JP2005137194A - Construction method for fire protection structure at bus duct penetrating part in building, and the fire protection structure at bus duct penetrating part in building - Google Patents

Construction method for fire protection structure at bus duct penetrating part in building, and the fire protection structure at bus duct penetrating part in building Download PDF

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JP2005137194A
JP2005137194A JP2004293431A JP2004293431A JP2005137194A JP 2005137194 A JP2005137194 A JP 2005137194A JP 2004293431 A JP2004293431 A JP 2004293431A JP 2004293431 A JP2004293431 A JP 2004293431A JP 2005137194 A JP2005137194 A JP 2005137194A
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bus duct
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Tomohiro Honda
友弘 本田
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire protection structure at a bus duct penetrating part in a building, corresponding to the fire-resistance standards of two hours or longer, included in the fire-resistance test of The Building Center of Japan. <P>SOLUTION: A fire-resistant partition plate 4 is clamped and fixed with a fixture 3, composed of a support member, to which a locking member made of a round bar or a square steel rod is fitted, and a fastening tool 5 made of a round steel pipe or a square steel pipe. The contact face or the gap, between the fire-resistant partition plate and a bus duct 1, is filled with a heat-resistant sealing material 7 and an end material of the fire-resistant partition plate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ビルやマンション、工場等における大きな建物における壁や床等の開口部を貫通するバスダクトの防火構造に関し、更に詳しくは、日本建築センターの１時間の耐火試験に対応出来る新規な建物バスダクト貫通部の防火構造を提供するものである。   The present invention relates to a fire prevention structure for a bus duct penetrating through openings such as walls and floors in large buildings in buildings, condominiums, factories, etc., and more particularly, a novel building bus duct capable of supporting a one-hour fire resistance test at the Japan Architecture Center. The fire prevention structure of the penetration part is provided.

従来、ビルやマンション、工場等における大きな建物においては、建物が出火した場合に他の部屋への延焼を防止するためにいくつかの区画に仕切っており、それぞれの境界の壁や床に耐火スラブで防火区画を設けている。   Conventionally, large buildings in buildings, condominiums, factories, etc. have been divided into several sections in order to prevent the spread of fire to other rooms when the building fires, and refractory slabs are formed on the walls and floors of each boundary. There is a fire prevention zone.

これらの構造体を示すものとして特公平５−５２１２２号「建物耐火スラブの貫通部防火構造」は、「建物の耐火スラブに開設されてケーブル等の貫通物が貫通する貫通孔に耐火材で防火空間を形成し、この防火空間内には結合材を用いて吸熱性耐火材と熱膨張性耐火材の混合物又は吸熱性及び熱膨張性を有する耐火材を粒径１〜25ｍｍの顆粒状に成形してなる吸熱性。熱膨張性顆粒状耐火充填材を充填し、上記防火空間内において貫通物を吸熱性・熱膨張性顆粒状体か充填材で完全に包囲した建物耐火スラブの貫通部防火構造」が開示されている。   To show these structures, Japanese Patent Publication No. 5-52122 “Fire-proofing structure for building refractory slabs” is “Fireproofing with fire-resistant materials in the through-holes that are opened in building refractory slabs and through which penetrations such as cables pass. A space is formed, and a mixture of heat-absorbing fire-resistant material and heat-expandable fire-resistant material or heat-resistant and heat-expandable fire-resistant material is formed into granules with a particle size of 1 to 25 mm using a binder in the fire-proof space. The building fireproof slab penetration fireproof, filled with thermally expandable granular refractory filler and completely enclosing the penetrating material with the endothermic and thermally expandable granular material or filler in the fireproof space. "Structure" is disclosed.

さらに特許第２９１６６６８号「ケーブル貫通部の防火構造」は、「複数のケーブルが、ケーブルラック内に収容された状態で、構造物の隔壁若しくは床壁を貫通する壁貫通孔に貫通配置され、上記複数のケーブル及びケーブルトラックの外周囲と上記壁貫通孔の開口部との間の隙間が耐火性仕切板により遮蔽されたケーブル貫通部の防火構造において、上記複数のケーブル及びケーブルラックの外周囲を、上記壁貫通孔の片側開口部から上記ケーブルの長手方向外側範囲にわたり覆う防火パテ塗着部と、この防火パテ塗着部を上記ケーブルの長手方向に直交する方向の両側から挟んで遮蔽する一対の耐火性遮蔽板と、この一対の遮蔽板を互いに独立して上記ケーブルトラックに対し着脱可能に位置固定する少なくとも一対の固定手段とを備えているケーブル貫通部の防火構造」が開示されている。   Further, Japanese Patent No. 2916668 “Fire-proofing structure of cable penetration part” has “a plurality of cables housed in a cable rack and arranged through a wall through-hole penetrating a partition wall or floor wall of the structure, In the fire prevention structure of the cable penetration part in which the gap between the outer periphery of the plurality of cables and cable tracks and the opening of the wall through hole is shielded by the fireproof partition plate, the outer periphery of the plurality of cables and the cable rack is provided. A fire-resistant putty-coated portion covering the one-side opening of the wall through-hole from the outside in the longitudinal direction of the cable, and a pair for shielding the fire-resistant putty-coated portion from both sides in a direction perpendicular to the longitudinal direction of the cable And a pair of fixing means for detachably fixing the pair of shielding plates to the cable track independently of each other. And fire the structure of the cable penetration portion has "is disclosed.

しかしながら従来の防火構造は、いずれも日本建築センターの２時間の耐火試験に合格するために、ロックウールを用いる場合には２００ｋｇ/ｍ３の充填密度で充填したり、防火パテを使用する場合には厚く整形すると剥離や脱落という危険性を有していたため、顆粒状からなる耐火充填材を用いたり一対の遮蔽板を用いてこれらを固定具で固定する等の対応をしていた。
特公平５−５２１２２号 特許第２９１６６６８号 However, all of the conventional fire prevention structures pass the 2-hour fire resistance test of Nippon Building Center. When rock wool is used, it is filled at a packing density of 200 kg / m 3 or when fire prevention putty is used. Since there was a risk of peeling or dropping off when it was thickly shaped, measures were taken such as using a refractory filler made of granules or fixing a pair of shielding plates with a fixture.
Japanese Patent Publication No. 5-52122 Japanese Patent No. 2916668

近年、上記日本建築センターの耐火試験の時間が２時間から１時間へと改正されるようになり、簡易な構造体でしかも耐火特性に優れた防火構造の開発が建築業界の中で望まれていた。   In recent years, the fire resistance test time at the Japan Building Center has been revised from 2 hours to 1 hour, and the development of a fire prevention structure with a simple structure and excellent fire resistance has been desired in the construction industry. It was.

また従来の構造体のようにロックウール等のような繊維状充填材を用いること無く、公害上対策にも優れた素材を用いる新規な構造物の開発も併せて望まれていた。   In addition, there has been a demand for the development of a new structure using a material excellent in measures against pollution without using a fibrous filler such as rock wool as in the conventional structure.

本発明者は掛かる課題を解決するために鋭意研究したところ、安価な丸棒からなる係止具や該係止具に嵌合する中空棒を耐火仕切板の固定具として用い、更に前記耐火仕切板上面を丸鋼管製の固着具と該固着具内径に挿通する端子状の取付け金具をビス固定することによって、耐火仕切板の位置がずれないように固定した後に耐熱シール材で耐火仕切材とバスダクトとの間の隙間を充填することによって密封状態に出来る新規な建物バスダクト貫通部の防火構造工法及び防火構造自体を提供するものである。   The present inventor has intensively studied to solve the problem to be applied. As a result, an inexpensive fastener made of a round bar or a hollow rod fitted to the fastener is used as a fixture of the fireproof partition plate, and further the fireproof partition. Fix the refractory partition plate with a heat-resistant sealant after fixing the position of the refractory partition plate by fixing the screw on the upper surface of the plate by screwing a fixing tool made of round steel pipe and a terminal-like mounting bracket inserted through the inner diameter of the fixture. It is intended to provide a novel fire prevention structure construction method for a building bus duct penetration and a fire prevention structure itself which can be sealed by filling a gap with the bus duct.

すなわち本発明の第一は、バスダクト１が貫通している床スラブ１２に設けられた開口部９に、貫通枠２又は固定具３を設定する第一工程と、
前記開口部９合わせて切断した耐火仕切材４を、開口部９全体に充填し、又は開口部９上に被覆する第二工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第三工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 That is, the first of the present invention is a first step of setting the through frame 2 or the fixture 3 in the opening 9 provided in the floor slab 12 through which the bus duct 1 passes,
A second step of filling the entire opening 9 with the fireproof partition material 4 cut along the opening 9 or covering the opening 9;
It is a fireproof structure construction method for a building bus duct penetrating portion characterized by comprising a third step of filling the contact surface or gap between the fireproof partition material 4 and the bus duct 1 with a filler.

本発明の第二は、前記バスダクト１は、床スラブ開口面の近傍箇所に予め延焼防止剤を塗布してあることを特徴とする請求項１記載の建物バスダクト貫通部の防火構造工法である。   The second aspect of the present invention is the fire prevention structure construction method for a building bus duct penetrating portion according to claim 1, wherein the bus duct 1 is preliminarily coated with a fire spread preventing agent in the vicinity of the floor slab opening surface.

本発明の第三は、バスダクト１が貫通している床スラブ１２に設けられた開口部９に、床平面上に貫通枠２の上部が位置するように設定する第一工程と、
該貫通枠２の端部から折り曲げ部を有する係止部材１２と係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１に並列に設置する第二工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第三工程と、
必要において、第三工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第四工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第五工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 The third step of the present invention is a first step in which the opening 9 provided in the floor slab 12 through which the bus duct 1 passes is set so that the upper part of the through frame 2 is positioned on the floor plane;
A fixing member 3 including a locking member 12 having a bent portion from an end of the through frame 2 and a support member 13 adjusted to a predetermined length according to the size of the locking member 12 is attached to the bus duct 1. A second step to be installed in parallel;
A third step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
If necessary, a fourth step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the third step, and fixing the mounting bracket 8 at the end of the fixing material 5;
It is a fire prevention structure construction method for a building bus duct penetrating portion characterized by comprising a fifth step of filling the contact surface or gap between the fireproof partition material 4 and the bus duct 1 with a filler.

本発明の第四は、前記固定具３は、折り曲げ部を有する係止部材１２として丸鋼棒或いは角鋼棒からなり、該係止部材１２に嵌合して長さ調整可能な支持部材１３として前記丸鋼棒の直径より大きい内径を有する中空管或いは平空管、又は前記角鋼棒より大きい内径を有する角空管であることを特徴とする請求項１又は請求項３記載の建物バスダクト貫通部の防火構造工法である。   According to a fourth aspect of the present invention, the fixture 3 is formed of a round steel bar or a square steel bar as the locking member 12 having a bent portion, and the length of the support member 13 can be adjusted by fitting to the locking member 12. The building bus duct penetration according to claim 1 or 3, wherein the round pipe is a hollow pipe or a flat hollow pipe having an inner diameter larger than a diameter of the round steel bar, or a square hollow pipe having an inner diameter larger than the square steel bar. It is a fire prevention structure method of the part.

本発明の第五は、前記充填材は、耐熱シール材７、耐火仕切板端材１５を単独或いは組み合わせて充填することを特徴とする請求項１又は請求項３記載の建物バスダクト貫通部の防火構造工法である。   A fifth aspect of the present invention is that the building material is filled with the heat-resistant sealing material 7 and the fire-resistant partition plate end material 15 singly or in combination. It is a structural method.

本発明の第六は、バスダクト１が貫通している床スラブ１２に設けられた開口部９に、床平面より高い位置に貫通枠２の上部が位置するように設定する第一工程と、
該貫通枠２の端部から折り曲げ部を有する係止部材１２と係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１に並列に設置する第二工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第三工程と、
第三工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第四工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、耐火仕切板端材１４と耐熱シール材７を単独或いは組み合わせて充填する第五工程と、
前記充填材の充填箇所より上方のバスダクト１周面に延焼防止剤１６を塗布する第六工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 The sixth step of the present invention is a first step in which the opening 9 provided in the floor slab 12 through which the bus duct 1 passes is set so that the upper part of the through frame 2 is located at a position higher than the floor plane;
A fixing member 3 including a locking member 12 having a bent portion from an end of the through frame 2 and a support member 13 adjusted to a predetermined length according to the size of the locking member 12 is attached to the bus duct 1. A second step to be installed in parallel;
A third step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A fourth step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the third step, and fixing the mounting bracket 8 at the end of the fixing material 5;
A fifth step of filling the contact surface or gap between the fireproof partition member 4 and the bus duct 1 with the fireproof partition plate end member 14 and the heat resistant sealant 7 alone or in combination;
A fire prevention structure construction method for a building bus duct penetrating portion, characterized by comprising a sixth step of applying a fire spread inhibitor 16 to the circumferential surface of the bus duct 1 above the filling portion of the filler.

