Joining structure of corrugated section, and corrugated structure

Abstract

To provide a joining structure of corrugated sections that facilitates joining of corrugated sections in a corrugation direction.SOLUTION: A joining structure 10 of corrugated sections joins corrugated sections 11, 12 in a corrugation direction, and comprises: a plurality of corrugated sections 11, 12 neighboring in the corrugation direction; a first flange 31 provided at an end of one corrugated section 11 and having a main surface that intersects with the corrugation direction; and a second flange 41 provided at an end of the other corrugated section 12 and having a main surface that intersects with the corrugation direction. The first flange 31 and the second flange 41 are butted against each other and joined via a fastening member 6.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a joint structure for a corrugated section and a corrugated structure. [Background technology]

[0002] Corrugated pipes are formed with a circular cross section and are used as waterways or passageways that cross, for example, roads, railways, and under construction embankments. U-shaped flumes are formed with a U-shaped cross section and are used, for example, as open channel structures such as irrigation channels. Corrugated pipes and U-shaped flumes are made by combining multiple corrugated sections made of thin steel plates processed to be corrugated. For example, Patent Documents 1 and 2 disclose technologies related to corrugated pipes.

[0003] The corrugated pipe section of Patent Document 1 is characterized in that the upper corner of at least one end in a direction perpendicular to the corrugation direction is chamfered.

[0004] The method of assembling a corrugated pipe in Patent Document 2 involves assembling a plurality of bottom corrugated sections, The pipe is divided into a plurality of blocks each consisting of a plurality of bottom corrugated sections, and the first block is first assembled. Next, a plurality of left, right and top corrugated sections are joined to the first block in order from the upstream side to assemble the first corrugated pipe section. The downstream end of the first block is then lifted upward, and the downstream end of the first block is overlapped and joined to the upstream end of the second block which has been assembled in advance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-121445 [Patent Document 2] Japanese Patent Application Publication No. 10-121446 Summary of the Invention [Problem to be solved by the invention]

[0006] Typically, when constructing a corrugated pipe, the bottom corrugated section is installed in a line from downstream to upstream, and then the side corrugated sections and the top corrugated section are installed in a line from upstream to downstream on the bottom corrugated section. In this way, construction takes time because the construction worker advances upstream to install the bottom corrugated section, and then advances downstream to construct the side and top corrugated sections.

[0007] In the techniques disclosed in Patent Documents 1 and 2, when joining corrugated sections in the corrugation direction, the ends in the corrugation direction are overlapped with each other and joined with bolts. Because the corrugated sections need to be overlapped at the top and bottom to match the wave shape of the corrugated sections, it takes time to adjust their positions. For this reason, joining corrugated sections in the corrugation direction is not easy.

[0008] Therefore, the present invention has been devised in consideration of the above-mentioned circumstances, and its object is to provide a corrugated section joining structure and a corrugated structure that make it easy to join corrugated sections in the corrugation direction. [Means for solving the problem]

[0009] The corrugated section joining structure of the present invention is a corrugated section joining structure that joins corrugated sections in the corrugation direction, and is characterized in that it comprises a plurality of corrugated sections adjacent to each other in the corrugation direction, a first flange provided at an end of one of the corrugated sections and having a main surface that intersects with the corrugation direction, and a second flange provided at the end of the other of the corrugated sections and having a main surface that intersects with the corrugation direction, and the first flange and the second flange are joined by butting against each other.

