JPH10266315A - Channel forming member for invert - Google Patents
Channel forming member for invertInfo
- Publication number
- JPH10266315A JPH10266315A JP7231597A JP7231597A JPH10266315A JP H10266315 A JPH10266315 A JP H10266315A JP 7231597 A JP7231597 A JP 7231597A JP 7231597 A JP7231597 A JP 7231597A JP H10266315 A JPH10266315 A JP H10266315A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- flow path
- invert
- forming member
- manhole
- 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.)
- Pending
Links
Landscapes
- Sewage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、インバートの流路
形成用部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invert channel forming member.
【０００２】[0002]
【従来の技術】下水管路は、道路の地形的な状況に合わ
せ、かつ、地下埋設物を避けながら、自然流下によって
汚水が流れるように一定の勾配を確保しつつ敷設される
ようになっている。また、下水管路は、維持管理を容易
にするために、点検しやすい直管のみを使用して形成さ
れるため、下水管路の起点、合流点には必ずマンホール
が設けられている。2. Description of the Related Art Sewer pipes have been laid while maintaining a constant gradient so that sewage flows by natural flow while adapting to the topographical conditions of roads and avoiding underground buried objects. I have. In addition, since the sewer pipe is formed using only straight pipes that are easy to inspect to facilitate maintenance, manholes are always provided at the starting point and junction of the sewer pipe.
【０００３】マンホールの底には、流入口である上手側
の下水管路からマンホール内に流入した汚水を流出口で
ある下手側の下水管路に導く流路となる溝が形成された
インバートが設けられている。従来、インバートは、現
場作業で上手側の下水管路の流入角度や落差に合わせて
マンホールの底にモルタルを流し込み仕上げていたが、
近年、現場での施工性を向上させるために、図８に示す
ように、工場で予め断面略逆アーチ状に成形された合成
樹脂製のインバートの流路形成部材（たとえば、積水化
学工業社製 商品名エスロンらくらくインバート等）１
００が提案され、市販されている。[0003] At the bottom of the manhole, there is formed an invert having a groove serving as a flow path for guiding sewage flowing into the manhole from the well-side sewage pipe as an inlet to the lower-side sewage pipe as an outlet. Is provided. Conventionally, invert was finished by pouring mortar into the bottom of the manhole according to the inflow angle and head of the sewage pipe on the better side in the field work,
In recent years, in order to improve workability on site, as shown in FIG. 8, as shown in FIG. 8, a synthetic resin invert flow path forming member (for example, manufactured by Sekisui Chemical Co.) Product name Eslon Easy Invert etc.) 1
00 has been proposed and is commercially available.
【０００４】すなわち、この合成樹脂製のインバートの
流路形成部材（以下、「流路形成部材」とのみ記す）１
００は、図９に示すように、上手側下水管路２００およ
び下手側下水管路５００の流入角度および流出角度に合
わせて勾配を付けてマンホール３００の底に設けられた
基板４００上に敷設するとともに、流路形成部材１００
の下側にコンクリートを打設するようにすれば、簡単に
確実な流水断面の流路を備えたインバートが形成され、
モルタル仕上げのように熟練を要さず、施工性がよくな
る。[0004] That is, this synthetic resin invert flow path forming member (hereinafter, simply referred to as “flow path forming member”) 1
9 is laid on a substrate 400 provided at the bottom of the manhole 300 with a gradient in accordance with the inflow angle and outflow angle of the upper sewer pipe 200 and the lower sewer pipe 500 as shown in FIG. In addition, the flow path forming member 100
If you cast concrete underneath, an invert with a flow path with a simple and reliable water flow section is formed,
It does not require skill like mortar finishing, and the workability is improved.
【０００５】また、このような流路形成部材１００は、
図８および図９では直線状のみをしか示されていない
が、90°エルボ型や、Ｙ型、Ｔ型等の合流タイプのもの
などのいろいろな形状のものがあり、マンホール３００
へ流入する流入側の下水管路２００の数や流入側の下水
管路２００と流出側の下水管路５００とのなす角度等に
応じて適宜選択できるようになっている。Further, such a flow path forming member 100 is
8 and 9 show only a linear shape, there are various shapes such as a 90 ° elbow type, a merged type such as a Y type and a T type, and the like.
