JP4811630B2 - U-shaped groove - Google Patents

Description

  The present invention relates to a U-groove made of synthetic resin that can be used for agricultural and industrial waterways and drainage channels, and general civil engineering waterways and drainage channels.

  Conventional U-grooves made of concrete have been used as side gutters and drainage channels for civil engineering development in Yamano, but in recent years, synthetic resin U-grooves have been used in place of concrete U-grooves. Has reached. This synthetic resin U-shaped groove is lighter than the conventional concrete U-shaped groove, so it is easy to handle in terms of transportation and construction, while synthetic resin is made of concrete. In general, since the rigidity is low, particularly when a large earth pressure is applied from the outside of the side wall, there is a problem that the side wall is easily folded and deformed. Therefore, in order to solve this problem, a method of achieving improvement in rigidity against earth pressure from the outside of the side wall of the synthetic resin U-shaped groove by forming the side wall surface from the bottom wall surface of the U-shaped groove into a corrugated shape or similar uneven shape. Are known and used (Japanese Patent Laid-Open Nos. 61-83731 and 11-1956). It should be noted that in this type of U-shaped groove, designing the above uneven shape in the vicinity of the bottom of the U-shaped groove to prevent the rainwater or groundwater from flowing sufficiently, and the function as a flow path that is originally intended for use is sufficient. Can no longer be fulfilled. Therefore, a method of keeping the inner wall surface of the U-shaped groove flat and providing an uneven shape only on the outer wall surface (for example, Japanese Patent Laid-Open No. 8-151677, etc.) has been studied. This is not possible and this is not necessarily an advantageous measure.

However, in order to increase the rigidity against the earth pressure from outside the sidewall of the U-shaped groove, there is a limit to merely providing the shape of the U-shaped groove with an uneven groove, and the manufacturing cost increases even if the wall thickness is increased. . In addition, the earth pressure that pushes and deforms the left and right side walls inward during use of the U-shaped groove works not only in a direction perpendicular to the side walls but also in a direction oblique to the side walls. Further, the degree of earth pressure applied to the U-shaped groove is likely to be uneven when the entire U-shaped groove is viewed, and torsional stress tends to act on the U-shaped groove. Therefore, it is necessary to consider that the U-shaped groove has rigidity that can withstand pressure from various load directions. Therefore, in addition to devising the shape of the U-shaped groove, it has been synthesized by attaching several reinforcing materials across the side walls of the U-shaped groove at the upper part of the U-shaped groove, which is the weakest part of the U-shaped groove. A method for improving the rigidity against earth pressure on the side wall of the resin U-shaped groove is also known. For example, in the above-mentioned Japanese Patent Application Laid-Open No. 11-1956, a plurality of metal bridges that are provided with a reinforcing member arranged along the upper ends of both side wall portions and secured to the reinforcing member with rivets, bolts, and nuts in order to secure more strength. Disclosed is a structure spanned by a delivery material. Japanese Patent Laid-Open No. 2000-129768 discloses a receiving portion formed by arranging a reinforcing member made of a shape steel in the longitudinal direction in a receiving portion formed at the upper end portion of the opposite side wall of a synthetic resin U-shaped groove member. Fitted with a horizontal member fixed with bolts and nuts between them, or both ends are bent in an inverted U shape, and fitted into the upper end of both side walls of the U-shaped groove so as to straddle from above The U-shaped groove member bridged with the horizontal member which has a ridge part is shown. In the latter case, there is no need for a stopper for the horizontal member to be fixed to the U-shaped groove.
JP 61-83731 A JP-A-11-1956 Japanese Patent Laid-Open No. 8-151677 JP 2000-129768 A

