JP2018012937A - Drain ditch unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain ditch unit, made hard to cause reduction in the drainage function without executing maintenance.SOLUTION: A drain ditch unit comprises (a) a bottom surface part 24 for making drain water flow, a standing-up part 23 of becoming a front side wall by standing up from an end part of the bottom surface part 24, a flowing water plate 20 having the standing-up part 23 and a back face part 25 for standing up from the end part of the opposite side bottom surface part 24, and (b) a guard plate 10 detachably provided as a lid by placing on the flowing water plate 20 and boring a flowing water hole 14, and partition plates 21 and 22 are projected in a plurality in parallel to a flow passage of drain water on the upper surface side of the bottom surface part 24 of the flowing water plate 20, and a clearance is provided between the guard plate 10 and the tips of the partition plates 21 and 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steel drainage groove unit that is installed on a road shoulder or the like and drains a road surface.

  Conventionally, a steel drainage groove unit is a hollow unit that is continuously arranged on a road shoulder or the like, guides and drains rainwater on the road surface to a drainage mass, and drains a large amount of rainwater or the like. For example, see Patent Document 1).

JP 2005-54491 A

  However, the conventional drainage unit is difficult to perform maintenance such as cleaning to remove dust accumulated inside, especially on the shoulders of places where work is difficult, such as on bridges, in intersections, roads in tunnels, railway tracks, etc. When installed, there was a problem that maintenance was particularly difficult. On bridges, etc., there was a problem that it was necessary to make a scaffold and inspect the drainage mass using a PVC pipe, and it was bad in appearance and work. If the maintenance is not enough, there is a problem that as time passes, it becomes easy to rust, and mud gets clogged and grass grows and the drainage function is remarkably lowered.

  Accordingly, a first object of the present invention is to provide a drainage groove unit that solves the above-described problems and makes it difficult for the drainage function to deteriorate without maintenance.

In order to achieve the above object, according to the first aspect of the present invention, (a) a bottom surface portion through which drainage flows, a rising portion that rises from the end portion of the bottom surface portion and becomes a wall on the front side, A flowing water plate having a back portion rising from the bottom end portion;
(B) a guard plate that is placed on the flowing water plate and is detachably provided as a lid, and has a flowing water hole;
Have
A drainage groove characterized in that a plurality of partition plates project in parallel with the drainage flow path on the upper surface side of the bottom surface portion of the water flow plate, and a gap is provided between the guard plate and the tip of the partition plate. Provide units.

  According to the first aspect of the present invention, if the amount of water entering from the water flow hole is small, the range in which the drainage flows automatically is narrowed without adjustment, and if the amount of water entering from the water hole is large, the adjustment is performed. Even if it is not, it is possible to widen the range in which drainage flows automatically, so that it is difficult for sediment or the like to accumulate, and therefore it is possible to make it difficult for the drainage function to deteriorate without maintenance.

  The height of the plurality of partition plates is preferably higher as the partition plate on the back side of the running water plate. The width of the flow path according to the amount of water entering from the flow hole can be adjusted in three or more stages.

  According to the present invention, it is possible to make it difficult for the drainage function to deteriorate without maintenance.

It is Example 1 perspective view of the drainage unit of this invention. It is a perspective view of the state where the guard plate was opened in Example 1 of the drain ditch unit of the present invention. It is a front view of Example 1 of a drain ditch unit of the present invention. It is a top view of Example 1 of a drain ditch unit of the present invention. It is a right view of Example 1 of the drainage unit of this invention. It is a left view of Example 1 of the drainage unit of the present invention. It is a rear view of Example 1 of the drainage unit of the present invention. It is an installation figure of Example 1 of a drain ditch unit of the present invention. It is a bottom view of Example 1 of a drain ditch unit of the present invention. It is AA sectional drawing of Example 1 of the drainage groove unit of this invention. It is BB sectional drawing of Example 1 of the drainage groove unit of this invention. It is a perspective view of the combined part of the flowing water plate and reinforcement plate in Example 1 of the drainage groove unit of the present invention.

  EXAMPLES Hereinafter, although this invention is concretely demonstrated using an Example about this invention, this invention is not limited to these.

