JP2019052471A - Drain ditch - Google Patents

Abstract

To block percolating rain water during an earthquake or from the boundary between a concrete portion of a balustrade and a drain ditch, to be used for a steel drain ditch provided along a road shoulder, part of which is embedded in a concrete ground cover or a wall balustrade.SOLUTION: A drain ditch 1 comprises a drainage frame 2 and a cover 3. A support fitting 3c which constitutes the cover 3 together with a cover main body 3d is embedded in a ground cover 8 together with part of the drain ditch 1. Atop the support fitting 3c is a rising part 3a connected and fixed to a side wall 2c which constitutes the drainage frame 2. The rising part 3a has a function to block rainwater infiltrating from between the support fitting 3c and the ground cover 8 while demonstrating an anchor function.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a drainage ditch installed along a shoulder cover or a wall rail of a bridge, a road or the like (hereinafter simply referred to as a road).

  In many roads, drainage channels and drainage basins are installed along the shoulders as drainage channels, and rainwater that falls on the road flows into the drainage channels and drainage basins and is discharged. One of the drainage grooves of this type is a drainage groove having a concave drainage frame and a cover covering the drainage frame, and a part of the drainage groove is embedded in a concrete ground cover (patent) Reference 1).

  There are two ways to increase the water flow area of the drainage channel: widening the width of the drainage channel, deepening the depth, or a combination of both methods, but increasing the groove width increases the area exposed on the road surface. In particular, when the cover covering the drainage groove is made of metal, an accident in which an automobile, particularly a motorcycle or a bicycle slips and falls is likely to occur. Deepening the drainage ditch also increases the amount of excavation on the ground and increases construction costs.

  In this regard, as described in Patent Document 1, in the drainage groove partially embedded in the ground cover, the water flow area can be increased without increasing the area exposed on the road surface and without increasing the depth. Is possible.

JP 2006-225945 A

  The present invention can increase the water flow area without increasing the exposed area on the road surface and without increasing the depth by embedding a part of the drainage groove in the concrete ground cover or wall rail. However, one problem in this case is that rainwater penetrates from the boundary between the concrete part of the ground cover and wall rail and the drainage ditch, and the steel bars and steel bars in the ground cover and wall rail are made of steel. The part covered with concrete in the drainage channel is likely to corrode.

  The present invention was made to solve this problem, and drainage grooves that block rainwater penetrating from the boundary between an earthquake and a railing to a railing and a drainage groove so that the rainwater does not penetrate further. The purpose is to provide.

  The invention according to claim 1 is a steel drainage groove which is installed along a shoulder of a road or the like, and a part of which is buried in a concrete ground cover or a wall rail, and the ground cover or wall of the drainage groove. The place buried in the railing is provided with a water-impervious portion that protrudes upward from the boundary between the ground cover or the concrete portion of the wall rail and the drainage groove, and projects upward.

According to a second aspect of the present invention, in the first aspect of the present invention, in order to allow rainwater blocked by the water blocking portion to flow out into the drainage ditch at a place buried in the ground cover or wall rail of the drainage ditch. Characterized by the formation of an outflow hole,
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the drainage groove is made of steel, the bottom wall, the drainage channel 4 having a concave cross section composed of side walls on both sides of the bottom wall, and the drainage channel on the drainage channel. The cover is formed of a cover that can be removed at least partially, and the water shielding portion is formed integrally with the side wall on an extension of the side wall constituting the drainage channel.

  According to the invention of claim 1, even if rainwater permeates from the boundary portion between the ground cover or the concrete section receptacle of the wall rail and the drainage groove, it is blocked by the water blocking portion, and the ground cover or wall is further exceeded Can prevent penetration between rails.

  According to the invention which concerns on Claim 2, the rainwater blocked | interrupted by the water-blocking part comes to be discharged | emitted in a drainage channel from an outflow hole, without collecting in a ground cover or a wall rail.

  According to the invention which concerns on Claim 3, a water-impervious part can be formed simultaneously at the time of drainage channel manufacture, without requiring another process.

The top view of a drain ditch. The front view. FIG. Sectional drawing which shows the example of construction to the ground cover of a drain ditch. The expanded sectional view of the principal part of FIG. The expanded sectional view of the principal part of another aspect of FIG. Furthermore, the expanded sectional view of the principal part which shows another aspect. Sectional drawing of the principal part which shows the construction example to the wall rail of a drain ditch. Sectional drawing of the principal part which shows another aspect of FIG. Furthermore, sectional drawing of the principal part which shows another aspect. Sectional drawing of the principal part which shows another aspect of FIG.

