Road surface forming auxiliary member and road surface forming method

Abstract

To provide a road surface forming auxiliary member that can form a road surface with a high degree of freedom, in which a drainage channel is formed and cracking is suppressed. [Solution] A through hole H1 communicating with the water storage space S1 is formed in the upper part of the water storage member 2, and the water storage space S1 is open on the lower side of the water storage member 2. A plurality of first engaging portions 24 are formed in the water storage member 2, and a second engaging portion 31 engageable with the first engaging portion 24 is formed in the wall member 3. By connecting the plurality of water storage members 2 via the wall member 3, individual spaces S2 surrounded by the plurality of water storage members 2 and the plurality of wall members 3 are formed, and by hardening the road surface molding material poured into the individual spaces S2, a road surface is formed that allows water to flow from the through hole H1 into the water storage space S1.

Description

[Technical Field]

[0001] The present invention relates to a road surface forming auxiliary member and a road surface forming method that enable a road surface having a drainage channel formed therein and being prevented from cracking to be formed with a high degree of freedom. [Background technology]

[0002] A road surface molding auxiliary member has been proposed in the past, which is characterized by comprising a main body portion in which a plurality of first through holes are formed at each of a plurality of intersections of a plurality of communicating pipes arranged in a network pattern, and a plurality of tubular portions each protruding from the main body portion and having a plurality of second through holes that communicate with each of the first through holes, and in which concrete or the like is poured into the parts of the main body portion other than the second through holes when the main body is placed on a supporting surface, thereby forming a drainage channel by the second through holes, the first through holes and the communicating pipes (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7028422 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the above road surface forming auxiliary member, the formed road surface is monolithic, which has the problem that it is prone to distortion and cracks are likely to occur in noticeable parts of the road surface.

[0005] Furthermore, with the above road surface forming auxiliary member, the formed road surface is heavily dependent on the size and shape of the road surface forming auxiliary member, and the degree of freedom in forming the road surface is low.

[0006] Therefore, the present invention aims to provide a road surface forming auxiliary member and a road surface forming method that can form a road surface with a high degree of freedom, with drainage channels formed and with reduced cracking. [Means for solving the problem]

[0007] The present invention provides a road surface molding auxiliary member that is placed on a supporting surface when molding a road surface, and that comprises a water storage member having a water storage space formed therein, and a wall member that extends approximately horizontally and can connect multiple water storage members, wherein a through hole that communicates with the water storage space is formed in the upper part of the water storage member, and the water storage space is at least partially open on the lower side of the water storage member, a plurality of first engaging portions are formed in the water storage member, and a second engaging portion that can engage with the first engaging portion is formed in the wall member, and by connecting the multiple water storage members via the wall member, individual spaces are formed that are surrounded by the multiple water storage members and the multiple wall members, and by hardening the road surface molding material poured into the individual spaces, a road surface is molded that allows water to flow into the water storage space from the through hole.

[0008] With this configuration, as the road surface molding material poured into the individual spaces hardens, it becomes possible to mold a road surface with drainage capabilities that allows water to flow into the water storage spaces through the through-holes. Since the individual spaces are defined by multiple water storage members, the road surface is not monolithic, but is divided into individual spaces, which reduces distortion and cracking of the road surface. Furthermore, since the individual spaces are formed by combining the water storage members and wall members, and there is no space for the individual spaces before combining them, the storage space required for the road surface molding auxiliary members when not in use can be reduced, and transportation is also easier.

[0009] According to another aspect of the present invention, there is provided a road surface molding auxiliary member that is placed on a supporting surface when molding a road surface, comprising: a water storage member having a water storage space formed therein; and a wall member extending laterally from the water storage member; a through hole that communicates with the water storage space is formed in the upper part of the water storage member; the water storage space is at least partially open on the lower side of the water storage member; a second engaging portion is formed in the wall member; the second engaging portion is engageable with the water storage member or wall member of another road surface molding auxiliary member; and when multiple road surface molding auxiliary members are engaged with the second engaging portion, individual spaces surrounded by multiple water storage members and multiple wall members are formed, and when the road surface molding material poured into the individual spaces hardens, a road surface is molded that allows water to flow into the water storage space from the through hole.