[0010] A corrugated structure according to the present invention is a corrugated structure using corrugated sections, and includes a corrugated unit formed by the corrugated sections to have a circular or U-shaped cross section. The corrugated unit includes the corrugated sections, a first flange provided at an end of the corrugated section on one end side of the corrugated unit and having a main surface intersecting with a corrugation direction of the corrugated section, and a second flange provided at the end of the corrugated section on the other end side of the corrugated unit and having a main surface intersecting with the corrugation direction, and the first flange is butt-joined to the second flange of another corrugated unit adjacent to the corrugated unit in the corrugation direction. [Effects of the Invention]

[0011] According to the present invention, a first flange is provided at an end of one of the corrugated sections and has a main surface intersecting the corrugation direction, and a second flange is provided at an end of the other of the corrugated sections and has a main surface intersecting the corrugation direction, and the first flange and the second flange are butt-joined to each other. This eliminates the need to overlap the ends of the corrugated sections in the corrugation direction when joining the corrugated sections. Therefore, according to the present invention, joining the corrugated sections in the corrugation direction is easy. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a side view showing an example of a joining structure of corrugated sections in the first embodiment. [Figure 2] FIG. 2(a) is a front view showing one end of the corrugated unit in the first embodiment, and FIG. 2(b) is a rear view showing the other end of the corrugated unit in the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing an example of a joining structure of corrugated sections in the first embodiment. [Figure 4]FIG. 4(a) is a front view showing an example of a hanging hardware in the first embodiment, and FIG. 4(b) is a side view of FIG. 4(a). [Figure 5] FIG. 5 is a cross-sectional view showing an example of a joining structure of corrugated sections in the second embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing an example of a joining structure of corrugated sections in the third embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing an example of a joining structure of corrugated sections in the fourth embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing an example of a joining structure of corrugated sections in the fifth embodiment. [Figure 9] FIG. 9(a) is a front view showing one end of the corrugated unit in the sixth embodiment, and FIG. 9(b) is a rear view showing the other end of the corrugated unit in the sixth embodiment. [Figure 10] FIG. 10(a) is a front view showing one end of the corrugated unit in the seventh embodiment, and FIG. 10(b) is a rear view showing the other end of the corrugated unit in the seventh embodiment. [Figure 11] FIG. 11(a) is a front view showing one end of the corrugated unit according to the eighth embodiment, and FIG. 11(b) is a rear view showing the other end of the corrugated unit according to the eighth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out a joining structure of a corrugated section and a corrugated structure to which the present invention is applied will be described in detail with reference to the drawings.

[0014] First Embodiment As shown in Figures 1 to 3, a corrugated structure 100 is used, for example, as a water channel extending along a planar direction. The corrugated structure 100 may be used as a well-known corrugated structure such as a corrugated cell or a corrugated water tank. The corrugated structure 100 is, for example, a corrugated pipe formed into a circular cross section by corrugated sections 1. The corrugated structure 100 is constructed by joining a plurality of corrugated units 2, each of which has a circular cross section, in the corrugation direction of the corrugated sections 1. The corrugated sections 1 are corrugated thin steel plates that have been bent, for example, into a circular arc shape when viewed from a direction intersecting the corrugation direction.

[0015] The corrugated unit 2 includes a plurality of corrugated sections 1, a first shaped steel 3 provided at one end of the corrugated unit 2, and a second shaped steel 4 provided at the other end of the corrugated unit 2. The corrugated unit 2 may further include a lifting hardware 5. The first shaped steel 3 of one corrugated unit 2 and the second shaped steel 4 of the other corrugated unit 2 are joined via a fastening member 6.

[0016] The corrugated unit 2 is a corrugated pipe formed into a circular cross section by joining a plurality of corrugated sections 1, each bent into an arc shape, in the circumferential direction. Circumferentially adjacent corrugated sections 1 are joined by overlapping their ends with bolts. The corrugated unit 2 may be formed by joining, for example, six corrugated sections 1 in the circumferential direction with bolts.

[0017] In the corrugated unit 2, the corrugated sections 1 adjacent to each other in the corrugation direction between the first shaped steel 3 and the second shaped steel 4 are joined by bolts with their ends overlapping each other.

[0018] In the corrugated unit 2, a plurality of corrugated sections 1 are arranged in a staggered pattern in the corrugation direction. In the corrugated sections 1 at the ends of the corrugated unit 2, the length of one corrugated section 1 in the corrugation direction is half the length of another corrugated section 1 adjacent to it in the circumferential direction in the corrugation direction. The corrugated section 1 at one end of the corrugated unit 2 is referred to as corrugated section 11, and the corrugated section 1 at the other end of the corrugated unit 2 is referred to as corrugated section 12.