  The drainage groove unit of the first embodiment has a configuration in which the flow path width changes stepwise according to the amount of wastewater flowing in, and thus can prevent a situation where maintenance is required such as accumulation of mud.

{Constitution}
FIG. 1 is a perspective view of a drainage groove unit according to a first embodiment of the present invention. The drainage groove unit 1 is made of steel, and is a hollow unit for continuously draining rainwater on the road surface to a drainage mass by arranging the backside on the sidewalk side and the front side on the roadway side, and continuously arranging it on the road shoulder. It is particularly suitable for installation on bridges, in intersections, roads in tunnels, and in tracks. The drainage channel unit 1 also has a role as a curb, and the sidewalk is made higher than the roadway by pouring asphalt or the like into the back side of the drainage channel unit.

  The drainage groove unit 1 includes: (a) a bottom surface portion 24 through which drainage flows, a rising portion 23 that rises from an end portion of the bottom surface portion 24 and becomes a wall on the front side, and an end portion of the bottom surface portion 24 opposite to the rising portion 23. A flowing water plate 20 having a rear surface portion 25 rising, and (b) a guard plate 10 that is detachably provided as a lid on the flowing water plate 20 and has a flowing water hole 14 formed therein. A plurality of partition plates 21 and 22 project from the upper surface side of the portion 24 in parallel with the drainage flow path, and a gap is provided between the guard plate 10 and the tips of the partition plates 21 and 22.

  Details are shown below. The guard plate 10 is formed into a right-angled S-shape by bending a steel plate into three surfaces continuously in a crank shape. That is, the guard plate 10 is continuous with the upper surface portion 11, the front surface portion 12 whose upper end is continuous with one end of the upper surface portion and is a surface perpendicular to the upper surface portion 11, and the lower end of the front surface portion 12. A receiving surface portion 12 is formed as a surface perpendicular to the upper surface portion and the opposite side. A plurality of water flow holes 14 through which rainwater enters are formed in the corner portion formed by the front surface portion 12 and the receiving surface portion 13. In FIG. 1, the number of water holes 14 is eight, but the number of water holes is not limited to this. Hereinafter, the front surface portion 12 side will be described as the front surface side of the drainage groove unit 1. In the present embodiment, the angle formed by the front surface portion 12 and the receiving surface portion 13 or the upper surface portion 11 is 90 degrees, but is not limited to this, and even if the lower portion of the front surface portion is oblique to the front side. It may be slanted in the direction in which the upper portion of the front portion protrudes to the front side.

  FIG. 2 is a perspective view showing a state where the guard plate is opened in the first embodiment of the drainage groove unit of the present invention. The flowing water plate 20 is formed by bending a steel plate into a right-angled L-shape and further bending the front-side tip upward at a right angle so that the back side is the back portion 25, the bottom surface side is the bottom surface portion 24, and the wall portion where the front-side tip is raised is raised. The portion 23 is disposed below the guard plate 10 so as to form a hollow region from the back side of the guard plate 10 toward the lower side of the front side, and the height of the front end is the receiving surface portion 13 of the guard plate 10. The height is the same. That is, the guard plate 10 serves as a lid of the flowing water plate 20 whose upper side is open. A first partition plate 21 and a second partition plate 22 are welded to the flowing water plate 20 in parallel over the entire length in the longitudinal direction of the drainage groove unit on the upper surface side of the bottom surface portion 24. An L-shaped reinforcing angle 73 is provided outside the rising portion 23, which is a bent portion on the front side of the flowing water plate 20, so as to protect the corner portion on the lower front side of the flowing water plate 20.

  The drainage groove units 1 are arranged in a line at the end of the roadway, and are embedded so that the upper surface of the receiving surface portion 13 is flat with respect to the roadway surface, and adjacent drainage groove units are connected. The guard plate 10 and the flowing water plate 20 are each formed by bending or roll homing. It is also possible to integrally form the running water plate 20 and the partition plate plates 21 and 22 by processing by roll homing and crushing bending.