Hereinafter, an embodiment of a drain ditch according to the present invention will be described with reference to the drawings.
1 is a plan view of a drainage groove generally indicated by reference numeral 1, FIG. 2 is a front view, FIG. 3 is a cross-sectional view, and the drainage groove 1 is a drainage frame 2 as a drainage channel having a concave cross section, and the drainage As shown in FIGS. 1 to 3, the drainage frame 2 has a bottom wall 2a, side walls 2b and 2c rising from both ends of the bottom wall 2a, and a constant interval on the bottom wall. It consists of two rows of columns 2d projecting upward. Among the side walls 2b and 2c, a plurality of anchors 2e projecting outward are fixed to the side wall 2b on the road side having a low height. The receiving material 2f projecting inward is fixed on both sides of the anchor 2e.

  A side wall 2c projecting opposite to the side wall 2b on the opposite side of the side wall 2b is taller than the side wall 2b, and has a flange-shaped rising portion 3a and a vertical portion 3b formed to protrude upward and downward at both ends. A plurality of locations along the longitudinal direction of the side wall with bolts 4 and nuts 5 with the rising portion 3a of the provided horizontal support fitting 3c being applied to the inner side surface of the upper portion of the side wall 2c and the upper end of the rising portion being aligned with the upper end of the side wall It is fixed at an appropriate interval. A central portion is provided outside the side wall 2c, and anchors 6 are provided on both sides thereof so as to protrude outward. The rising portion 3a may be attached by welding instead of being fixed to the upper portion of the side wall 2c by using the bolt 4 and the nut 5.

  As shown in FIG. 3, a cover main body 3d that constitutes the cover 3 of the drainage frame 2 together with the support fitting 3c is placed on the support column 2d in an inverted L shape and protrudes downward from one end on the side wall 2b side. The formed vertical portion 3e has a recess 3f that is fitted to the receiving material 2f from above, and the lower end of the vertical portion 3e is attached to the bottom wall 2a in a state where the receiving material 2f is fitted to the recess 3f. The floor can be used.

  The cover 3 configured as described above has a support fitting 3c constituting a part thereof fixed to the upper side of the side wall 2c of the drainage frame 2 with bolts 4 and nuts 5, but is placed on the support column 2d. The cover main body 3d can be easily removed by lifting the recess 3f away from the receiving material 2f.

  The cover body 3d, which is placed on each of the columns 2d and is horizontally supported with the lower end of the vertical portion 3e placed on the bottom wall 2a, has one end on the side of the side wall 2c abutted against the vertical portion 3b of the support fitting 3c. (FIG. 3).

  At the place where the cover main body 3d and the vertical portion 3b of the support metal fitting 3c abut, a plurality of water passage holes 3g extend across both sides of the cover main body 3d and the vertical portion 3b of the support metal fitting 3c at right angles. Each place is formed.

  Reference numeral 7 shown in FIGS. 1 and 2 is a connection fitting to be attached to the support fitting 3c. When the drainage groove 1 is continuously provided in a straight line along the road longitudinal direction on the road shoulder, the adjacent drainage groove 1 is shown. The drainage groove is connected to the support bracket 3c so that the drainage groove can be connected without any step.

The drain groove 1 of this embodiment is comprised as mentioned above, and the construction is performed as follows.
As shown in FIG. 4 and FIG. 5 which is an enlarged view of the main part thereof, after the drainage groove 1 is positioned and installed at a predetermined position on the concrete floor slab 7, a mold (not shown) is used to form a ground cover. It is applied from the side surface of the vertical portion 3b of 3c and installed on the cover main body 3d, and is applied to the side end surface of the concrete floor slab 8. Thereafter, concrete is placed in both molds to a predetermined height to form a ground cover 9 that rises flush with the vertical portion 3b of the support fitting 3c, whereby the drainage groove 1 including the support fitting 3c. Is partially embedded in the ground cover 9. The sealing material 11 shown in FIG. 4 is filled and sealed between the support fitting 3c and the ground cover 9 after the ground cover is formed.

