JPH0711701A - Free gradient two-piece underdrain block - Google Patents

Abstract

PURPOSE:To form a free drain gradient by providing openings or recesses in the bottom of a sectionally U-shaped waterway which is combined with a top plating having the protrusions to be engaged with the steps of the side walls of the waterway. CONSTITUTION:Plural openings 2 are formed at the bottom of a sectionally U-shaped waterway 1, and recessed steps 4 are formed inside the upper parts of the side walls of the waterway 1 to be engaged with a top plating 6. The top plating 6 is formed, which has the flat upper face, the portal lower face and protrusions 5 on both sides to be engaged with the steps 4 of the side walls of the waterway 1. The waterway 1 and the top plating 6 are combined together to place a concrete at the bottom. It is thus possible to prevent a backlash, noise and breakage when a vehicle runs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underdrain block which exposes the top surface of a top plate to the surface of the earth, and provides a simple and low-cost underdrain block which is divided into two parts so that a drainage gradient can be freely formed regardless of a road gradient. It is the one to be provided.

[0002]

2. Description of the Related Art In recent years, it has been widely practiced to provide a gutter as shown in FIG. 4 in order to drain rainwater and the like when it rains on roads, parks, plazas, etc. The plate 16 is aligned with the road surface, and the water collecting hole 1 at the end of the lid plate 16
Rainwater was collected and drained on 7 and used as the roadway surface including gutters.

However, when the vehicle travels on the lid slab 16, the wheels pass through the boundary between the gutter body and the lid slab, which causes rattling and noise, obstructing the lives of residents in the vicinity, and violently passing the vehicle. By the way, the lid plate 16 was damaged and frequently replaced. As a means for solving this, the underdrain block shown in FIG. 6 is arranged, and basins are provided at regular intervals for collecting water, and grating lids are installed thereon, but it is expensive and the water channel depth is large. Since the drainage slope is constant and the drainage slope is restricted by the road slope, rapid rainwater treatment is difficult, especially on flat land. This also applies to the gutter block of FIG.

[0004]

As described above, in the gutter block 15 and the underdrain block 20, since the water channel depth is constant, the drainage gradient must be adjusted to the road gradient. Further, as the gutter block which allows the drainage gradient to be freely set, a U-shaped gutter block 15a in which an opening 2 is formed in the bottom of the U-shaped cross section of FIG. 7 and a product end whose bottom is entirely opened are formed in a gate shape. 5 and 8 shown in FIGS. 5 and 8 are provided, and the slope of the water channel can be freely formed by driving the concrete 14 at the bottom in the field.

However, since the side wall of the U-shaped gutter block 15a shown in FIG. 7 has a cantilever structure, the wall thickness must be increased as it becomes deeper, which is uneconomical as a free-gradient gutter. In addition, since the gate-shaped gutter block 18 has the integral horizontal bearing beams 19 of the same size as the lid at both upper ends of the side wall, it takes a lot of time to place the concrete 14 on the bottom portion, which has been a problem in recent years. Contractors are shunned by lack of skilled workers. This both-sides groove block is also a system in which the lid 16 is hung on both sides, so that problems such as rattling, noise and damage due to running of the vehicle cannot be solved.

In order to freely take the drainage gradient in the underdrain block 20, the underdrain block 20 must be buried according to the drainage gradient as shown in FIG. In this case, water is collected on the road by installing an L-shaped gutter block 23 at the end of the road and grazing the upper part of the water collecting basin 21 provided at regular intervals.
The rainwater is collected on the catch lid 22, and the L-shaped block 23 that guides and drains the rainwater from the collecting basin 21 to the buried underdrain block 20 has a two-system water channel structure, which requires a lot of labor and cost for construction. .

[0007]

According to the present invention, repeated studies have been made to solve the above-mentioned problems in the prior art, and the underdrain block is divided into two parts, that is, the upper part and the lower part.
A box-type free gradient block whose upper surface is exposed to the ground surface has been successfully solved, and is as follows.

(1) A plurality of open holes or recesses are formed at the bottom of a U-shaped cross-section water channel, and a step portion 4 for fitting a top plate inside the upper side wall is provided. The upper surface is flat and the lower surface is gate-shaped. It is possible to form a free drainage gradient by combining an arch shape or a simple flat shape with a top plate having convex portions 5 at both ends for fitting with a waterway side wall portion and driving a concrete at the bottom portion. A free-gradient two-division underdrain block characterized by

(2) A free-gradient type two-divided underdrain according to the above item (1), characterized in that load bearing beams 7 made of a metal or synthetic resin material are embedded at both upper ends of the side wall. block.

