Block for side ditch and construction method of block for side ditch

Abstract

To provide a block for a side ditch that can accommodate private land located either higher or lower than a road.SOLUTION: A block for a side ditch comprises: a bottom plate 6 extending longitudinally; a side wall 7 rising upward from one end of the long side of the bottom plate 6, having a substantially uniform thickness, and capable of receiving earth pressure from soil via its outer surface 7A; a retaining wall 8 rising upward from the other end of the long side of the bottom plate 6, having a substantially uniform thickness, and capable of receiving earth pressure from soil via its outer surface 8A; and a main block 2 forming a U-shaped flow channel 4 with the bottom plate 6, the side wall 7, and the retaining wall 8, and having a footing portion 9 projecting outwardly in a substantially horizontal direction from the outer surface 8A at the lower part of the retaining wall 8.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a block for a side gutter equipped with a footing that increases the bearing capacity of the ground. [Background technology]

[0002] Conventionally, a technique has been known in which blocks are placed at the boundary between a road and other land to form a boundary between the road and land at different ground levels. When this technique is used on residential or other civilian land (private land), the private land side is simply piled up with soil without significant compaction, and is often used for gardens or fields. Furthermore, the difference in level between the road and the private land is not made too large so that cars, tractors, etc. can enter from the road. Also, gutters are often constructed at the boundary between the private land and the road to prevent water flowing along the road from entering the private land, and blocks are often installed at the boundary to clarify the boundary with the road and to prevent private land soil from flowing onto the road.

[0003] Patent Document 1 discloses a gutter block that can be constructed at land boundaries where the land is merely piled up, such as the boundary between private land and a road, and which has an earth retaining wall integrated into the main body to maintain the difference in ground level and increase drainage capacity, thereby constructing a gutter at the land boundary and simultaneously constructing an earth retaining wall that serves as the land boundary.

[0004] In addition, to prevent the blocks installed at the boundary from easily moving even if a car or tractor drives over them, the bottom of the side wall facing the retaining wall has a horizontally extending footing that serves as a foundation, allowing it to resist the overturning moment caused by the load of the block driving over the retaining wall. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-003364 A Summary of the Invention [Problem to be solved by the invention]

[0006] The gutter blocks described in Patent Document 1 are lined up and buried along the boundary of private land, and a gutter is constructed around the perimeter of the private land. At the same time, the retaining wall of the gutter blocks forms the boundary between the private land and the road, which is one level lower than the ground level of the private land. In other words, the retaining wall of the gutter corresponds to the height of the residential land and is formed higher than the top surface of the blocks, which is the same height as the road.

[0007] Specifically, it states that the height of the earth retaining wall should be 6cm or less, and that it is desirable to keep the height of the wall to 4cm or less, especially when vehicle passage is a consideration, so it can only be used when the difference in elevation between the raised private land and the road is only a few centimeters. Therefore, it cannot be used when the private land is higher than the road but the difference in elevation is large, or even when the private land is lower than the road, which limits the places where it can be installed and reduces its versatility.

[0008] Furthermore, because the gutter blocks are U-shaped gutters with drop covers and jaws, the retaining wall of the gutter and the edge facing the retaining wall protrude outward, making the position of the boundary unclear. In addition, when backfilling the product, the protruding jaws get in the way and make compaction difficult, which creates the problem of insufficient compaction and resulting in the finished surface dropping shortly after completion.

[0009] In addition, an opening is formed in the center of the gutter block, and by covering this opening with two appropriately shaped covers, rainwater and other wastewater is allowed to flow into the channel through the opening.However, this leaves a gap between the covers and the opening that is large enough for rainwater to flow through, which creates the problem of rattling and generating noise when cars or other vehicles pass by.

[0010] Furthermore, in the case of blocks of a type known as a free-gradient gutter, the gutter block is placed on level concrete, and then invert concrete is poured on-site onto the bottom of the block. During this pouring process, the opening of the gutter block is only long enough for two lids, and the lid holders formed on the top of the left and right side walls also protrude inward, narrowing the opening, which makes it difficult to install the invert concrete.