It can be appropriately selected according to the number of inflow-side sewage pipes 200 flowing into the tub, the angle between the inflow-side sewage pipes 200 and the outflow-side sewage pipes 500, and the like.
【０００６】しかし、マンホールへの流入する下水管路
の流入角度や、流入側の下水管路と流出側の下水管路と
がなす角度等がその現場で微妙に異なることがあり、多
数の形状を備えているといっても、上記のようなインバ
ート１００で全ての場合に対応させようとすれば、種類
も非常に多くせざるを得ず、コスト的に不可能である。However, the inflow angle of the sewage pipe flowing into the manhole, the angle formed by the sewage pipe on the inflow side and the sewage pipe on the outflow side, and the like may be slightly different at the site. However, if the invert 100 as described above is used to handle all cases, the number of types must be very large, which is impossible in terms of cost.
【０００７】したがって、流路形成部材１００で対応し
きれない場合、依然として現場でのモルタル施工のみで
インバートを作製しているのが現状である。[0007] Therefore, in the case where the flow path forming member 100 cannot cope with the situation, the invert is still produced only by mortar construction on site.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、このような
事情に鑑みて、１種類のみの流路形成部材を用いるだけ
で、いろいろな条件の異なるマンホールの底部にインバ
ートを簡単に形成することがてきる合成樹脂製の流路形
成部材を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made to simply form an invert at the bottom of a manhole under various conditions by using only one kind of flow path forming member. An object of the present invention is to provide a flow path forming member made of a synthetic resin.
【０００９】[0009]
【課題を解決するための手段】本発明にかかる流路形成
部材は、このような目的を達成するために、マンホール
への流体の流入口と、マンホールからの流体の流出口と
を接続する流路となるインバートの流路形成用部材にお
いて、断面略逆アーチ状の本体部と、本体部の少なくと
も一方の端部に設けられた球面形状の連結部とを備える
複数の合成樹脂製の連結部材からなり、各連結部材の連
結部が、連結される他の連結部材の連結部の外側または
内側に嵌合する大きさに形成されている構成とした。In order to achieve such an object, a flow path forming member according to the present invention provides a flow path connecting a fluid inlet to a manhole and a fluid outlet from a manhole. In the flow path forming member of the invert to be a path, a plurality of synthetic resin connecting members including a main body having a substantially inverted arch cross section and a spherical connecting portion provided on at least one end of the main body. And the connecting portion of each connecting member is formed to have a size that fits outside or inside the connecting portion of the other connecting member to be connected.
【００１０】上記構成において、流入側の連結部材と流
出側の連結部材とが、マンホールの上側から見て流入側
の連結部材の本体部と、流出側の連結部材の本体部とを
交差させるように配置される場合、すなわち、流入側の
連結部材の本体部と、流出側の連結部材の本体部とが一
直線に並ばない場合、連結される少なくとも一方の連結
部材の連結部が、球の中心を本体部の中心軸からずれた
位置に設けた球面形状に形成されていることが好まし
く、連結される少なくとも一方の連結部材の連結部が、
その本体部との境界における連結部内縁の接線と本体部
の一方の内縁と一致するように設けられていることが特
に好ましい。In the above structure, the inflow-side connecting member and the outflow-side connecting member intersect the main body of the inflow-side connecting member with the main body of the outflow-side connecting member when viewed from above the manhole. In other words, when the main body of the inflow-side connecting member and the main body of the outflow-side connecting member are not aligned, the connecting portion of at least one connecting member to be connected is located at the center of the sphere. Is preferably formed in a spherical shape provided at a position deviated from the central axis of the main body, and a connecting portion of at least one connecting member to be connected is
It is particularly preferable that the connecting portion is provided so as to coincide with a tangent line of an inner edge of the connecting portion at a boundary with the main portion and one inner edge of the main portion.
