Mounting structure

Abstract

To provide a pavement structure that allows for rainfall countermeasures as well as continuous heat countermeasures.SOLUTION: A pavement structure at least has a wet pavement region and a water permeable pavement region. The wet pavement region at least has a wet surface layer 3 forming a road surface and a pumping layer 31 that is provided beneath the wet surface layer and can supply moisture to the wet surface layer by a capillary phenomenon. The water permeable pavement region at least has a water permeable surface layer 2 forming a road surface and a water permeable roadbed layer 21 that is provided beneath the water permeable surface layer and can reserve moisture permeating through the water permeable surface layer. The water permeable roadbed layer is connected through a connecting part to the pumping layer and the moisture reserved in the water permeable roadbed layer can be introduced through the connecting part to the pumping layer.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a paving structure that enables both rain countermeasures and heat countermeasures.

Background Art

[0002] Conventionally, there is a wet paving method in which fine-grained materials are filled in the voids of porous asphalt paving, and the capillary action of the water supplied to the lower surface of the paving keeps the road surface in a wet state, suppressing the rise in road surface temperature as the water evaporates. There is also a permeable paving method in which rainwater during rainfall penetrates into the roadbed and roadbed through the voids of the porous asphalt paving. These have different paving structures and functions from each other.

[0003] Some inventions have been disclosed that attempt to composite wet paving and permeable paving, which have different paving structures and functions from each other as described above. For example, in Patent Document 1, as shown in FIG. 1 of the document, one is a permeable paving made of open-graded asphalt, and the other is a water-retaining paving in which the voids of the open-graded asphalt are filled with water-retaining cement milk. With a common lower layer structure, an invention is disclosed in which a base layer containing soil cement is provided, a water-retaining support is provided in the lower layer thereof, and a water barrier layer is provided in the lowermost layer.

[0004] In addition, Patent Document 2 discloses an invention in which, as shown in FIG. 1 of the document, an aggregate layer and a water-absorbing material layer are formed on the upper layer of an impermeable layer, and a water-retaining block and a permeable block are woven and laid on the upper part thereof.

[0005] Furthermore, Patent Document 3 discloses an invention in which, as shown in FIG. 1 of the document, a water-retaining region and a permeable region are formed on the surface layer, a water-retaining diffusion layer is formed on the lower layer of the surface layer, and a roadbed is formed on the lower layer thereof.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] However, although the above-described conventional paving structure includes both a region having a water retention function and a region having a water permeability function in the surface layer portion, the paving structure of the lower layer below the surface layer is common. Therefore, in particular, there are problems such as the inability to sufficiently and smoothly store rainwater permeated from the surface layer portion, and the inability to penetrate a large amount of rainwater into the roadbed during heavy rain, and there is a high possibility that the heat mitigation effect cannot be continuously obtained.

[0008] That is, in the invention disclosed in Patent Document 1, since the base layer of the permeable paving has the same capillary action as the base layer of the water-retaining paving, there is a possibility that a sufficient water permeability function cannot be obtained during heavy rain. Furthermore, since a water barrier layer is provided below the permeable paving in the same manner as the water-retaining paving, it takes a considerable amount of time until the stored rainwater disappears, and when heavy rain occurs again, the rainwater storage capacity is small, and there is a problem that rainwater is surface-drained on the surface of the permeable paving.

[0009] Also, in the invention disclosed in Patent Document 2, since the permeable block is also laid on the water-absorbing material layer for replenishing moisture in the same manner as the water-retaining block, there is a possibility that a sufficient water permeability function cannot be obtained during heavy rain. Furthermore, since an impermeable layer is provided below the permeable block in the same manner as the water-retaining block, it takes a considerable amount of time until the stored rainwater disappears, and when heavy rain occurs again, the rainwater storage capacity is small, and there is a problem that rainwater is surface-drained on the surface of the permeable block.

[0010] In addition, in the invention disclosed in Patent Document 3, since the water-permeable region is also laid on the water-retaining diffusion layer for retaining rainwater in the same manner as the water-retaining region, there is a possibility that a sufficient water-permeable function cannot be obtained during heavy rain. Further, as shown in FIG. 1 and the like, the water-retaining diffusion layer is composed of a very thin layer, and a sufficient amount of rainwater storage that can supply moisture to the water-retaining region for a long time is not ensured.

