JP7344056B2 - waterway - Google Patents

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JP7344056B2
JP7344056B2 JP2019163726A JP2019163726A JP7344056B2 JP 7344056 B2 JP7344056 B2 JP 7344056B2 JP 2019163726 A JP2019163726 A JP 2019163726A JP 2019163726 A JP2019163726 A JP 2019163726A JP 7344056 B2 JP7344056 B2 JP 7344056B2
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waterway
water channel
main body
flange portion
steel plate
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JP2021042539A (en
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剛男 原田
幸司 吉田
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Nippon Steel Metal Products Co Ltd
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Nippon Steel Metal Products Co Ltd
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Description

本発明は、水路に関する。 The present invention relates to waterways.

従来、灌漑用水路、農業用水路、工業用水路等の水路が知られている。このような水路は、Ｕ字状の鋼板が用いられて、地面に掘られた溝に設置される。水路に関する技術としては、特許文献１～５の開示技術が提案されている。 Conventionally, waterways such as irrigation canals, agricultural canals, and industrial canals have been known. Such a waterway uses a U-shaped steel plate and is installed in a trench dug in the ground. As technologies related to waterways, the technologies disclosed in Patent Documents 1 to 5 have been proposed.

特許文献１のコルゲートフリュームは、撥水性塗装を施した横断面が頂部とそれに続く傾斜部からなる形状の切梁を、頂部を上方にしてコルゲートフリューム本体の上縁部に取付けたことを特徴とする。 The corrugated flume of Patent Document 1 is characterized in that a cross section coated with a water-repellent coating has a cross section consisting of a top and an inclined part continuing from the top, and is attached to the upper edge of the corrugate flume body with the top facing upward. do.

特許文献２の波付鋼板の設計方法は、波の深さがＨの波形の波付鋼板からなる、両側壁と底部とでＵ字形をなし底部直線部長さｄの波付鋼板フリュームを構成する波形鋼板の波形状を設計する方法である。 The design method of a corrugated steel plate in Patent Document 2 is to construct a corrugated steel plate flume, which is made of a corrugated steel plate with a wave depth of H, and has a U-shape with both side walls and a bottom part, and has a straight bottom part length d. This is a method of designing the wave shape of a corrugated steel plate.

特許文献３の角度部用ステンレス水路材の製造方法は、流路方向に波形断面をなす波付けステンレス材からなる複数のステンレス水路材を流路方向に連結して構成するステンレス水路における角度部用のステンレス水路材を製造する方法である。 The method for manufacturing a stainless steel channel material for an angle section in Patent Document 3 is a method for manufacturing a stainless steel channel material for an angle section in a stainless steel channel constructed by connecting a plurality of stainless steel channel materials made of corrugated stainless steel material with a corrugated cross section in the flow direction. This is a method of manufacturing stainless steel waterway material.

特許文献４の波型鋼板製水路部材は、流路方向に沿った断面が波形に形成された波付け鋼材を用いた波型鋼板製水路部材であって、波付け鋼材は、ステンレスである。 The corrugated steel plate water channel member of Patent Document 4 is a corrugated steel plate water channel member using a corrugated steel material whose cross section along the flow path direction is formed into a wave shape, and the corrugated steel material is stainless steel.

特許文献５の水路は、波付け方向と直交する方向にＵ字状に折り曲げられた波形鋼板からなる水路本体と、水路本体の上縁部に、水路本体の長手方向に沿って取り付けられた腹起し材と、腹起し材間に取り付けられた切梁とから構成される水路において、腹起し材は、緩衝部材を介して水路本体に取り付けられていることを特徴とする。 The waterway of Patent Document 5 includes a waterway body made of a corrugated steel plate bent in a U-shape in a direction perpendicular to the corrugation direction, and a bellows attached to the upper edge of the waterway body along the longitudinal direction of the waterway body. The waterway is composed of raised members and struts attached between the raised members, and is characterized in that the raised members are attached to the water channel body via a buffer member.

