JP5729690B2 - Pavement structure - Google Patents

Description

  The present invention relates to a pavement structure, and more particularly, when a non-permeable pavement and a resin-based seepage pavement are mixed, the end of the resin-based seepage pavement is peeled off by rainwater flowing from the non-permeable pavement side. It is related with the pavement structure which can prevent the malfunction to perform.

  A pavement structure may be formed by connecting an asphalt-type non-permeable pavement such as a general dense-graded asphalt pavement with a penetration type pavement in which elastic aggregates are consolidated with a binder (for example, patent documents) 1). In such a pavement structure, when it rains, an excessive amount of rainwater flows from the non-permeable pavement side, which is difficult for rainwater to penetrate, toward the seepage pavement, and flows into the end of the seepage pavement that becomes the seam. . Moreover, in the joint of the pavement generally made of materials having different elastic coefficients, peeling between the upper pavement and the ground is induced by an impact force or a shearing force caused by traveling of the vehicle or the like. Therefore, when the water-impermeable pavement and the resin-based permeation pavement are mixed, the permeation pavement and its base are easily separated. If rainwater flows there, peeling is further promoted. In particular, peeling easily occurs in a resin-based penetrating pavement formed using a resin-based binder.

  When non-permeable pavement and resin-penetrated pavement are mixed in this way, once separation occurs at the joint between both pavements, the separation becomes increasingly large due to repeated external forces from passing vehicles. Large-scale repair work is required. Therefore, there has been a demand for a pavement structure that can more effectively prevent the peeling of the end portion of the resin-based penetrating pavement that is a trigger for large peeling.

JP 2003-138504 A

  The object of the present invention is to provide a pavement capable of preventing a problem that the end of the resin-based permeation pavement is peeled off by rainwater flowing from the non-permeable pavement side when the non-permeable pavement and the resin-based permeation pavement are mixed. To provide a structure.

Pavement structure of the present invention for achieving the above object, a water-impermeable pavement, a drainage pavement a seam between the resin permeation type paving a binder resin which is a material to consolidate the aggregate is provided, wherein Non-permeable pavement, resin-based infiltration pavement and drainage pavement are pavement with less than 100 ml of permeated water for 15 seconds by on-site permeability tester, pavement of 500 ml or more, pavement of 900 ml or more, respectively. It is characterized in that rainwater from the permeable pavement side is discharged through drainage pavement.

  According to the present invention, the drainage pavement is provided at the joint between the non-permeable pavement and the resin-based permeation type pavement, and the rainwater from the non-permeable pavement side is discharged through the drainage pavement. Even if it is a pavement structure in which a resin-based permeation type pavement is mixed, rainwater from the non-permeable pavement side hardly flows into the resin-based permeation type pavement. Therefore, it is possible to prevent a problem that the end portion of the resin-based penetrating pavement is peeled off by the rainwater.

A drainage base is extended in the longitudinal direction of the road surface in the lower layer on the road shoulder side of the resin-based permeation type pavement, the drainage base has a gap and the gaps are connected, and 15 seconds by the in-situ permeability tester. The test result of the amount of permeated water has a drainage function of 500 ml or more, and the drainage base and the drainage pavement can be connected. In this specification, rainwater that penetrates the resin-based permeation type pavement, flows through the ground surface and pavement to the road shoulder side, moves through the drainage ground, and connects the drainage ground and the drainage pavement. Thus, a drainage network can be widely obtained, and the connection to scattered drainage basins can be smoothed, and as a result, drainage performance can be improved.

  The lower layer of the drainage pavement must be non-permeable pavement so that rainwater does not penetrate into the ground. Therefore, rainwater that has flowed into the drainage pavement flows between the drainage pavement and the non-permeable pavement and is discharged to the road shoulder side, so that the end of the resin-based permeable pavement does not easily peel off.

  As the drainage base, for example, the drainage pavement can be used as it is with the same material as the drainage pavement. Moreover, it can also be set as the specification which embed | buried the water conduit for drainage in the said drainable base | substrate. By using these specifications, the drainage performance can be further improved.

  Examples of the resin-based penetrating pavement include a porous elastic pavement. With this specification, it is possible to prevent peeling of the end of the porous elastic pavement while enjoying the advantages of the porous elastic pavement.

