JP6360675B2 - Piping structure of drainage system and construction method of this piping structure - Google Patents

Piping structure of drainage system and construction method of this piping structure Download PDF

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JP6360675B2
JP6360675B2 JP2013241807A JP2013241807A JP6360675B2 JP 6360675 B2 JP6360675 B2 JP 6360675B2 JP 2013241807 A JP2013241807 A JP 2013241807A JP 2013241807 A JP2013241807 A JP 2013241807A JP 6360675 B2 JP6360675 B2 JP 6360675B2
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resin
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floor
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英治 木村
英治 木村
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Sekisui Chemical Co Ltd
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Description

本発明は、マンションなどの集合住宅やホテルやビジネスビルなどの高層ビル等の多層階からなる建物の排水システムの配管構造およびこの配管構造の施工方法に関する。   The present invention relates to a piping structure of a drainage system of a multi-story building such as an apartment house such as a condominium or a high-rise building such as a hotel or a business building, and a construction method of the piping structure.

排水システムには単管式排水システム、2管式排水システムなどがあるが、マンションなどの集合住宅やホテルやビジネスビルなどの高層ビル等の多層階からなる建物には、2管式に比べ、パイプスペースをコンパクトにできるメリットや施工上のメリットにより、単管式排水システムが主に用いられる。
すなわち、上記単管式排水システムは、立管路を構成する管継手に設けた旋回羽根で排水を旋回させ、空気と水を分離することで、管内の圧力変動を抑制し、排水性能を高めて、従来古くからある2管式排水システムとは異なり、通気立て管を設けず1本の排水立管路が排水路と通気管とを兼ねるようになっている。
Drainage systems include single-pipe drainage systems and two-pipe drainage systems, but buildings with multiple floors, such as apartment buildings such as apartment buildings and high-rise buildings such as hotels and business buildings, A single-pipe drainage system is mainly used because of the advantage of making the pipe space compact and the advantage of construction.
That is, the single-pipe drainage system suppresses pressure fluctuations in the pipes and improves drainage performance by swirling the drainage with the swirl vanes provided in the pipe joints constituting the vertical pipe and separating the air and water. Unlike the conventional two-pipe drainage system, a single drainage duct serves as both a drainage duct and a ventilation pipe without providing a ventilation standpipe.

また、上記単管式排水システムの場合、集合継手(例えば、積水化学工業製 ADスリム継手)が排水立管路の一部を構成するように建物の各階の床を貫通してそれぞれ施工され、床スラブ上の配管スペースで洗面、洗濯、浴槽、台所、便器といった器具と接続されている。
そして、上記集合継手は、排水立管の残部を構成する接続配管によって上下階の集合継手と連結されている。
Further, in the case of the single pipe drainage system, a collective joint (for example, AD slim joint manufactured by Sekisui Chemical Co., Ltd.) is constructed by penetrating the floor of each floor of the building so as to constitute a part of the drainage pipe, The piping space on the floor slab is connected to appliances such as wash basin, laundry, bathtub, kitchen and toilet.
And the said joint joint is connected with the joint joint of the upper and lower floors by the connection piping which comprises the remainder of a drainage standpipe.

なお、マンション等の建築物の各階の床は防火区画となるため、排水立管路の少なくとも床を貫通する部分は、火災発生階からの延焼防止のため、耐火性が要求される。そのため、防火区画を貫通する部分に用いられる集合継手や管には、鋳鉄等の金属製のものが使用されてきた。
また、昨今(特に、最近5年程度の間)においては、施工性向上の観点で、膨張性黒鉛を管厚み方向の層中に含み、火災時の熱によって膨張性黒鉛が膨張する耐火樹脂管(例えば、積水化学工業株式会社製耐火VPパイプ)と、鋳鉄製の集合継手とを、縮径金具を介してフランジ接続(メカニカル接続)する構造(特許文献1)、火災時に膨張する樹脂を内蔵した金属製のアダプターが付属した押し輪で、鋳鉄製の集合継手と樹脂管をメカニカル接続する構造(特許文献2)、集合継手の差し口を、膨張部材を内在した金属製のカバーを設けた受け口パイプに挿入する構造(特許文献3)等のように、火災時に立て管内を閉塞させる技術が提案されている。
In addition, since the floor of each floor of a building such as a condominium is a fire-proof section, fire resistance is required in order to prevent the spread of fire from the floor where the fire occurred at least in the portion of the drainage pipe that penetrates the floor. For this reason, metal joints such as cast iron have been used for collective joints and pipes used in portions that penetrate the fire prevention compartment.
In recent years (especially for the last 5 years or so), in view of improving workability, a refractory resin pipe that contains expansive graphite in the layer in the tube thickness direction and expands the expansive graphite by heat during a fire. (For example, Sekisui Chemical Co., Ltd. fireproof VP pipe) and cast iron collective joint flange connection (mechanical connection) via a reduced diameter fitting (Patent Document 1), built-in resin that expands in the event of a fire A structure that mechanically connects a cast-iron collective joint and a resin tube with a push ring with a metal adapter attached (Patent Document 2), and provided with a metal cover with an expansion member at the inlet of the collective joint A technique for closing the inside of a vertical pipe in the event of a fire has been proposed, such as a structure (Patent Document 3) inserted into a receiving pipe.

また、施工法としては、集合継手をスラブに設置した後、立て管を集合継手の上部に差し、さらに上階の集合継手と接続する方法により行われている。
しかし、上記特許文献1,2の構造の場合、集合継手の下部と管を高所にてフランジ接続する必要があった。また、特許文献3の構造の場合、集合継手の下部と管の接続はゴム輪接続で容易であるが、高所にて金属製の筒をスラブ下面にアンカーボルトで固定する必要があった。
Moreover, as a construction method, after installing a collective joint in a slab, the standing pipe is inserted into the upper part of the collective joint and further connected to the collective joint on the upper floor.
However, in the case of the structures of Patent Documents 1 and 2, it is necessary to flange-connect the lower part of the collective joint and the pipe at a high place. In the case of the structure of Patent Document 3, it is easy to connect the lower part of the collective joint and the pipe by rubber ring connection, but it is necessary to fix a metal cylinder to the lower surface of the slab with an anchor bolt at a high place.

すなわち、特許文献1〜3の構造の場合、作業性が悪く、特に狭いパイプスペース内での施工性が劣るという問題があった。
また、最近では長期優良化対応として、径年後の配管の更生を想定した配管構造が要求されることがある。各階で配管を切断することなく、管を取り外す必要があり、各社から製品が出されている(特許文献4,5参照)。
That is, in the structure of patent documents 1-3, workability | operativity was bad and there existed a problem that the workability in a narrow pipe space was especially inferior.
Moreover, recently, as a countermeasure for long-term excellence, a piping structure that assumes rehabilitation of piping after a certain age may be required. It is necessary to remove the pipes without cutting the pipes on each floor, and products are available from various companies (see Patent Documents 4 and 5).

特開2009-257572号公報JP 2009-257572 A 特開2008-121413号公報JP 2008-121413 JP 特開2012-149444号公報JP 2012-149444 A 特開2011-94405号公報JP 2011-94405 A 特開2009-270345号公報JP 2009-270345

しかし、上記特許文献4,5に記載の製品は、集合継手の接続部のボルトを取り外しての作業が必要であり、高所作業が必要であった。また、金属管との接続が必要なため、重量が重く、施工性に劣るという問題があった。   However, the products described in Patent Documents 4 and 5 require the work of removing the bolts at the connecting portion of the collective joint, and the work at a high place. Moreover, since connection with a metal pipe is required, there existed a problem that weight was heavy and it was inferior to workability.

