JP2978126B2 - How to construct an open channel - Google Patents
How to construct an open channelInfo
- Publication number
- JP2978126B2 JP2978126B2 JP8336660A JP33666096A JP2978126B2 JP 2978126 B2 JP2978126 B2 JP 2978126B2 JP 8336660 A JP8336660 A JP 8336660A JP 33666096 A JP33666096 A JP 33666096A JP 2978126 B2 JP2978126 B2 JP 2978126B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- open channel
- opening
- foundation
- concrete foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Foundations (AREA)
- Sewage (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地下水位の高い場
所に農業用水路、農業排水路、雨水排水路などとして構
築され、水路が地下水により浮上するおそれのある開水
路の構築方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an open channel which is constructed as an agricultural channel, an agricultural drainage channel, a rainwater drainage channel or the like in a place with a high groundwater level, and in which the channel may rise due to groundwater. .
【０００２】[0002]
【従来の技術】農業用水路などは開水路として構築され
る場合が多く、しかも、地下水位の高い場所に構築され
る場合が多い。そのため、開水路内の水位が低下すると
開水路が浮上するおそれが大きい。この開水路の浮上を
防止するため、(1) 開水路の側壁に逆流防止弁付きの透
孔を設けておき、開水路外の地下水を開水路内に流入さ
せて開水路内の水位を一定以上に保持する、(2) 開水路
の上をプレキャスト鉄筋コンクリート製の蓋で覆い蓋の
重量で地下水の浮力に抵抗する、という方法が一般に採
用されている。2. Description of the Related Art Agricultural waterways and the like are often constructed as open channels, and are often constructed in places with high groundwater levels. Therefore, when the water level in the open channel lowers, the open channel is likely to float. In order to prevent the floating of the open channel, (1) a through hole with a check valve is provided on the side wall of the open channel, and the groundwater outside the open channel flows into the open channel to keep the water level in the open channel constant. (2) The method of covering the open channel with a precast reinforced concrete lid and resisting the buoyancy of groundwater by the weight of the lid is generally adopted.
【０００３】[0003]
【発明が解決しようとする課題】従来の(1) の方法では
開水路内の水に開水路外の地下水が混入するので、本来
開水路を流すべき水の流量に比べて大量の水を流すこと
ができるような大きな開渠を使用する必要があるばかり
でなく、開水路を流すべき水本来の水質を維持できな
い、(2) の方法では開水路で十分であるのに、止むを得
ず蓋で覆われることとなり、施工費が高くなるばかりで
なく、水路の監視や維持が十分行えない、という問題が
残されている。In the conventional method (1), since a large amount of water flows compared to the flow rate of the water that should flow through the open channel because the groundwater outside the open channel mixes with the water in the open channel. Not only is it necessary to use a large open channel that can handle the open channel, but it is not possible to maintain the original water quality of the water to flow through the open channel. Since it is covered with a lid, not only the construction cost becomes high, but also the problem that the monitoring and maintenance of the water channel cannot be sufficiently performed remains.
【０００４】[0004]
【課題を解決するための手段】本願発明は、開水路を構
成するプレキャスト鉄筋コンクリート開渠を基礎コンク
リートに一体化して開水路全体の重量を増加することに
よって開水路の浮上を防止することを目的とするもので
ある。SUMMARY OF THE INVENTION An object of the present invention is to prevent floating of an open channel by increasing the weight of the entire open channel by integrating the precast reinforced concrete open channel constituting the open channel with the foundation concrete. Is what you do.
【０００５】即ち、本願発明は、（Ａ）鉄筋の露出した
開口部を持つ鉄筋コンクリート基礎を場所打ち鉄筋コン
クリートにより構築し、（Ｂ）底版に鉄筋の露出した開
口部を持つプレキャスト鉄筋コンクリート開渠を、両者
の開口部の位置を合致させて、前記コンクリート基礎の
上に載置し、（Ｃ）前記プレキャスト鉄筋コンクリート
開渠の開口部の鉄筋と前記鉄筋コンクリート基礎の開口
部の鉄筋とを別の組立鉄筋により接続した後、両者の開
口部にコンクリートを充填して前記プレキャスト鉄筋コ
ンクリート開渠と前記鉄筋コンクリート基礎とを一体化
することを特徴とする開水路の構築方法である。That is, the present invention provides (A) a reinforced concrete foundation having an exposed opening of a reinforcing steel by cast-in-place reinforced concrete; (C) connecting the reinforcing steel at the opening of the precast reinforced concrete open channel with the reinforcing steel at the opening of the reinforced concrete foundation by another assembled reinforcing steel. Then, concrete is filled into both openings, and the precast reinforced concrete culvert and the reinforced concrete foundation are integrated, thereby providing a method of constructing an open channel.