  The length of the drainage pavement in the road surface longitudinal direction is, for example, 0.5 m to 10.0 m. If the length of the drainage pavement is less than 0.5 m, the inflow prevention effect that prevents rainwater from the non-permeable pavement side from flowing into the resin-based permeation pavement may be insufficient. Also, during construction, the leveling workability may be poor and the flatness may be poor, or the rolling may be insufficient and the strength may be poor. On the other hand, even if the length of the drainage pavement exceeds 10.0 m, no further inflow prevention effect can be obtained.

It is a top view which illustrates the pavement structure of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is BB sectional drawing of FIG. 1 which shows the modification of this invention. It is BB sectional drawing of FIG. 1 which shows the modification of this invention. It is a top view which shows the modification of this invention which changed the arrangement | positioning of a drain.

  Hereinafter, the pavement structure of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIGS. 1 to 3, the pavement structure 1 of the present invention has a structure in which a drainable pavement 5 is provided at a joint between a non-permeable pavement 2 and a resin-based permeation pavement 3 constructed on the ground 7. It has become. In general, the pavement structure 1 is slightly inclined downward toward the respective road shoulders with the center line CL interposed therebetween so that rainwater flows on the road shoulder side on the road surface.

  The non-permeable pavement 2 refers to a pavement in which the amount of permeated water for 15 seconds by an in-situ permeability tester is less than 100 ml. The resin-based penetrating pavement 3 refers to a pavement having the permeated water amount of 500 ml or more, and the drainage pavement 5 refers to a pavement of 900 ml or more. An example of the on-site permeability tester is “In-situ Permeability Tester for Drainage Pavement (Separable)” MODEL NO.NKA-701 manufactured by Nikken Co., Ltd.

  The non-permeable pavement 2 is composed of, for example, an upper dense particle size asphalt pavement 2a and a lower coarse particle size asphalt pavement 2b. The thicknesses of the dense grained asphalt pavement 2a and the coarse grained asphalt pavement 2b are about 40 mm to 60 mm, respectively. Rainwater W hardly penetrates into the non-permeable pavement 2. Examples of the non-permeable pavement 2 include such general asphalt pavement or cement pavement.

  The elastic coefficient of the asphalt pavement is 5,000 to 10,000 MPa, and the elastic coefficient of the cement pavement is 10,000 to 40,000 MPa. The drainage pavement also has an elastic modulus of around 5,000 MPa (4,000 to 6,000 MPa) in asphalt pavement, and an elastic modulus of around 8,000 MPa in dense grain asphalt pavement.

  The resin-based penetrating pavement 3 is configured by solidifying an aggregate or the like via a resin-based binder, and has an appropriate gap and the gaps are connected. Therefore, rainwater W is likely to permeate into the resin-based infiltration pavement 3. The resin-based penetrating pavement 3 is mixed with a colorant and other additives as necessary. The thickness of the resin penetration type pavement 3 is about 20 mm to 40 mm. The permeation type pavement includes a water permeable pavement and a drainage pavement.

  The resin-based penetrating pavement 3 is for roadways or sidewalks in which elastic aggregates and hard aggregates are consolidated with urethane resin, for sidewalks, stadiums or parks in which elastic aggregates are consolidated with urethane resin. Elastic pavement for roadway or sidewalk with hard aggregate consolidated with urethane resin, roadway or sidewalk pavement with rigid aggregate consolidated with acrylic resin (MMA), hard aggregate with epoxy resin For example, a solid roadway or sidewalk pavement can be exemplified.

  As the elastic aggregate, waste tire chips, EPDM chips, crushed urethane bumpers, waste rubber belt chips and the like are used. As the hard aggregate, crushed stone, cinnabar sand, ceramics, glass cullet, shell crushed material, slag, alumina and the like are used. As other aggregates, wood chips, waste plastics, etc. can be used for sidewalks.

  In this embodiment, as illustrated in FIG. 2, a water-impermeable pavement 4 a is provided in the lower layer of the resin penetration type pavement 3. Examples of the non-permeable pavement 4a include various asphalt pavements having no water permeability such as a semi-flexible pavement in which cemented milk is filled in an open-graded asphalt pavement. It is also possible to adopt a specification in which a water-permeable pavement is provided in the lower layer of the resin-based penetrating pavement 3.

  As illustrated in FIG. 3, a drainable base 4 b extends in the road surface longitudinal direction in the lower layer on the road shoulder side of the resin-based permeation type pavement 3. That is, on the shoulder side that is lower than the road surface on the center line CL side, the drainage base 4b is disposed on the ground 7, and the resin-based permeation type pavement 3 is disposed thereon. And the drainage foundation | substrate 4b and the drainage pavement 5 are arrange | positioned so that it may connect.

