JP7224007B1 - Duct manhole, pipe joint structure at pipe end, joint element for pipe and pipe construction method - Google Patents

Duct manhole, pipe joint structure at pipe end, joint element for pipe and pipe construction method Download PDF

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JP7224007B1
JP7224007B1 JP2022087799A JP2022087799A JP7224007B1 JP 7224007 B1 JP7224007 B1 JP 7224007B1 JP 2022087799 A JP2022087799 A JP 2022087799A JP 2022087799 A JP2022087799 A JP 2022087799A JP 7224007 B1 JP7224007 B1 JP 7224007B1
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joint element
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manhole
culvert
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浩司 前田
太郎 大岡
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株式会社トラストテクノ
吉佳エンジニアリング株式会社
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Abstract

【課題】結合部と連結部材の圧着に差異が生じ得るという技術的課題と、管口と連結部材を同一素材で一体化することができないため、結合部からの浸入水を防ぐことが難しいという技術的課題を解決するための、止水性及び耐久性を兼ね備えた管渠のための管渠結合構造、管渠継手要素と管渠工法の提供。【解決手段】人孔と、管渠の端部の管渠結合構造であって、人孔の壁面を被覆する注入材層と、当該注入材層の表面を覆うライナと、継手要素であって、電熱線が埋設された前記継手要素と、外部電源の入力端子と、前記管渠の内表面及び継手要素の内壁面に、外側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、前記中間層の一方の面がアウターフィルムによって被覆され、前記中間層の他方の面によってインナーフィルムが被覆する管渠結合構造、管渠用継手要素と管渠工法。【選択図】 図1[Issue] There is a technical problem that there may be a difference in the crimping of the joint and the connecting member, and it is difficult to prevent water from entering the joint because the pipe port and the connecting member cannot be made of the same material. In order to solve technical problems, we provide pipe connection structures, pipe joint elements, and pipe construction methods for pipes that have water-stop properties and durability. [Solution] A manhole and a pipe conduit connection structure at the end of the pipe, which includes an injection material layer that covers the wall surface of the manhole, a liner that covers the surface of the injection material layer, and a joint element. , an outer film, an intermediate layer, and an inner film of thermoplastic resin are provided on the joint element in which the heating wire is embedded, the input terminal of the external power source, the inner surface of the pipe, and the inner wall surface of the joint element from the outside. A pipe conduit joint structure, a joint element for a pipe conduit, and a pipe conduit construction method, which have a multilayer structure, one surface of the intermediate layer is covered with an outer film, and the other surface of the intermediate layer is covered with an inner film. [Selection diagram] Figure 1

Description

本発明は、管渠用の人孔と、管渠の端部の管渠結合構造、管渠用継手要素及び管渠工法に関する。 TECHNICAL FIELD The present invention relates to a manhole for a culvert, a culvert connection structure at the end of a culvert, a joint element for a culvert, and a construction method for a culvert.

令和2年度末における全国の下水道管渠の総延長は約49万kmで、このうち標準耐用年数である50年を経過した管渠の延長は約2.5万km(総延長の5%)にのぼる。
これらの既設管渠は、長年の経年劣化や地盤沈下、又は交通荷重の増大による老朽化が著しく、管渠の損傷等が原因と思われる漏水事故や道路陥没、臭気問題等が多発している。
標準耐用年数を経過し更生が必要な老朽管は、10年後には8.2万km(総延長の17%)、20年後には19万km(総延長の39%)と、今後急速に増加することがわかっており、持続的な下水道機能確保のため、計画的な維持管理・改築に実施が必要である。
As of the end of 2020, the total length of sewage pipes nationwide was about 490,000 km, of which the length of pipes that had passed the standard service life of 50 years was about 25,000 km (5% of the total length). ).
These existing sewers have deteriorated over many years, land subsidence, and have deteriorated significantly due to increased traffic loads. Water leakage accidents, road subsidence, odor problems, etc., which are thought to be caused by damage to the sewers, have occurred frequently. .
Aging pipes that have passed the standard service life and need to be rehabilitated will reach 82,000 km (17% of the total length) in 10 years, and 190,000 km (39% of the total length) in 20 years. It is known that it will increase, and it is necessary to carry out planned maintenance and reconstruction in order to secure sustainable sewerage functions.

また、降雨時の確実な稼働が必要な雨水ポンプ場においても、令和2年度末で全国に約1600箇所ある雨水ポンプ場のうち、設備の標準耐用年数20年を経過した施設が約1300箇所(全体の81%)と同様の傾向にある。 In addition, as of the end of FY2020, about 1,300 of the approximately 1,600 rainwater pumping stations nationwide have exceeded their standard service life of 20 years. (81% of the total).

さらに、台風や突発的な集中豪雨に伴う地下水位の上昇等で雨天時浸入水量を含んだ、汚水量が下水道施設の処理能力を上回る事例が多発している。雨天時浸入水は長年、降雨に伴う一時的な現象として扱われ、施設計画においても十分に考慮されてこなかった。 In addition, there are many cases where the amount of sewage, including the amount of infiltration during rainy weather, exceeds the processing capacity of sewerage facilities due to rising groundwater levels due to typhoons and sudden torrential rains. Infiltration during rainy weather has been treated as a temporary phenomenon associated with rainfall for many years, and has not been sufficiently considered in facility planning.

しかし、近年その水量の増大が問題となり、雨天時浸入水の要因としては、気候変動に伴う、降雨量の増加、汚水管渠施設の老朽化、排水設備の誤接続などがあげられ、雨天時浸入水量の増加により、汚水管路からの溢水、宅内への逆流、処理施設の機能低下による公共用水域への影響などが問題となり、浸入水対策が必要となっている。 However, in recent years, the increase in the amount of water has become a problem. Due to the increase in the amount of infiltration, problems such as flooding from sewage pipes, backflow into homes, and the impact on public water areas due to the deterioration of treatment facilities are required, and measures against infiltration are required.

特許文献1は、人孔部と管渠との結合部の管渠結合工法と、老朽化した管渠を更生する工法を開示している。熱硬化性又は光硬化性のライナを用いて連結部材を圧着する方法が記載されている。
特許文献1には、既設管渠施工時にライナを連結部材に圧着させることが記載されている。ライナの厚みや圧着方法によっては、結合部と連結部材の圧着に差異が生じ得るという問題については認識されていない。
特許文献1に記載された工法には、ライニング材の厚みを減少させると、十分な強度を持ったライナを得ることができず、結合部と連結部材の強度が低下し、浸入水を防ぐことが難しいという問題があった。
Patent Literature 1 discloses a method of connecting pipes and culverts for joints between manholes and pipes, and a method of rehabilitating deteriorated pipes and culverts. A method of crimping connecting members with a thermosetting or photocurable liner is described.
Patent Literature 1 describes that a liner is crimped to a connecting member during construction of an existing pipe. There is no recognition of the problem that the thickness of the liner and the method of crimping can cause differences in crimping between the joint and the connecting member.
In the construction method described in Patent Document 1, if the thickness of the lining material is reduced, it is not possible to obtain a liner with sufficient strength, and the strength of the joint and the connecting member decreases, preventing water from entering. was difficult.

特許文献2は、管渠を更生する際に使用する継手要素及びその製造方法を開示している。しかし、ライナの厚みや圧着方法によっては、結合部と連結部材の圧着に差異が生じ得るという問題については認識されておらず、前述の特許文献1と同じく、ライニング材の厚みを減少させると、十分な強度を持ったライナを得ることができず、結合部と連結部材の強度が安定せず、結果として、強度の弱い箇所からの浸入水を防ぐことが難しいという問題があった。 Patent Literature 2 discloses a joint element used when rehabilitating pipes and a method of manufacturing the same. However, it is not recognized that there may be a difference in crimping between the connecting portion and the connecting member depending on the thickness of the liner and the crimping method. It was not possible to obtain a liner having sufficient strength, and the strength of the connecting portion and the connecting member was not stable.