【０００６】本願発明の第１の要点は、補強筋である鉄
筋が露出した開口部を底版に設けたプレキャスト鉄筋コ
ンクリート開渠を開水路の構成部材として用いる点であ
る。A first point of the present invention is that a precast reinforced concrete open channel provided with an opening in which a reinforcing bar as a reinforcing bar is exposed in a bottom plate is used as a component of the open channel.
【０００７】本願発明の第２の要点は、上記形状のプレ
キャスト鉄筋コンクリート開渠を、上記開口部を利用し
て鉄筋コンクリート基礎と一体化する点である。A second point of the present invention is that the precast reinforced concrete open channel having the above shape is integrated with the reinforced concrete foundation using the opening.
【０００８】開渠を鉄筋コンクリート基礎と一体化する
方式としては、鉄筋コンクリート基礎の構築に際して、
開渠の開口部に対応する位置に、開渠と同様に開口部を
設け、鉄筋コンクリート基礎の補強鉄筋を露出させてお
き、開渠を載置した後、露出している開渠の補強鉄筋と
基礎の補強鉄筋とを別の組立鉄筋により接続し、両者の
開口部にコンクリートを充填する方式が採られる。かく
して、開口部に配筋されている鉄筋と開口部に充填され
たコンクリートによりに開渠と鉄筋コンクリート基礎と
は一体化する。[0008] The method of integrating the open channel with the reinforced concrete foundation is as follows.
At the position corresponding to the opening of the open channel, an opening is provided in the same way as the open channel, the reinforcing steel of the reinforced concrete foundation is exposed, and after placing the open channel, the reinforcing steel of the open channel is A method is adopted in which the reinforcing reinforcing bar of the foundation is connected by another assembled reinforcing bar, and the openings of both are filled with concrete. Thus, the open channel and the reinforced concrete foundation are integrated by the reinforcing bars arranged in the opening and the concrete filled in the opening.
【０００９】開渠の底版は周辺部を除いて中央部を１つ
の開口部としてもよいし、区切って２〜６個の複数の開
口部としてもよいが、底版面積の大部分が開口部を形成
することが鉄筋コンクリート基礎との一体化を図る上で
好ましいことは言うまでもない。[0009] The bottom of the open channel may have a single opening at the center except for the peripheral portion, or may have a plurality of two to six openings divided therefrom. Needless to say, the formation is preferable in order to achieve integration with the reinforced concrete foundation.
【００１０】開渠の開口部は通常は上面と下面とが同面
積の角柱状に形成されるが、上面が広く下面が狭いテー
パー状の形状（逆角錘台形）としておけば、充填・硬化
したコンクリートの楔効果により、開渠の地下水の浮力
に対する抵抗力が一層増加するので、場合によってはか
かる形状としておくのが好ましい。The opening of the open channel is usually formed in the shape of a prism having the same area on the upper and lower surfaces. The wedge effect of the concrete increases the resistance of the open channel to the buoyancy of the groundwater. Therefore, it is preferable to adopt such a shape in some cases.
【００１１】構築する鉄筋コンクリート基礎の幅をその
上に載置するプレキャスト鉄筋コンクリート開渠の幅よ
りも広くしておけば、開渠の載置されていない部分に地
山の重量が載荷されることになり、鉄筋コンクリート基
礎にかかる重量を増加させる結果となるので、事情が許
せば開渠の幅よりも広い鉄筋コンクリート基礎を構築す
るのが好ましい。If the width of the reinforced concrete foundation to be constructed is made wider than the width of the precast reinforced concrete open channel placed thereon, the weight of the ground will be loaded on the portion where the open channel is not placed. Therefore, it is preferable to construct a reinforced concrete foundation wider than the width of the open channel, if circumstances permit.
