JP2013185302A - Rainwater storage and permeation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rainwater storage and permeation structure which is excellent in all of water permeability, lightweight properties, and durability in comparison with conventional ones.SOLUTION: A rainwater storage and permeation structure 21 uses an L-shaped structural member as an inner side plate member 1, which comprises an L-shaped frame body 2 integrally molded with plastic and formed by joining one sides of two frame-shaped outer frames 2a, inner frames 3 each forming a rectangular opening part 3a in the center of each of the frame-shaped outer frames 2a of the frame body 2, and ribs 4 arranged between the outer frames 2a and the inner frames 3, respectively. The area of the respective rectangular opening parts 3a may be not less than 10% and not more than 50% of the area enclosed by the respective outer frames 2a. A panel-shaped structural member may also be used as the inner side plate member, which comprises a frame-shaped outer frame integrally molded with plastic, an inner frame forming a rectangular opening part in the center of the outer frame, and a rib arranged between the outer frame and the inner frame.

Description

  The present invention relates to a rainwater storage and penetration structure using a panel-like or L-shaped structural member integrally formed of plastic.

  The rainwater storage and penetration structure consists of a rainwater storage structure that is built in the ground as a storage space for collected rainwater, and the rainwater that is collected is temporarily stored in the ground and then slowly discharged into the ground. And a rainwater infiltration structure for dispersion and infiltration. This rainwater storage and penetration structure is designed to effectively use rainwater, prevent urban inundation disasters caused by sudden inflow of rainwater into rivers and underground rainwater pipe networks, and recharge groundwater to prevent land subsidence. Buried in the ground to deter.

  As an example of the structural member, a side plate member such as a rainwater storage and penetration structure described in Patent Document 1 or the like is formed by joining one side of each of two frame-shaped outer frames 42 and 43 as shown in FIG. Ribs 44, 45 formed in a letter shape and disposed on the outer frames 42, 43, and openings 46 formed appropriately in the ribs 44.

  As shown in FIG. 6, the side plate member 41 having the above configuration is combined in a cylindrical shape so as to face each other, and covers the upper and lower openings 47 and 48 formed by the two combined side plate members 41. The face plate members 52 and 53 are attached to the upper and lower sides of the side plate member 41 via the protrusions 52a and 53a, and the rainwater storage and penetration structure 51 is configured by covering the periphery with a sheet (not shown).

JP 2006-214103 A

  Since the rainwater storage and penetration structure 51 as described above is buried in the ground, it has a strength and durability that does not damage even when a large earth pressure is applied and a large vibration is applied as in an earthquake or the like. It is necessary to have. In addition, it is required to have sufficient storage properties to function as a rainwater storage and penetration structure, and to be lightweight from the viewpoint of transportation to the installation site and ensuring the durability and the like.

  Accordingly, an object of the present invention is to provide a rainwater storage and penetration structure that is lightweight, excellent in durability, and further improved in water permeability.

  In order to achieve the above object, the present invention is a rainwater storage and penetration structure, which is integrally formed of plastic, and has a frame-like outer frame, and an inner frame that forms a rectangular opening at the center of the outer frame, A panel-like structural member composed of a rib disposed between the outer frame and the inner frame is used as an internal side plate member.

  And according to this invention, since the rectangular-shaped opening part was formed in the center of the outer frame with the inner frame, water permeability improves and weight reduction can be achieved. Furthermore, in terms of durability, since it is superior to those having no rectangular opening at the center of the outer frame, it provides a rainwater storage and penetration structure that is superior to conventional ones in all of water permeability, light weight and durability. be able to.

  In the panel-shaped structural member constituting the rainwater storage and penetration structure, the area of the rectangular opening can be 10% or more and 50% or less of the area surrounded by the outer frame.

  Further, the present invention is a rainwater storage and penetration structure, which is integrally formed of plastic and is formed in an L shape in which one side of each of two frame-shaped outer frames is joined, and the frame body An L-shaped structural member comprising an inner frame that forms a rectangular opening at the center of each frame-shaped outer frame, and a rib disposed between each outer frame and each inner frame. It is used as an internal side plate member.