実開平１－１６７４８７号公報Utility Model Publication No. 1-167487 国際公開２０１３／２０９５号公報International Publication No. 2013/2095 特開２０１５－１６９０５６号公報Japanese Patent Application Publication No. 2015-169056 特開２０１８－１６２５９４号公報Japanese Patent Application Publication No. 2018-162594 特開２０１８－７６６５９号公報Japanese Patent Application Publication No. 2018-76659

特許文献１～５の開示技術では、Ｕ字状の鋼板の上端部に腹起し材が取り付けられ、更に腹起し材同士に切梁が取り付けられる。このような鋼板が用いられる水路は、液状化や不同沈下等が発生しやすい軟弱地盤に設置され、軟弱地盤の変動に追従できるように、比較的撓みやすい板厚の薄い鋼板が用いられる。そして、腹起し材と切梁とにより剛性を高めることで、鋼板の撓みを低減させる。 In the techniques disclosed in Patent Documents 1 to 5, a raised member is attached to the upper end of a U-shaped steel plate, and struts are further attached to the raised 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 fluctuations of the soft ground. The bending of the steel plate is reduced by increasing the rigidity with the raised members and struts.

ところで、豪雪地帯に水路を構築する場合、切梁に積雪荷重が作用してしまう。積雪荷重による影響を低減させるため、切梁の本数を減らして切梁同士の間隔を大きくし、腹起し材の断面積を増加させることもある。しかしながら、板厚の薄い波形鋼板の上端部に、断面積の大きい腹起し材が連結されることにより、波形鋼板の側壁部分には大きな荷重が作用することになる。従来の水路９では、図１０に示すように、波形鋼板９２と腹起し材９３と連結する場合、波形鋼板９２の上下方向に延びる側壁部分９２１にアングル材９６を介して腹起し材９３が連結される。板厚の薄い波形鋼板９２の側壁部分９２１には、アングル材９６と連結するためのボルト孔９４が形成され、このボルト孔９４に水平方向に延びるボルト９７が貫通されてアングル材９６と波形鋼板９２とがボルト接合される。このボルト９７は、腹起し材９３の下側に配置され、流下方向に所定の間隔を空けて設けられる。このため、ボルト９７には、腹起し材９３の荷重によるせん断力に加えて、不同沈下等に追従するように波形鋼板の変形に伴うせん断力が作用することになる。その結果、側壁部分９２１のボルト孔９４から波形鋼板９２が破断するおそれがあり、腹起し材９３を安定して保持することができず、水路としての機能を発揮できないおそれがあった。 By the way, when constructing a waterway in an area with heavy snowfall, the snow load acts on the struts. In order to reduce the effects of snow loads, the number of struts may be reduced, the distance between them may be increased, and the cross-sectional area of the raised material may be increased. However, since a raised member having a large cross-sectional area is connected to the upper end of the thin corrugated steel sheet, a large load is applied to the side wall portion of the corrugated steel sheet. In the conventional waterway 9, as shown in FIG. 10, when connecting the corrugated steel plate 92 and the raised material 93, the raised material 93 is attached to the vertically extending side wall portion 921 of the corrugated steel plate 92 via the angle member 96. Concatenated. A bolt hole 94 for connecting with the angle member 96 is formed in the side wall portion 921 of the thin corrugated steel plate 92, and a bolt 97 extending in the horizontal direction is passed through this bolt hole 94 to connect the angle member 96 and the corrugated steel plate. 92 are bolted together. The bolts 97 are arranged below the raised member 93 and are spaced apart from each other at predetermined intervals in the downstream direction. Therefore, in addition to the shearing force due to the load of the raised member 93, shearing force due to the deformation of the corrugated steel plate is applied to the bolt 97 so as to follow uneven settlement or the like. As a result, there was a risk that the corrugated steel plate 92 would break from the bolt hole 94 of the side wall portion 921, and the raised member 93 could not be stably held, so that it could not function as a waterway.

そこで、本発明は、上述した問題点に鑑みて案出されたものであり、その目的とするところは、腹起し材を安定して保持することが可能となる水路を提供することにある。 Therefore, the present invention has been devised in view of the above-mentioned problems, and its purpose is to provide a waterway that can stably hold a raised material. .