  The drainage base 4b is a base through which rainwater W can permeate and pass by having gaps and the gaps are connected, and the amount of permeated water for 15 seconds by the on-site permeability tester described above is 500 ml. It has the above drainage function. For example, the material of the drainage pavement 5 can be used as it is as the drainage base 4b and can be continuous with the drainage pavement 5.

  The drainage pavement 5 is a pavement that has a gap and allows the rainwater W to permeate and pass through the gap, and for example, crushed stone adjusted to 5 mm to 13 mm or modified Formed by asphalt. Therefore, rainwater W easily penetrates into the drainage pavement 5. In this embodiment, the drainage basin 8 is installed so as to be connected to the drainage pavement 5.

  As illustrated in FIGS. 2 and 3, a water-impermeable base 6 is installed in the lower layer of the drainage pavement 5. The lower layer of the drainage pavement 5 is necessarily non-permeable pavement (non-permeable base 6) so that rainwater W does not penetrate into the ground 7.

  Examples of the non-permeable base 6 include various types of asphalt pavement having no water permeability such as dense grained asphalt pavement. The reason why the non-permeable base 6 is disposed in the lower layer of the drainage pavement 5 is that when the rainwater W penetrates into the ground 7, the ground 7 tends to flow and there is a risk that a pothole or the like is generated. When the ground 7 is non-permeable, it is not necessary to provide the non-permeable base 6 in the lower layer of the drainage pavement 5.

  In the pavement structure 1, since the road surface is inclined downward from the center line CL side toward the road shoulder side, the rain water W generally flows toward the road shoulder side when it rains. Therefore, the rainwater W that has penetrated into the resin-based permeation type pavement 3 flows through the resin-based permeation type pavement 3 and is discharged to a drainage basin 8 or a drainage groove installed on the road shoulder through the drainage base 4b on the roadside. .

  As shown in FIG. 1, when the drainage basin 8 communicates with the drainage pavement 5, the rainwater W flowing on the surface of the water-impermeable pavement 2, the rainwater W flowing on the surface of the resin penetration pavement 3, and the water-impermeable pavement Rainwater W that has permeated on 4 a flows into the drainage pavement 5 and is discharged to the drainage basin 8. Further, the permeated rainwater W flowing in the drainage base 4 b flows into the drainage pavement 5 and is discharged to the drainage basin 8.

  Thus, in the pavement structure 1 of the present invention, rainwater W from the non-permeable pavement 2 side is discharged through the drainage pavement 5 to the drainage basin 8 or the drainage groove. That is, the rainwater W from the non-permeable pavement 2 side is blocked by the drainage pavement 5, so that it is difficult for the rainwater W to flow into the resin penetration pavement 3. Therefore, even if it is a pavement structure in which the water-impermeable pavement 2 and the resin-based permeation type pavement 3 are mixed, the end portion of the resin-based permeation type pavement 3 by the rainwater W (the end portion that becomes a joint with the drainage pavement 5) ) Can be prevented from peeling off.

  The length C in the longitudinal direction of the drainage pavement 5 is preferably, for example, 0.5 m to 10.0 m. If the length C of the drainage pavement 5 is less than 0.5 m, the inflow prevention effect that prevents the rainwater W from the water-impermeable pavement 2 side from flowing into the resin-based permeation type pavement 3 may be insufficient. Also, during construction, the leveling workability may be poor and the flatness may be poor, or the rolling may be insufficient and the strength may be poor. On the other hand, even if the length C of the drainage pavement 5 exceeds 10.0 m, no further inflow prevention effect can be obtained.

  In order to ensure good drainage performance, the width D of the drainage base 4b is preferably about 50 mm to 300 mm.

  As the resin penetration type pavement 3, for example, a porous elastic pavement is used. The elastic modulus of the porous elastic pavement is about 20 to 50 MPa. The porous elastic pavement is formed of, for example, an elastic aggregate such as a waste tire pulverized product, a hard aggregate such as dredged sand, or a urethane resin. With this specification, it is possible to enjoy the merit of porous elastic pavement that has excellent drainage properties and moderate elasticity. Moreover, since the rainwater W from the non-permeable pavement 2 side is blocked by the drainage pavement 5, the rainwater W flows into the end portion of the porous elastic pavement (resin-based permeation type pavement 3) where separation is a concern. It becomes difficult to prevent peeling.

