JP2008261165A - Drainage device for walkway/roadway boundary - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a steel member from being damaged by corrosion caused by allowing part of the rainwater flowing on the walkway to flow in a direction of downward floor slab concrete through a gap in a joint face between a back plate of a curbstone and a cross section of a walkway pavement layer without flowing over an upper surface of the curbstone. <P>SOLUTION: A hollow curbstone-like drainage channel 1 is provided at a boundary section between the walkway 2 and the roadway 3. The joint face between the back plate 7 of the curbstone-like drainage channel 1 and the walkway pavement layer 2b, and the joint surface between a front plate 10 and a roadway pavement layer 3b are respectively provided with walkway-side rear water-intake openings 13a, 13b actively introducing the rainwater penetrating into the pavement layer into the drainage channel 1, and a roadway-side front water-intake opening 13c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure of a drainage groove provided at a boundary portion between a sidewalk portion and a roadway portion on a road.

  Conventional drainage devices installed on the road are generally installed on the shoulders of the roadway, and rainwater flowing on the sidewalk overflows over the curb provided at the boundary between the sidewalk and the roadway. Then, after flowing in the direction of the lower roadway, it is discharged into a drain pipe provided on the shoulder of the roadway.

  As a concrete example of the drainage groove as described above, rain water that falls on the sidewalk or on the roadway is configured by a curb stone provided on the shoulder of the roadway with a hollow body made of a metal plate such as steel or stainless steel. Is introduced into the drainage channel through a drainage hole established in the lower side of the curb-like hollow drainage channel, and the rainwater collected in this way is discharged out of the road through a drainage pipe provided at a predetermined interval. Such a structure is known.

JP 2005-68693 A

  In the conventional drainage device as described above, the curbstone provided on the shoulder portion of the roadway is constituted by a metal hollow body, and the rain water falling on the sidewalk or the roadway is separated from the lower side of the curblike hollow drainage groove. Because it is introduced into the drainage ditch from the drainage hole established in the section, it can be introduced into the metal hollow curb with sufficient margin without overflowing rainwater on the shoulder even in heavy rain, and the drainage effect can be effectively demonstrated Has advantages.

  On the other hand, in the drainage device of the road, the drainage device provided in the bridge structure such as the road bridge has a deficiency in the structure of the drainage device provided in the shoulder of the road. It has been pointed out that there is a fatigue phenomenon in which a large amount of permeated water is generated and the concrete becomes gravel, and environmental degradation that corrodes the reinforcing bars and steel girders and lowers the function of floor slabs and bridges.

  After investigating the reasons why such a problem occurs, this drainage device was initially installed on the shoulder of the roadway, so the rainwater flowing on the sidewalk is separated from the sidewalk and the roadway. It was thought that it would flow over the curb at the border of the road and into the drainage on the shoulder of the roadway.

  However, some of the rainwater on the sidewalk penetrates directly into the pavement layer, or passes through the gap at the joint surface between the curb back plate and the pavement cross section of the sidewalk, toward the inside and underside of the filled concrete below. In addition, some of the rainwater on the roadway penetrates directly into the pavement layer, or passes through the gap between the curb front plate and the cross section of the roadway pavement layer. As a result, it has been found that there is a problem that rainwater cannot be properly introduced into the curb-like drainage device provided at the boundary between the sidewalk and the roadway.

  The present invention provides a curb-like drainage groove having a hollow interior at the boundary between the sidewalk and the roadway as a means for solving the above-mentioned problems in the conventional drainage device for the roadway boundary. Provide an internal water intake that actively introduces rainwater that has penetrated into the pavement layer at the joint surface with the sidewalk pavement layer cross section in the curb-like drainage ditch and at the joint surface with the roadway pavement layer cross section. Thus, it is an object to appropriately improve the fatigue durability of floor slab concrete by appropriately draining the permeated water into the roadway and the sidewalk into the curb drainage.