特表2022-509049Special table 2022-509049 特表2020-506349Special table 2020-506349

本発明は、管渠と人孔の結合部において、連結部材の圧着に差異が生じ得るという技術的課題と、ライニング材の厚みを減少させると、十分な強度を持ったライナを得ることができず、従って、結合部と連結部材の強度が安定しない。結果として、管口と連結部材を同一素材で一体化することができないため、強度不足等による損傷が生じ、管渠内への浸入水を防ぐことが難しいという技術的課題を解決するためになされたものである。高い止水性及び耐久性を兼ね備えた管渠のための管渠結合構造、管渠用継手構造並びにこれを用いた管渠結合構造、管渠用継手要素と管渠工法を提供することを目的とする。 The present invention solves the technical problem that there may be a difference in crimping of the connecting member at the joint of the duct and the manhole, and a liner with sufficient strength can be obtained by reducing the thickness of the lining material. Therefore, the strength of the joint and the connecting member is not stable. As a result, since the pipe mouth and the connecting member cannot be integrated with the same material, damage occurs due to insufficient strength, etc., and it is difficult to prevent water from entering the pipe. It is a thing. An object of the present invention is to provide a pipe connection structure for a pipe and culvert, a joint structure for pipe and culvert, a joint structure for pipe and culvert, a joint element for pipe and a pipe construction method using the same. do.

請求項1に係る発明は、管渠用の人孔と、管渠の結合部の管渠結合構造であって、当該管渠結合構造は、前記人孔の壁面を被覆する注入材層と、前記注入材層の表面を覆うライナと、前記結合部に設けられた継手要素であって、電熱線が埋設された継手要素と、前記電熱線の外部電源の入力端子と、前記管渠の内表面及び前記継手要素の内壁面に、表面側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、前記中間層の一方の面が前記アウターフィルムによって被覆され、前記中間層の他方の面によってインナーフィルムが被覆されてなる、ことを特徴とする管渠結合構造に関する。 The invention according to claim 1 is a manhole for a pipe and a pipe-and-drain joint structure of a pipe-and-drain joint, wherein the pipe and sewage joint structure comprises an injection material layer covering the wall surface of the manhole, a liner covering the surface of the injection material layer; a joint element provided at the joint portion and having a heating wire embedded therein; an input terminal for an external power source for the heating wire; A multilayer structure including an outer film of a thermoplastic resin, an intermediate layer and an inner film is formed on the surface and the inner wall surface of the joint element from the surface side, one surface of the intermediate layer is covered with the outer film, The present invention relates to a conduit connection structure characterized in that an inner film is covered by the other surface of an intermediate layer.

請求項2に係る発明は、前記継手要素は、前記人孔と前記管渠の結合部の外周に形成されたスリーブ状部と、この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされ、前記スリーブ状部の外周は被覆部が設けられてなることを特徴とする、請求項1に記載の管渠結合構造に関する。 The invention according to claim 2 is characterized in that the joint element comprises a sleeve-shaped portion formed around the outer periphery of the connecting portion between the manhole and the canal, and the thickness of the sleeve-shaped portion is at least equal to or greater than the thickness of the canal. The pipe connection structure according to claim 1, characterized in that a covering portion is provided on the outer periphery of the sleeve-shaped portion.

請求項3に係る発明は、前記中間層は、ガラス繊維と合成樹脂組成物からなる群から選択される1種以上からなる、請求項1に記載の管渠結合構造に関する。 The invention according to claim 3 relates to the pipe connection structure according to claim 1, wherein the intermediate layer is made of one or more selected from the group consisting of glass fibers and synthetic resin compositions.

請求項4に係る発明は、前記注入材層は、少なくともモルタルを含むことを特徴とする、請求項1に記載の管渠結合構造に関する。 The invention according to claim 4 relates to the pipe and culvert connection structure according to claim 1, characterized in that the injection material layer contains at least mortar.

請求項5に係る発明は、前記注入材層の表面を被覆するライナは、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項1乃至4に記載の管渠結合構造に関する。 The invention according to claim 5 relates to the pipe connection structure according to any one of claims 1 to 4, wherein the liner covering the surface of the injection material layer contains polyethylene resin as a main component.

請求項6に係る発明は、前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項1乃至5に記載の管渠結合構造に関する。 The invention according to claim 6 relates to the pipe connection structure according to claims 1 to 5, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component.

請求項7に係る発明は、手要素は、人と管渠の端部の結合部の外周に形成されたスリーブ状部と、この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされるとともに、この前記スリーブ状部の外周には、被覆部が設けられ、前記管渠とスリーブ状部には電熱線が埋設され、当該電熱線には外部電源の入力端子が備えられてなることを特徴とする、管渠用継手要素に関する。 The invention according to claim 7 is characterized in that the joint element comprises a sleeve-shaped portion formed around the outer periphery of the connecting portion between the manhole and the end of the pipe, and the thickness of the sleeve-shaped portion is at least the thickness of the pipe. In addition to the above, a covering portion is provided on the outer circumference of the sleeve-shaped portion, a heating wire is embedded in the pipe and the sleeve-shaped portion, and the heating wire is provided with an input terminal for an external power supply. It relates to a joint element for a conduit, characterized by:

請求項8に係る発明は、前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項7に記載の管渠用継手要素に関する。 The invention according to claim 8 relates to the joint element for pipe and culvert according to claim 7, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component.

請求項9に係る発明は、管渠用の人孔と、管渠の端部の管口の管渠結合構造を構築するための管渠工法であって、前記管渠結合構造は、前記人孔の壁面を被覆する注入材層と、該注入材層の表面を被覆するライナと、結合構造に用いられる、継手要素であって電熱線が埋設された継手要素と、前記管渠の内表面及び前記継手要素の内表面に、外側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、前記中間層の一方の面が前記アウターフィルムによって被覆され、前記中間層の他方の面によってインナーフィルムが被覆されてなり、前記管渠工法が、(A)前記管渠に設けられた汚水枡を取り除く工程と、(B)前記工程(A)の後、前記人孔の壁面を注入材層で被覆する工程と、(C)前記工程(B)の後、前記注入材層をライナで被覆する工程と、(D)前記工程(C)の後、前記ライナ及び結合部に継手要素を該継手要素に埋設された電熱線を外部電源からの電力を印加することで、加熱し溶着する工程と、(E)前記工程(D)の後、溶接した継手要素及び該継手要素と結合した管渠の内壁をライニングするとともに、前記管渠の内表面及び前記継手要素の内壁面に前記中間層及びインナーフィルムを介して熱可塑性樹脂のアウターフィルムを貼付してなる、工程と、(F)前記工程(E)の後、管渠内をライニングし、次いで、前記継手要素に埋設された電熱線を加熱し、前記継手要素の内壁面に設けられたアウターフィルムと中間層をライニングする工程と、(G)前記工程(F)の後、ライナ硬化後に前記管渠及び前記継手要素の内壁を被覆するインナーフィルムを取り除く工程と、を含む管渠工法に関する。 The invention according to claim 9 is a pipe and culvert construction method for constructing a pipe and culvert connection structure of a pipe manhole and a pipe mouth at the end of the pipe and culvert, wherein the pipe and culvert connection structure an injection material layer covering the wall surface of the hole ; a liner covering the surface of the injection material layer; A multilayer structure including an outer film, an intermediate layer and an inner film made of a thermoplastic resin is formed on the surface and the inner surface of the joint element from the outside, one surface of the intermediate layer is covered with the outer film, and the intermediate film is covered with the outer film. The inner film is covered by the other surface of the layer, and the culvert construction method includes the steps of (A) removing a cesspool provided in the culvert, and (B) after step (A), the person (C) after step (B), covering the potting material layer with a liner; (D) after step (C), covering the liner and and a step of heating and welding the joint element to the joint by applying power from an external power source to the heating wire embedded in the joint element, and (E) the welded joint after the step (D) The inner wall of the culvert connected to the element and the joint element is lined, and an outer film of thermoplastic resin is attached to the inner surface of the culvert and the inner wall surface of the joint element via the intermediate layer and the inner film. and (F) lining the inside of the pipe after step (E), then heating the heating wire embedded in the joint element, and forming an outer film on the inner wall surface of the joint element. and (G) after step (F), removing the inner film covering the inner walls of the pipe and the joint element after the liner is cured.