[0010] According to another aspect of the present invention, there is provided a road surface forming method using the above road surface forming auxiliary member. [Effects of the Invention]

[0011] According to the road surface forming auxiliary member and road surface forming method of the present invention, it is possible to form a road surface with a high degree of freedom, in which drainage channels are formed and cracking is suppressed. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of a water storage member according to an embodiment of the present invention; [Figure 2] 1 is a side view of a water storage member according to an embodiment of the present invention; [Figure 3] FIG. 1 is a plan view of a water storage member according to an embodiment of the present invention; [Figure 4] 1 is an end view of a water impoundment member according to an embodiment of the present invention; [Figure 5] 1 is a bottom view of a water storage member according to an embodiment of the present invention; [Figure 6] 1 is an explanatory diagram of a wall member according to an embodiment of the present invention; [Figure 7]1 is an explanatory diagram of a connection between a water storage member and a wall member according to an embodiment of the present invention; [Figure 8] 1 is a flowchart of a road surface molding method according to an embodiment of the present invention; [Figure 9] 1 is an explanatory diagram of a road surface formed by an embodiment of the present invention; [Figure 10] FIG. 10 is an explanatory diagram of a wall member according to a modified example of the present invention; [Figure 11] An explanatory diagram of a cross-shaped road surface forming auxiliary member according to a modified example of the present invention. [Figure 12] An explanatory diagram of a Y-shaped road surface forming auxiliary member according to a modified example of the present invention. [Figure 13] FIG. 10 is an explanatory diagram of a road surface forming auxiliary member according to a modified example of the present invention. [Figure 14] FIG. 10 is an external view of a water guide member according to a modified example of the present invention. [Figure 15] FIG. 10 is an explanatory diagram of fitting of a water guide member and a water storage member according to a modified example of the present invention; [Figure 16] 10 is an explanatory diagram of fitting of wall members of a tunnel member according to a modified example of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] A road surface forming auxiliary member 1 and a road surface forming method according to an embodiment of the present invention will be described below with reference to FIGS.

[0014] The road surface molding auxiliary member 1 is placed on a supporting surface (such as crushed stone laid on the ground) when molding a road surface using road surface molding materials such as concrete, mortar, cement, or asphalt, and as shown in Figures 1 to 7, it comprises a water storage member 2 and a wall member 3.

[0015] Resin, biodegradable plastic, etc. may be used as the material for the water storage member 2 and the wall member 3. However, when asphalt is used as the road surface molding material, it is preferable to use a heat-resistant material.

[0016] In this embodiment, the water storage member 2 is supported at its sides by three support members 21, as shown in FIGS.

[0017] As shown in Fig. 4, a water storage space S1 is formed inside the water storage member 2. In this embodiment, the water storage member 2 and the three support members 21 are internally connected, and the water storage space S1 is formed by the entire interior of each member. Note that Fig. 4 is an end view taken along line AA' in Fig. 3, but for ease of understanding, the cross section of the upper part of the water storage member 2 is also shown by a solid line.

[0018] The water storage member 2 has a through hole H1 formed in the upper portion thereof, which is in communication with the water storage space S1.

[0019] In this embodiment, as shown in Figure 3, the upper part of the water storage member 2 is cut out in an approximately T-shape, thereby forming an approximately T-shaped through hole H1 extending approximately horizontally from the water storage member 2 toward each support member 21.

[0020] Furthermore, the through hole H1 is partitioned by partitions 22 arranged at one or more positions in the extension direction of the through hole H1. In this embodiment, the partitions 22 partially connect the upper portions of the opposing side walls of the water storage member 2, thereby forming a grating structure.

[0021] The through hole H1 is intended to allow surface water to flow into the water storage space S1, but since the through hole H1 is separated at appropriate intervals by one or more partition sections 22, large debris and the like are prevented from flowing into the water storage space S1.

[0022] Furthermore, at the upper end of the water storage member 2, a first groove portion 23 is formed along the through-hole H1 extending toward each support member 21 side.

[0023] A cover member 4 for closing the through-hole H1 is provided on the top of the water storage member 2 or can be attached thereto.

[0024] In this embodiment, the through hole H1 is closed by attaching a cover member 4 to the first groove portion 23. As shown in Fig. 1, the cover member 4 may be a long piece of resin or the like having a width that fits just inside the first groove portion 23. In this embodiment, a cylindrical cover member 4 such as a rubber hose is used so that the width of the first groove portion 23 can be slightly changed.