  The pedestrian boundary drainage device of the present invention is a curb-like shape having a L-shaped cross section in a direction perpendicular to the road axis direction and a hollow inside as a specific means for that purpose. It is a drainage ditch, the upper surface has the same height as the surface of the sidewalk, the back plate is joined to the cross section of the pavement layer of the sidewalk, and the lower side of this upper water collection channel, the upper surface is the roadway The lower catchment channel has the same height as the surface of the upper part, and the front plate extends forward so as to join the cross section of the pavement layer of the roadway part, and the front surface of the upper catchment channel and the upper surface of the lower catchment channel Rainwater that permeates from the side of the sidewalk to the side of the pavement layer into the side of the pavement layer on the back plate of the upper waterway and the lower waterway that has a bridge water intake at the intersection corner and is joined to the cross section of the pavement layer. On the front plate of the lower catchment channel that joins the cross section of the pavement layer on the sidewalk side for introduction Characterized in that a roadway side front intake port for introducing the rainwater to penetrate into the roadway section pavement layer direction to the drainage groove from the roadway section.

  The sidewalk side rear water intake and roadway side front water intake established on the back plate and front plate forming the upper and lower water collecting channels of the curb shaped drainage channel are predetermined along the length direction of the curb shaped drainage channel. It is preferable that they are provided so as to be spaced apart from each other.

  In addition, the permeated water that has penetrated into the pavement layer is formed in the lower part of the outer side of the side water intake on the sidewalk and the front intake on the side of the roadway that is established on the back plate and front plate of the upper and lower water collection channels in the curb drainage. It is preferable to provide a water intake guide flange for introduction into the drainage groove.

  In addition, the sidewalk side rear intake and the roadway side front intake for introducing rainwater flowing out from the sidewalk to the roadway into the upper and lower watersheds are the sidewalk pavement layer on the back plate of the upper waterway It is preferable to be provided on the joint surface with the cross section and the joint surface with the bottom portion of the filled concrete in the back plate of the lower catchment channel.

  Note that the drainage groove composed of the upper and lower drainage channels is structured so as to have a continuous length along the road axis direction, or is discrete on the road surface like a drainage pipe. It may be of a structure provided automatically.

  In the drainage device of the present invention, the permeated water that flows inward into the sidewalk pavement layer is introduced into the drainage ditch on the back plate of the upper and lower water collection channels to be joined to the sidewalk pavement layer cross section of the hollow curb drainage. Since the side water intake for the sidewalk is provided, the rainwater that flows from the sidewalk to the drainage groove on the roadside shoulder is provided on the shoulder of the roadway and does not overflow the top surface of the curb and the sidewalk pavement. Even if there is rainwater that permeates into the pavement layer from the joint with the layer cross section, these permeated water will be appropriately discharged into the drainage channel from the side water intake on the sidewalk side opened on the back plate, Prevents the penetration of rainwater into floor slab concrete and filled concrete, prevents fatigue due to graveling of concrete, suppresses corrosion of rebar and steel, and improves the environmental durability of floor slabs and bridges be able to.

  In addition, the front plate of the lower drainage channel that joins the cross section of the pavement layer of the curb drainage channel is also provided with a front intake on the side of the roadway for introducing the permeated water that has flowed into the pavement layer into the drainage channel. Therefore, even if some rainwater flowing on the roadway penetrates into the pavement layer from the joint between the front plate of the lower catchment channel and the cross section of the pavement layer, the water intake on the roadside side of the front plate is It is properly discharged into the drainage channel through the mouth, and helps to prevent gravel due to penetration of rainwater into floor slab concrete and filled concrete.

  A water intake guide flange for introducing permeated water that has penetrated into the pavement layer into the drainage channel is provided at the lower outer side of the intake port established in the back plate and front plate of the upper and lower catchment channel in the curb drainage channel. By providing it, the permeated water that has penetrated into the pavement layer can be efficiently captured to enhance the drainage effect.