本発明は、上記事情に鑑みて、高所でのフランジ接続作業が不要で、狭いパイプスペースにおいても容易に排水立管路を施工できるとともに、配管材の更新作業が容易である上、火災発生時において、他の階への延焼を防止することができる排水システムの配管構造およびこの配管構造の施工方法を提供することを目的としている。   In view of the above circumstances, the present invention does not require a flange connection work at a high place, can easily construct a drainage conduit even in a narrow pipe space, and can easily renew the piping material, and also generate a fire. It is an object of the present invention to provide a piping structure of a drainage system that can prevent the spread of fire to other floors and a construction method of this piping structure.

上記目的を達成するために、本発明にかかる排水システムの第1の配管構造(以下、「本発明1の配管構造」と記す)は、各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続されている排水システムの配管構造において、前記接続立管部が、樹脂短管と、合成樹脂製のやりとり継手とを備え、前記樹脂短管が、前記金属製管継手の下端に接続されていて、前記やりとり継手が、やりとり可能なリング状弾性シール材内装受口と、このリング状弾性シール材内装受口に連設された直管部を有し、この直管部が、下の階の金属製管継手の上部受口に嵌合接続されるとともに、前記リング状弾性シール材内装受口が、前記直管部と前記上部受口との嵌合が解除されるまで前記やりとり継手を押し上げ可能に前記樹脂短管に嵌合していて、かつ、前記樹脂短管が、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管であることを特徴としている。
In order to achieve the above object, the first piping structure of the drainage system according to the present invention (hereinafter referred to as “the piping structure of the present invention 1”) is made of a metal pipe so as to vertically penetrate the floor slab of each floor. In a piping structure of a drainage system in which a joint is provided and upper and lower metal pipe joints are connected via a connection stand pipe part, the connection stand pipe part includes a resin short pipe and a synthetic resin exchange joint. The resin short pipe is connected to the lower end of the metal pipe joint, and the exchange joint is connected to the exchangeable ring-shaped elastic seal material interior receiving port and the ring-shaped elastic seal material interior reception port. The straight pipe portion is fitted and connected to the upper receiving port of the metal pipe joint on the lower floor, and the ring-shaped elastic seal material interior receiving port is connected to the straight pipe. Until the fitting between the upper part and the upper receptacle is released. The push can be said have fitted in resin short pipe, and the resin short pipe comprises a thermal expanding agent in the resin layer in the thickness direction, refractory resin pipe which closes due to thermal expansion of the thermal expansion agent It is characterized by being.

本発明1の配管構造において、金属製管継手と、樹脂短管とは、押し輪によってメカニカル接続されている構成とすることが好ましい。
すなわち、かかる構成とすることによって、メカニカル接続を解除することで樹脂短管を容易に交換可能となる。
本発明において、熱膨張剤としては、特に限定されないが、熱膨張性黒鉛やガラス質の熱膨張性粒子等が挙げられ、熱膨張性黒鉛が好適である。
In the piping structure of the first aspect of the present invention, it is preferable that the metal pipe joint and the resin short pipe are mechanically connected by a push ring.
That is, with this configuration, the resin short tube can be easily replaced by releasing the mechanical connection.
In the present invention, the thermal expansion agent is not particularly limited, and examples thereof include thermal expansion graphite and glassy thermal expansion particles, and thermal expansion graphite is preferable.

また、本発明にかかる排水システムの第2の配管構造(以下、「本発明2の配管構造」と記す)は、各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続されている排水システムの配管構造において、前記接続立管部が、樹脂短管と、合成樹脂製のやりとり継手とを備え、前記樹脂短管が、前記金属製管継手の下端に接続されていて、前記やりとり継手が、やりとり可能なリング状弾性シール材内装受口と、このリング状弾性シール材内装受口に連設された直管部を有し、この直管部が、下の階の金属製管継手の上部受口に嵌合接続されるとともに、前記リング状弾性シール材内装受口が、前記直管部と前記上部受口との嵌合が解除されるまで前記やりとり継手を押し上げ可能に前記樹脂短管に嵌合していて、かつ、前記樹脂短管の金属製管継手の下端から突出した部分の上端部が、金属製筒状体によって囲繞されていて、金属製筒状体と前記樹脂短管との環状のすき間に耐火熱膨張性材料が充填されていることを特徴としている。 Further, the second piping structure of the drainage system according to the present invention (hereinafter referred to as “the piping structure of the present invention 2”) is provided with a metal pipe joint so as to vertically penetrate the floor slab of each floor. In the piping structure of the drainage system in which the metal pipe joints are connected via a connection stand pipe part, the connection stand pipe part includes a resin short pipe and a synthetic resin exchange joint, and the resin short pipe Is connected to the lower end of the metal pipe joint, and the exchange joint is an exchangeable ring-shaped elastic seal material interior receiving port, and a straight pipe portion connected to the ring-shaped elastic seal material interior reception port. The straight pipe portion is fitted and connected to the upper receptacle of the metal pipe joint on the lower floor, and the ring-shaped elastic seal material interior receptacle is connected to the straight pipe portion and the upper receptacle. The exchange joint can be pushed up until the mating is released. Optionally fitted to the resin short pipe, and the upper end of the portion protruding from the lower end of the metal pipe coupling of the resin short tube, it has been surrounded by a metal cylindrical member, a metallic cylindrical member It is characterized in that a fire-resistant and heat-expandable material is filled in an annular gap with the resin short tube.

お、本発明においてやりとり継手とは、樹脂短管の下端部がリング状弾性シール材による水密状態を保持しながら上下方向にスライド可能な受口形状をしたものを意味し、例えば、積水化学工業株式会社の商品名ベルパイプと同じ形状の受口部分を備えたものが挙げられる。 Contact name and interact joint in the present invention, the lower end portion of the resin short tube means that the slidable socket shape in the vertical direction while maintaining the water-tight state by ring-shaped elastic sealing member, for example, Sekisui Chemical The thing provided with the receptacle part of the same shape as the brand name bell pipe of Kogyo Co., Ltd. is mentioned.

また、本発明の第1および第2の配管構造において、リング状弾性シール材内装受口を備えた樹脂製管継手は、直管部が通常のVP管で形成されていてもよいし、積水化学工業株式会社製の耐火VP管のように、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管で形成されていてもよい。
すなわち、かかる構成とすることによって、火災による熱によって接続立管部の上下方向のいずれの場所においても熱膨張剤が熱膨張して閉塞状態とすることが可能になり、火災発生階から他の階への延焼防止効果を高めることができる。
In the first and second piping structures of the present invention, the resin pipe joint provided with the ring-shaped elastic seal material interior receiving port may have a straight pipe portion formed of a normal VP pipe, Like a fireproof VP pipe manufactured by Kagaku Kogyo Co., Ltd., a thermal expansion agent may be included in a resin layer in the thickness direction and may be formed of a fireproof resin pipe that is closed by thermal expansion of the thermal expansion agent.
That is, by adopting such a configuration, it becomes possible for the thermal expansion agent to thermally expand at any location in the vertical direction of the connecting stand pipe portion due to heat from the fire, and to be in a closed state, from the floor where the fire occurred. The effect of preventing the spread of fire to the floor can be enhanced.