  On the back side of the guard plate 10, reinforcing plates 60 a, b, and c are welded to the back side portion of the corner formed by the front surface portion 12 and the receiving surface portion 13 so as not to overlap the flowing water hole 14. Further, rib plates 30 a, b, and c are provided on the back side of the front surface portion 12 and the upper surface portion 11 so as to be perpendicular to the longitudinal direction of the drainage groove unit 1. Even when a car tire or the like is placed on the receiving surface part 13, a car tire or a car body hits the front face part 12, or a car tire or car body gets on the upper face part 11, the reinforcing plate 60 or the rib plate 30. This serves to protect the hollow drainage groove unit from being crushed. Moreover, the edge of the rib plate 30 is welded to the back side of the upper surface part 11 and the front surface part 12, and when the guard plate 10 is closed, the side of the flowing water plate hits one side.

  The first partition plate 21 and the second partition plate 22 provided on the upper surface side of the bottom surface portion 24 of the water flow plate 20 are provided over the entire length in the longitudinal direction of the drainage groove unit. , And led to the drainage mass through a plurality of drainage groove units connected continuously in the longitudinal direction. An L-shaped front receiving angle 71 is welded to the inside of the rising portion 23 of the L-shaped flowing water plate 20, that is, the back surface side when viewed from the front side. The front receiving angle 71 has one side on which the end of the receiving surface portion 13 is placed when the guard plate 10 is closed, and the other side welded to the front side front end back side of the flowing water plate 20. Further, an L-shaped back receiving angle 72 is welded to the upper inner side of the back surface of the flowing water plate 20, that is, the front surface side when viewed from the front side. The back surface receiving angle 72 has one side on which the end portion of the upper surface portion 11 is placed when the guard plate 10 is closed, and another side welded to the upper surface side of the back surface portion 25 of the flowing water plate 20.

  The guard plate 10 and the flowing water plate 20 are a connecting plate 40 b provided on the back side of the upper surface portion 11 of the guard plate 10, a chain 80 a connected to the connecting plate 40 a of the flowing water plate 20, a connecting plate 40 d and a connecting plate of the flowing water plate 20. It is connected with a chain 80b connected to 40c. Connection plates 50a and 50b used for bolting for connecting drainage groove units arranged side by side are provided on the left and right ends of the back surface 25 of the water flow plate 20. In addition, the upper part of connection plate 40a, c is provided with the notch for pinching and holding | maintaining the edge part of a guard plate, when the guard plate 10 is opened upwards and it raises. FIG. 2 shows a state in which the guard plate 10 is sandwiched between the notches.

  The guard plate 10 is stabilized by placing the upper surface portion 11 on the back surface receiving angle 72 and supporting the back side of the rib plate 30 on the back surface of the flowing water plate 20 and placing the receiving surface portion 13 on the front surface receiving angle 71. Held.

  FIG. 3 is a front view of Embodiment 1 of the drainage groove unit of the present invention. The lower part of the flowing water plate 20 covered with the guard plate 10 is covered with a reinforcing angle 73.

  FIG. 4 is a plan view of the first embodiment of the drainage groove unit of the present invention. Anchor pipes 90 a, b, c, d, e, f, and g are provided on the back side of the back surface portion 25 of the flowing water plate 20.

  FIG. 5 is a right side view of the first embodiment of the drain groove unit of the present invention. FIG. 6 is a left side view of the first embodiment of the drainage groove unit of the present invention. In both figures, the chain is not shown. The upper corner of the rib plate 30 corresponding to the back side of the intersection of the upper surface portion 11 and the front surface portion 12 of the guard plate 10 is provided with a scallop 31 because the guard plate 10 and the rib plate 30 are connected by welding. The lower end of the rib plate 30 is separated from the upper ends of the first partition plate 21 and the second partition plate 22. The height of the first partition plate 21 is lower than that of the second partition plate 22. The space formed by the back surface portion 25 and the bottom surface portion 24 of the flowing water plate 20, the lower end of the rib plate 30, and the receiving surface portion 13 of the guard plate 10 is partitioned by the rising portion 23 and the first partition plate 21 on the front side. The first flowing water part 110 to be made, the second flowing water part 120 between the two partition plates made by partitioning with the first partition plate 21 and the second partition plate 22, the back surface part 25 and the second partition. Both are divided into the third flowing water part 130 that is partitioned by the plate 22 and shares the upper space.

  FIG. 7 is a rear view of the first embodiment of the drainage groove unit of the present invention. Three anchor pipes 90a, b, c on the upper side and four anchor pipes 90d, e, f, g on the lower side are welded side by side on the back side of the back surface portion 25 of the flowing water plate 20, that is, the back side of the drainage groove unit 1. It is. Each anchor pipe 90 has a cylindrical shape, and an L-shaped anchor bar is passed therethrough.

  FIG. 8 is an installation diagram of Embodiment 1 of the drainage groove unit of the present invention. The drainage groove unit 1 is laid on the road shoulder with the upper surface of the receiving surface portion 13 being flush with the road surface of the roadway. The anchor bar is fixed to the anchor rebar on the sidewalk side so that the other end perpendicular to one end passed through the anchor pipe 90 protrudes at a right angle from the back surface of the drainage unit 1.

  FIG. 9 is a bottom view of the first embodiment of the drainage groove unit of the present invention. The drainage groove unit 1 is installed on the ground so that the bottom surface 24 of the flowing water plate 20 and the bottom surface of the reinforcing angle 73 are in contact with the ground.

  FIG. 10 is an AA cross-sectional view of the first embodiment of the drain groove unit of the present invention. Moreover, FIG. 11 is BB sectional drawing of Example 1 of the drain groove unit of this invention. Furthermore, FIG. 12 is a perspective view of a combined portion of the flowing water plate and the reinforcing plate in the first embodiment of the drain groove unit of the present invention. As shown in these figures, most of the waste water taken into the drain groove unit 1 from the water flow hole 14 is first guided to the first water flow portion 110. When the amount of drainage increases, the amount overflowed from the first flowing water part 110 is drained from the gap between the upper end of the first partition plate 21 and the back surface of the receiving surface part 13 which is the bottom of the guard plate 10. Overflow to 120 and led. When the amount of drainage further increases, the amount overflowing from the second flowing water part 120 gets over the upper end of the second partition plate 22 and is led to overflow into the third flowing water part 120. With this configuration, according to the present embodiment, the amount of space through which drainage flows can be adjusted according to the amount of rain.

  The drainage capacity is a value obtained by multiplying the water flow cross-sectional area by the average flow velocity. If the flow rate is too high, surface wear or the like may occur, but if the flow rate is too low, sedimentation may occur. Assuming a standard rainfall intensity (3-year probability 10 minutes rainfall intensity) of 70 to 100 mm / h, the drainage groove strength is calculated, but there is not much rainfall in daily life, and 5 to 20 mm / h of rain falls. There are many cases. However, in a conventional drainage ditch assuming a rainfall of 70 to 100 mm / h, in the case of rain of about 5 to 20 mm / h, it is not possible to secure a sufficient flow rate for the earth and sand contained in the drainage to flow together. Tends to accumulate. When soil and sand accumulate, grass grows and drainage function declines. According to the present embodiment, when the amount of rain (about 20 mm / h or less) is drained by the first flowing water section 110, a sufficient flow rate can be secured, and heavy rain falls (about 20 mm / h to 60 mm / h). In the case of the second flowing water part 120 and further heavy rain (approximately 60 mm / h or more), the third flowing water part 130 is also automatically drained to cope with heavy rain. However, sedimentation can be prevented even in light rain.