請求項10に係る発明は、前記継手要素は、前記人孔と前記管渠の結合部の外周に形成されたスリーブ状部と、この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされ、かつ、前記スリーブ状部の外周は被覆部が設けられてなることを特徴とする、請求項9に記載の管渠工法に関する。 The invention according to claim 10 is characterized in that the joint element comprises a sleeve-shaped portion formed around the outer periphery of the connecting portion between the manhole and the canal, and the thickness of the sleeve-shaped portion is at least equal to or greater than the thickness of the canal. and a covering portion is provided on the outer periphery of the sleeve-shaped portion.

請求項11に係る発明は、前記中間層は、ガラス繊維と合成樹脂組成物からなる群から選択される1種以上からなる、請求項9に記載の管渠工法に関する。 The invention according to claim 11 relates to the pipeline construction method according to claim 9, wherein the intermediate layer is made of one or more selected from the group consisting of glass fibers and synthetic resin compositions.

請求項12に係る発明は、前記人孔の壁面を被覆する注入材層は、少なくともモルタルを含むことを特徴とする、請求項9に記載の管渠工法に関する。 The invention according to claim 12 relates to the pipe and culvert construction method according to claim 9, wherein the grout layer covering the wall surface of the manhole contains at least mortar.

請求項13に係る発明は、前記注入材層の表面を被覆するライナは、主成分としてポリエチレン系樹脂を含むことを特徴とする、請求項9に記載の管渠工法に関する。 The invention according to claim 13 relates to the pipe and culvert construction method according to claim 9, wherein the liner covering the surface of the injection material layer contains polyethylene resin as a main component.

請求項14に係る発明は、前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする、請求項9に記載の管渠工法に関する。 The invention according to claim 14 relates to the pipeline construction method according to claim 9, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component.

請求項1に係る発明によれば、管渠用の人孔と、管渠の端部の管口の結合構造であって、当該結合構造は、前記人孔の壁面を被覆する注入材層と、前記注入材層の表面を覆うライナと、前記結合構造に設けられた継手要素であって、電熱線が埋設された前記継手要素と、前記電熱線の外部電源の入力端子と、前記管渠の内表面及び前記継手要素の内壁面に、表面側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、前記中間層の一方の面が前記アウターフィルムによって被覆され、前記中間層の他方の面によってインナーフィルムが被覆されてなる、管渠結合構造を特徴とする。
本発明の特徴である管渠結合構造は、外側のアウターフィルムと注入材層の表面を覆うライナを、電熱線が埋設された継手要素により、溶着し一体化することで、管口からの浸入水を確実に防ぐことができ、水漏れの虞がない。
このため、請求項1に係る管渠結合構造は、管渠の管口において優れた止水性を備えた管渠結合構造を形成することができるという作用効果を奏する。
According to the first aspect of the invention, there is provided a joint structure between a manhole for a pipe and a pipe mouth at an end of the pipe, wherein the joint structure includes an injection material layer covering the wall surface of the manhole. , a liner covering the surface of the injection material layer; a joint element provided in the joint structure, the joint element having a heating wire embedded therein; an input terminal of an external power source for the heating wire; and an inner wall surface of the joint element, a multilayer structure including an outer film, an intermediate layer, and an inner film made of thermoplastic resin is formed from the surface side, and one surface of the intermediate layer is covered with the outer film. and a pipe-and-drain joint structure in which an inner film is covered by the other surface of the intermediate layer.
The pipe joint structure, which is a feature of the present invention, is made by welding and integrating the outer film and the liner that covers the surface of the injection material layer with a joint element in which the heating wire is embedded, thereby preventing infiltration from the pipe mouth. Water can be reliably prevented, and there is no risk of water leakage.
Therefore, the pipe-and-drain joint structure according to claim 1 has the effect of being able to form a pipe-and-drain joint structure with excellent water cut-off properties at the mouth of the pipe.

請求項2に係る管渠結合構造によれば、継手要素は、人孔と、管渠結合部の外周に形成されたスリーブ状部からなり、このスリーブ状部の厚みは、少なくとも前記管渠の厚み以上であり、スリーブ状部の外周に被覆部を設けてなることを特徴としているので、スリーブ状部の外周に被覆部を設けた継手構造を有する管渠結合構造は、スリーブ状部の被覆部により覆われた管口の周囲のアウターフィルムと注入材層の表面を覆うライナを溶着するため、管口からの侵入水を防ぐことができるという作用効果を奏する。 According to the pipe joint structure according to claim 2, the joint element consists of the manhole and the sleeve-shaped portion formed on the outer periphery of the pipe joint portion, and the thickness of the sleeve-shaped portion is at least as large as that of the pipe joint. It is thicker than the sleeve-shaped portion and is characterized in that the covering portion is provided on the outer circumference of the sleeve-shaped portion. Since the outer film around the pipe mouth covered with the part is welded to the liner covering the surface of the injection material layer, it is possible to prevent water from entering from the pipe mouth.

請求項3に係る管渠結合構造によれば、中間層は、ガラス繊維と合成樹脂組成物からなる群から選択される1種以上からなるため、より優れた性能と長期間に亘り高い耐水性を維持することができるので、管渠の内周面に高い止水性及び耐久性を備えた中間層を形成することができるという作用効果を奏する。 According to the pipe and culvert connection structure according to claim 3, since the intermediate layer is made of one or more selected from the group consisting of glass fiber and synthetic resin composition, it has superior performance and high water resistance over a long period of time. can be maintained, it is possible to form an intermediate layer having high water resistance and durability on the inner peripheral surface of the culvert.

請求項4に係る管渠結合構造によれば、注入材層は、少なくともモルタルを含むことを特徴としているので、優れた耐荷性能と耐圧性能を維持することができる。このため、注入材は、優れた耐荷能力を有する管渠結合構造を形成することができるという作用効果を奏する。 According to the pipe and culvert joint structure according to claim 4, since the injection material layer contains at least mortar, it is possible to maintain excellent load bearing performance and pressure resistance performance. Therefore, the grouting material has the effect of being able to form a pipe-and-drain joint structure with excellent load-bearing capacity.

請求項5に係る管渠結合構造によれば、注入材層の表面を被覆するライナは、主成分としてポリエチレン系樹脂を含むことを特徴としているので、汎用性の高い塩化ビニル樹脂と比較しおよそ30倍程度の耐摩耗性や、耐薬品性に優れた管渠結合構造を形成することができるという作用効果を奏する。 According to the pipe and culvert connection structure according to claim 5, the liner covering the surface of the injection material layer is characterized by containing a polyethylene resin as a main component. It is possible to form a pipe-and-drain joint structure with about 30 times higher abrasion resistance and excellent chemical resistance.

請求項6に係る管渠結合構造によれば、電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする管渠結合構造であるため、耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができる。
このため、ポリエチレン系樹脂を含む管渠結合構造は、耐久性が高く、長期間にわたり管渠の老朽化を防止することができるという作用効果を奏する。
According to the pipe and culvert joint structure according to claim 6, the joint element in which the heating wire is embedded is a pipe and culvert joint structure characterized by containing polyethylene-based resin as a main component, so that it has chemical resistance and wear resistance. It is possible to form a pipe and culvert connection structure with excellent properties.
Therefore, the pipe joint structure containing the polyethylene-based resin is highly durable, and has the effect of being able to prevent deterioration of the pipe for a long period of time.

請求項7に係る管渠用継手要素によれば、継手要素は、人孔と、管渠の端部の結合部の外周に形成されたスリーブ状部からなり、このスリーブ状部の厚みは、少なくとも管渠の厚み以上とされているので、この前記スリーブ状部の外周は被覆部が設けられてなることを特徴としているので、管口だけでなく管口周囲も被覆することで、より広範囲にわたり、浸入水を防止する管渠用継手要素を形成することができるという作用効果を奏する。 According to the joint element for a conduit according to claim 7, the joint element comprises a manhole and a sleeve-shaped portion formed around the outer periphery of the connecting portion at the end of the conduit, and the thickness of this sleeve-shaped portion is Since the thickness is at least equal to or greater than the thickness of the culvert, the outer circumference of the sleeve-shaped portion is characterized by being provided with a covering portion. It is possible to form a culvert joint element that prevents intrusion of water.