本発明の第七は、バスダクト１が貫通している壁スラブに設けられた開口部９に、貫通枠２又は固定具３を設定する第一工程と、
前記開口部９合わせて切断した耐火仕切材４を、開口部９全体に充填し、又は開口部９上に被覆する第二工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第三工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 The seventh step of the present invention is a first step of setting the through frame 2 or the fixture 3 in the opening 9 provided in the wall slab through which the bus duct 1 passes,
A second step of filling the entire opening 9 with the fireproof partition material 4 cut along the opening 9 or covering the opening 9;
It is a fireproof structure construction method for a building bus duct penetrating portion characterized by comprising a third step of filling the contact surface or gap between the fireproof partition material 4 and the bus duct 1 with a filler.

本発明の第八は、バスダクト１が貫通している壁スラブに設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を並列に設置する第一工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第二工程と、
第二工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第三工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第四工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 The eighth aspect of the present invention is that the opening 9 provided in the wall slab through which the bus duct 1 penetrates has an engaging member 12 having a bent portion from the end of the opening 9 and the size of the engaging member 12. A first step of installing the bus duct 1 in parallel with the fixture 3 comprising a support member 13 adjusted to a predetermined length according to
A second step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A third step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the second step, and fixing the mounting bracket 8 at the end of the fixing material 5;
It is a fire prevention structure construction method for a building bus duct penetrating portion, characterized by comprising a fourth step of filling a filler or filler into the contact surface or gap between the fireproof partition material 4 and the bus duct 1.

本発明の第九は、バスダクト１が貫通している壁スラブに設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を並列に設置する第一工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第二工程と、
第二工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８をビス６固定する第三工程と、
前記耐火仕切材４とバスダクト１との隙間に、耐火仕切板端材１４と耐熱シール材７を単独或いは組み合わせて充填する第四工程と、
前記耐熱シール材７充填箇所より上方のバスダクト１周面に延焼防止剤１６を塗布する第六工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法である。 According to a ninth aspect of the present invention, a locking member 12 having a bent portion from an end of the opening 9 in the opening 9 provided in the wall slab through which the bus duct 1 passes, and the size of the locking member 12 are provided. A first step of installing the bus duct 1 in parallel with the fixture 3 comprising a support member 13 adjusted to a predetermined length according to
A second step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A third step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the second step and fixing the mounting bracket 8 at the end of the fixing material 5 with screws 6;
A fourth step of filling the gap between the fireproof partition material 4 and the bus duct 1 with the fireproof partition plate end member 14 and the heat-resistant seal material 7 alone or in combination;
A fire prevention structure construction method for a building bus duct penetrating portion, comprising: a sixth step of applying a fire spread inhibitor 16 to the circumferential surface of the bus duct 1 above the place where the heat-resistant sealing material 7 is filled.

本発明の第十は、構造物の床又は壁スラブの貫通孔内に貫通するバスダクトを、上記貫通孔の開口部とバスダクトとの間を耐火材で遮蔽するバスダクト貫通部の防火構造において、
バスダクト１が貫通している床又は壁スラブに設けられた開口部９に、必要において設けられる貫通枠２と、
該貫通枠２、又は開口部壁面の両端部を連結する、折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３と、
前記開口部９の大きさに合わせて充填する耐火仕切材４と、
耐火仕切材４を固定する複数の固着材と、
前記耐火仕切材４とバスダクト１との接触面又は隙間を充填する耐熱シール材７又は耐火仕切板端材１５とからなる充填材とで構成されることを特徴とする建物バスダクト貫通部の防火構造である。 According to a tenth aspect of the present invention, there is provided a fire prevention structure for a bus duct penetrating portion that shields a bus duct penetrating into a through hole of a floor or wall slab of a structure with a fireproof material between the opening of the through hole and the bus duct.
A through frame 2 provided where necessary in an opening 9 provided in a floor or wall slab through which the bus duct 1 passes;
The through frame 2 or the both ends of the wall surface of the opening is connected to a locking member 12 having a bent portion and a support member 13 adjusted to a predetermined length according to the size of the locking member 12. Fixture 3;
A refractory partition material 4 to be filled in accordance with the size of the opening 9, and
A plurality of fixing materials for fixing the fireproof partition material 4;
A fire prevention structure for a building bus duct penetrating portion characterized by comprising a heat-resistant sealing material 7 or a fire-resistant partition plate end member 15 filling a contact surface or a gap between the fire-resistant partition material 4 and the bus duct 1. It is.