In this embodiment, the length of the drainage groove in the longitudinal direction is 1.2 m, the depth of the receiving surface portion is 150 mm, the depth of the upper surface portion is 200 mm, and the height from the bottom bottom side of the flowing water plate to the rising edge on the front side. Is 70 mm, the thickness of each steel plate is 5 mm, the height from the upper side of the bottom surface of the flowing water plate 20 to the lower end of the rib plate 30 is 60 mm, the height of the first partition plate 21 is 35 mm, and the height of the second partition plate 22 The length is 40 mm. Since the height from the lower surface of the reinforcing angle 73 welded to the lower portion of the receiving surface portion 13 of the guard plate 10 to the upper surface of the bottom surface portion 24 of the flowing water plate 20 is 50 mm, there is a clearance of 15 mm at the upper portion of the first partition plate. . The water collection width of the first water flow part 110 is 150 mm, and the water collection widths of the second water flow part 120 and the third water flow part 130 are both 100 mm. The drainage flow rate calculated by adding a safety factor to these is 0.004 m ³ / s in the case of only the first flowing water part 110, and the first flowing water part 110 and the second flowing water part 120 are combined. In this case, 0.010 m ³ / s, and when the first flowing water part 110, the second flowing water part 120, and the third flowing water part 130 are combined, it becomes 0.03 m ³ / s. On a 50m long road, the runoff flow rate when the rainfall is 20mm / h is 0.003m ³ / s, the runoff flow rate when the rainfall is 50mm / h is 0.006m ³ / s, and the rainfall is 110mm / h. Since the outflow flow rate is calculated as 0.0138 m ³ / s, the flow rate calculated by adding the safety factor and the like from the drainage flow rate is 0.595 m / s when the rainfall is 20 mm / h, and the rainfall is 50 mm / h. Is 0.774 m / s, and when the rainfall is 110 mm / h, it is 0.622 m / s. Therefore, according to the present embodiment, the water flow cross-sectional area can be automatically changed according to the rainfall, so that it is possible to prevent the flow velocity from becoming too large or too small.

  The number of partition plates is not limited to two, but may be three or more, but is preferably two because the drainage space is narrow. Even if the second partition plate is lower than the first partition plate, two-stage adjustment is possible depending on the amount of water that has flowed in. In this embodiment, the second partition plate is more than the first partition plate. Is more preferable because it can be adjusted in three stages. When the number of partition plates is three or more, it is preferable to provide the partition plates closer to the back surface portion 25 so as to be higher.

In this embodiment, since the flowing water plate 20 is buried in the soil, a steel material used in a severe corrosive environment of type 2 55 (symbol HDZ55) of JIS H8641 is applied to the JIS standard. However, even if there is no thickness of 6 mm, even if it is 5 mm thick after adjusting the components, 550 g / m ² of zinc, which is an amount that does not normally adhere unless it is 6 mm thick, can be attached to the steel sheet. The weight can be reduced while maintaining the corrosion resistance. Further, by using a hot dip zinc-aluminum-magnesium alloy plated steel plate having higher resistance than HDZ55, it is possible to maintain corrosion resistance even if it is as thin as 3.2 mm.

{effect}
According to this embodiment, if the amount of water entering from the water flow hole is small, the range of automatically flowing the drainage is narrowed without adjustment, and if there is a large amount of water entering from the water flow hole, there is no need to adjust. Since the range in which drainage flows automatically can be widened, sediment and the like are less likely to accumulate. Therefore, according to the present embodiment, it is possible to make it difficult for the drainage function to be lowered without maintenance. Furthermore, since the second partition plate is higher than the first partition plate in the present embodiment, the width of the flow path according to the amount of water entering from the water flow hole can be adjusted in three stages.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. In addition, the constituent elements of the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Drain groove unit 10 Guard plate 11 Upper surface part 12 Front surface part 13 Reception surface part 14 Flow hole 20 Flow hole plate 21 First partition plate 22 Second partition plate 23 Standing part 24 Bottom part 25 Back part 30 a, b, c Rib Plate 31 Scallop 40 a, b, c, d Connecting plate 50 a, b Connection plate 60 a, b, c Reinforcing plate 71 Front receiving angle 72 Back receiving angle 73 Reinforcing angle 80 a, b Chain 90 a, b, c, d, e, f, g Anchor pipe 110 First flowing part 120 Second flowing part 130 Third flowing part

Claims (2)

(A) A flowing water plate having a bottom surface portion for flowing drainage, a rising portion that rises from the bottom surface end portion and becomes a front wall, and a back surface portion that rises from the bottom surface end portion opposite to the rising portion;
(B) a guard plate that is placed on the flowing water plate and is detachably provided as a lid, and has a flowing water hole;
Have
A drainage groove characterized in that a plurality of partition plates project in parallel with the drainage flow path on the upper surface side of the bottom surface portion of the water flow plate, and a gap is provided between the guard plate and the tip of the partition plate. unit. The drainage groove unit according to claim 1, wherein a height of the plurality of partition plates is higher for a partition plate on a back side of the flowing water plate.

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