[0011] The present invention has been made in consideration of these problems, and aims to provide a gutter block and a construction method for the gutter block that can be used whether the private land is higher or lower than the road, can clarify the position of the boundary, can minimize the risk of the finished surface dropping due to insufficient compaction, can minimize the wobbling of the cover body, and can also improve the workability of installing invert concrete. [Means for solving the problem]

[0012] The gutter block of claim 1 of the present invention is characterized by comprising a base plate extending in the longitudinal direction, side walls rising above one end of the long side of the base plate, having a substantially constant thickness and capable of withstanding the earth pressure of soil and sand on their outer surfaces, retaining walls rising above the other end of the long side of the base plate, having a substantially constant thickness and capable of withstanding the earth pressure of soil and sand on their outer surfaces, a main block which forms a U-shaped flow path with the base plate, side walls and retaining walls and which has an extension part which protrudes substantially horizontally from the outer surface of the lower part of the retaining wall, a plate-shaped cover block whose dimensions correspond to the overall length and width of the main block and which covers the upper end surfaces of the side walls and retaining walls and the U-shaped top opening, and a protrusion formed on the underside of the cover block which fits into the top opening of the main block.

[0013] The gutter block according to claim 2 of the present invention is characterized in that, in claim 1, multiple types of cover blocks are available for selection, such as a cover block with an anti-slip surface and a drain hole that communicates with the flow path of the main block, a cover block with a drain hole and a grating, and a cover block with a partition wall on the side wall of the main block.

[0014] The gutter block according to claim 3 of the present invention is characterized in that in the case of a cover block in claim 2 having a partition wall on the side wall side of the main body block, a post hole for inserting a fence post is formed in the partition wall.

[0015] The gutter block according to claim 4 of the present invention is characterized in that, in claim 1, invert concrete is provided on the inner bottom of the main body block, sloping in the longitudinal direction.

[0016] A construction method for a gutter block according to claim 5 of the present invention comprises a base slab extending in the longitudinal direction, a side wall rising above one end of the long side of the base slab, having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface, a retaining wall rising above the other end of the long side of the base slab, having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface, a main block which forms a U-shaped flow path with the base slab, side wall and retaining wall and which has an extension part which protrudes substantially horizontally from the outer surface of the lower part of the retaining wall, a plate-shaped cover block having dimensions corresponding to the overall length and width of the main block and which closes the upper end surfaces of the side wall and the retaining wall and the U-shaped upper opening, and a protrusion formed on the underside of the cover block which fits into the upper opening of the main block,

[0017] It can be used in either of the following construction modes: a mode in which a step is formed by making the depth of soil on the expansion portion on the retaining wall side deeper than the depth of soil on the side wall side, or a mode in which a step is formed by making the depth of soil on the side wall side deeper than the depth of soil on the expansion portion on the retaining wall side.When carrying out construction in which the depth of soil on the side wall side is deeper than the depth of soil on the expansion portion on the retaining wall side, it is characterized in that the depth of soil on the retaining wall side is made to be a predetermined depth or more. [Effects of the Invention]

[0018] The gutter block of claim 1 of the present invention comprises a base plate extending in the longitudinal direction, a side wall rising above one end of the long side of the base plate, having a substantially constant thickness and capable of withstanding the soil pressure of soil and sand on its outer surface, a retaining wall rising above the other end of the long side of the base plate, having a substantially constant thickness and capable of withstanding the soil pressure of soil and sand on its outer surface, and a main block in which the base plate, side wall and retaining wall form a U-shaped flow path and which has an extension portion that protrudes substantially horizontally from the outer surface of the lower part of the retaining wall.

[0019] In this way, the outer surfaces of the side walls and retaining wall can withstand the earth pressure of soil and sand, and an extension section is provided at the bottom of the retaining wall.Even if the private land side is lower than the road side and no earth pressure is applied to the side wall on the private land side but earth pressure is applied to the retaining wall on the road side, the extension section is formed integrally with the main block, and it is possible to minimize the risk of soil and sand being positioned on the extension section causing the gutter block to tip over onto the private land side.

[0020] Furthermore, even if the private land side is higher than the road side and the earth pressure on the road side retaining wall is less than the earth pressure on the side wall on the private land side, the extension section is formed integrally with the main block, and it is possible to minimize the risk of the gutter block tipping over onto the road side due to soil and sand being positioned on the extension section.

[0021] In other words, it can be installed in a variety of locations regardless of whether the private land is higher or lower than the road, making it highly versatile.

[0022] In addition, the side walls and retaining walls have a nearly constant thickness and can withstand the earth pressure of soil and sand on their outer surfaces, and the outer surfaces of the side walls or retaining walls form the boundary line, making it possible to clearly define the position of the boundary.

[0023] Furthermore, since the side walls and retaining walls have a substantially uniform thickness and are easy to compact, it is possible to prevent as much as possible the finished surface from dropping due to insufficient compaction.

[0024] Furthermore, the cover block of the present invention is plate-shaped with dimensions corresponding to the overall length and width of the main body block, and has a protrusion on its underside that fits into the top opening of the main body block, so that even if a car or other vehicle passes over the cover block, noise caused by rattling can be minimized.

