JPH07331602A - Water permeable pavement and its constructing method - Google Patents

Abstract

PURPOSE:To promote construction efficiency by inserting a net having size enough to coat honeycomb structural bodies of a plurality of blocks between the honeycomb structural bodies and a permeable lining layer, and jointing monolithically the honeycomb structural bodies, net and permeable lining layer. CONSTITUTION:A subbase course 50 is rolled on a subgrade 40 and is formed in the shape of a layer, the honeycomb structural bodies 10 are not required to contact their sides with each other, and they are successively laid on the subbase course 50 in a state to arrange the surfaces of the blocks on the same plane. After that, a net 20 is covered across the blocks of the honeycomb structural bodies 10, a permeable lining layer 30 is formed on the net 20, the lower layer of the lining layer 30 passes through openings of the net 20 to reach a membrane body 13 of the upper surfaces of the structural bodies 10 and is adhered to the net 20 and structural bodies 10, and three layers of the structural bodies 10, net 20 and lining layer 30 are monolithically formed by solidification of the lining layer 30. According to the constitution, a plurality of blocks of the structural bodies 10 can be easily connected by providing the net 20 between the structural bodies 10 and lining layer 30, and construction efficiency can be promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-permeable pavement applicable to promenades, bicycle paths, temporary roads, etc., and a construction method thereof.

[0002]

2. Description of the Related Art As a water-permeable pavement of this type, it has been known that the surface layer is composed of a water-permeable lining layer of an asphalt-based mixture, a cement-based mixture, or a resin-based mixture. With this permeable pavement, if a small amount of rainwater can penetrate into the subgrade or subgrade below the permeable lining layer, if there is a large amount of rainwater, there is the drawback that water easily overflows onto the surface. . In order to solve this drawback, it has been proposed to interpose a honeycomb structure for retaining water between the roadbed and the water-permeable covering layer.
This honeycomb structure is composed of resin block bodies having through-hole groups with a polygonal cross section in the vertical direction, and after connecting the blocks of the honeycomb structure sequentially laid on the roadbed with a connecting jig or bolts. The permeable coating layer is formed on the upper surface of the honeycomb structure group to construct the structure.

[0003]

Problems to be Solved by the Invention The above-mentioned water-permeable pavement technology has the following problems. <A> When connecting the adjacent portions of the honeycomb structure, it takes a lot of work to align the adjacent surfaces of the honeycomb structures and to set the connecting tools due to the influence of the unevenness of the roadbed, etc. Since the body is made of resin, it may be damaged when connecting. Further, a method has also been proposed in which a rigid reinforcing frame is attached to the outer periphery of the honeycomb structure and adjacent portions of the reinforcing frame are connected, but it takes time and effort to manufacture and attach the reinforcing frame, resulting in high construction cost. <B> Since the honeycomb structure is lightweight, the stability during construction is poor. Attempts have been made to secure the stability of the honeycomb structure by filling the inside with sand or the like, but if the stability is prioritized, the water retention property will be deteriorated. <C> As a maintenance of the water-permeable pavement, pressure water is used to appropriately remove the clogging substances, but the cleaning equipment is large and maintenance costs are high.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide the following water-permeable pavement and its construction method. A water-permeable pavement and a construction method thereof, which can easily and surely connect honeycomb structures and can improve strength without thickening the pavement. A water-permeable pavement with excellent workability and its construction method. A water-permeable pavement and a construction method thereof that can reduce construction costs and maintenance costs.

[0005]

According to the present invention, a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a surface to be paved, and a water-permeable lining layer is provided on the upper surface of the honeycomb structure. In a water-permeable pavement formed by forming a, a net having a size that covers a plurality of blocks of the honeycomb structure is interposed between the honeycomb structure and the water-permeable lining layer, and the honeycomb structure, the net, and the water-permeable lining layer are formed. A water-permeable pavement characterized by being joined together. Further, the present invention relates to a water-permeable pavement constructed by laying out a plurality of blocks of honeycomb structure having a large number of vertically open spaces on a surface to be paved, and forming a water-permeable lining layer on the upper surface of the honeycomb structure. , The honeycomb structure and the water permeable lining layer are joined together by inserting a net having a size that covers the honeycomb structure of a plurality of blocks, and the free end of the anchor anchored on the paved surface is connected to the honeycomb structure. It is a water-permeable pavement that is characterized by Further, the present invention relates to a water-permeable pavement constructed by laying out a plurality of blocks of honeycomb structure having a large number of vertically open spaces on a surface to be paved, and forming a water-permeable lining layer on the upper surface of the honeycomb structure. , Each leg of the connecting fitting arranged across the blocks of a plurality of adjacent honeycomb structures is inserted into each honeycomb structure to be connected, and in the space of the honeycomb structure into which the legs are inserted. The water-permeable pavement is characterized in that it is filled with a solidifying material and fixed between the metal fitting and each honeycomb structure.
Furthermore, the present invention is a water-permeable pavement, characterized in that at least the entire upper portion of the honeycomb structure is covered with a water-permeable and water-permeable film.