  According to the present invention, as described above, the structure is excellent in water permeability, light weight, and durability, and by forming the structural member in an L shape, the civil engineering is compared with the case where two panel-shaped structural members are used. The assembly work of the building structure is facilitated, and the installation cost of the rainwater storage and penetration structure can be further reduced.

  In the L-shaped structural member constituting the rainwater storage and penetration structure, the area of each rectangular opening may be 10% or more and 50% or less of the area surrounded by each outer frame.

  As described above, according to the present invention, it is possible to provide a rainwater storage and penetration structure that is superior to conventional ones in all of water permeability, lightness, and durability.

It is a figure which shows the side-plate member arrange | positioned inside the rainwater storage penetration structure which concerns on this invention, Comprising: (a) is a front view, (b) is a top view, (c) is a side view. It is sectional drawing which shows the side-plate member of FIG. 1, Comprising: (a) is the sectional view on the AA line of FIG. 1 (a), (b) is the sectional view on the BB line of FIG. (c) is the CC sectional view taken on the line of Fig.1 (a), (d) is the DD sectional view taken on the line of Fig.1 (a). It is a disassembled perspective view which shows the internal structure of the rainwater storage penetration structure using the side-plate member shown in FIG. It is a disassembled perspective view which shows the rainwater storage penetration structure using the internal structure etc. which are shown in FIG. It is the schematic which shows an example of the side plate member of the conventional rainwater storage penetration structure. It is a disassembled perspective view which shows the rainwater storage penetration structure using the side-plate member shown in FIG.

  Next, an embodiment of the rainwater storage and penetration structure according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a side plate member disposed inside a rainwater storage and penetration structure, and this side plate member 1 is a frame formed in an L shape in which one side of each of two frame-shaped outer frames 2a is joined. 2, an inner frame 3 that forms a rectangular opening 3 a in the center of each outer frame 2 a of the frame 2, and a rib 4 that is disposed between each outer frame 2 a and each inner frame 3, Is provided.

  Since the frame body 2 is formed in an L-shape in which one side of each of the two frame-shaped outer frames 2a is joined, the frame body 2 is composed of one frame-shaped outer frame and is formed in an independent panel shape. While being excellent in intensity | strength, the assembly operation of the rainwater storage penetration structure using this frame 2 becomes easy.

  The inner frame 3 forms a rectangular opening 3a in the center of each frame-shaped outer frame 2a of the frame 2, and the area of the rectangular opening 3a is 10% of the area surrounded by the outer frame 2a. It is set to 50% or less. The provision of the rectangular opening 3a is a feature of the present invention, and the rainwater storage and penetration structure using the frame body 2 having the rectangular opening 3a does not have the rectangular opening 3a. Not only is it lighter and more water-permeable than a rainwater storage and penetration structure using a frame, but it also has excellent durability as described below.

  The rib 4 is disposed between each outer frame 2a and each inner frame 3 in order to improve the strength of the side plate member 1, and has a rectangular opening as shown in FIGS. 2 (a) and 2 (b). It is formed continuously in the horizontal direction except for the portion 3a, and is formed in a plurality of steps in the vertical direction except for the rectangular opening 3a as shown in FIGS. 2 (c) and 2 (d). As clearly shown in FIG. 2B, the end of the rib 4 facing the rectangular opening 3 a also serves as the inner frame 3. An opening 5 is appropriately drilled in the rib 4 in consideration of water permeability.

  The side plate member 1 is integrally formed of a plastic material, and at this time, a recycled plastic material can also be used.

  As shown in FIG. 3, the side plate member 1 having the above configuration is combined in a cylindrical shape so as to face each other and covers the upper and lower openings 7 and 8 formed by the two side plate members 1. The members 12 and 13 are attached to the upper and lower sides of the side plate member 1 through the protrusions 12a and 13a to constitute the internal assembly 11 of the rainwater storage and penetration structure.

  Next, the rainwater storage and penetration structure 21 configured by using the internal assembly 11 and the face plate members 12 and 13 will be described with reference to FIG.

  A plurality of face plate members 13 shown in FIG. 3 are combined to constitute the top and bottom surfaces of the rainwater storage and penetration structure 21 as the upper and lower plates 22 and 26. Further, an intermediate plate 24 is configured by combining a plurality of face plate members 12 shown in FIG.