[0019] 3, the corrugated structure 100 includes a corrugated section joining structure 10 that joins a corrugated section 11 of one corrugated unit 2-1 and a corrugated section 12 of the other corrugated unit 2-2 in the corrugation direction. Hereinafter, the corrugated section joining structure 10 may also be simply referred to as the joining structure 10.

[0020] The joint structure 10 comprises a plurality of corrugated sections 11, 12 adjacent to each other in the corrugation direction, a first flange 31 provided at the end of one of the corrugated sections 11 and having a main surface intersecting the corrugation direction, and a second flange 41 provided at the end of the other corrugated section 12 and having a main surface intersecting the corrugation direction.

[0021] As shown in Fig. 3, a first shaped steel 3 is provided at the end of the corrugated section 11 in the corrugation direction. The first shaped steel 3 is, for example, an angle steel, and has a first flange 31 having a main surface that intersects with the corrugation direction of the corrugated section 11, and a first side plate portion 32 that stands upright relative to the first flange 31.

[0022] As shown in FIG. 2(a), the first shaped steel 3 is formed in an arc shape along the circumferential direction of the corrugated section 11. The first shaped steel 3 does not span multiple corrugated sections 11, but is provided independently for each corrugated section 11. That is, an independent first shaped steel 3 is provided for each of the six corrugated sections 11. Note that one first shaped steel 3 may be provided for multiple corrugated sections 11, or multiple first shaped steels 3 may be provided for one corrugated section 11.

[0023] As shown in Fig. 3, a second shaped steel 4 is provided at the end of the corrugated section 12 in the corrugation direction. The second shaped steel 4 is, for example, an angle steel, and has a second flange 41 having a main surface that intersects with the corrugation direction of the corrugated section 12, and a second side plate portion 42 that stands upright relative to the second flange 41.

[0024] As shown in FIG. 2(b), the second section steel 4 is formed in an arc shape along the circumferential direction of the corrugated section 12. The second section steel 4 is provided independently for each corrugated section 12 without spanning multiple corrugated sections 12. That is, an independent second section steel 4 is provided for each of the six corrugated sections 12. Note that one second section steel 4 may be provided for multiple corrugated sections 12, or multiple second section steels 4 may be provided for one corrugated section 12.

[0025] 3, the first flange 31 of the corrugated unit 2-1 is butted against the second flange 41 of the corrugated unit 2-2 and joined via a fastening member 6. The fastening member 6 is, for example, a bolt and nut. The first flange 31 of the corrugated unit 2-1 may also be butted against the second flange 41 of the corrugated unit 2-2 and joined by welding.

[0026] The first flange 31 is disposed on the inner surface side of the corrugated section 11, which is inside the corrugated unit 2 having a circular cross section.

[0027] The first side plate portion 32 is joined to the inner surface of the corrugated section 11, which is the inside of the corrugated unit 2 having a circular cross section, via a fastening member 7. The fastening member 7 may be, for example, a bolt or nut. The first side plate portion 32 may be joined to the inner or outer surface of the corrugated section 11 by welding.

[0028] The second flange 41 is disposed on the inner surface side of the corrugated section 12, which is inside the corrugated unit 2 having a circular cross section.

[0029] The second side plate portion 42 is joined to the inner surface of the corrugated section 12, which is the inside of the corrugated unit 2 having a circular cross section, via a fastening member 7. The second side plate portion 42 may be joined to the inner or outer surface of the corrugated section 12 by welding.

[0030] In this embodiment, angle steel with an L-shaped cross section is used as the first shaped steel 3 and the second shaped steel 4, but in the present invention, it is sufficient that they have a first flange and a second flange that can be joined by butting against each other, and they may be well-known shaped steel such as a channel steel with a C-shaped cross section, a CT steel with a T-shaped cross section, or a Z-shaped steel with a Z-shaped cross section.

