boundary block 1.
The curb placement surface 27 is formed toward the side 7 and is a flat surface on which the curb 21 can be placed by bonding.

FIGS. 6A and 6B show the connection between the catchment basin 20 and the boundary block 1 having such a structure.
As shown in the example, the introduction opening 23 for the circular waterway is closed by the water stop plate 29, and the U-shaped outer waterway 5 of the boundary block 1 is closed by U.
Lid 2 on the boundary block 1 side
And the lid 2 on the catchment basin 20 side are connected. In this state,
The catchment basin 20 and the boundary block 1 are arranged such that the upper surfaces thereof are flush with each other, and the outer water channel 5 of the boundary block 1 communicates with the inside of the catchment basin 20 via the water guide groove 24.

Accordingly, rainwater flowing in the outer water channel 5 of the boundary block 1 can be collected in the water collecting basin 20 and is buried from the drainage portion 22 of the water collecting basin 20 on the side of the road or the sidewalk. Wastewater can be drained to a sewer.

As described above, similarly to the conventional L-shaped boundary block, the boundary block 1 having the above configuration is connected to a plurality of sections along the boundary between the road and the sidewalk, and communicates in series with the external waterway 5. Catchment basin 2 with the lower end of the slope arranged at appropriate intervals
Although it may be connected to 0, it can also be used in combination with a gutter block such as a circular channel block. For example, as shown in FIG. 7, even in a site where it was conventionally necessary to bury a circular waterway block and perform wastewater treatment,
The boundary block 1 may be used in the upstream drainage treatment area A of the waterway, and the gutter block may be used only in the downstream wastewater treatment area B connected to the catchment basin 20. This way,
In the area where the boundary block 1 is laid, since the excavation depth is shallow, the embedding work can be reduced by that much.

First, the circular channel block 30, which is a typical gutter block, will be briefly described. As shown in FIG. 8, the circular waterway block 30 forms a waterway 31 having a substantially circular cross section as an internal waterway, and
A curb placement surface 3 on which a narrower inflow opening 32 is formed from the top to the upper surface of the circular waterway 31 and the curb 21 is placed.
3 is a block in which the inflow opening 32 is opened at the lower end of the apron 34 adjacent to the apron 3. On the upper surface of the apron 34, for example, a gradient of 2% Toward the inflow opening 32
Has a configuration in which the lid 2 is fitted similarly to the boundary block 1. The position of the inflow opening 32 is set in accordance with the position of the outer waterway 5 of the boundary block 1, and when the boundary block 1 and the circular waterway block 30 are laid at the boundary between the roadway and the sidewalk, the boundary block is set. The outer waterway 5 and the inner waterway (circular waterway 31) of the circular waterway block 30 are arranged so as to communicate in series. Although not shown in the drawings, packing is provided on the end surface of the circular waterway block 30 in the same manner as the boundary block 1 so that rainwater in the circular waterway 31 does not leak from the joint portion.

The circular waterway block 3 constructed as described above
0 and the boundary block 1 are connected as shown in FIG.
As shown in (a) and (b), the end opening of the circular waterway 31 of the circular waterway block 30 connected to the boundary block 1 is closed by a waterstop 35, and the outer waterway 5 is placed on the waterstop 35. And the circular water passage 31 are communicated with each other through the side end surface opening of the inflow opening 32. It is desirable that a U-shaped notch (not shown) corresponding to the cross-sectional shape of the outer water channel 5 be formed at the top of the water stop plate 35. Then, lid 2 on the boundary block 1 side
And the lid 2 on the side of the circular waterway block 30 are connected to form a series. In this state, the circular waterway block 30 and the boundary block 1 have the upper surfaces of the apron portions 3 and 34 flush with each other, the upper surface of the curb portion 4 and the upper surface of the curb portion 21 are flush with each other. The front end positions are also aligned, and the appearance is tidy, giving no uncomfortable feeling.

Then, a plurality of connected circular waterway blocks 3
0 is connected to the catchment basin 20 at the downstream end. In this case, the circular channel 31 of the circular channel block 30 may be directly connected to the opening of the catchment basin 20.