[0025] At the lower side of the water storage member 2, the water storage space S1 is at least partially open.

[0026] In this embodiment, as shown in FIGS. 4 and 5, the water storage space S1 is open over the entire bottom surface of the water storage member 2.

[0027] Furthermore, the water storage member 2 is formed with a plurality of first engagement portions 24.

[0028] In this embodiment, as shown in FIGS. 1 and 3, a downwardly facing recess is formed as a first engagement portion 24 on the upper portion of each support member 21.

[0029] The wall member 3 extends in a substantially horizontal direction and allows a plurality of water storage members 2 to be connected together.

[0030] In this embodiment, as shown in Figure 6, the wall member 3 has a substantially rectangular shape (a triangular truncated pyramid shape in three dimensions) extending horizontally when viewed from the side, and has substantially the same height as the water storage member 2.

[0031] The wall member 3 is formed with a second engaging portion 31 that can engage with the first engaging portion 24.

[0032] Furthermore, in this embodiment, downward protrusions from the upper portions of both ends in the extending direction of the wall member 3 are formed as second engagement portions 31. Note that Fig. 6(a) is a front view of the wall member 3, and Fig. 6(b) is a side view of the wall member 3, but to make the second engagement portions 31 easier to understand, Fig. 6(b) is shown on a larger scale than Fig. 6(a).

[0033] As shown in FIG. 7, the support member 21 and the wall member 3 are shaped so that when the first engaging portion 24 and the second engaging portion 31 are engaged with each other, they come into contact with each other with almost no gap between them.

[0034] A second groove 32, which is continuous with the first groove 23 and to which the lid member 4 can be attached, is formed at the upper end of the wall member 3. In this embodiment, the second groove 32 has substantially the same height and width as the first groove 23. Because the first groove 23 and the second groove 32 are continuous, it is possible to attach the lid member 4 all at once, spanning from the first groove 23 to the second groove 32.

[0035] Furthermore, the wall member 3 is formed with an insertion hole H2 through which the rod-shaped reinforcing member B can be inserted so as to intersect with the extending direction of the wall member 3, the details of which will be described later.

[0036] It is preferable that a plurality of types of wall members 3 having different lengths in the approximately horizontal direction are prepared, and that the first engagement portion 24 is capable of engaging with any of the second engagement portions 31 of the plurality of types of wall members 3. In this embodiment, the second engagement portions 31 of the plurality of types of wall members 3 all have the same shape.

[0037] With this configuration, by connecting multiple water storage members 2 via wall members 3, individual spaces S2 are formed surrounded by multiple road surface molding auxiliary members 1 (multiple water storage members 2 and multiple wall members 3), as shown in Figure 7, and by hardening road surface molding material such as concrete poured into the individual spaces S2, a road surface is molded that has a drainage function that allows water to flow into the water storage space S1 from the through holes H1. The method of molding the road surface will be described in detail later.

[0038] 1, in this embodiment, a planar rib 25 is provided extending outward (toward the individual space S2) from the lower end of the water storage member 2 (side wall) to prevent the poured road surface molding material from flowing into the water storage space S1 from the lower end of the water storage member 2. However, the rib 25 is not essential as long as substantially the entire lower end of the water storage member 2 that forms the water storage space S1 is in contact with the placement surface.

[0039] Furthermore, as shown in Figure 7, by combining multiple water storage members 2 and wall members 3, it is possible to arrange multiple insertion holes H2 in a straight line, and rod-shaped reinforcing members B can be inserted into these linearly arranged insertion holes H2. The rod-shaped reinforcing members B work together with the hardened road surface molding material to increase the strength of the entire road surface, and could be, for example, reinforcing bars. Figure 7 shows an example in which rod-shaped reinforcing bars are arranged in a grid pattern.

[0040] In addition, by inserting the rod-shaped reinforcing member B into a plurality of insertion holes H2 arranged in a straight line, the position of the plurality of arranged road surface forming auxiliary members 1 is prevented from shifting due to unevenness, etc.

[0041] Furthermore, the insertion holes H2 also function to form crack prevention joints, the details of which will be described later.

[0042] Next, a road surface forming method using the road surface forming auxiliary member 1 will be described with reference to the flowchart of FIG.

[0043] First, on the placement surface, a plurality of water storage members 2 are connected via wall members 3 (S1). As a result, individual spaces S2 surrounded by the plurality of water storage members 2 and the plurality of wall members 3 are formed.