さらに、本発明の配管構造において、金属製管継手としては、特に限定されないが、鋳鉄製のものが好適であり、例えば、積水化学工業株式会社製の商品名ADスリム等の集合継手が一般に用いられる。
また、リング状弾性シール材とは、受口に嵌合された管の周囲に水密嵌合して接続状態を保つことができるものであれば、その材質や形状は特に限定されないが、例えば、EPDMなどの合成ゴムや、熱可塑性樹脂エラストマー等で形成されたものが好適である。
Furthermore, in the piping structure of the present invention, the metal pipe joint is not particularly limited, but is preferably made of cast iron. For example, collective joints such as trade name AD Slim manufactured by Sekisui Chemical Co., Ltd. are generally used. It is done.
The ring-shaped elastic sealing material is not particularly limited in its material and shape as long as it can be watertight fitted around the pipe fitted in the receiving port to maintain the connection state. Those formed of a synthetic rubber such as EPDM or a thermoplastic resin elastomer are suitable.

また、上記本発明の配管構造の施工方法は、金属製管継手の下端に予め樹脂短管を接続した継手ユニットを、前記樹脂短管側を先頭にして床スラブ上から床スラブに設けられた貫通孔に挿入し、床スラブ下方で下の階の金属製管継手に接続されたリング状弾性シール材内装受口を備えた樹脂製管継手の受口に樹脂短管の下端部を水密嵌合させる工程を上層階に向かって繰り返すことを特徴としている。   In the construction method of the piping structure of the present invention, a joint unit in which a resin short pipe is connected in advance to the lower end of a metal pipe joint is provided on the floor slab from above the floor of the resin short pipe. Insert the bottom end of the short resin pipe into a water-tight fit into the receptacle of the resin pipe fitting with the ring-shaped elastic seal material interior receptacle that is inserted into the through hole and connected to the metal pipe fitting on the lower floor below the floor slab It is characterized by repeating the process of combining toward the upper floor.

本発明において、上記耐火性樹脂管としては、特に限定されないが、特許49606806号公報や特許4440290号公報等に記載の層構成のものが挙げられ、市販のものとしては、積水化学工業株式会社の商品耐火VPパイプが挙げられる。
また、金属製筒状体と前記樹脂短管との環状のすき間に充填される耐火熱膨張性材料としては、火災時の熱によって熱膨張して、他の階への延焼が防止できるように樹脂短管を閉塞させることができれば、特に限定されないが、例えば、積水化学工業株式会社の商品名耐火VPパイプを短尺にカットしたもの、積水化学工業株式会社の商品名フィブロック、ニチアス株式会社製の商品名パーモフレックス等の市販の材料を用いることができる。
In the present invention, the refractory resin pipe is not particularly limited, and examples thereof include those having a layer structure described in Japanese Patent No. 4960806 and Japanese Patent No. 4440290, and commercially available products include those manufactured by Sekisui Chemical Co., Ltd. Commodity refractory VP pipe.
In addition, as a fire-resistant and heat-expandable material filled in the annular gap between the metal cylinder and the resin short tube, it can be thermally expanded by heat at the time of fire so that it can be prevented from spreading to other floors. Although it will not specifically limit if the resin short pipe can be closed, for example, the product name fire-resistant VP pipe of Sekisui Chemical Co., Ltd. cut short, the trade name Fiblo of Sekisui Chemical Co., Ltd., manufactured by Nichias Co., Ltd. A commercially available material such as Permoflex can be used.

本発明の配管構造は、接続立管部が、金属製管継手の下端に接続された樹脂短管と、リング状弾性シール材内装受口を備えた樹脂製管継手とを含む複数の樹脂配管材が上下方向に接続されて形成されるとともに、前記樹脂短管が、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管であるので、以下のような優れた効果を備えている。
(1)接続立管部がすべて樹脂配管材によって形成されているので、金属製の配管材を用いる場合に比べ、軽量で狭いパイプスペースでの接続立管部の施工性に優れている。
(2)接続立管部が、前記金属製管継手の下端に接続された樹脂短管と、この樹脂短管に接続されるリング状弾性シール材内装受口を備えた樹脂製管継手とを少なくとも含む複数の樹脂配管材が上下方向に接続されて形成されているので、以下のようにして、樹脂短管と下の階の金属製管継手の上端に接続された立管部材の上端部との接続を、高所作業しなくても行える。
すなわち、下の階の床スラブを貫通するように金属製管継手を床スラブに固定した状態で、樹脂短管と金属製管継手の上端とを接続するリング状弾性シール材内装受口を備えた樹脂製管継手を
上の階の床スラブの金属製管継手を貫通させる貫通孔を受口が下方から臨むように金属製管継手に接続する。つぎに、上の階の金属製管継手の下端に予め樹脂短管を接続してユニット化しておくとともに、得られた継手ユニットを、上の階の床スラブ側から樹脂短管側を先頭にして床スラブに設けられた貫通孔に挿入し、樹脂短管の下端を受口に嵌合させてリング状弾性シール材によって水密に接続する。その後、貫通孔周りにモルタルを充填し、金属製管継手を床スラブに固定する。そして、この作業を繰り返し、上層階に向かって排水立管路を形成していく。したがって、作業者がすべて床スラブ上にのって作業を行うことができ、高所作業が不要になり、施工時の安全性を確保できるとともに、狭いパイプスペースでの施工性も向上する。
(3)樹脂製管継手がリング状弾性シール材内装受口を備えているので、フランジ接続のように高所でボルトを取り外したりする手間がなく、各階毎に容易に樹脂製管継手を樹脂短管から取り外せ、将来の更新時においても、パイプを切断する作業を行うことなく、接続立管部を分解して簡単に取り外すことができる。
(4)樹脂短管が、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管であるので、火災発生時にこの樹脂短管が熱膨張剤の膨張によって閉塞し、他の階の人が避難完了するまでの所定時間以上(例えば、1時間以上)火災発生階から他の階への延焼を防止することができる。
The piping structure of the present invention includes a plurality of resin pipes in which the connecting stand pipe portion includes a resin short pipe connected to the lower end of the metal pipe joint and a resin pipe joint provided with a ring-shaped elastic seal material interior receiving port. Since the material is formed by being connected in the vertical direction, the resin short tube is a refractory resin tube that contains a thermal expansion agent in the resin layer in the thickness direction and is closed by thermal expansion of the thermal expansion agent, It has the following excellent effects.
(1) Since all the connecting pipe parts are made of resin piping material, the workability of the connecting pipe part in a light and narrow pipe space is excellent as compared with the case where a metal piping material is used.
(2) A resin short pipe connected to the lower end of the metal pipe joint and a resin pipe joint provided with a ring-shaped elastic seal material interior receiving port connected to the resin short pipe. Since at least a plurality of resin piping materials including at least one are connected in the vertical direction, the upper end portion of the standing pipe member connected to the upper ends of the short metal pipe and the lower level metal pipe joint as follows Can be connected without working at high places.
That is, it has a ring-shaped elastic seal material interior receiving port that connects the short resin pipe and the upper end of the metal pipe joint with the metal pipe joint fixed to the floor slab so as to penetrate the floor slab of the lower floor The resin pipe joint is connected to the metal pipe joint so that the through hole through which the metal pipe joint of the floor slab on the upper floor penetrates faces from below. Next, a resin short pipe is connected in advance to the lower end of the metal pipe joint on the upper floor to make a unit, and the obtained joint unit is placed on the resin short pipe side from the floor slab side on the upper floor. Then, it is inserted into a through-hole provided in the floor slab, and the lower end of the short resin pipe is fitted into the receiving port and connected in a watertight manner by a ring-shaped elastic seal material. Thereafter, mortar is filled around the through hole, and the metal pipe joint is fixed to the floor slab. Then, this operation is repeated to form a drainage conduit toward the upper floor. Accordingly, all workers can work on the floor slab, work at high places is unnecessary, safety during construction can be secured, and workability in a narrow pipe space is also improved.
(3) Since the resin pipe fitting has a ring-shaped elastic seal material interior receptacle, there is no need to remove the bolt at a high place like a flange connection, and the resin pipe fitting can be easily resinated for each floor. The pipe can be removed from the short pipe, and the connecting stand pipe part can be easily disassembled and removed without performing the work of cutting the pipe even in future renewal.
(4) Since the resin short tube includes a thermal expansion agent in the resin layer in the thickness direction and is closed by the thermal expansion of the thermal expansion agent, the resin short tube is a thermal expansion agent when a fire occurs. It is possible to prevent the fire from spreading to another floor from a fire occurrence floor for a predetermined time or more (for example, 1 hour or more) until the person on the other floor completes evacuation.