  The drainage device for the pedestrian boundary of the present invention is a sidewalk that introduces rainwater that has penetrated into the surrounding pavement layer into the back plate and the front plate of the upper catchment channel and the lower catchment channel that form the curb drainage channel. Since the side rear intake and the roadway front intake are provided, when drainage pavement is applied to actively promote the penetration of rainwater into the pavement layer, it does not overflow the upper surface of the curb and enters the pavement layer. The permeated water that has permeated can be efficiently discharged into the drainage groove, and a preferable form can be obtained.

  The present invention will be described with reference to the embodiments shown in the drawings. FIG. 1 is a cross-sectional view showing the configuration of a road shoulder portion, as viewed from the direction orthogonal to the road axis, in which the pedestrian boundary drainage device of the present invention is provided At the boundary between the sidewalk part 2 and the roadway part 3, a curb-like drainage groove 1 having an L-shaped cross section in a direction perpendicular to the axial direction of the road and having a hollow inside is provided.

  The curb-like drainage groove 1 is formed of a metal plate such as steel or stainless steel, and the top surface 6 is connected to the surface 2a of the sidewalk portion 2 in a state where the bottom plate 5 is disposed on the floor slab concrete 4 of the road shoulder portion. The upper catchment channel 8 having the same height and the back plate 7 joined to the sidewalk pavement layer 2b, and the upper catchment channel 8 below the upper catchment channel 8, the upper surface 9 being the same height as the surface 3a of the roadway part 3 The front plate 10 is composed of a lower water collecting channel 11 extending forward so as to be joined to the roadway pavement layer 3b.

  At the corner where the front surface 8a of the upper catchment channel 8 and the upper surface 9 of the lower catchment channel 11 intersect in an L shape, the rainwater flowing down from the roadway 3 and the upper surface of the curb drainage 1 from the sidewalk 2 A plurality of window-shaped bridge surface water intakes 12 are provided for flowing rainwater flowing down toward the road shoulder.

  On the other hand, at the height portion where the back plate 7 of the upper catchment channel 8 and the sidewalk pavement layer 2b are in contact with each other in the curb-like drainage groove 1, the upper surface 6 of the curb-like drainage groove 1 does not overflow from the sidewalk surface 2a. In order to discharge rainwater that has penetrated into the gap between the joint surface of the back plate 7 and the sidewalk pavement layer 2b or rainwater that has penetrated directly into the sidewalk pavement layer 2b from the surface 2a of the sidewalk, into the drain groove 1 A sidewalk side rear water intake 13a is provided.

  The sidewalk part 2 is provided with the intermediate packed concrete 14 on the upper surface of the floor slab concrete 4 and the sidewalk part pavement layer 2b is provided on the intermediate packed concrete 14, so that the lower surface part 14a of the intermediate packed concrete 14 is located at the lower part. A similar sidewalk side rear water intake 13b is provided below the back plate 7 of the catchment channel 11 so that it cannot penetrate into the sidewalk pavement layer 2b or be captured by the upper sidewalk side rear water intake 13a. The rainwater that has flowed downward between the back plate 7 of the drainage groove 1 and the side surface of the filled concrete 14 is discharged into the drainage groove 1 through the lower side water intake 13b on the sidewalk side below.

  Furthermore, the front plate 10 of the lower catchment channel 11 joined to the end surface of the roadway pavement layer 3b also has a hole for introducing rainwater that penetrates into the driveway pavement layer 3b from the top of the carriageway 3 into the lower catchment channel 11. A roadway side front water intake 13c is provided.

  As shown in FIGS. 2 and 3, the sidewalk-side rear water intakes 13 a and 13 b and the roadway-side front water intake 13 c are respectively connected to the rear plate 7 and the front plate 10 of the upper water collection channel 8 and the lower water collection channel 11. Along the length direction of the curb-like drainage groove 1, it is established at a predetermined interval. In addition, it is desirable to provide the clogging prevention material 15 like the loofah structure wrapped in the net which takes in rainwater positively in the sidewalk side back surface side water intakes 13a and 13b and the roadway side front surface water intake port 13c.