Further, the present invention relates to a water-permeable pavement in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a surface to be paved and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. In the construction method, on the upper surface of the honeycomb structure, laying a net of a dimension across a plurality of blocks, characterized by placing a water-permeable lining layer having adhesiveness on the upper surface of the net, of the water-permeable pavement It is a construction method.
Furthermore, the present invention is a method for constructing a water-permeable pavement, in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a paved surface and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. , The anchor is fixed on the surface to be paved, a net having a size spanning multiple blocks is laid on the upper surface of the honeycomb structure, and the free end of the anchor is integrally connected to the honeycomb structure. It is a construction method of pavement. Furthermore, the present invention relates to a method for constructing a water-permeable pavement in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a paved surface, and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. , A connecting metal fitting having a plurality of legs is hung between blocks of a plurality of adjacent honeycomb structures, and a solidifying material is filled in a part of the space of each honeycomb structure in which each leg is inserted to connect the connecting metal fittings and A method for constructing a water-permeable pavement, characterized in that it is fixed to the honeycomb structure.

[0007]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. First, the main members used in this construction will be described.

<A> Honeycomb structure FIGS. 1 and 2 show an example of a honeycomb structure 10. The honeycomb structure 10 is a plastic block body having a plurality of partition walls 11 surrounding the periphery thereof and a group of spaces 12 that are open in the vertical direction. The term "honeycomb" in the present invention does not mean only hexagons, but includes polygons other than hexagons, circles, ellipses, and the like. The cross-sectional shape of the space 12 is not limited by the shape, and may be a cavity that serves as a large number of water retaining regions. A film body 13 such as a non-woven fabric is attached to the upper and lower surfaces of the honeycomb structure 10 by adhesion or welding means. The film body 13 is a sheet-like material having water permeability and air permeability, but having a filter function of preventing passage of foreign matter such as sand and a reinforcing function of increasing the strength of the honeycomb structure 10. The film body 13 may be provided only on the upper surface of the honeycomb structure 10 when the reinforcement of the honeycomb structure 10 is not particularly required. The film body 13 is attached to each block of the honeycomb structure 10 in advance in a factory or the like, or after the blocks of the plurality of honeycomb structures 10 are laid on the site as described later, the film structures 13 are spread over the plurality of honeycomb structures 10. It will be attached later so that it will rise.

An example of suitable dimensions of the honeycomb structure 10 is illustrated.・ Material: polypropylene ・ Block size of honeycomb structure: 1000 mm (length) x approx.
2000 mm (width) × about 50Mm～500mm (height) space 12 of the cross-sectional shape: the inner dimension of the hexagonal-space 12: 20 mm, compressive strength: about 4 kgf / cm ² · Weight: about 40 kgf / m ³

<B> Net The net 20 is a member that has both the function of connecting the blocks of each honeycomb structure 10 and the function of a reinforcing member for the water permeable covering layer 30. For example, expanded metal, perforated plate,
Welded wire nets, general wire nets, lath nets, rope nets, etc. can be used. The material of the net 20 is appropriately selected according to the purpose of use. For example, when the water-permeable lining layer 30 is to be strengthened or when it is desired to reduce the strength of the water-permeable lining layer 30 and to make it thin, the net 20 is made of a rigid material. Use a high-quality material (expanded metal, perforated plate, welded wire mesh, etc.), and if the reinforcement of the water-permeable lining layer 30 is not required, use a material with low rigidity (general wire mesh, lath mesh, rope wire mesh) for the rope 20. The honeycomb structure 10 is selectively used by expecting only the connecting function between the blocks of the honeycomb structure 10.

<C> Water-permeable lining layer The water-permeable lining layer 30 is a pavement having water permeability and air permeability, is a kneaded product of natural stone and acrylic resin, and has adhesiveness in an uncured state. The kneaded material of the water permeable lining layer 30 is not limited to the above-mentioned natural stone and resin in combination, and a known material combination such as water permeable asphalt concrete can be adopted.

[0012]

[Operation] Next, the construction method of the water-permeable pavement will be explained.

<A> Roadbed Process First, a roadbed 50, which is a paved surface having excellent water permeability, is compacted on the roadbed 40 to form a layer. The roadbed 50 is composed of a sand layer 51 having high water permeability and a crushed stone layer 52 having many gaps formed on the sand layer 51. In this construction, it is not necessary to carry out high-precision inland refinement of the roadbed 50 surface,
There may be some irregularities.