[0011] Therefore, in view of the various problems of the above-described prior art, an object of the present invention is to provide a paving structure that enables rain countermeasures and continuous heat countermeasures during hot weather.

Means for Solving the Problems

[0012] (1) The invention according to (1) is a paving structure having at least a wet paving region and a water-permeable paving region, wherein the wet paving region includes at least a wet surface layer forming a road surface and a pumping layer provided below the wet surface layer and capable of supplying moisture to the wet surface layer by capillary action, and the water-permeable paving region includes at least a water-permeable surface layer forming a road surface and a water-permeable roadbed layer provided below the water-permeable surface layer and capable of storing moisture that has penetrated the water-permeable surface layer, and the water-permeable roadbed layer is connected to the pumping layer via a connection portion, and the moisture stored in the water-permeable roadbed layer can be conducted to the pumping layer via the connection portion.

[0013] According to the invention according to (1) above, while allowing rainwater during rainfall to penetrate into the roadbed and exerting the original function as a water-permeable paving, it is possible to continuously obtain the cooling effect of the wet paving even on sunny days by using the rainwater stored in the water-permeable roadbed layer. In particular, since it is possible to penetrate rainwater into the roadbed and store rainwater, the storage capacity of the water-permeable roadbed layer can be sufficiently ensured by the next rainfall, and it is possible to effectively function against heavy rain that frequently occurs in recent years.

[0014] (2) The invention according to (2) is the paving structure according to (1) above, in which the water-permeable roadbed layer is formed with a water-permeable region that allows the water stored in the water-permeable roadbed layer to penetrate into the roadbed, and an impermeable region that prevents the water stored in the water-permeable roadbed layer from penetrating into the roadbed.

[0015] According to the invention according to (2) above, it is possible to limit the amount of rainwater that penetrates from the water-permeable roadbed layer into the roadbed, and it is possible to conduct water to the pumping layer for a longer time and supply water to the wet surface layer. Further, it is possible to set the ratio of the water-permeable region and the impermeable region in the water-permeable roadbed layer according to the water permeability of the current ground and the drainage design of the site, and it is possible to finely adjust the amount of rainwater stored in the water-permeable roadbed layer.

[0016] (3) The invention according to (3) is the paving structure according to (2) above, in which the height of the bottom surface of the water-permeable roadbed layer in the impermeable region is lower than the height of the bottom surface of the water-permeable roadbed layer in the water-permeable region.

[0017] According to the invention according to (3) above, it is possible to collect rainwater in the impermeable region and store a predetermined amount of rainwater without allowing it to penetrate into the roadbed. Thereby, even when there has been no rainfall for some time, it is possible to reliably store a predetermined amount of rainwater and continuously supply water to the wet surface layer.

[0018] (4) The invention according to (4) is the paving structure according to (2) or (3) above, in which the connecting portion includes a water-conducting member that can conduct the water stored in the water-permeable roadbed layer to the pumping layer, and one side of the water-conducting member is connected to the pumping layer, and the other side of the water-conducting member is connected to the impermeable region of the water-permeable roadbed layer.

[0019] According to the invention according to the above (4), for example, even when a curb, a planting zone, or the like is constructed on the ground between a wet pavement area and a permeable pavement area, the water stored in the permeable roadbed layer can be surely conducted to the pumping layer through the installed water conducting member. Further, by means of the water conducting member, it is possible to continuously conduct the water stored in the permeable roadbed layer to the pumping layer even on a sunny day.

[0020] (5) The invention according to (5) is the paving structure according to the above (2) or (3), wherein the connecting portion includes a water conducting member capable of conducting the water stored in the permeable roadbed layer to the pumping layer, and the water conducting member includes a bottom water conducting member having one end connected to the pumping layer and the other end connected to the impermeable region of the permeable roadbed layer, and an upper water conducting member provided above the bottom water conducting member and having one end connected to the pumping layer and the other end connected to the impermeable region of the permeable roadbed layer.

[0021] According to the invention according to the above (5), even when a curb, a planting zone, or the like is constructed on the ground between a wet pavement area and a permeable pavement area, the water stored in the permeable roadbed layer can be surely conducted to the pumping layer through the installed bottom water conducting member and upper water conducting member. Further, in addition to the bottom water conducting member, by providing an upper water conducting member further above it, when a large amount of rainwater is stored in the permeable roadbed layer, it is possible to introduce the rainwater from the upper water conducting member to the pumping layer. With such a configuration, it is possible to prevent a situation where water permeation to the roadbed cannot keep up with a long rain or a heavy rain, the water level of the permeable roadbed layer rises, and the permeable pavement area is flooded. In addition, when the water level of the permeable roadbed layer rises, rainwater can be stored between the permeable roadbed layer and the pumping layer through the upper water conducting member, so that the function of coping with heavy rain can be enhanced.

[0022] (6) The invention according to (6) is the paving structure according to the above (5), wherein the water conducting cross-sectional area of the upper water conducting member is larger than the water conducting cross-sectional area of the bottom water conducting member.

[0023] According to the invention according to the above (6), in addition to the effect according to the above (5), when there is a large amount of rainfall in a short time due to heavy rain or the like and a large amount of rainwater is stored in the permeable roadbed layer in a short time, it is possible to quickly reduce the storage amount of the permeable roadbed layer, and the permeable function of the permeable pavement area can be maintained well.

[0024] (7) The invention according to (7) has an inlet closing means capable of closing the inlet of the upper water guiding member, and the inlet closing means can open and close the inlet of the upper water guiding member according to the storage amount of moisture in the permeable roadbed layer, which is the paving structure according to the above (5) or (6).

[0025] According to the invention according to the above (7), since the inlet of the upper water guiding member can be opened and closed by the inlet closing means according to the storage amount of moisture in the permeable roadbed layer, it is possible to prevent the rainwater stored in the permeable roadbed layer from being excessively conducted to the pumping layer, and it is possible to continuously supply the necessary amount of moisture to the wet surface layer by the bottom water guiding member.

[0026] (8) The invention according to (8) is the paving structure according to any one of the above (4) to (7), wherein the water guiding member is provided with a water treatment material capable of removing nutrient salts.

[0027] According to the invention according to the above (8), it is possible to purify the rainwater that has penetrated and been stored in the permeable pavement area and supply it to the wet pavement area.

[0028] (9) The invention according to (9) is the paving structure according to any one of the above (4) to (8), wherein the water guiding member is installed in a manhole or a side ditch that can enter and exit from the ground part in an exchangeable manner.

[0029] According to the invention according to the above (9), it is possible to facilitate the replacement and maintenance of the water guiding member.

[0030] The invention according to (10) is the paving structure according to any one of (1) to (9) above, wherein a water-permeable sheet capable of supplying moisture to the wet surface layer and a water supply pipe capable of supplying moisture to the water-permeable sheet are provided below the wet surface layer.

[0031] According to the invention according to (10), even when, for example, sunny days continue and the rainwater stored in the permeable roadbed layer runs out, tap water or the like is supplied to the water supply pipe to supply moisture to the water-permeable sheet, so that the wet paving area can be continuously functioned.

Brief Description of the Drawings

[0032]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0033] Hereinafter, each embodiment of the pavement structure of the present invention will be described with reference to the drawings.

[0034] (Standard Structure of Pavement Structure) As a standard cross-sectional view showing an embodiment of the pavement structure of the present invention, FIG. 1(a) shows a cross-sectional view showing each component of the pavement structure 1, FIG. 1(b) shows a cross-sectional view showing the state during rainfall, and FIG. 1(c) shows a cross-sectional view showing the state on a sunny day.

[0035] Specifically, the pavement structure 1 of this embodiment is at least composed of a wet pavement area and a permeable pavement area. The wet pavement area includes a wet surface layer 3 that forms the road surface, and below the wet surface layer 3, at least a pumping layer 31 capable of supplying moisture to the wet surface layer 3 by capillary action is provided. As the wet surface layer 3, known water-retaining pavements and the like can be applied. For example, block pavements having a water-retaining function, pavements in which voids of asphalt pavements are filled with water-retaining materials, and the like, so-called wet pavements can be used.

[0036] In addition, the water-raising layer 31 of the present embodiment is composed of sand or sand bags, and can carry the retained moisture upward by capillary action to supply moisture to the wet surface layer 3.

[0037] The permeable paving area includes a permeable surface layer 2 that forms the road surface, and at least a permeable roadbed layer 21 capable of storing the moisture that has penetrated the permeable surface layer 2 is provided below the permeable surface layer 2. The permeable surface layer 2 of the present embodiment uses open-graded asphalt paving, but any known paving material can be appropriately used as long as it has a permeable function.

[0038] In addition, the permeable roadbed layer 21 of the present embodiment has a thickness of 250 mm and is formed by spreading crushed chestnut stones with a particle size of 50 to 150 mm and No. 5 crushed stones (particle size 13 to 20 mm) as a packing material. With such a configuration, it is possible to store the moisture that has penetrated the permeable surface layer 2 in the permeable roadbed layer 21, and after a certain period of time, it is possible to penetrate the moisture into the roadbed. Note that the constituent materials of the permeable roadbed layer 21 are not necessarily limited to the above-mentioned particle sizes, and can be appropriately adjusted as long as they can smoothly penetrate and store the rainwater that has penetrated the permeable surface layer 2 due to rainfall.

[0039] As shown in FIG. 1(a), the above-mentioned permeable roadbed layer 21 and the water-raising layer 31 are connected via a connection part, and the moisture stored in the permeable roadbed layer 21 can be conducted to the water-raising layer 31 via the connection part. In the present embodiment, it is configured to be water-conductive via a water-permeable sheet 60.

[0040] Note that it is not necessarily limited to a sheet-like material, and a screen made of nylon, plastic, metal, etc. may be installed. Also, when sand bags are used in the water-raising layer 31, the shape of the water-raising layer 31 is easy to maintain and the outflow of sand can be suppressed, so the sheet 60 is not necessarily essential.

[0041] Next, the function of the pavement structure of this embodiment will be described. As shown in Fig. 1(b), rainwater during rainfall permeates the permeable surface layer 2, and while permeating the permeable roadbed layer 21, the rainwater is stored in the voids of the roadbed material. The stored rainwater gradually permeates into the roadbed as shown by the dashed arrow in the figure, and performs the function of permeable pavement. Meanwhile, the rainwater stored in the permeable roadbed layer 21 is guided to the water pumping layer 31 through the connection part, and is retained in the water pumping layer 31.

[0042] In this embodiment, as shown in each diagram in FIG. 1, a rainwater drainage pipe 6 is provided connecting the pumping tank 31 and a rainwater drainage facility (not shown). When a large amount of rainwater flows into the pumping tank 31 and exceeds the water retention capacity that the pumping tank 31 can tolerate, the water can be drained through the rainwater drainage pipe 6.

[0043] As shown in FIG. 1(c), on sunny days, the rainwater stored in the permeable roadbed layer 21 can be used to transport the rainwater held in the pumping layer 31 upwards by capillary action, thereby supplying moisture to the wet surface layer 3.

[0044] With the above-mentioned configuration of this embodiment, rainwater during rainfall can be infiltrated into the roadbed to perform its original function as a permeable pavement, and the stored rainwater can be used to continuously obtain the cooling effect of the wet pavement even on sunny days. In particular, as described above, the permeable pavement of this embodiment is capable of storing rainwater while allowing it to infiltrate into the roadbed, so that the storage capacity of the permeable roadbed layer 21 can be sufficiently secured by the time of the next rainfall, and it is possible to effectively function in heavy rains that have become frequent in recent years. In addition, as shown in FIG. 1 and the like, the pavement structure of this embodiment is constructed by constructing the roadbed in both the wet pavement area and the permeable pavement area, and then constructing the pumping layer 31 and the permeable roadbed layer 21. In other words, since it has a cross-sectional structure equipped with a roadbed and roadbed as in a general road, it is possible for vehicles to pass through the pavement surface.

[0045] (Variation 1) Next, FIG. 2 shows a modified example of the above-described embodiment. That is, as shown in FIG. 2(a), a water barrier sheet 42 is installed on a part of the bottom surface of the permeable roadbed layer 21 to form an impermeable region that makes it impossible for the moisture stored in the permeable roadbed layer 21 to penetrate into the roadbed, and a permeable sheet 41 that allows the moisture stored in the permeable roadbed layer 21 to penetrate into the roadbed is installed to form a permeable region.

[0046] With such a configuration, as shown in FIG. 1(b), it becomes possible to limit the amount of rainwater that penetrates from the permeable roadbed layer 21 into the roadbed, and it becomes possible to conduct water to the pumping layer 31 for a longer time and supply moisture to the wet surface layer 3. In addition, by setting the laying ratio of the water barrier sheet 42 and the permeable sheet 41 on the bottom surface of the permeable roadbed layer 21 according to the permeability of the existing ground and the drainage design of the site, it becomes possible to finely adjust the amount of rainwater stored in the permeable roadbed layer 21. In addition, by using the water barrier sheet 42 and the permeable sheet 41 in combination, it is possible to ensure rainwater that is conducted to the pumping layer 31 on sunny days in the permeable roadbed layer 21, and to prevent the road surface from being flooded by allowing a part of the rainwater to penetrate into the roadbed during heavy rain. In addition, by installing the permeable sheet 41 in the permeable region, it is possible to effectively prevent the roadbed soil from entering the permeable roadbed layer 21 and suppress the deterioration of the permeable function and water storage capacity over time.

[0047] (Modified Example 2) Next, FIG. 3 shows a modified example of the above-described embodiment. That is, as shown in FIG. 3(a), a water conducting member 50 that can conduct the moisture stored in the permeable roadbed layer 21 to the pumping layer 31 is provided at the connection part, one side of the water conducting member 50 is connected to the pumping layer 31, and the other side is connected to the impermeable region (the installation region of the illustrated water barrier sheet 42) of the permeable roadbed layer 21.

[0048] With such a configuration, for example, even when a curb, a planting zone, etc. are constructed on the ground part between the wet pavement area and the permeable pavement area, as shown in FIGS. 3(b) and (c), it becomes possible to surely conduct the moisture stored in the permeable roadbed layer 21 to the pumping layer 31 through the installed water conducting member 50.

[0049] In this embodiment, a rigid vinyl tube with an inner diameter of 40 mm is used as the water guiding member 50, but it is not necessarily limited to such specifications. For example, it can be appropriately changed according to the number of installation locations of the water guiding member 50, the area of the wet paving area, the area of the permeable paving area, etc., so as to ensure the water guiding amount necessary for the normal functioning of the wet paving.

[0050] (Modification Example 3) Next, FIG. 4 shows a modification example of the above-described embodiment. That is, as shown in FIG. 4(a), in the connection portion, it is possible to conduct water from the moisture stored in the permeable roadbed layer 21 to the pumping layer 31, and one end is connected to the pumping layer 31 and the other end is connected to the impermeable region of the permeable roadbed layer 21 (the installation region of the illustrated water shielding sheet 42), and a bottom water guiding member 51 is provided. Also, an upper water guiding member 52 is provided above the bottom water guiding member 51, and one end is connected to the pumping layer 31 and the other end is connected to the impermeable region of the permeable roadbed layer 21 (the installation region of the illustrated water shielding sheet 42).

[0051] With such a configuration, for example, even when a curb, a planting zone, etc. are constructed on the ground between the wet paving area and the permeable paving area, as shown in FIGS. 4(b) and (c), it is possible to surely conduct the moisture stored in the permeable roadbed layer 21 to the pumping layer 31 through the installed bottom water guiding member 51 and upper water guiding member 52.

[0052] In addition to the bottom water guiding member 51, by further providing the upper water guiding member 52 above it, as can be seen from the state during rainfall shown in FIG. 4(b), when a large amount of rainwater is stored in the permeable roadbed layer 21, rainwater will also be introduced from the upper water guiding member 52 to the pumping layer 31, and it becomes possible to quickly supply rainwater to the pumping layer 31.

[0053] In particular, when the rainfall increases due to heavy rain or the like and the water permeability to the roadbed cannot keep up, the upper water conduction member 52 enables the pumping layer 31, and further enables the rainwater to be drained to the rainwater drainage pipe 6 through the pumping layer 31, so that the water permeability function of the permeable paving area can be maintained well.

[0054] In this embodiment, as shown in Fig. 4(a), the water conduction cross-sectional area of the upper water conduction member 52 is made larger than the water conduction cross-sectional area of the bottom water conduction member 51. With such a configuration, when a large amount of rainwater is stored in the permeable roadbed layer 21 in the case of heavy rain or the like, it is possible to quickly reduce the storage amount of the permeable roadbed layer 21, and the water permeability function of the permeable paving area can be maintained well.

[0055] (Modification Example 4) Next, Figs. 4, 5, and 6 illustrate modification examples of the above-described embodiment. That is, as shown in Figs. 4(a) and 5(a), an inclination is formed on the bottom surface of the permeable roadbed layer 21, or as shown in Fig. 6(a), a step is formed on the bottom surface of the permeable roadbed layer 21, so that the height of the bottom surface of the permeable roadbed layer 21 in the impermeable region (the installation region of the illustrated water shielding sheet 42) is made lower than the height of the bottom surface of the permeable roadbed layer 21 in the permeable region (the installation region of the illustrated permeable sheet 41).

[0056] With such a configuration, as shown in Figs. 4 to 6(c), rainwater can be collected in the impermeable region (the installation region of the illustrated water shielding sheet 42), and a predetermined amount of rainwater can be stored without infiltrating into the roadbed. Thereby, even when there is no rainfall for a while, a predetermined amount of rainwater can be reliably stored and moisture can be continuously supplied to the wet surface layer 3.

[0057] (Modification Example 5) Next, Fig. 7 illustrates a modification example of the above-described embodiment. That is, as shown in Fig. 7(a), an inlet closing means 8 capable of closing the inlet of the upper water conduction member 52 is provided, and the inlet of the upper water conduction member 52 is configured to be openable and closable according to the storage amount of moisture in the permeable roadbed layer 21.

[0058] More specifically, as shown in Fig. 7(a), a water-permeable screen 81 is provided to form a predetermined space around the inlet of the upper water-conducting member 52, and an inlet closing means 8 having buoyancy is installed in the predetermined space.

[0059] Then, when the amount of water stored in the permeable roadbed layer 21 exceeds a predetermined amount due to rainfall or the like, as shown in Fig. 7(b), the inlet closing means 8 moves upward, the inlet of the upper water-conducting member 52 is opened, and the stored rainwater is conducted to the pumping layer 31.

[0060] On the other hand, as shown in Fig. 7(c), when the amount of water stored in the permeable roadbed layer 21 becomes less than or equal to the predetermined amount, the inlet closing means 8 moves downward, and the inlet of the upper water-conducting member 52 is configured to be closed.

[0061] With such a configuration, it is possible to prevent the rainwater stored in the permeable roadbed layer 21 from being excessively conducted to the pumping layer 31, and it is possible to continuously supply a necessary amount of water to the wet surface layer 3 by the bottom water-conducting member 51.

[0062] (Modification Example 6) Next, Fig. 8 shows a modification of the above-described embodiment, and Fig. 8(b) is a plan view of Fig. 8(a). That is, as shown in Fig. 8(b), a plurality of bottom water-conducting members 51 are provided at predetermined intervals, and a water treatment material capable of removing nutrient salts is provided inside the bottom water-conducting member 51. As the water treatment material, granulated products of Kanto loam, oyster shells, magnesium, aluminum, limestone, activated carbon, wood carbide, zeolite, etc. can be used alone or in combination. With such a configuration, it is possible to purify the rainwater that penetrates and is stored in the permeable paving area and supply it to the wet paving area.

[0063] (Modification Example 7) Next, FIG. 9 shows a modified example of the above-described embodiment. That is, it is possible to provide a water-permeable sheet 32 below the wet surface layer 3 and a water supply pipe 33 capable of supplying moisture to the water-permeable sheet 32. By configuring in this way, for example, even when sunny days continue and the rainwater stored in the permeable roadbed layer 21 runs out, by supplying tap water or the like to the water supply pipe 33 to supply moisture to the water-permeable sheet 32, it becomes possible to continuously function the wet paving area.

[0064] In addition, an observation well (not shown) may be provided in the permeable roadbed layer 21, and the water supply control to the water supply pipe 33 may be manually or automatically performed according to the amount of rainwater stored. With such a configuration, it becomes possible to efficiently use the stored rainwater to suppress the cost of water supply while continuously maintaining the function of the wet paving area.

[0065] Further, FIG. 9 shows an embodiment in which the permeable paving area is a roadway and the wet paving area is a sidewalk or the like. With such a configuration, it becomes possible to cool the road surface temperature of the sidewalk or the like on sunny days, and an effect can be obtained as a countermeasure against heat for pedestrians, pets, wheelchair users, etc. Note that the wet paving area is not limited to the above sidewalk and can be applied to parks, building exteriors, parking lots, etc.

[0066] As described above, the embodiment shown in FIG. 1 and each modified example shown in FIGS. 2 to 9 have been described. These can also be implemented in combination with each other.

[0067] (Other Embodiments) The paving structure of the present invention is not necessarily limited to the above-described embodiments and each modified example, and the following changes are possible.

[0068] For example, it is also possible to provide a manhole or a U-shaped gutter accessible from the ground at the connection part, and to provide the above-described water guiding member 50, bottom water guiding member 51, and upper water guiding member 52 therein. By adopting such a configuration, it becomes possible to easily replace and maintain each water guiding member.

[0069] In addition, the water guiding members 50, bottom water guiding member 51, and upper water guiding member 52 described above can be appropriately selected, and a PVC pipe, a flexible hose, a water guiding pipe in which a fiber material is woven, a water guiding mat composed of a non-woven fabric and a binding cord, etc. can be used. That is, each water guiding member is not limited to one that transports water according to gravity, and one that guides water using capillary action can also be used.

[0070] As described above, the embodiments and various modifications of the present invention have been explained. However, the scope of the present invention is shown by the claims, not by the description of the above embodiments, etc., and further includes all changes within the meaning and scope equivalent to the claims. Also, the specific materials, dimensional shapes, etc. described in the above embodiments can be changed within the scope of solving the problems of the present invention.

Explanation of Reference Numerals

[0071] 1 Pavement Structure 2 Permeable Surface Layer 3 Moist Surface Layer 6 Rainwater Drainage Pipe 8 Inlet Blocking Means 21 Water Penetrating Roadbed 31 Lifting Layer 32 Water Guiding Sheet 33 Water Supply Pipe 42 Water Blocking Sheet 50 Water Guiding Member 51 Bottom Water Guiding Member 52 Upper Water Guiding Member 60 Sheet 81 Screen

Claims

1. A paving structure having at least a wet paving area and a permeable paving area, wherein the wet paving area has at least a wet surface layer forming a road surface, and a pumping layer provided below the wet surface layer and capable of supplying moisture to the wet surface layer by capillary action, and the permeable paving area has at least a permeable surface layer forming a road surface, and a permeable roadbed layer provided below the permeable surface layer and capable of storing the moisture that has penetrated the permeable surface layer, the permeable roadbed layer supporting the permeable surface layer and the pumping layer supporting the wet surface layer are partitioned by a connection part and connected via the connection part, and the moisture stored in the permeable roadbed layer can be conducted to the pumping layer via the connection part A paving structure characterized by this.

2. In the permeable roadbed layer, a permeable area that enables the moisture stored in the permeable roadbed layer to penetrate into the roadbed, and an impermeable area that prevents the moisture stored in the permeable roadbed layer from penetrating into the roadbed are formed. The paving structure according to Claim 1.

3. The height of the bottom surface of the permeable roadbed layer in the impermeable area is lower than the height of the bottom surface of the permeable roadbed layer in the permeable area. The paving structure according to Claim 2.

4. The connection part includes a water-conducting member capable of conducting the moisture stored in the permeable roadbed layer to the pumping layer, and one side of the water-conducting member is connected to the pumping layer, and the other side of the water-conducting member is connected to the impermeable area of the permeable roadbed layer. The paving structure according to Claim 2 or 3.

5. The connection part includes a water conduction member capable of conducting the moisture stored in the water permeable roadbed layer to the pumping layer. The water conduction member includes a bottom water conduction member with one side connected to the pumping layer and the other side connected to the impermeable region of the water permeable roadbed layer, and an upper water conduction member provided above the bottom water conduction member, with one side connected to the pumping layer and the other side connected to the impermeable region of the water permeable roadbed layer. The paving structure according to claim 2 or 3.

6. The water conduction cross-sectional area of the upper water conduction member is larger than that of the bottom water conduction member. The paving structure according to claim 5.

7. The upper water conduction member has an inlet closing means capable of closing the inlet, and the inlet closing means can open and close the inlet of the upper water conduction member according to the amount of moisture stored in the water permeable roadbed layer. The paving structure according to claim 5 or 6.

8. The water conduction member is provided with a water treatment material capable of removing nutrient salts. The paving structure according to any one of claims 4 to 7.

9. The water conduction member is installed in a manhole or a side ditch where it is possible to enter and exit from the ground part in an exchangeable manner. The paving structure according to any one of claims 4 to 8.

10. Below the wet surface layer, a water conduction sheet capable of supplying moisture to the wet surface layer and a water supply pipe capable of supplying moisture to the water conduction sheet are provided. The paving structure according to any one of claims 1 to 9.

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