JP2003239303A - Connecting structure of manhole and pipe - Google Patents
Connecting structure of manhole and pipeInfo
- Publication number
- JP2003239303A JP2003239303A JP2002034388A JP2002034388A JP2003239303A JP 2003239303 A JP2003239303 A JP 2003239303A JP 2002034388 A JP2002034388 A JP 2002034388A JP 2002034388 A JP2002034388 A JP 2002034388A JP 2003239303 A JP2003239303 A JP 2003239303A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- manhole
- hole
- flange
- peripheral surface
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、地中に埋設される
マンホールと配管との接続構造に関し、詳しくはマンホ
ールの内側から配管を簡単に接続できると共に、マンホ
ールと配管とを伸縮及び屈曲自在に接続できるマンホー
ルと配管との接続構造に関する。
【０００２】
【従来の技術】一般に、上下水道の配管、あるいは通信
ケーブル等を挿通するための保護用配管をコンクリート
製のマンホールに接続するとき、マンホールの側壁に穿
設した貫通孔に配管の一端部を挿入し、配管の外周面と
貫通孔の内周面との隙間にモルタル等を充填して接続す
ることが行われている。ところが、このモルタル等を用
いてマンホールと配管とを剛体接続した場合には、地震
や地盤沈下の際に両者の変位が吸収されないため、配管
が折損したり、マンホールとの接続部が破損することが
あった。
【０００３】
【発明が解決しようとする課題】この問題を解決するた
め、近年耐震ジョイントと称するゴム製継手を介してマ
ンホールと配管とを接続する構造が提案されているが、
いずれの場合もマンホールの外側から配管を接続する構
造となっている。このため、接続作業にあたっては、マ
ンホールの外側を掘り起こして作業空間を作る必要があ
り、工事が大掛かりとなるだけでなく、付近の交通にも
大きな影響を及ぼすことにもなるという問題があった。
特に、マンホールと配管とがモルタル等で剛体接続した
既存の接合部を耐震性の接続構造に変更する場合には、
施工作業に手間が掛るという問題があった。
【０００４】本発明はかかる課題を解決したものであっ
て、マンホールの内側から配管を簡単に接続できると共
に、マンホールと配管とを伸縮及び屈曲自在に接続でき
るマンホールと配管との接続構造を提供するものであ
る。
【０００５】
【課題を解決するための手段】本発明は、マンホールの
側壁に設けた貫通孔に配管の一端部を挿入し、前記貫通
孔と配管の一端部とを継手を介して接続したマンホール
と配管との接続構造であって、前記貫通孔の内周面と配
管の外周面との間に挿入する短管部の一端にフランジ状
に拡開した鍔部を設けて該鍔部をマンホールの内壁にア
ンカーボルトで固定し、また前記短管部の他端に設けた
フランジにねじ部材を介してリング状の押圧板を接続
し、該フランジと押圧板との間に介装した弾性シール材
をねじ部材の締め付けにより内周側及び外周側に膨張さ
せて配管の外周面と貫通孔の内周面に圧着させたことを
特徴とする。
【０００６】
【発明の実施の形態】以下、本発明の実施の態様を図面
にて詳細に説明する。図１は本発明の一実施例を示すマ
ンホールと配管との接続構造を示す断面図、図２はマン
ホールと配管とがモルタル等によって剛体接合された既
設のマンホールの側壁に貫通孔を穿設する工程を示す断
面図であって、本発明はマンホール１の側壁に設けた貫
通孔１１に配管２の一端部を挿入し、前記貫通孔１１と
配管２の一端部とを継手３を介して接続したものであ
る。
【０００７】本発明で使用する継手３は、ステンレス等
の耐食性を備えた金属部材、あるいは塩化ビニル樹脂等
のプラスチックからなり、マンホール１の側壁に設けた
貫通孔１１の内周面と配管２の外周面との間に挿入され
る短管部３１の一端に鍔部３２が設けられている。前記
鍔部３２はフランジ状に拡開すると共にマンホール１の
内壁と当接する湾曲面に形成されており、その外周縁に
はアンカーボルト４が挿通される複数の貫通孔３２１が
設けられている。
【０００８】前記継手３が固定されるマンホール１の内
壁適所にはアンカーナット４１が埋設されており、該ア
ンカーナット４１と螺合したアンカーボルト４によって
マンホール１の内壁に継手３が固定されている。継手３
の鍔部３２とマンホール１の内壁との間には、必要に応
じてポリウレタン等のクッション材や、エポキシ系のパ
テ７等を適宜介在させることができる。
【０００９】一方、継手３を構成する短管部３１の他端
には内周側に突出するフランジ３３が設けられており、
該フランジ３３とこの外側に対向配置されたリング状の
押圧板３４とがねじ部材５によって連結され、両者の間
に弾性シール材６が挟持されている。シール材６はゴム
等の弾性部材からなるものであって、ねじ部材５の締め
付け作用によってフランジ３３と押圧板３４の間隔が縮
小すると内周側及び外周側に膨張し、配管２の外周面と
貫通孔１１の内周面に圧着して水密性が確保される。
【００１０】弾性シール材６によるマンホール１と配管