<B> Laying of Honeycomb Structure Next, the blocks of the honeycomb structure 10 described above are sequentially laid on the roadbed 50. The honeycomb structure 10 may be directly laid on the roadbed 40. Up to now, the blocks of the honeycomb structure whose side surfaces are in contact with each other have been connected by various jigs, but in the present embodiment, it is not necessary to contact the side surfaces of each honeycomb structure 10 with each other. Honeycomb structure 1
It suffices if the upper surfaces of the blocks of 0 are substantially flush with each other.

<C> Set of Net After a plurality of blocks of the honeycomb structure 10 are laid, the net 20 is put over each block.

<D> Laying a water-permeable lining layer Next, a kneaded material of natural stone and molten resin is applied onto the net 20 with a trowel or the like to form a water-permeable lining layer 30. Water-permeable lining layer 3
The lower layer of 0 passes through the opening of the net 20 to reach the film body 13 on the upper surface of the honeycomb structure 10, and adheres to the net 20 and the honeycomb structure 10. By hardening the water permeable cover layer 30, the three layers of the honeycomb structure 10, the net 20, and the water permeable cover layer 30 are integrated. The net 20 connects the blocks of the honeycomb structure 10 to each other and also serves as a reinforcing member to improve the strength of the water permeable cover layer 30.

<E> Cleaning Work FIG. 3 is a sectional view of the water-permeable pavement manufactured through the above-mentioned steps. In this figure, rainwater that has permeated the water-permeable lining layer 30 permeates the net 20 and the upper membrane 13, is stored in the space 12 of the honeycomb structure 10, and gradually permeates into the ground. Rainwater containing foreign matter such as sand is filtered by the upper membrane body 13, and only the foreign matter remains on the upper membrane body 13. If the foreign matter clogged in the water permeable cover layer 30 or the foreign matter accumulated in the upper membrane body 13 is left untreated, the water permeability of the water permeable pavement is significantly reduced. Suction with negative pressure to clean. Inside the honeycomb structure 10 is a space 1
2, the suction force is generated when a negative pressure is applied from the surface side of the water-permeable lining layer 30, and the water-permeable lining layer 30 is generated.
It is possible to easily remove the foreign matter that is clogged with the foreign matter and the foreign matter that has accumulated in the upper film body 13.

[0018]

Second Embodiment FIG. 4 shows another embodiment in which a plurality of anchors 60 are used for construction. The anchor 60 is composed of a substrate 61 and a rope member 62 whose one end is connected to the substrate 61,
The substrate 61 placed on the roadbed 40 is embedded in the roadbed 50, and the free ends of the rope members 62 projecting from the upper surface of the roadbed 50 are lightly stretched to insert the upper and lower film bodies 13 of the honeycomb structure 10 into the net. Fix at 20. Net 20 rope material 62
As a means for connecting to, the rope material 62 may be wound, welded, clipped, or the like. In this embodiment, since the lightweight honeycomb structure 10 can be pressed via the anchor 60, there is an advantage that the stability of the honeycomb structure 10 is improved not only during the construction but also after the construction.

[0019]

[Embodiment 3] FIGS. 5 and 6 show an embodiment in which a plurality of adjacent honeycomb structures 10 of a plurality of blocks are connected using a connecting fitting 70. As shown in FIG. 6, the connection fitting 70 is composed of a rectangular connection frame 71 and a plurality of legs 72 that are integrally provided at the corners of the connection frame 71 so as to vertically extend in the same direction. FIG. 5 is a plan view in the case of connecting the four blocks of the honeycomb structures 10a to 10d, in which each leg 71 of the connecting fitting 70 is inserted into the corner portion of each of the honeycomb structures 10a to 10d to solidify the mortar or resin. The state where 80 is filled is shown. The position of each honeycomb structure 10 that penetrates the leg 72 is preferably in the space 12 which is separated from the outside of the honeycomb structure 10 by one or two in consideration of the connection strength. In addition, the connecting fitting 70 is inserted only from one of the upper and lower sides of the adjacent honeycomb structures 10, or is inserted from both upper and lower directions. Honeycomb structure 1
With respect to the film body 13 attached to 0, only the planned insertion position of the leg 72 is removed. Further, the number of honeycomb structures 10 that can be connected using the connection fittings 70 is not limited to four blocks, and two or more blocks can be connected. In the present embodiment, the solidifying material 80 can be brought into contact with the space 12 (a cylinder surrounded by the side wall 11) in a part of the honeycomb structure 10 so that the solidified material 80 can be connected to at least a large connecting strength. Moreover, there is an advantage that even if the contact surfaces of the respective honeycomb structures 10 are not uniform, they can be easily connected. Although the space 12 filled with the solidifying material 80 loses the water retaining function, since the number of the filling portions of the solidifying material 80 is small, there is no concern that the water retaining performance of the water-permeable pavement will be greatly affected as a whole. Absent.