また、本発明の配管構造は、各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続されている排水システムの配管構造において、前記接続立管部が、前記金属製管継手の下端に接続された樹脂短管と、この樹脂短管に接続されるリング状弾性シール材内装受口を備えた樹脂製管継手とを少なくとも含む複数の樹脂配管材が上下方向に接続されて形成されるとともに、前記樹脂短管の金属製管継手の下端から突出した部分の上端部が、金属製筒状体によって囲繞されていて、金属製筒状体と前記樹脂短管との間に熱膨張剤が混入させた樹脂材料が充填されているので、以下のような効果を備えている。
(1)接続立管部がすべて樹脂配管材を用いて形成されているので、金属製の配管材を用いる場合に比べ、軽量で狭いパイプスペースでの接続立管部の施工性に優れている。
(2)接続立管部が、前記金属製管継手の下端に接続された樹脂短管と、この樹脂短管に接続されるリング状弾性シール材内装受口を備えた樹脂製管継手とを少なくとも含む複数の樹脂配管材が上下方向に接続されて形成されているので、以下のようにして、樹脂短管と下の階の金属製管継手の上端に接続された立管部材の上端部との接続を、高所作業しなくても行える。
すなわち、下の階の床スラブを貫通するように金属製管継手を床スラブに固定した状態で、樹脂短管と金属製管継手の上端とを接続するリング状弾性シール材内装受口を備えた樹脂製管継手を上の階の床スラブの金属製管継手を貫通させる貫通孔を受口が下方から臨むように金属製管継手に接続する。つぎに、上の階の金属製管継手の下端に予め樹脂短管を接続してユニット化しておくとともに、得られた継手ユニットを、上の階の床スラブ側から樹脂短管側を先頭にして床スラブに設けられた貫通孔に挿入し、樹脂短管の下端を受口に嵌合させてリング状弾性シール材によって水密に接続する。その後、貫通孔周りにモルタルを充填し、金属製管継手を床スラブに固定する。そして、この作業を繰り返し、上層階に向かって排水立管路を形成していく。したがって、作業者がすべて床スラブ上にのって作業を行うことができ、高所作業が不要になり、施工時の安全性を確保できるとともに、狭いパイプスペースでの施工性も向上する。
(3)樹脂製管継手がリング状弾性シール材内装受口を備えているので、フランジ接続のように高所でボルトを取り外したりする手間がなく、各階毎に容易に樹脂製管継手を樹脂短管から取り外せ、将来の更新時においても、パイプを切断する作業を行うことなく、接続立管部を分解して簡単に取り外すことができる。
(4)樹脂短管の金属製管継手の下端から突出した部分の上端部が、金属製筒状体によって囲繞されていて、金属製筒状体と前記樹脂短管との間に熱膨張性樹脂材料が充填されているので、火災発生時に熱膨張性樹脂材料が膨張することによって樹脂短管が閉塞する。したがって、他の階の人が避難完了するまでの所定時間以上(例えば、1時間以上)火災発生階から他の階への延焼を防止することができる。
The pipe structure of the present invention is a drainage system pipe in which metal pipe joints are provided so as to vertically penetrate the floor slabs of each floor, and the upper and lower metal pipe joints are connected via a connecting stand pipe portion. In the structure, the connecting stand pipe part is a resin short pipe connected to the lower end of the metal pipe joint, and a resin pipe joint provided with a ring-shaped elastic seal material interior receiving port connected to the resin short pipe; A plurality of resin piping materials including at least a vertical pipe connected to each other, and an upper end portion of a portion projecting from the lower end of the metal pipe joint of the resin short pipe is surrounded by a metal cylindrical body. Since the resin material in which the thermal expansion agent is mixed is filled between the metal cylindrical body and the resin short tube, the following effects are provided.
(1) Since all the connecting pipe parts are formed using resin piping materials, the construction of the connecting pipe parts in a light and narrow pipe space is superior compared to the case of using metal piping materials. .
(2) A resin short pipe connected to the lower end of the metal pipe joint and a resin pipe joint provided with a ring-shaped elastic seal material interior receiving port connected to the resin short pipe. Since at least a plurality of resin piping materials including at least one are connected in the vertical direction, the upper end portion of the standing pipe member connected to the upper ends of the short metal pipe and the lower level metal pipe joint as follows Can be connected without working at high places.
That is, it has a ring-shaped elastic seal material interior receiving port that connects the short resin pipe and the upper end of the metal pipe joint with the metal pipe joint fixed to the floor slab so as to penetrate the floor slab of the lower floor The resin pipe joint is connected to the metal pipe joint so that the through hole through which the metal pipe joint of the floor slab on the upper floor penetrates faces from below. Next, a resin short pipe is connected in advance to the lower end of the metal pipe joint on the upper floor to make a unit, and the obtained joint unit is placed on the resin short pipe side from the floor slab side on the upper floor. Then, it is inserted into a through-hole provided in the floor slab, and the lower end of the short resin pipe is fitted into the receiving port and connected in a watertight manner by a ring-shaped elastic seal material. Thereafter, mortar is filled around the through hole, and the metal pipe joint is fixed to the floor slab. Then, this operation is repeated to form a drainage conduit toward the upper floor. Accordingly, all workers can work on the floor slab, work at high places is unnecessary, safety during construction can be secured, and workability in a narrow pipe space is also improved.
(3) Since the resin pipe fitting has a ring-shaped elastic seal material interior receptacle, there is no need to remove the bolt at a high place like a flange connection, and the resin pipe fitting can be easily resinated for each floor. The pipe can be removed from the short pipe, and the connecting stand pipe part can be easily disassembled and removed without performing the work of cutting the pipe even in future renewal.
(4) The upper end portion of the portion of the resin short pipe protruding from the lower end of the metal pipe joint is surrounded by the metal cylindrical body, and the thermal expansion between the metal cylindrical body and the resin short pipe is performed. Since the resin material is filled, the heat-expandable resin material expands when a fire occurs, thereby closing the resin short tube. Therefore, it is possible to prevent the spread of fire from the fire occurrence floor to another floor for a predetermined time or more (for example, 1 hour or more) until a person on another floor completes evacuation.

