JP2010285854A - Permeable covered-conduit structure, construction method thereof, and permeable paved road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve drainage performance of a permeable paved road by installing a permeable covered-conduit lid composed of grating and expanded metal in a stepped part of a side ditch body and by covering the top surface of the permeable covered-conduit lid with a permeable surface. <P>SOLUTION: The permeable covered-conduit structure comprises the side ditch body, the permeable covered-conduit lid, and the permeable surface layer. The top ends of the right- and left-side walls having stepped parts of the side ditch body have different heights, and the permeable covered-conduit lid is constituted by welding the expanded metal on the top surface of the grating. Rainwater can permeate the permeable surface layer. The structure adopts the means by which the permeable covered-conduit lid is installed in the stepped part of the side ditch body and the top surface of the permeable covered-conduit lid is covered with the permeable surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a permeable underdrain structure having a rainwater drainage function, a construction method thereof, and a permeable paved road.

  The function of the permeable underdrain structure equipped on conventional permeable paved roads is to make the permeable opening as large as possible in order to increase drainage efficiency and to narrow the road width due to the difference in landscape due to the side groove and road boundary. It is required to have a structure that can withstand visible weight, effectively use the upper surface of the permeable undercarriage structure, and withstand the load weight caused by traffic of people and vehicles (bicycles and automobiles).

  In order to achieve the above requirements, by connecting a plurality of chevron and square angle materials to the step opening of the gutter body to secure a gap that becomes a water passage, rainwater is covered from the road surface by covering the upper surface with a water surface layer. A technique for draining into the side groove is known (see Patent Document 1).

  However, the above technique is extremely poor in drainage efficiency because the cross-sectional area of the opening gap of the water passage is extremely narrow with respect to the surface area of the plurality of angled or square angle members to be connected. Since the ratio of the surface area of the angle material to the surface area is large, there is a problem that the weight is heavy and the material cost and the manufacturing cost are increased. Furthermore, the side groove main body is processed on-site, or the side groove itself is cast in place to finish the concrete, and its construction efficiency is extremely low.

  In addition, a box-shaped side groove lid technology that has edges at both ends so that a decorative material or a planter can be placed on the side groove main body, and has ensured water permeability using an expanded metal on the bottom surface is known ( Patent Document 2).

  However, the above technology was devised for the purpose of effectively using the upper part of the gutter body by making the road landscape look beautiful or using it as a flower bed. The top surface was not a technology that allowed people and vehicles (bicycles / cars) to pass through.

Japanese Patent Laid-Open No. 2005-23776 Registered Utility Model No. 3147591

  In view of the above problems, the present invention places a water-permeable undercover made of grating and expanded metal on the stepped portion of the side groove main body, and covers the entire top surface of the water-permeable undercover with a water-permeable surface layer. The first objective is to increase the drainage capacity of permeable paved roads.

  Further, the present invention generally includes an upper end portion where the side wall of the gutter body has a low height, an upper surface height position of the water-permeable underdrain lid placed on the stepped portion, and an upper surface height position of the ground layer covering the ground. The difference in landscape between the side groove and the road boundary is the same, and the upper surface height position of the permeable surface layer covering the permeable culvert lid is approximately the same as the height position of the upper end where the side wall height is high. The second purpose is to eliminate the visibility that the road width caused by the road looks narrow.

  Furthermore, the third object of the present invention is to provide a strength that can withstand the load weight caused by the passage of a person or a vehicle (bicycle / automobile) by using a water-permeable undercover covered with expanded metal on the upper surface of the grating. To do.

  Furthermore, the present invention relates to a water-permeable paved road constructed by the method of constructing the water-permeable underdrain structure of claim 1 according to claim 2, a road or a wide site covered with concrete or asphalt, etc. The fourth objective is to provide a non-permeable paved road that crosses the road.