  Before and after the formation of the ground cover 8, asphalt is loaded on the concrete slab 8 up to the side wall 2b to form a pavement layer 12. The surface of the pavement layer 12 has a slope that gently slopes toward the side wall 2b, and rainwater that has poured onto the road surface flush with the upper end of the side wall reaches the drain groove 1, It passes through the drainage frame 2 and drains.

  If the sealing material 11 falls off over a long period of time, or if rainwater enters from between the sealing material 11 and the concrete ground cover 9 until it does not fall off, the rainwater that has entered in the direction of the arrow in FIG. It is blocked by the rising portion 3a of the support fitting 3c, and no further water is immersed in the ground cover. Therefore, in this embodiment, the rising part 3a becomes a water shielding part.

  The rising portion 3a attached to the side wall 2e not only functions as a water-blocking portion 3a but also functions as an anchor together with the anchor 6 in the ground, so that the rising height of the rising portion 3a is sufficiently secured. If the anchor function can be sufficiently achieved only by the rising portion, the anchor 6 can be omitted.

  FIG. 6 shows an embodiment in which the outflow hole 14 is provided at the end of the support fitting close to the rising portion 3a. Rainwater that has entered the support fitting does not collect on the support fitting, and the inside of the drainage frame 2 passes through the outflow hole 14. It is supposed to be discharged.

  In the embodiment shown in FIG. 7 corresponding to the embodiment shown in FIGS. 5 and 6, the support fitting 3c has the vertical portion 3b. Absent. As a result, the support metal fitting 3c having a level difference with the cover main body 3d is formed with a lateral water passage hole 16 between the cover main body 3d, and the rainwater flowing into the cover main body 3d passes through the water flow hole 16 and smoothly drains the drainage frame. 2 is drained.

  In the embodiment shown in FIG. 7, the bolt 17 is formed longer than the bolt 4, and the rising portion 3g of the support fitting 3c attached to the side wall 2c is formed higher than the rising portion 3a. In order to provide a stable anchor effect, the anchor 6 of the above embodiment is omitted.

  In the above-described embodiment, the rising portion 3a is a water shielding portion. However, a water shielding portion that protrudes upward may be provided at an arbitrary position of the support fitting 3c, but a flange is used to fix the support fitting 3c to the side wall 2c. The shape of the raised portion 3a is necessary, and it is not preferable to provide a water shielding portion other than the raised portion 3a because the structure is complicated. In any case, the water-impervious portion is not limited to the one that rises vertically, and may protrude obliquely upward, and the thickness may not be constant.

  The above embodiment also shows an example in which a part of the drainage groove 1 is embedded in the ground cover 9, but the embodiment shown in FIGS. An example in which 18 is embedded is shown.

  FIG. 8 shows an example in which a wall rail 18 is constructed using a drainage groove 1 having a support fitting 3c having a vertical portion 3b as shown in FIG. 5, and FIG. 9 shows an outflow hole 14 formed as shown in FIG. An example in which the wall rail 18 is constructed using the drainage groove 1 having the support fitting 3c, FIG. 10 is a construction example of the drainage groove on the wall elevation 18 using the same support fitting as the support fitting 3c shown in FIG. FIG. 7 shows an example of construction on the wall height column 18 using the support fitting 3c shown in FIG. 7, and portions denoted by the same reference numerals as those in the embodiment have the same structure.

1. Drain groove 2. Drainage frame 2b, 2c, side wall 2d, support 3, cover 3a, rising part 3c, support bracket 3d, cover body 3g, water hole 6, anchor 8・ ・ Concrete floor slab 9 ・ Ground cover 11 ・ Sealing material 12 ・ Pavement layer 14 ・ Outflow hole 16 ・ Water flow hole 18 ・ Wall railing

Claims (3)

  A drainage ditch installed along the shoulder of a road, etc., partially buried in a concrete cover or wall rail, where the drain cover is buried in the ground cover or wall rail. Alternatively, a drainage ditch characterized by having a water-impervious part protruding upward from a boundary between the concrete portion of the wall rail and the drainage ditch.   The outflow hole for allowing the rainwater blocked by the water shielding portion to flow out into the drainage groove is formed at a place buried in the ground cover or wall rail of the drainage groove. Drains.   The drainage groove is made of steel, and includes a bottom wall, a drainage channel 4 having a concave cross section made of side walls on both sides of the bottom wall, and a cover that covers the drainage channel and is at least partially removable. The drainage groove according to claim 1 or 2, wherein the drainage groove is formed integrally with the side wall on an extension of the side wall constituting the drainage channel.