JP2009221685A - Construction method for side ditch equipped with permeable pavement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method for a side ditch, which enables a permeable pavement to be easily installed on the side ditch, while shortening a construction period by utilizing an existing side ditch approximately as-is, and which enables a water collecting function of the side ditch to be maintained and secured over a long period of time. <P>SOLUTION: A cover slab 3 is removed from a side ditch body 2 of the existing side ditch 1; a plurality of permeable cover slabs 7 are newly installed on the cover holder 6 of the side ditch body 2; a permeable sheet 8 is arranged from a pavement surface layer 32 adjacent to the existing side ditch 1 or a top surface of a base course 31 after the removal of the pavement surface layer 32 to the whole top surface of each of the permeable cover slabs 7; cushion sand 9 is laid throughout the top surface of the permeable sheet 8; and a plurality of permeable pavement blocks 10 are laid throughout the top surface of the laid cushion sand 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for constructing a gutter that can easily construct a gutter having a water-permeable pavement on-site while shortening the work period by using an existing gutter substantially as it is.

  2. Description of the Related Art Conventionally, there is a side groove having a substantially U-shaped cross section as a concrete side groove that is continuously installed on the shoulder of a roadway or sidewalk. The conventional type side groove is made of concrete installed in the side groove main body formed in a substantially U-shaped cross section from the bottom and side walls forming a water collecting channel extending in the longitudinal direction inside, and the lid of the upper surface opening of the same side groove main body. The structure is provided with a cover plate.

  According to such a gutter, rainwater that has fallen on the impervious pavement on the roadway or sidewalk flows to the gutter side along the transverse gradient, and flows down from the water collecting hole of the cover plate to the water collecting channel in the gutter body. Yes.

  The impermeable pavement has been heavily adopted in recent years because the surface of the pavement becomes submerged when the amount of rainfall increases and the amount of rainfall increases. A water-permeable pavement uses relatively large aggregates in the surface pavement and forms a water-permeable gap between the aggregates. Rainwater that falls on the pavement quickly penetrates into the ground from the surface. Rainwater that has not permeated completely passes through the surface layer and is drained into the gutter.

  As side grooves to be installed on the permeable pavement, formwork is used in advance as a two-layer structure in which a permeable concrete layer is combined on a non-permeable concrete layer with a water collecting hole penetrating vertically. The rainwater that passes through the water-permeable surface layer of the permeable pavement is introduced into the permeable concrete layer of the side-gutter lid through the water passage formed on the side wall of the side of the pavement. And the technique of collecting water from the inside of a gutter body through the water collection hole of a water-impermeable concrete layer from there is known (refer patent document 1).

Further, a technique is known in which a side groove lid in which a water collecting hole penetrating vertically is attached to the upper surface opening of the side groove body so that the upper surface of the side groove body is covered with a water permeable surface layer (see Patent Document 2). .
JP 2000-179034 A Japanese Patent Laid-Open No. 2005-23776

  However, since the side groove of the above-mentioned patent document 1 is manufactured in advance using a mold, the side groove cover is difficult to construct on the site, and in the case of construction on the site, the mold supported by the support material inside the side groove main body. It is necessary to cast concrete in the frame, and it is necessary to install the formwork and remove the formwork, and it is difficult to continue the formwork without interrupting drainage. There's a problem.

  Moreover, although the side groove of the said patent document 2 has the advantage that a side groove cover can be constructed on-site, a steel plate is used for the side groove cover, the exposed steel plate invites corrosion by rainwater, and a part of the corroded steel plate is a side groove main body. There is a problem of falling inside and hindering the water collecting function. Even if the steel sheet is subjected to rust-prevention coating or plating treatment, it has sufficient durability when used in environments with severe corrosion conditions, such as those exposed to corrosive gas, seawater, anti-freezing agents (such as calcium chloride), etc. It is difficult to secure.

  The present invention has been made in view of the above-mentioned problems, and it is possible to install the permeable pavement on the side groove while shortening the construction period by using the existing side groove substantially as it is. It aims at providing the construction method of a gutter which can maintain and secure a water collecting function.

In order to solve the above-mentioned problem, the construction method of the gutter according to claim 1 of the present invention is
Remove the lid from the gutter body of the existing gutter,
A plurality of water-permeable cover plates are newly installed on the lid of the same groove body,
From the upper surface of the pavement surface layer adjacent to the existing gutter or from the upper surface of the roadbed after the removal of the pavement surface layer, the entire upper surface of each permeable cover plate is arranged,
Lay cushion sand on the entire upper surface of the water-permeable sheet,
A plurality of permeable pavement blocks are laid on the entire upper surface of the laid cushion sand.