[0025] Furthermore, in the gutter block according to claim 2 of the present invention, the upper surface is treated with an anti-slip coating, and multiple types of cover blocks are available for selection, such as cover blocks with drainage holes that connect to the flow path of the main body block, cover blocks with drainage holes and gratings, and cover blocks with partition walls on the side walls of the main body block.By standardizing the main body block and preparing cover blocks for each purpose, it is possible to accommodate a variety of usage patterns and improve versatility.

[0026] Furthermore, in the gutter block according to claim 3 of the present invention, in the case of a cover block having a partition wall on the side wall side of the main block, by forming post holes in the partition wall into which fence posts can be inserted, the cover block can be used as a base for the fence.

[0027] In the gutter block of claim 4 of the present invention, when invert concrete is provided at the bottom of the main block, which can set the gradient of the flow path by sloping in the longitudinal direction, the thickness of the side walls and retaining walls of the main block is almost constant, so the invert concrete can be easily transported or poured through the U-shaped opening at the top, thereby improving the workability of installation.

[0028] A construction method for gutter blocks according to claim 5 of the present invention comprises a base slab extending in the longitudinal direction, a side wall rising above one end of the long side of the base slab, having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface, a retaining wall rising above the other end of the long side of the base slab, having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface, a main block which forms a U-shaped flow path with the base slab, side wall and retaining wall and which has an extension part which protrudes substantially horizontally from the outer surface of the lower part of the retaining wall, a plate-shaped cover block having dimensions corresponding to the overall length and width of the main block and which closes the upper end surfaces of the side wall and the retaining wall and the U-shaped upper opening, and a protrusion formed on the underside of the cover block which fits into the upper opening of the main block,

[0029] It can be used in either of the following construction modes: a mode in which a step is formed by making the depth of soil on the expansion portion on the retaining wall side deeper than the depth of soil on the side wall side, or a mode in which a step is formed by making the depth of soil on the side wall side deeper than the depth of soil on the expansion portion on the retaining wall side.When construction is performed in which the depth of soil on the side wall side is deeper than the depth of soil on the expansion portion on the retaining wall side, the depth of soil on the retaining wall side must be greater than a specified depth.

[0030] In this way, the outer surfaces of the side walls and retaining wall can withstand the earth pressure of the soil and sand, and an extension section is provided at the bottom of the retaining wall, so even if the private land side is lower than the road side and no earth pressure is applied to the side wall on the private land side but earth pressure is applied to the retaining wall on the road side, the extension section is formed integrally with the main block, and soil and sand are positioned on the extension section, which makes it possible to minimize the risk of the gutter block tipping over or sliding towards the private land side.

[0031] Furthermore, even if the private land side is higher than the road side and the earth pressure on the road side retaining wall is less than the earth pressure on the side wall on the private land side, the extension section is formed integrally with the main block, and soil and sand are positioned on the extension section, which makes it possible to prevent the gutter block from tipping over or sliding onto the road side as much as possible.

[0032] Furthermore, even if the construction is such that the private land side is lower than the road side and the extension section is located on the private land side (the side with lower earth pressure), the extension section is formed integrally with the main block and there is a certain depth of soil and sand on the extension section, so it is possible to prevent the gutter block from tipping over or sliding onto the private land side as much as possible. [Brief explanation of the drawings]

[0033] [Figure 1] FIG. 1 is a perspective view of a gutter block according to the present invention. [Figure 2] FIG. 2 is a front view of the gutter block of the present invention. [Figure 3] FIG. 3 is a side view of the gutter block of the present invention. [Figure 4] FIG. 4 is a rear view of the gutter block of the present invention. [Figure 5] FIG. 5 is a side view of a main body block constituting the gutter block of the present invention. [Figure 6] FIG. 6 is a rear view of the main body block constituting the gutter block of the present invention. [Figure 7] FIG. 7 is a plan view of a cover block constituting the gutter block of the present invention. [Figure 8] FIG. 8 is a front view of a cover block constituting the gutter block of the present invention. [Figure 9] FIG. 9 is a side view of a cover block constituting the gutter block of the present invention. [Figure 10] FIG. 10 is a bottom view of a cover block constituting a gutter block of the present invention. [Figure 11] FIG. 11 shows a connector that connects the main body block and the cover block. [Figure 12]FIG. 12 is a cross-sectional view of a drainage portion formed on the cover block. [Figure 13] FIG. 13 is a plan view of a cover block provided with a grating. [Figure 14] FIG. 14 is a front view of a gutter block showing a fence installed on a cover block provided with a partition wall. [Figure 15] FIG. 15 is a side view of a gutter block showing a fence installed on a cover block provided with a partition wall. [Figure 16] FIG. 16 is a side perspective view showing the state in which invert concrete is installed in the main body block. [Figure 17] Figure 17 is a side view of a gutter block installed in a location where the private land side is lower and the road side is higher. [Figure 18] Figure 18 is a side view of a gutter block installed in an area where the private land side is higher and the road side is lower. [Figure 19] Figure 19 is a side view of a gutter block in an area where the private land side is lower and the road side is higher, showing the construction with the extension section positioned on the private land side. DETAILED DESCRIPTION OF THE INVENTION