請求項8に係る管渠用継手要素によれば、前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする管渠用継手要素であるため、耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができるという作用効果を奏する。 According to the joint element for a conduit according to claim 8, the joint element in which the heating wire is embedded is a joint element for a conduit characterized by containing a polyethylene resin as a main component. It is possible to form a pipe-and-drain joint structure having excellent wear resistance and wear resistance.

請求項9に係る管渠工法によれば、管渠用の人孔と、管渠の端部の管渠結合構造を構築するための管渠工法であって、前記管渠結合構造は、前記人孔の壁面を被覆する注入材層と、該注入材層の表面を被覆するライナと、結合部に設けられた、継手要素であって、電熱線が埋設された継手要素と、前記管渠の内表面及び前記継手要素の内表面に、外側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、前記中間層の一方の面が前記アウターフィルムによって被覆され、前記中間層の他方の面によってインナーフィルムが被覆されてなり、前記管渠工法が、(A)前記管渠に設けられた汚水枡を取り除く工程と、(B)前記工程(A)の後、前記人孔の壁面を注入材層で被覆する工程と、(C)前記工程(B)の後、前記注入材をライナで被覆する工程と、(D)前記工程(C)の後、前記ライナ及び結合部に継手要素を該継手要素に埋設された電熱線を外部電源からの電力を印加することで、加熱し溶着する工程と、(E)前記工程(D)の後、溶接した継手要素及び該継手要素と結合した管渠の内壁をライニングする工程とともに、前記管渠の内表面及び前記継手要素の内壁面に前記中間層及びインナーフィルムを介して熱可塑性樹脂のアウターフィルムを貼付してなる、工程と、(F)前記工程(E)の後、管渠内をライニングし、次いで、前記継手要素に埋設された電熱線を加熱し、前記継手要素の内壁面に設けられたアウターフィルムと中間層をライニングする工程と、(G)前記工程(F)の後、ライナ硬化後に前記管渠及び前記継手要素の内壁を被覆するインナーフィルムを取り除く工程と、を含んでいるので耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができる。
このため、これらの工程を電熱線による溶着により一体化することで、管渠の管口において優れた止水性を備えた管渠結合構造を形成することができるという作用効果を奏する。
According to the pipe and culvert construction method according to claim 9, there is provided a pipe and culvert construction method for constructing a manhole for a pipe and a pipe and culvert joint structure at the end of the pipe and culvert, wherein the pipe and culvert joint structure includes the A grouting material layer covering the wall surface of the manhole, a liner covering the surface of the grouting material layer , a joint element provided at the joint , the joint element having a heating wire embedded therein, and the pipe. A multilayer structure including an outer film, an intermediate layer and an inner film of thermoplastic resin is formed on the inner surface of the ditch and the inner surface of the joint element from the outside, and one surface of the intermediate layer is covered with the outer film. , the inner film is covered by the other surface of the intermediate layer, and the pipe and culvert construction method includes (A) a step of removing a sewage pit provided in the pipe and (B) after the step (A) (C) after step (B), covering the implant with a liner; (D) after step (C), after said a step of heating and welding the joint element to the liner and the joint portion by applying electric power from an external power source to the heating wire embedded in the joint element; and (E) welding after the step (D). In addition to the step of lining the joint element and the inner wall of the pipe coupled with the joint element, an outer film of thermoplastic resin is applied to the inner surface of the pipe and the inner wall surface of the joint element via the intermediate layer and the inner film. (F) after the step (E), the inside of the pipe is lined, then the heating wire embedded in the joint element is heated, and the heating wire is provided on the inner wall surface of the joint element. and (G) after step (F), removing the inner film covering the inner walls of the conduit and the joint element after the liner is cured. It is possible to form a pipe joint structure with excellent chemical resistance and abrasion resistance.
Therefore, by integrating these processes by welding with a heating wire, it is possible to form a pipe joint structure having excellent water cutoff properties at the pipe mouth of the pipe and culvert.

請求項10に係る管渠工法によれば、継手要素が人孔と、管渠の端部の結合部の外周に形成されたスリーブ状部と、このスリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされ、かつ、スリーブ状部の外周は被覆部が設けられてなることを特徴としているので、スリーブ状部の外周に被覆部を設けた継手構造は、スリーブ状部の被覆部により覆われた管口の周囲のアウターフィルムと注入材層の表面を覆うライナを溶着し、管口からの侵入水を防ぐことができるという作用効果を奏する。 According to the pipe construction method according to claim 10, the joint element comprises the manhole, the sleeve-shaped portion formed on the outer periphery of the connecting portion at the end of the pipe, and the thickness of this sleeve-shaped portion is at least and the outer circumference of the sleeve-shaped portion is provided with a covering portion. The outer film around the covered pipe mouth and the liner covering the surface of the injection material layer are welded together to produce the effect of being able to prevent intrusion of water from the pipe mouth.

請求項11に係る管渠工法によれば、中間層がガラス繊維と合成樹脂組成物からなる群から選択される1種以上から成るので、より優れた性能と長期間に亘り高い耐水性を維持することができるという作用効果を奏する。
このため、本発明の管渠工法は、管渠の内周面に高い止水性及び耐久性を備えた中間層を形成することができる。
According to the pipe construction method according to claim 11, the intermediate layer is made of one or more selected from the group consisting of glass fiber and synthetic resin composition, so that superior performance and high water resistance are maintained over a long period of time. There is an effect that it can be done.
Therefore, the culvert construction method of the present invention can form an intermediate layer with high water cutoff and durability on the inner peripheral surface of the culvert.

請求項12に係る管渠工法によれば、注入材層が、少なくともモルタルを含むことを特徴としているので、優れた耐荷性能と耐圧性能を維持することができるという作用効果を奏する。 According to the pipe and culvert construction method according to claim 12, since the grouting material layer contains at least mortar, there is an effect that excellent load bearing performance and pressure resistance performance can be maintained.

請求項13に係る管渠工法によれば、注入材層の表面を被覆するライナはが主成分としてポリエチレン系樹脂を含むことを特徴としているので、耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができるという作用効果を奏する。 According to the pipe construction method according to claim 13, the liner covering the surface of the grouting material layer is characterized by containing a polyethylene-based resin as a main component. There is an effect that a bonding structure can be formed.

請求項14に係る管渠工法によれば、電熱線が埋設された継手要素が主成分としてポリエチレン系樹脂を含むことを特徴としているので、耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができるという作用効果を奏する。 According to the pipe construction method according to claim 14, since the joint element in which the heating wire is embedded contains polyethylene resin as a main component, the pipe joint structure is excellent in chemical resistance and abrasion resistance. It is possible to form a working effect.