According to the method for constructing a gutter according to claim 1, a gutter having a water-permeable pavement can be easily constructed on-site at a short construction period and with a small construction cost by using the existing gutter body as it is. That is, after removing the existing cover plate and newly installing a water-permeable cover plate continuously on the lid of the gutter body, and removing each pavement surface layer or pavement surface layer on each water-permeable cover plate as an embedded cover plate From the roadbed to the entire upper surface of the permeable cover plate, a plurality of permeable pavement blocks are laid with no gaps through the permeable sheet and cushion sand, which allows the construction of side grooves with permeable pavements in a short construction period and with less construction. Can be easily constructed on site at low cost. Here, a water-permeable sheet having a basis weight of 60 g / m ² is used, and a cushion sand having a particle size of 4.75 mm or less is used.

In laying the water-permeable pavement block on each water-permeable cover plate, a water-permeable sheet having a basis weight of 60 g / m ² is placed on the water-permeable cover plate, and cushion sand having a particle size of 4.75 mm or less is placed thereon. Therefore, the water permeable sheet prevents the cushion sand from flowing out to the upper surface of each permeable cover plate, and the upper surface of each permeable cover plate is not clogged. Further, the cushion sand does not fall into the water collecting channel from the gap between the water-permeable cover plates. Thereby, the ditch | gutter after construction can maintain and secure the water collection performance over a long period of time.

  Newly permeable slabs include concrete slabs with reinforcing bars. The strength of the embedded cover can be increased by placing reinforcing bars inside, and the internal reinforcing bars are not likely to corrode for a long time due to the cover thickness of the concrete. The durability of the cover plate is further improved by applying rust prevention treatment such as plating.

  In addition, as long as the construction method of the present invention is a paved road provided with a gutter, applicable places are not limited to roadways, sidewalks, parking lots, parks, and the like.

  In the construction method of the side groove according to claim 2 of the present invention, the pavement surface layer adjacent to the existing side groove is removed from the roadbed, and the upper side of both side walls of the side groove body protruding from the upper surface of the roadbed is excised, and a lid hook is newly installed. A plurality of water-permeable cover plates are installed on a newly installed lid cover.

  In the method for constructing a side groove according to claim 3 of the present invention, the pavement surface layer adjacent to the existing side groove is removed from the roadbed, and the upper portions of both side walls of the side groove main body are adjusted to the thickness of the newly installed permeable cover plate. It cuts in a position below the upper surface, and the lid hook is newly provided on the cut surfaces of both side walls so that the upper surface is substantially at the same level as the upper surface of the roadbed.

  In the construction method of the side groove according to claim 4 of the present invention, when the upper surface of the water permeable plate installed on the lid of the side groove main body is lower than the upper surface of the side groove main body, Cushion sand is laid such that a predetermined thickness is maintained on the laying thickness with reference to the upper surface level of the side groove body.

  In the construction method of the side groove according to claim 5 of the present invention, when the upper surface of the water permeable plate installed on the lid of the side groove main body is higher than the upper surface of the side groove main body, Cushion sand is laid so that a predetermined thickness is maintained on the laying thickness on the basis of the upper surface level of the permeable cover plate.

  In the construction method of the side groove according to claim 6 of the present invention, the cut-out portion is formed on the cut-out portion for the cue formed on the mating surface of the adjacent water-permeable cover plate installed on the cover-hanging portion of the side groove main body from above. It is characterized by attaching a plug that closes.

  According to a seventh aspect of the present invention, there is provided a side groove construction method, wherein the plug body includes a head portion that closes the notch portion for a cue from above, a lower portion extending vertically from the head portion and elastically deforming in the notch portion. A pair of feet that can be inserted through the top, and a latch that extends outward from the tip of the feet and is locked to the lower surface of the permeable cover plate with the pair of feet inserted vertically through the notch It is comprised from a part.

  As described above, according to the method for constructing a gutter according to the present invention, a water-permeable pavement that continues from a roadway, a sidewalk, etc. to a gutter while substantially reducing the construction period and construction cost by using the existing gutter substantially as it is. A gutter provided with a water-permeable pavement composed of blocks can be easily and efficiently constructed on site. Moreover, the side groove | channel after construction has the outstanding effect that the outflow of the cushion sand under a water-permeable block can be prevented, and the water collecting function of a side groove | channel can be maintained and maintained over a long period of time.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show a first embodiment of the present invention. The side groove 1 shown in FIG. 1 is continuously installed near the roadway 40 of the sidewalk 30, and is constructed by the construction method of the present invention. ing. Below, the construction procedure of the side groove 1 shown in FIG. 1 is demonstrated.