【００１１】また、連結部は、略半球状をしていて、使
用に際しては必要最小限の重なり部を残して切り取って
用いるようにすることが好ましい。連結部は、流入側の
連結部が連結される流出側の連結部の内側に嵌合する大
きさの球面形状となっていることが好ましい。It is preferable that the connecting portion has a substantially hemispherical shape, and it is preferable that the connecting portion be cut out and used, leaving a necessary minimum overlapping portion. It is preferable that the connecting portion has a spherical shape large enough to fit inside the connecting portion on the outflow side to which the connecting portion on the inflow side is connected.
【００１２】なお、本発明の流路形成部材を形成する樹
脂としては、特に限定されないが、たとえば、ポリ塩化
ビニル、ＡＢＳ樹脂、ポリスチレン、ウレタン系樹脂、
エポキシ系樹脂およびこのれらの複合材料などが挙げら
れるが、下水道管材に実績のあるポリ塩化ビニルが好ま
しい。因みに、樹脂としてポリ塩化ビニルを使用する場
合、本発明の流路形成部材は、特に限定されないが、た
とえば、各連結部材を射出成形する方法、ブロー成形、
真空成形等を用いてパイプを二次加工する方法等によっ
て製造することができる。たとえば、パリソンの先端を
外側に球状に膨らませた成形体をブロー成形で得たの
ち、この成形体を管軸に垂直に２つ割りにして製造する
ことができる。The resin forming the flow path forming member of the present invention is not particularly limited. For example, polyvinyl chloride, ABS resin, polystyrene, urethane resin,
Examples thereof include epoxy resins and composite materials thereof, and polyvinyl chloride, which has been used as a sewer pipe material, is preferable. Incidentally, when using polyvinyl chloride as the resin, the flow path forming member of the present invention is not particularly limited, for example, a method of injection molding each connection member, blow molding,
It can be manufactured by a method of secondary processing of the pipe using vacuum forming or the like. For example, it is possible to manufacture a molded product obtained by blow molding a molded product in which the tip of a parison is bulged outwardly, and then divide the molded product into two perpendicular to the tube axis.
【００１３】[0013]
【発明の実施の形態】以下に、本発明の実施の形態を、
図面を参照しつつ詳しく説明する。図１および図２は、
本発明にかかる流路形成部材の第１の実施の形態をあら
わしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. FIG. 1 and FIG.
1 illustrates a first embodiment of a flow path forming member according to the present invention.
【００１４】図１および図２に示すように、この流路形
成部材１ａは、ポリ塩化ビニル製の流入口側の連結部材
２ａと、流出口側の連結部材３ａとを備えている。図３
に示すように、連結部材２ａ（３ａ）は、略半円筒をし
た断面略逆アーチ状の本体部２１（３１）と略半球状を
した球面形状の連結部（球体コア）２２（３２）とが一
体に形成されていて、流入口側の連結部材２の連結部２
２が、流出側の流路形成部材３の連結部３２に嵌まり込
む球面形状になっている。As shown in FIGS. 1 and 2, the flow path forming member 1a has a connecting member 2a on the inlet side made of polyvinyl chloride and a connecting member 3a on the outlet side. FIG.
As shown in the figure, the connecting member 2a (3a) includes a substantially semi-cylindrical main body 21 (31) having a substantially inverted arch cross section and a substantially hemispherical spherical connecting portion (spherical core) 22 (32). Are formed integrally, and the connecting portion 2 of the connecting member 2 on the inflow side is formed.
2 has a spherical shape that fits into the connecting portion 32 of the flow path forming member 3 on the outflow side.
【００１５】また、両連結部材２ａ，３ａの本体部２
１，３１の開放端は、マンホール４の内周面のアールに
一致する曲面形状になっている。そして、この流路形成
部材１ａは、図１に示すように、流入口側の下水管路５
と流出口側の下水管路６との勾配が異なる場合、まず、
図１に示すように、マンホール４の芯を中心として、流
入口側の下水管路５の勾配（流出口側の下水管路６の勾
配を基準とする）を測定する。つぎに、両連結部材２
ａ，３ａの本体部２１，３１が測定した勾配に合う角度
で交差するように連結部２２，３２を重ね合わせる。Also, the main body 2 of the two connecting members 2a, 3a
The open ends of the first and 31 have a curved surface shape that matches the radius of the inner peripheral surface of the manhole 4. As shown in FIG. 1, the flow path forming member 1a is provided with
When the slope of the sewage pipe 6 is different from that of the outlet side,
As shown in FIG. 1, the gradient of the sewage pipe 5 on the inlet side (based on the gradient of the sewage pipe 6 on the outlet side) is measured around the core of the manhole 4. Next, both connecting members 2
The connecting portions 22 and 32 are overlapped so that the main body portions 21 and 31 of a and 3a intersect at an angle matching the measured gradient.
【００１６】なお、連結部２２，３２の重ね合わせにあ
たっては、流入側の連結部材２の連結部２２が流出口側
の連結部材３の連結部３２の上方から重なるように重合
させるとともに、予め、最小限の幅の重合部２３，３３
のみを確保できるように先端部を切除しておく。When the connecting portions 22 and 32 are overlapped, the connecting portion 22 of the connecting member 2 on the inflow side is superimposed on the connecting portion 32 of the connecting member 3 on the outlet side so as to overlap with each other. Overlapping section 23, 33 with minimum width
The tip is cut off to secure only the tip.
【００１７】つぎに、流入口側の連結部材２ａの本体部
２１に下水管路５を接続するとともに、流出口側の連結
部材３ａの本体部３１に下水管路６を接続するように配
置し、本体部２１，３１の底部に溶接により固定した脚
部材８，８，８を介して、マンホール４の底に設けた基
板７上にセットしたのち、流路形成部材１ａの下側にコ
ンクリート等の水硬性の充填材（図示せず）を流し込み
流路形成部材１ａを所定の位置に固定することで、流路
形成部材１ａによる流路を備えたインバート９をマンホ
ール４の底に形成できるようになっている。Next, the sewage pipe 5 is connected to the main body 21 of the connecting member 2a on the inlet side, and the sewage pipe 6 is connected to the main body 31 of the connecting member 3a on the outlet side. After being set on the substrate 7 provided on the bottom of the manhole 4 via leg members 8, 8, 8 fixed to the bottoms of the main bodies 21, 31 by welding, concrete or the like is placed under the flow path forming member 1a. By injecting a hydraulic filler (not shown), and fixing the flow path forming member 1a at a predetermined position, an invert 9 having a flow path formed by the flow path forming member 1a can be formed at the bottom of the manhole 4. It has become.
【００１８】一方、この流路形成部材１ａは、図４に示
すように、流入口側の下水管路５の流入角度と流出口側
の下水管路６の流出角度とが異なる場合、マンホール
の芯を中心として、流入口側の下水管路５の角度（流出
口側の下水管路６の管軸方向を０°とする）を測定す
る。つぎに、両連結部材２ａ，３ａの本体部２１，３１
が測定した角度に合う角度で交差するように連結部２
２，３２を重ね合わせるたのち、勾配が異なる場合と同
様にしてマンホール４の底にインバート９を形成できる
ようになっている。On the other hand, as shown in FIG. 4, when the inflow angle of the sewage pipe 5 on the inflow side and the outflow angle of the sewage pipe 6 on the outflow side are different, as shown in FIG.
The angle of the sewage pipe 5 on the inflow side (assuming the pipe axis direction of the sewage pipe 6 on the outflow side to be 0 °) is measured with the center of the center as the center. Next, the main body portions 21, 31 of the two connecting members 2a, 3a
So that they intersect at an angle that matches the measured angle
After superimposing 2, 32, the invert 9 can be formed at the bottom of the manhole 4 in the same manner as when the gradient is different.