[0034] Reference numeral 1 shown in Figures 1 to 4 is a gutter block of the present invention, which is installed, for example, between land (private land) such as residential land or farmland and a road (public or private land) to clarify the boundary between the land and form a gutter that drains rainwater from the road through a flow path (waterway or drainage channel) formed inside. Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. [Example]

[0035] This gutter block 1 consists of a main body block 2 shown in Figures 5 and 6 and a cover block 3 shown in Figures 7 to 10. The main body block 2 has a substantially U-shaped cross section, with a flow path 4 (a waterway or drainage channel) inside, and the U-shaped top opening 5 of the main body block 2 is closed by the cover block 3. The main body block 2 and cover block 3 are precast concrete blocks manufactured in advance in a factory and are constructed using the precast construction method.

[0036] <Main body block> The main block 2 that constitutes the gutter block 1 comprises a flat base plate 6 extending in the longitudinal direction, side walls 7 that rise above one end of the long side of the base plate 6, are flat and of approximately uniform thickness, and can withstand the soil pressure of soil and sand on their outer surfaces 7A, and retaining walls 8 that rise above the other end of the long side of the base plate 6, are flat and of approximately uniform thickness, and can withstand the soil pressure of soil and sand on their outer surfaces 8A, and the base plate 6, side walls 7, and retaining walls 8 form a U-shaped flow path 4.

[0037] Furthermore, a flat extension portion 9 (hereinafter referred to as the footing portion) of a substantially uniform thickness is provided, projecting substantially horizontally from the lower outer surface 8A of the retaining wall 8 of the main body block 2. This footing portion 9 has the same length dimension L as the main body block 2 and the same plate thickness as the base slab 6, with an extension dimension b set to be equal to or less than the width dimension W of the main body block 2 (base slab 6). Note that this extension dimension b can be changed appropriately in accordance with the height dimension H, length dimension L, and width dimension W of the gutter block 1, and may be larger than the width dimension W. The base slab 6, side wall 7, retaining wall 8, and footing portion 9 are integrally molded from concrete to form the main body block 2.

[0038] Additionally, the upper end surfaces 7B of the side walls 7 and the upper end surfaces 8B of the retaining walls 8 are formed flat, onto which the edge portions 10 of the cover block 3 are placed. As such, the side walls 7, the retaining walls 8, and the footing portions 9 have a simple structure of flat plates with a substantially uniform thickness, so that when manufacturing the main body block 2, it is possible to manufacture products of multiple sizes using a small number of formworks.

[0039] <Lid block> Next, the cover block 3 that constitutes the gutter block 1 is a flat plate extending in the longitudinal direction, and has dimensions corresponding to the overall length dimension L and overall width dimension W (excluding the protrusion dimension b of the footing portion 9) of the main body block 2, and covers the upper end surface 7B of the side wall 7, the upper end surface 8B of the retaining wall 8, and the U-shaped upper opening 5.

[0040] As described above, the underside of the cover block 3 is formed with edges 10 that rest on the upper end surfaces 7B of the side walls 7 and the upper end surfaces 8B of the retaining wall 8, and between these edges 10 are formed protrusions 11 that fit into the top opening 5 of the main body block 2. That is, by fitting these protrusions 11 into the top opening 5 of the main body block 2, movement of the cover block 3 in the width direction is restricted. Note that although the protrusions 11 in Figures 8 to 10 extend in the longitudinal direction, as long as they have a width dimension corresponding to the width of the top opening 5, they may be provided in multiple locations to form a rib shape with short lengths.

[0041] Furthermore, because the width dimension of the cover block 3 is the same dimension as the width dimension W of the main body block 2, the front and rear side surfaces 12 of the cover block 3 are approximately parallel to the outer surfaces 7A of the side walls 7 of the main body block 2 and the outer surfaces 8A of the retaining walls 8. Metal connectors 14 shown in Figure 11 are then attached across the side surfaces 12 of the cover block 3 and the outer surfaces 7A of the side walls 7, and across the side surfaces 12 of the cover block 3 and the outer surfaces 8A of the retaining walls 8, thereby fixing the main body block 2 and the cover block 3 together. The connectors 14 are then filled with mortar to prevent corrosion.