第１発明に係る水路は、鋼板が用いられ、一対の側壁部と底部とによりＵ字状に形成される水路本体と、一対の前記側壁部の上端部に設けられ、前記水路本体の延伸方向に直交する幅方向に離間させて設けられる腹起し材と、前記幅方向に離間した前記腹起し材同士を連結する切梁と、を備え、前記水路本体は、一対の前記側壁部のそれぞれの上端部が鋼板が折り曲げられて形成されるフランジ部を有し、前記腹起し材は、前記フランジ部に載置され、前記フランジ部とボルト接合され、前記水路本体は、前記腹起し材と前記切梁とが連結されることで、水平方向に対して傾斜して折り曲げて形成される前記フランジ部が水平方向に沿って延びるものとなることを特徴とする。 The waterway according to the first invention includes a waterway body that is made of a steel plate and is formed in a U-shape by a pair of side walls and a bottom, and is provided at an upper end of the pair of side walls, and is provided in an extending direction of the waterway body. The waterway main body includes raised members provided spaced apart in the width direction perpendicular to the width direction, and struts connecting the raised members spaced apart in the width direction, and the waterway main body includes Each upper end portion has a flange portion formed by bending a steel plate, the rib material is placed on the flange portion and bolted to the flange portion , and the water channel body is attached to the rib portion. The flange portion, which is formed by bending at an angle with respect to the horizontal direction, extends along the horizontal direction due to the connection of the strut and the strut.

第２発明に係る水路は、第１発明において、前記水路本体は、一方の前記フランジ部と他方の前記フランジ部とが前記水路本体の外側方向に向けて一対の前記側壁部のそれぞれの上端部が折り曲げられて形成されることを特徴とする。 In the waterway according to a second aspect of the invention, in the first invention, the waterway body has one of the flange portions and the other of the flange portions facing toward the outside of the waterway body at the upper end of each of the pair of side wall portions. It is characterized by being formed by being bent.

第３発明に係る水路は、第１発明において、前記水路本体は、一方の前記フランジ部と他方の前記フランジ部とが前記水路本体の内側方向に向けて一対の前記側壁部のそれぞれの上端部が折り曲げられて形成されることを特徴とする。 In the waterway according to a third aspect of the invention, in the first invention, the waterway body has one of the flange portions and the other of the flange portions facing toward the inner side of the waterway body at the upper end of each of the pair of side wall portions. It is characterized by being formed by being bent.

本発明によれば、腹起し材を安定して保持することが可能となる水路を提供することができる。 According to the present invention, it is possible to provide a water channel that can stably hold the lining material.

図１は、第１実施形態に係る水路の一例を示す斜視図である。FIG. 1 is a perspective view showing an example of a waterway according to the first embodiment. 図２は、第１実施形態に係る水路の一例を示す平面図である。FIG. 2 is a plan view showing an example of the waterway according to the first embodiment. 図３は、第１実施形態に係る水路の一例を示す正面図である。FIG. 3 is a front view showing an example of the waterway according to the first embodiment. 図４は、図３のａ部拡大図である。FIG. 4 is an enlarged view of part a in FIG. 3. 図５は、図３のＡ－Ａ断面図である。FIG. 5 is a sectional view taken along line AA in FIG. 図６は、切梁が連結される前の第２実施形態に係る水路の一例を示す斜視図である。FIG. 6 is a perspective view showing an example of the waterway according to the second embodiment before the struts are connected. 図７（ａ）は、図６のｂ部の拡大図であり、図７（ｂ）は、切梁を連結した状態の第２実施形態に係る水路を示す拡大図である。FIG. 7(a) is an enlarged view of part b of FIG. 6, and FIG. 7(b) is an enlarged view of the waterway according to the second embodiment with the struts connected. 図８は、第３実施形態に係る水路の一例を示す正面図である。FIG. 8 is a front view showing an example of a waterway according to the third embodiment. 図９は、図８のｃ部拡大図である。FIG. 9 is an enlarged view of part c in FIG. 8. 従来の水路における波形鋼板と腹起し材との連結部を示す図である。It is a figure which shows the connection part of the corrugated steel plate and the raised material in the conventional waterway.

以下、本発明を適用した水路を実施するための形態について、図面を参照しながら詳細に説明する。 EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the waterway to which this invention is applied is demonstrated in detail, referring drawings.

（第１実施形態）
図１は、第１実施形態に係る水路１の一例を示す斜視図である。図２は、第１実施形態に係る水路１の一例を示す平面図である。図３は、第１実施形態に係る水路１の一例を示す正面図である。以下、上下方向Ｚとし、上下方向Ｚに直交する方向を延伸方向Ｘとし、上下方向Ｚと延伸方向Ｘに直交する方向を幅方向Ｙとする。 (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 the waterway 1 according to the first embodiment. FIG. 3 is a front view showing an example of the waterway 1 according to the first embodiment. Hereinafter, it will be referred to as an up-down direction Z, a direction orthogonal to the up-down direction Z will be referred to as a stretching direction X, and a direction orthogonal to the up-down direction Z and the stretching direction X will be referred to as a width direction Y.

水路１は、不同沈下や液状化等が発生しやすい軟弱地盤に設けられる。水路１は、豪雪地帯等に設けられる。水路１は、水路本体２と、腹起し材３と、切梁４と、を備える。 The waterway 1 is provided on soft ground where uneven settlement, liquefaction, etc. are likely to occur. The waterway 1 is provided in a heavy snowfall area or the like. The waterway 1 includes a waterway main body 2, a raised member 3, and a strut 4.

水路本体２は、鋼板が用いられる。鋼板は、コルゲート鋼板等の波形鋼板が用いられる。水路本体２は、一対の側壁部２１、２１と、一対の側壁部２１、２１を繋ぐ底部２２とを有する。水路本体２は、一対の側壁部２１、２１と、底部２２とにより延伸方向Ｘに直交する断面においてＵ字状に形成される。 The waterway main body 2 is made of a steel plate. As the steel plate, a corrugated steel plate such as a corrugated steel plate is used. The water channel main body 2 has a pair of side wall parts 21, 21 and a bottom part 22 that connects the pair of side wall parts 21, 21. The water channel main body 2 is formed into a U-shape in a cross section perpendicular to the extending direction X by a pair of side wall parts 21, 21 and a bottom part 22.

水路本体２は、延伸方向Ｘに向けて延びて形成される。水路本体２は、Ｌ字状に形成された２枚の鋼板が、底部２２でボルト接合されて断面Ｕ字状に形成される。水路本体２は、延伸方向Ｘに隣接する鋼板同士が互いにボルト接合された鋼板継手部２５を有する。水路本体２は、断面Ｕ字状に形成された鋼板が用いられ、延伸方向Ｘにボルト接合されて複数連結され、延伸方向Ｘに向けて延びて形成されてもよい。 The water channel main body 2 is formed to extend in the extending direction X. The water channel body 2 is formed by two L-shaped steel plates bolted together at the bottom 22 to have a U-shaped cross section. The water channel main body 2 has a steel plate joint part 25 in which steel plates adjacent to each other in the extending direction X are bolted to each other. The water channel main body 2 may be formed by using a steel plate having a U-shaped cross section, and may be formed by connecting a plurality of steel plates in the extending direction X by bolting them, and extending in the extending direction X.

図４は、図３のａ部拡大図である。水路本体２は、側壁部２１の上端部２１ａに、鋼板が折り曲げられて形成されたフランジ部２３を有する。一方のフランジ部２３と幅方向Ｙに離間した他方のフランジ部２３とは、水路本体２の外側方向に、向けて折り曲げられて形成される。フランジ部２３は、鋼板が水平方向に沿って延びて形成される。フランジ部２３は、側壁部２１に近接する側の端部を基端部２３ａとし、側壁部２１から離間する側の端部を先端部２３ｂとしたとき、基端部２３ａと先端部２３ｂとが上下方向Ｚにおいて略同じ高さに配置される。フランジ部２３は、貫通孔２４が形成され、ボルト８が貫通される。 FIG. 4 is an enlarged view of part a in FIG. 3. The water channel 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. One flange portion 23 and the other flange portion 23 spaced apart in the width direction Y are formed by being bent toward the outside of the water channel body 2. The flange portion 23 is formed by a steel plate extending in the horizontal direction. The flange portion 23 has a proximal end 23a at the end close to the side wall 21, and a distal end 23b at the end remote from the side wall 21.The proximal end 23a and the distal end 23b are They are arranged at substantially the same height in the vertical direction Z. The flange portion 23 has a through hole 24 formed therein, through which the bolt 8 passes.

腹起し材３は、図３に示すように、幅方向Ｙに離間して一対となって、それぞれフランジ部２３に載置される。腹起し材３は、例えばＨ形鋼が用いられる。腹起し材３は、断面Ｌ字状に形成されるアングル材、断面コの字状に形成されるＣ形鋼等であってもよい。 As shown in FIG. 3, the lining members 3 are placed in pairs on the flange portions 23, spaced apart in the width direction Y. For example, H-beam steel is used as the raised material 3. The raised material 3 may be an angle material having an L-shaped cross section, a C-shaped steel having a U-shaped cross section, or the like.

腹起し材３は、図４に示すように、貫通孔３１が形成され、ボルト８が貫通される。腹起し材３は、フランジ部２３に載置され、貫通孔２４と貫通孔３１とに貫通されるボルト８により、水路本体２のフランジ部２３とボルト接合される。 As shown in FIG. 4, the upholstery material 3 has a through hole 31 formed therein, through which the bolt 8 passes. The raised member 3 is placed on the flange portion 23 and bolted to the flange portion 23 of the water channel body 2 by bolts 8 passed through the through holes 24 and 31.

図５は、図３のＡ－Ａ断面図である。切梁４は、幅方向Ｙに離間した一対の腹起し材３、３同士を連結する。切梁４は、例えば鋼管が用いられる。切梁４は、Ｌ字状に形成されるアングル材、角形鋼管、丸鋼、Ｈ鋼等であってもよい。切梁４は、板材からなる取付プレート４１を介して腹起し材３にボルト接合される。 FIG. 5 is a sectional view taken along line AA in FIG. The strut 4 connects a pair of raised members 3, 3 spaced apart in the width direction Y. For example, a steel pipe is used for the strut 4. The strut 4 may be an L-shaped angle member, a square steel pipe, a round steel, an H steel, or the like. The strut 4 is bolted to the upright member 3 via a mounting plate 41 made of a plate material.

本実施形態によれば、鋼板が用いられ、一対の側壁部と底部とによりＵ字状に形成される水路本体２と、水路本体２の延伸方向Ｘに直交する幅方向Ｙに離間させて一対の側壁部２１の上端部２１ａに設けられる腹起し材３と、幅方向Ｙに離間した腹起し材３同士を連結する切梁４と、を備え、水路本体２は、側壁部２１の上端部２１ａに、鋼板が折り曲げられて形成されるフランジ部２３を有し、腹起し材３は、フランジ部２３に載置され、フランジ部２３とボルト接合される。すなわち、水路本体２と腹起し材３との間にアングル材等の部材を介在させることなく、水路本体２のフランジ部２３と腹起し材３とが直接ボルト８によりボルト接合されることとなる。 According to this embodiment, a steel plate is used, and the water channel main body 2 is formed into a U-shape by a pair of side walls and a bottom part, and a pair of water channel main bodies 2 are spaced apart in the width direction Y perpendicular to the extending direction X of the water channel main body 2. The channel main body 2 includes a raised member 3 provided on the upper end 21a of the side wall portion 21 and a strut 4 that connects the raised members 3 spaced apart in the width direction Y. The upper end portion 21a has a flange portion 23 formed by bending a steel plate, and the raised material 3 is placed on the flange portion 23 and bolted to the flange portion 23. That is, the flange portion 23 of the water channel body 2 and the raised material 3 are directly bolted together with the bolts 8 without intervening a member such as an angle material between the water channel main body 2 and the raised material 3. .

これにより、フランジ部２３にのみボルト８が貫通される貫通孔２４を形成すればよく、側壁部２１の上下方向Ｚに延びる部分にアングル材等を固定するための孔を形成する必要がない。このため、水路本体２自体の耐力を向上させることができる。 Thereby, it is only necessary to form the through hole 24 through which the bolt 8 passes through the flange portion 23, and there is no need to form a hole for fixing an angle member or the like in a portion of the side wall portion 21 extending in the vertical direction Z. Therefore, the strength of the water channel body 2 itself can be improved.

そして、不同沈下等の地盤の変動に伴って側壁部２１が変形したとしても、側壁部２１の上下方向Ｚに延びる部分にアングル材等を固定するための孔がないことから、水路本体２の側壁部２１の破断等を抑制することができる。また、地盤が変動したとき、フランジ部２３の変形は、側壁部２１の変形よりも小さいため、ボルト８が腹起し材３とフランジ部２３との間でのせん断力に抵抗でき、フランジ部２３の破断等を抑制できる。その結果、腹起し材３を安定して保持することが可能となり、水路としての機能を発揮させることができる。 Even if the side wall portion 21 is deformed due to ground fluctuations such as uneven settlement, the waterway main body 2 is Breakage of the side wall portion 21 can be suppressed. Further, when the ground changes, the deformation of the flange portion 23 is smaller than the deformation of the side wall portion 21, so the bolt 8 can resist the shearing force between the upright member 3 and the flange portion 23, and the flange portion 23 can be suppressed from breaking. As a result, it becomes possible to stably hold the lining material 3, and it can function as a waterway.

また、本実施形態によれば、水路本体２のフランジ部２３と腹起し材３とが直接ボルト８によりボルト接合されることとなる。これにより、水路本体２と腹起し材３との間にアングル材等の部材を介在させる必要がないため、水路本体２と腹起し材３とを連結する作業を短時間で行うことができる。このため、施工性を向上させることが可能となる。 Further, according to this embodiment, the flange portion 23 of the water channel body 2 and the raised member 3 are directly bolted together with the bolts 8. Thereby, since there is no need to interpose a member such as an angle member between the water channel body 2 and the raised material 3, the work of connecting the water channel main body 2 and the raised material 3 can be performed in a short time. Therefore, it becomes possible to improve workability.

更に、本実施形態によれば、水路本体２は、一方のフランジ部２３と他方のフランジ部２３とが互いに遠ざかる方向に向けて鋼板が折り曲げられて形成される。これにより、水路本体２を上下方向Ｚに積み重ねることが可能となる。このため、水路１を構築する際、水路本体２を上下方向Ｚに積み重ねて運搬することができ、施工性を向上させることが可能となる。 Further, according to the present embodiment, the water channel main body 2 is formed by bending a steel plate in a direction in which one flange portion 23 and the other flange portion 23 move away from each other. This allows the water channel bodies 2 to be stacked in the vertical direction Z. Therefore, when constructing the waterway 1, the waterway bodies 2 can be stacked in the vertical direction Z and transported, making it possible to improve construction efficiency.

（第２実施形態）
図６は、切梁４が連結される前の第２実施形態に係る水路１の一例を示す斜視図である。図７（ａ）は、図６のｂ部の拡大図であり、図７（ｂ）は、切梁４を連結した状態の第２実施形態に係る水路１を示す拡大図である。図７（ｂ）は、図６のｂ部拡大図に対応する。 (Second embodiment)
FIG. 6 is a perspective view showing an example of the waterway 1 according to the second embodiment before the struts 4 are connected. FIG. 7(a) is an enlarged view of part b in FIG. 6, and FIG. 7(b) is an enlarged view showing the waterway 1 according to the second embodiment with the struts 4 connected. FIG. 7(b) corresponds to an enlarged view of part b in FIG.

第２実施形態に係る水路１では、水路本体２は、腹起し材３と切梁４とが連結されることで、鋼板が水平方向に対して傾斜して折り曲げて形成されるフランジ部２３が水平方向に沿って延びるものとなる点で、第１実施形態に係る水路１と相違する。 In the waterway 1 according to the second embodiment, the waterway main body 2 has a flange portion 23 formed by bending the steel plate at an angle with respect to the horizontal direction by connecting the raised member 3 and the strut 4. The water channel 1 is different from the water channel 1 according to the first embodiment in that the water channel 1 extends in the horizontal direction.

すなわち、第２実施形態における水路本体２では、図６及び図７（ａ）に示すように、腹起し材３と切梁４とが連結される前において、フランジ部２３は、先端部２３ｂが基端部２３ａよりも上下方向Ｚにおいて上側に配置されるように、鋼板が水平方向に対して傾斜して折り曲げて形成される。フランジ部２３は、互いに遠ざかる方向に向けて鋼板が折り曲げられて形成される。 That is, in the water channel main body 2 in the second embodiment, as shown in FIGS. 6 and 7(a), before the raised member 3 and the strut 4 are connected, the flange portion 23 is connected to the tip portion 23b. The steel plate is formed by bending the steel plate at an angle with respect to the horizontal direction so that the base end portion 23a is disposed above the base end portion 23a in the vertical direction Z. The flange portions 23 are formed by bending steel plates in directions that move away from each other.