【００１２】[0012]
【発明の実施の形態】以下図面を参照しながら本願発明
で使用するプレキャスト鉄筋コンクリート開渠の構造、
本願発明で構築する鉄筋コンクリート基礎の構造ならび
に施工手順について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, the structure of a precast reinforced concrete open channel used in the present invention will be described below.
The structure and construction procedure of the reinforced concrete foundation constructed in the present invention will be described.
【００１３】図１は本願発明で使用するプレキャスト鉄
筋コンクリート開渠の１例を示し、（ａ）は平面図、
（ｂ）は（ａ）のＡ−Ａ断面図である。FIG. 1 shows an example of a precast reinforced concrete open channel used in the present invention, wherein (a) is a plan view,
(B) is AA sectional drawing of (a).
【００１４】図示されるようにプレキャスト鉄筋コンク
リート開渠１の底版には長方形の開口部２が３個設けら
れ、それぞれの開口部２に底版の補強鉄筋として縦横に
配筋された鉄筋３が露出している。As shown in the drawing, three rectangular openings 2 are provided in the bottom plate of the precast reinforced concrete culvert 1, and the reinforcing bars 3 arranged vertically and horizontally as reinforcing bars of the bottom plate are exposed in each of the openings 2. ing.
【００１５】図２は本願発明で使用するプレキャスト鉄
筋コンクリート開渠の他の１例を示し、（ａ）は平面
図、（ｂ）は（ａ）のＡ−Ａ断面図である。図２は図１
の開口部２を２つに区切ったものでプレキャスト鉄筋コ
ンクリート開渠１の底版に長方形の開口部２が６個設け
られ、それぞれの開口部２に底版の補強鉄筋として縦横
に配筋された鉄筋３が露出している。FIGS. 2A and 2B show another example of the precast reinforced concrete open channel used in the present invention. FIG. 2A is a plan view, and FIG. 2B is a sectional view taken along line AA of FIG. FIG. 2 shows FIG.
The opening 2 is divided into two, and six rectangular openings 2 are provided in the bottom plate of the precast reinforced concrete culvert 1, and the reinforcing bars 3 arranged in each opening 2 vertically and horizontally as reinforcing bars of the bottom plate. Is exposed.
【００１６】図３は本願発明で構築する鉄筋コンクリー
ト基礎の１例を示し、（ａ）は平面図、（ｂ）は（ａ）
のＡ−Ａ断面図である。FIG. 3 shows an example of a reinforced concrete foundation constructed according to the present invention, wherein (a) is a plan view and (b) is (a).
It is AA sectional drawing of.
【００１７】この例は鉄筋コンクリート基礎４の構築の
際に、長方形の開口部７を３個設けたもので、それぞれ
の開口部７に鉄筋コンクリート基礎４の補強鉄筋として
縦横に配筋された鉄筋８が露出している。In this example, when the reinforced concrete foundation 4 is constructed, three rectangular openings 7 are provided. In each of the openings 7, there is provided a reinforcing bar 8 laid vertically and horizontally as a reinforcing reinforcing bar for the reinforced concrete foundation 4. It is exposed.
【００１８】本願発明の構築方法について、図３に示す
鉄筋コンクリート基礎４を構築し、その基礎４に図１に
示すプレキャスト鉄筋コンクリート開渠１を載置して一
体化する場合を例として図４を参照しながら施工順序に
従って説明する。The construction method according to the present invention is described with reference to FIG. 4 as an example in which a reinforced concrete foundation 4 shown in FIG. 3 is constructed, and a precast reinforced concrete open channel 1 shown in FIG. The description will be made according to the construction order.
【００１９】図４はプレキャスト鉄筋コンクリート開渠
１と鉄筋コンクリート基礎４との一体化施工時を示し、
（ａ）は平面図、（ｂ）は（ａ）のＡ−Ａ断面図であ
る。FIG. 4 shows an integrated construction of the precast reinforced concrete open channel 1 and the reinforced concrete foundation 4,
(A) is a plan view, and (b) is an AA cross-sectional view of (a).