[0044] Next, rod-shaped reinforcing members B are inserted into the linearly arranged insertion holes H2 (S2). However, S1 and S2 may be performed in reverse order or simultaneously. For example, rod-shaped reinforcing members B may be placed on the mounting surface, and then wall members 3 may be placed so that the insertion holes H2 are positioned over the rod-shaped reinforcing members B, and then multiple water storage members 2 may be connected via the wall members 3. Furthermore, if rod-shaped reinforcing members B are not required, step S2 may be omitted.

[0045] Next, the cover member 4 is attached to the first groove portion 23 of the water storage member 2 and the second groove portion 32 of the wall member 3 (S3).

[0046] Next, the road surface molding material is poured into the individual space S2 (S4). More specifically, the road surface molding material is poured up to a height near the top of the water storage member 2. At this time, the through-hole H1 is blocked by the cover member 4, preventing the road surface molding material from flowing into the water storage space S1 through the through-hole H1. Note that if the road surface molding material can be poured in such a way that it does not flow into the through-hole H1, the step of S3 may be omitted.

[0047] Finally, by opening the lid member 4 after the road surface molding material has hardened (S5), a road surface that allows water to flow into the water storage space S1 through the through-holes H1, i.e., a road surface with drainage channels formed, is completed (S6). The lid member 4 may be opened when the road surface molding material has completely hardened, or when the road surface molding material has hardened to the extent that it does not flow into the water storage space S1 through the through-holes H1. Furthermore, if step S3 is omitted, the road surface with drainage channels formed is completed when the road surface molding material has hardened.

[0048] The road surface formed in this way is not monolithic, but is divided into individual spaces S2 as shown in Figure 9, which helps to suppress distortion and cracks.

[0049] Furthermore, the road surface molding material poured into the individual spaces S2 also flows into the insertion holes H2 (the spaces around the rod-shaped reinforcing members B), so that the road surface molding material poured into adjacent individual spaces S2 is bonded to each other via the insertion holes H2. At this time, the hardened portion of the road surface molding material that has hardened within the insertion holes H2 functions as a crack prevention joint and is more likely to crack than other portions, which also helps to prevent the road surface from cracking.

[0050] As a result of forming the road surface in this manner, surface water flowing into the water storage space S1 through the through-holes H1 of each road surface forming auxiliary member 1 seeps into the ground below the road surface, preventing environmental problems such as subsidence due to a lack of water underground. Furthermore, because the road surface formed by the road surface forming auxiliary member 1 has a drainage function, it is possible to form a level road surface without providing a water gradient for drainage. Furthermore, because the formed road surface is level, surface water is dispersed into the water storage spaces S1 of each road surface forming auxiliary member 1, allowing the surface water to seep evenly into the ground and preventing surface water from concentrating and draining in a specific area, thereby preventing environmental problems such as river flooding. Furthermore, when there is a large amount of water underground, it is stored in the water storage space S1, automatically adjusting the amount of water underground.

[0051] Furthermore, with the road surface forming auxiliary member 1 and road surface forming method having the above configuration, it is possible to form a crack-resistant road surface with drainage functions simply by combining multiple road surface forming auxiliary members 1 and pouring in road surface forming material, so it can also be used by individuals as a DIY project for forming road surfaces in parking lots, etc. In this case, by using wall members 3 of a size (horizontal length) that corresponds to the size of the road surface to be formed and the space in which the road surface will be formed, it becomes possible to form the road surface with a high degree of freedom.

[0052] As described above, in the road surface forming auxiliary member 1 and road surface forming method of this embodiment, multiple water storage members 2 are connected via wall members 3, thereby forming individual spaces S2 surrounded by multiple water storage members 2 and multiple wall members 3.

[0053] With this configuration, as the road surface molding material poured into the individual spaces S2 hardens, it becomes possible to mold a road surface with a drainage function that allows water to flow into the water storage space S1 through the through holes H1. In this case, because the individual spaces S2 are defined by multiple water storage members 2, the road surface that is molded is not monolithic but is divided into individual spaces S2, which reduces distortion and cracking of the road surface. Furthermore, since the individual spaces S2 are formed by combining the water storage members 2 and the wall members 3, and there is no space for the individual spaces S2 before they are combined, this reduces the storage space required for the road surface molding auxiliary member 1 when not in use and also makes it easier to transport.