[0042] In the present invention, a plurality of types of lid block 3 can be prepared, and examples of lid block 3 will be described in detail below.

[0043] Figure 7 shows an example of a cover block 3 of the present invention, in which drainage grooves 15 are provided lengthwise and widthwise on the top surface 13 of the cover block 3 to prevent slipping, and drainage holes 16 are formed in four locations along the center line extending in the longitudinal direction. These drainage holes 16 expand downward as shown in Figure 12, and communicate with the flow path 4 of the main body block 2. In addition, the top surface 13 is inclined downward from the front and rear ends toward the drainage holes 16, so that drainage water is collected in the drainage holes 16.

[0044] The cover block 3 shown in Figure 13 has a metal grating 17, a lattice-shaped ditch cover, attached to the center of the cover block 3, which allows for better drainage. Gutter gratings are generally made of steel or stainless steel.

[0045] As another example, the cover block 3 shown in Figures 14 and 15 has a partition wall 18 provided on the side wall 7 of the main block on the top surface 13 of the cover block, i.e., on the front side (private land side), and this partition wall 18 has post holes 21 formed in it into which posts 20 of a fence 19 are inserted. This cover block 3 is used when the private land side is higher and the road side is lower, and when installing a fence 19 such as a guardrail, guard pipe, screen, or mesh. Guardrails and guard pipes are often installed in places that separate roads for automobiles from sidewalks.

[0046] In this way, in the present invention, multiple types of cover blocks 3 are available for selection as appropriate, such as those with an anti-slip coating on the top surface 13 of the cover block 3 and with drain holes 16 that communicate with the flow path 4 of the main body block 2, those with drain holes 16 and grating 17, those with partition walls 18 on the side walls 7 of the main body block, and those with fences 19 on the partition walls 18, so that various customer requests can be met and costs can be reduced by using the main body block 2 as a common part.

[0047] <Invert Concrete> 16, an invert concrete 22 sloping in the longitudinal direction may be provided on the inner bottom of the gutter block 1 of the present invention, i.e., on the bottom slab 6 of the main block 2. This invert concrete 22 allows the gradient of the flow path 4 to be set at a desired angle regardless of the gradient of the road.

[0048] The invert concrete 22 may be precast concrete manufactured in advance in a factory, or ready-mixed concrete may be poured on-site. In the present invention, when installing the invert concrete 22, the wide top opening 5 of the main block 2 allows for smooth loading of the precast concrete and pouring of the ready-mixed concrete.

[0049] <Construction of gutter blocks> The construction of the gutter block 1 of the present invention will be described in detail below. First, the floor is excavated to the required depth where the gutter block 1 will be installed, and crushed stone is laid over the foundation. Once the foundation is complete with crushed stone, the required number of main blocks 2 are placed on top of this foundation. The main blocks 2 are positioned using the main body protrusions 23 provided on the lower sides of the main block 2, and the gutter is formed by connecting them using connecting fittings 24 with bolts, nuts, etc. (not shown).

[0050] If the desired gradient of the flow path 4 cannot be obtained using only the main block 2, invert concrete 22 is installed, which slopes in the longitudinal direction. As mentioned above, this invert concrete 22 may be precast concrete, or ready-mixed concrete may be poured on-site.

[0051] Next, the necessary cover blocks 3 are transported and installed from among several types of cover blocks 3, namely, cover blocks 3 having an anti-slip treatment on the upper surface 13 of the cover block 3 and having drain holes 16 that communicate with the flow path 4 of the main body block 2, cover blocks 3 having drain holes 16 and gratings 17, cover blocks 3 having partition walls 18 on the side walls 7 of the main body block, and cover blocks 3 having fences 19 on the partition walls 18.

[0052] Then, the edge 10 of the cover block 3 to be installed is placed on the upper end surface 7B of the side wall 7 and the upper end surface 8B of the retaining wall 8 of the main body block 2, and the protrusion 11 of the cover block 3 is fitted into the upper opening 5 of the main body block 2. This restricts movement of the cover block 3 in the width direction. At this time, adjacent cover blocks 3 are also provided with cover protrusions 26, which prevent the cover blocks 3 from shifting from one another.

[0053] Next, as mentioned above, the front and rear side surfaces 12 of the cover block 3 are approximately parallel to the outer surface 7A of the side wall 7 of the main body block 2 and the outer surface 8A of the retaining wall 8, and metal connectors 14 are attached with bolts 25 across the side surface 12 of the cover block 3 and the outer surface 7A of the side wall 7, and across the side surface 12 of the cover block 3 and the outer surface 8A of the retaining wall 8, fixing the main body block 2 and the cover block 3 together, and the connectors 14 are filled with mortar.