[0031] As shown in Fig. 1, the hoisting fitting 5 is provided on top of the corrugated unit 2, which has a circular cross section. The hoisting fitting 5 allows the corrugated unit 2, which is made up of a plurality of corrugated sections 1 joined together in a staggered pattern, to be lifted by a crane or the like.

[0032] As shown in Figures 4(a) and 4(b), the lifting hardware 5 has an H-shaped steel 51 bolted to the corrugated section 1, and a steel plate 52 fixed to the H-shaped steel 51. The material axis direction of the H-shaped steel 51 extends along the extension direction of the corrugated unit 2. Holes are formed in the steel plate 52, and a crane hook can be hooked into the hole. Multiple steel plates 52 are fixed to the H-shaped steel 51.

[0033] Next, an example of a method for constructing the corrugated structure 100 according to the first embodiment will be described.

[0034] The method for constructing the corrugated structure 100 includes a unit constructing step of constructing a plurality of corrugated units 2, and a joining step of joining the constructed corrugated units 2 together.

[0035] In the unit construction process, a plurality of corrugated sections 1 bent into an arc shape are joined in the circumferential direction to form a circular cross section. In the unit construction process, a first shaped steel 3 is joined to a corrugated section 11 provided at one end via a fastening member 7, and a second shaped steel 4 is joined to a corrugated section 12 provided at the other end via a fastening member 7. Then, in the unit construction process, a hanging fitting 5 is attached to the corrugated section 1 located at the top. In this way, corrugated units 2-1 and 2-2 are constructed in the unit construction process.

[0036] In the joining process, the constructed corrugated units 2-1 and 2-2 are each lifted by a crane or the like using the lifting hardware 5 and installed in a predetermined location. In the joining process, the first flange 31 of the first shaped steel 3 of the corrugated unit 2-1 and the second flange 41 of the second shaped steel 4 of the corrugated unit 2-2 are butted against each other and joined via fastening members 6.

[0037] The unit construction step and the joining step are repeated to complete an example of the method for constructing the corrugated structure 100 according to the first embodiment.

[0038] According to this embodiment, a first flange 31 is provided at the end of one corrugated section 11 and has a main surface that intersects with the corrugation direction, and a second flange 41 is provided at the end of the other corrugated section 12 and has a main surface that intersects with the corrugation direction. The first flange 31 and the second flange 41 are butt-joined to each other. This allows adjacent corrugated sections 11 and 12 in the corrugation direction to be joined without overlapping each other. This makes it easy to join the corrugated sections 1 in the corrugation direction.

[0039] According to this embodiment, the first flange 31 and the second flange 41 are butted against each other and joined via the fastening member 6. This allows the corrugated sections 11 and 12 to be joined at the installation site of the corrugated structure 100 without using welding equipment or the like. This makes it even easier to join the corrugated sections 11 and 12 in the corrugation direction.

[0040] According to this embodiment, the corrugated section 11 includes a first side plate portion 32 that is arranged upright relative to the first flange 31, and a second side plate portion 42 that is arranged upright relative to the second flange 41. One corrugated section 11 and the first side plate portion 32 are joined via a fastening member 7, and the other corrugated section 12 and the second side plate portion 42 are joined via the fastening member 7. This allows the corrugated section 11 to be joined to the first shaped steel 3, and the corrugated section 12 to be joined to the second shaped steel 4, without using welding equipment or the like. This makes it even easier to join the corrugated sections 1 in the corrugation direction.

[0041] According to this embodiment, the first flange 31 of one corrugated unit 2-1 is butted against the second flange 41 of another corrugated unit 2-2 adjacent to the corrugated unit 2-1 in the corrugation direction. This allows the corrugated units 2-1 and 2-2, which are unitized by joining a plurality of corrugated sections 1, to be joined together. This allows the corrugated structure 100 to be constructed by sequentially joining the unitized corrugated units 2 in predetermined sections. As a result, when constructing a waterway by temporarily cofferdam, for example, the temporary cofferdam section can be shortened, making it easier to construct the corrugated structure 100.