[0054] Furthermore, in the road surface forming auxiliary member 1 and road surface forming method according to this embodiment, the first engagement portion 24 can engage with any of the second engagement portions 31 of multiple types of wall members 3 that differ in length in the approximately horizontal direction.

[0055] With this configuration, by using wall members 3 of a size (horizontal length) that corresponds to the size of the road surface to be formed and the space in which the road surface will be formed, it is possible to form the road surface with a high degree of freedom.

[0056] Furthermore, in the road surface forming auxiliary member 1 and road surface forming method according to this embodiment, a cover member 4 for closing the through-hole H1 is provided on the top of the water storage member 2 or can be attached thereto.

[0057] This configuration prevents the road surface molding material from flowing into the water storage space S1 through the through-holes H1 before the road surface molding material has hardened.

[0058] Furthermore, in the road surface forming auxiliary member 1 and road surface forming method according to this embodiment, the through hole H1 extends in a substantially horizontal direction and is partitioned by partition portions 22 arranged at one or more positions in the extension direction.

[0059] According to this configuration, large debris and the like are prevented from flowing into the water storage space S1, while surface water can flow into the water storage space S1 through the through-holes H1.

[0060] In addition, in the road surface forming auxiliary member 1 and road surface forming method according to this embodiment, a second groove portion 32 is formed at the upper end of the wall member 3, which is continuous with the first groove portion 23 and to which a cover member 4 can be attached.

[0061] With this configuration, it is possible to attach the cover members 4 together so as to span from the first groove portion 23 to the second groove portion 32. Furthermore, rainwater and the like that falls on the road surface tends to collect in the through-holes H1 from the first groove portion 23 and the second groove portion 32, so that the rainwater and the like can be efficiently drained and accumulation of rainwater and the like on the road surface is further suppressed.

[0062] Furthermore, in the road surface forming auxiliary member 1 and road surface forming method according to this embodiment, the wall member 3 is formed with an insertion hole H2 through which the rod-shaped reinforcing member B can be inserted so as to intersect with the extending direction of the wall member 3.

[0063] This configuration allows rod-shaped reinforcing members B, such as rebar, to be placed in the individual spaces S2, increasing the strength of the road surface when the road surface molding material hardens. Furthermore, by inserting the rod-shaped reinforcing members B into the linearly arranged insertion holes H2, the position of the arranged road surface molding auxiliary members 1 is prevented from shifting due to unevenness or other factors. Furthermore, the road surface molding material placed into the individual spaces S2 also flows into the insertion holes H2 (the spaces surrounding the rod-shaped reinforcing members B), and the road surface molding material placed into adjacent individual spaces S2 bonds with each other via the insertion holes H2. The road surface molding material bonded together via the insertion holes H2 in this way functions as a crack prevention joint, which also helps prevent cracking of the road surface.

[0064] The road surface forming auxiliary member and road surface forming method of the present invention are not limited to the above-described embodiment, and various modifications and improvements are possible within the scope of the claims.

[0065] For example, in the above embodiment, the lid member 4 is configured to be attachable to the top of the water storage member 2, but the lid member 4 may also be provided on top of the water storage member 2. In this case, it is possible to configure the lid member 4 to be openable, or to configure it to be opened by breaking the lid member 4. When breaking the lid member 4, it is possible to form a cut, dotted line, step, or the like at the connection part between the lid member 4 and the top of the water storage member 2, and then break the lid member 4 with a hammer, etc., to open the lid member 4.

[0066] In the above embodiment, the wall member 3 extends linearly. However, to increase the flexibility of road surface formation, the wall member 3 may be configured so that its extension direction changes midway, as shown in FIG. 10(a) (both views from above), or so that it branches in multiple directions, with second engagement portions 31 formed at each branch, as shown in FIG. 10(b). A configuration extending in multiple directions also makes it possible to form polygonal road surfaces other than rectangular. For example, as shown in FIG. 10(c), the wall member 3 branches in a Y-shape, making it possible to form a hexagonal road surface. Furthermore, as shown in FIG. 10(d), multiple wall members 3 may be configured to be connectable, further increasing the flexibility of road surface formation. In this case, the wall members 3 may be connectable by engaging the second engagement portions 31 formed on each wall member, or by providing additional engagement portions that allow the wall members 3 to be connectable.