本発明の防火構造は、床面や壁面の端部から固定具３を設置した上に耐火仕切材４をバスダクト１を囲むように充填し、更にこれらの隙間に耐熱シール材を充填するだけで耐熱性や防火性に優れた防火構造を得ることができ、従来品のように耐火仕切材を複数段必要としないため安価に製造可能なものである。   The fire prevention structure of the present invention is obtained by installing the fixture 3 from the end of the floor or wall surface, filling the fire-resistant partition material 4 so as to surround the bus duct 1, and further filling the gap with a heat-resistant sealing material. A fire-proof structure having excellent heat resistance and fire-proof properties can be obtained, and unlike the conventional products, a plurality of fire-resistant partition materials are not required, and therefore it can be manufactured at low cost.

本発明の防火構造は、従来のように多数のロックウール等の耐熱材を用いなく、また圧縮されたロックウールの仕切り板表面には延焼防止材が塗布されているために、作業者が繊維質のウールを体内に吸収することは少なく安全である。   The fire-proof structure of the present invention does not use a large number of heat-resistant materials such as rock wool as in the prior art, and the fire spread preventing material is applied to the surface of the partition wall of the compressed rock wool. It is safe to absorb quality wool in the body.

本発明の防火構造は、上記のように従来構造に比較すると簡易な構造であるが、新しい日本建築センターで指定する１時間の耐火試験に十分に対応可能な構造を有するものである。   As described above, the fire prevention structure of the present invention is a simple structure as compared with the conventional structure, but has a structure that can sufficiently cope with the one-hour fire resistance test specified in the new Japan Building Center.

以下、図面を参照にして本発明の実施を詳細に説明するが、本発明の範囲はこれらに限定されるものではない。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the scope of the present invention is not limited thereto.

図１及び図２は、床面、特に水止めを兼ねた床バスダクト貫通部における防火構造を示す断面図と平面図である。   FIG.1 and FIG.2 is sectional drawing and a top view which show the fire prevention structure in the floor surface, especially the floor bus duct penetration part which served as the water stop.

床スラブ１２に設けられた開口部９を貫通するＷ３１０×Ｈ１３５ｍｍのバスダクト１を密封充填して防火構造とする場合、先ず開口部９に嵌合する貫通枠２をはめ込み、上部が約５ｃｍ程度上面に出るように固着設定する（第一工程）。   When the W310 × H135 mm bus duct 1 penetrating through the opening 9 provided in the floor slab 12 is hermetically sealed to form a fire prevention structure, first, the through frame 2 that fits into the opening 9 is fitted, and the upper part is about 5 cm above (1st process).

次いで図５に示されるように折り曲げ部を有する丸棒からなる係止部材１２と、該係止部材１１の外形より大きく、内部が中空形状である支持部１２とを開口部の大きさに併せて切断して嵌合した固定具３を、前記バスダクト１を直行するように囲んだバスダクト１の幅方向に並列に設置する（第二工程）。   Next, as shown in FIG. 5, the locking member 12 made of a round bar having a bent portion and the support portion 12 which is larger than the outer shape of the locking member 11 and has a hollow shape inside are combined with the size of the opening. The fixtures 3 cut and fitted are installed in parallel in the width direction of the bus duct 1 surrounded so as to be orthogonal to the bus duct 1 (second step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第三工程）が、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後に、バスダクト１を囲むように凹凸形状に切断することが好ましい。   Next, the refractory partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (third step). It is preferable to cut the refractory partition material 4 in accordance with the vertical and horizontal lengths of the opening, and then cut into a concavo-convex shape so as to surround the bus duct 1.

凹凸形状に切断された凹状の仕切材４は、固定具３の上に位置し、且つ、バスダクト１の外側に沿って開口部との間に押し込められ、一方の凸状仕切材の方はそのままではバスダクト１重なり合うために、重なり合わないように予めバスダクト１の形状に切断した後に、同様に固定具３の上に位置し、開口部との間に押し込めた。   The concave partitioning material 4 cut into the concavo-convex shape is positioned on the fixture 3 and pushed into the opening along the outside of the bus duct 1, and the one convex partitioning material is left as it is. Then, in order to overlap the bus duct 1, after being cut into the shape of the bus duct 1 in advance so as not to overlap, it was similarly positioned on the fixture 3 and pushed into the opening.