本発明の配管構造の第1の実施の形態をあらわす一部切欠断面正面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway cross-sectional front view showing a first embodiment of a piping structure of the present invention. 図1の配管構造の集合継手と樹脂短管との接続部をあらわす斜視図である。It is a perspective view showing the connection part of the collective joint of the piping structure of FIG. 1, and a resin short pipe. 図1の配管構造の施工方法を説明する図であって、リング状弾性シール材内装受口付片受直管の受口を樹脂短管に接続する前の状態をあらわしている。It is a figure explaining the construction method of the piping structure of FIG. 1, Comprising: The state before connecting the receptacle of a ring-shaped elastic sealing material interior receiving piece piece receiving pipe to a resin short pipe is shown. 図1の配管構造の更新方法を説明する図であって、リング状弾性シール材内装受口付片受直管を取り外す工程をあらわしている。It is a figure explaining the renewal method of the piping structure of FIG. 1, Comprising: The process of removing the ring-shaped elastic seal material interior receiving piece piece receiving pipe is shown. 図1の配管構造に用いる縮径金具付きフランジ金具の斜視図である。It is a perspective view of the flange metal fitting with a reduced diameter metal fitting used for the piping structure of FIG. 縮径金具の平面図である。It is a top view of a reduced diameter metal fitting. 縮径金具の拡径方法を説明する図である。It is a figure explaining the diameter expansion method of a reduced diameter metal fitting. 本発明の配管構造の第2の実施の形態をあらわす一部切欠断面正面図である。It is a partially notched cross-sectional front view showing 2nd Embodiment of the piping structure of this invention.

以下に、本発明を、その実施の形態をあらわす図面を参照しつつ詳しく説明する。
図1および図2は、本発明の配管構造の第1の実施の形態をあらわしている。
Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 and 2 show a first embodiment of the piping structure of the present invention.

図1および図2に示すように、この配管構造Aは、単管式排水システムの配管構造であって、各階の排水立管を構成する部分が、それぞれ金属製管継手としての集合継手(例えば、積水化学工業株式会社製ADスリム継手)1aと、熱膨張剤としての熱膨張性黒鉛を含む層を有し、火災の熱により熱膨張性黒鉛が膨張して管が閉塞状態となる耐火性樹脂短管(例えば、積水化学工業株式会社製耐火VPパイプ)2aと、1つのリング状弾性シール材内装受口付き合成樹脂管としてのやりとり可能なリング状弾性シール材内装受口付片受直管(例えば、積水化学工業株式会社の商品名ベルパイプと同じ形状の受口部分を備えたもの)3aとを接続した状態で形成されている。   As shown in FIGS. 1 and 2, this piping structure A is a piping structure of a single-pipe drainage system, and the portions constituting the drainage stand pipes on each floor are respectively collective joints (for example, metal pipe joints (for example, , Sekisui Chemical Co., Ltd. AD slim joint) 1a and a layer containing thermally expandable graphite as a thermal expansion agent. Resin short pipe (for example, refractory VP pipe manufactured by Sekisui Chemical Co., Ltd.) 2a and a single ring receiving ring-shaped elastic seal material interior receiving port as a synthetic resin tube with one ring-shaped elastic sealing material interior receiving port It is formed in a state in which a pipe (for example, one having a receiving portion having the same shape as the bell pipe of the trade name of Sekisui Chemical Co., Ltd.) is connected.

各階の集合継手1aは、その下端に工場等で予め耐火性樹脂短管2aが接続固定された継手ユニットの状態で、床スラブSを貫通するとともに、床スラブSにモルタルMで固定されている。
すなわち、耐火性樹脂短管2aは、ボルト17によって締め付けリング13を集合継手1aの下端フランジ部12に締め付けることによって、合成ゴム製の押し輪18が圧縮によって縮径することにより、耐火性樹脂短管2aの上端部が集合継手1aの下端に水密に固定された状態となっている。
The collective joint 1a on each floor penetrates the floor slab S and is fixed to the floor slab S with a mortar M in a joint unit in which a refractory resin short pipe 2a is connected and fixed to a lower end in advance at a factory or the like. .
That is, the fire-resistant resin short pipe 2a is formed by tightening the fastening ring 13 to the lower end flange portion 12 of the collective joint 1a with the bolt 17, and the synthetic rubber push ring 18 is reduced in diameter by compression. The upper end portion of the pipe 2a is fixed in a watertight manner to the lower end of the collective joint 1a.

また、締め付けリング13は、図2および図5に示すように、リング本体14と、このリング本体14に支持された落下防止手段15とを備えている。
すなわち、落下防止手段15は、ばね鋼製の線材を曲げ加工するとともに焼入れ加工することによって形成されていて、図5および図6に示すように、平面視Uの字状をした係止部15aと、係止部15aを挟んで両側に設けられた1対の円弧状をした押圧部15bと、両押圧部15bの端部から外側に延出する1対の拡径レバー部15cとを備え、係止部15aがリング本体14に設けられた係止孔14aを介してリング本体14の外側に突出するとともに、両拡径レバー部15cが他の係止孔14bを介して外側に突出した状態でリング本体14に支持されている。
Further, as shown in FIGS. 2 and 5, the tightening ring 13 includes a ring main body 14 and a fall prevention means 15 supported by the ring main body 14.
That is, the fall prevention means 15 is formed by bending and quenching a spring steel wire, and as shown in FIGS. 5 and 6, the locking portion 15a having a U-shape in plan view. And a pair of arc-shaped pressing portions 15b provided on both sides of the locking portion 15a, and a pair of diameter-enlarged lever portions 15c extending outward from the end portions of the both pressing portions 15b. The locking portion 15a protrudes to the outside of the ring body 14 through the locking hole 14a provided in the ring body 14, and both the enlarged lever portions 15c protrude to the outside through the other locking holes 14b. The ring body 14 is supported in a state.

そして、落下防止手段15は、図7に示すように、片手で2つの拡径レバー部15cを近接するように引き付けるか、図示してない工具を用いて2つの拡径レバー部15cを近接するように引き付けることによって2つの押圧部15bが離れて拡径状態になり、押圧部15b間に耐火性樹脂短管2aが挿通可能になる。一方、2つの拡径レバー部15cの引き付けを解除すると、バネ力によって押圧部15b間の距離が縮まり、押圧部15bが耐火性樹脂短管2aの周面に押圧されて、耐火性樹脂短管2aを落下しないように把持する。   Then, as shown in FIG. 7, the fall prevention means 15 attracts the two enlarged diameter lever portions 15c with one hand so as to approach each other, or brings the two enlarged diameter lever portions 15c into proximity using a tool not shown. By pulling in such a manner, the two pressing portions 15b are separated from each other to be in an expanded diameter state, and the fire-resistant resin short tube 2a can be inserted between the pressing portions 15b. On the other hand, when the attraction of the two enlarged diameter lever portions 15c is released, the distance between the pressing portions 15b is reduced by the spring force, and the pressing portions 15b are pressed against the peripheral surface of the refractory resin short tube 2a. Hold 2a so that it does not fall.

リング状弾性シール材内装受口付片受直管3aは、上側に配置される受口31と、直管部32とを備えている。
リング状弾性シール材内装受口付片受直管3aは、通常の排水管に用いられている塩化ビニル樹脂管(VPパイプ)でも構わないし、少なくとも立管構成部である直管部32が、耐火性樹脂短管2aと同様の層構成(例えば、積水化学工業株式会社製耐火VPパイプ)で形成されているものでも構わない。
受口31内には、図示していないが、リング状弾性シール材が内装されている。
The ring-shaped elastic seal member interior receiving piece-equipped piece receiving pipe 3 a includes a receiving opening 31 disposed on the upper side and a straight pipe portion 32.
The ring-shaped elastic sealing material interior receiving piece-receiving straight pipe 3a may be a vinyl chloride resin pipe (VP pipe) used for a normal drain pipe, or at least the straight pipe section 32 which is a standing pipe constituent part. It may be formed of the same layer structure as the fire resistant resin short pipe 2a (for example, a fire resistant VP pipe manufactured by Sekisui Chemical Co., Ltd.).
Although not shown in the figure, a ring-shaped elastic sealing material is housed inside the receiving port 31.

そして、リング状弾性シール材内装受口付片受直管3aは、受口31内に耐火性樹脂短管2aの下端が嵌合し、受口31内のリング状弾性シール材によって耐火性樹脂短管2aと水密に接続されている。
また、リング状弾性シール材内装受口付片受直管3aは、直管部32の下端が集合継手1aの上部受口11内に嵌合し、上部受口11内のリング状弾性シール材11aによって集合継手1aと水密に接続されている。
なお、図1中、16は横枝管接続口、4は横枝管である。
And the ring-shaped elastic seal material interior receiving piece-equipped receiving tube 3 a is fitted with the lower end of the short fire-resistant resin tube 2 a in the receiving port 31, and the ring-shaped elastic sealing material in the receiving port 31 serves as a refractory resin. The short pipe 2a is watertightly connected.
Moreover, the ring-shaped elastic seal material interior receiving piece receiving straight pipe 3 a has a lower end of the straight pipe portion 32 fitted into the upper receiving opening 11 of the collective joint 1 a, and the ring-shaped elastic sealing material in the upper receiving opening 11. 11a is connected to the collective joint 1a in a watertight manner.
In FIG. 1, 16 is a side branch pipe connection port, and 4 is a side branch pipe.

つぎに、この配管構造Aの施工方法を説明する。
(1)集合継手1aに予め工場等で押し輪18および締め付けリング13を用いて耐火性樹脂短管2aが接続して継手ユニットとしておく。
(2)下の階の床スラブS上にいる作業者が、下の階の床スラブSを貫通するように先に取り付けられた集合継手1aの上部受口11にリング状弾性シール材内装受口付片受直管3aの直管部32を嵌合させるとともに、図3に示すように、リング状弾性シール材内装受口付片受直管3aの受口31を上の階の床スラブSの貫通孔Hを臨むように配置する。
(3)上記継手ユニットを、図3に示すように、上の階の床スラブS上にいる作業者(前述の作業者と同じ作業者でもよい)が、樹脂短管2a側を先頭にして上の階の床スラブSの貫通孔11に通し、リング状弾性シール材内装受口付片受直管3aの受口31に嵌合させる。
(4)貫通孔11にモルタルMを充填し、集合継手1aを床スラブSに固定する。
(5)上記(2)〜(4)を繰り返して排水立管路を形成する。
Below, the construction method of this piping structure A is demonstrated.
(1) The refractory resin short pipe 2a is connected to the collective joint 1a in advance by using a push ring 18 and a tightening ring 13 at a factory or the like to prepare a joint unit.
(2) An operator who is on the floor slab S of the lower floor receives the ring-shaped elastic seal material interior reception at the upper receiving port 11 of the collective joint 1a that has been previously attached so as to penetrate the floor slab S of the lower floor. While fitting the straight pipe portion 32 of the piece receiving pipe 3a with the mouth, as shown in FIG. 3, the receiving pipe 31 of the piece receiving pipe 3a with the ring-shaped elastic seal material interior receiving opening is connected to the floor slab of the upper floor. It arrange | positions so that the through-hole H of S may be faced.
(3) As shown in FIG. 3, an operator on the floor slab S on the upper floor (may be the same operator as the above-mentioned operator) is connected to the joint unit with the resin short pipe 2 a side at the top. It passes through the through hole 11 of the floor slab S of the upper floor and is fitted to the receiving port 31 of the ring-shaped elastic seal material interior receiving ported piece receiving pipe 3a.
(4) The through hole 11 is filled with mortar M, and the collective joint 1a is fixed to the floor slab S.
(5) The above-described (2) to (4) are repeated to form a drainage conduit.

上記配管構造Aは、以下のような優れた効果を備えている。
(1)金属製の集合継手1aに耐火性樹脂短管2aが接続されているので、もし火災が発生しても、火災の熱によって熱膨張性黒鉛が膨張して耐火性樹脂短管2aが閉塞する。したがって、他の階の人が避難完了できるまでの間、集合継手1aの内部を通って、他の階への延焼することを防止することができる。
(2)耐火性樹脂短管2aとリング状弾性シール材内装受口付片受直管3aによって接続されるので、高所で押し輪18を用いたメカニカル接続の必要がなく、かつ、狭いパイプスペースで行う必要がない。したがって、施工性と施工管理が向上するとともに、作業員の安全性も確保できる。
(3)耐火性樹脂短管2aと下側の階の集合継手1aとがリング状弾性シール材内装受口付片受直管3aによって接続されているので、劣化や排水立管部分に詰まり等の不具合が生じた場合に、高所でメカニカル接続を解除するという作業をしなくても、直管部32から上部受部11を押し上げて取りはずし、図4に示すように、リング状弾性シール材内装受口付片受直管3aを下方に押し下げれば、樹脂短管2aから受口31が容易に離脱し、下の階からの作業でリング状弾性シール材内装受口付片受直管3aを容易に取り除ける。すなわち、更新作業を容易に行える。また、更新作業をいずれの階でも平行して行うことができ、更新作業の効率化を図ることができる。
(4)耐火性樹脂短管2aの長さは自由に設定できるため、床スラブSの厚みや集合継手1aの設置位置に応じた対応が可能となる。
(5)予め耐火性樹脂短管2aが工場で集合継手1aに接続されているので、集合継手1aと耐火性樹脂短管2aとの接続部の接続不良を工場の出荷前に検査可能であり、集合継手1aと耐火性樹脂短管2aと接続部での接続強度ならびに止水性を確実に確保できる。
(6)集合継手1a部分以外が、すべて樹脂の配管材で形成され、軽量であるため施工性に優れる。
(7)締め付けリング13がリング本体14に係止された落下防止手段15を備え、この落下防止手段15の押圧部15bが耐火性樹脂短管2aの周面にばね力によって押圧状態に保たれているので、火災が発生し、耐火性樹脂短管2aが軟化してくると、押圧部15bがさらにバネ力によって耐火性樹脂短管2aの周面に食い込む。したがって、落下防止手段15およびリング本体14を介して耐火性樹脂短管2aが集合継手1aに支持された状態が確保され、火災が発生し、耐火性樹脂短管2aの押し輪18より上の部分や押し輪18が焼失したり、熱変形したりしても落下することがなく、より延焼防止性能が高い。
なお、リング状弾性シール材内装受口付片受直管3aの直管部32を耐火性樹脂管で形成しておくと、この直管部を天井配管等の場合、天井などの防火区画貫通部として用いることもできる。
The piping structure A has the following excellent effects.
(1) Since the refractory resin short tube 2a is connected to the metal collective joint 1a, even if a fire occurs, the heat-expandable graphite expands due to the heat of the fire and the refractory resin short tube 2a Block. Therefore, it is possible to prevent the fire from spreading to the other floor through the inside of the collective joint 1a until the person on the other floor can complete the evacuation.
(2) Since it is connected by the fire-resistant resin short pipe 2a and the ring-shaped elastic seal material interior receiving piece-receiving straight pipe 3a, there is no need for mechanical connection using the push ring 18 at a high place, and a narrow pipe There is no need to do it in space. Therefore, workability and construction management are improved, and worker safety can be secured.
(3) Since the fireproof resin short pipe 2a and the lower floor collective joint 1a are connected by the ring-shaped elastic seal material interior receiving piece-receiving pipe 3a, the deterioration and the drainage pipe are clogged. In the case where the above problem occurs, the upper receiving part 11 is pushed up and removed from the straight pipe part 32 without performing the work of releasing the mechanical connection at a high place, and as shown in FIG. If the piece receiving pipe 3a with the interior receiving port is pushed down, the receiving port 31 is easily detached from the short resin pipe 2a, and the piece receiving tube with the ring-shaped elastic seal material receiving body is received from the lower floor. 3a can be easily removed. That is, the update work can be easily performed. In addition, the update work can be performed in parallel on any floor, and the efficiency of the update work can be improved.
(4) Since the length of the refractory resin short pipe 2a can be freely set, it is possible to cope with the thickness of the floor slab S and the installation position of the collective joint 1a.
(5) Since the refractory resin short pipe 2a is connected to the collective joint 1a in advance at the factory, it is possible to inspect the connection failure of the connecting portion between the collective joint 1a and the refractory resin short pipe 2a before shipment from the factory. The connecting joint 1a, the fireproof resin short pipe 2a, and the connection strength and the water stoppage at the connecting portion can be reliably ensured.
(6) The parts other than the collective joint 1a are all formed of a resin piping material, and are lightweight, and thus have excellent workability.
(7) The tightening ring 13 is provided with the fall prevention means 15 locked to the ring body 14, and the pressing portion 15b of the fall prevention means 15 is kept in a pressed state by the spring force on the peripheral surface of the fireproof resin short tube 2a. Therefore, when a fire occurs and the refractory resin short tube 2a is softened, the pressing portion 15b further bites into the peripheral surface of the refractory resin short tube 2a by a spring force. Therefore, a state in which the fire-resistant resin short pipe 2a is supported by the collective joint 1a through the fall prevention means 15 and the ring body 14 is secured, a fire is generated, and the upper side of the push ring 18 of the fire-resistant resin short pipe 2a. Even if the portion or the press ring 18 is burnt out or thermally deformed, it does not fall, and the fire spread prevention performance is higher.
In addition, if the straight pipe portion 32 of the ring-shaped elastic sealing material interior receiving piece single straight pipe 3a is formed of a refractory resin pipe, when the straight pipe portion is a ceiling pipe or the like, it penetrates a fire prevention section such as a ceiling. It can also be used as a part.

図8は。本発明の配管構造の第2の実施の形態をあらわしている。
図8に示すように、この配管構造Bは、樹脂短管2bが塩化ビニル樹脂製VPパイプからなり、この樹脂短管2bがステンレス鋼によって形成された締め付け金具19のフランジ部19aを集合継手1bの下端フランジ部12に締め付けることによって押し輪18により集合継手1bに接続固定されている。
FIG. The 2nd Embodiment of the piping structure of this invention is represented.
As shown in FIG. 8, in this piping structure B, the resin short pipe 2b is made of a vinyl chloride resin VP pipe, and the resin short pipe 2b is made of stainless steel and the flange portion 19a of the fastening bracket 19 is connected to the collective joint 1b. It is connected and fixed to the collective joint 1b by a push ring 18 by being fastened to the lower end flange portion 12 of the inner ring.

また、締め付け金具19は、そのフランジ部19aの下方に金属製筒状体としての筒部19bを有している。
そして、筒部19bと、樹脂短管2bとの環状のすき間には、シート状の耐火熱膨張材料(例えば、積水化学工業株式会社の商品名フィブロック)19cが管の径方向に積層された状態で充填されている。
Moreover, the fastening fitting 19 has a cylindrical portion 19b as a metallic cylindrical body below the flange portion 19a.
And in the annular gap between the cylindrical portion 19b and the resin short tube 2b, a sheet-like fire-resistant and thermally expandable material (for example, a trade name “Firock” manufactured by Sekisui Chemical Co., Ltd.) 19c is laminated in the radial direction of the tube. It is filled in a state.

樹脂短管2bと下の階の集合継手1bとは、図8では詳細にあらわしていないが、上記リング状弾性シール材内装受口付片受直管3aと同じ形状をしたリング状弾性シール材内装受口付片受直管3bで上記配管構造Aと同様にして接続されている。   Although the resin short pipe 2b and the lower joint assembly 1b are not shown in detail in FIG. 8, the ring-shaped elastic sealing material having the same shape as the ring-shaped elastic sealing material-incorporated single receiving pipe 3a is provided. It is connected in the same manner as the above-described piping structure A by a single receiving pipe 3b with an interior opening.

この配管構造Bは、上記のように、締め付け金具19の筒部19bと樹脂短管2bとのすき間に耐火熱膨張材料19cが充填されているので、火災発生時に熱膨張性樹脂材料19cが熱膨張することによって軟化した樹脂短管2bが押しつぶされて閉塞する。したがって、他の階の人が避難完了するまでの所定時間以上(例えば、1時間以上)火災発生階から他の階への延焼を防止することができる。   As described above, the piping structure B is filled with the refractory thermal expansion material 19c between the cylindrical portion 19b of the fastening bracket 19 and the resin short tube 2b, so that the thermal expansion resin material 19c is heated when a fire occurs. The short resin tube 2b softened by the expansion is crushed and closed. Therefore, it is possible to prevent the spread of fire from the fire occurrence floor to another floor for a predetermined time or more (for example, 1 hour or more) until a person on another floor completes evacuation.

本発明は、上記の実施の形態に限定されない。例えば、上記の実施の形態では、集合継手と樹脂短管とが予め工場で接続されていたが、施工現場で現場の状況にあわせて長尺パイプを切断して所望長さの樹脂短管とし、この樹脂短管を現場施工で予め集合継手に接続しても構わない。
また、上記第1の実施の形態では、締め付けリングがリング本体に係止された落下防止手段を備えていたが、上記以外の形状の落下防止手段を設けるようにしても構わないし、落下防止手段はなくても構わない。
The present invention is not limited to the above embodiment. For example, in the above embodiment, the collective joint and the resin short pipe are connected in advance at the factory, but the long pipe is cut at the construction site according to the situation at the site to obtain a resin short pipe of a desired length. The short resin pipe may be connected to the joint joint in advance by site construction.
Further, in the first embodiment, the fastening ring is provided with the fall prevention means locked to the ring body. However, the fall prevention means having a shape other than the above may be provided. It does n’t matter.

A 配管構造
B 配管構造
1a 集合継手
11 上部受口
11a リング状弾性シール材
12 下端フランジ部
13 締め付けリング
14 リング本体
14a 係止孔
14b 係止孔
15 落下防止手段
15a 係止部
15b 押圧部
15c 拡径レバー部
16 横枝管接続口
17 ボルト
18 押し輪
19 締め付け金具
19a フランジ部
19b 筒部
19c 耐火熱膨張材料
2a 耐火性樹脂短管
2b 樹脂短管
3a リング状弾性シール材内装受口付片受直管
3b リング状弾性シール材内装受口付片受直管
31 受口
32 直管部
33 受口
4 横枝管
S 床スラブ
M モルタル
H 貫通孔
A Piping structure B Piping structure 1a Collective joint 11 Upper receiving port 11a Ring-shaped elastic seal material 12 Lower end flange portion 13 Tightening ring 14 Ring body 14a Locking hole 14b Locking hole 15 Fall prevention means 15a Locking portion 15b Pressing portion 15c Expansion Diameter lever portion 16 Side branch pipe connection port 17 Bolt 18 Push ring 19 Fastening bracket 19a Flange portion 19b Tube portion 19c Fireproof thermal expansion material 2a Fireproof resin short tube 2b Resin short tube 3a Ring-shaped elastic seal material with internal receptacle Straight pipe 3b Single straight pipe 31 with ring-shaped elastic sealing material interior receptacle 31 Receptacle 32 Straight pipe portion 33 Receptacle 4 Side branch pipe S Floor slab M Mortar H Through hole

Claims (5)

各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続されている排水システムの配管構造において、
前記接続立管部が、樹脂短管と、合成樹脂製のやりとり継手とを備え、
前記樹脂短管が、前記金属製管継手の下端に接続されていて、
前記やりとり継手が、やりとり可能なリング状弾性シール材内装受口と、このリング状弾性シール材内装受口に連設された直管部を有し、
この直管部が、下の階の金属製管継手の上部受口に嵌合接続されるとともに、
前記リング状弾性シール材内装受口が、前記直管部と前記上部受口との嵌合が解除されるまで前記やりとり継手を押し上げ可能に前記樹脂短管に嵌合していて、
かつ、前記樹脂短管が、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管であることを特徴とする排水システムの配管構造。
In the piping structure of the drainage system in which metal pipe joints are provided so as to penetrate the floor slab of each floor up and down, and the upper and lower metal pipe joints are connected via a connection stand pipe,
The connecting stand pipe portion includes a resin short pipe and a synthetic resin exchange joint,
The resin short pipe is connected to the lower end of the metal pipe joint,
The exchange joint has an exchangeable ring-shaped elastic seal material interior receiving port, and a straight pipe portion connected to the ring-shaped elastic seal material interior reception port,
This straight pipe part is fitted and connected to the upper receptacle of the metal pipe joint on the lower floor,
The ring-shaped elastic seal material interior receiving port is fitted to the resin short tube so that the exchange joint can be pushed up until the fitting between the straight pipe portion and the upper receiving port is released,
And the piping structure of the drainage system characterized by the said resin short pipe | tube being a refractory resin pipe | tube which contains a thermal expansion agent in the resin layer of the thickness direction, and is obstruct | occluded by the thermal expansion of the said thermal expansion agent.
やりとり継手の直管部が、熱熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管で形成されている請求項1に記載の排水システムの配管構造。 2. The drainage system according to claim 1 , wherein the straight pipe portion of the exchange joint is formed of a refractory resin pipe that includes a thermal thermal expansion agent in a resin layer in a thickness direction and is closed by thermal expansion of the thermal expansion agent . Piping structure. 各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続されている排水システムの配管構造において、
前記接続立管部が、樹脂短管と、合成樹脂製のやりとり継手とを備え、
前記樹脂短管が、前記金属製管継手の下端に接続されていて、
前記やりとり継手が、やりとり可能なリング状弾性シール材内装受口と、このリング状弾性シール材内装受口に連設された直管部を有し、
この直管部が、下の階の金属製管継手の上部受口に嵌合接続されるとともに、
前記リング状弾性シール材内装受口が、前記直管部と前記上部受口との嵌合が解除されるまで前記やりとり継手を押し上げ可能に前記樹脂短管に嵌合していて、
かつ、前記樹脂短管の金属製管継手の下端から突出した部分の上端部が、金属製筒状体によって囲繞されていて、金属製筒状体と前記樹脂短管との環状のすき間に耐火熱膨張性材料が充填されていることを特徴とする排水システムの配管構造。
In the piping structure of the drainage system in which metal pipe joints are provided so as to penetrate the floor slab of each floor up and down, and the upper and lower metal pipe joints are connected via a connection stand pipe,
The connecting stand pipe portion includes a resin short pipe and a synthetic resin exchange joint,
The resin short pipe is connected to the lower end of the metal pipe joint,
The exchange joint has an exchangeable ring-shaped elastic seal material interior receiving port, and a straight pipe portion connected to the ring-shaped elastic seal material interior reception port,
This straight pipe part is fitted and connected to the upper receptacle of the metal pipe joint on the lower floor,
The ring-shaped elastic seal material interior receiving port is fitted to the resin short tube so that the exchange joint can be pushed up until the fitting between the straight pipe portion and the upper receiving port is released,
And the upper end part of the part which protruded from the lower end of the metal pipe joint of the said resin short pipe is surrounded by the metal cylindrical body, and fireproofing is carried out between the cyclic | annular gaps between a metal cylindrical body and the said resin short pipe. A drainage system piping structure, which is filled with a thermally expandable material .
金属製管継手が、集合継手である請求項1〜請求項3のいずれかに記載の排水システムの配管構造。 The pipe structure of the drainage system according to any one of claims 1 to 3, wherein the metal pipe joint is a collective joint . 各階の床スラブを上下に貫通するように金属製管継手が設けられ、上下の金属製管継手が接続立管部を介して接続され、
前記接続立管部が、前記金属製管継手の下端に接続された樹脂短管と、この樹脂短管に接続されるリング状弾性シール材内装受口を備えた樹脂製管継手とを少なくとも含む複数の樹脂配管材が上下方向に接続されて形成されるとともに、
前記樹脂短管が、熱膨張剤を厚み方向の樹脂層中に含み、前記熱膨張剤の熱膨張によって閉塞する耐火性樹脂管である排水システムの配管構造の施工方法であって、
前記金属製管継手の下端に予め前記樹脂短管を接続した継手ユニットを、
前記樹脂短管側を先頭にして前記床スラブ上から床スラブに設けられた貫通孔に挿入し、
前記床スラブ下方で下の階の前記金属製管継手に接続された前記リング状弾性シール材内装受口を備えた前記樹脂製管継手の受口に前記樹脂短管の下端部を水密嵌合させる工程を上層階に向かって繰り返すことを特徴とする排水システムの配管構造の施工方法。
Metal pipe joints are provided so as to penetrate the floor slab of each floor up and down, and the upper and lower metal pipe joints are connected via a connection stand pipe section,
The connection stand pipe portion includes at least a resin short pipe connected to a lower end of the metal pipe joint and a resin pipe joint provided with a ring-shaped elastic seal material interior receiving port connected to the resin short pipe. While a plurality of resin piping materials are formed connected in the vertical direction,
The resin short pipe includes a thermal expansion agent in a resin layer in a thickness direction, and is a construction method of a piping structure of a drainage system that is a fire-resistant resin pipe closed by thermal expansion of the thermal expansion agent,
The coupling unit connected advance the resin short tube to the lower end of the metal pipe coupling,
Insert the resin short pipe side into the through hole provided in the floor slab from above the floor slab,
The lower end of the watertight fit of the resin short tube socket of the resin pipe joint having the floor slab downwardly by the ring-like elastic sealing member interior socket connected to the metal fittings downstairs The construction method of the piping structure of the drainage system characterized by repeating the process to make toward the upper floor.
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