JP2013113010A - Connecting fitting for u-shaped groove and pipe, and vertical drainage method for slope using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting fitting for a U-shaped gutter and piping, which enables the U-shaped gutter and the piping to be connected together by a simple method, and which eliminates the risk of causing water leakage in a connection part.SOLUTION: A connecting fitting 1 for connecting an end of a corrugated pipe, having a spiral protrusive streak provided on an outer peripheral surface, to an end of a U-shaped groove buried in an earth surface includes: a connecting cylinder part 11 which has an inner peripheral surface provided with a female screw part 111 screwed to the protrusive streak of the corrugated pipe; a partition plate 12 which screens a gap between a periphery of the connecting cylinder part 11 and the end of the U-shaped groove; and a fixing flange part 13 for fixing the partition plate 12 to the end of the U-shaped groove. The inside of the connecting cylinder part 11 passes through the front and back sides with the partition plate 12 in between.

Description

  The present invention relates to a connection fitting between a U-shaped groove and a pipe and a vertical drainage method of a slope using the same. Specifically, the U-shaped groove and a pipe can be connected by a simple method, and The present invention relates to a fitting between a U-shaped groove and a pipe that is unlikely to cause water leakage, and a vertical drainage method for a slope using the fitting.

  In Japan, 3/4 of the country is mountainous, and the development of mountainous and hilly areas is progressing with the enhancement and development of social infrastructure. For this reason, roads, residential areas, etc. tend to be adjacent to steep slopes, and in recent years there has been more heavy rain than expected, and there is a social environment where landslides such as landslides are likely to occur.

  Natural phenomena such as rainfall and melting snow are most related to landslides, and drainage works are available as countermeasures against landslides. A drainer constructs a vertical drainage channel that cuts the slope in order to prevent rainwater that has poured onto the ground surface from penetrating underground (Patent Document 1). This vertical drainage channel is usually formed by laying U-shaped grooves on the soil surface.

  By the way, as shown in FIG. 11, there is a case where a retaining fence 100 is provided on the slope as a countermeasure against earth and sand on a steep slope. 101 is a retaining fence main body made of a fence or the like, and 102 is H steel that is driven into the soil to support the retaining fence main body 101. By providing such a retaining fence 100, the slope is divided into an upper part and a lower part in the inclination direction, so that the vertical drainage channel is also U-shaped groove 201 on the upper side in the inclination direction and a U-shape on the lower side in the inclination direction. Divided into grooves 202.

  In this case, in order to connect the U-shaped grooves 201 and 202, hooks 301 and 302 such as connecting rods and water collecting rods are attached to the lower end of the U-shaped groove 201 and the upper end of the U-shaped groove 202, respectively. 302 is connected by disposing an L-shaped connection pipe 400 made of a vinyl chloride pipe or the like so as to be hidden under the retaining fence main body 101.

JP 2003-313875 A

  In the construction method using the hooks 301 and 302, each time the connection pipe 400 and the hooks 301 and 302 are cut by punching out the connecting portion with the connection pipe 400 at the site and placing using mortar, concrete, or the like. Although the connection is made, curing of mortar, concrete, etc. is required, and adhesion strength such as cracking due to secular change occurs, and it is easy to leak water at the connection part. It is an overall weakness.

  In cold regions such as Hokkaido, a phenomenon called frost heaving may occur in winter. Freezing is a phenomenon in which the ground rises irregularly locally due to expansion when moisture in the ground freezes. At this time, due to the difference in weight between the rods 301 and 302 and the connection pipe 400, unevenness is likely to occur at the connection portion between the rods 301 and 302 and the connection pipe 400. As a result, water leaks at the connection portion. There is a problem that occurs.

  In addition, since the working environment is high and steep, it is extremely difficult to carry heavy bags and carry out burial and connection work on site. Therefore, it is required to be able to form a reliable vertical drainage channel without water leakage by an extremely simple method.

  Therefore, the present invention has an object to provide a connection fitting between the U-shaped groove and the pipe that can connect the U-shaped groove and the pipe by a simple method and does not cause the leakage of water at the connecting portion. To do.

  Another object of the present invention is to provide a sloped vertical drainage method that can be easily constructed and that does not cause water leakage at the connecting portion.

  Other problems of the present invention will become apparent from the following description.

  The above problems are solved by the following inventions.

(Claim 1)
A connection fitting for connecting the end of a U-shaped groove embedded in the soil surface to the end of a corrugated tube having a spiral protrusion on the outer peripheral surface,
A connecting cylindrical part having an internal thread part screwed onto the protrusion of the corrugated tube on the inner peripheral surface;
A partition plate for shielding a gap between the periphery of the connecting cylindrical portion and the end of the U-shaped groove;
A fixing flange for fixing the partition plate to the end of the U-shaped groove;
A connection fitting between a U-shaped groove and a pipe, wherein the inside of the connection cylindrical portion penetrates the front and back sides with the partition plate in between.

(Claim 2)
2. The connection between the U-shaped groove and the tube according to claim 1, wherein the connecting cylindrical portion has a bolt screwing hole for fixing the corrugated tube screwed to the female screw portion with a tip of a bolt. Hardware.

(Claim 3)
The connecting cylindrical portion is provided so as to protrude only on one surface of the partition plate, and the fixing flange portion is provided on the other surface of the partition plate on the side opposite to the connecting cylindrical portion. And
The said partition plate has a communicating hole formed in the diameter smaller than the outer diameter of the said corrugated tube for penetrating the inside of the said connection cylindrical part to the front and back on both sides of this partition plate. Or the connection bracket of the U-shaped groove and pipe of 2 description.

(Claim 4)
The U-groove and pipe connecting bracket according to claim 1, 2 or 3, wherein the fixed flange portion has a plurality of bolt insertion holes for bolting to an end of the U-shaped groove.

(Claim 5)
A vertical drainage method for surface water that forms a vertical drainage channel along the slope of the slope with earth retaining by a retaining fence,
U-shaped grooves are embedded along the slope of the slope surface above and below the slope direction of the slope across the retaining fence, respectively.
The connection fitting of the U-shaped groove and the pipe according to any one of claims 1 to 4 is fixed to a lower end of the U-shaped groove above the slope surface and an upper end of the U-shaped groove below the slope direction, respectively. ,
An end portion of a corrugated tube having a spiral protrusion on the outer peripheral surface thereof is connected to the connection cylindrical portion of the connection fitting so that the female thread portion of the connection cylindrical portion and the protrusion of the corrugated tube are screwed together, respectively. By connecting, the U-shaped groove above the slope direction of the slope and the U-shaped groove below the slope direction are communicated by the corrugated pipe, and the corrugated pipe is embedded so as to straddle the bottom of the retaining fence. Longitudinal drainage method with slope

  ADVANTAGE OF THE INVENTION According to this invention, while being able to connect a U-shaped groove and piping by a simple method, the connection metal fitting of a U-shaped groove and piping which does not have a possibility of generating the water leak in a connection part can be provided.

  Moreover, according to this invention, while being able to construct easily, the vertical drainage method of the slope which does not have a possibility of generating the water leak in a connection part can be provided.

Front view of the connection fitting according to the present invention (Ii)-(ii) line sectional view of FIG. Rear view of the connection fitting according to the present invention Plan view of the connection fitting according to the present invention Right side view of the connection fitting according to the present invention Bottom view of the connection fitting according to the present invention (A) is a perspective view which shows the use condition of the connection metal fitting which concerns on this invention, (b) is a perspective view which shows the edge part structure of a U-shaped groove | channel. The side view which shows the use condition of the connection metal fitting which concerns on this invention The figure which shows an example of the vertical drainage method of the slope which concerns on this invention The figure which shows another example of the vertical drainage construction method of the slope which concerns on this invention Figure showing a conventional vertical drainage method

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a front view of a connection fitting according to the present invention, FIG. 2 is a sectional view taken along line (ii)-(ii) in FIG. 1, FIG. 3 is a rear view of the connection fitting, FIG. 4 is a plan view of the connection fitting, and FIG. Is a right side view of the connection fitting, FIG. 6 is a bottom view of the connection fitting, FIG. 7A is a perspective view showing the use state of the connection fitting, and FIG. 8 is a side view showing the use state of the connection fitting.

  The connection fitting 1 includes a corrugated tube 3 (see FIG. 7 (FIG. 7 (FIG. 7A) having an end portion of a U-shaped groove 2 (see FIGS. 7A and 8) embedded in the soil surface and a spiral protrusion 31 on the outer peripheral surface. a) and the end of FIG. 8) are connected, and the whole is formed by, for example, zinc hot dipped finish, and the connection cylindrical portion 11 for connecting the end of the corrugated tube 3 and this connection When the metal fitting 1 is attached to the end of the U-shaped groove 2, a partition plate 12 that shields a gap between the periphery of the connecting cylindrical portion 11 and the end of the U-shaped groove 2, and the partition plate 12 is formed into a U-shape. A fixing flange portion 13 for fixing to the end portion of the groove 2 is provided.

  The connecting cylindrical portion 11 is a portion that becomes a connecting portion with the corrugated tube 3, is formed so that the inner diameter is slightly larger than the outer diameter of the corrugated tube 3, and is provided so as to protrude only on one side of the partition plate 12. It has been. On the inner peripheral surface of the connecting cylindrical portion 11, a female screw portion 111 that is screwed with the concave groove portion 32 between the spiral ridges 31 provided on the outer peripheral surface of the corrugated tube 3 is a single plate member. Is formed by.

  The partition plate 12 is a plate-like member that shields the gap between the periphery of the connection cylindrical portion 11 and the end portion of the U-shaped groove 2, and allows the inside of the connection cylindrical portion 11 to penetrate the front and back with the partition plate 12 interposed therebetween. The communication hole 121 is formed as an opening.

  The communication hole 121 is formed to have a smaller diameter than the outer diameter of the corrugated tube 3. For this reason, when the corrugated tube 3 is inserted into the connecting cylindrical portion 11 from the side opposite to the partition plate 12, it strikes the portion of the communication hole 121 of the partition plate 12 and further insertion is prevented. The end portion is prevented from protruding into the U-shaped groove 2. When the end of the corrugated tube 3 protrudes into the U-shaped groove 2, a staying portion that is not smoothly drained is formed between the end of the protruding corrugated tube 3 and the partition plate 12 of the connection fitting 1. However, as shown in the present embodiment, the connecting cylindrical portion 11 is formed only on one surface of the partition plate 12 and the communication hole 121 has a smaller diameter than the outer diameter of the corrugated tube 3. As a result, the end of the corrugated tube 3 does not penetrate the partition plate 12 and protrude toward the U-shaped groove 2 side.

  The fixing flange portion 13 is a portion for fixing the partition plate 12 of the connection fitting 1 to the end portion of the U-shaped groove 2, and is bent and formed in a U shape that is the same shape as the end shape of the U-shaped groove 2. Yes. Specifically, two upper edge attachment portions 131 corresponding to the two upper edge portions 21 (see FIGS. 7 and 8) projecting on both sides from the upper edge of the U-shaped groove 2, and the upper edge attachment portions 131 It consists of a U-shaped attachment portion 132 that is continuous with the U-shaped groove 2 and that corresponds to the outer edge of the U-shaped groove 2, and is provided so as to protrude in the direction opposite to the connecting cylindrical portion 11 in the partition plate 12. .