[0054] After the cover block 3 is attached to the main block 2 to form the gutter block 1 as described above, the area around the gutter block 1 is backfilled with soil. During this backfilling, the side walls 7 and retaining walls 8 of the main block 2 are flat and of a uniform thickness, and are nearly parallel to the side surfaces 12 of the cover block 3, making it easy to perform compaction work and minimizing the risk of the finished surface (such as a paved surface) becoming lower after completion.

[0055] 17 to 19 show the construction state of the gutter block 1 of the present invention under different conditions.

[0056] Figure 17 shows the construction state when the private land side is lower and the road side is higher, with the side wall 7 of the gutter block 1 located on the private land side and the retaining wall 8 and footing 9 located on the road side. As a result, the weight of the soil is added to the footing 9, and the soil pressure of the soil is applied to the retaining wall 8. This makes it possible to prevent the gutter block 1 from tipping over or sliding towards the private land side as much as possible.

[0057] Figure 18 shows the construction state when the private land side is higher and the road side is lower, with the side wall 7 and partition wall 18 of the gutter block 1 located on the private land side, and the retaining wall 8 and footing 9 located on the road side. Therefore, the side wall 7 and partition wall 18 are subjected to the earth pressure of the soil on the private land side, the footing 9 is subjected to the weight of the soil on the road side, and the retaining wall 8 is subjected to the earth pressure of the soil on the road side.

[0058] In this way, even if the earth pressure of the soil and sand acting on the retaining wall 8 on the road side is smaller than the earth pressure of the soil and sand acting on the side wall 7 and partition wall 18 on the private land side, the presence of soil and sand on the road side on the footing portion 9 makes it possible to prevent the gutter block 1 from tipping over or sliding onto the road side as much as possible.

[0059] Because this product is intended for use in areas with elevation differences, various cases are anticipated, including cases where the adjacent land is private land or a road. Figure 19 shows the construction state when the private land side is lower and the private road (road) side is higher, with the footing 9 located on the private land side, with the retaining wall 8 and footing 9 of the gutter block 1 located on the private land side, and the side wall 7 on the private road side. For example, the private land may be a field and the private road is a footpath, or the private land may be a sloping area where a house or other building is to be built and the private road serves as a road to this building. In these cases, the private road where the gutter is to be installed and the private land where the footing 9 is located are often owned by the same landowner.

[0060] Construction such as this, in which the gutter block 1 is located on the private road side and the footing portion 9 on the private land side, is intended to accommodate cases in which underground electric wires, water pipes, gas pipes, etc. are buried near the private road side where the gutter is installed, and if the footing portion 9 is located on the private road side, it would interfere with the work, or it would get in the way during repair work, etc., and therefore it is not possible to place the footing portion 9 on the private road side.

[0061] However, if construction is carried out so that the footing portion 9 is located on the private land side, there is a risk that the soil pressure on the private road side will be greater than that on the private land side, and so there is a risk that the block will slide towards the private land side. For this reason, to prevent the block for the gutter 1 from sliding, a predetermined depth of soil is placed on the footing portion 9. In other words, the embedment depth of the block for the gutter 1 is set to a depth that will prevent it from sliding.

[0062] In this way, even if the private land side is lower and the private road side is higher, and the footing portion 9 is located on the private land side, the side wall 7 will be subjected to the soil pressure of the soil on the private road side, but the footing portion 9 will be subjected to the weight of the soil on the private land side to a certain depth, and the retaining wall 8 will be subjected to the soil pressure of the soil on the private land side to a certain depth, so it is possible to prevent the gutter block 1 from tipping over or sliding onto the private land side as much as possible.

[0063] As described above in detail, the gutter block 1 of claim 1 of the present invention comprises a base slab 6 extending in the longitudinal direction, a side wall 7 rising upward from one end of the long side of the base slab 6, having a substantially constant thickness and capable of withstanding the soil pressure of soil and sand on its outer surface 7A, a retaining wall 8 rising upward from the other end of the long side of the base slab 6, having a substantially constant thickness and capable of withstanding the soil pressure of soil and sand on its outer surface 8A, and a main block 2 which forms a U-shaped flow path 4 with the base slab 6, side wall 7 and retaining wall 8, and which has a footing portion 9 protruding substantially horizontally from the outer surface 8A at the bottom of the retaining wall 8.