In this way, when the boundary block 1 is laid in the upstream wastewater treatment area A and the circular waterway block 30 is laid in the downstream wastewater treatment area B, in the upstream wastewater treatment area A where the boundary block 1 is laid. During laying work, it is not necessary to excavate as deeply as the downstream wastewater treatment area B.
The work can be reduced accordingly. In the downstream wastewater treatment area B, the rainwater collected in the upstream wastewater treatment area A is also added, so that the amount of wastewater is larger than that in the upstream wastewater treatment area A. Can be taken sufficiently large, so that wastewater treatment can be performed without any trouble. That is, as in the present embodiment, the boundary block 1 which does not have high drainage capacity but is easy to lay is laid in the upstream drainage treatment area A, and is thicker in the downstream wastewater treatment area B where high drainage capacity is required. When the circular waterway block 30 having the waterway is laid, compared with the conventional wastewater treatment structure, the required drainage capacity can be ensured while reducing the work, and the required drainage capacity and labor are rational. It is possible to provide a wastewater treatment structure that is balanced in terms of quality.

According to the present embodiment, the outer waterway 5 of the boundary block 1 and the inflow opening 32 of the circular waterway block 30 are provided.
Are connected in series with the same width, and this part is covered with a similar lid 2. Therefore, the appearance is excellent, and the length can be adjusted by the lid 2 itself. Easy.

The gutter block is not limited to the circular channel block 30 having the circular channel 31 described above. The side channel block has a water channel (inner channel) formed therein and an inflow opening narrower than the width of the inner channel. Any configuration is possible as long as it can be drained from the inflow opening into the internal waterway. For example, the cross section of the inner waterway may be formed in a polygonal shape.

Further, the present invention is not limited to the above embodiment, and various modifications are possible. For example,
As the lid 2 that covers the outer waterway 5 of the boundary block 1, a lid 2 having no connection function may be applied. That is, the lid 2 in which the first connection piece 2b and the second connection piece 2c are not formed may be applied. In short, it is sufficient if the lid 2 allows the rainwater to smoothly pass through the outer water channel 5 but does not easily enter the earth and sand or the dead leaves, and the grating may be used as the lid.

Although not shown in the drawings, the apron 3 of the boundary block 1 is provided with a non-permeable concrete in the lower layer and a permeable concrete in the upper layer.
May be composed of two layers. In this case, the rainwater collected from the road surface soaks into the permeable concrete, and the soaked rainwater flows down on the boundary surface with the impermeable concrete and is guided to the external water channel 5. In addition, the boundary surface of the upper layer of permeable concrete is arranged at a position higher than the bottom of the outer water channel 5. For example, it is preferable to arrange at the same height as the support portion 6.
This is to ensure that the outer water channel 5 functions as a flow channel.

[0034]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, in the boundary block having a substantially L-shaped cross section, a concave-groove-shaped outer water channel having an open upper surface is formed along the curb on the curb-side upper surface of the apron. By laying continuously, it is possible to configure a series of concave-groove-shaped outer water passages as flow passages. For this reason, the rainwater flowing from the road surface can flow down to the catchment basin, the gutter, and the like through the external waterway. And the external water channel can flow faster than the flow on the apron part of the conventional L-shaped boundary block. As a result, sediment, dust, and the like hardly accumulate in the portion where the rainwater flows, the drainage function can be maintained for a long time, and the cleaning work can be reduced.

According to the second aspect of the present invention, since the lid having the rainwater passage hole formed on the upper surface is fitted into the outer channel having a groove shape to cover the open upper surface of the outer channel, a relatively large foreign matter such as dead leaves is formed. Can be prevented from entering the outer waterway, and the drainage function of the outer waterway can be further maintained for a long time.

According to the third aspect of the present invention, a boundary block in which a concave groove-shaped outer water channel having an open upper surface is formed along the curb portion is formed on the upper surface of the apron portion on the curb portion side, and the outer water channel is formed as a series. Connect multiple in the state to form an upstream wastewater treatment area,
On the downstream side of the upstream drainage treatment area, a plurality of gutter blocks, each having an inner water passage formed therein and having an inflow opening narrower than the width of the inner water passage opened at the upper surface, are formed in a state where the inner water passage is formed in series. A connected downstream drainage treatment area is formed, a catchment basin is connected to the inner waterway at the lower end of the slope of this downstream wastewater treatment area, and a concave outer waterway of the upstream wastewater treatment area and a downstream wastewater treatment area The inner waterway is connected in series and rainwater flows from the concave outer waterway to the inner waterway side to drain the water into the catchment basin, that is, the drainage capacity is not high in the upstream drainage treatment area. Boundary blocks that are easy to lay are laid, and gutter blocks with thick water channels are laid in the downstream drainage treatment area where high drainage capacity is required. You don't have to dig deep Ri can be achieved a reduction in the work, yet it is possible to ensure drainage capacity required. Therefore, it is possible to provide a wastewater treatment structure in which required drainage capacity and labor are rationally balanced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a boundary block according to the present invention.

FIG. 2 is a side view of a boundary block according to the present invention.

FIG. 3 is a perspective view of a lid.

FIG. 4 is a sectional view showing a connected state of a lid.

FIG. 5 is a perspective view of a catchment basin.

FIG. 6A is a plan view illustrating a connection state between a boundary block and a catchment basin, and FIG. 6B is a side view illustrating a connection state between the boundary block and a catchment basin.

FIG. 7 is an explanatory view of a wastewater treatment structure in which a boundary block is laid in an upstream wastewater treatment area A and a gutter block is laid in a downstream wastewater treatment area B.

FIG. 8 is a perspective view of a circular waterway block.

9A is a plan view illustrating a connection state between a boundary block and a circular waterway block, and FIG. 9B is a side view illustrating a connection state between the boundary block and a circular waterway block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boundary block 2 Lid 3 Apron part 4 Curb part 5 Outer waterway 6 Support part 7 Packing 9 Connecting member 10 Depression 11 Female screw 12 Rainwater passage hole 13 Bolt 14 Nut 20 Water collecting basin 21 Curb 22 Drain part 23 Introducing opening 24 Water guide groove 25 Apron 26 Grating 27 Curb placement surface 29 Water stop plate 30 Circular channel block 31 Circular channel 32 Inlet opening 33 Curb placement surface 34 Apron 35 Water stop plate A Upstream drainage treatment area B Downstream drainage treatment area

Claims (3)

[Claims] An apron portion having a thick plate shape and a curb portion erected on one side of the apron portion, and an upper surface of the apron portion is inclined downwardly toward the curb portion to have a substantially L-shaped cross section. 3. A boundary block according to claim 1, wherein a groove-shaped outer channel having an open upper surface is formed along the curb portion on the upper surface of the apron portion on the curb portion side. 2. The boundary block according to claim 1, wherein a lid having a rainwater passage hole formed on an upper surface thereof is fitted into a groove-shaped outer water channel to cover an open upper surface of the outer water channel. 3. A curb portion of an apron portion having a thick plate-shaped apron portion and a curb portion erected on one side of the apron portion, wherein an upper surface of the apron portion is inclined downward toward the curb portion side. On the side upper surface, a plurality of boundary blocks formed with a concave groove-shaped external water channel along the curb portion with an open upper surface are connected in a state where the concave groove-shaped external water channels are formed in series, forming an upstream drainage treatment area. On the downstream side of the upstream drainage treatment area, an inner water passage is formed inside, and an inflow opening narrower than the width of the inner water passage is opened on the upper surface to enable drainage treatment from the inflow opening into the water passage. Forming a downstream drainage treatment area in which a plurality of gutter blocks are connected in a state where the above-mentioned inner waterway is formed in series, and connecting a catchment basin to the inner waterway at the lower end of the slope of the downstream drainage treatment area; Of the outer water channel in the shape of a groove and the inner water channel in the downstream wastewater treatment area. Wastewater treatment structure to shed rain water into the inner water channel side from the groove shaped outer water passage in the road, characterized in that so as to waste water treatment in the catchment basins.