  In order to achieve the first object, the present invention provides a lateral groove main body having different heights at the upper ends of left and right side walls having a step, a permeable underdrain lid in which an expanded metal is welded to the upper surface of the grating, and permeable to rainwater. In the permeable culvert structure composed of a permeable surface layer to be laid, a permeable culvert lid with an expanded metal welded on the upper surface of the grating is placed on the step portion of the gutter body, and the top surface of the permeable culvert lid is permeable to water. Take measures covered by the surface layer.

  In order to achieve the second object, the present invention covers the upper end portion where the side wall of the gutter body has a low height, the upper surface height position of the water-permeable underdrain lid placed on the step portion, and the ground. Means for making the upper surface height position of the base layer substantially the same, and the upper surface height position of the permeable surface layer covering the permeable culvert lid being substantially the same as the height position of the upper end where the side wall height is high. take.

  Moreover, in order to achieve the third object, the present invention provides a permeable paved road in which the permeable culvert structure of claim 1 is constructed by the construction method of the permeable culvert structure of claim 2. It is.

  Moreover, in order to achieve the fourth object, the present invention provides a water-permeable pavement and a water-permeable pavement constructed by a water-permeable surface layer and a water-permeable surface layer that is covered with the water-impermeable surface and its construction method. Is to provide.

  According to the first aspect of the present invention, the side groove main body having different heights at the upper ends of the left and right side walls having a step, the permeable underdrain lid with the expanded metal welded to the upper surface of the grating, and the water permeable for allowing rainwater to permeate. Because it is a water-permeable underdrain structure composed of an extremely simple structure with the surface layer, it is low in manufacturing cost and lightweight and robust. Especially, by adopting grating and expanded metal for the water-permeable underwater lid, For the side groove application width of 50 cm, the water-permeable underdrain structure of the present invention can correspond to the width of the water-permeable underdrain lid of 100 cm. Although the pitch varies somewhat depending on the pitch width of the expanded metal, the applicant's trial calculation shows that the groove width is 40 cm and the porosity is 34.5 to 46.3% compared to 3.63% of the conventional (Patent Document 1). As a result, it is possible to obtain an excellent effect that the water permeability associated therewith is improved 10 to 12 times.

  According to the second aspect of the present invention, since the surface of the road is entirely paved with a water-permeable surface layer having no backlash or steps, the roadway and the bicycle road are made barrier-free so that the roadway is effective. It can be used, and it is possible to prevent clogging due to garbage, gravel, etc. that are carried along with the drainage by having no boundary. Furthermore, it is possible to increase the wastewater treatment capacity in heavy rainfall by installing the underdrain structure of the present invention at regular intervals and covering the road with the water-permeable surface layer covering the road. In addition, it is easy to maintain and manage, and in terms of strength, it makes it easy for people and vehicles (bicycles and automobiles) to pass, and it is possible to obtain an excellent effect of facilitating the passage of persons with disabilities, the elderly, and wheelchairs.

  According to claim 3, by providing a water-permeable paved road that is fully paved with a water-permeable surface layer, the road landscape is improved, and maintenance of sidewalks and bicycle paths is made with improved visibility. The excellent effect that can realize the permeable paved road with many traffic safety measures such as the installation of signs and parking areas is obtained.

  According to the present invention described in claim 4, for example, it is used as a ditch coming out from a site to a road, or as a car wash place, a kitchen, a market, a factory, a work place, a storefront, a gas station, a zoo kitchen that is frequently washed with water. It can also be used for parks with flat roads, stadiums, pedestrian heavens, promenades, rooftops, shrines and temples that emphasize landscapes, and Japanese gardens.

It is explanatory drawing which showed the structure content of the water-permeable underdrain structure in this invention. (Example 1) It is explanatory drawing which showed the structure content of the water-permeable undercover lid in this invention. (Example 2) It is explanatory drawing which showed the new construction method of the water-permeable underdrain structure in this invention. (Example 3) It is explanatory drawing which showed the existing construction method of the water-permeable underdrain structure in this invention. Example 4 It is explanatory drawing which showed the water-permeable paved road in this invention. (Example 5) It is explanatory drawing which showed the water-permeable paved road in this invention. (Example 5) It is explanatory drawing which showed the other utilization method in this invention. (Example 6)

  The present invention improves the drainage capacity of a permeable paved road by using a permeable culvert structure that places a permeable culvert cover on the step portion of the gutter body and covers the upper surface of the permeable culvert cover with a permeable surface layer. The most important feature is the use of a water-permeable undercover with an expanded metal welded to the upper surface of the grating. Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is an explanatory view showing the configuration contents of a water-permeable underdrain structure 10 according to the present invention.
The water-permeable underdrain structure 10 is composed of a very simple structure of the side groove main body 11, the water-permeable underdrain lid 20, and the water-permeable surface layer 30, so that the manufacturing cost is low, and it is lightweight and robust. By using the grating 21 and the expanded metal 22 for the water-permeable underdrain lid 20, the water permeability is increased by 10 to 12 times.

  The side groove main body 11 is a general U-shaped side groove, and has an upper end portion 14a having a high side wall 12 height, an upper end portion 14b having a low side wall 12 height, and a stepped portion 13. Is done. Further, the side groove main body 11 can be processed on site or finished by hitting the side groove itself on site.

  The water-permeable undercover 20 is placed on the step portion 13 of the side groove main body 11, and an expanded metal 22 is welded to the upper surface of the grating 21 with the same area. The surface is hot-dip galvanized, and the shape dimensions are, for example, length 995 mm, width 400 mm, thickness 30 mm (grating 25 mm, expanded metal 5 mm), and the outline of the grating is 50 × 25 mm for the end plates on both sides. The square pipe is used, and is composed of a rib member having a horizontal beam pitch of 30 mm and four vertical beams.

  The water permeable surface layer 30 covers the surface of the expanded metal 22, and the layer thickness is such that the side wall 12 of the side groove main body 11 has a low upper end portion 14 b and the water permeable undercover lid 20 placed on the stepped portion 13. It is constructed between substantially the same height position of the upper surface and the height position of the upper end portion 14a where the side wall 12 of the side groove main body 11 is high, and plays the role of enhancing the drainage effect of rainwater.

FIG. 2 is an explanatory diagram showing the contents of the structure of the water-permeable undercover according to the present invention.
The figure (a) shows the whole perspective view of a water-permeable undercover lid. FIG. (B) shows the disassembled perspective view which comprises a water-permeable dark fence lid. Figure (c) shows an enlarged top view of the expanded metal. Figure (d) shows an enlarged side sectional view of the expanded metal.
As shown in FIGS. 2A and 2B, the water-permeable underdrain lid 20 has an expanded metal 22 on the upper surface of a rectangular grating 21 placed on the opening 15 and the stepped portion 13 of the side groove main body 11. It is welded in the same manner and maintains durability with the grating 21 and ensures water permeability with the expanded metal 22. Although it is possible to use punching metal from the viewpoint of water permeability, the expanded metal 22 has superior durability because the surface is uneven and obliquely deformed as shown in FIGS. Since the size of the mesh opening 23 viewed from the outside and the mesh opening 23 viewed obliquely is different, the permeability of the water-permeable surface layer 30 is increased and the arrow is indicated by an arrow while ensuring water permeability. It has a structure in which the flow of rainwater is improved and the effect of water permeability is remarkably obtained.

FIG. 3 is an explanatory view showing a new construction method of the water-permeable underdrain structure 10 in the present invention.
The construction sequence of the permeable paved road 40 using the permeable culvert structure 10 will be described below.
(A) The side end of the road D is dug with a heavy machine or the like, and the gutter body 11 is installed by laying chestnut stone, gravel, or the like.
(B) Construction is performed by matching the height position of the lower upper end portion 14b of the side wall 12 of the side groove body 11 with the thickness height position of the foundation layer K.
(C) The water-permeable culvert lid 20 is placed on the step portion 13 of the gutter body 11.
(D) The water-permeable undercover 20 is covered with the water-permeable surface layer 30 in accordance with the height position of the upper end portion 14a of the side wall 12 of the side groove body 11 which is higher. If necessary, the upper end portion 14a side of the side wall 12 of the gutter body 11 is paved with concrete or asphalt C.

FIG. 4 is an explanatory view showing a permeable paved road in the present invention.
The completed water-permeable paved road 40 is entirely covered with the water-permeable surface layer 30, so that the road landscape is beautiful, and the water-permeable paved road 40 is solid and has good water permeability. Used for parks, markets, workshops, workshops, storefronts, petrol stations, zoo kitchens, parks with flat roads, stadiums, pedestrians, promenades, rooftops, shrines and temples that emphasize landscapes, gardens, etc. It can be done.

FIG. 5 is an explanatory view showing an existing construction method of the water-permeable underdrain structure 10 according to the present invention.
The construction sequence of the permeable paved road 40 using the permeable culvert structure 10 will be described below.
(A) A U-shaped side groove J is provided at the side end of the road paved with concrete or asphalt C.
(B) The side gutter lid S closing the opening 15 of the U-shaped side gutter J is removed, and the concrete or asphalt C layer of the paved road is removed.
(C) A part of the side wall 12 on the road side of the side wall 12 of the side groove main body 11 is cut, and the thickness and height of the foundation layer K are adjusted according to the height of the upper end portion 14b.
(D) The water-permeable underdrain lid 20 is placed on the stepped portion 13 of the side groove main body 11, and the height position of the upper end portion 14a of the side wall 12 of the side groove main body 11 is adjusted to be the water-permeable surface layer. Cover with 30.
If necessary, the upper end portion 14a side of the side wall 12 of the gutter body 11 is paved with concrete or asphalt C.

  In addition, in FIG. 5, although it has shown about the aspect covered widely with the water-permeable surface layer 30 from the water-permeable dark fence lid 20 to the base layer K including the upper end part 14b of the cut side wall 12 in the side groove | channel main body 11, this embodiment For example, as shown in FIG. 6, an embodiment in which only the upper part of the permeable undercover 20 is covered with the permeable surface layer 30 and the other part is paved with concrete or asphalt C may be considered.

FIG. 7 is an explanatory view showing a non-permeable pavement in the present invention.
It is used for the side ditch that goes from the site to the non-permeable paved road 50, the road D covered with concrete, asphalt C, etc., and the permeable underdrain structure 10 of the non-permeable paved road 50 that crosses a wide site. Is something that can be done.

DESCRIPTION OF SYMBOLS 10 Water-permeable undergrowth structure 11 Side groove main body 12 Side wall 13 Step part 14 Upper end part 14a Higher upper end part 14b Lower upper end part 15 Opening part 20 Permeable undercover 21 Grating 22 Expand metal 23 Mesh opening part 30 Permeable surface layer 40 Permeable paved road 50 Non-permeable paved road G Ground K Ground layer D Road C Concrete or asphalt J U-shaped side gutter S Side gutter lid

Claims (4)

  Permeable culvert composed of a side groove body with different heights at the upper ends of the left and right side walls having a step, a permeable underdrain lid with an expanded metal welded to the upper surface of the grating, and a permeable surface layer through which rainwater flows. A water permeable culvert structure, wherein the permeable culvert lid is placed on a step portion of the gutter body, and the top surface of the permeable culvert cover is covered with the water permeable surface layer.   The upper end portion where the side wall of the gutter body has a low height, the upper surface height position of the water-permeable undercarriage lid placed on the stepped portion, and the upper surface height position of the foundation layer covering the ground are substantially the same, And the upper surface height position of the said water-permeable surface layer which covers the said water-permeable underdrain lid is constructed substantially the same as the height position of the upper end part where the height of the side wall is high, Construction method.   A water-permeable paved road, wherein the water-permeable underdrain structure of claim 1 is constructed by the construction method of the water-permeable underdrain structure of claim 2.   The water-permeable surface layer is a water-impermeable surface layer, the water-impermeable underlay structure for water-impermeable pavement, its construction method, and a water-impermeable pavement.

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