  The upper edge attaching portion 131 and the U-shaped attaching portion 132 are formed with elongated hole insertion holes 133 for fixing to the end portion of the U-shaped groove 2 with bolts and nuts. The fixed flange portion 13 shown in the present embodiment has a total of five bolt insertion holes 133, one for each upper edge attachment portion 131 and three for the U-shaped attachment portion 132. By bolting the connection fitting 1, the connection work can be easily performed on site, and a troublesome and large-scale work such as placing mortar or concrete is not necessary.

  A U-shaped groove formed of a metal plate is preferably used for the U-shaped groove 2 to which the connection fitting 1 is attached. As the metal U-shaped groove, it is preferable to use a corrugated U-shaped flume that is formed in a wave shape as shown in the drawing because it is lightweight and excellent in strength and durability.

  At the end of the U-shaped groove 2, bolt insertion holes 22 are formed at positions corresponding to the bolt insertion holes 133 formed in the fixing flange portion 13 of the connection fitting 1, as shown in FIG. 7B. Has been.

  On the other hand, the corrugated tube 3 connected to the connection cylindrical portion 11 of the connection fitting 1 is a flexible tube made of synthetic resin made of polyethylene or the like, for example, and has a spiral protrusion 31 so as to protrude from the outer peripheral surface. A concave groove 32 is formed between the protrusions 31 and 31.

  Next, an example of a method for connecting the U-shaped groove 2 and the corrugated tube 3 with the connection fitting 1 will be described with reference to FIGS.

  First, the connecting cylindrical portion 11 is disposed so as to face the side opposite to the U-shaped groove 2, and the fixing flange portion 13 of the connecting fitting 1 is fitted to the end of the U-shaped groove 2. That is, the upper edge attachment portion 131 of the fixed flange portion 13 is brought into contact with the upper edge portion 21 of the U-shaped groove 2 from below, and the U-shaped attachment portion 132 is fitted to the outer surface of the end portion of the U-shaped groove 2. Make contact. At this time, for the purpose of ensuring water stoppage between the connection fitting 1 and the U-shaped groove 2, a packing (not shown) made of rubber or resin may be interposed between the contact portions of both. preferable.

  Thereafter, the bolts 14 are respectively inserted through the bolt insertion holes 133 of the fixed flange portion 13 and the bolt insertion holes 22 of the U-shaped groove 2, and are fastened with washers and nuts to thereby end the U-shaped groove 2. Attach and fix the connection fitting 1 to the.

  Next, while inserting the end portion of the corrugated tube 3 into the connection cylindrical portion 11 of the connection fitting 1 and rotating it, the groove 32 between the protrusions 31 on the outer peripheral surface and the inner peripheral surface of the connection cylindrical portion 11. The female thread part 111 is screwed together in the manner of a screw. Since the communication hole 121 has a smaller diameter than the outer diameter of the corrugated tube 3, the end portion of the corrugated tube 3 eventually abuts against the partition plate 12 around the communication hole 121. As a result, the end of the corrugated tube 3 is connected to the connecting cylindrical portion 11. At this time, for the purpose of ensuring water stoppage between the partition plate 12 and the corrugated tube 3 around the communication hole 121, a packing made of rubber or resin is provided between the tip of the corrugated tube 3 and the partition plate 12 (see FIG. (Not shown) is preferably interposed.

  The connecting cylindrical portion 11 shown in the present embodiment is formed with a bolt screwing hole 112 composed of a through hole and a nut for fixing the corrugated tube 3 screwed to the female screw portion 111 at the tip of the bolt. Has been. After the end of the corrugated tube 3 is screwed into the connecting cylindrical portion 11, the bolt 15 is screwed into the bolt screwing hole 112, and the tip of the bolt 15 is brought into strong contact with the outer peripheral surface of the corrugated tube 3. Thus, the corrugated tube 3 can be prevented from rotating in the connecting cylindrical portion 11, and the attached state of the corrugated tube 3 can be strengthened to prevent the corrugated tube 3 from coming out. Here, two bolt screw holes 112 are formed at opposing positions, but at least one bolt screw hole 112 may be formed.