[0064] In this way, the outer surfaces 7A, 8A of the side wall 7 and the retaining wall 8 can withstand the earth pressure of the soil and sand, and since a footing portion 9 is provided at the bottom of the retaining wall 8, even if the private land side is lower than the road side and no earth pressure is applied to the side wall 7 on the private land side but earth pressure is applied to the retaining wall 8 on the road side, the footing portion 9 is formed integrally with the main block 2, and soil and sand are positioned on the footing portion 9, which makes it possible to prevent the gutter block 1 from tipping over onto the private land side as much as possible.

[0065] Furthermore, even if the private land side is higher than the road side and the earth pressure acting on the retaining wall 8 on the road side is smaller than the earth pressure acting on the side wall 7 on the private land side, the footing portion 9 is formed integrally with the main block 2, and soil and sand are positioned on the footing portion 9, thereby preventing the gutter block 1 from tipping over onto the road side as much as possible.

[0066] In other words, it can be installed in various locations regardless of whether the private land is higher or lower than the road, making it highly versatile. This product can be installed not only to prevent rain that falls on one's own land from flowing into neighboring land, but also when there is a difference in elevation within one's own facilities.

[0067] In addition, the side wall 7 and the retaining wall 8 have a substantially constant thickness, and can withstand the earth pressure of the soil on their outer surfaces 7A, 8A. Since the outer surfaces 7A, 8A of the side wall 7 or the retaining wall 8 form the boundary line, the position of the boundary can be clearly defined.

[0068] Furthermore, the side walls 7 and the retaining walls 8 have a substantially uniform thickness and are easy to compact, so that it is possible to prevent as much as possible the finished surface from dropping due to insufficient compaction.

[0069] Furthermore, the cover block 3 of the present invention is plate-shaped with dimensions corresponding to the overall length and width of the main body block 2, and is provided with a protrusion 11 on its underside that fits into the top opening 5 of the main body block 2. Therefore, even if a car or the like passes over the cover block 3, noise caused by rattles can be minimized.

[0070] Furthermore, in the gutter block 1 according to claim 2 of the present invention, a plurality of types of cover blocks 3 are available for selection, such as a cover block 3 with an anti-slip upper surface and a drain hole 16 that communicates with the flow path 4 of the main body block 2, a cover block 3 with a drain hole 16 and a metal grating 17, and a cover block 3 with a partition wall 18 on the side wall 7 of the main body block. By standardizing the main body block 2 and preparing cover blocks 3 for each purpose, it is possible to accommodate a variety of usage patterns and improve versatility.

[0071] Furthermore, in the gutter block 1 according to claim 3 of the present invention, in the case of a cover block 3 having a partition wall 18 on the side wall 7 of the main block, by forming a support hole 21 in the partition wall 18 into which a support post 20 of the fence 19 is inserted, the cover block 3 can be used as a base for the fence 19.

[0072] In the gutter block 1 of claim 4 of the present invention, when invert concrete 22 is provided at the bottom of the main block 2, which can set the gradient of the flow path 4 by sloping in the longitudinal direction, the thickness of the side walls 7 and retaining walls 8 of the main block 2 is approximately constant, so the invert concrete 22 can be easily transported or poured through the U-shaped top opening 5, thereby improving the workability of installation.

[0073] A construction method for a gutter block (1) according to claim 5 of the present invention includes a base slab (6) extending in the longitudinal direction, a side wall (7) rising upward from one end of the long side of the base slab (6), having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface (7A), a retaining wall (8) rising upward from the other end of the long side of the base slab (6), having a substantially uniform thickness and capable of withstanding earth pressure on its outer surface (8A), a main block (2) which forms a U-shaped flow path (4) with the base slab (6), side wall (7) and retaining wall (8) and which has a footing (9) extending substantially horizontally from the outer surface (8A) below the retaining wall (8), a plate-shaped cover block (3) having dimensions corresponding to the overall length and width of the main block (2) and which closes the upper end surfaces (7B, 8B) of the side wall (7) and the retaining wall (8) and the U-shaped top opening (5), and a protrusion (11) formed on the underside of the cover block (3) which fits into the top opening (5) of the main block (2),

[0074] It can be used in either of the following construction modes: a mode in which a step is formed by making the depth of soil on the footing portion 9 on the retaining wall 8 side deeper than the depth of soil on the side wall 7 side, or a mode in which a step is formed by making the depth of soil on the side wall 7 side deeper than the depth of soil on the footing portion 9 on the retaining wall 8 side.When construction is performed in which the depth of soil on the side wall 7 side is deeper than the depth of soil on the footing portion 9 on the retaining wall 8 side, the depth of soil on the retaining wall 8 side must be a specified depth or more.