  In addition, rainwater that has permeated into the pavement layers 2b and 3b is collected on the lower side outside the sidewalk side rear water intakes 13a and 13b opened on the back plate 7 and the roadside front water intake 13c opened on the front plate 10. A water intake guide flange 16 for introducing the water into the water channel 8 and the lower water collecting channel 11 is provided, and the rainwater that has permeated into the water channel 8 is efficiently introduced by the flange 16 on the sidewalk side rear surface water intakes 13a and 13b and the roadway side front water intake port. 13c can be guided. Reference numeral 17 in the figure indicates a drain pipe.

  According to the drainage device of the present invention, even if rain water that has fallen on the sidewalk part 2 does not overflow the curb top surface 6 and permeates between the curb and the sidewalk part pavement layer 2b, this permeated rainwater is opened on the back plate 7. Drained into the drainage channel by the sidewalk-side rear water intakes 13a, 13b and the roadway-side front water intake 13c established in the front plate 10, thereby preventing damage to the floor slab concrete and corrosion of the steel parts, and fatigue durability In addition, the environmental durability can be improved accurately.

Sectional drawing which shows the structure of the drainage device for pedestrian road boundary which concerns on this invention. The perspective view which shows the structure of the drainage groove in this drainage apparatus. The perspective view seen from the opposite side of the drainage device shown in FIG.

Explanation of symbols

1: curb drainage,
2: Sidewalk,
2a: Sidewalk surface,
2b: sidewalk pavement layer,
3: Roadway club,
3a: surface of the roadway,
3b: Roadway pavement layer,
4: Floor slab concrete,
5: Bottom plate,
6: Top surface,
7: Back plate,
8: Upper catchment channel,
9: top surface,
10: Front plate,
11: Lower catchment channel,
12: Bridge surface intake,
13a, 13b: Sidewalk side rear intake,
13c: Roadway side front water intake,
14: Filled concrete,
15: Anti-clogging material,
16: Intake guide flange,
17: Drain pipe

Claims (4)

A curb-like drainage groove with an L-shaped cross-section in the direction perpendicular to the road axis direction and a hollow interior provided at the boundary between the sidewalk and the roadway, and the upper surface has the same height as the surface of the sidewalk And the upper drainage channel where the back plate is joined to the cross section of the sidewalk pavement layer, the lower side of the upper catchment channel, the upper surface having the same height as the surface of the roadway, and the front plate is the roadway pavement layer It consists of a lower catchment channel that extends forward to join the cross section,
A bridge water intake is provided at the intersection between the front of the upper catchment and the upper face of the lower catchment,
On the back plate of the upper catchment channel and the lower catchment channel to be joined with the cross section of the pavement part pavement layer, the backside intake on the sidewalk side for introducing rainwater penetrating from the top of the pavement part into the pavement layer into the drainage channel, The front plate of the lower drainage channel that joins the section of the pavement layer on the roadway is provided with a front intake on the roadway side for introducing rainwater that penetrates from the roadway into the pavement layer into the drainage channel. Drainage device for pedestrian road boundary.   Sidewalk side rear water intake and roadway side front water intake established on the back plate and front plate forming the upper and lower water collecting channels of the curb shaped drainage channel are spaced along the length direction of the curb shaped drainage channel. The drainage device for a pedestrian road boundary according to claim 1, wherein the drainage device is provided to be placed.   A water intake guide flange protrudes at the lower part of the outer side of the sidewalk side rear water intake and the roadway side front water intake established on the back plate and front plate that form the upper and lower water collection channels of the curb drainage. Item 1. Pedestrian road boundary drainage device.   The sidewalk side rear intake and the road side front intake for introducing rainwater flowing out from the sidewalk to the roadway into the upper and lower waterway are cross sections of the pavement layer on the back plate of the upper waterway The drainage device for the pedestrian road boundary according to claim 1, wherein the drainage device is provided on a joint surface between the bottom surface and the bottom surface of the lower catchment channel and a bottom surface of the filled concrete.

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