Waterway

Abstract

To provide a water channel capable of holding a wale material stably.SOLUTION: A water channel 1 comprises: a water channel body 2 that is made of a steel plate and that is formed in an U-shape by a first side wall part 211, a second side wall part 212 and a bottom part 22; a plurality of first wale materials 301 provided side by side in the extending direction X of the water channel body 2, in an upper end of the first side wall part 211; a second wale materials 302 provided side by side in the extending direction X in an upper end of the second side wall part 212; a strut 4 for connecting the first wale materials 301 and the second wale materials 302 separated in the width direction Y; a first wale material connection part 5 for connecting two first wale materials 301 neighboring in the extending direction X; and a second wale material connection part 6 for connecting two second wale materials 302 neighboring in the extending direction X. The first wale material connection part 5 and the second wale material connection part 6 are arranged in different positions in the extending direction X.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to waterways. [Background technology]

[0002] Conventionally, waterways such as irrigation waterways, agricultural waterways, and industrial waterways are known. Such waterways are made of U-shaped steel plates and are installed in trenches dug in the ground. As techniques related to waterways, the techniques disclosed in Patent Documents 1 to 5 have been proposed.

[0003] The corrugated flume in Patent Document 1 is characterized in that a strut having a cross section consisting of an apex portion followed by an inclined portion and coated with a water-repellent coating is attached to the upper edge of the corrugated flume body with the apex facing upward.

[0004] The design method of corrugated steel plate in Patent Document 2 is a method for designing the wave shape of a corrugated steel plate that constitutes a corrugated steel plate flume having a wave depth of H, a U-shape formed by both side walls and a bottom, and a straight portion length of the bottom of d.

[0005] The manufacturing method of stainless steel channel material for angle sections in Patent Document 3 is a method for manufacturing stainless steel channel material for angle sections in a stainless steel channel formed by connecting in the flow path direction multiple stainless steel channel materials made of corrugated stainless steel material that has a wave-shaped cross-section in the flow path direction.

[0006] The corrugated steel waterway member of Patent Document 4 is a corrugated steel waterway member using corrugated steel material whose cross section along the flow path direction is formed into a corrugated shape, and the corrugated steel material is stainless steel.

[0007] The waterway in Patent Document 5 is characterized in that it is composed of a waterway body made of corrugated steel plate bent into a U-shape in a direction perpendicular to the corrugation direction, a wale-raising member attached to the upper edge of the waterway body along the longitudinal direction of the waterway body, and a strut attached between the wale-raising members, and the wale-raising member is attached to the waterway body via a buffer member. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Utility Model Application Publication No. 1-167487 [Patent Document 2] International Publication No. 2013 / 2095 [Patent Document 3] JP 2015-169056 A [Patent Document 4] JP 2018-162594 A [Patent Document 5] JP 2018-76659 A Summary of the Invention [Problem to be solved by the invention]

[0009] In the techniques disclosed in Patent Documents 1 to 5, wale members are attached to the upper end of a U-shaped steel plate, and struts are further attached between the wale members. Waterways using such steel plates are installed on soft ground where liquefaction and uneven settlement are likely to occur, and thin steel plates that are relatively easy to bend are used so that they can follow the movements of the soft ground. The wale members and struts increase the rigidity, thereby reducing the deflection of the steel plate.

[0010] In the conventional waterway 9, as shown in Fig. 14(a) and Fig. 14(b), a wale-raising member 93 is joined to the upper end of a corrugated steel plate 92 via an angle member 96, and a plurality of wale-raising members 93 are arranged in the extension direction of the waterway 9. In the waterway 9, a pair of connecting parts 95, in which the wale-raising members 93 are connected to each other by bolts, are provided at intervals in the width direction of the waterway. However, the pair of connecting parts 95, 95 are arranged so that their positions in the extension direction match each other. Since the rigidity of the connecting part 95 is lower than the rigidity of the wale-raising member 93 itself, when the corrugated steel plate 92 is deformed due to the movement of the soft ground such as uneven settlement, there is a risk that the pair of connecting parts 95, 95 will be significantly deformed. For this reason, the wale-raising member cannot be stably held, and there is a risk that the function of the waterway cannot be performed.