２との接続部の外側、つまり貫通孔１１の外側はステン
レス、あるいはプラスチック等の耐食性を備えた網８に
よって被われ、土砂等が当該接続部に浸入しないように
形成されている。また、貫通孔１１の内側には、前記ね
じ部材５を覆い隠すと共に、配管２を中心位置に保持す
るための合成ゴム等からなるリング状の弾性部材９が装
着されているが、この弾性部材９は必要に応じて設けれ
ばよい。
【００１１】前記継手３を用いた接続構造は、新設のマ
ンホールに配管を接続する際に好適に使用できるが、図
２に示した如くマンホールと配管とがモルタル等によっ
て剛体接続された既設のマンホールに適用することもで
きる。この施工例の場合には、まずマンホール１の内側
からホールソーで側壁に図中にニ点鎖線で示した如く貫
通孔を穿孔する。
【００１２】次に、配管３の外周面に付着しているモル
タル等を取り除き、きれいに清掃する。そこで、図１に
示した如く貫通孔１１を通してリング状に形成した網８
を配管２に外挿しながらマンホール１の外壁側に移動さ
せ、網８を押し広げてその周辺部をマンホール１の外壁
にセットする。このようにして貫通孔１１の外側を網８
で被って土砂等がマンホール１内に侵入するのを防止す
る。
【００１３】そこで、マンホール１の内壁適所にアンカ
ーナット４１を埋設し、継手３の先端部、即ちフランジ
３３と押圧板３４との間に弾性シール材６を介装した短
管部３１を配管２に外挿した後、鍔部３２に設けられた
貫通孔３２１にアンカーボルト４を挿入して前記アンカ
ーナット４１に螺合する。このとき、必要に応じて継手
３の鍔部３２とマンホール１の内壁との間にポリウレタ
ン等のクッション材や、エポキシ系のパテ７等を適宜介
在させることができる。
【００１４】最後に、ねじ部材５を締め付け、フランジ
３３と押圧板３４との間で圧縮されて内周側及び外周側
に膨張した弾性シール材６を配管２の外周面と貫通孔１
１の内周面に圧着させる。そこで、必要に応じて貫通孔
１１の内側に合成ゴム等からなるリング状の弾性部材９
を装着する。
【００１５】かくして図１に示した接続状態となり、マ
ンホール１の貫通孔１１と配管２とが弾性シール材６を
介して伸縮及び屈曲自在に接続されるため、地震や地盤
沈下が発生しても配管２が折損したり、マンホール１と
の接合部が破損することもない。
【００１６】
【発明の効果】以上詳述した如く、本発明の接続構造に
よれば、マンホールの内側からの操作だけで配管を接続
できるので、現場での施工時間を大幅に短縮することが
でき、耐震性に優れた接続が得られる。特に、マンホー
ルと配管とがモルタル等によって剛体接続した既設のマ
ンホールに対しても、マンホールの内側からの接続作業
によって耐震性に優れた接続構造に変更することができ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a manhole buried in the ground and a pipe, and more particularly, to a structure in which a pipe can be easily connected from the inside of the manhole. The present invention relates to a connection structure between a manhole and a pipe, which can connect the manhole and the pipe so that the manhole and the pipe can be freely expanded and contracted. 2. Description of the Related Art Generally, when a pipe for water supply and sewerage or a protective pipe for inserting a communication cable or the like is connected to a concrete manhole, one end of the pipe is inserted into a through hole formed in a side wall of the manhole. In such a case, a mortar or the like is filled in the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole to connect the pipe. However, if a rigid connection is made between the manhole and the pipe using this mortar, etc., the displacement of both will not be absorbed in the event of an earthquake or land subsidence, so the pipe may be broken or the connection with the manhole may be damaged. was there. In order to solve this problem, a structure has recently been proposed in which a manhole is connected to a pipe via a rubber joint called an earthquake-resistant joint.