上記耐火仕切材４としては、ロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いたが、本発明に使用できる耐火仕切材４は、延焼防止効果を有し簡単に切断できる素材であれば全て応用できるものである。 As the fireproof partitioning material 4, a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. was applied to a thickness of about 1 mm on a plate having a thickness of 50 mm obtained by compressing rock wool at a pressure of 200 kg / m 3 . Although the material was used, the fireproof partitioning material 4 that can be used in the present invention can be applied to any material that has a fire spread preventing effect and can be easily cut.

第三工程で充填した耐火仕切材４表面を平らにした後に、複数の直径８ｍｍの丸鋼管製からなる固着材５と該丸鋼管の内径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第四工程）が、上記固着材５の押さえにより耐火仕切板４は、前記丸棒製固定具３との間に固定され開口部からの落剥は生じない。   After flattening the surface of the refractory partitioning material 4 filled in the third step, a plurality of fixing members 5 made of a round steel pipe having a diameter of 8 mm and a terminal-like shape having an end that is inserted with substantially the same diameter as the inner diameter of the round steel pipe The center hole (not shown) of the mounting bracket 8 is fixed with the piercing screw 6 in combination with the mounting bracket 8 (fourth step). The fireproof partition plate 4 is fixed to the round bar fixture by pressing the fixing material 5. 3 is fixed to 3 and no peeling from the opening occurs.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、耐熱シール材７を充填して、階下からの延焼を防止するようにしている（第五工程）。   Finally, since a gap is generated between the fireproof partition material 4 and the bus duct 1, the heat resistant seal material 7 is filled to prevent the spread of fire from the downstairs (fifth step).

本発明で使用する耐熱シール材７は、上記水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤にロックウールチップとを混合した粒土状のものが好ましいが、本発明に使用できる耐熱シール材７は、延焼防止効果を有し、簡単に充電可能なペースト素材であれば全て応用できるものである。   The heat-resistant sealing material 7 used in the present invention is preferably a grain-like material in which rock wool chips are mixed with a fire spread inhibitor such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. The sealing material 7 can be applied to any paste material that has a fire spread prevention effect and can be easily charged.

図３及び図４は、壁面と同一面とするバスダクト貫通部における別な形態の防火構造を示す断面図と平面図である。   FIG.3 and FIG.4 is sectional drawing and a top view which show the fire prevention structure of another form in the bus duct penetration part made into the same surface as a wall surface.

複数のバスダクト１が貫通している壁スラブ１３に設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材と係止部材の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を直行するように並列に設置する（第一工程）。   The opening 9 provided in the wall slab 13 through which the plurality of bus ducts 1 pass is provided with a predetermined length according to the size of the locking member having a bent portion from the end of the opening 9 and the size of the locking member. The fixing tool 3 composed of the support member 13 adjusted in the above manner is installed in parallel so as to go straight through the bus duct 1 (first step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第二工程）が、この場合、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後にバスダクト１を囲むように凹凸形状に切断した。   Next, the fireproof partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (second step). In this case, the fireproof partition material 4 was first cut according to the vertical and horizontal lengths of the opening, and then cut into an uneven shape so as to surround the bus duct 1.

凹凸形状に切断された凹状仕切材を、縦方向で固定具３の上に位置し、一方の凸状仕切材の方も縦方向で押し込めた場合に、バスダクト１の先端部と重なり合うために、重なり合わないように予めバスダクト１の先端部の形状に切断した後に、同様に固定具３の上に位置するようにして開口部との間に押し込めた。   When the concave partition material cut into the concavo-convex shape is positioned on the fixture 3 in the vertical direction and one convex partition material is also pushed in in the vertical direction, it overlaps with the front end portion of the bus duct 1, After cutting into the shape of the front end of the bus duct 1 in advance so as not to overlap, it was pushed between the openings so as to be positioned on the fixture 3 in the same manner.

上記耐火仕切材４としては、上記同様にロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いた。 As the fireproof partition material 4, similarly to the above, rock wool is compressed at a pressure of 200 kg / m 3 and the thickness is 50 mm, and a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer is about 1 mm thick. The applied material was used.