  A plurality of internal assemblies 11 shown in FIG. 3 are formed between the upper and lower plates 22 and the intermediate plate 24 and between the upper and lower plates 26 and the intermediate plate 24, and the main body is formed using the side plate 14 having no opening. 23, 25 are formed, the upper and lower plates 22 to 26 are combined, and the surroundings are covered with a sheet (not shown) to constitute the rainwater storage and penetration structure 21.

  According to this rainwater storage and penetration structure 21, since the rectangular opening 3 a is formed in the side plate member 1, a flow path through which rainwater or the like flows is formed inside the rainwater storage and penetration structure 21, and water permeability is significantly improved. At the same time, it is possible to reduce the weight by forming the rectangular opening 3a. Furthermore, in terms of durability, as will be described later, it is superior to the rainwater storage and penetration structure using the conventional side plate member 241 that does not have the rectangular opening shown in FIG. 5, and has water permeability, lightness, and durability. In all, it is possible to provide a rainwater storage and penetration structure that is superior to the conventional one.

  Next, a test example of a conventional rainwater storage and penetration structure using the side plate member 1 according to the present invention having the above-described configuration and the side plate member 41 shown in FIGS. 5 and 6 will be described.

  In the underground buried rainwater storage and penetration structure, the proof stress and deformation performance of the members constituting the structure are required with respect to repeated loads during an earthquake. In order to confirm these, through a positive / negative alternating loading test, a structure using the side plate member 1 shown in FIGS. 1 and 2 (Example) and a structure using the side plate member 41 shown in FIG. 5 (Comparative Example) ). The test results are shown in Table 1. As shown in the table, it can be seen that both the maximum shear stress and the maximum shear strain were significantly improved.

  The water permeability was compared from the opening areas of the side plate member 1 and the side plate member 41. As shown in Table 2, it can be seen that the water permeability is improved 16 times as compared with the conventional method.

  The lightness was compared from the masses of the side plate member 1 and the side plate member 41. As shown in Table 3, the side plate member 1 according to the present invention has a mass reduced by 17% compared to the conventional side plate member 41.

  In addition, in the said embodiment, although the side plate member 1 provided with the frame 2 formed in the L shape which joined each one side of two frame-shaped outer frames 2a was demonstrated, two frame-shaped outer frames The frame 2a is separated by a joint surface to form an independent frame, and is disposed between the outer frame and the inner frame, a frame-shaped outer frame, an inner frame that forms a rectangular opening at the center of the outer frame, and the inner frame. By providing these ribs and integrally forming them into a panel shape, it is possible to provide a structural member that is superior to conventional ones in all of water permeability, light weight, and durability.

DESCRIPTION OF SYMBOLS 1 Side plate member 2 Frame 2a Outer frame 3 Inner frame 3a Rectangular opening part 4 Rib 5 Opening part 7, 8 Opening 11 Internal assembly 12, 13 Face board member 12a, 13a Protrusion 21 Rain water storage penetration structure 22 Upper and lower board 23 Main body 24 Intermediate plate 25 Main body 26 Upper and lower plates

Claims (4)

  It is integrally formed of plastic, and includes a frame-shaped outer frame, an inner frame that forms a rectangular opening at the center of the outer frame, and a rib disposed between the outer frame and the inner frame. A rainwater storage and penetration structure characterized by using a panel-like structural member as an internal side plate member.   The rainwater storage and infiltration structure according to claim 1, wherein an area of the rectangular opening is 10% or more and 50% or less of an area surrounded by the outer frame.   An L-shaped frame that is integrally molded from plastic and joined on one side of each of the two frame-shaped outer frames, and a rectangular opening is formed at the center of each frame-shaped outer frame of the frame A rainwater storage / penetration characterized in that an L-shaped structural member composed of an inner frame and a rib disposed between each outer frame and each inner frame is used as an inner side plate member. Structure.   4. The rainwater storage and infiltration structure according to claim 3, wherein an area of each rectangular opening is 10% or more and 50% or less of an area surrounded by each outer frame.

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