In the above prior art, the reinforcing material that bridges both side walls of the U-shaped groove on the upper part of the U-shaped groove is mainly made of metal such as an angle-type steel material having a substantially L-shaped cross section, and is screwed on the upper side of the U-shaped groove. In addition, a stopper (fixing tool) such as a bolt or a nut is used, or both ends of the spanning reinforcing material have a complicated shape without requiring a fixing tool. However, the use of conventional fasteners such as screws and bolts and nuts to bridge the bridging material in the U-shaped groove makes the U-shaped groove laying work very complicated. Moreover, when both ends of the bridge reinforcing material have a complicated shape, there are many places to be bent when manufacturing the shape, which requires a large number of steps, which is disadvantageous in terms of manufacturing cost. Further, the conventional U-shaped groove requires a reinforcing metal auxiliary member extending in the longitudinal direction of the U-shaped groove as a reinforcing material receiving portion of the bridging material (Japanese Patent Laid-Open No. 11-1956). Japanese Patent Laid-Open No. 2000-129768), or a metal integrally formed as a reinforcing material and directly embedded in the upper part of both side walls of the U-shaped groove. This is because it is considered that arranging the metal reinforcing members in a ladder shape in the longitudinal direction and the width direction is effective in achieving a significant improvement in rigidity. However, the fact that the auxiliary member has to be mounted in the U-shaped groove for the arrangement of the bridging material makes the workability of laying the U-shaped groove worse. Further, the type in which the reinforcing material is embedded in the U-shaped groove by integral molding has a large number of processes and high cost in manufacturing the U-shaped groove. Further, since the metal corrodes, there is a possibility that the strength of the metal bridge material may be reduced and the appearance may be deteriorated due to the corrosion. Further, since the L-shaped angle-type steel material is attached in a state in which a sharp portion protrudes, there is a possibility that the worker may be injured or the worker's clothes may be caught and torn.
Therefore, an object of the present invention is to lay and fix a bridging material that can be easily mounted without requiring an auxiliary member or a fixture for mounting, and that is simple in shape and inexpensive to manufacture. Another object of the present invention is to provide a synthetic resin U-shaped groove provided with a bridging material that can ensure sufficient strength and high rigidity. In addition, it has a strength that is not inferior to that when using a metal bridging material, has no adverse effects due to corrosion, and does not have a shape that protrudes sharp parts that are prone to injury to workers. It is to provide a U-shaped groove that can be installed safely and easily.

The present inventor has intensively studied to solve the above problems. As a result, a U-shaped groove body formed in a corrugated shape by alternately forming a concave portion and a convex portion in the longitudinal direction of the U-shaped groove, and a horizontal wall between the left and right wall sides of the main body. A U-shaped groove provided with a bridging material, each of which forms a bridging material receiving portion at the upper part of the left and right inner wall sides of the main body, and simply fits the bridging material with a simple structure there It has been found that the U-shaped groove that can be easily attached has sufficient strength and high rigidity that is not inferior to the U-shaped groove using a conventional metal reinforcing material, and is excellent in workability. .
That is, the present invention
A U-shaped groove main body that forms a U-shaped wall in cross-section, wherein the concave stripes and the convex stripes extending from the bottom of the wall to the upper part of the left and right wall sides are alternately arranged in the longitudinal direction of the U-shaped groove. The U-shaped groove main body formed into a corrugated shape, the bridging material fixed horizontally between the left and right wall side portions of the main body, and the upper portions of the left and right wall side portions, respectively. A U-shaped groove comprising a formed bridging material receiving part capable of fitting the end of the bridging material formed;
The bridging material is a tube material, a cylindrical material or a shaft material that forms insertion holes at both ends,
The bridging material receiving portion is formed on the concave portion, and is formed on the lower side of the projecting portion inserted into the end portion of the bridging material and fitted by the end portion. Further, the present invention relates to a U-shaped groove made of a hard synthetic resin or a fiber reinforced resin, characterized by comprising a support portion that supports and fixes the fitted bridging material from below.

  In the U-shaped groove of the present invention, the bridging material is horizontally mounted and fixed by fitting the end portions of the bridging material to the bridging material receiving portions provided at the upper portions of the left and right wall sides of the U-shaped groove main body. It has a configuration that can be performed by stopping. Therefore, the attachment of the bridging material does not require fixing tools such as screws, bolts and nuts, and can be quickly performed by an extremely simple operation, and the time for installing the U-shaped groove can be shortened. In addition, since no fixture is required, the manufacturing cost can be reduced. Moreover, in the U-shaped groove of the present invention, the bridging material receiving portion is obtained simultaneously with molding as a part of the structure of the U-shaped groove main body. No auxiliary member is required. Moreover, since the thing of a simple shape called the shaft material which forms an insertion hole in a pipe material, a cylindrical material, or both ends can be used for a bridging material, it is not necessary to manufacture the bridging material of a complicated shape. Therefore, the present invention can provide a U-shaped groove with a simple configuration of only two members, a U-shaped groove main body and a bridging material, and the process of manufacturing these is not complicated. Furthermore, since all the members of the U-shaped groove of the present invention are made of hard synthetic resin or fiber reinforced resin, the strength is reduced by the corrosion and the appearance is deteriorated as compared with the case of using a metal bridging material as in the prior art. It does not occur, and the bridging material is lightweight, reducing the burden on the operator. In addition, the U-shaped groove of the present invention is not inferior to the case of using a conventional metal bridging material, and has sufficient rigidity against earth pressure loads from various directions applied near the upper part of the left and right side walls. This is a U-shaped groove that is difficult to deform. In addition, since the U-shaped groove member of the present invention has a structure in which a sharp portion does not protrude, the risk of injury to the operator and the possibility of the operator's clothes being caught and torn is reduced.

  The U-shaped groove main body made of the hard synthetic resin or the fiber reinforced resin of the present invention is continuous in the longitudinal direction of the U-shaped groove alternately with the ridges and ridges extending from the wall bottom to the upper part of the left and right wall sides. By forming, it is formed into a corrugated shape and has rigidity. The U-shaped groove of the present invention is installed horizontally between the left and right wall side portions of the U-shaped groove main body in order to increase the rigidity particularly against earth pressure from various load directions at the side portion.・ In order to fix the bridge material so that it can be attached to the left and right wall sides of the U-shaped groove body, a bridge material receiving part is formed at the upper part of the left and right wall sides. It is characterized in that it is shaped to do this. Therefore, the mounting of the bridging material in the U-shaped groove of the present invention does not require any fixing tools such as screws, bolts and nuts, so the conventional mounting and fixing work can be saved, and the mounting work can be performed very quickly and easily. be able to. Since this bridging material receiving portion is formed simultaneously with the molding of the U-shaped groove main body, no auxiliary member or fixture is required in addition to the shaped U-shaped groove main body in order to arrange the bridging material.

The U-shaped groove of the present invention uses, as a bridging material, a tube material made of a hard synthetic resin or a fiber reinforced resin similar to the U-shaped groove, a cylindrical material, or a shaft material that forms insertion holes at both ends, and is fastened. On the upper part of the left and right wall side parts of the U-shaped groove body on the side, a protrusion formed in a concave portion and inserted into the end of the bridging member and fitted by the end, and A bridging material receiving portion including a support portion that supports and fixes the fitted bridging material from below is provided below the protrusion. In the present invention, by fitting the end portion of the bridging material to the protrusion, the bridging material is horizontally mounted between the left and right wall side portions of the U-shaped groove main body, and at the same time the lower support portion of the protrusion Thus, the bridge material is supported from below. Since the above bridging material receiving portion is provided in the concave portion of the U-shaped groove, when the bridging material is fitted into the protrusion on the U-shaped groove main body side, the right and left side surfaces are adjacent to the convex portion. When it is designed closely to the structure and, that Do more reliably fixed hung passing material to U-shaped groove body. The bridging material consisting of a tubular material, a cylindrical material, or a shaft material that forms insertion holes at both ends can be attached very easily, and has a sufficiently high rigidity due to the material mechanical properties of the material. Sufficient rigidity is given to earth pressure load from various directions applied to the vicinity of the upper part of the left and right wall side portions of the gutter body. Moreover, since such a bridging material has an extremely simple shape, it does not require many steps for manufacturing.
In addition, if the U-shaped groove body of the present invention formed into the corrugated shape is formed in a structure in which the concave portion is warped inward at the upper part of the left and right wall side parts, Since the shape is narrowed from the outside to the inside, the rigidity of the upper portion of the wall side portion can be further increased. Furthermore, the U-shaped groove main body of the present invention can achieve higher rigidity by providing rib portions projecting outwardly on the left and right wall side portions, and further, on the outside from the wall side portion constituted by the rib portions. The portion that protrudes into the U-shaped groove can be laid more stably because earth and sand are accumulated and the load is applied when the U-shaped groove is buried, and the U-shaped groove is prevented from rising.

  The present invention will be described in more detail with reference to the drawings. The following examples are not intended to limit the invention.

Example In this example, as shown in FIGS. 1 and 2, in the U-shaped groove 1, a tubular material 7C shown in FIG. 4 is used as a bridging material. 1 is a perspective view for explaining the shape of the U-shaped groove 1 of the present embodiment, FIG. 2 is a plan view of the U-shaped groove 1 of the present embodiment, and FIG. 3 is a side view corresponding to FIG. is there.
The U-shaped groove 1 is made of various products having dimensional standards of, for example, widths 180 mm, 240 mm, 300 mm, 400 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, and 1000 mm, and each is a straight wall type. As is apparent from FIGS. 1 to 3, the U-shaped groove body 2 made of polyethylene resin has a shape in which the left and right wall side portions 4, 4 are each vertically raised from the wall bottom portion 3. Are formed into a corrugated shape by alternately forming in the longitudinal direction of the U-shaped groove 1 the concave stripe portions 5... And the convex stripe portions 6. . In addition to the shape rising vertically from the wall bottom 3 as in the present embodiment, the U-shaped groove body 2 may take a shape rising slightly outward toward the top. In addition, the U-shape of the cross section in the present invention includes a general one that forms a recessed space that forms a fluid passage. In addition to the original U-shape, the U-shape of the cross-section or a semicircular cross-section with an open upper surface is used. Including things. In this embodiment, polyethylene resin is used as the material of the U-shaped groove body and other members (such as bridging materials), but polyvinyl chloride, polypropylene, polyethylene terephthalate, polyamide, polyphenylene sulfide, etc. are also used. Further, fiber reinforced resin (FRP, FRTP) or the like in which glass fiber, carbon fiber, organic fiber (Kevlar or the like) is contained in unsaturated polyester or the like can be used. Furthermore, the U-shaped groove body 2 of the present invention can be formed by blow molding, rotational molding, or the like. The structure of the U-shaped groove 1 according to the present embodiment extends to the upper ends of the left and right wall side portions 4 and 4 as they are with respect to the ridge portions 6... And extends outward from the upper ends to form flat surfaces 8 and 8. To do. On the other hand, the concave stripe portions 5... Do not extend to the upper ends as they are at the upper portions of the left and right wall side portions 4, 4, but take the shape 5 a. 4 extends to the upper end of 4, extends outward from the upper end and is connected to the flat surfaces 8, 8. As a result, the upper portions of the side wall portions 4 and 4 of the U-shaped groove body 2 as a whole have a structure that is narrowed from the outside to the inside. With this structure, further rigidity is given to earth pressure from various load directions applied near the upper portions of the left and right wall side portions 4 and 4.

  As is clear from FIGS. 1, 5, and 6, a part of the inwardly curved shape 5 a... Is a pipe material that is a bridging material at a constant interval with respect to the longitudinal direction of the U-shaped groove 1. As a bridging material formed with a pair of protrusions 11a that can fit 7C on the left and right wall side parts 4 and 4 and that is fitted below the protrusions 11a. The support portions 11b for supporting the tube material 7C from below are formed. That is, the bridging material receiving portion 11 for the pipe material 7C is constituted by the protrusion 11a and the support portion 11b. In this embodiment, a hollow rectangular tube material 7C made of the same material as that of the U-shaped groove body 2 as shown in FIG. 4 is used, but the bridge material is inserted into another shape of tube material, tubular material, or both ends. The shape of the projecting portion 11a,... And the support portion 11b,... Is designed in accordance with the shape of the bridging material to be used. As shown in FIGS. 1, 5 and 6, the resin tube 7 </ b> C of FIG. 4, which is a bridging material, is recessed so that both ends thereof are pushed open on both sides of the U-shaped groove wall side parts 4, 4. The protrusions 11a and 11a formed on the strip portions 5 and 5 are fitted to the side walls and horizontally placed, and at the same time, they are simultaneously supported and fixed from below the support portions 11b and 11b. Further, in this embodiment, as shown in FIGS. 1 and 5, when the tube material 7C is fitted to the protrusion 11a in the U-shaped groove body 2, the left and right side surfaces thereof are adjacent to the protruding ridge portions 6. Since the tube material 7C to the U-shaped groove main body 2 is supported from three sides, the fixing becomes more reliable. By laying the tube material 7C horizontally, the U-shaped groove 1 of the present invention can obtain high rigidity against the earth pressure applied to the both side portions 4, 4 of the U-shaped groove main body 2. Deformation can be prevented. Since this pipe member 7C is attached by a simple fitting operation as a bridging material, it does not require fixing tools such as screws, bolts and nuts, and rivets, and the bridging operation can be advanced more quickly. In the case of this embodiment as well, as shown in FIG. 2, it is possible to use another bridging material 7B attached by attaching with rivets 10 together. Further, as shown in FIGS. 1 to 3, in this embodiment, rib portions 15 are provided on the left and right wall side portions 4, 4 of the U-shaped groove body 2, and further, the wall bottom portion 3 is prevented from rising. The material 30 can also be attached.

It is a perspective view which shows the U-shaped groove | channel of the Example of this invention. It is a top view which shows the U-shaped groove | channel of the Example of this invention. It is a side view of the U-shaped groove | channel of the Example of this invention shown in FIG. It is the front view (a) and side view (b) of the pipe material which are the bridging materials used for the U-shaped groove of the Example of this invention. FIG. 5 is a partial plan view of a U-shaped groove formed by fitting the tubular material shown in FIG. 4 to a protrusion of the U-shaped groove main body. It is sectional drawing cut | disconnected by the EE line | wire of FIG.

DESCRIPTION OF SYMBOLS 1 U-shaped groove 2 U-shaped groove main body 3 Wall bottom part 4 Wall side part 5 Convex part 5a Warped shape 6 Convex part 7B Square angle material 7C Pipe material 8 Crossing material receiving surface 9 Receiving recessed part 10 Rivet 11a Protrusion Part 11b Support part 15 Rib part 20 Reinforcing material

Claims (1)

A U-shaped groove main body that forms a U-shaped wall in cross-section, wherein the concave stripes and the convex stripes extending from the bottom of the wall to the upper part of the left and right wall sides are alternately arranged in the longitudinal direction of the U-shaped groove. The U-shaped groove main body formed into a corrugated shape, the bridging material fixed horizontally between the left and right wall side portions of the main body, and the upper portions of the left and right wall side portions, respectively. A U-shaped groove comprising a formed bridging material receiving part capable of fitting the end of the bridging material formed;
The bridging material is a tube material, a cylindrical material or a shaft material that forms insertion holes at both ends,
The bridged passing member receiving portion, said concave is formed at a portion, and the projection to be fitted by the end portion and inserted into the ends of the cross only pass material, it is formed on the lower side of the projecting portion A U-shaped groove made of hard synthetic resin or fiber reinforced resin, characterized by comprising a support portion for supporting and fixing the fitted bridging material from below .

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