[0067] Furthermore, in the above embodiment, three wall members 3 are connected to a water storage member 2 extending in a T-shape, thereby forming rectangular individual spaces S2 as shown in FIG. 7. However, the shape of the water storage member 2 is not limited to a T-shape, and the number of wall members 3 connected is not limited to three. For example, as shown in FIG. 11, four wall members 3 may be connectable to a water storage member 2 extending in a cross shape. In this case, four first engagement portions 24 are formed in the water storage member 2. Furthermore, as shown in FIG. 12, when three wall members 3 are connected to a water storage member 2 extending in a Y-shape, hexagonal individual spaces S2 are formed, making it possible to manufacture a hexagonal road surface.

[0068] Furthermore, in the above embodiment, no water storage space is formed in the wall member 3, but a wall-side water storage space may also be formed in the wall member 3 to increase the amount of water stored in the road surface molding auxiliary member 1. In this case, for example, as with the water storage member 2, a wall-side through-hole communicating with the internal wall-side water storage space may be formed in the upper part of the wall member 3, and the wall-side water storage space may be open at the lower part. Furthermore, the water storage member 2 and the wall member 3 may each be formed with a communication hole that communicates the water storage space S1 with the wall-side water storage space when the first engaging portion 24 and the second engaging portion 31 are engaged. In these cases, it is preferable to provide a flat rib extending outward (toward the individual space S2) from the lower end of the wall member 3 (side wall) to prevent the poured road surface molding material from flowing into the wall-side water storage space from the lower end of the wall member 3.

[0069] In addition, in the above embodiment, the water storage member 2 is supported by three support members 21, but the support members 21 are not essential. Also, the inside of the support member 21 does not have to be hollow. In that case, the inside of the support member 21 alone forms the water storage space S1.

[0070] Furthermore, in the above embodiment, the wall member 3 is engaged with the water storage member 2, but it may also be attached to the water storage member 2 from the beginning. In this case, as shown in FIG. 13 , the wall member 3 may extend laterally from the water storage member 2, and the second engagement portion 31 may be configured to be engageable with the water storage member 2 or wall member 3 of another road surface molding auxiliary member 1. When engaging the wall member 3 with the wall member 3 of another road surface molding auxiliary member 1, the second engagement portions 31 may be configured to be engageable with each other. When engaging the wall member 2 with the water storage member 2 of another road surface molding auxiliary member 1, the fourth engagement portion 26 formed on the water storage member 2 may be configured to engage with the wall member 3. Then, by engaging multiple road surface molding auxiliary members 1 with the second engagement portions 31, individual spaces S2 surrounded by multiple water storage members 2 and multiple wall members 3 are formed. Even in this case, it is possible to mold a road surface divided into individual spaces S2, while also somewhat increasing the degree of freedom in road surface molding. 13, all the second engaging portions 31 may be engaged with each other, or all the second engaging portions 31 may be engaged with the fourth engaging portions 26.

[0071] There may also be cases where surface water that has flowed into the water storage space S1 needs to be drained to a predetermined location.

[0072] Therefore, as shown in FIGS. 14 and 15, a configuration may be adopted in which the first water guide member 41 and the second water guide member 42 allow the surface water that has flowed into the water storage space S1 to be discharged to a predetermined location.

[0073] In more detail, a first water conveying member 41 having a first water conveying space S3 that runs along the water storage member 2 can be placed below the water storage member 2, and the first water conveying member 41 has a groove 41a with a width corresponding to the water storage space S1, with the interior of the groove 41a functioning as the first water conveying space S3. Then, by placing the first water conveying member 41 below the water storage member 2 so that the groove 41a faces the water storage space S1, the first water conveying space S3 communicates with the water storage space S1.

[0074] A second water-conducting member 42 having a second water-conducting space S4 that runs along the wall member 3 can be disposed below the wall member 3. The second water-conducting member 42 extends in the form of a groove or a tube along the wall member 3, with the interior of the groove or tube functioning as the second water-conducting space S4. Figures 13 and 14 show an example in which a groove 42a is formed along the wall member 3. The groove 41a of the first water-conducting member 41 and the groove 42a (or tube) of the second water-conducting member 42 have open ends, and when the water storage member 2 and the wall member 3 are engaged, the first water-conducting space S3 and the second water-conducting space S4 communicate with each other via the open ends.