本発明に係る管渠工法の一実施形態において、管渠の内表面及び継手要素の内表面の断面部にアウターフィルムを貼付する工程とその構造を示す図である。FIG. 4 is a diagram showing the process and structure of attaching an outer film to the cross section of the inner surface of the culvert and the inner surface of the joint element in one embodiment of the culvert construction method according to the present invention. 本発明に係る管渠工法の一実施形態において、電熱線が埋設された継手要素を示す斜視図である。1 is a perspective view showing a joint element in which a heating wire is embedded in an embodiment of a pipe and culvert construction method according to the present invention; FIG. 本発明に係る管渠工法の一実施形態において、管渠から汚水桝を取り除く工程の、汚水桝を取り除く前を示す図である。FIG. 2 is a diagram showing a step of removing a sewage basin from a sewer in an embodiment of the sewer construction method according to the present invention, before removing the sewage basin. 本発明に係る管渠工法の一実施形態において、管渠から汚水桝を取り除く工程の、汚水桝を取り除いた後を示す図である。FIG. 4 is a diagram showing a step of removing the sewage pit from the culvert in one embodiment of the culvert construction method according to the present invention, after removing the sewage pit. 本発明に係る管渠工法の一実施形態において、人孔の壁面を注入材層で被覆した後、注入材層をライナで被覆させる工程を示す図である。FIG. 4 is a diagram showing a step of covering the wall surface of a manhole with an injection material layer and then covering the injection material layer with a liner in one embodiment of the pipe and culvert construction method according to the present invention. 本発明に係る管渠工法の一実施形態において、ライナ及び結合部に継手要素の電熱線を外部電源からの電力を印加することで、加熱し溶着する工程を示す図である。FIG. 5 is a diagram showing a process of heating and welding the heating wire of the joint element to the liner and the joint by applying electric power from an external power supply in one embodiment of the pipe and culvert construction method according to the present invention. 本発明に係る管渠工法の一実施形態において、管渠に熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造を示す、斜視図である。1 is a perspective view showing a multilayer structure of a culvert including an outer film, an intermediate layer and an inner film of thermoplastic resin in one embodiment of the culvert construction method according to the present invention. FIG. 本発明に係る管渠工法の一実施形態において、管渠内をライニングし、次いで、前記継手要素に埋設された電熱線を加熱し、前記継手要素の内壁面に設けられたアウターフィルムと中間層を溶着する工程を示す図である。In one embodiment of the pipe and culvert construction method according to the present invention, the inside of the pipe and culvert is lined, then the heating wire embedded in the joint element is heated, and the outer film and the intermediate layer provided on the inner wall surface of the joint element are heated. It is a figure which shows the process of welding.

以下、添付図面を参照しながら本発明に係る実施形態に係る管口への浸入水を防止する管渠結合構造、継手要素及び管渠工法について詳述する。 DETAILED DESCRIPTION OF THE INVENTION A pipe joint structure, a joint element, and a pipe construction method for preventing infiltration of water into pipe mouths according to embodiments of the present invention will be described below with reference to the accompanying drawings.

ここでは管渠(10)は、下水道管路の本管として例示しているが、これに限定されず、本発明の管渠結合構造、管渠用継手要素及び管渠工法は、例えば、工業用水用の管路、農業用水用の管路などにも適用可能である。また管渠の材料として、コンクリート管、陶管、塩化ビニル管などを採用することができるが、特定の材料に限られることはない。 Although the culvert (10) is exemplified here as a sewer main pipe, it is not limited to this, and the culvert connection structure, the culvert joint element and the culvert construction method of the present invention can be used, for example, in industrial It can also be applied to pipelines for irrigation water, pipelines for agricultural water, and the like. As the material for the culverts, concrete pipes, ceramic pipes, vinyl chloride pipes, etc. can be used, but the material is not limited to any particular material.

本発明に含まれるポリエチレン系樹脂には、ポリエチレン、超低密度ポリエチレン、低密度ポリエチレン、直鎖上低密度ポリエチレン、高密度ポリエチレン、超高分子量ポリエチレンやEVA樹脂等が使用される。 Polyethylene-based resins included in the present invention include polyethylene, ultra-low density polyethylene, low-density polyethylene, linear low-density polyethylene, high-density polyethylene, ultra-high molecular weight polyethylene, EVA resin, and the like.

<管渠用の人孔と管渠の端部の結合部の管渠用継手構造>
図2は、本発明の一実施形態である、電熱線が埋設された継手要素を示す斜視図である。
本発明の一実施形態である、電熱線(6)が埋設された継手要素(2)は、図2に示すように人孔(1)と管渠(10)の結合部の外周に形成されたスリーブ状部(8)からなり、スリーブ状部(8)の厚みは、少なくとも前記管渠の厚み以上であり、スリーブ状部の外周に被覆部(7)を有し、この継手要素(2)は主成分としてポリエチレン系樹脂を含む管渠用継手要素を有している。ポリエチレン系樹脂に含まれる組成物は、前述のとおりである。
<Conduit joint structure of joint between conduit manhole and conduit end>
FIG. 2 is a perspective view showing a joint element in which a heating wire is embedded, which is one embodiment of the present invention.
A joint element (2) in which a heating wire (6) is embedded, which is one embodiment of the present invention, is formed on the outer periphery of the joint between the manhole (1) and the pipe (10) as shown in FIG. The thickness of the sleeve-shaped part (8) is at least equal to or greater than the thickness of the conduit, and the sleeve-shaped part has a covering part (7) on its outer circumference. ) has a pipe joint element containing polyethylene resin as a main component. The composition contained in the polyethylene-based resin is as described above.

<管渠用の人孔と管渠の端部の管渠結合構造>
図1は、本発明に係る管渠工法の一実施形態において、管渠の内表面及び継手要素の内表面の断面部にアウターフィルムを貼付する工程と構造を示す図である。
本発明の実施形態である管渠用の人孔と管渠の管渠結合構造であって、当該管渠結合構造は、人孔(1)の壁面を被覆する注入材層(3)と、当該注入材層(3)の表面を覆うライナ(4)と、前記結合部に設けられた継手要素(2)であって、電熱線(6)が埋設された継手要素(2)と、電熱線(6)の外部電源の入力端子(11)と、管渠(10)の内表面及び継手要素(2)の内壁面に、外側から、熱可塑性樹脂のアウターフィルム(5)、中間層(12)及びインナーフィルム(13)を含む多層構造が構成され、中間層(12)の一方の面がアウターフィルム(5)によって被覆され、中間層(12)の他方の面によってインナーフィルム(13)が被覆されてなる中間層(12)を含む管渠結合構造を有している。
<Manhole for culvert and pipe connection structure at the end of the culvert>
FIG. 1 is a view showing the process and structure of attaching an outer film to the cross section of the inner surface of a culvert and the inner surface of a joint element in an embodiment of the culvert construction method according to the present invention.
A manhole-to-canal connection structure for a canal, which is an embodiment of the present invention, comprising: an injection material layer (3) covering the wall surface of the manhole (1); A liner (4) covering the surface of the injection material layer (3), a joint element (2) provided at the joint and having a heating wire (6) embedded therein, On the input terminal (11) of the external power supply of the hot wire (6), the inner surface of the pipe (10) and the inner wall surface of the joint element (2), from the outside, the outer film (5) of thermoplastic resin, the intermediate layer ( 12) and an inner film (13), one side of the intermediate layer (12) is covered by the outer film (5), and the other side of the intermediate layer (12) covers the inner film (13). has a conduit joint structure including an intermediate layer (12) coated with

スリーブ状部(8)の厚みは、0.8mmで調整することが望ましい。 It is desirable to adjust the thickness of the sleeve-shaped portion (8) to 0.8 mm.

注入材層(3)におけるモルタル組成物のモルタル及びその他組成物の含有率は特に限定されないが、中間層(12)の厚みの耐久性を調節することができる。なお、中間層の厚みは標準で50mmであるが、人孔の構造によりその都度、厚みを調整してもよい。 Although the content of mortar and other compositions in the mortar composition in the grouting material layer (3) is not particularly limited, the durability of the thickness of the intermediate layer (12) can be adjusted. The thickness of the intermediate layer is 50 mm as standard, but the thickness may be adjusted depending on the structure of the manhole.