  As described above, by using the connection fitting 1, it is possible to connect the U-shaped groove 2 and the pipe made of the corrugated pipe 3. This connection work does not need to be mortared or concreted as in the prior art, and the connection fitting 1 only needs a normal bolting work using bolts, nuts, etc., so it is extremely easy to perform on-site work. Can do.

  Moreover, since the U-shaped groove 2 and the corrugated tube 3 are firmly connected by the connection fitting 1 and the corrugated tube 3 has flexibility, even if frost heave occurs in the winter in a cold region, the U-shaped groove 2 There is no separation at the connection site between the undulating tube 3 and the undulating tube 3 and the undulating tube 3 can easily bend and follow the unevenness generated between the U-shaped groove 2 and the connecting portion. There is no risk of water leakage.

  As a connection method, the connection fitting 1 may be fixed to the end of the U-shaped groove 2 after the connection cylindrical portion 11 of the connection fitting 1 is connected to the corrugated tube 3.

  Next, an example of the vertical drainage method of the slope using the connection fitting 1 will be described with reference to FIG.

  In FIG. 9, S is a slope, 100 is a retaining fence, 101 is a retaining fence main body made of a fence, and 102 is H steel driven into the soil to support the retaining fence main body 101. The H steel 102 is fixed in the soil by filling concrete or mortar around it.

  This slope S is U-shaped along the slope of the slope S above and below the slope S of the slope S across the slope fence 100, by retaining the earth with the fence 100, respectively. 2A and 2B are divided and buried. The U-shaped grooves 2A and 2B are embedded so that the inside is opened above the slope S.

  The connection cylindrical portion 11 of the connection fitting 1 is screwed and connected to both ends of one corrugated tube 3 by the method described above, and then the connection fitting 1 is connected to the upper side of the slope S in the inclination direction. It fixes to the lower end of U-shaped groove 2A, and the upper end of U-shaped groove 2B below an inclination direction by the method mentioned above, respectively. As a result, the inside of the U-shaped groove 2 </ b> A above the slope S in the inclination direction and the inside of the U-shaped groove 2 </ b> B below the inclination direction are communicated with each other by one corrugated tube 3.

  Next, the corrugated pipe 3 is buried so as to straddle the bottom of the retaining fence main body 101 to form a culvert pipe.

  The earth retaining fence body 101 is laid again after the corrugated pipe 3 is buried, or when the vertical drainage work is performed after the earth retaining fence body 101 is laid, the corrugated pipe 3 is submerged by excavating the lower part of the earth retaining fence body 101 in advance. The both end portions are exposed from the ground surface, and the connection fittings 1 are fixed to the both end portions, respectively, and then the connection fittings 1 are fixed to the U-shaped grooves 2A and 2B, respectively.

  One end of a corrugated tube 3, which is a culvert tube, is connected to the lower end of the U-shaped groove 2 </ b> B via the connection fitting 1. The other end of the corrugated tube 3 is connected to a water collecting basin 4 embedded in the soil. The water collected in the water collecting basin 4 is drained to a terminal treatment facility such as a road drainage facility by a concrete pipe 5 or the like.

  According to this vertical drainage method, the use of the connecting fitting 1 eliminates the need for troublesome and large-scale operations such as placing mortar and concrete on site, and it is only an extremely simple task of bolting on site. The vertical drainage channel using the U-shaped groove 2 can be easily constructed, and there is no possibility of causing water leakage at the connection portion with the U-shaped grooves 2A, 2B and the corrugated tube 3.

  Further, in the slope S, the area above the retaining fence 100 in the inclination direction is likely to accumulate dirt such as earth and sand and dead leaves that have flowed from the upstream side, but this area is from the corrugated tube 3 that lies below the retaining fence 100. In this region, earth and sand and dust are not mixed into the vertical drainage channel.

  FIG. 10 shows another example of the vertical drainage method using the connection fitting 1.