[0042] According to this embodiment, the corrugated unit 2 is provided with a hanging bracket 5. This allows the corrugated unit 2, which is a unit formed from a plurality of corrugated sections 1, to be lifted by a crane or the like. This makes it even easier to construct the corrugated structure 100.

[0043] According to this embodiment, the first flange 31 is disposed on the inner surface side of the corrugated section 11, and the second flange 41 is disposed on the inner surface side of the corrugated section 12. As a result, for example, when the corrugated structure 100 is constructed as a waterway, the first flange 31 and the second flange 41 can resist the flow of water. Therefore, even when the corrugated structure 100 is installed in a steeply inclined location, an increase in flow velocity can be suppressed. Furthermore, since the first flange 31 and the second flange 41 can be joined from the inside of the corrugated structure 100, joining the first flange 31 and the second flange 41 becomes easy.

[0044] According to this embodiment, the first side plate portion 32 is disposed on the inner surface of the corrugated section 11, and the second side plate portion 42 is disposed on the inner surface of the corrugated section 12. As a result, when the corrugated structure 100 is constructed as a waterway, for example, the first side plate portion 32 and the second side plate portion 42 can provide resistance to the flow of water. Therefore, even when the corrugated structure 100 is installed in a place with a steep slope, an increase in flow velocity can be suppressed.

[0045] According to this embodiment, the corrugated unit 2 is a corrugated pipe formed to have a circular cross section by a plurality of corrugated sections 1. This allows the corrugated structure 100 to be suitably used as a corrugated pipe.

[0046] According to this embodiment, the corrugated structure 100 is used as a waterway, and therefore, the corrugated structure 100 can be suitably used as a waterway.

[0047] Second Embodiment Next, a joining structure 10 in a second embodiment will be described. Differences from the above-described embodiment will be mainly described below, and detailed descriptions of configurations similar to those in the above-described embodiment will be omitted. As shown in Fig. 5, the joining structure 10 in the second embodiment differs from the first embodiment mainly in the arrangement of the first side plate portion 32 and the second side plate portion 42.

[0048] The first side plate portion 32 is joined via a fastening member 7 to the outer surface of the corrugated section 11, which is the outer side of the corrugated unit 2 having a circular cross section.

[0049] The second side plate portion 42 is joined via a fastening member 7 to the outer surface of the corrugated section 12, which is the outer side of the corrugated unit 2 having a circular cross section.

[0050] <Third embodiment> Next, a joining structure 10 according to a third embodiment will be described. As shown in Fig. 6, the joining structure 10 according to the third embodiment differs from the first embodiment mainly in the arrangement of the first flange 31 and the second flange 41.

[0051] The first flange 31 is disposed on the outer surface side of the corrugated section 11, which is the outside of the corrugated unit 2 having a circular cross section.

[0052] The first side plate portion 32 is joined via a fastening member 7 to the outer surface of the corrugated section 11, which is the outer side of the corrugated unit 2 having a circular cross section.

[0053] The second flange 41 is disposed on the outer surface side of the corrugated section 12, which is the outside of the corrugated unit 2 having a circular cross section.

[0054] The second side plate portion 42 is joined via a fastening member 7 to the outer surface of the corrugated section 12, which is the outer side of the corrugated unit 2 having a circular cross section.

[0055] <Fourth embodiment> Next, a joining structure 10 according to a fourth embodiment will be described. As shown in Fig. 7, the joining structure 10 according to the fourth embodiment differs from the first embodiment mainly in that a flat first flat plate 33 is provided at the end of the corrugated section 11 in the corrugation direction, and a flat second flat plate 43 is provided at the end of the corrugated section 12 in the corrugation direction.

[0056] A flat first flat plate 33 is provided at the end of the corrugated section 11 in the corrugation direction. The first flat plate 33 has a first flange 31 having a main surface that intersects with the corrugation direction of the corrugated section 11. The first flat plate 33 is formed in an arc shape along the circumferential direction of the corrugated section 11. The first flat plate 33 does not span multiple corrugated sections 11, but is provided independently for each corrugated section 11. Note that multiple first flat plates 33 may be provided in one corrugated section 11.