[0020]

[Fourth Embodiment] The above-described first to third embodiments may be combined appropriately for construction.

[0021]

The present invention has the following unique effects. <B> By interposing the net between the honeycomb structure and the water permeable cover layer, a plurality of blocks of the honeycomb structure can be easily connected and the water permeable cover layer can be reinforced. In particular, since the thin wall can be designed while maintaining the strength of the water-permeable lining layer, the amount of the water-permeable lining material used can be reduced, which is economical. <B> Since the honeycomb structures can be connected without the side surfaces being in contact with each other, the laying work of the honeycomb structures and the connection thereof can be done easily, and the workability is improved. <C> Since the inside of the honeycomb structure is hollow, it is possible to suck negative pressure of the clogging material that has entered the water-permeable pavement, and maintenance of the water-permeable pavement is easy. In addition, a small commercial product can be used as the equipment for negative pressure suction, and a special large-scale dedicated equipment is not required, and maintenance costs can be reduced. <D> The use of the anchor improves the stability of the honeycomb structure during and after construction. <E> It is possible to firmly connect the plurality of blocks of the honeycomb structure by using the connection fittings, and further, it is possible to avoid the stress concentration at the connection portion and avoid the damage of the honeycomb structure. <To> The heat island phenomenon can be eliminated and the sound absorption effect is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a water-permeable pavement according to a first embodiment.

FIG. 2 is an enlarged view in which a part of the honeycomb structure is broken.

[Figure 3] Cross-sectional view of the completed water-permeable pavement

FIG. 4 is a sectional view of a water-permeable pavement according to a second embodiment using anchors.

FIG. 5 is a plan view of a honeycomb structure according to Example 3 using a connecting fitting.

FIG. 6 is a perspective view of the connection fitting.

Claims (7)

[Claims] 1. A water-permeable pavement constructed by laying a plurality of blocks of honeycomb structure having a large number of vertically open spaces on a paved surface and forming a water-permeable lining layer on the upper surface of the honeycomb structure. In the above, a net having a size that covers a plurality of blocks of the honeycomb structure is inserted between the honeycomb structure and the water permeable covering layer, and the honeycomb structure, the net and the water permeable covering layer are integrally bonded. , Permeable pavement. 2. A water-permeable pavement constructed by laying a plurality of blocks of a honeycomb structure having a large number of vertically open spaces on a surface to be paved and forming a water-permeable lining layer on the upper surface of the honeycomb structure. In, the honeycomb structure and the water-permeable lining layer were joined together by inserting a net of a size that covers the honeycomb structure of multiple blocks, and the free end of the anchor anchored on the paved surface was formed into the honeycomb structure. Water-permeable pavement characterized by being connected. 3. A water-permeable pavement constructed by laying a plurality of blocks of a honeycomb structure having a large number of vertically open spaces on a surface to be paved and forming a water-permeable lining layer on the upper surface of the honeycomb structure. In, while each leg of the connecting fitting arranged across the blocks of a plurality of adjacent honeycomb structures is inserted into each honeycomb structure to be connected, in the space of the honeycomb structure into which the legs are inserted. A water-permeable pavement characterized by being filled with a solidifying material to fix the space between the fitting and each honeycomb structure. 4. The water-permeable pavement according to claim 1, wherein at least the entire upper portion of the honeycomb structure is covered with a film having water permeability and water permeability. 5. A method for constructing a water-permeable pavement in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a surface to be paved and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. In the above, the method for constructing a water-permeable pavement is characterized in that a net having a size spanning a plurality of blocks is laid on the upper surface of the honeycomb structure, and a water-permeable lining layer having adhesiveness is formed on the upper surface of the net. . 6. A method for constructing a water-permeable pavement in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a surface to be paved and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. In the above, the anchor is fixed on the paved surface, a net having a size spanning a plurality of blocks is laid on the upper surface of the honeycomb structure, and the free end of the anchor is integrally connected to the honeycomb structure, Construction method of water-permeable pavement. 7. A method of constructing a water-permeable pavement in which a plurality of blocks of honeycomb structure having a large number of vertically open spaces are laid on a paved surface and a water-permeable lining layer is formed on the upper surface of the honeycomb structure. In, the connection fitting having a plurality of legs is hung between the blocks of a plurality of adjacent honeycomb structures, the solidification material is filled in a part of the space of each honeycomb structure through which the legs are inserted to form a connection fitting. A method for constructing a water-permeable pavement, characterized in that the honeycomb structure is fixed to each other.