  In this aspect, a connection in which the end of the U-shaped groove 6 that forms a horizontal drainage channel that connects a plurality of vertical drainage channels arranged in parallel on the slope is laterally connected to the lower side of the sloping fence 100 than the retaining fence 100 is connected. A flange 7 is provided, and the end of the corrugated tube 3 connected to the U-shaped groove 2 </ b> A by the connection fitting 1 is connected to the connection flange 7.

  The corrugated tube 3 is also connected between the connecting rod 7 and the U-shaped groove 2 </ b> B at the lower side in the inclination direction via the connecting fitting 1.

  According to this vertical drainage construction method, in addition to obtaining the same effect as FIG. 9, a horizontal drainage channel that connects the vertical drainage channels arranged in parallel to each other in the horizontal direction is provided. Can do.

DESCRIPTION OF SYMBOLS 1: Connection metal fitting 11: Connection cylindrical part 111: Female thread part 112: Bolt screwing hole 12: Partition plate 121: Communication hole 13: Fixed flange part 131: Upper edge attachment part 132: U-shaped attachment part 133: Bolt insertion hole 14, 15: Bolt 2, 2A, 2B: U-shaped groove 21: Upper edge portion 3: Wave-shaped pipe 31: Projection line 32: Concave groove part 4: Drainage trough 5: Concrete pipe 6: U-shaped groove of horizontal drainage channel 7 : Connection rod 100: Retaining fence 101: Retaining fence body 102: H steel S: Slope

Claims (5)

A connection fitting for connecting the end of a U-shaped groove embedded in the soil surface to the end of a corrugated tube having a spiral protrusion on the outer peripheral surface,
A connecting cylindrical part having an internal thread part screwed onto the protrusion of the corrugated tube on the inner peripheral surface;
A partition plate for shielding a gap between the periphery of the connecting cylindrical portion and the end of the U-shaped groove;
A fixing flange for fixing the partition plate to the end of the U-shaped groove;
A connection fitting between a U-shaped groove and a pipe, wherein the inside of the connection cylindrical portion penetrates the front and back sides with the partition plate in between.   2. The connection between the U-shaped groove and the tube according to claim 1, wherein the connecting cylindrical portion has a bolt screwing hole for fixing the corrugated tube screwed to the female screw portion with a tip of a bolt. Hardware. The connecting cylindrical portion is provided so as to protrude only on one surface of the partition plate, and the fixing flange portion is provided on the other surface of the partition plate on the side opposite to the connecting cylindrical portion. And
The said partition plate has a communicating hole formed in the diameter smaller than the outer diameter of the said corrugated tube for penetrating the inside of the said connection cylindrical part to the front and back on both sides of this partition plate. Or the connection bracket of the U-shaped groove and pipe of 2 description.   The U-groove and pipe connecting bracket according to claim 1, 2 or 3, wherein the fixed flange portion has a plurality of bolt insertion holes for bolting to an end of the U-shaped groove. A vertical drainage method for surface water that forms a vertical drainage channel along the slope of the slope with earth retaining by a retaining fence,
U-shaped grooves are embedded along the slope of the slope surface above and below the slope direction of the slope across the retaining fence, respectively.
The connection fitting of the U-shaped groove and the pipe according to any one of claims 1 to 4 is fixed to a lower end of the U-shaped groove above the slope surface and an upper end of the U-shaped groove below the slope direction, respectively. ,
An end portion of a corrugated tube having a spiral protrusion on the outer peripheral surface thereof is connected to the connection cylindrical portion of the connection fitting so that the female thread portion of the connection cylindrical portion and the protrusion of the corrugated tube are screwed together, respectively. By connecting, the U-shaped groove above the slope direction of the slope and the U-shaped groove below the slope direction are communicated by the corrugated pipe, and the corrugated pipe is embedded so as to straddle the bottom of the retaining fence. A vertical drainage method with a slope.

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