In each case, the pipe is connected from outside the manhole. For this reason, in the connection work, it is necessary to dig up the outside of the manhole to create a work space, which not only requires a large amount of work, but also has a problem that the traffic in the vicinity is greatly affected.
In particular, when changing the existing joint where the manhole and the pipe are rigidly connected with mortar or the like to an earthquake-resistant connection structure,
There was a problem that the construction work was troublesome. The present invention has been made to solve the above problems, and provides a connection structure between a manhole and a pipe, which can easily connect the pipe from the inside of the manhole and can connect the manhole and the pipe so as to be able to expand and contract and bend freely. Things. According to the present invention, there is provided a manhole in which one end of a pipe is inserted into a through hole provided in a side wall of the manhole, and the through hole and one end of the pipe are connected via a joint. And a piping structure, wherein a flange portion that is expanded in a flange shape is provided at one end of a short pipe portion inserted between the inner peripheral surface of the through hole and the outer peripheral surface of the piping, and the flange portion is a manhole. An elastic seal fixed to the inner wall of the short pipe with an anchor bolt, and a ring-shaped pressing plate connected to a flange provided at the other end of the short pipe portion via a screw member, and interposed between the flange and the pressing plate The material is expanded to the inner peripheral side and the outer peripheral side by tightening the screw member, and is pressed against the outer peripheral surface of the pipe and the inner peripheral surface of the through hole. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a connection structure between a manhole and a pipe showing one embodiment of the present invention. FIG. 2 is a view showing a through hole formed in a side wall of an existing manhole in which the manhole and the pipe are rigidly joined by mortar or the like. FIG. 4 is a cross-sectional view showing a process, in which the present invention inserts one end of a pipe 2 into a through hole 11 provided in a side wall of a manhole 1 and connects the through hole 11 and one end of the pipe 2 via a joint 3. It was done. The joint 3 used in the present invention is made of a corrosion-resistant metal member such as stainless steel or a plastic such as vinyl chloride resin, and has an inner peripheral surface of a through hole 11 provided in a side wall of the manhole 1 and a pipe 2. A collar portion 32 is provided at one end of the short tube portion 31 inserted between the flange portion 32 and the outer peripheral surface. The flange portion 32 is formed in a curved surface that expands in a flange shape and abuts on the inner wall of the manhole 1, and has a plurality of through holes 321 through which the anchor bolts 4 are inserted. An anchor nut 41 is buried at an appropriate position on the inner wall of the manhole 1 to which the joint 3 is fixed, and the joint 3 is fixed to the inner wall of the manhole 1 by an anchor bolt 4 screwed with the anchor nut 41. . Fitting 3
A cushioning material such as polyurethane, an epoxy-based putty 7 or the like can be appropriately interposed between the flange portion 32 and the inner wall of the manhole 1 as necessary. On the other hand, the other end of the short pipe portion 31 constituting the joint 3 is provided with a flange 33 projecting inwardly.