[0075] In this way, the outer surfaces 7A, 8A of the side wall 7 and the retaining wall 8 can withstand the earth pressure of the soil and sand, and since a footing portion 9 is provided at the bottom of the retaining wall 8, even if the private land side is lower than the road side and no earth pressure is applied to the side wall 7 on the private land side but earth pressure is applied to the retaining wall 8 on the road side, the footing portion 9 is formed integrally with the main block 2, and the soil and sand are positioned on the footing portion 9, which makes it possible to prevent the gutter block 1 from tipping over or sliding towards the private land side as much as possible.

[0076] Furthermore, even if the private land side is higher than the road side and the earth pressure acting on the retaining wall 8 on the road side is smaller than the earth pressure acting on the side wall 7 on the private land side, the footing portion 9 is formed integrally with the main block 2, and soil is positioned on the footing portion 9, thereby making it possible to prevent the gutter block 1 from tipping over or sliding onto the road side as much as possible.

[0077] Furthermore, even if the construction is carried out so that the private land side is lower than the road, i.e., the private road side, and the footing portion 9 is positioned on the private land side (the side with lower earth pressure), the footing portion 9 is formed integrally with the main block 2, and there is a predetermined depth of soil on the footing portion 9, so it is possible to prevent the gutter block 1 from tipping over or sliding onto the private land side as much as possible. [Explanation of symbols]

[0078] 1. Gutter blocks 2 Body Block 3 Lid block 4 Flow path 5 Top opening 6 bottom plate 7 side wall 7A Outer surface 7B Upper end surface 8 Earth retaining wall 8A outer surface 8B Top end surface 9 Footing 10 Edge 11 Convex part 12 Side 13 Top side 14 Connectors 15. Drainage Ditch 16 Drain hole 17 Grating 18 Partition Wall 19. Fence 20 pillars 21 Post holes 22 Invert Concrete 23 Main body protrusion 24 Connection hardware 25 volts 26 Lid protrusion W Width dimension of gutter block and main block H Height dimension of gutter block L Length of gutter block and main block b Overhang dimension of footing

Claims

1. a bottom plate extending in a longitudinal direction; a side wall that rises above one end of the long side of the base slab, has a substantially constant thickness, and is capable of withstanding the earth pressure of soil and sand on its outer surface; a retaining wall that rises above the other end of the long side of the base slab, has a substantially constant thickness, and is capable of withstanding the earth pressure of soil and sand on its outer surface; The base plate, side walls, and retaining wall form a U-shaped channel, and the main block has an extension that extends horizontally from the outer surface of the lower part of the retaining wall. a plate-shaped cover block having dimensions corresponding to the overall length and width of the main body block, which covers the upper end surfaces of the side walls and the retaining wall and the U-shaped upper opening; a projection formed on the underside of the cover block and adapted to fit into the opening on the top surface of the main body block.

2. A gutter block according to claim 1, characterized in that a plurality of types of cover blocks are available for selection, such as a cover block with an anti-slip upper surface and a drainage hole that communicates with the flow path of the main block, a cover block with a drainage hole and a grating, and a cover block with a partition wall on the side wall of the main block.

3. 3. A gutter block according to claim 2, wherein in the case of a cover block having a partition wall on the side wall side of the main block, a post hole for inserting a fence post is formed in the partition wall.

4. 2. A gutter block according to claim 1, wherein an invert concrete inclined in the longitudinal direction is provided on the inner bottom of the main body block.

5. a bottom plate extending in a longitudinal direction; a side wall having a substantially constant thickness rising above one end of the long side of the bottom plate; a retaining wall that rises above the other end of the long side of the base slab, has a substantially constant thickness, and is capable of withstanding the earth pressure of soil and sand on its outer surface; The base plate, side walls, and retaining wall form a U-shaped channel, and the main block has an extension that extends horizontally from the outer surface of the lower part of the retaining wall. a plate-shaped cover block having dimensions corresponding to the overall length and width of the main body block, which covers the upper end surfaces of the side walls and the retaining wall and the U-shaped upper opening; a protrusion formed on the underside of the cover block that fits into the top opening of the main body block; Construction in a manner in which a step is formed by making the depth of the soil on the expansion part on the retaining wall side deeper than the depth of the soil on the side wall side; Construction in which a step is formed by making the depth of the soil on the side wall deeper than the depth of the soil on the expansion part on the retaining wall side; It can be used in any of the above modes, A construction method for gutter blocks, characterized in that when construction is performed in a manner in which the depth of soil on the side wall side is deeper than the depth of soil on the expansion portion on the retaining wall side, the depth of soil on the retaining wall side is made to be a predetermined depth or more.

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