First, as shown in FIG. 2, the existing cover plate 3 is removed from the existing gutter body 2.
The side groove main body 2 is a concrete block having a substantially U-shaped cross section, and, as shown in FIG. 2, a water collecting passage 4 extending in the longitudinal direction is formed in the internal space by a bottom portion 2a and left and right side walls 2b. The left and right lid hooks 6 on which the removed lid 3 is installed are formed in the upper surface opening 5 of the side groove body 2 so as to be positioned on the inner surface of the upper end of both side walls 2b.

  When the existing cover plate 3 is removed, as shown in FIG. 3, the existing impermeable pavement surface layer 32 on the roadbed 31 adjacent to the existing gutter body 2 is removed and both side walls 2b of the existing gutter body 2 are removed. The upper part 2c is cut off at a position lower than the upper surface of the roadbed 31 in accordance with the thickness of a water-permeable cover plate 7 to be newly provided later.

  Next, as shown in FIG. 4, a convex portion 2e is provided on the cut surface 2d of the side walls 2b of the side groove body 2 so that the upper surface is substantially at the same level as the upper surface of the roadbed 31, and a new lid is applied. 6 'is formed. The lid hook 6 ′ is provided with a mold on the inside of the cut surface 2 d of the both side walls 2 b, and concrete is placed from above to form a convex portion 2 e. Then, a plurality of water permeable cover plates 7 having the same upper surface as the upper surface of the ground 31 are newly and continuously installed on the newly provided lid hook 6 '.

The newly installed water-permeable cover plate 7 has a water permeability of 1.0 × 10 ⁻² cm / second or more, and is made of cement made of aggregate made of natural stone, sludge, crushed stone or the like having a particle size of about 1 mm to 10 mm. These are mixed and kneaded, and those made of concrete having durability and weather resistance having water-permeable voids that improve drainage inside are used. In addition, a rust-proof reinforcing bar is disposed inside the concrete, and after solidification, the compressive strength, tensile strength, impact properties, toughness, etc. can be improved, thereby reducing the weight of the cover plate 7, It is possible to increase the strength.

  The width of the water-permeable cover plate 7 may be the same as the width of the conventional cover plate, but is narrower than the width of the conventional cover plate, that is, the left and right widths of the upper surface opening 5 of the side groove body 2 You may use the thing of a little small size with respect to the width. Thereby, it is not necessary to newly manufacture a dedicated size cover plate from the mold, and an optimal cover plate can be appropriately selected from a plurality of existing sizes. In this case, the gap formed between the left and right side surfaces of the water-permeable cover plate 7 and the inner surface of the side wall at the back of each cover hook 6 'is filled with a filler such as asphalt or mortar. The rattling between the main body and the side groove body 2 is eliminated.

  Next, as shown in FIG. 5A, the notch portions 7a and 7a are placed on the notch portions 7a and 7a for the cue formed on the mating surfaces of the adjacent water-permeable cover plates 7 and 7. The plug body 20 is closed from the above. As shown in FIGS. 5 (B) and 5 (C), the plug body 20 has a head portion 20a that closes the cue cutout portions 7a and 7a from above, and extends downward from the lower surface of the head portion 20a and is elastic. The pair of foot portions 20b that can be inserted vertically through the cutout portions 7a and 7a while being deformed, and locking portions 20c and 20c that extend outward from the tips of the foot portions 20b and 20b. When the foot portions 20b and 20b are inserted vertically through the cutout portions 7a and 7a, the locking portions 20c and 20c at the lower ends thereof are locked to the lower surface of the water-permeable cover plate 7 by the elastic return force of the foot portion 20b. It has become.

Next, as shown in FIG. 5 and FIG. 6, the coefficient of water permeability is 1.0 over the entire upper surface of each of the newly installed water-permeable cover plates 7 installed on the both side cover 6 ′ of the gutter body 2 from the roadbed 31. The water-permeable sheet 8 having a weight per unit area of 60 g / m ² is disposed at × 10 ⁻² cm / second or more. The water-permeable sheet 8 serves to prevent the outflow / runoff of the cushion sand 9 described later and to ensure drainage of rainwater from the water-permeable pavement block 10 described later to the side grooves. An m ² water-permeable sheet is used. For example, there is a polyester long fiber nonwoven fabric sheet.