そして、水路本体２は、図７（ｂ）に示すように、幅方向Ｙに離間した一対の腹起し材３を切梁４により連結したとき、腹起し材３により水平方向に対して傾斜して形成されたフランジ部２３が、水平方向に沿って延びるものとなる。 As shown in FIG. 7(b), when a pair of raised members 3 spaced apart in the width direction Y are connected by a strut 4, the waterway main body 2 is constructed in a horizontal direction by the raised members 3. The flange portion 23 formed to be inclined extends along the horizontal direction.

本実施形態によれば、水路本体２は、腹起し材３と切梁４とが連結されることで、鋼板が水平方向に対して傾斜して折り曲げて形成されるフランジ部２３が水平方向に沿って延びるものとなる。これにより、フランジ部２３は水平方向に対して傾斜した元の形状に戻ろうとする力が作用する。このため、幅方向Ｙに離間した一対の腹起し材３には互いに水路本体２の内側方向に力が作用して、この力が切梁４に伝達されることとなる。その結果、一対の腹起し材３が切梁４により一定に保持されるため、腹起し材３をより安定して保持することが可能となる。 According to this embodiment, the waterway body 2 has a flange portion 23 formed by bending the steel plate at an angle with respect to the horizontal direction due to the connection of the raised member 3 and the strut 4. It will extend along the As a result, a force acts on the flange portion 23 to return it to its original shape inclined with respect to the horizontal direction. Therefore, a force acts on the pair of raised members 3 spaced apart in the width direction Y in the inner direction of the channel body 2, and this force is transmitted to the strut 4. As a result, the pair of ribs 3 are held constant by the struts 4, making it possible to hold the ribs 3 more stably.

（第３実施形態）
図８は、第３実施形態に係る水路１の一例を示す正面図である。図９は、図８のｃ部拡大図である。 (Third embodiment)
FIG. 8 is a front view showing an example of the waterway 1 according to the third embodiment. FIG. 9 is an enlarged view of part c in FIG. 8.

第３実施形態に係る水路１では、水路本体２は、一方のフランジ部２３と他方のフランジ部２３とが互いに水路本体２の内側方向に向けて鋼板が折り曲げられて形成される点で、第１実施形態に係る水路１と相違する。 In the waterway 1 according to the third embodiment, the waterway main body 2 has the following features: one flange portion 23 and the other flange portion 23 are formed by bending steel plates toward the inner side of the waterway main body 2. This is different from the waterway 1 according to the first embodiment.

本実施形態によれば、水路本体２は、一方のフランジ部２３と他方のフランジ部２３とが互いに水路本体２の内側方向に向けて鋼板が折り曲げられて形成される。これにより、腹起し材３の荷重の中心が、水路本体２の内側に配置されることとなる。このため、一対の側壁部２１同士が互いに水路本体２の内側方向に向けて移動しようとするのに伴って作用する、幅方向Ｙに離間した一対の腹起し材３同士が互いに水路本体２の内側方向の力に、切梁４が抵抗するものとなる。その結果、一対の腹起し材３が切梁４により一定に保持されるため、腹起し材３をより安定して保持することが可能となる。 According to the present embodiment, the water channel main body 2 is formed by bending steel plates such that one flange portion 23 and the other flange portion 23 are mutually bent toward the inner side of the water channel main body 2. Thereby, the center of the load of the raised material 3 is placed inside the water channel main body 2. Therefore, as the pair of side wall portions 21 try to move toward the inner side of the waterway main body 2, the pair of raised members 3 spaced apart in the width direction Y move toward the waterway main body 2. The strut 4 resists the force in the inward direction. As a result, the pair of ribs 3 are held constant by the struts 4, making it possible to hold the ribs 3 more stably.