[0057] A flat second flat plate 43 is provided at the end of the corrugated section 12 in the corrugation direction. The second flat plate 43 has a second flange 41 having a main surface that intersects with the corrugation direction of the corrugated section 12. The second flat plate 43 is provided independently for each corrugated section 12, without spanning multiple corrugated sections 12. Note that multiple second flat plates 43 may be provided in one corrugated section 12.

[0058] The first flange 31 is welded to an end face of the corrugated section 11. The first flange 31 is disposed on the inner surface side and the outer surface side of the corrugated section 11.

[0059] The second flanges 41 are welded to the end faces of the corrugated section 12. The second flanges 41 are disposed on the inner surface side and the outer surface side of the corrugated section 12.

[0060] Fifth Embodiment Next, a joining structure 10 according to a fifth embodiment will be described. As shown in Fig. 8, the joining structure 10 according to the fifth embodiment differs from the first embodiment mainly in that a flat first flat plate 33 is provided at the end of the corrugated section 11 in the corrugation direction, and a flat second flat plate 43 is provided at the end of the corrugated section 12 in the corrugation direction.

[0061] The first flange 31 of one corrugated section 11 and the second flange 41 of the other corrugated section 12 are butt-joined to each other by welding.

[0062] According to this embodiment, the first flange 31 of one corrugated section 11 and the second flange 41 of the other corrugated section 12 are butt-joined by welding. This allows the corrugated sections 11, 12 adjacent to each other in the corrugation direction to be joined without overlapping each other. This makes it easier to join the corrugated sections 11, 12 in the corrugation direction.

[0063] Sixth Embodiment Next, a joint structure 10 according to a sixth embodiment will be described. As shown in Fig. 9, the joint structure 10 according to the sixth embodiment is mainly different from the first embodiment in that the corrugated structure 100 is a U-shaped flume having a U-shaped cross section.

[0064] The corrugated unit 2 is a U-shaped flume formed with a U-shaped cross section. The corrugated unit 2 is formed, for example, by providing a first shaped steel 3 and a second shaped steel 4 at both ends in the corrugation direction of a single corrugated section 1 having a U-shaped cross section. Note that the corrugated unit 2 may also be formed with a U-shaped cross section by joining a plurality of corrugated sections 1 in the circumferential direction.

[0065] As shown in Fig. 9(a), a first shaped steel 3 is provided at the end in the corrugation direction of the corrugated section 1. The first shaped steel 3 is formed along the circumferential direction of the corrugated section 1 so as to have a U-shaped cross section.

[0066] As shown in Fig. 9(b), a second shaped steel 4 is provided at the end in the corrugation direction of the corrugated section 1. The second shaped steel 4 is formed along the circumferential direction of the corrugated section 1 so as to have a U-shaped cross section.

[0067] According to this embodiment, the corrugated unit 2 is a U-shaped flume formed with a U-shaped cross section, which allows the corrugated structure 100 to be suitably used as a U-shaped flume.

[0068] The corrugated unit 2 may have a first flat plate 33 and a second flat plate 43 provided at both ends in the corrugation direction of a single corrugated section 1 having a U-shaped cross section, for example.

[0069] The corrugated unit 2 may be formed by overlapping the ends of a plurality of corrugated sections 1, each having a U-shaped cross section, in the corrugation direction and bolting them together. In this case, a first flange 31 is provided at the end of one of the corrugated sections 1 in the corrugation direction, and a second flange 41 is provided at the end of the other of the corrugated sections 1 in the corrugation direction.

[0070] Seventh Embodiment Next, a connection structure 10 according to a seventh embodiment will be described. As shown in Fig. 10, the connection structure 10 according to the seventh embodiment differs from the fifth embodiment mainly in the shapes of the first section steel 3 and the second section steel 4.