第二工程で充填した耐火仕切材４表面を平らにした後に、複数の丸鋼管製の固着材５と該丸鋼管の内径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第三工程）が、上記固着具５の押さえにより耐火仕切板４は、前記丸棒製固定具３との間に固定されるようになる。   After flattening the surface of the refractory partition material 4 filled in the second step, a plurality of round steel pipe fixing members 5 and terminal-like mounting brackets 8 having ends inserted with substantially the same diameter as the inner diameter of the round steel pipes; In combination, the center hole (not shown) of the mounting bracket 8 is fixed with the piercing screw 6 (third step). The fireproof partition plate 4 is fixed to the round bar fixing tool 3 by pressing the fixing tool 5. It becomes fixed to.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、耐熱シール材７を充填して、横室等からの延焼を防止するようにしている（第四工程）。   Finally, since a gap is formed between the fireproof partition material 4 and the bus duct 1, the heat resistant seal material 7 is filled to prevent the spread of fire from the horizontal chamber or the like (fourth step).

本発明で使用する耐熱シール材７は、上記水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤にロックウールチップとを混合した粒土状のものを用いた。   As the heat-resistant sealing material 7 used in the present invention, a granular soil material obtained by mixing rock wool chips with a fire spread inhibitor such as aluminum hydroxide, antimony trioxide, acrylic polymer or the like was used.

図６及び図７は、実施例１と同様に床面、特に水止めを兼ねた床バスダクト貫通部における防火構造を示す断面図と平面図である。   6 and 7 are a cross-sectional view and a plan view showing a fire prevention structure in the floor bus duct penetrating portion that also serves as a water surface, in particular, a water stopper, as in the first embodiment.

床スラブ１２に設けられた開口部９を貫通するＷ３１０×Ｈ１３５ｍｍのバスダクト１を密封充填して防火構造とする場合、先ず開口部９に嵌合する貫通枠２をはめ込み、上部が約５ｃｍ程度上面に出るように固着設定する（第一工程）。   When the W310 × H135 mm bus duct 1 penetrating through the opening 9 provided in the floor slab 12 is hermetically sealed to form a fire prevention structure, first, the through frame 2 that fits into the opening 9 is fitted, and the upper part is about 5 cm above (1st process).

次いで図１４に示されるように折り曲げ部を有する角鋼棒からなる係止部材１８と、該係止部材１８の外形より大きく、内部が中空形状である支持部１７とを開口部の大きさに併せて切断して嵌合した固定具３を、前記バスダクト１を直行するように囲んだバスダクト１の幅方向に並列に設置する（第二工程）。   Next, as shown in FIG. 14, a locking member 18 made of a square steel bar having a bent portion and a support portion 17 which is larger than the outer shape of the locking member 18 and has a hollow shape inside are combined with the size of the opening. The fixtures 3 cut and fitted are installed in parallel in the width direction of the bus duct 1 surrounded so as to be orthogonal to the bus duct 1 (second step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第三工程）が、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後に、バスダクト１を囲むように凹凸形状に切断することが好ましい。   Next, the refractory partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (third step). It is preferable to cut the refractory partition material 4 in accordance with the vertical and horizontal lengths of the opening, and then cut into a concavo-convex shape so as to surround the bus duct 1.

凹凸形状に切断された凹状の仕切材４は、固定具３の上に位置し、且つ、バスダクト１の外側に沿って開口部との間に押し込められ、一方の凸状の仕切材の方はそのままではバスダクト１重なり合うために、重なり合わないように予めバスダクト１の形状に切断した後に、同様に固定具３の上に位置し、開口部との間に押し込めた。   The concave partitioning material 4 cut into the concavo-convex shape is positioned on the fixture 3 and pushed into the opening along the outside of the bus duct 1, and one convex partitioning material is In order to overlap the bus duct 1 as it is, after being cut in advance into the shape of the bus duct 1 so as not to overlap, it was similarly positioned on the fixture 3 and pushed between the openings.

上記耐火仕切材４としては、ロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いたが、本発明に使用できる耐火仕切材４は、延焼防止効果を有し簡単に切断できる素材であれば全て応用できるものである。 As the fireproof partitioning material 4, a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. was applied to a thickness of about 1 mm on a plate having a thickness of 50 mm obtained by compressing rock wool at a pressure of 200 kg / m 3 . Although the material was used, the fireproof partitioning material 4 that can be used in the present invention can be applied to any material that has a fire spread preventing effect and can be easily cut.