以上、この発明の実施形態のいくつかを説明したが、これらの実施形態は例として提示したものであり、発明の範囲を限定することは意図していない。また、これらの実施形態は、適宜組み合わせて実施することが可能である。さらに、この発明は、上記いくつかの実施形態の他、様々な新規な形態で実施することができる。したがって、上記いくつかの実施形態のそれぞれは、この発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更が可能である。このような新規な形態や変形は、この発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明、及び特許請求の範囲に記載された発明の均等物の範囲に含まれる。 Although some 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. Moreover, these embodiments can be implemented in combination as appropriate. Furthermore, this invention can be implemented in various new forms in addition to the several embodiments described above. Therefore, various omissions, substitutions, and changes can be made to each of the several embodiments described above without departing from the gist of the present invention. Such novel forms and modifications are included within the scope and gist of the present invention, as well as within the scope of the claimed inventions and equivalents of the claimed inventions.

１ ：水路
２ ：水路本体
２１ ：側壁部
２１ａ ：上端部
２２ ：底部
２３ ：フランジ部
２３ａ ：基端部
２３ｂ ：先端部
２４ ：貫通孔
２５ ：鋼板継手部
３ ：腹起し材
３１ ：貫通孔
４ ：切梁
４１ ：取付プレート
８ ：ボルト
９ ：水路
９２ ：波形鋼板
９２１ ：側壁部分
９３ ：腹起し材
９４ ：ボルト孔
９６ ：アングル材
９７ ：ボルト
Ｘ ：延伸方向
Ｙ ：幅方向
Ｚ ：上下方向 1 : Water channel 2 : Water channel body 21 : Side wall part 21a : Upper end part 22 : Bottom part 23 : Flange part 23a : Base end part 23b : Tip part 24 : Through hole 25 : Steel plate joint part 3 : Raising material 31 : Through hole 4: Strut beam 41: Mounting plate 8: Bolt 9: Channel 92: Corrugated steel plate 921: Side wall portion 93: Raised material 94: Bolt hole 96: Angle material 97: Bolt X: Extending direction Y: Width direction Z: Up and down direction

Claims (3)

鋼板が用いられ、一対の側壁部と底部とによりＵ字状に形成される水路本体と、
一対の前記側壁部の上端部に設けられ、前記水路本体の延伸方向に直交する幅方向に離間させて設けられる腹起し材と、
前記幅方向に離間した前記腹起し材同士を連結する切梁と、を備え、
前記水路本体は、一対の前記側壁部のそれぞれの上端部が折り曲げられて形成されるフランジ部を有し、
前記腹起し材は、前記フランジ部に載置され、前記フランジ部とボルト接合され、
前記水路本体は、前記腹起し材と前記切梁とが連結されることで、水平方向に対して傾斜して折り曲げて形成される前記フランジ部が水平方向に沿って延びるものとなること
を特徴とする水路。 A water channel body made of a steel plate and formed into a U-shape by a pair of side walls and a bottom;
Raising members provided at the upper ends of the pair of side walls and spaced apart in a width direction perpendicular to the extending direction of the water channel body;
comprising a strut connecting the raised members spaced apart in the width direction,
The water channel main body has a flange portion formed by bending an upper end portion of each of the pair of side wall portions,
The raised material is placed on the flange portion and bolted to the flange portion ,
In the waterway main body, the flange portion formed by bending at an angle with respect to the horizontal direction extends in the horizontal direction by connecting the raised material and the strut.
A waterway characterized by 前記水路本体は、一方の前記フランジ部と他方の前記フランジ部とが前記水路本体の外側方向に向けて一対の前記側壁部のそれぞれの上端部が折り曲げられて形成されること
を特徴とする請求項１記載の水路。 A claim characterized in that the water channel main body is formed by bending the upper end portions of the pair of side wall portions of one of the flange portions and the other of the flange portions toward the outside of the water channel main body. The waterway described in item 1. 前記水路本体は、一方の前記フランジ部と他方の前記フランジ部とが前記水路本体の内側方向に向けて一対の前記側壁部のそれぞれの上端部が折り曲げられて形成されること
を特徴とする請求項１記載の水路。 The water channel main body is characterized in that one of the flange portions and the other flange portion are formed by bending the upper ends of each of the pair of side wall portions toward the inner side of the water channel main body. The waterway described in item 1.
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