[0071] Angle steel or the like having a straight axial direction is used as the first section steel 3. The first section steel 3 is provided at the bottom and both side wall portions of the corrugated section 1 having a U-shaped cross section.

[0072] Angle steel or the like having a straight axial direction is used as the second section steel 4. The second section steel 4 is provided at the bottom and both side wall portions of the corrugated section 1 having a U-shaped cross section.

[0073] Eighth Embodiment Next, a corrugated unit 2 according to the eighth embodiment will be described. As shown in Figures 11(a) and 11(b), the corrugated sections 11 and the first shaped steel 3 used in the corrugated unit 2 according to the eighth embodiment are arranged in a staggered manner, and the corrugated sections 12 and the second shaped steel 4 are also arranged in a staggered manner.

[0074] The first section steel 3 adjacent to each other in the circumferential direction are arranged without any gaps between them. The second section steel 4 adjacent to each other in the circumferential direction are arranged without any gaps between them.

[0075] Although 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. Furthermore, the present invention can be embodied in various novel forms in addition to the above-described embodiments. Therefore, various omissions, substitutions, and modifications are possible in the above-described embodiments without departing from the spirit of the invention. Such novel forms and modifications are included within the scope and spirit of the invention, as well as within the scope of the inventions set forth in the claims and equivalents of the inventions set forth in the claims. [Explanation of symbols]

[0076] 100: Corrugated structure 10: Joint structure of corrugated section 1: Corrugated section 11: Corrugated section 12: Corrugated section 2: Corrugated unit 2-1: Corrugated unit 2-2: Corrugated unit 3: 1st section steel 31: First flange 32:First side plate part 33: 1st plate 4:Second section steel 41: Second flange 42:Second side plate part 43:Second flat plate 5: Hanging hardware 51:H-shaped steel 52: Steel plate 6: Fastening member 7: Fastening member

Claims

1. A joining structure of corrugated sections in which corrugated sections are joined in a corrugation direction, a plurality of corrugated sections adjacent to each other in a corrugation direction; a first flange provided at an end of one of the corrugated sections and having a main surface intersecting the corrugation direction; a second flange provided at an end of the other corrugated section and having a main surface intersecting the corrugation direction, The first flange and the second flange are butt-joined to each other. A corrugated section joint structure characterized by:

2. The first flange and the second flange are butted against each other and joined via a fastening member. The joining structure of corrugated sections according to claim 1, characterized in that

3. a first side plate portion disposed upright relative to the first flange; a second side plate portion disposed upright relative to the second flange, one of the corrugated sections and the first side plate portion is joined via a fastening member, The other corrugated section and the second side plate portion are joined together via a fastening member. The joining structure of corrugated sections according to claim 1, characterized in that

4. The first flange and the second flange are butt-joined to each other by welding. The joining structure of corrugated sections according to claim 1, characterized in that

5. A corrugated structure using corrugated sections, a corrugated unit formed into a circular or U-shaped cross section by a corrugated section; The corrugated unit comprises: the corrugated section; a first flange provided at an end of the corrugated section on one end side of the corrugated unit and having a main surface intersecting a corrugation direction of the corrugated section; a second flange provided at an end of the corrugated section on the other end side of the corrugated unit and having a main surface intersecting the corrugation direction, The first flange is butted against and joined to the second flange of another corrugated unit adjacent to the corrugated unit in the corrugation direction. A corrugated structure characterized by:

6. The corrugated unit is a corrugated pipe formed into a circular cross section by a plurality of the corrugated sections.

6. The corrugated structure according to claim 5,

7. The corrugated unit has a plurality of corrugated sections arranged in a staggered pattern.

7. The corrugated structure according to claim 6,

8. The corrugated unit is provided with a hanging hardware.

6. The corrugated structure according to claim 5,

9. The corrugated unit is a U-shaped flume formed in a U-shaped cross section.

6. The corrugated structure according to claim 5,

10. Used for waterways 6. The corrugated structure according to claim 5,

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