The flange 33 and a ring-shaped pressing plate 34 disposed on the outside of the flange 33 are connected by a screw member 5, and an elastic sealing material 6 is sandwiched between the two. The sealing member 6 is made of an elastic member such as rubber. When the distance between the flange 33 and the pressing plate 34 is reduced by the tightening action of the screw member 5, the sealing member 6 expands toward the inner and outer peripheral sides, and Water tightness is ensured by pressing against the inner peripheral surface of the through hole 11. The outside of the connection between the manhole 1 and the pipe 2 by the elastic sealing material 6, that is, the outside of the through hole 11, is covered with a corrosion-resistant net 8 made of stainless steel, plastic, or the like. It is formed so as not to penetrate. A ring-shaped elastic member 9 made of synthetic rubber or the like for covering the screw member 5 and holding the pipe 2 at a central position is mounted inside the through hole 11. 9 may be provided as needed. The connection structure using the joint 3 can be suitably used when connecting a pipe to a newly installed manhole. As shown in FIG. 2, an existing manhole in which the manhole and the pipe are rigidly connected by mortar or the like is used. Can also be applied. In the case of this construction example, first, a through hole is formed in the side wall with a hole saw from the inside of the manhole 1 as shown by a two-dot chain line in the figure. Next, the mortar and the like adhering to the outer peripheral surface of the pipe 3 are removed and cleaned thoroughly. Therefore, a net 8 formed in a ring shape through the through hole 11 as shown in FIG.
Is moved to the outer wall side of the manhole 1 while being extrapolated to the pipe 2, the net 8 is pushed out, and the periphery thereof is set on the outer wall of the manhole 1. Thus, the outside of the through hole 11 is
To prevent earth and sand from entering the manhole 1. Therefore, an anchor nut 41 is buried at an appropriate position on the inner wall of the manhole 1, and a short pipe portion 31 having an elastic sealing material 6 interposed between a distal end portion of the joint 3, that is, the flange 33 and the pressing plate 34 is connected to the pipe 2. After that, the anchor bolt 4 is inserted into a through hole 321 provided in the flange portion 32 and screwed into the anchor nut 41. At this time, a cushion material such as polyurethane, an epoxy-based putty 7 or the like can be appropriately interposed between the flange 32 of the joint 3 and the inner wall of the manhole 1 as necessary. Finally, the screw member 5 is tightened, and the elastic sealing material 6 compressed between the flange 33 and the pressing plate 34 and expanded to the inner peripheral side and the outer peripheral side is inserted into the outer peripheral surface of the pipe 2 and the through hole 1.
1 is pressed against the inner peripheral surface. Therefore, if necessary, a ring-shaped elastic member 9 made of synthetic rubber or the like is provided inside the through hole 11.
Attach. Thus, the connection state shown in FIG. 1 is established, and the through hole 11 of the manhole 1 and the pipe 2 are connected to each other via the elastic sealing material 6 so as to be able to expand and contract and bend freely. There is no breakage of the pipe 2 or breakage of the joint with the manhole 1. As described above in detail, according to the connection structure of the present invention, since the pipe can be connected only from the inside of the manhole, the construction time on site can be greatly reduced. A connection with excellent earthquake resistance can be obtained. In particular, even for an existing manhole in which the manhole and the pipe are rigidly connected by mortar or the like, the connection structure from the inside of the manhole can be changed to a connection structure excellent in earthquake resistance.
【図面の簡単な説明】
【図１】本発明の一実施例を示すマンホールと配管との
接続構造を示す断面図である。
【図２】モルタル等によって剛体接続された既設のマン
ホールの側壁に貫通孔を穿設する工程を示す断面図であ
る。
【符号の説明】
１ マンホール
２ 配管
３ 継手
４ アンカーボルト
５ ねじ部材
６ 弾性シール材BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a connection structure between a manhole and a pipe showing one embodiment of the present invention. FIG. 2 is a cross-sectional view showing a step of forming a through hole in a side wall of an existing manhole rigidly connected by a mortar or the like. [Description of Signs] 1 Manhole 2 Piping 3 Joint 4 Anchor bolt 5 Screw member 6 Elastic sealing material
Claims (1)
の一端部を挿入し、前記貫通孔と配管の一端部とを継手
を介して接続したマンホールと配管との接続構造であっ
て、前記貫通孔の内周面と配管の外周面との間に挿入さ
れる短管部の一端にフランジ状に拡開した鍔部を設けて
該鍔部をマンホールの内壁にアンカーボルトで固定し、
また前記短管部の他端に設けたフランジにねじ部材を介
してリング状の押圧板を接続し、該フランジと押圧板と
の間に介装した弾性シール材をねじ部材の締め付けによ
り内周側及び外周側に膨張させて配管の外周面と貫通孔
の内周面に圧着させたことを特徴とするマンホールと配