アウターフィルム(5)は、熱可塑性樹脂からなり、熱可塑性樹脂として例えば、ABS樹脂、ポリエチレン、ポリスチレン、ポリプロピレン、塩化ビニル樹脂、ポリエチレンテレフタラート、ポリカーボネイト、ポリブチレンテレフタラート、ポリアセタール、ポリイミド、ポリフェニレンスルフィド、液晶ポリマー等が使用される。
アウターフィルム(5)は、厚みが0.8mmで調整することが望ましい。
アウターフィルム(5)の厚みが薄いと、管渠(10)及び継手要素(2)との密着性が高くなり、層間分離が発生する可能性は低くなる。厚みが増すと、強度は高くなるが、ライナ貼り付け後の全体が厚くなることで、補修後の管渠(10)の内径が縮小し、管内の流下能力が下がる。このため、層間分離が発生せず、強度が高く、尚且つ管渠の内径をなるべく広く確保できる管渠を得るために、アウターフィルム(5)を薄くすることが肝要である。
The outer film (5) is made of a thermoplastic resin such as ABS resin, polyethylene, polystyrene, polypropylene, vinyl chloride resin, polyethylene terephthalate, polycarbonate, polybutylene terephthalate, polyacetal, polyimide, polyphenylene sulfide, A liquid crystal polymer or the like is used.
The thickness of the outer film (5) is desirably adjusted to 0.8 mm.
If the thickness of the outer film (5) is thin, the adhesion to the conduit (10) and the joint element (2) will be high, and the possibility of interlayer separation will be low. As the thickness increases, the strength increases, but the overall thickness after the liner is attached reduces the inner diameter of the culvert (10) after repair, lowering the flow capacity inside the pipe. For this reason, it is important to make the outer film (5) thin in order to obtain a culvert that does not cause interlayer separation, has high strength, and can secure the inner diameter of the culvert as wide as possible.

図6で示すように中間層(12)は、ガラス繊維と合成樹脂組成物からなる群から成り、例えばガラス繊維は、ARガラス繊維、Cガラス繊維、Eガラス繊維やECRガラス繊維等が使用され、合成樹脂組成物は、不飽和ポリエステル樹脂又はビニルエステル樹脂等から選択される。 As shown in FIG. 6, the intermediate layer (12) is composed of a group consisting of glass fiber and a synthetic resin composition. For example, the glass fiber may be AR glass fiber, C glass fiber, E glass fiber, ECR glass fiber, or the like. , the synthetic resin composition is selected from unsaturated polyester resins, vinyl ester resins, and the like.

<管渠用の人孔と、管渠の端部の管渠結合構造を構築するための管渠工法>
図1、図3~5及び図7は、本発明の一実施形態に係る管渠用の人孔と、管渠の端部の管渠結合構造を構築するための管渠工法を工程毎に示した図である。
<Conduit construction method for constructing a pipe manhole and a pipe joint structure at the end of the pipe>
FIGS. 1, 3 to 5 and 7 show a pipe and culvert construction method for constructing a pipe and culvert manhole according to one embodiment of the present invention and a pipe and culvert connection structure at the end of the pipe and culvert, step by step. It is a diagram showing.

図3は、本発明の工法における一実施形態において、管渠(10)に設けられた汚水枡(9)を取り除く工程である。管渠(10)に設けられた老朽化した汚水桝(9)を撤去し、浸入水を防ぐ。 FIG. 3 shows a step of removing the sewage basin (9) provided in the culvert (10) in one embodiment of the construction method of the present invention. Remove the old sewage pit (9) installed in the culvert (10) to prevent infiltration of water.

<PML工法>
図4は、本発明に係る管渠工法の一実施形態において、人孔の壁面を注入材層で被覆した後、注入材をライナで被覆させる工程を示す図である。
人孔(1)の壁面を注入材で被覆し注入材層(3)を形成後、注入材層(3)をライナ(4)で被覆する。注入材(3)を形成する際、人孔(1)とライナ(4)の間に型枠を設置し、注入材層(3)の形状を固定しても良い。またライナは、注入材層(3)の被覆面側にV字型のアンカーを設けてもよく、前記V字型のアンカーにより、注入材層(3)の耐荷性能を向上する。また前記V字型アンカーを設けることで、注入材層(3)とライナ(4)との密着性が向上し、浸入水を防止できる。
<PML construction method>
FIG. 4 is a diagram showing a step of covering the wall surface of a manhole with an injection material layer and then covering the injection material with a liner in an embodiment of the pipe and culvert construction method according to the present invention.
After the walls of the manhole (1) are coated with the grout to form the grout layer (3), the grout layer (3) is covered with the liner (4). When forming the grout (3), a mold may be placed between the manhole (1) and the liner (4) to fix the shape of the grout layer (3). In addition, the liner may be provided with V-shaped anchors on the covering surface side of the grouting material layer (3), and the V-shaped anchors improve the load bearing performance of the grouting material layer (3). Further, by providing the V-shaped anchor, the adhesion between the grouting material layer (3) and the liner (4) is improved, and intrusion of water can be prevented.

図5は、本発明に係る管渠工法の一実施形態において、ライナ及び結合部に継手要素の電熱線を外部電源からの電力を印加することで、加熱し溶着する工程を示す図である。
ライナ(4)と結合部に、継手要素(2)を継手要素(2)に埋設された電熱線(6)を外部電源の入力端子(11)からの電力を印加することで、加熱し溶着を行うことで、管渠の結合部に継手要素(2)を接続する。この工法をPML工法と呼ぶ。外部電源の入力端子(11)は電熱線(6)に電力を印加できれば、その他当業者が使用し得るあらゆる外部電源の入力端子が利用可能であることは言うまでもない。また外部電力の入力端子(11)に電力を印加された電熱線(6)の温度は、摂氏240度前後であることが望ましい。
FIG. 5 is a diagram showing a process of heating and welding the heating wire of the joint element to the liner and the joint by applying power from an external power supply in one embodiment of the pipe construction method according to the present invention.
A heating wire (6) embedded in the joint element (2) is heated and welded by applying power from an input terminal (11) of an external power supply to the joint element (2) between the liner (4) and the joint. to connect the coupling element (2) to the joint of the conduit. This construction method is called the PML construction method. As long as the input terminal (11) of the external power supply can apply power to the heating wire (6), it goes without saying that any other input terminal of the external power supply that can be used by those skilled in the art can be used. The temperature of the heating wire (6) to which power is applied to the input terminal (11) for external power is preferably around 240 degrees Celsius.

<フラッシュライニング-S工法>
図1は、本発明に係る管渠工法の一実施形態において、管渠に熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造を示す、斜視図である。
管渠(10)の内表面と内壁面に、中間層(12)とインナーフィルム(13)を介して熱可塑性樹脂のアウターフィルムを貼付し、その後、管渠内をライニングし、中間層(12)を硬化する。
<Flash lining - S method>
FIG. 1 is a perspective view showing a multilayer structure including a thermoplastic resin outer film, an intermediate layer and an inner film in a conduit in one embodiment of the conduit construction method according to the present invention.
A thermoplastic resin outer film is attached to the inner surface and inner wall surface of the conduit (10) via the intermediate layer (12) and the inner film (13). ) is cured.

図7は本発明に係る管渠工法の一実施形態において、管渠内をライニングし、次いで、前記継手要素に埋設された電熱線を加熱し、前記継手要素の内壁面に設けられたアウターフィルムと中間層を溶着する工程を示す図である。継手要素(2)に埋設された電熱線(6)を加熱し、継手要素(2)の内壁面に設けられたアウターフィルム(5)と中間層(12)をライニングする。
この工法により、管渠(10)と継手要素(2)を強固に溶着し、管口からの浸入水を防止することが可能となる。
FIG. 7 shows an embodiment of the pipe and culvert construction method according to the present invention. and an intermediate layer are shown. A heating wire (6) embedded in the joint element (2) is heated to line the outer film (5) and the intermediate layer (12) provided on the inner wall surface of the joint element (2).
By this construction method, the culvert (10) and the joint element (2) are strongly welded, and it becomes possible to prevent water from entering from the pipe mouth.

図示してはいないが、ライナ硬化後に管渠(10)及び継手要素(2)の内壁を被覆するインナーフィルム(13)を取り除くことで、耐薬品性や耐摩耗性に優れた管渠結合構造を形成することができる。
このため、これらの工程を電熱線による溶着により一体化することで、管渠の管口において優れた止水性を備えた管渠結合構造を形成することができる。
Although not shown, the inner film (13) covering the inner walls of the conduit (10) and the joint element (2) is removed after the liner is cured to provide a conduit connection structure with excellent chemical resistance and abrasion resistance. can be formed.
Therefore, by integrating these steps by welding with a heating wire, it is possible to form a pipe joint structure having excellent water cut-off properties at the mouth of the pipe and culvert.