[0075] If the wall member 3 does not have the insertion hole H2, the above configuration allows surface water flowing into the water storage space S1 to be guided to the desired discharge location. However, in this modification, the wall member 3 has the insertion hole H2. This may cause the road surface molding material to flow into the second water-conducting space S4 through the insertion hole H2 when poured, potentially impeding the discharge of surface water. Therefore, if the wall member 3 has the insertion hole H2, it is preferable to fit a tunnel member 5 into the insertion hole H2 to separate the interior space of the wall member 3 from the insertion hole H2, as shown in FIG. 16. However, even if the tunnel member 5 is fitted, it is preferable to form a passage space S5 inside the wall member 3 so that water can pass to the left and right of the tunnel member 5. FIG. 16 shows an example in which the passage space S5 is formed above the insertion hole H2.

[0076] Furthermore, in order to prevent the road surface molding material poured into the individual spaces S2 from flowing into the water storage space S1, the first water conveying space S3, and the second water conveying space S4, it is preferable that the water storage space S1, the first water conveying space S3, and the second water conveying space S4 are not exposed to the outside when the first water conveying member 41 and the second water conveying member 42 are respectively arranged below the water storage member 2 and the wall member 3. For example, a configuration can be considered in which the water storage space S1, the first water conveying space S3, and the second water conveying space S4 are not exposed to the outside by engaging and fixing fixing parts (e.g., engagement holes) formed on the ribs of the water storage member 2 and the wall member 3, respectively, with fixing parts (e.g., protrusions) formed on the first water conveying member 41 and the second water conveying member 42.

[0077] In this modified example, when the water storage member 2 and the wall member 3 are engaged, the first water-conducting space S3 and the second water-conducting space S4 are connected through their open ends. However, if it is desired to completely prevent the road surface molding material poured into the individual space S2 from flowing into the water storage space S1, the first water-conducting space S3, and the second water-conducting space S4, engaging portions may be provided at the respective ends of the water storage member 2 and the wall member 3.

[0078] With this configuration, it is possible to guide surface water that has flowed into the water storage space S1 to a desired discharge location by the first water guide member 41 and the second water guide member 42. The surface water guided in this way can be stored at the discharge location, making it possible to efficiently store rainwater in areas with little water.

[0079] Furthermore, in the above embodiment, the road surface forming auxiliary member 1 was placed on crushed stone laid on the ground, but it may also be placed directly on the ground, in which case the ground would correspond to the "placing surface."

[0080] Furthermore, in the above embodiment, resin, biodegradable plastic, etc. are used as the material for the water storage member 2 and the wall member 3, but other materials may also be used. [Explanation of symbols]

[0081] 1 Road surface forming auxiliary material 2 Water storage components 3 Wall components 4 Cover member 5 Tunnel members 21 Support member 22 Partition 23 First groove 24 first engagement portion 25 Ribs 26 Fourth engagement portion 31 second engagement portion 32 Second groove 41 First water conducting member 41a Groove 42 Second water conducting member 42a groove B. Rod-shaped reinforcing member H1 through hole H2 insertion hole S1 Water storage space S2 Individual space S3 First water conveyance space S4 Second water conveyance space S5 Passage space

Claims

1. A road surface forming auxiliary member that is placed on a mounting surface when forming a road surface, a water storage member having a water storage space formed therein; A wall member extending in a substantially horizontal direction, having substantially the same height as the water storage member, and capable of connecting a plurality of the water storage members; Equipped with A through hole communicating with the water storage space is formed in the upper part of the water storage member, The water storage space is at least partially open on the lower side of the water storage member, The water storage member is formed with a plurality of first engagement portions, a second engaging portion engageable with the first engaging portion is formed on the wall member; The plurality of water storage members are connected via the wall members, thereby forming individual spaces surrounded by the plurality of water storage members and the plurality of wall members, A road surface molding auxiliary member characterized in that, when the road surface molding material poured into the individual spaces hardens, a road surface is molded that allows water to flow into the water storage space through the through holes.

2. 2. The road surface forming auxiliary member according to claim 1, wherein the first engaging portion is capable of engaging with any of the second engaging portions of a plurality of types of wall members having different lengths in the approximately horizontal direction.