管との接続構造。Claims: 1. A connection between a manhole and a pipe, wherein one end of the pipe is inserted into a through hole provided in a side wall of the manhole, and the through hole and one end of the pipe are connected via a joint. A flange which is formed in a flange shape at one end of a short pipe inserted between an inner peripheral surface of the through hole and an outer peripheral surface of the pipe, and the flange is anchored to an inner wall of the manhole. Fix with bolts,
In addition, a ring-shaped pressing plate is connected to a flange provided at the other end of the short pipe portion via a screw member, and an elastic seal material interposed between the flange and the pressing plate is tightened on the inner periphery by tightening the screw member. A connection structure between a manhole and a pipe, characterized in that the pipe is inflated to the outer side and the outer side and is pressed against the outer circumference of the pipe and the inner circumference of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002034388A JP3902482B2 (en) | 2002-02-12 | 2002-02-12 | Connection structure between manhole and piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002034388A JP3902482B2 (en) | 2002-02-12 | 2002-02-12 | Connection structure between manhole and piping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003239303A true JP2003239303A (en) | 2003-08-27 |
| JP3902482B2 JP3902482B2 (en) | 2007-04-04 |
Family
ID=27776905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002034388A Expired - Fee Related JP3902482B2 (en) | 2002-02-12 | 2002-02-12 | Connection structure between manhole and piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3902482B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646447B1 (en) * | 2004-11-13 | 2006-11-23 | 신우콘크리트산업 주식회사 | Manhole having insert connector |
| JP2007051736A (en) * | 2005-08-19 | 2007-03-01 | Denso Corp | Pipe connecting device, and pipe connecting method |
-
2002
- 2002-02-12 JP JP2002034388A patent/JP3902482B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646447B1 (en) * | 2004-11-13 | 2006-11-23 | 신우콘크리트산업 주식회사 | Manhole having insert connector |
| JP2007051736A (en) * | 2005-08-19 | 2007-03-01 | Denso Corp | Pipe connecting device, and pipe connecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3902482B2 (en) | 2007-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2001084037A1 (en) | Duct repairing material, repairing structure, and repairing method | |
| US20040208704A1 (en) | Manhole structure constructing method, manhole structure water-stop flexible joint and manhole structure | |
| WO2004007849A1 (en) | Manhole structure, flexible water shut off joint for manhole structure and method for installing manhole structure | |
| JP3497151B2 (en) | Connection structure between manhole and sewage main | |
| JP2003239303A (en) | Connecting structure of manhole and pipe | |
| JP4047139B2 (en) | Water stop joint for manhole, pipe joint, manhole structure and construction method of manhole structure | |
| JP2737049B2 (en) | Connection method and connection structure between underground structure frame and pipe | |
| JP3903373B2 (en) | Water stop flexible joint for manhole, manhole structure and manhole construction method | |
| KR100836512B1 (en) | Duct repairing material, repairing structure, and repairing method | |
| JPH04306398A (en) | Repairing method of concrete wall surface | |
| JP3844434B2 (en) | Manhole pipe connection structure | |
| JP3598080B2 (en) | How to fix the manhole sheath tube | |
| JP2002122287A (en) | Rehabilitation-repairing technique improving performance of buried pipe | |
| KR101960698B1 (en) | Joint structure of underground culvert | |
| JP6793386B2 (en) | Seismic joints for manholes and their mounting methods | |
| JP2673278B2 (en) | Formation fluctuation absorption joint mechanism of pipeline for structure | |
| CA2435831A1 (en) | Block unit for repairing flow passage facilities and method of repairing flow passage facilities | |
| JP4617037B2 (en) | How to connect manholes and pipes | |
| JP2003201718A (en) | Pipe connecting structure of manhole | |
| KR200414048Y1 (en) | Structure of Precast Concrete Box with Complex Function | |
| JP3064261B2 (en) | Pipe-forming propulsion pipes and fittings | |
| JP4070562B2 (en) | Seismic joint structure of manhole and pipe | |
| JP2003206545A (en) | Pip connecting structure of manhole | |
| KR200398178Y1 (en) | Connection system between a manhole and a pipe | |
| JP2003074078A (en) | Modifying construction method of pipe connecting part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050125 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20061220 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20061226 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20061228 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110112 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120112 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130112 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |