JPH0557035U - Water stop material - Google Patents

Water stop material

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Publication number
JPH0557035U
JPH0557035U JP37092U JP37092U JPH0557035U JP H0557035 U JPH0557035 U JP H0557035U JP 37092 U JP37092 U JP 37092U JP 37092 U JP37092 U JP 37092U JP H0557035 U JPH0557035 U JP H0557035U
Authority
JP
Japan
Prior art keywords
water
peripheral surface
annular
sewer pipe
pipe
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
Application number
JP37092U
Other languages
Japanese (ja)
Inventor
秀一 鈴木
昭道 龍谷
Original Assignee
早川ゴム株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 早川ゴム株式会社 filed Critical 早川ゴム株式会社
Priority to JP37092U priority Critical patent/JPH0557035U/en
Publication of JPH0557035U publication Critical patent/JPH0557035U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】 マンホール壁体と、ヒューム管、塩化ビニル
管、陶管等の下水道管渠とを接合するのに際し、施工を
簡単にでき、下水道工事現場を迅速に埋め戻すことがで
き、不等沈下に対応でき、しかも止水性能を長期に亘っ
て保持できるようにすることである。 【構成】 下水道管渠5の外周面とコンクリート製マン
ホールの壁面貫通孔6との間に止水材1を設置する。加
硫ゴム製の円環状本体2の内周面に円環状突起と円環状
の溝2hとが形成される。円環状本体2の外周面に円環状
の突起2e, 2f, 2gと溝2iとを形成する。水膨脹ゴム製の
円環状水膨脹材3A,3Bが、円環状の溝2h, 2iにそれ
ぞれ固定される。止水材1を下水道管渠5の外周面に嵌
め込み、下水道管渠5を壁面貫通孔6に挿入する。止水
材1の各円環状突起が圧縮され、変形する。
(57) [Summary] [Purpose] When joining a manhole wall and a sewer pipe such as a fume pipe, a vinyl chloride pipe, or a ceramic pipe, the construction can be simplified and the sewer construction site can be quickly backfilled. Therefore, it is possible to cope with uneven settlement and to maintain the water stopping performance for a long period of time. [Structure] The water blocking material 1 is installed between the outer peripheral surface of the sewer pipe 5 and the wall surface through hole 6 of the concrete manhole. An annular protrusion and an annular groove 2h are formed on the inner peripheral surface of the annular body 2 made of vulcanized rubber. Annular projections 2e, 2f, 2g and grooves 2i are formed on the outer peripheral surface of the annular body 2. The ring-shaped water expansion members 3A, 3B made of water-expanded rubber are fixed in the ring-shaped grooves 2h, 2i, respectively. The water stop material 1 is fitted into the outer peripheral surface of the sewer pipe 5, and the sewer pipe 5 is inserted into the wall surface through hole 6. Each annular protrusion of the water blocking material 1 is compressed and deformed.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial application]

本考案は、プレハブ式コンクリート製マンホールと下水道管渠との接合部に使 用できる止水材に関するものである。 The present invention relates to a water blocking material that can be used at a joint between a prefabricated concrete manhole and a sewer pipe.

【0002】[0002]

【従来の技術】[Prior Art]

マンホールと、ヒューム管、塩化ビニール管、陶管等の下水道管渠との接合方 法が、幾つか知られている。 まず、下水道管渠の外形よりも大きい内径を有する貫通孔をマンホールの外壁 に予め開けておき、この貫通孔に管渠を取り付け、モルタルを打ち込んでマンホ ールと下水道管渠との隙間を無くする方法がある。 しかし、この方法では、マンホールとモルタル、モルタルと管渠とは材料が異 なるため、それぞれの接合が弱く、水が滲み出す。また、マンホールと下水道管 渠とは基礎形状が異なり、受ける荷重が違うため、埋め戻し後の沈下量が異なり 、不等沈下が起る。この結果、マンホールジョイント付近の下水管に集中的に力 が働き、管が破損する。また、モルタルが硬化するまで時間がかかるため、早期 に埋め戻しできない。このため、交通の混雑、渋滞の原因となるし、また下水道 工事現場が危険である。 There are several known methods for joining manholes to fume pipes, vinyl chloride pipes, ceramic pipes, and other sewer pipes. First, a through hole with an inner diameter larger than the outer diameter of the sewer pipe is opened in advance on the outer wall of the manhole, a pipe is attached to this through hole, and mortar is driven in to eliminate the gap between the manhole and the sewer pipe. There is a way to do it. However, in this method, the manhole and the mortar are different in material, and the mortar and the pipe are different in material. In addition, since the manhole and sewer pipes have different basic shapes and different loads, the amount of subsidence after backfilling is different and uneven subsidence occurs. As a result, the force is concentrated on the sewer pipe near the manhole joint and the pipe is damaged. Moreover, since it takes time for the mortar to harden, it cannot be backfilled early. Therefore, it causes traffic congestion and congestion, and the sewer construction site is dangerous.

【0003】 また、マンホールの貫通孔の内周面に水膨脹止水材を貼りつけ、管渠の方に水 膨脹ゴムを装着し、両者の隙間に特殊ボンド又は無収縮モルタルを充填する方法 がある。これにより止水性が向上し、変位荷重は緩和される。しかし、現場での 作業に非常に手間がかかるし、しかもモルタルが硬化した後でなければ埋め戻し できない。In addition, there is a method in which a water-expanding waterproof material is attached to the inner peripheral surface of the through hole of the manhole, a water-expanding rubber is attached to the conduit, and a special bond or non-shrink mortar is filled in the gap between the two. is there. As a result, the waterproofness is improved and the displacement load is relieved. However, on-site work is very time-consuming and can only be backfilled after the mortar has hardened.

【0004】 また、フランジの付いた筒状のジョイント材を用い、マンホールの壁面とジョ イント材を接着剤やアンカーボルトで固定し、管渠とジョイント材をバンド等で 締付ける方法がある。しかし、マンホール壁面に水が付いていると、ジョイント 材が接着せず、止水性能が著しく低下する。また、ジョイント材の取り付けに非 常に手間がかかる。Further, there is a method of using a tubular joint material with a flange, fixing the wall surface of the manhole and the joint material with an adhesive or an anchor bolt, and tightening the conduit and the joint material with a band or the like. However, if water is attached to the wall surface of the manhole, the joint material will not adhere and the waterproof performance will be significantly reduced. Also, it takes a lot of time and effort to attach the joint material.

【0005】[0005]

【考案が解決しようとする課題】[Problems to be solved by the device]

本考案の課題は、施工を簡単にでき、下水道工事現場を迅速に埋め戻すことが でき、不等沈下に対応でき、しかも止水性能を長期間に亘って保持できるような 、止水材を提供することである。 The object of the present invention is to provide a waterproof material that can be easily installed, can quickly backfill the sewer construction site, can cope with uneven settlement, and can maintain its waterproof performance for a long period of time. Is to provide.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

本考案は、下水道管渠の外周面とコンクリート製マンホールの壁面貫通孔との 間に設置すべき止水材であって、内周面と外周面とにそれぞれ円環状の突起と溝 とを備えた加硫ゴム製の円環状本体、この円環状本体の内周面の前記溝に固定さ れた水膨脹ゴム製の円環状水膨脹材及び前記円環状本体の外周面の前記溝に固定 された水膨脹ゴム製の円環状水膨脹材を有する止水材に係るものである。 The present invention is a waterproofing material to be installed between the outer peripheral surface of a sewer pipe and the wall through-hole of a concrete manhole, which has annular projections and grooves on the inner peripheral surface and the outer peripheral surface, respectively. An annular body made of vulcanized rubber, a water expansion material made of water-expanded rubber fixed to the groove on the inner peripheral surface of the annular body, and fixed to the groove formed on the outer peripheral surface of the annular body. The present invention relates to a waterproof material having an annular water expansion material made of water expansion rubber.

【0007】[0007]

【実施例】【Example】

図1は、本考案の実施例に係る止水材1の幅方向断面図、図2は止水材1の正 面図である(図1において右側から見た)。 この止水材1は、全体として円環状をなしている。止水材1の円環状本体2は 複雑な形状をしている。具体的には、円環状本体2の内周面に、やはり円環状の 小突起2a, 2b, 2c, 2dが形成されている。円環状本体2の外周面には、円環状の 突起2e, 2f, 2gが形成されている。突起2e, 2fが、最も肉薄で細長い断面形状を している。突起2gが最も外側まで突出している。突起2eと2fとの間に、幅方向断 面形状が長方形の円環状溝2iが形成されている。 1 is a cross-sectional view in the width direction of a water blocking material 1 according to an embodiment of the present invention, and FIG. 2 is a front view of the water blocking material 1 (viewed from the right side in FIG. 1). The water stop material 1 has an annular shape as a whole. The annular body 2 of the water blocking material 1 has a complicated shape. Specifically, the annular small projections 2a, 2b, 2c, 2d are also formed on the inner peripheral surface of the annular body 2. On the outer peripheral surface of the annular body 2, annular protrusions 2e, 2f, 2g are formed. The protrusions 2e and 2f have the thinnest and elongated cross-sectional shape. The protrusion 2g projects to the outermost side. An annular groove 2i having a rectangular cross-section in the width direction is formed between the protrusions 2e and 2f.

