JP4315843B2 - Drainage device for road structures - Google Patents

Description

  The present invention relates to a drainage device such as rainwater flowing through the top of a floor slab of a road structure.

  In general, a drainage basin as a drainage device installed in a road structure is formed from a main body 1, a lid 2, and a drainage pipe 3, as shown in FIG. Thus, a small hole 1e for drainage is formed in the wall 1a of the main body 1, and a water collecting hole 2a is formed in the lid 2.

  Moreover, the road structure is usually provided with a waterproof sheet 12 on a floor slab 11 as shown in FIG. 12, and a base layer 13 and a surface layer 14 are laid thereon. 1c is a mouthpiece.

  In the case of road structures with permeable pavement, if the capacity of the drainage basin is not sufficient, rainwater flowing on the floor slab will stay on the floor slab or overflow on the road surface during heavy rain. .

  As a result, there are obstacles to traffic, pavement damage, and negative effects on floor slabs. In winter, the water staying in the vicinity of the expansion joint freezes, causing an accident.

  As measures for draining these waters, usually, a dedicated permeable pipe or drainage pipe is placed along the expansion joint or ground cover and connected to the drainage basin. In some cases, the effect is diminished.

  Moreover, in the steel drainage groove unit which served as the curb and the drainage groove as seen in Patent Document 1, a water introduction hole is opened at the position of the pavement layer on the road side of the waterway part, and the water supply pipe is connected to the floor. A drainage method is also proposed by guiding the plate permeation through the conduit to the end pipe, but this is a steel curb and drainage structure, and in drainage systems that do not use this , Can not be used.

  Therefore, first, a drainage guide piece protruding outward along the lower wall of the main body as seen in Patent Document 2 is formed, and the drainage guide piece is formed on the wall body from the edge of the drainage guide piece. A drainage device for road structures consisting of a drainage basin with a drainage window extending upward was proposed.

  Although this drainage device can find an excellent effect on drainage capacity, there is still one that is not satisfactory.

  One is that when the drainage basin is used, when the drainage guide piece is installed flush with the floor slab surface, the upper end is not necessarily the surface of the pavement layer due to the thickness of the predetermined pavement layer. It may happen that the upper end of the drainage basin is not flush.

The other problem is that even if drainage water flowing through the floor slab through the pavement is not properly conducted to the drainage basin, even if it is a drainage device having a high drainage capacity, the ability is not fully exhibited.
Japanese Examined Patent Publication No. 6-37762 Japanese Patent Application 2003-337925

  The present invention solves the problem that when such a pavement layer is laid to a predetermined thickness, the upper end of the drainage basin is not necessarily flush with the surface of the pavement layer, and provides a drainage device having a high drainage capacity. To do.

In order to solve the above problems, the present invention provides the following means.

In order to solve the first problem, when the upper collar part is placed on the lower collar part and the upper collar part having a plurality of drainage windows opened from the lower part to the upper part of the wall part, the outer side of the wall part of the upper collar part The lower drainage guiding piece of the lower collar projecting to the upper part of the wall and the lower collar formed with the height adjustment spacer of the upper collar is formed, and the upper collar is formed on the lower collar There is provided a drainage device for a road structure including a drainage basin formed by placing an upper collar part on a height adjusting spacer.

Specifically, when the upper collar part is opened on the lower collar part from the lower part of the wall part to the upper part of the wall part, the drainage of the lower collar part that protrudes outside the wall part of the upper collar part. The guide piece is formed by projecting outward from the upper part of the wall part and the lower collar part formed with the height adjustment spacer of the upper collar part. The upper collar part is placed on the height adjustment spacer of the lower collar part and the upper collar part. A drainage device for a road structure is provided from a drainage basin formed by fitting the lower part of the wall part into the upper part of the lower part of the wall part.

In addition, in detail, an upper collar portion that opens a plurality of drainage windows from the lower part to the upper part of the wall part, and a lower collar that protrudes outside the wall part of the upper collar part when the upper collar part is placed on the lower collar part. The drainage guide piece of the upper part is formed to protrude outwardly from the upper part of the wall and the height adjustment spacer of the upper collar part is formed , and the upper collar part is drained when the upper collar part is placed on the height adjustment spacer. The upper collar part and the lower collar part are placed on the height adjustment spacer of the lower collar part, and the upper collar part and the lower collar part are placed on the height adjustment spacer of the lower collar part. Provided is a drainage device for a road structure including a drainage basin in which a wall portion between windows of a heel portion is located inside a movement stopper of a lower heel portion.

To solve the above other problem, as well as laying drainage mat along Jibuku and / or expansion joints in the waterproof sheet and pavement layers were laid on the floor plate upper surface, according to claim 1, claim 2 or claim A drainage device for a road structure is provided in which the drainage basin described in 3 is installed on the floor slab so that the drainage guide piece is substantially flush with the upper surface of the floor slab .

  Since the present invention is configured as described above, it has the following effects.

In Claim 1 thru | or 4, When the upper collar part is mounted in the wall part outer side of a lower collar part, since the drainage guide piece which protrudes on the wall surface outer side of an upper collar part is formed, installation of a drainage basket In this case, since this drainage guide piece can be installed flush with the floor slab, the rainwater flowing on the floor slab through the permeable pavement layer is formed on the upper heel part through the drainage guide piece. It drains from the gap between the heel and lower heel.

  Similarly, in claims 1 to 4, the upper collar part and the lower collar part are formed separately, and the upper collar part is placed on the height adjustment spacer formed on the lower collar part. By adjusting the height, it becomes possible to adjust the height of the upper collar part, so that it is possible to cope with different pavement layer thicknesses.

  In Claim 2, since the upper collar part and the lower collar part are integrated by fitting the lower part of the wall part of the upper collar part above the wall part of the lower collar part, the deviation from the lower collar part of the upper collar part Can be prevented.

  In Claim 3, since the wall part of the upper collar part is located inside the movement stopper formed in the drainage guide piece formed in the lower collar part, the deviation from the lower collar part of the upper collar part is the same as in Claim 2. Can be prevented. Moreover, since the movement stopper is located at a position corresponding to the inter-window wall of the upper collar, it does not block the drainage window.

In Claim 4 , since the drainage mat was laid along the ground cover and / or the expansion joint between the waterproof sheet laid on the floor slab surface and the pavement layer, running water by the drainage mat in a state where a part of the pavement layer was cut out The rainwater or the like flowing into the drainage mat is introduced into the drainage channel in the same state as when the channel was formed.

  The best mode for carrying out the present invention will be described with reference to the following drawings.

  1 is an exploded perspective view showing a state in which a drainage device for a road structure is installed on a floor slab, FIG. 2 is a plan view of the drainage device, and FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a side view.

  This drainage device is a steel drainage basin composed of a main body 1, a lid 2 and a drainage pipe 3.

  The main body 1 is composed of an upper collar part 5 and a lower collar part 6, and the upper collar part 5 and the lower collar part 6 have their wall parts 5a and 6a in close contact with the inner surface of the wall part 6a. Thus, the wall portion 5a and the wall portion 6a are fitted to each other so that they can be fitted.

  The upper eaves part 5 is formed by forming a drainage window 5b having an arc shape with a convex shape in the upper part of the wall part 5a. The drainage window 5b has a large opening in order to prepare for a large flow rate, and has an arcuate shape on the upper side to cope with the load. In this embodiment, since the one wall portion 5a is located on the side of the road, the drainage window 5b is not opened, and protruding walls 5d are formed on both sides as necessary. The protruding wall 5d has a function of preventing side leakage of rainwater or the like on the floor slab. When installing in the center part of the floor slab, the drainage window 5a is opened also in one wall part 5a. The receiving part of the lid 2 formed at the upper end of the upper collar part 5 is the same as a known receiving part, but the back side serves as a receiving part for a height adjustment spacer of the upper collar part 5 described later. .

  The lower collar portion 6 protrudes outward from the upper end of the wall portion 6a so that the drainage guiding piece 4 is integrally formed, and an inner screw is formed across the thickness of the drainage guiding piece 4 and the wall portion 6a to adjust the height. Bolts as the spacer 7 are screwed together. In this embodiment, since one wall 6a is located on the side of the road, the drainage guide piece 4 is not formed. When installed in the central part, the drainage guide piece 4 is also formed on one wall 6a. A drop port 6b is formed below the lower collar portion 6, and the drain pipe 3 is integrally connected.

  The upper eaves part 5 and the lower eaves part 6 thus formed are installed on the floor slab as shown in FIG.

  The structure of this bridge is that the floor slab 11 is an RC floor slab, with a waterproof sheet 12 on the floor slab 11, a base layer 13 on the waterproof sheet 12, and a surface layer 14 comprising a water permeable layer on the base layer 13. Is formed.

In this embodiment, first, the drain guide piece 4 formed by projecting the lower eaves portion 6 from the upper end of the wall portion 6a on the floor slab 11 is installed so as to be substantially flush with the upper surface of the floor slab 11, and the upper eaves The lower flange portion 6 is fitted with the wall portion 5a of the upper collar portion 5 inside the wall portion 6a of the lower collar portion 6 and the receiving portion of the lid 2 of the upper collar portion 5 is formed on the lower collar portion 6. Place on the height adjustment spacer 7 . Next, the height of the upper collar portion 5 is adjusted by the height adjusting spacer 7 in consideration of the pavement layer thickness. The height adjustment may be performed before placing the upper collar part 5 on the lower collar part 6. Thereafter, the pavement layer is laid in the order of the base layer 13 and the surface layer 14. The lid 2 may be placed on the upper collar 5 either before or after the pavement layer is laid.

  FIG. 5 is an exploded perspective view showing a drainage device for a road structure according to another embodiment, and FIG. 6 is a cross-sectional view of the drainage device.

  This drainage device is composed of a main body 1, a lid 2, and a drain pipe 3, as in the previous embodiment, and the main body 1 is a drainage basin composed of an upper collar part 5 and a lower collar part 6.

  The upper eaves part 5 is formed by forming a drainage window 5b in the wall part 5a, which has a long hole that is at least half the height of the wall part 5a and has an arcuate shape that protrudes upward. The drainage window 5b has a large opening in order to prepare for a large flow rate, and has an arcuate upper portion to cope with the load. In this embodiment, since one wall portion 5a is located on the side of the road, no drainage guide piece is formed, and the drainage window 5b is not opened, and protruding walls 5c are formed on both sides as necessary. Become. The protruding wall 5c has a function of preventing side leakage of rainwater or the like on the floor slab. When installing in the center part of the floor slab, the drainage window 5b is also opened in one wall body 5a.

  The lower collar portion 6 protrudes outward at the upper end of the wall portion 6a so that the drainage guiding piece 4 is integrally formed, and an inner screw is formed over the thickness of the drainage guiding piece 4 and the wall portion 6a. As a bolt. In the drainage guide piece 4, the upper collar 5 is located at the position of the drainage window wall 5 e of the upper collar 5 when the lower end of the wall 5 a of the upper collar 5 is placed on the height adjustment spacer 7. The movement stopper 8 of the part is attached by the plate. In this embodiment, since one wall 6a is located on the side of the road, the drainage guide piece 4 is not formed. When installing in the central part, the drainage guiding piece 4 is also formed on one wall 6 a, and the movement stopper 8 is attached to the draining guiding piece 4.

  The upper eaves part 5 and the lower eaves part 6 thus formed are installed on the floor slab as shown in FIG.

  In this bridge structure, the floor slab 11 is an RC floor slab, and a waterproof sheet 12 is formed on the floor slab 11, a base layer 13 is formed on the waterproof sheet 12, and a surface layer 14 made of a water permeable layer is formed on the base layer 13. Has been.

In this embodiment, first the drainage guide strip 4 which is formed to project the lower桝部6 to the upper end outside of the wall portion 6a on the floor plate 11 is placed so as to be substantially flush with the floor plate 11 upper surface, the upper桝部5 is a lower collar part 6 and the wall part 5 a of the upper collar part 5 is inside a moving stopper 8 attached to the drainage guiding piece 4 of the lower collar part 6. The upper flange portion 5 is placed so that the lower end portion of the wall portion 5a is positioned on the height adjusting spacer 7. Next, the height of the upper collar portion 5 is adjusted by the height adjusting spacer 7 in consideration of the pavement thickness. The height adjustment may be performed before placing the upper collar part 5 on the lower collar part 6. Then, the pavement layer is laid in the order of the base layer and the surface layer. The lid 2 may be placed on the upper collar 5 either before or after the pavement layer is laid.

  FIG. 7 is a perspective view from the road surface side illustrating the drainage basin described above and a drainage device in which the drainage mat that guides the drainage basin is laid, and FIG. 8 is a bridge showing the laying state of the drainage mat in the general part along the ground cover. 9 is a partial cross-sectional view in the axial direction, FIG. 9 is a partial cross-sectional view in the axial direction of the bridge showing the laying state of the drainage mat on the side surface of the drainage basin shown in Example 1 or Example 2, and FIG. FIG. 11 is a partial cross-sectional view in the direction perpendicular to the bridge axis showing the laying state of the drainage mat of the expansion joint portion.

  The floor slab 11 is an RC floor slab. The floor slab 11 and 11 are opposed to each other across the gap 11b. An expansion joint 15 is provided at an end back portion 15a, and a drainage basin having a floor slab drainage function along the end cover. 16 is installed.

  As shown in FIGS. 8 to 11, a waterproof sheet 12 is laid on the upper surface of the floor slab 11, and a drainage mat is formed on the waterproof sheet 12 along both sides of the ground cover 11 a of the floor slab 11 and the expansion joint 15. 17 is laid corresponding to the base layer thickness of the pavement layer. The drain mat 17 may be fixed with an adhesive or the like. The drain mat 17 is laid straight along the general portion of the ground cover 11a, and without being directly along the ground cover portion 11a at the place where the drainage basin 16 is installed along the end ground cover of the floor slab 11. The drainage basin 16 is laid so as to surround the front and side surfaces.

  The drainage mat is preferably a loofah-like structure in which thermoplastic monofilaments are crimped as shown in FIG. Some of these monofilaments are made of polyester, polyethylene, polypropylene or the like. Of these, polyesters having a relatively high softening point and melting point are particularly preferable in consideration of pressure resistance and heat resistance during asphalt laying.

  The loofah-like structure can be adjusted to a predetermined density according to the drainage function by adjusting the density of the monofilaments that are formed. Further, a filter 17a is attached to the outer peripheral surface of the loofah-like structure to prevent the inflow of asphalt. It is in the form of mesh or punching. The material does not specify plastics, fibers, metals, etc.

  In the present invention, a polyester fiber mesh having a mesh size of 1 mm was used.

  After the drainage mat 17 is laid, it is paved with asphalt or the like. Pavement is performed by laying the base layer 13 on the waterproof sheet 12 except for the place where the drain mat 17 is laid, and then laying the surface layer on the base layer 13 and the drain mat 17 after the base layer 13 is laid.

By comprising in this way, the rain water etc. which flow on a floor slab move to the arrow direction, as shown in FIG. 7 , and flow into a drain mat. The drainage mat is located in the groove formed by cutting out the pavement layer, and at the same time, it becomes a water channel and conducts rainwater etc. to a drainage basin with a floor slab drainage function installed at the end of the floor slab. Since the drain mat can be laid wide on the flat surface of the waterproof sheet, a large flow rate can be received.

Note that the rainwater or the like on the floor slab flows in the direction of the arrow shown in FIG. 7 because the floor slab is usually formed with a longitudinal gradient and / or a transverse gradient.

  Since the present invention is configured as described above, it has the effects described above.

It is the disassembled perspective view which notched and showed the state which installed the drainage apparatus of the road structure concerning the Example of this invention in the floor slab. It is a top view of a drainage device. It is AA sectional drawing of FIG. It is a side view of a drainage device. It is the disassembled perspective view which notched and showed the state which installed the drainage apparatus of the road structure which concerns on another Example of this invention in the floor slab. It is sectional drawing of a drainage device. It is a perspective view from the road surface side of a bridge which shows an embodiment of a drainage device which laid a drainage basin and a drainage mat of the present invention. It is a bridge-axis direction fragmentary sectional view which shows the laying state of the drain mat of the general part along the ground cover in FIG. FIG. 8 is a partial cross-sectional view in the bridge axis direction showing a laying state of the drainage mat on the side surface of the drainage basin in FIG. 7. FIG. 8 is a partial cross-sectional view in the bridge axis direction showing a laying state of a drainage mat in the front portion of the drainage basin in FIG. 7. FIG. 8 is a partial cross-sectional view in the direction perpendicular to the bridge axis showing a state in which a drainage mat of the expansion joint portion of FIG. 7 is laid. It is sectional drawing of a drainage mat. It is a disassembled perspective view which shows the prior art example of a drain.

DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Drain pipe 4 Drainage guide piece 5 Upper collar part 5a Wall part 5b Discharge window 5c Projection wall 5d Projection wall 5e Inter-window wall part 6 Lower collar part 6a Wall part 6b Drop opening 7 Height adjustment spacer 8 Movement stopper DESCRIPTION OF SYMBOLS 11 Floor slab 11a Ground cover 12 Waterproof sheet 13 Base layer 14 Surface layer 15 Expansion joint 15a Expansion joint back part 16 Drainage basin 17 Drainage mat 17a Filter

Claims (4)

When the upper collar part is placed on the lower collar part and the lower collar part drainage guide piece projecting to the outside of the upper collar part when the upper collar part is placed on the lower collar part consists of a lower桝部forming a height adjustment spacers above桝部while protrudes to the wall above the outer, placed on桝部on桝部 the height adjustment spacers formed under桝部A drainage device for a road structure characterized by comprising a drainage tank. When the upper collar part is placed on the lower collar part and the lower collar part drainage guide piece projecting to the outside of the upper collar part when the upper collar part is placed on the lower collar part The upper collar is formed by projecting outward from the upper wall and having a height adjustment spacer for the upper collar. The upper collar is placed on the height adjustment spacer of the lower collar and the wall of the upper collar A drainage device for a road structure comprising a drainage basin formed by fitting the lower part of the lower part to the upper inner side of the wall part of the lower collar part. When the upper collar part is placed on the lower collar part and the lower collar part drainage guide piece projecting to the outside of the upper collar part when the upper collar part is placed on the lower collar part forming a height adjustment spacers above桝部while protrudes to the wall above the outer, and the position of the drainage window between the walls of the upper桝部when upper桝部is placed on the height-adjusting spacer The upper collar part and the lower collar part are placed on the height adjustment spacer of the lower collar part, and the window wall of the upper collar part is formed. A drainage device for a road structure, characterized in that the portion is made of a drainage basin inside the moving stopper of the lower heel part. A drainage mat is laid along the ground cover and / or expansion joint between the tarpaulin laid on the upper surface of the floor slab and the paving layer, and the drainage basin according to claim 1, 2 or 3 is applied to the floor slab. A drainage device for a road structure, characterized in that the drainage guide piece is installed so as to be substantially flush with the upper surface of the floor slab .

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