3. 2. The road surface forming auxiliary member according to claim 1, wherein the wall member branches in a plurality of directions when viewed from above, and the second engaging portion is formed at each branch point.

4. A cover member that closes the through hole is provided or can be attached to the upper part of the water storage member, A road surface molding auxiliary member as described in claim 1, characterized in that the cover member is opened after the road surface molding material has been poured into the individual spaces, thereby molding a road surface that allows water to flow into the water storage space through the through hole.

5. 5. The road surface forming auxiliary member according to claim 4, wherein the through-hole extends in a substantially horizontal direction and is partitioned by partition portions arranged at one or more positions in the extension direction.

6. The through hole extends in a substantially horizontal direction, A first groove portion is formed along the through hole at the upper end of the water storage member, 5. The road surface forming auxiliary member according to claim 4, wherein a second groove portion is formed at the upper end of the wall member, the second groove portion being continuous with the first groove portion and capable of receiving the cover member.

7. 2. The road surface forming auxiliary member according to claim 1, wherein the wall member has an insertion hole through which a rod-shaped reinforcing member can be inserted, the insertion hole being formed in a direction intersecting the extending direction of the wall member.

8. A first water guide member having a first water guide space along the water storage member can be disposed below the water storage member, The first water guide member has a groove having a width corresponding to the size of the water storage space, and the inside of the groove functions as the first water guide space, The first water guide member is disposed below the water storage member so that the groove faces the water storage space, and the first water guide space communicates with the water storage space, A second water guide member having a second water guide space along the wall member can be disposed below the wall member, The second water guide member extends in a groove-like or cylindrical shape along the wall member, and the interior of the groove or the cylinder functions as the second water guide space, A road surface forming auxiliary member as described in claim 1, characterized in that the grooves of the first water-conducting member and the grooves or tubes of the second water-conducting member have open ends, and when the water storage member and the wall member are engaged, the first water-conducting space and the second water-conducting space are connected via the open ends.

9. A road surface forming method using a road surface forming auxiliary member having a water storage member having a water storage space formed therein, and a wall member extending in a substantially horizontal direction, having substantially the same height as the water storage member, and capable of connecting a plurality of the water storage members, wherein an upper portion of the water storage member is formed with a through hole communicating with the water storage space, and a lower portion of the water storage member is at least partially open to the water storage space, the water storage member is formed with a plurality of first engaging portions, and the wall member is formed with second engaging portions capable of engaging with the first engaging portions, A step of connecting the plurality of water storage members via the wall members to form individual spaces surrounded by the plurality of water storage members and the plurality of wall members; A step of pouring road surface molding material into the individual spaces; Equipped with A road surface forming method characterized in that, as the poured road surface forming material hardens, a road surface is formed that allows water to flow into the water storage space through the through holes.

10. A road surface forming auxiliary member that is placed on a mounting surface when forming a road surface, a water storage member having a water storage space formed therein; a wall member having substantially the same height as the water storage member and extending laterally from the water storage member; Equipped with A through hole communicating with the water storage space is formed in the upper part of the water storage member, The water storage space is at least partially open on the lower side of the water storage member, a second engaging portion is formed on the wall member, and the second engaging portion is capable of engaging with the water storage member or the wall member of another road surface forming auxiliary member; When the plurality of road surface forming auxiliary members are engaged with the second engaging portion, individual spaces surrounded by the plurality of water storage members and the plurality of wall members are formed, A road surface molding auxiliary member characterized in that, when the road surface molding material poured into the individual spaces hardens, a road surface is molded that allows water to flow into the water storage space through the through holes.

11. A road surface forming method using a road surface forming auxiliary member having a water storage space formed therein, and a wall member having approximately the same height as the water storage member and extending laterally from the water storage member, wherein a through hole communicating with the water storage space is formed in the upper part of the water storage member, and the water storage space is at least partially open on the lower side of the water storage member, and a second engagement portion is formed in the wall member, and the second engagement portion is engageable with the water storage member or the wall member of another road surface forming auxiliary member, a step of forming individual spaces surrounded by the plurality of water storage members and the plurality of wall members by engaging the plurality of road surface forming auxiliary members with the second engaging portions; A step of pouring road surface molding material into the individual spaces; Equipped with A road surface forming method characterized in that, as the poured road surface forming material hardens, a road surface is formed that allows water to flow into the water storage space through the through holes.

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