【0008】 円環状本体2は加硫ゴムからなる。この加硫ゴムは、不等沈下による圧縮応力 に耐える靭性を有していなければならない。また、日光の当らない土中で使用さ れるので、特定はしないが、力の強い天然ゴムが好ましく、これに耐バクテリア 性を付与したものが好ましい。The annular body 2 is made of vulcanized rubber. This vulcanized rubber must be tough enough to withstand the compressive stress of uneven settlement. Further, since it is used in soil that is not exposed to sunlight, natural rubber having high strength is preferable, but it is preferable to use natural rubber having bacteria resistance.

【0009】 円環状本体2の内周面の溝2hに、水膨脹ゴムからなる円環状水膨脹材3Aを固 定する。外周面の溝2iに、水膨脹ゴムからなる円環状水膨脹材3Bを固定する。水 膨脹材3A、3Bの幅方向断面形状は略長方形であり、水膨脹材3Bの方が3A の方よりも肉厚である。この水膨脹ゴムは、加硫ゴム中に吸水膨脹性樹脂の粉体 等を配合したものである。この水膨脹ゴムの種類は問わないが、吸水体積膨脹倍 率が50〜250 %の加硫ゴムが好ましい。An annular water expansion material 3A made of water expansion rubber is fixed in the groove 2h on the inner peripheral surface of the annular body 2. An annular water expansion material 3B made of water expansion rubber is fixed to the groove 2i on the outer peripheral surface. The cross-sectional shape of the water expansion materials 3A and 3B in the width direction is substantially rectangular, and the water expansion material 3B is thicker than the water expansion material 3A. This water-expandable rubber is a mixture of a vulcanized rubber and powder of a water-swellable resin. The type of the water-expanded rubber is not limited, but a vulcanized rubber having a water absorption volume expansion factor of 50 to 250% is preferable.

【0010】 図3は、止水材1を施工した状態を示す要部断面図である。マンホール壁体4 に略円形の貫通孔6が形成されている。下水道管渠5の外周面に止水材1を嵌め 込み、次いで下水道管渠5を貫通孔6に挿入する。突起2e, 2f, 2a, 2bを含めば 、円環状本体2の厚さは、下水道管渠5とマンホール壁体4との隙間よりも少し 厚い。そして、下水道管渠5を貫通孔6に挿入すると、突起2e, 2fが平たく変形 する。これにより、加硫ゴム製の本体2がその厚さ方向に圧縮される。加硫ゴム の圧縮復元力により、円環状本体2が、下水道管渠5とマンホール壁体4に押し 付けられ、この面圧によって通水が防止される。FIG. 3 is a cross-sectional view of essential parts showing a state in which the water blocking material 1 has been applied. A substantially circular through hole 6 is formed in the manhole wall body 4. The water blocking material 1 is fitted on the outer peripheral surface of the sewer pipe 5, and then the sewer pipe 5 is inserted into the through hole 6. Including the projections 2e, 2f, 2a, 2b, the thickness of the annular body 2 is slightly thicker than the gap between the sewer pipe 5 and the manhole wall 4. Then, when the sewer pipe 5 is inserted into the through hole 6, the projections 2e and 2f are deformed flat. Thereby, the main body 2 made of vulcanized rubber is compressed in its thickness direction. Due to the compression restoring force of the vulcanized rubber, the annular body 2 is pressed against the sewer pipe 5 and the manhole wall 4, and the surface pressure prevents water flow.

【0011】 本実施例によれば、止水材1を下水道管渠5の外周面に設置し、下水道管渠5 を貫通孔6へ挿入すれば施工できる。従って、下水道工事が従来よりも遥かに容 易であり、かつ高度の熟練工を必要としない。しかも、モルタル等の充填材を用 いないので、下水道工事現場をすぐに埋め戻すことができる。According to this embodiment, the waterproofing material 1 can be installed by installing it on the outer peripheral surface of the sewer pipe 5 and inserting the sewer pipe 5 into the through hole 6. Therefore, sewer construction is much easier than before and does not require highly skilled workers. Moreover, since no filler such as mortar is used, the sewer construction site can be immediately backfilled.

【0012】 また、円環状本体2が、弾性体である加硫ゴムの成形品であり、不等沈下等に よる下水道管ジョイント部の応力集中を緩和する働きを有するので、下水道管渠 の破損を防止できる。 また、円環状本体2の断面形状を略長方形とし、かつ本体2の厚さを、下水道 管渠5とマンホール壁体4との隙間よりも大きくすると、下水道管渠5を貫通孔 6に挿入するときに、円環状本体2が壁体4に引っかかるので、施工が難しい。 この点、突起2e, 2f, 2a, 2b, 2cを設け、下水道管渠5の挿入時にこれらの突起 が圧縮変形するようにしたので、この工事に多大の力や熟練が必要でなく、施工 が簡単である。これと共に、これらの各突起の圧縮復元力を利用して、止水を行 っている。Further, since the annular main body 2 is a molded product of vulcanized rubber which is an elastic body and has a function of relieving stress concentration in the sewer pipe joint portion due to uneven settlement, the sewer pipe is damaged. Can be prevented. If the cross-sectional shape of the annular main body 2 is made substantially rectangular and the thickness of the main body 2 is made larger than the gap between the sewer pipe 5 and the manhole wall 4, the sewer pipe 5 is inserted into the through hole 6. At this time, the annular body 2 is caught by the wall body 4, which makes the construction difficult. In this respect, since the projections 2e, 2f, 2a, 2b, 2c are provided so that these projections are compressed and deformed when the sewer pipe 5 is inserted, a great deal of force and skill are not required for this construction, and the construction work is difficult. It's easy. Along with this, water is stopped by utilizing the compressive restoring force of each of these protrusions.

【0013】 こうした施工時の問題とは別に、施工後の止水性能について問題が生じうる。 即ち、埋め戻しの後、土圧などの偏圧がかかり、下水道管渠の方が沈下変位する ことがある。すると、図4に示すように、下水道管渠5の上側の隙間が拡がり、 突起2e, 2f等の圧縮変形による面圧が低下する。そして、水圧の方が大きくなる と、例えば矢印Aのように水が進入する。この場合は、水膨脹材3Bが吸水し、 膨脹してマンホール壁体4を強く押圧するに至る。この結果、水の進入が停止す る。円環状本体2と下水道管渠5との間に水が進入したときには、水膨脹材3A が吸水し、膨脹する。[0013] Apart from such a problem at the time of construction, a problem may occur with respect to the waterproof performance after the construction. In other words, after backfilling, unbalanced pressure such as earth pressure may be applied and the sewer pipe may be displaced by subsidence. Then, as shown in FIG. 4, the gap above the sewer pipe 5 expands, and the surface pressure due to the compressive deformation of the projections 2e, 2f and the like decreases. Then, when the water pressure becomes larger, water enters as shown by arrow A, for example. In this case, the water expansion material 3B absorbs water, expands, and strongly presses the manhole wall body 4. As a result, the ingress of water stops. When water enters between the annular body 2 and the sewer pipe 5, the water expansion material 3A absorbs water and expands.

【0014】 本実施例の止水材について、止水効果を確認した。 下水道管内では自然流下が原則であり、通常 0.1%〜10%の勾配がついている 。マンホールは垂直に取り付けられる。従って、マンホールの壁面と下水道管渠 とは、最高6°程度の傾斜を生じる。この場合、不等沈下などの偏圧がかからな くとも、傾斜による偏圧が止水材1にかかる。 そこで、実際に、図4に示すように止水材1を取り付け、下水道管渠5を7° で傾斜させて水圧試験を行った。管渠5を傾斜させた直後には漏水が発生したが 、3日後には漏水が停止した。これは、水膨脹材の吸水膨脹によって、二次止水 効果が発揮されたものである。The water blocking effect of the water blocking material of this example was confirmed. In the sewerage pipes, in principle, there is a natural flow, and there is usually a gradient of 0.1% to 10%. The manhole is mounted vertically. Therefore, the wall of the manhole and the sewer pipe have a maximum inclination of about 6 °. In this case, even if the unbalanced settlement or the like is not applied, the water blocking material 1 is biased by the inclination. Then, actually, as shown in FIG. 4, the water blocking material 1 was attached, and the sewer pipe 5 was tilted at 7 ° to perform a water pressure test. Leakage occurred immediately after the pipe 5 was tilted, but stopped after 3 days. This is because the secondary water blocking effect was exhibited by the water expansion of the water expansion material.