(3) The upper surface of the top plate is simply V-shaped, dish-shaped,
Item (1) above, characterized in that it has a slanted or L-shaped shape, or is provided with a notch step portion for mounting a pedestrian road boundary block at the end of the V-shaped, dish-shaped or slanted shape. And a free-gradient bisection underdrain block according to the item (2).

(4) By providing slit-shaped water collecting holes 11 along the length direction of the top plate, drainage of rainwater such as roads, parks, plazas, etc. can be quickly measured over the entire waterway. (1), (2) and (3), characterized in that
A free-gradient two-part underdrain block described in paragraph.

[0012]

By forming a plurality of open holes 2 or recesses 3 at the bottom of the U-shaped water channel 1 of FIGS. 1 to 3, the entire upper surface is open, so that the concrete can be struck on the bottom at the site. Easy construction and easy formation of free drainage gradient. Also,
Since the top plate acts as a kind of tension member by fitting the concave portion 4 on the upper side wall with the convex portion 5 on the lower surface of the top plate, the load bearing capacity of the side wall portion is increased.

The top plate 6 of FIG.
By adopting an arch shape or a simple flat shape and placing it on the U-shaped cross-section waterway 1, the top surface of the top plate is aligned with the road surface and is embedded in the roadbed and is pressed and fixed by the earth pressure on the left and right. Therefore, rattling, noise, and damage due to vehicle traffic are prevented.

By embedding a metallic or synthetic resin shaped material 7 at both upper ends of the side wall in FIG. 2, a bracing material for a fixed beam is provided between the upper open surfaces of the U-shaped cross-section water channel 1,
Even under the condition that the depth of the water channel is large, the side walls can withstand the lateral pressure of the vehicle traveling on the road surface without making the both side walls particularly thick.

As shown in FIGS. 10 to 15, the top surface of the top plate is simply shaped like a V type 8, a dish type 9, an oblique type 10 and an L type 10a, so that rainwater and the like on the road surface can be quickly put on the top plate. Water can be collected in the formed culverts 8, 9 and 10. Further, by providing the slit-shaped water collecting holes 11 in the top plate, it is possible to quickly guide water to the U-shaped cross-section water channel for draining.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete product embodiment of the present invention as described above will be described with reference to the accompanying drawings. In FIG. 1, a plurality of open holes 2 are formed in the bottom of a U-shaped water channel 1 to form a side wall. A top plate 6 having a recessed step portion 4 for fitting the top plate 1 on the inside of the upper part, a flat upper surface and a gate-like bottom surface, and projections 5 for fitting the side wall of the water channel at both ends. In order to form a free drainage gradient by combining the above and the concrete 14 at the bottom, a free gradient type two-divided underdrain block is shown in a perspective view in FIG. When the concave portion 4 of the top plate 6 engages with the convex portion 5 on the lower surface of the top plate 6, the top plate 6 acts as a kind of a tension member of the U-shaped cross-section water channel 1, and the load bearing capacity against the lateral pressure of the side wall portion is increased.

FIG. 2 shows a U-shaped cross-section water channel 1 in which metallic or synthetic resin shaped material 7 is embedded in both upper ends of the side wall and a plurality of recesses 3 are formed in the bottom portion. Since it acts as a bracing member 7 fixed against lateral pressure against the like, the side wall portion of the open water channel is strengthened, and even in a water channel having a large depth, a concrete U-shaped cross section of a relatively thin layer is provided. The water channel 1 can be formed as a channel 1.
In the water channel of claim 3, a top plate 6a having a V-shaped upper surface 8 and an arch-shaped lower surface according to claim 3 is placed. Moreover, this bracing material 7 is
Almost the same effect can be obtained by connecting later using an adhesive or bolts.

FIG. 3 shows a water channel according to claim 1 in which a plurality of open holes 2 are formed in the bottom of a U-shaped water channel 1, and the top surface of the top plate of claim 2 is formed into a dish shape 9. It is a free-gradient two-part underdrain block in which a top plate 6b having a slit-shaped water collecting hole 11 formed therein is placed in the central extension direction.