【００２０】(1)場所打ち鉄筋コンクリートにより所定
の場所に図３に示すように、３個の開口部７を有する鉄
筋コンクリート基礎４を構築する。(1) As shown in FIG. 3, a reinforced concrete foundation 4 having three openings 7 is constructed at a predetermined place by cast-in-place reinforced concrete.
【００２１】(2)図１に示す底版に長方形の開口部２を
３個有するプレキャスト鉄筋コンクリート開渠１を開口
部２と開口部７との位置を合わせながら鉄筋コンクリー
ト基礎４の上に吊り降ろして載置する。(2) A precast reinforced concrete culvert 1 having three rectangular openings 2 is suspended and lowered on the reinforced concrete foundation 4 while aligning the positions of the openings 2 and 7 on the bottom plate shown in FIG. Place.
【００２２】(3)組立鉄筋９の両端を曲げて底版の補強
鉄筋３と基礎４の補強鉄筋８とを組立鉄筋９により接続
する。(3) The reinforcing bars 3 of the bottom slab are connected to the reinforcing bars 8 of the foundation 4 by bending both ends of the assembled reinforcing bars 9.
【００２３】(4)基礎４の開口部７および底版の開口部
２にコンクリート６を充填する。コンクリート６の硬化
をまって１個のプレキャスト鉄筋コンクリート開渠１の
設置が終わる。敷設方向に次々にプレキャスト鉄筋コン
クリート開渠１を設置して開水路が構築される。(4) Concrete 6 is filled into the opening 7 of the foundation 4 and the opening 2 of the bottom slab. After the hardening of the concrete 6, the installation of one precast reinforced concrete open channel 1 is completed. An open channel is constructed by installing precast reinforced concrete culverts 1 one after another in the laying direction.
【００２４】[0024]
【発明の効果】本願発明の構築方法の採用により、次の
ような効果が奏せられる。According to the construction method of the present invention, the following effects can be obtained.
【００２５】(1)開水路内の水に開水路外の地下水が混
入することはないので、流量に応じた経済的な大きさの
開水路とすることが可能となるばかりでなく、開水路を
流す水本来の水質を維持することができる。(1) Since groundwater outside the open channel is not mixed with water in the open channel, it is possible not only to make the open channel of an economical size according to the flow rate, but also to open the open channel. The original water quality of the flowing water can be maintained.
【００２６】(2)開水路の上面を蓋で覆う必要はないの
で、施工費が低くなるばかりでなく、水路の監視や維持
管理を容易に行うことができる。(2) Since it is not necessary to cover the upper surface of the open channel with a lid, not only the construction cost is reduced, but also the monitoring and maintenance of the channel can be easily performed.
【図１】本願発明で使用するプレキャスト鉄筋コンクリ
ート開渠の１例を示し、（ａ）は平面図、（ｂ）は
（ａ）のＡ−Ａ断面図である。FIG. 1 shows an example of a precast reinforced concrete open channel used in the present invention, wherein (a) is a plan view and (b) is a sectional view taken along line AA of (a).
【図２】本願発明で使用するプレキャスト鉄筋コンクリ
ート開渠の他の１例を示し、（ａ）は平面図、（ｂ）は
（ａ）のＡ−Ａ断面図である。FIGS. 2A and 2B show another example of a precast reinforced concrete open channel used in the present invention, wherein FIG. 2A is a plan view and FIG. 2B is a sectional view taken along line AA of FIG.
【図３】本願発明で構築する鉄筋コンクリート基礎の１
例を示し、（ａ）は平面図、（ｂ）は（ａ）のＡ−Ａ断
面図である。FIG. 3 shows a reinforced concrete foundation 1 constructed according to the present invention.
An example is shown, (a) is a plan view, (b) is an AA sectional view of (a).
【図４】プレキャスト鉄筋コンクリート開渠と鉄筋コン
クリート基礎との一体化施工時を示し、（ａ）は平面
図、（ｂ）は（ａ）のＡ−Ａ断面図である。FIGS. 4A and 4B show an integrated construction of a precast reinforced concrete culvert and a reinforced concrete foundation, wherein FIG. 4A is a plan view and FIG. 4B is a sectional view taken along line AA of FIG.