  Next, as shown in FIG. 6, cushion sand 9 having a particle size of 4.75 mm or less is laid across the entire upper surface of the water-permeable sheet 8 disposed on the roadbed 31 and the water-permeable cover plate 7. The cushion sand 9 has a role of absorbing irregularities of the water-permeable pavement block 10 described later.

Next, as shown in FIGS. 7 and 8, a plurality of water-permeable pavement blocks 10 are laid without gaps on the cushion sand 9 laid over the entire upper side of the roadbed 31 and the water-permeable cover 7. The water-permeable pavement block 10 has a water permeability coefficient of 1.0 × 10 ⁻² cm / second or more, and is made of an aggregate made of natural stone, sludge, crushed stone or the like having a particle size of about 1 mm to 10 mm, and cement-based An inorganic material (Portland cement, blast furnace slag cement, silica cement, fly ash cement, alumina cement, etc.) mixed, kneaded and press-molded is used. Moreover, what mixed and knead | mixed the said aggregate with glass powder, clay, and the binder which has the characteristic melt | dissolved below below sintering temperature can also be used. Each of these molded products and fired products has a water-permeable gap that makes drainage good inside, and has durability and weather resistance.

  Reference numeral 33 denotes a curb installed on the shoulder side of the roadway 40. In the roadway 40, a water-permeable or water-impermeable pavement surface layer 34 is formed on the roadbed 31. The gutter body 2 is supported by foundation concrete 35 in the ground and crushed stone 36 below it.

  According to the side gutter constructed according to the above procedure, rainwater that falls on the permeable pavement block 10 of the sidewalk 30 passes through the surface or the inside of the permeable pavement block 10, passes through the cushion sand 9, and the permeable sheet 8. The water passes through the inside of each water-permeable cover plate 7 and flows down to the water collecting passage 4 inside the gutter body 2 to be collected.

  Since the water-permeable sheet 8 prevents the cushion sand 9 from flowing out, and the water-permeable sheet 8 captures dust, the upper surface of the water-permeable cover plate 7 underneath is clogged, and the water-permeable performance and water-collecting performance are obtained. It is possible to maintain and exhibit the water collecting function of the side groove after construction for a long period of time without lowering.

  The permeable cover plate 7 is buried and the permeable pavement block 10 continuing from above the roadbed 31 is laid on the entire surface up to the curbstone 33 at the road boundary, creating a safe and safe walking space on the entire sidewalk 30. can do.

  FIG. 9 shows a second embodiment of the present invention, in which the water permeable sheet 8 is arranged from the upper surface of the existing pavement surface layer 32 to the entire upper surface of the newly installed water permeable cover plate 7 ′ and the upper surface of the gutter body 2. The cushion sand 9 is laid on the entire upper surface of the water-permeable sheet 8, and the water-permeable pavement block 10 is laid on the entire upper surface of the cushion sand 9 without any gaps. In this embodiment, since the upper surface of the permeable cover plate 7 ′ installed on the lid hook 6 of the side groove body 2 is lower than the upper surface of the side groove body 2, the laying thickness of the cushion sand 9 is set to the upper surface of the side groove body 2. The cushion sand 9 is laid so that a predetermined thickness is maintained on the basis of the level.

  The water permeable sheet 8 may be laid in accordance with the concavo-convex shape of one sheet from the upper surface of the existing pavement surface layer 32 to the upper surface of the water permeable cover plate 7 ′ and the upper surface of the side groove body 2, As shown in FIG. 9, the water-permeable sheet 8 may be laid separately. In this case, the water-permeable sheet 8 can be reliably laid on the corners of both inner side surfaces of the side groove main body 2 on the lid.

  FIG. 10 shows a third embodiment of the present invention, and shows a case where the upper surface of the water-permeable cover plate 7 ″ installed on the lid hook 6 of the side groove body 2 is higher than the upper surface of the side groove body 2. In the present embodiment, the cushion sand 9 is laid so that the predetermined thickness is maintained on the cushion sand 9 on the basis of the upper surface level of the water-permeable cover plate ″. . In addition, the water-permeable sheet 8 extends from the upper surface of the pavement surface layer 32 to the upper surface of the water-permeable cover plate 7 ″ and the upper surface of the side groove main body 2 according to the uneven shape thereof.

  The side groove construction method according to the present invention can be used as a method for easily constructing a side groove having a water-permeable pavement in a short period of time and at a low cost by using an existing side groove substantially as it is.