【００１９】以上のように、この流路形成部材１ａは、
２つの連結部材２ａ，３ａを連結するようになっている
とともに、連結部２２，３２が球面になっており、本体
部２１，３１のなす角度を自在に変更できるので、流入
口側の下水管路５と流出口側の下水管路６の勾配の差が
あったり、マンホール４への流入角度と流出角度とが異
なったりしても、１つの流路形成部材１ａを用いるだけ
で対応することができ、コストを上げることなく、簡単
にマンホールの底にインバート９を形成することができ
る。As described above, this flow path forming member 1a
The two connecting members 2a and 3a are connected, and the connecting portions 22 and 32 are spherical, and the angle formed by the main body portions 21 and 31 can be freely changed. Even if there is a difference in slope between the channel 5 and the sewage pipe 6 on the outlet side, or if the inflow angle and outflow angle to the manhole 4 are different, only one flow path forming member 1a needs to be used. The invert 9 can be easily formed at the bottom of the manhole without increasing the cost.
【００２０】また、流入口側の連結部材２の連結部２２
が流出口側の連結部材３の連結部３２の内側に嵌まり込
むようになっているので、重合部３２の端縁でごみ等が
引っ掛かったりすることなくスムーズに汚水が流出口側
へと流れる。The connecting portion 22 of the connecting member 2 on the inflow side is also provided.
Is fitted inside the connecting portion 32 of the connecting member 3 on the outlet side, so that sewage flows smoothly to the outlet side without dust or the like being caught at the edge of the overlapping portion 32. .
【００２１】図５は本発明にかかる流路形成部材の第２
の実施の形態をあらわしている。図５に示すように、こ
の流路形成部材１ｂは、流出口側の連結部材３ｂの本体
部３４の流入口側が３つに分岐していて、この分岐部３
５，３５，３５の端部にそれぞれ連結部３１が設けられ
ているとともに、３つの流入口側の連結部材２ａを備
え、３方からマンホール に流入する場合に用いられる
ようになっている以外は、第１の実施の形態の流路形成
部材１ａと同様になっている。FIG. 5 shows a second example of the flow path forming member according to the present invention.
Of the present embodiment. As shown in FIG. 5, the flow path forming member 1b has an inflow side of the main body portion 34 of the connection member 3b on the outflow side, and is branched into three.
The connecting portions 31 are provided at the ends of 5, 35 and 35, respectively, and three connecting members 2a on the inlet side are provided, so that they are used when flowing into the manhole from three sides. This is the same as the flow channel forming member 1a of the first embodiment.
【００２２】図６および図７は本発明にかかる流路形成
部材の第３の実施の形態をあらわしている。図６に示す
ように、この流路成形部材１ｃは、流入口側および流出
口側の２つ連結部材２ｃ，３ｃを備え、両連結部材２
ｃ，３ｃが互いに左右対称形状であるので図７では連結
部材３ｃしかあらわしていないが、連結部３７（２７）
の球の中心Ｏが本体部３１（２１）の中心軸Ｃからずれ
た位置で本体部３１（２１）との境界における連結部３
７（２７）の内縁の接線と本体部３１（２１）の一方の
内縁とが一致するように設けられている以外は、第１の
実施の形態の流路形成部材１ａと同様になっている。FIGS. 6 and 7 show a flow path forming member according to a third embodiment of the present invention. As shown in FIG. 6, the flow path forming member 1c includes two connecting members 2c, 3c on the inlet side and the outlet side.
Although only the connecting member 3c is shown in FIG. 7 since c and 3c are symmetrical to each other, the connecting portion 37 (27)
The center O of the sphere is displaced from the center axis C of the main body 31 (21) at the boundary with the main body 31 (21).
The flow path forming member 1a according to the first embodiment is the same as the flow path forming member 1a according to the first embodiment, except that the tangent line of the inner edge of the body 7 (27) and one inner edge of the main body 31 (21) are provided so as to coincide with each other. .
【００２３】すなわち、この流路形成部材１ｃによれ
ば、図６に示すように、流路形成部材１ａに比べ本体部
２１，３１の交差角度が制約されるものの、両連結部材
２ｃ，３ｃとによって形成されたコーナー部１１に流入
した汚水がたまる凹部等が形成されず、流路のつまり等
が軽減できる。That is, according to the flow path forming member 1c, as shown in FIG. 6, although the crossing angle of the main bodies 21, 31 is restricted as compared with the flow path forming member 1a, the two connecting members 2c, 3c are Thus, a concave portion or the like in which the sewage flowing into the corner portion 11 is formed is not formed, and clogging of the flow path can be reduced.
【００２４】本発明にかかる流路形成部材は、上記の実
施の形態に限定されない。たとえば、上記の実施の形態
では、流出口側および流入口側の２種類の連結部材から
構成されていたが、流出口側および流入口側の連結部材
の間にこれらの連結部材を連結する中間の連結部材を設
けるようにしても構わない。ただし、中間の連結部材の
場合、本体部の両端に連結部を設ける必要がある。The channel forming member according to the present invention is not limited to the above embodiment. For example, in the above-described embodiment, two types of connecting members are provided on the outlet side and the inlet side. However, an intermediate part connecting these connecting members between the outlet side and the inlet side is used. May be provided. However, in the case of an intermediate connecting member, it is necessary to provide connecting portions at both ends of the main body.
【００２５】また、上記の実施の形態では、脚部材を後
で連結部材の本体部に溶接で一体化するようになってい
たが、予め成形時に一体に設けておいても構わない。さ
らに、上記の実施の形態では、本体部が半円筒状をして
いたが、断面略逆アーチ状をしていれば、断面放物線形
状などをしていても構わない。Further, in the above embodiment, the leg members are later integrated with the main body of the connecting member by welding, but they may be provided integrally at the time of molding. Further, in the above-described embodiment, the main body has a semi-cylindrical shape, but may have a parabolic cross section as long as it has a substantially inverted arch in cross section.
【００２６】[0026]
【発明の効果】本発明にかかる流路形成部材は、以上の
ように構成されているので、１つの流路形成部材を用意
するだけで、流入口と流出口の位置関係が異なるいろい
ろなマンホールに対応することができる。すなわち、低
コストでいろいろな条件のマンホールの底にインバート
を簡単に形成することができるようになる。Since the flow path forming member according to the present invention is constructed as described above, various manholes in which the positional relationship between the inlet and the outlet is different only by preparing one flow path forming member. Can be handled. That is, the invert can be easily formed at the bottom of the manhole under various conditions at low cost.
【００２７】また、請求項２の流路形成部材や特に請求
項３の流路形成部材のようにすれば、コーナーが形成さ
れる流路を形成してもコーナー部に流入した汚水がたま
る凹部等が形成されず、流路のつまり等が軽減できる。Further, according to the flow path forming member of the second aspect and particularly the flow path forming member of the third aspect, even if a flow path in which a corner is formed is formed, a concave portion in which sewage flowing into the corner portion accumulates. Are not formed, and clogging of the flow path can be reduced.
【図１】本発明にかかる流路形成部材の第１の実施の形
態をあらわし、その施工状態の１例をあらわす断面図で
ある。FIG. 1 is a cross-sectional view illustrating a first embodiment of a flow path forming member according to the present invention, and illustrating an example of a construction state thereof.
【図２】図１の施工状態の平面図である。FIG. 2 is a plan view of the construction state of FIG.
【図３】図１の流路形成部材の連結部材をあらわし、同
図（ａ）は平面図、同図（ｂ）は同図（ａ）のＸ−Ｘ線
断面図、同図（ｃ）は同図（ａ）のＹ−Ｙ線断面図であ
る。3 (a) is a plan view, FIG. 3 (b) is a sectional view taken along line XX of FIG. 3 (a), and FIG. 3 (c). FIG. 3 is a sectional view taken along line YY in FIG.
【図４】図１の流路形成部材の施工状態の他の例をあら
わす平面図である。FIG. 4 is a plan view showing another example of a construction state of the flow path forming member of FIG.
【図５】本発明にかかる流路形成部材の第２の実施の形
態をあらわし、その施工状態の１例をあらわす平面図で
ある。FIG. 5 is a plan view illustrating a second embodiment of a flow path forming member according to the present invention, and illustrating an example of a construction state thereof.
【図６】本発明にかかる流路形成部材の第３の実施の形
態をあらわし、その施工状態の１例をあらわす平面図で
ある。FIG. 6 is a plan view illustrating a third embodiment of a flow path forming member according to the present invention, and illustrating an example of a construction state thereof.
【図７】図６の流路形成部材の連結部材をあらわす平面
図てある。FIG. 7 is a plan view showing a connecting member of the flow path forming member of FIG. 6;
【図８】従来の流路形成部材の１例をあらわす斜視図で
ある。FIG. 8 is a perspective view showing an example of a conventional flow path forming member.
【図９】図８の流路形成部材の施工状態をあらわす断面
図である。FIG. 9 is a cross-sectional view illustrating a construction state of the flow path forming member of FIG.
１ａ，１ｂ，１ｃ 流路形成部材 ２ａ，２ｂ，２ｃ，３ａ，３ｂ，３ｃ 連結部材 ２１，３１ 本体部 ２２，３２，２７，３７ 連結部 ２３，３３ 重合部 ４ マンホール ５ 下水管路（流入側） ６ 下水管路（流出側） ９ インバート Ｃ 中心軸 Ｏ 中心 1a, 1b, 1c Flow path forming member 2a, 2b, 2c, 3a, 3b, 3c Connecting member 21, 31 Main body 22, 32, 27, 37 Connecting part 23, 33 Overlapping part 4 Manhole 5 Sewage pipe (inflow side) 6) Sewer pipe (outflow side) 9 Invert C Center axis O Center
Claims (3)
ルからの流体の流出口とを接続する流路となるインバー
トの流路形成用部材において、断面略逆アーチ状の本体
部と、本体部の少なくとも一方の端部に設けられた球面
形状の連結部とを備える複数の合成樹脂製の連結部材か
らなり、各連結部材の連結部が、連結される他の連結部
材の連結部の外側または内側に嵌合する大きさに形成さ
れていることを特徴とするインバートの流路形成用部
材。An invert flow path forming member serving as a flow path connecting a fluid inlet to a manhole and a fluid outlet from a manhole, wherein the body has a substantially inverted arch-shaped cross section and a body. And a connecting member made of a plurality of synthetic resins provided with a spherical connecting portion provided at at least one end of the connecting member, the connecting portion of each connecting member is outside the connecting portion of the other connecting member to be connected or A member for forming a flow path of an invert, which is formed to have a size that fits inside.
結部が、球の中心を本体部の中心軸からずれた位置に設
けた球面形状に形成されている請求項１に記載のインバ
ートの流路形成用部材。2. The inverting flow according to claim 1, wherein the connecting portion of at least one connecting member to be connected is formed in a spherical shape in which the center of the sphere is provided at a position shifted from the center axis of the main body. Road forming member.
結部が、その本体部との境界における連結部内縁の接線
と本体部の一方の内縁と一致するように設けられている
請求項１に記載のインバートの流路形成用部材。3. The connecting member according to claim 1, wherein the connecting portion of at least one connecting member to be connected is provided so as to coincide with a tangent to an inner edge of the connecting portion at a boundary with the main body portion and one inner edge of the main body portion. A member for forming a channel of the invert according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7231597A JPH10266315A (en) | 1997-03-25 | 1997-03-25 | Channel forming member for invert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7231597A JPH10266315A (en) | 1997-03-25 | 1997-03-25 | Channel forming member for invert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10266315A true JPH10266315A (en) | 1998-10-06 |
Family
ID=13485731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7231597A Pending JPH10266315A (en) | 1997-03-25 | 1997-03-25 | Channel forming member for invert |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10266315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016188494A (en) * | 2015-03-30 | 2016-11-04 | 大成建設株式会社 | Tube sewer construction method and underground flow channel |
-
1997
- 1997-03-25 JP JP7231597A patent/JPH10266315A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016188494A (en) * | 2015-03-30 | 2016-11-04 | 大成建設株式会社 | Tube sewer construction method and underground flow channel |
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