【0015】[0015]

【考案の効果】[Effect of the device]

以上説明したように、本考案によれば、下水道工事が従来よりも遥かに容易に なり、かつ下水道工事現場をすぐに埋め戻すことができる。また、加硫ゴム製の 円環状本体を用いているので、応力集中が緩和され、下水道管渠の破損を防止で きる。しかも、円環状本体の内周面と外周面とに突起を設けていることにより、 工事の際に多大の労力を要することなく、施工できる。しかも、下水道管渠とマ ンホール壁体とが不等沈下しても、水膨脹材が吸水して膨脹し、二次止水効果を 発揮する。従って、施工後も極めて長期に亘って止水性能を維持できる。 As described above, according to the present invention, sewer construction is much easier than before, and the sewer construction site can be immediately backfilled. In addition, since the annular body made of vulcanized rubber is used, stress concentration is relieved and damage to the sewer pipe can be prevented. Moreover, by providing the projections on the inner peripheral surface and the outer peripheral surface of the annular main body, it is possible to perform the construction without requiring a great deal of labor during the construction. In addition, even if the sewer pipe and the manhole wall are subsided unevenly, the water expansion material absorbs water and expands, thereby exerting a secondary water blocking effect. Therefore, the waterproof performance can be maintained for a very long time even after the construction.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の実施例に係る止水材1をその幅方向に
切ってみた断面図である。
FIG. 1 is a cross-sectional view of a water blocking material 1 according to an embodiment of the present invention, taken in the width direction thereof.

【図2】止水材1の正面図である(図1において右方向
から見たもの)。
FIG. 2 is a front view of the water blocking member 1 (viewed from the right in FIG. 1).

【図3】止水材1を下水道管渠5とマンホール壁体4と
の間に施工した状態を示す要部断面図である。
FIG. 3 is a cross-sectional view of essential parts showing a state in which the water blocking material 1 is installed between the sewer pipe 5 and the manhole wall body 4.

【図4】止水材1を施工した後、下水道管渠5とマンホ
ール壁体4とが不等沈下したときの断面図である。
FIG. 4 is a cross-sectional view when the sewer pipe 5 and the manhole wall body 4 are unevenly submerged after the water blocking material 1 is applied.

【符号の説明】[Explanation of symbols]

1 止水材 2 円環状本体 2a, 2b, 2c, 2d, 2e, 2f, 2g 円環状突起 2h, 2i 円環状溝 3A, 3B 円環状水膨脹材 4 マンホール壁体 5 下水道管渠 6 壁面貫通孔 1 Water stop material 2 Annular body 2a, 2b, 2c, 2d, 2e, 2f, 2g Annular protrusion 2h, 2i Annular groove 3A, 3B Annular water expansion material 4 Manhole wall 5 Sewer pipe 6 Wall through hole

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 下水道管渠の外周面とコンクリート製マ
ンホールの壁面貫通孔との間に設置すべき止水材であっ
て、内周面と外周面とにそれぞれ円環状の突起と溝とを
備えた加硫ゴム製の円環状本体、この円環状本体の内周
面の前記溝に固定された水膨脹ゴム製の円環状水膨脹材
及び前記円環状本体の外周面の前記溝に固定された水膨
脹ゴム製の円環状水膨脹材を有する止水材。
1. A water blocking material to be installed between an outer peripheral surface of a sewer pipe and a wall surface through hole of a concrete manhole, wherein an inner peripheral surface and an outer peripheral surface have annular projections and grooves, respectively. An annular body made of vulcanized rubber provided, an annular water expansion member made of water expansion rubber fixed to the groove on the inner peripheral surface of the annular body, and fixed to the groove on the outer peripheral surface of the annular body. Water-stopping material having an annular water-expanding material made of water-expanding rubber.
JP37092U 1992-01-09 1992-01-09 Water stop material Pending JPH0557035U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP37092U JPH0557035U (en) 1992-01-09 1992-01-09 Water stop material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP37092U JPH0557035U (en) 1992-01-09 1992-01-09 Water stop material

Publications (1)

Publication Number Publication Date
JPH0557035U true JPH0557035U (en) 1993-07-30

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Application Number Title Priority Date Filing Date
JP37092U Pending JPH0557035U (en) 1992-01-09 1992-01-09 Water stop material

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012037036A (en) * 2010-08-12 2012-02-23 Furukawa Electric Co Ltd:The Wall penetrating structure of piping
KR102390977B1 (en) * 2021-12-13 2022-04-25 한상규 Structure of water stop in concreting method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510536B2 (en) * 1984-10-31 1993-02-10 Kayaba Industry Co Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510536B2 (en) * 1984-10-31 1993-02-10 Kayaba Industry Co Ltd

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012037036A (en) * 2010-08-12 2012-02-23 Furukawa Electric Co Ltd:The Wall penetrating structure of piping
KR102390977B1 (en) * 2021-12-13 2022-04-25 한상규 Structure of water stop in concreting method

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