The 1st Embodiment concerning the present invention is shown, and the explanatory view showing the side groove constructed by the construction method of the present invention, FIG. 1 is a cross-sectional view showing a construction procedure of the side groove shown in FIG. 1 and showing a state in which an existing cover plate is removed from an existing side groove main body; Sectional drawing which shows the state which removed the pavement surface layer adjacent to the side groove main body shown in FIG. 2, and excised the upper part of the side wall of the side groove main body, Sectional drawing which shows the state which installed the newly installed water-permeable cover for the lid hook in the opening part of the side groove | channel main body shown in FIG. 3, The top view which shows the state which has arrange | positioned the water-permeable sheet | seat which continues from a roadbed on the upper surface of the newly installed cover plate shown in FIG. Sectional drawing which shows the state which laid cushion sand on the water-permeable sheet | seat shown in FIG. Sectional drawing which shows the state which laid the water-permeable pavement block on the cushion sand shown in FIG. FIG. 7 is a plan view of the side groove shown in FIG. The 2nd Embodiment which shows the 2nd embodiment concerning the present invention is explanatory drawing which shows the side groove constructed by the construction method of the present invention, The 3rd Embodiment which concerns on this invention is shown, and it is explanatory drawing which shows the side groove constructed | assembled by the construction method of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side groove 2 Side groove main body 2a Bottom part 2b Side wall 2c Upper part of a side wall 2d Side surface cut-out surface 2e Convex part 3 Cover plate (existing cover plate)
4 Catchment channel 5 Upper surface opening 6,6 'Lid 7,7', 7 '' Permeable lid (new lid)
DESCRIPTION OF SYMBOLS 8 Permeable sheet 9 Cushion sand 10 Permeable pavement block 20 Plug body 20a Head part 20b Foot part 20c Locking part 30 Sidewalk 31 Subbase 32 Impervious pavement surface layer 33 Curb 34 Pavement surface layer 35 Basic concrete 36 Crushed stone 40 Roadway

Claims (7)

Remove the lid from the gutter body of the existing gutter,
A plurality of water-permeable cover plates are newly installed on the lid of the same groove body,
From the upper surface of the pavement surface layer adjacent to the existing gutter or from the upper surface of the roadbed after the removal of the pavement surface layer, the entire upper surface of each permeable cover plate is arranged,
Lay cushion sand on the entire upper surface of the water-permeable sheet,
A method for constructing a gutter characterized by laying a plurality of permeable pavement blocks over the entire top surface of the laid cushion sand. Remove the pavement surface layer adjacent to the existing gutter from the roadbed,
The side groove according to claim 1, characterized in that upper sides of both side walls of the side groove body projecting from the upper surface of the roadbed are cut to newly install a lid hook, and a plurality of water-permeable lid plates are installed on the newly installed lid hook. Construction method. Remove the pavement surface layer adjacent to the existing gutter from the roadbed,
The upper part of both side walls of the gutter body is cut at a position lower than the upper surface of the roadbed in accordance with the thickness of the newly permeable lid, and the upper surface is substantially the same level as the upper surface of the roadbed on the cut surface of both side walls. The side groove construction method according to claim 1, wherein the lid hook is newly provided as described above.   When the upper surface of the water-permeable cover plate installed on the lid of the side groove main body is lower than the upper surface of the side groove main body, the laying thickness of the cushion sand after the arrangement of the water-permeable sheet is based on the upper surface level of the side groove main body. 4. The side groove construction method according to claim 1, wherein cushion sand is laid so that a predetermined thickness is maintained thereon.   When the upper surface of the water-permeable cover plate installed on the lid of the side groove main body is higher than the upper surface of the side groove main body, the laying thickness of the cushion sand after placing the water-permeable sheet is based on the upper surface level of the water-permeable cover plate. 5. The method for constructing a gutter according to claim 1, wherein cushion sand is laid so that a predetermined thickness is maintained thereon.   The plug body for closing the cutout portion from above is attached to the cutout portion for the cue formed on the mating surface of the adjacent water-permeable cover plates installed on the lid hook of the side groove main body. The method for constructing a gutter according to any one of claims 1 to 5.   The plug body includes a head part that closes the cut-out part for a cue from above, a pair of foot parts that extend downward from the head part and can be inserted into the cut-out part while being elastically deformed, and each foot part. An engagement portion that extends outward from the distal end and is engaged with the lower surface of the water-permeable cover plate in a state where the pair of foot portions are vertically inserted through the cutout portion. Item 7. A method for constructing a gutter according to item 6.

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