本発明の管渠工法には、フラッシュライニング-S工法施工後に、管渠の開削による取付管を設置するため、取付管部分に電熱線(6)が埋設された取付管用の継手構造(2)を設ける工程と当該継手構造(2)とアウターフィルム(5)とを溶着する工程が含まれても良い。 In the pipe construction method of the present invention, a joint structure (2) for the installation pipe in which the heating wire (6) is embedded in the installation pipe part in order to install the installation pipe by excavating the pipe after the flash lining-S construction method is executed. and welding the joint structure (2) and the outer film (5).

以下、本発明の管渠結合構造、管渠用継手構造及び管渠工法について実施例に基づき更に詳細に説明する。但し、本発明は以下の実施例に何ら限定されるものではない。 BEST MODE FOR CARRYING OUT THE INVENTION The pipe joint structure, pipe joint structure and pipe construction method of the present invention will be described below in more detail based on examples. However, the present invention is by no means limited to the following examples.

本発明の管渠工法により形成されたマンホールは、JSWAS A-11「下水道鉄筋コンクリート製組立マンホール」の規格値以上の耐荷能力を有することを外圧試験により実証した。
JSWAS A-11「下水道鉄筋コンクリート製組立マンホール」の規格値は以下のとおりである。
(1)軸方向耐圧強さが、150kN以上
(2)側方曲げ強さが、ひび割れ6.9kN/m(6.21kN/0.9m)、破壊10.4kN/m(9.36kN/0.9m)以上
これらの物理的強度について確認するため、試験体を用いた各種耐性試験をおこなった。
It was verified by an external pressure test that the manhole formed by the pipe and ditch construction method of the present invention has a load-bearing capacity equal to or higher than the standard value of JSWAS A-11 "Sewer Reinforced Concrete Assembled Manhole".
The standard values of JSWAS A-11 "Prefabricated reinforced concrete sewage manholes" are as follows.
(1) Axial compressive strength of 150 kN or more (2) Side bending strength of 6.9 kN/m (6.21 kN/0.9 m) for cracking and 10.4 kN/m (9.36 kN/0 for breaking) .9m) In order to confirm the above physical strength, various resistance tests were conducted using test specimens.

試験は、以下の試験区で行った。
以下に示す表は、本発明の管渠結合構造、管渠用継手構造及び管渠工法の一実施例であるPML工法から造られた試験体を従来品から20mm減肉した試験区と、試験体の肉厚を20mm減肉した試験体との物理的強度を比較したものである。
The test was conducted in the following test plots.
The table shown below shows a test section in which the thickness of a test body made by the PML construction method, which is an embodiment of the pipe joint structure, pipe joint structure, and pipe construction method of the present invention, was reduced by 20 mm from the conventional product, and the test It compares the physical strength with a test piece whose body thickness is reduced by 20 mm.

<耐性試験1>

Figure 0007224007000002
<Resistance test 1>
Figure 0007224007000002

試験の結果、本発明の管渠結合構造を形成する管渠工法の一実施例であるPML工法は、耐圧性及び曲げ強さにおいて、施工後の人孔は、JSWAS A-11「下水道鉄筋コンクリート製組立マンホール」の規格値以上の耐荷能力を有することが判明した。
(1)軸方向耐圧強さが、150kN以上
(2)側方曲げ強さが、ひび割れ6.9kN/m(6.21kN/0.9m)、破壊10.4kN/m(9.36kN/0.9m)以上の優れた強度を有することが判明した。
As a result of the test, the PML construction method, which is an example of the pipe and culvert construction method for forming the pipe and culvert connection structure of the present invention, has a pressure resistance and bending strength, and the manhole after construction conforms to JSWAS A-11 "Sewage Reinforced Concrete It was found to have a load-bearing capacity greater than the standard value of "Assembled Manhole".
(1) Axial compressive strength of 150 kN or more (2) Side bending strength of 6.9 kN/m (6.21 kN/0.9 m) for cracking and 10.4 kN/m (9.36 kN/0 for breaking) It was found to have excellent strength of 0.9 m) or more.

また試験において、ライナと注入材層の優れた密着性により耐荷性が向上し浸入水をより効果的に防止できることがわかった。 Also, in tests, it was found that the excellent adhesion between the liner and the grout layer improves the load carrying capacity and more effectively prevents water intrusion.

試験の結果、本発明の管渠結合構造は、下水道用強化プラスチック複合管(JSWAS K-2)と同等以上の耐久性及び耐薬品性を備えていることがわかった。 As a result of the test, it was found that the culvert connection structure of the present invention has durability and chemical resistance equal to or greater than that of sewage reinforced plastic composite pipe (JSWAS K-2).

本発明に係る管渠結合構造、継手要素及び管渠工法は、下水道用管渠から上水道用管渠、工業用水用の管路、農業用水用の管路等、幅広い種類の管渠に適用可能であり、尚且つ本発明に係る管渠の工法は、管渠の管口への浸入水を防止する管渠結合構造を形成できることから、管口への浸入水を防止するための管渠や既設管渠の更生工法として最適な管渠結合構造、継手要素及び管渠工法を提供できる。 INDUSTRIAL APPLICABILITY The pipe connection structure, joint element, and pipe construction method according to the present invention can be applied to a wide variety of pipes such as sewage pipes, water supply pipes, industrial water pipes, and agricultural water pipes. In addition, since the pipe construction method according to the present invention can form a pipe joint structure that prevents water from entering the pipe mouth, it is possible to prevent water from entering the pipe mouth. It is possible to provide a pipe joint structure, a joint element, and a pipe construction method that are optimal as a rehabilitation method for existing pipes.

1 人孔
2 継手要素
3 注入材層
4 ライナ
5 アウターフィルム
6 電熱線
7 被覆部
8 スリーブ状部
9 汚水桝
10 管渠
11 外部電源の入力端子
12 中間層
13 インナーフィルム
REFERENCE SIGNS LIST 1 manhole 2 joint element 3 grout layer 4 liner 5 outer film 6 heating wire 7 coating 8 sleeve-shaped portion 9 sewage basin 10 pipe 11 external power input terminal 12 intermediate layer 13 inner film

Claims (14)