[0011] Therefore, the present invention has been devised in consideration of the above-mentioned problems, and its object is to provide a waterway that is capable of stably holding the wale-raising material. [Means for solving the problem]

[0012] The waterway according to the first invention uses steel plates and includes a waterway body formed in a U-shape by a first side wall portion, a second side wall portion, and a bottom portion, a plurality of first wale-raising members arranged side by side in the extension direction of the waterway body at the upper end portion of the first side wall portion, a plurality of second wale-raising members arranged side by side in the extension direction at the upper end portion of the second side wall portion and spaced apart from the first wale-raising members in a width direction perpendicular to the extension direction, a strut connecting the first wale-raising members and the second wale-raising members spaced apart in the width direction, a first wale-raising member connecting portion connecting two of the first wale-raising members adjacent in the extension direction, and a first wale-raising member connecting portion connecting two of the second wale-raising members adjacent in the extension direction. and a second wale-raising member connecting portion that connects the wale-raising members, the steel plate being a corrugated steel plate having a wave shape in the extension direction, the first wale-raising member connecting portion and the second wale-raising member connecting portion being arranged at different positions in the extension direction, the waterway body having a steel plate joint portion that connects adjacent steel plates in the extension direction, the steel plate joint portion being configured by bolting together overlapping portions in which the ends of two adjacent steel plates in the extension direction are partially overlapped, and the steel plate joint portion is arranged at a position in the extension direction different from the first wale-raising member connecting portion and the second wale-raising member connecting portion, The waterway body is joined to the first wale-raising member and the second wale-raising member, and the first wale-raising member and the second wale-raising member have a first through hole through which a first bolt for bolting to the waterway body is passed, and the first through hole has an elongated hole shape extending along the extension direction. It is characterized by:

[0017] No. 2 The waterway according to the invention is: The waterway body is made of steel plate and formed in a U-shape by a first side wall portion, a second side wall portion, and a bottom portion. A plurality of first wale-raising members are arranged in the extension direction of the waterway body at the upper end of the first side wall portion. A plurality of second wale-raising members are arranged in the extension direction at the upper end of the second side wall portion and spaced apart from the first wale-raising members in the width direction perpendicular to the extension direction. A strut connecting the first wale-raising members and the second wale-raising members spaced apart in the width direction, a first wale-raising member connecting portion connecting two first wale-raising members adjacent to each other in the extension direction, and two second wale-raising members adjacent to each other in the extension direction. and a second wale-raising member connecting portion that connects the first and second wale-raising member connecting portions to each other, the steel plate being a corrugated steel plate having a wave shape in the extension direction, the first wale-raising member connecting portion and the second wale-raising member connecting portion being arranged at different positions in the extension direction, the waterway body having a steel plate joint portion that connects adjacent steel plates in the extension direction, the steel plate joint portion being configured by bolting together overlapping portions in which the ends of two adjacent steel plates in the extension direction are partially overlapped, and the steel plate joint portion is arranged at a position in the extension direction different from that of the first wale-raising member connecting portion and the second wale-raising member connecting portion. The waterway main body has a steel plate joint portion that connects adjacent steel plates in the extension direction, and the steel plate joint portion uses a third bolt that bolts adjacent steel plates in the extension direction and a third nut into which the third bolt is screwed, and the first and second wale-raising materials have a third through hole formed therein that is larger in diameter than the third bolt or the third nut, and the head of the third bolt or the third nut is positioned inside the third through hole. Effect of the Invention

[0018] According to the present invention, a waterway capable of stably holding a wale-raising material can be provided. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view showing an example of a water channel according to the first embodiment. [Diagram 2] FIG. 2 is a plan view showing an example of a water channel according to the first embodiment. [Diagram 3] FIG. 3 is a front view showing an example of a water channel according to the first embodiment. [Figure 4] FIG. 4 is an enlarged view of part a in FIG. [Diagram 5] FIG. 5 is an enlarged plan view showing an example of a water channel according to the first embodiment. [Figure 6] 6(a) is a cross-sectional view taken along line AA in FIG. 5, and FIG. 6(b) is a cross-sectional view taken along line BB in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. [Figure 8] FIG. 8(a) is an enlarged plan view showing an example of a water channel according to the second embodiment, and FIG. 8(b) is a cross-sectional view taken along line AA in FIG. 8(a). [Figure 9] FIG. 9(a) is an enlarged plan view showing an example of a water channel according to the third embodiment, and FIG. 9(b) is a cross-sectional view taken along line AA in FIG. 9(a). [Figure 10] FIG. 10(a) is an enlarged plan view showing a first modified example of a water channel according to the third embodiment, and FIG. 10(b) is a cross-sectional view taken along line AA in FIG. 10(b). [Figure 11] FIG. 13 is an enlarged front view showing an example of a water channel according to a fourth embodiment. [Figure 12] FIG. 12(a) is an enlarged plan view showing an example of a water channel according to the fourth embodiment, and FIG. 12(b) is a cross-sectional view taken along line AA in FIG. 12(a). [Figure 13]FIG. 13(a) is an enlarged plan view showing an example of a water channel according to the fifth embodiment, and FIG. 13(b) is a cross-sectional view taken along line AA in FIG. 13(a). [Figure 14] FIG. 14(a) is an enlarged front view of a conventional waterway, and FIG. 14(b) is a plan view of the conventional waterway, mainly showing the connection portion between the corrugated steel plate and the wale-raising member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given of an embodiment of a waterway to which the present invention is applied with reference to the drawings.