Next, an example of actual use thereof will be described. FIG. 10 shows that the present invention product is installed at the boundary between the sidewalk and the roadway on a road where the sidewalk and the roadway are formed on the same road surface. The top plate is formed in a V shape 8 for quick drainage of rainwater.
A plurality of open holes 2 are provided at the bottom of the U-shaped water channel 1 on which a is placed, and a drainage gradient can be freely formed by injecting a concrete 14 on the bottom slab on site. . Rainwater collected on the top plate is introduced into a water collecting lid such as grating provided at regular intervals and drained into the water channel. Further, this top plate 6a is merely placed on the U-shaped cross-section water channel 1, but since it is buried in the roadbed and pressed by the left and right asphalt layers or backfill soil, rattling due to vehicle passage, No noise is generated and damage to the top plate is prevented. However, if the vehicle travels frequently and the safety is desired to be further increased, the connecting portion between the top plate 6 and the U-shaped cross-section water channel 1 can be integrated by using an adhesive or a connecting fitting.

In FIG. 11, the top surface of the top plate at the top is formed in a dish shape 9, and a plurality of recesses 3 are provided at the bottom of the U-shaped water channel 1 at the bottom. A drainage gradient can be formed by installing the concrete 14 on the bottom plate part at the site installed at the boundary part of the part. A slit-shaped water collection hole 11 is formed in the central portion of the top plate 6b in the length direction, and rainwater or the like can be drained uniformly and quickly over the entire road surface. In this case, since an expensive water collecting lid such as a grating lid is not required, the construction can be performed at low cost.

In addition, in the case where color flat plates, tiles, natural stones, etc. which have been subjected to various surface treatments are spread on sidewalks, streets, parks, plazas, etc., the surface of the top plate is made to harmonize with the landscape of the installation area. By forming a decorative layer, it is possible to build a waterway that does not feel strange.

12 to 15 are examples of use on a road in which the sidewalk is one step higher than the roadway, and FIG.
A plurality of recesses 3 are provided at the bottom of the U-shaped cross-section water channel 1,
The top surface of the top plate is V-shaped 8 and the water collecting hole 1 is formed in the central length direction.
1 has a structure in which a notch portion 12 is provided at an end portion and a pedestrian road boundary block 13 can be placed, and a lower surface has a gate shape. The notch 12 at the end of the top plate 6c serves to prevent the pedestrian road boundary block 13 from sinking and also to integrate the pedestrian road boundary block 13.

FIG. 13 shows a structure in which the upper surface of the upper top plate 6d has a dish shape 9 and a cutout portion 12 is provided at the end portion so that the walkway boundary block 13 can be placed, and the lower surface has an arch shape. The lower U-shaped water channel 1 has a plurality of open holes 2 at the bottom.

In FIG. 14, the upper surface of the upper top plate 6e has a slanted shape 11, and a cutout portion 12 for mounting a pedestrian road boundary block 13 is provided at an end portion thereof, and the lower surface has a flat shape.
The lower U-shaped cross-section water channel 1 has a plurality of open holes 2 at the bottom.

In FIG. 15, the upper top slab 6f is an L-shaped top slab that integrates a pedestrian road boundary block and a top slab having an oblique shape on the upper surface, and has an arch shape on the lower surface. The lower U-shaped cross-section water channel 1 has a plurality of recesses 3 at the bottom, and a drainage gradient can be freely formed by driving a concrete 14 on the bottom slab on site. This is shown in FIGS.
The same applies to 4.

[0026]

According to the first aspect of the present invention as described above, the underdrain block is divided into upper and lower halves and the lower U is used.
By forming a plurality of open holes 2 or recesses 3 at the bottom of the profiled water channel 1, the top surface of the top plate 6 can be aligned with the road surface and a free drainage gradient can be formed. The water channel can be one system, and the problems of rattling, noise and damage due to the vehicle running of the lid plate of the conventional gutter block can be solved, and the structure of the underdrain block can be simplified and its manufacturing is facilitated. Have

According to the second aspect of the invention, the depth of the water channel is increased by forming the bulging portion 7 which has the above-mentioned effects and is suitable for withstanding lateral pressure on the open surface of the U-shaped water channel 1. Even so, the side wall does not have to be made particularly thick, so that an economical product can be provided.

According to the third aspect of the present invention, the top surface of the top plate has a V-shaped, dish-shaped or L-shaped shape so that rainwater or the like on the road can be easily collected on the top plate and can be quickly drained into the water channel. Have

According to the fourth aspect of the invention, a slit-shaped water collecting hole is provided in the top plate so that water can be uniformly collected over the entire length of the water channel, and the effect is further improved. Is.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a free gradient type two-division underdrain block according to the present invention.

FIG. 2 is a perspective view showing another example thereof.

FIG. 3 is a perspective view showing still another example of the present invention.

FIG. 4 is a perspective view showing an example of a conventional gutter block and lid.

FIG. 5 is a perspective view showing another conventional gutter block and lid.

FIG. 6 is a perspective view showing an example of a conventional underdrain block.

FIG. 7 is a cross-sectional view and a vertical cross-sectional view showing an example of use of a conventional gutter block on a road having almost no slope.

FIG. 8 is a cross-sectional view and a vertical cross-sectional view showing an example of use of another conventional gutter block on a road having almost no slope.

FIG. 9 is a horizontal cross-sectional view and a vertical cross-sectional view showing an example of use of a conventional underdrain block on a road having almost no slope.

FIG. 10 is a horizontal cross-sectional view and a vertical cross-sectional view showing an example of use on a road where the sidewalk and the roadway are on the same road surface according to the present invention.

FIG. 11 is a horizontal sectional view and a vertical sectional view showing another usage example of the present invention.

FIG. 12 is a cross-sectional view showing an example of use on a road in which a sidewalk and a roadway of the present invention are divided by providing a step.

FIG. 13 is a transverse cross-sectional view showing another example of use of the present invention.

FIG. 14 is a cross-sectional view showing another example of use of the present invention.

FIG. 15 is a cross-sectional view showing another example of use of the present invention.

[Explanation of symbols]

1 U-shaped cross-section water channel 2 Open hole provided at the bottom of U-shaped cross-section channel 3 Recessed portion provided at the bottom of U-shaped cross-section channel 4 Stepped portion provided inside the upper side wall 5 Recessed portion at the bottom of the top plate 6 Top plate 6a Top plate with V-shaped upper surface and arch-shaped lower surface 6b Slit-shaped top plate with a slit-shaped water collecting hole formed in the center in the length direction 6c Top plate with slit-shaped water collecting holes and stepped portions at the ends with a V-shaped upper surface and a lower surface with a gate-shaped top 6d Top plate 6e Top plate with a sloped upper surface and a flat lower surface 6f Top plate with an L-shaped upper surface and an arched lower surface 7 Bearing beam made of metal or synthetic resin 8 V-shape on top plate top 9 Dish shape on top plate top 10 Oblique shape on top plate top 10a L-shape on top plate top 11 Slit-like shape Water hole 12 Step portion provided at the end of the top plate 13 Pedestrian boundary block 14 Bottom concrete 15 Gutter block 15a Gutter block with an open hole at the bottom 16 Lid plate 17 Water collection hole provided at the end of the lid plate 18 Gate-shaped gutter block 19 Horizontal bearing beams on both side walls 20 Underdrain block 21 Water collecting basin 22 Grating lid 23 L-shaped gutter block

Claims (4)

[Claims] 1. A U provided with a plurality of open holes or recesses at the bottom and a step for fitting a top plate inside the upper side wall.
Combining a profiled channel with a top plate with a flat upper surface and a lower surface in a gate shape, arch shape or simple flat shape with convex portions at both ends for fitting with the side wall of the water channel, and a concrete at the bottom. A free gradient type two-part underdrain block characterized by being able to form a free drainage gradient by casting. 2. The free-gradient type two-divided underdrain block according to claim 1, wherein load bearing beams formed of a metallic or synthetic resin material are embedded at both ends of the upper side wall of the U-shaped water channel. 3. The upper surface of the top plate is simply V-shaped, dish-shaped, oblique-shaped,
3. An L-shaped configuration, or a V-shaped, dish-shaped, and oblique-shaped end portion provided with a notch step portion for mounting a pedestrian road boundary block. Free gradient type underdrain block. 4. The free gradient type underdrain block according to claim 1, 2 or 3, wherein slit-shaped water collecting holes are provided along the length direction of the top plate.