管渠用の人孔と、管渠の端部の管口の結合構造であって、当該結合構造は、
前記人孔の壁面を被覆する注入材層と、
前記注入材層の表面を覆うライナと、
前記結合構造に用いられるに設けられた継手要素であって、電熱線が埋設された前記継手要素と、
前記電熱線の外部電源の入力端子と、
前記管渠の内表面及び前記継手要素の内壁面に、表面側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、
前記中間層の一方の面が前記アウターフィルムによって被覆され、
前記中間層の他方の面によってインナーフィルムが被覆されてなる、
ことを特徴とする管渠結合構造。
A connection structure between a manhole for a culvert and a pipe mouth at the end of the culvert, the connection structure comprising:
a grout layer covering the wall surface of the manhole;
a liner covering the surface of the injectant layer;
a joint element used in the joint structure, the joint element having a heating wire embedded therein;
an input terminal of an external power supply for the heating wire;
A multilayer structure including an outer film, an intermediate layer and an inner film of a thermoplastic resin is formed on the inner surface of the conduit and the inner wall surface of the joint element from the surface side,
one surface of the intermediate layer is covered with the outer film;
An inner film is covered by the other surface of the intermediate layer,
A pipe connection structure characterized by:
前記継手要素は、前記人孔と、前記管渠の結合部の外周に形成されたスリーブ状部と、
この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされ、
前記スリーブ状部の外周は被覆部が設けられてなることを特徴とする、請求項1に記載の管渠結合構造。
The joint element includes the manhole, a sleeve-shaped portion formed on the outer periphery of the connecting portion of the pipe and culvert,
The thickness of the sleeve-shaped portion is at least equal to or greater than the thickness of the conduit,
2. The pipe connection structure according to claim 1, wherein a covering portion is provided on the outer periphery of said sleeve-shaped portion.
前記中間層は、ガラス繊維と合成樹脂組成物からなる群から選択される1種以上からなる、請求項1に記載の管渠結合構造。 2. The pipe connection structure according to claim 1, wherein said intermediate layer is made of one or more selected from the group consisting of glass fiber and synthetic resin composition. 前記注入材層は、少なくともモルタルを含むことを特徴とする、請求項1に記載の管渠結合構造。 The conduit connection structure according to claim 1, characterized in that said grout layer comprises at least mortar. 前記注入材層の表面を被覆するライナは、主成分としてポリエチレン系樹脂を含むことを特徴とする、請求項1に記載の管渠結合構造。 2. The pipe connection structure according to claim 1, wherein the liner covering the surface of the grouting material layer contains polyethylene resin as a main component. 前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項1乃至5に記載の管渠結合構造。 The pipe connection structure according to any one of claims 1 to 5, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component. 手要素は、人と管渠の端部の結合部の外周に形成されたスリーブ状部と、
この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされるとともに、
この前記スリーブ状部の外周には、被覆部が設けられ
前記管渠とスリーブ状部には電熱線が埋設され、
当該電熱線には外部電源の入力端子が備えられてなることを特徴とする、管渠用継手要素。
The coupling element comprises a sleeve-shaped portion formed around the outer circumference of the joint between the manhole and the end of the canal ;
The thickness of the sleeve-shaped portion is at least equal to or greater than the thickness of the conduit,
A covering portion is provided on the outer periphery of the sleeve-shaped portion ,
A heating wire is embedded in the pipe and the sleeve-shaped portion,
A joint element for a conduit, characterized in that the heating wire is provided with an input terminal for an external power source .
前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項7に記載の管渠用継手要素。 8. The pipe joint element according to claim 7, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component. 管渠用の人孔と、管渠の端部の管口の管渠結合構造を構築するための管渠工法であって、
前記管渠結合構造は、
前記人孔の壁面を被覆する注入材層と、
該注入材層の表面を被覆するライナと
渠結合構造に設けられた、継手要素であって電熱線が埋設された継手要素と、
前記管渠の内表面及び前記継手要素の内表面に、表面側から、熱可塑性樹脂のアウターフィルム、中間層及びインナーフィルムを含む多層構造が構成され、
前記中間層の一方の面が前記アウターフィルムによって被覆され、
前記中間層の他方の面によってインナーフィルムが被覆されてなり、
前記管渠工法が、
(A)前記管渠に設けられた汚水枡を取り除く工程と、
(B)前記工程(A)の後、前記人孔の壁面を注入材層で被覆する工程と、
(C)前記工程(B)の後、前記注入材層をライナで被覆する工程と、
(D)前記工程(C)の後、前記ライナ及び結合部に継手要素を該継手要素に埋設された電熱線を外部電源からの電力を印加することで、加熱し溶着する工程と、
(E)前記工程(D)の後、溶接した継手要素及び該継手要素と結合した管渠の内壁をライニングするとともに、前記管渠の内表面及び前記継手要素の内壁面に前記中間層及びインナーフィルムを介して熱可塑性樹脂のアウターフィルムを貼付してなる、工程と、
(F)前記工程(E)の後、管渠の管内をライニングし、次いで、前記継手要素に埋設された電熱線を加熱し、前記継手要素の内壁面に設けられたアウターフィルムと中間層をライニングする工程と、
(G)前記工程(F)の後、ライナ硬化後に前記管渠及び前記継手要素の内壁を被覆するインナーフィルムを取り除く工程と、を含む管渠工法。
A pipe construction method for constructing a pipe joint structure of a pipe manhole and a pipe mouth at the end of the pipe, comprising:
The conduit connection structure includes:
a grout layer covering the wall surface of the manhole;
a liner covering the surface of the grout layer ;
a joint element in which the heating wire is embedded and which is a joint element provided in the pipe- and-drain joint structure;
A multilayer structure including an outer film, an intermediate layer and an inner film of a thermoplastic resin is formed on the inner surface of the conduit and the inner surface of the joint element from the surface side,
one surface of the intermediate layer is covered with the outer film;
An inner film is covered with the other surface of the intermediate layer,
The pipe construction method is
(A) removing a cesspool provided in the culvert;
(B) after step (A), covering the walls of the manhole with a grout layer;
(C) after step (B), covering the injectant layer with a liner;
(D) after the step (C), a step of heating and welding the joint element to the liner and the joint portion by applying electric power from an external power supply to the heating wire embedded in the joint element;
(E) After the step (D), lining the welded joint element and the inner wall of the pipe coupled with the joint element, and applying the intermediate layer and the inner layer to the inner surface of the pipe and the inner wall surface of the joint element. a step of attaching an outer film of a thermoplastic resin via a film;
(F) After the step (E), the inside of the pipe is lined, and then the heating wire embedded in the joint element is heated to remove the outer film and the intermediate layer provided on the inner wall surface of the joint element. a lining process;
(G) removing the inner film covering the inner walls of the conduit and the joint element after the liner is cured after the step (F).
前記継手要素は、前記人孔と前記管渠の結合部の外周に形成されたスリーブ状部と、
この前記スリーブ状部の厚みは、少なくとも前記管渠の厚み以上とされ、かつ、
前記スリーブ状部の外周は被覆部が設けられてなることを特徴とする、請求項9に記載の管渠工法。
The joint element includes a sleeve-shaped portion formed on the outer periphery of the connecting portion of the manhole and the canal;
The thickness of the sleeve-shaped portion is at least equal to or greater than the thickness of the conduit, and
10. The pipe and culvert construction method according to claim 9, wherein the outer periphery of said sleeve-shaped portion is provided with a covering portion.
前記中間層は、ガラス繊維と合成樹脂組成物からなる群から選択される1種以上からなる、請求項9に記載の管渠工法。 The conduit construction method according to claim 9, wherein the intermediate layer is made of one or more selected from the group consisting of glass fibers and synthetic resin compositions. 前記人孔の壁面を被覆する注入材層は、少なくともモルタルを含むことを特徴とする、
請求項9に記載の管渠工法。
The injection material layer covering the wall surface of the manhole contains at least mortar,
The pipe construction method according to claim 9.
前記注入材層の表面を被覆するライナは、主成分としてポリエチレン系樹脂を含むことを特徴とする、請求項9に記載の管渠工法。 10. The pipe and culvert construction method according to claim 9, wherein the liner that coats the surface of the injection material layer contains polyethylene resin as a main component. 前記電熱線が埋設された継手要素は、主成分としてポリエチレン系樹脂を含むことを特徴とする請求項9乃至13に記載の管渠工法。 The pipeline construction method according to any one of claims 9 to 13, wherein the joint element in which the heating wire is embedded contains polyethylene resin as a main component.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001065042A (en) 1999-08-30 2001-03-13 Sekisui Chem Co Ltd Saddle for branch pipe and branch pipeline forming method using it
JP2005205767A (en) 2004-01-23 2005-08-04 Kfc Ltd Lining material and joining structure of lining material
JP2006097368A (en) 2004-09-30 2006-04-13 Takiron Co Ltd Manhole repairing structure
JP2016011580A (en) 2014-06-05 2016-01-21 西川ゴム工業株式会社 Earthquake-resisting method of connection part of existing pipe and manhole side wall and water cut-off structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0540693U (en) * 1991-10-30 1993-06-01 ニホンブレーン株式会社 Branch pipe branch lining material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001065042A (en) 1999-08-30 2001-03-13 Sekisui Chem Co Ltd Saddle for branch pipe and branch pipeline forming method using it
JP2005205767A (en) 2004-01-23 2005-08-04 Kfc Ltd Lining material and joining structure of lining material
JP2006097368A (en) 2004-09-30 2006-04-13 Takiron Co Ltd Manhole repairing structure
JP2016011580A (en) 2014-06-05 2016-01-21 西川ゴム工業株式会社 Earthquake-resisting method of connection part of existing pipe and manhole side wall and water cut-off structure

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