[0021] (First embodiment) Fig. 1 is a perspective view showing an example of a waterway 1 according to the first embodiment. Fig. 2 is a plan view showing an example of a waterway 1 according to the first embodiment. Fig. 3 is a front view showing an example of a waterway 1 according to the first embodiment. Hereinafter, the vertical direction is referred to as Z, the direction perpendicular to the vertical direction Z is referred to as the extension direction X, and the direction perpendicular to the vertical direction Z and the extension direction X is referred to as the width direction Y.

[0022] The waterway 1 is installed on soft ground prone to uneven settlement, liquefaction, etc. The waterway 1 comprises a waterway body 2, a waling member 3, a strut 4, a first waling member connecting portion 5, and a second waling member connecting portion 6.

[0023] The waterway body 2 is made of a steel plate. The steel plate used is a corrugated steel plate such as a corrugated steel plate. The waterway body 2 has a pair of side walls 21, 21 and a bottom 22 connecting the pair of side walls 21, 21. Of the pair of side walls 21, 21, one side wall 21 is a first side wall 211, and the other side wall 21 spaced apart from the first side wall 211 in the width direction Y is a second side wall 212. The waterway body 2 is formed into a U-shape in a cross section perpendicular to the extension direction X by the first side wall 211, the second side wall 212, and the bottom 22.

[0024] The waterway main body 2 is formed to extend in the extension direction X. The waterway main body 2 is formed by two L-shaped steel plates bolted together at the bottom 22 to have a U-shaped cross section. Alternatively, the waterway main body 2 may be formed by using a single steel plate formed in a U-shaped cross section, which is connected in multiple parts by bolting in the extension direction X and extends in the extension direction X.

[0025] The waterway body 2 has a steel plate joint portion 25 in which steel plates adjacent in the extension direction X are bolted to each other. The steel plate joint portion 25 has a bolt 258 and a nut 259 that bolt together an overlap portion 26 in which the ends of two steel plates adjacent in the extension direction X are partially overlapped. The overlap portion 26 is formed in the first side wall portion 211, the second side wall portion 212, the bottom portion 22, and the flange portion 23.

[0026] Fig. 4 is an enlarged view of part a in Fig. 3. The waterway body 2 has a flange portion 23 formed by bending a steel plate at the upper end portion 21a of the side wall portion 21. One flange portion 23 and the other flange portion 23 spaced apart in the width direction Y are formed by bending toward the outside of the waterway body 2. The flange portion 23 is formed by a steel plate extending along the horizontal direction. When the end portion of the flange portion 23 close to the side wall portion 21 is defined as a base end portion 23a and the end portion away from the side wall portion 21 is defined as a tip end portion 23b, the base end portion 23a and the tip end portion 23b are arranged at approximately the same height in the vertical direction Z. The flange portion 23 has a through hole 24 formed therein, through which a bolt 8 is inserted.

[0027] 3, the wale-raising members 3 are placed on the flange portions 23 in pairs spaced apart from each other in the width direction Y. For example, an H-shaped steel is used as the wale-raising member 3. The wale-raising member 3 may be an angle member having an L-shaped cross section, a C-shaped steel having a U-shaped cross section, or the like.

[0028] As shown in Fig. 4, the wale-raising material 3 has a through hole 31 formed therein, through which a bolt 8 passes. The wale-raising material 3 is placed on the flange portion 23, and is bolted to the flange portion 23 of the waterway main body 2 by the bolt 8 passing through the through hole 24 and the through hole 31. The through hole 31 is formed in a circular shape.

[0029] Fig. 5 is an enlarged plan view showing an example of a waterway according to the first embodiment. Fig. 6(a) is a cross-sectional view taken along line AA in Fig. 5, and Fig. 6(b) is a cross-sectional view taken along line BB in Fig. 5. Of a pair of wale-raising members 3, 3, one wale-raising member 3 is a first wale-raising member 301, and the other wale-raising member 3 spaced apart from the first wale-raising member 301 in the width direction Y is a second wale-raising member 302. The first wale-raising members 301 are arranged in a plurality in the extension direction X at the upper end portion 21a of the side wall portion 21 (first side wall portion 211). The second wale-raising members 302 are arranged in a plurality in the extension direction X at the upper end portion 21a of the side wall portion 21 (second side wall portion 212).

[0030] The first wale-raising member connecting portion 5 connects two adjacent first wale-raising members 301, 301 in the extension direction X by bolting them together. The first wale-raising member connecting portion 5 has a plate-shaped connecting plate 57 that is in contact across the two adjacent first wale-raising members 301, 301 in the extension direction X, and a connecting member 58 that bolts the first wale-raising member 301 and the connecting plate 57. A bolt and a nut are used as the connecting member 58.

[0031] The second wale-raising member connecting portion 6 connects two second wale-raising members 302, 302 adjacent to each other in the extension direction X by bolting them together. The second wale-raising member connecting portion 6 has a plate-shaped connecting plate 67 that is in contact across the two second wale-raising members 302, 302, and a connecting member 68 that connects the second wale-raising member 302 and the connecting plate 67 by bolts. A bolt and a nut are used as the connecting member 68.

[0032] The first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6 are arranged at different positions in the stretching direction X. That is, the waterway 1 has only one of the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6 in a cross section perpendicular to the stretching direction X. For example, as shown in FIG. 6(a), when the waterway 1 has the first wale-raising member connecting portion 5 in a cross section perpendicular to the stretching direction X, it does not have the second wale-raising member connecting portion 6. Similarly, as shown in FIG. 6(b), when the waterway 1 has the second wale-raising member connecting portion 6 in a cross section perpendicular to the stretching direction X, it does not have the first wale-raising member connecting portion 5.

[0033] In addition, the steel plate joint portion 25 is disposed at a position in the extension direction X different from the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6. In other words, when the waterway 1 has the steel plate joint portion 25 in a cross section perpendicular to the extension direction X, it does not have the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6.

[0034] Although not shown in the drawings, the steel plate joint portion 25 may be disposed at a position in the extension direction X different from either one of the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6. That is, when the waterway 1 has the steel plate joint portion 25 in a cross section perpendicular to the extension direction X, it may have either one of the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6.

[0035] Fig. 7 is a cross-sectional view taken along line AA in Fig. 3. The strut 4 connects a pair of wale-raising members 3, 3 (a first wale-raising member 301 and a second wale-raising member 302) spaced apart in the width direction Y. For example, a steel pipe is used for the strut 4. The strut 4 may be an angle member formed into an L-shape, a square steel pipe, a round steel bar, an H-beam, or the like. The strut 4 is bolted to the wale-raising member 3 via a mounting plate 41 made of a plate material.

[0036] According to this embodiment, a steel plate is used, and the waterway body 2 is formed in a U-shape by a first side wall portion 211, a second side wall portion 212, and a bottom portion 22. A plurality of first wale-raising members 301 are arranged in the extension direction X on the upper end portion 21a of the first side wall portion 211, and a plurality of second wale-raising members 302 are arranged in the extension direction X on the upper end portion 21a of the second side wall portion 212, and are spaced apart from the first wale-raising members 301 in the width direction Y perpendicular to the extension direction X. 02, a strut 4 connecting a first wale-raising material 301 and a second wale-raising material 302 spaced apart in the width direction Y, a first wale-raising material connecting portion 5 connecting two adjacent first wale-raising materials 301, 301 in the extension direction X, and a second wale-raising material connecting portion 6 connecting two adjacent second wale-raising materials 302, 302 in the extension direction X, and the first wale-raising material connecting portion 5 and the second wale-raising material connecting portion 6 are arranged at different positions in the extension direction X.

[0037] Here, when the soft ground is displaced due to uneven settlement or liquefaction, the degree of settlement varies depending on the location, and the waterway body 2 does not settle uniformly, but settles unevenly in the front, back, left and right directions. At this time, the waterway body 2 is deformed unevenly so as to be twisted with respect to the extension direction X. According to this embodiment, the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6 are arranged at different positions in the extension direction X. As a result, in a cross section perpendicular to the extension direction X having the first wale-raising member connecting portion 5, the rigidity of the second wale-raising member 302 is higher than the rigidity of the first wale-raising member connecting portion 5. Similarly, in a cross section perpendicular to the extension direction X having the second wale-raising member connecting portion 6, the rigidity of the first wale-raising member 301 is higher than the rigidity of the second wale-raising member connecting portion 6. Therefore, the first wale-raising material 301 and the second wale-raising material 302 each resist the twisting deformation of the waterway body 2, and it is possible to minimize the deformation of the first wale-raising material connecting part 5 and the second wale-raising material connecting part 6. As a result, it is possible to stably hold the wale-raising material 3, and it is possible to function as a waterway.

[0038] Furthermore, according to this embodiment, the waterway body 2 has a steel plate joint 25 that connects adjacent steel plates in the extension direction X, and the steel plate joint 25 is arranged at a position in the extension direction X different from the first wale-raising member connecting portion 5 and the second wale-raising member connecting portion 6. This allows the first wale-raising member 301 and the second wale-raising member 302 to resist deformation of the steel plate joint 25, minimizing deformation of the waterway body 2. As a result, it becomes possible to hold the wale-raising member 3 more stably, and to function as a waterway.

[0039] Furthermore, according to this embodiment, the waterway main body 2 has a flange portion 23 formed by bending a steel plate at the upper end portion 21a of the side wall portion 21, and the wale-raising material 3 is placed on the flange portion 23 and bolted to the flange portion 23. In other words, the flange portion 23 of the waterway main body 2 and the wale-raising material 3 are directly bolted to each other by the bolts 8 without interposing any member such as an angle member between the waterway main body 2 and the wale-raising material 3.

[0040] As a result, it is necessary to form the through holes 24 through which the bolts 8 pass only in the flange portions 23, and there is no need to form holes for fixing angle members or the like in the portions of the side wall portions 21 extending in the up-down direction Z. This makes it possible to improve the bearing strength of the waterway main body 2 itself.

[0041] Even if the side wall 21 is deformed due to ground fluctuations such as uneven settlement, since there are no holes for fixing angle members or the like in the portion of the side wall 21 extending in the vertical direction Z, breakage of the side wall 21 of the waterway main body 2 can be suppressed. Furthermore, when the ground fluctuates, the deformation of the flange 23 is smaller than that of the side wall 21, so that the bolts 8 can resist the shear force between the wale-raising material 3 and the flange 23, suppressing breakage of the flange 23. As a result, the wale-raising material 3 can be held even more stably, allowing the waterway to function.

[0042] Furthermore, according to this embodiment, the flange portion 23 of the waterway main body 2 and the wale-raising material 3 are directly bolted together by the bolts 8. This eliminates the need to interpose members such as angle members between the waterway main body 2 and the wale-raising material 3, and therefore the work of connecting the waterway main body 2 and the wale-raising material 3 can be completed in a short time. This makes it possible to improve workability.

[0043] Second embodiment Fig. 8(a) is an enlarged plan view showing an example of the water channel 1 according to the second embodiment, and Fig. 8(b) is a cross-sectional view taken along line AA in Fig. 8(a). Fig. 8 mainly shows an enlarged view of the vicinity of the wale-raising member 3.

[0044] The waterway 1 of the second embodiment differs from the first embodiment in that the waterway body 2 is joined to the first wale-raising material 301 and the second wale-raising material 302 so as to be movable relative to the first wale-raising material 301 and the second wale-raising material 302 in the extension direction X.

[0045] The first wale-raising member 301 has an elongated hole shape in which a through hole 31 through which a bolt 8 for bolting to the flange portion 23 of the waterway main body 2 is inserted extends along the extension direction X. The second wale-raising member 302 has an elongated hole shape in which a through hole 31 through which a bolt 8 for bolting to the flange portion 23 of the waterway main body 2 is inserted extends along the extension direction X.

[0046] The through hole 24 formed in the flange portion 23 is formed in a circular shape. The through hole 24 formed in the flange portion 23 may be an elongated hole extending along the stretching direction X. The through hole 24 formed in the flange portion 23 may be an elongated hole extending along the width direction Y.

[0047] According to this embodiment, the waterway body 2 is joined to the first wale-raising member 301 and the second wale-raising member 302 so as to be movable relative to the first wale-raising member 301 and the second wale-raising member 302 in the extension direction X. When the ground sinks due to uneven settlement or the like, the waterway body 2 tries to deform, for example, in the extension direction X. When the side wall portion 21 deforms in the extension direction X, the flange portion 23 can be moved in the extension direction X relative to the wale-raising member 3. This can reduce the shear force acting on the bolt 8, and can suppress the flange portion 23 from breaking. As a result, the wale-raising member 3 can be held more stably, and the function as a waterway can be exhibited.

[0048] According to this embodiment, the first wale-raising member 301 and the second wale-raising member 302 are formed with through holes 31 (first through holes) through which the bolts 8 for bolting to the waterway main body 2 are passed, and the through holes 31 are elongated holes extending along the extension direction X. When the waterway main body 2 is deformed in the extension direction X, the through holes 31 are elongated holes extending along the extension direction X, so that the flange portion 23 can be moved relative to the wale-raising member 3 in the extension direction X. This reduces the shear force acting on the bolts 8, and prevents the flange portion 23 from breaking. As a result, the wale-raising member 3 can be held more stably, and the function as a waterway can be exhibited.

[0049] Third embodiment Fig. 9(a) is an enlarged plan view showing an example of a waterway 1 according to a third embodiment, and Fig. 9(b) is a cross-sectional view taken along line AA in Fig. 9(b). Fig. 9 mainly shows an enlarged view of the vicinity of a steel plate joint portion 25.

[0050] The waterway 1 according to the third embodiment differs from the waterway 1 according to the second embodiment in that a through hole 32 (third through hole) having a diameter larger than that of the bolt 258 or the nut 259 is formed in the wale-raising material 3 .

[0051] The waterway body 2 has a steel plate joint 25 that connects adjacent steel plates in the extension direction X. The steel plate joint 25 uses a bolt 258 (third bolt) that bolts together adjacent steel plates in the extension direction X and a nut 259 (third nut) to which the bolt 258 is screwed.

[0052] The first wale-raising member 301 is formed with a circular through hole 32 (third through hole) having a diameter larger than that of the bolt 258 or the nut 259. Similarly, the second wale-raising member 302 is formed with a circular through hole 32 (third through hole) having a diameter larger than that of the bolt 258 or the nut 259.

[0053] 9, the head of bolt 258 is disposed above overlapping portion 26 formed in flange portion 23. At this time, diameter D of through hole 32 is larger than diameter d of the head of bolt 258. The head of bolt 258 is disposed inside through hole 32.

[0054] Although not shown in the drawings, the nut 259 may be disposed above the overlapping portion 26 formed on the flange portion 23. In this case, the diameter D of the through hole 32 may be set larger than the diameter d of the nut 259. The nut 259 is disposed inside the through hole 32.

[0055] Fig. 10(a) is an enlarged plan view showing a first modified example of the waterway 1 according to the third embodiment, and Fig. 10(b) is a cross-sectional view taken along line AA in Fig. 10(b). Fig. 10 mainly shows an enlarged view of the vicinity of a steel plate joint portion 25.

[0056] The first modified example of the waterway 1 according to the third embodiment differs from the waterway 1 according to the third embodiment in that a through hole 32 having a diameter larger than that of the bolt 258 or nut 259 is formed in the rib material 3, and the through hole 32 has a long hole shape extending along the extension direction X.

[0057] The first wale-raising member 301 is formed with a through hole 32 (third through hole) having a larger diameter than the bolt 258 or the nut 259. Similarly, the second wale-raising member 302 is formed with a through hole 32 (third through hole) having a larger diameter than the bolt 258 or the nut 259.

[0058] 10, the head of bolt 258 is disposed above overlapping portion 26 formed in flange portion 23. In this case, when through hole 32 has a major axis D1 along extension direction X and a minor axis D2 along width direction Y, through hole 32 has a major axis D1 and a minor axis D2 larger than diameter d of the head of bolt 258. The head of bolt 258 is disposed inside through hole 32.

[0059] Although not shown in the drawings, the nut 259 may be disposed above the overlapping portion 26 formed on the flange portion 23. In this case, it is only necessary that the major axis D1 and the minor axis D2 of the through hole 32 are larger than the diameter d of the nut 259. The nut 259 is disposed inside the through hole 32.

[0060] According to this embodiment, the waterway body 2 has a steel plate joint 25 that connects adjacent steel plates in the extension direction X, and the steel plate joint 25 uses a bolt 258 (third bolt) that bolts adjacent steel plates in the extension direction X and a nut 259 (third nut) to which the bolt 258 is screwed, and the first wale raising member 301 and the second wale raising member 302 are formed with a through hole 32 (third through hole) having a diameter larger than the head of the bolt 258 or the nut 259. This makes it possible to prevent the bolt 258 and the nut 259 that constitute the steel plate joint 25 from interfering with the wale raising member 3.

[0061] Furthermore, according to this embodiment, when the waterway main body 2 is deformed in the extension direction X, the flange portion 23 can be moved in the extension direction X relative to the wale-raising material 3. At this time, since the through hole 32 does not interfere with the steel plate joint portion 25, the flange portion 23 can be moved in the extension direction X relative to the wale-raising material 3 without being hindered by the steel plate joint portion 25. Therefore, the shear force acting on the bolt 8 can be reduced, and the flange portion 23 can be prevented from breaking.

[0062] (Fourth embodiment) Fig. 11(a) is an enlarged front view showing an example of the waterway 1 according to the fourth embodiment. Fig. 12(a) is an enlarged plan view showing an example of the waterway according to the fourth embodiment, and Fig. 12(b) is a cross-sectional view taken along line AA in Fig. 12(a). Fig. 12 mainly shows an enlarged view of the vicinity of the wale-raising material 3.

[0063] The waterway 1 according to the fourth embodiment differs from the waterway 1 according to the first to third embodiments in that the flange portion 23 of the waterway main body 2 is omitted and the waterway main body 2 has a support member 7.

[0064] The waterway main body 2 is formed such that the flange portion 23 is omitted and the side wall portion 21 extends in the vertical direction Z. The waterway main body 2 has a through hole 29 formed in the upper end portion 21a of the side wall portion 21, through which a bolt 78 passes. The waterway main body 2 has a support member 7 joined thereto, and is joined to the wale-raising material 3 via the support member 7. The waterway main body 2 is joined to the wale-raising material 93 via the support member 7 so as to be movable relative to the wale-raising material 3 in the extension direction X.

[0065] The support member 7 is bolted to the upper end portion 21a of the side wall portion 21, and supports the wale-raising material 3 by placing the wale-raising material 3 on it. An angle material having an L-shaped cross section is used for the support member 7. A C-shaped steel having a C-shaped cross section may also be used for the support member 7. The support member 7 has a first flat plate portion 71 extending in the vertical direction Z, and a second flat plate portion 73 extending perpendicular to the first flat plate portion 71.

[0066] The first flat plate portion 71 has a through hole 72 formed therein, through which a bolt 78 passes. The first flat plate portion 71 is bolted to the upper end portion 21a of the side wall portion 21 by the bolt 78. The second flat plate portion 73 has a circular through hole 74 formed therein, through which a bolt 8 passes. The second flat plate portion 73 abuts against the wale-raising material 3. The second flat plate portion 73 is bolted to the wale-raising material 3 by the bolt 8.

[0067] Even in this embodiment, it is possible to hold the wale-raising material 3 more stably, and the function as a waterway can be exerted.

[0068] According to this embodiment, the first wale-raising member 301 and the second wale-raising member 302 are formed with through holes 31 (first through holes) through which the bolts 8 for bolting to the waterway main body 2 are passed, and the through holes 31 are elongated holes extending along the extension direction X. Since the through holes 31 are elongated holes extending along the extension direction X, when the waterway main body 2 is deformed in the extension direction X, the support member 7 can be moved relative to the wale-raising member 3 in the extension direction X. This reduces the shear force acting on the bolts 8 and 78, and prevents the waterway main body 2 and the support member 7 from breaking. As a result, the wale-raising member 3 can be held more stably, and the function as a waterway can be exhibited.

[0069] Fifth embodiment Fig. 13(a) is an enlarged plan view showing an example of a waterway according to the fifth embodiment, and Fig. 13(b) is a cross-sectional view taken along line AA in Fig. 13(a). Fig. 13 mainly shows an enlarged view of the vicinity of the wale-raising member 3.

[0070] The waterway 1 according to the fifth embodiment differs from the waterway 1 according to the fourth embodiment in that the through-hole 74 of the support member 7 has an elongated hole shape extending in the extension direction X.

[0071] The support member 7 has a through hole 74 formed in the second flat plate portion 73, which has an elongated hole shape extending in the extension direction X. The second flat plate portion 73 has a bolt 8 passing through the elongated through hole 74. The second flat plate portion 73 is bolted to the wale-raising material 3 by the bolt 8.

[0072] Of the support members 7, the support member 7 supporting the first wale-raising member 301 is referred to as the first support member 701, and the support member 7 supporting the second wale-raising member 302 is referred to as the second support member 702. The first support member 701 is formed with a through hole 74 through which a bolt 78 for bolt-connecting to the first wale-raising member 301 is passed. The second support member 702 is formed with a through hole 74 through which a bolt 78 for bolt-connecting to the second wale-raising member 302 is passed. The through hole 74 has an elongated hole shape extending in the extension direction X.

[0073] 13, the through hole 31 formed in the wale-raising material 3 is formed in a circular shape. Although not shown in the drawings, the through hole 31 may be in the shape of an elongated hole extending in the extension direction X.

[0074] Even in this embodiment, it is possible to hold the wale-raising material 3 more stably, and the function as a waterway can be exerted.

[0075] According to this embodiment, the waterway body 2 has a first support member 701 that supports the first wale-raising member 301 and a second support member 702 that supports the second wale-raising member 302, and the first support member 701 and the second support member 702 are formed with a through hole 74 (second through hole) through which a bolt 78 (second bolt) for bolt-joining the first wale-raising member 301 and the second wale-raising member 302 is passed, and the through hole 74 has an elongated hole shape extending along the extension direction X. Since the through hole 74 has an elongated hole shape extending along the extension direction X, when the waterway body 2 is deformed toward the extension direction X, the support member 7 can be moved relative to the wale-raising member 3 in the extension direction X. Therefore, the shear force acting on the bolt 8 and the bolt 78 can be reduced, and the waterway body 2 and the support member 7 can be suppressed from breaking. As a result, the wale-raising member 3 can be held more stably, and the function as a waterway can be exhibited.

[0076] Although some of the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. In addition, these embodiments can be implemented in appropriate combinations. Furthermore, the present invention can be implemented in various new forms in addition to the above-mentioned several embodiments. Therefore, each of the above-mentioned several embodiments can be variously omitted, replaced, and modified without departing from the gist of the present invention. Such new forms and modifications are included in the scope and gist of the present invention, and are included in the scope of the invention described in the claims and the equivalents of the invention described in the claims. [Explanation of symbols]

[0077] 1: Waterway 2: Waterway body 21: Side wall 211: First side wall portion 212: Second side wall portion 21a: Upper end 22: Bottom 23: Flange part 23a: Proximal end 23b:Tip 24:Through hole 25: Steel plate joint 258: Bolt 259: Nut 26: Overlapped section 29:Through hole 3: Waxing material 301: First wale 302: Second wale 31:Through hole 32:Through hole 4:Surface 41: Mounting plate 5: First wale member connection part 57: Connecting plate 58: Joint material 6: Second wale member connection part 67: Connecting plate 68: Joint material 7: Support member 701: First support member 702: Second support member 71: 1st flat plate part 72: Through hole 73:Second flat plate part 74:Through hole 78: Bolt 8: Bolt 9: Waterway 92: Corrugated steel plate 93: Waxing material 95:Connection part 96: Angle iron X: Stretching direction Y: Width direction Z: Vertical direction

Claims

1. A waterway body made of steel plate and formed into a U-shape by a first side wall portion, a second side wall portion, and a bottom portion; A plurality of first flaps are arranged in the extension direction of the waterway body at the upper end of the first side wall portion; A plurality of second wale-raising members are arranged in the extension direction at the upper end of the second side wall portion and spaced apart from the first wale-raising member in a width direction perpendicular to the extension direction; A strut connecting the first wale member and the second wale member spaced apart in the width direction; A first wale-raising member connecting portion that connects two first wale-raising members adjacent to each other in the extension direction; A second wale-raising member connecting portion that connects two second wale-raising members adjacent to each other in the extension direction, The steel sheet is a corrugated steel sheet having a corrugated shape in the extension direction, The first wale-raising member connecting portion and the second wale-raising member connecting portion are arranged at different positions in the extension direction, The waterway body has a steel plate joint portion that connects adjacent steel plates in the extension direction, The steel plate joint portion is configured by bolting together an overlapping portion in which the ends of two steel plates adjacent to each other in the extension direction are partially overlapped, The steel plate joint portion is arranged such that its position in the extension direction is different from that of the first wale-raising member connecting portion and the second wale-raising member connecting portion, The waterway body is joined to the first wale member and the second wale member, The first and second wale-raising members have a first through hole through which a first bolt for bolting to the waterway main body is passed, The first through hole has an elongated hole shape extending along the extension direction. A waterway characterized by:

2. A waterway body made of steel plate and formed into a U-shape by a first side wall portion, a second side wall portion, and a bottom portion; A plurality of first flaps are arranged in the extension direction of the waterway body at the upper end of the first side wall portion; A plurality of second wale-raising members are arranged in the extension direction at the upper end of the second side wall portion and spaced apart from the first wale-raising member in a width direction perpendicular to the extension direction; A strut connecting the first wale member and the second wale member spaced apart in the width direction; A first wale-raising member connecting portion that connects two first wale-raising members adjacent to each other in the extension direction; A second wale-raising member connecting portion that connects two second wale-raising members adjacent to each other in the extension direction, The steel sheet is a corrugated steel sheet having a corrugated shape in the extension direction, The first wale-raising member connecting portion and the second wale-raising member connecting portion are arranged at different positions in the extension direction, The waterway body has a steel plate joint portion that connects adjacent steel plates in the extension direction, The steel plate joint portion is configured by bolting together an overlapping portion in which the ends of two steel plates adjacent to each other in the extension direction are partially overlapped, The steel plate joint portion is arranged such that its position in the extension direction is different from that of the first wale-raising member connecting portion and the second wale-raising member connecting portion, The waterway body has a steel plate joint portion that connects adjacent steel plates in the extension direction, The steel plate joint portion includes a third bolt that bolts together adjacent steel plates in the extension direction and a third nut into which the third bolt is screwed, The first and second wale-raising members each have a third through hole having a diameter larger than that of the third bolt or the third nut, and the head of the third bolt or the third nut is disposed inside the third through hole. A waterway characterized by:

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