１…プレキャスト鉄筋コンクリート開渠、２…プレキャ
スト鉄筋コンクリート開渠底版の開口部、３…底版補強
鉄筋、４…鉄筋コンクリート基礎、６…コンクリート、
７…鉄筋コンクリート基礎の開口部、８…基礎補強鉄
筋、９…組立鉄筋。1 ... precast reinforced concrete culvert, 2 ... opening of precast reinforced concrete culvert, 3 ... bottom slab reinforcement, 4 ... reinforced concrete foundation, 6 ... concrete,
7 ... Opening of reinforced concrete foundation, 8 ... Foundation reinforcement, 9 ... Assembly reinforcement.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭59−35433（ＪＰ，Ｕ) 実公 昭64−422（ＪＰ，Ｙ２) 実公 平４−23939（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) E02B 5/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-59-35433 (JP, U) Japanese Utility Model 64-64 (JP, Y2) Japanese Utility Model 4-23939 (JP, Y2) (58) Survey Field (Int.Cl. 6 , DB name) E02B 5/02
Claims (3)
コンクリート基礎を場所打ち鉄筋コンクリートにより構
築し、（Ｂ）底版に鉄筋の露出した開口部を持つプレキ
ャスト鉄筋コンクリート開渠を、両者の開口部の位置を
合致させて、前記コンクリート基礎の上に載置し、
（Ｃ）前記プレキャスト鉄筋コンクリート開渠の開口部
の鉄筋と前記鉄筋コンクリート基礎の開口部の鉄筋とを
別の組立鉄筋により接続した後、両者の開口部にコンク
リートを充填して前記プレキャスト鉄筋コンクリート開
渠と前記鉄筋コンクリート基礎とを一体化することを特
徴とする開水路の構築方法。(A) A reinforced concrete foundation having an exposed opening of a reinforcing steel is constructed of cast-in-place reinforced concrete. Match the position, place on the concrete foundation,
(C) After the reinforcing steel at the opening of the precast reinforced concrete opening and the reinforcing steel at the opening of the reinforced concrete foundation are connected by another assembling reinforcing steel, both openings are filled with concrete to fill the opening of the precast reinforced concrete opening. A method for constructing an open channel, comprising integrating a reinforced concrete foundation.
口部が上面が広く、下面が狭いテーパー状の形状である
ことを特徴とする請求項１記載の開水路の構築方法。2. The method for constructing an open channel according to claim 1, wherein the opening of the precast reinforced concrete channel has a tapered shape having a wide upper surface and a narrow lower surface.
よりも広い幅の鉄筋コンクリート基礎を構築することを
特徴とする請求項１及び請求項２記載の開水路の構築方
法。3. The method for constructing an open channel according to claim 1, wherein a reinforced concrete foundation having a width larger than a width of the precast reinforced concrete culvert is constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8336660A JP2978126B2 (en) | 1996-12-17 | 1996-12-17 | How to construct an open channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8336660A JP2978126B2 (en) | 1996-12-17 | 1996-12-17 | How to construct an open channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10176322A JPH10176322A (en) | 1998-06-30 |
| JP2978126B2 true JP2978126B2 (en) | 1999-11-15 |
Family
ID=18301480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8336660A Expired - Fee Related JP2978126B2 (en) | 1996-12-17 | 1996-12-17 | How to construct an open channel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2978126B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334410A (en) * | 2013-07-01 | 2013-10-02 | 高邮市水务局 | Prefabricated part of lining trapezoid channel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437324B (en) * | 2013-09-05 | 2015-12-23 | 中国建筑第八工程局有限公司 | Geogrid drain board vertical drainage system of municipal water storage channel and construction method thereof |
| JP7065734B2 (en) * | 2018-09-05 | 2022-05-12 | 鹿島建設株式会社 | How to build |
-
1996
- 1996-12-17 JP JP8336660A patent/JP2978126B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334410A (en) * | 2013-07-01 | 2013-10-02 | 高邮市水务局 | Prefabricated part of lining trapezoid channel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10176322A (en) | 1998-06-30 |
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