  As illustrated in FIG. 4, a drainage conduit 4c extending in the longitudinal direction of the road surface can be embedded in the drainage base 4b in the lower layer on the road shoulder side of the resin penetration pavement 3. The drainage conduit 4 c is connected to the drainage pavement 5.

  The drainage conduit 4c has a specification that the tube wall has water permeability, and is formed of, for example, a resin three-dimensional solid network or a metal spring. When the drainage conduit 4c is installed, the drainage conduit 4c is disposed, and then the drainage base 4b material and the resin-based permeation pavement 3 material are laid. If the drainage conduit 4c is installed in this way, a large amount of rainwater W from the surroundings can flow into the cavity of the drainage conduit 4c through the tube wall, so that the drainage is further improved.

  In order to improve the flow of water at the connecting portion between the drainable pavement 5 and the drainable substrate 4b, only the connecting portion with the drainable substrate 4b is thin on the shoulder side of the water-impermeable substrate 6 below the drainable pavement 5. And it is also possible to make it the specification which increased the connection area of the drainage pavement 5 and the drainage base 4b.

  As illustrated in FIG. 5, even when the drainage conduit 4 c is not provided in the lower layer on the shoulder side of the resin-based permeation type pavement 3, the drainage property is provided on the shoulder side of the non-permeable base 6 in the lower layer of the drainable pavement 5. It is preferable that only the connecting portion with the base 4b is made thin so that the connection area between the drainage pavement 5 and the drainage base 4b is increased. Thereby, the flow of the water of the connection part of the drainage pavement 5 and the drainage base 4b improves.

  The drainage basin 8 and the drainage groove can be installed on the shoulder side of the resin penetration type pavement 3 as illustrated in FIG. In this way, when the drainage basin 8 communicates with the drainage base 4b, the rainwater W that flows on the surface of the non-permeable pavement 2, the rainwater W that flows on the surface of the resin penetration pavement 3, and the non-permeable pavement 4a The permeated rainwater W flows into the drainage pavement 5. The rainwater that has flowed into the drainage pavement 5 flows into the drainage base 4 b from the inside and is discharged to the drainage basin 8.

  In the present invention, the drainage pavement 5 is located at a position lower than the resin-based permeation type pavement 3 and the resin-based permeation type pavement 3 is inclined toward the drainage pavement 5 in the longitudinal direction of the road surface. The specifications can be such that the drainage base 4b is not provided. In the case of this specification, the permeated rainwater W flowing inside the resin-based permeation type pavement 3 and the rainwater W flowing on the surface of the non-permeable pavement 4a flow toward the drainage pavement 5 in the road surface longitudinal direction. The flowing rainwater W flows into the drainage pavement 5 and is discharged to the drainage basin 8 or the drainage groove.

DESCRIPTION OF SYMBOLS 1 Pavement structure 2 Non-permeable pavement 2a Dense grained asphalt pavement 2b Coarse-grained asphalt pavement 3 Resin system penetration type pavement 4a Non-permeable pavement 4b Drainage foundation 4c Drainage conduit 5 Drainage pavement 6 Non-permeable foundation 7 Ground 8 Drainage

Claims (6)

Drainable pavement is provided at the joint between the non-permeable pavement and the resin-based infiltration pavement in which the binder, which is a material that consolidates aggregates, is a resin-based pavement, and the non-permeable pavement, resin-based infiltration pavement, drainage The pavement is a pavement with an infiltration rate of 15 seconds by an on-site permeability tester of less than 100 ml, a pavement of 500 ml or more, and a pavement of 900 ml or more, and drains rainwater from the non-permeable pavement side through drainage pavement. A pavement structure characterized by having a structure to do. A drainage base is extended in the longitudinal direction of the road surface in the lower layer on the road shoulder side of the resin-based permeation type pavement, the drainage base has a gap and the gaps are connected, and 15 seconds by the in-situ permeability tester. The pavement structure according to claim 1, wherein the test result of the amount of permeated water has a drainage function of 500 ml or more, and the drainage base and the drainage pavement are connected.   The pavement structure according to claim 2, wherein the drainage base is made of the same material as the drainage pavement.   The pavement structure according to claim 2 or 3, wherein a drainage conduit pipe is embedded in the drainage base.   The pavement structure according to any one of claims 1 to 4, wherein the resin penetration type pavement is a porous elastic pavement.   The pavement structure according to any one of claims 1 to 5, wherein a length of the drainage pavement in a road surface longitudinal direction is set to 0.5 m to 10.0 m.

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