第三工程で充填した耐火仕切材４表面を平らにした後の端部に、縦５ｍｍ、横５ｍｍの角鋼棒製からなる複数の固着材５と該角型棒の外径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第四工程）が、上記固着材５の押さえにより耐火仕切板４は、前記丸棒製固定具３との間に固定され開口部からの落剥は生じない。   At the end after flattening the surface of the refractory partition material 4 filled in the third step, a plurality of fixing members 5 made of square steel rods of 5 mm in length and 5 mm in width and substantially the same diameter as the outer diameter of the square rod The center hole (not shown) of the mounting bracket 8 is fixed with the piercing screw 6 in combination with the terminal-shaped mounting bracket 8 having the end to be inserted (fourth step). 4 is fixed between the round bar fixture 3 and does not peel off from the opening.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、先に耐火仕切板端材１５を充填し、その上から耐熱シール材７を充填して、階下からの延焼を防止するようにしている（第五工程）。   Finally, since there is a gap between the fireproof partition material 4 and the bus duct 1, the fireproof partition plate end material 15 is filled first, the heat resistant sealant 7 is filled from above, and the fire spread from the downstairs is performed. This is to prevent (fifth step).

さらに延焼効果を高めるために、前記耐熱シーツ充填箇所の上のバスダクト１周囲に約１０ｃｍ程度の縦幅に延焼防止材を塗布した（第六工程）。   In order to further enhance the fire spread effect, a fire spread preventive material was applied in a vertical width of about 10 cm around the bus duct 1 above the heat-resistant sheet filling portion (sixth step).

本発明で使用する耐熱シール材７は、上記水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤にロックウールチップとを混合した粒土状のものが好ましいが、本発明に使用できる耐熱シール材７は、延焼防止効果を有し、簡単に充電可能なペースト素材であれば全て応用できるものである。   The heat-resistant sealing material 7 used in the present invention is preferably a grain-like material in which rock wool chips are mixed with a fire spread inhibitor such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. The sealing material 7 can be applied to any paste material that has a fire spread prevention effect and can be easily charged.

図７及び図８は、実施例１及び実施例３と同様に床面、特に水止めを兼ねた床バスダクト貫通部における防火構造を示す断面図と平面図である。   7 and 8 are a cross-sectional view and a plan view showing a fire prevention structure in the floor bus duct penetrating portion also serving as a water stop, particularly as in the first and third embodiments.

本実施例では、床スラブ１２に設けられた開口部９を貫通するＷ３１０×Ｈ１３５ｍｍのバスダクト１を密封充填して防火構造とする場合、予め開口部近傍のバスダクト１の周囲に高さ約１５ｃｍ程度に延焼防止剤１６を塗布し、次いで開口部９に嵌合する貫通枠２をはめ込み、上部が約５ｃｍ程度上面に出るように固着設定する（第一工程）。   In the present embodiment, when a W310 × H135 mm bus duct 1 penetrating through the opening 9 provided in the floor slab 12 is hermetically sealed to form a fire prevention structure, the height around the bus duct 1 near the opening is about 15 cm in height. Then, the spread flame inhibitor 16 is applied, and then the through frame 2 fitted into the opening 9 is fitted and fixed so that the upper part protrudes about 5 cm (first step).

次いで図１４に示されるように折り曲げ部を有する角鋼棒からなる係止部材１８と、該係止部材１８の外形より大きく、内部が中空形状である支持部１７とを開口部の大きさに併せて切断して嵌合した固定具３を、前記バスダクト１を直行するように囲んだバスダクト１の幅方向に並列に設置する（第二工程）。   Next, as shown in FIG. 14, a locking member 18 made of a square steel bar having a bent portion and a support portion 17 which is larger than the outer shape of the locking member 18 and has a hollow shape inside are combined with the size of the opening. The fixtures 3 cut and fitted are installed in parallel in the width direction of the bus duct 1 surrounded so as to be orthogonal to the bus duct 1 (second step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第三工程）が、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後に、バスダクト１を囲むように凹凸形状に切断することが好ましい。   Next, the refractory partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (third step). It is preferable to cut the refractory partition material 4 in accordance with the vertical and horizontal lengths of the opening, and then cut into a concavo-convex shape so as to surround the bus duct 1.

凹凸形状に切断された凹状の仕切材４は、固定具３の上に位置し、且つ、バスダクト１の外側に沿って開口部との間に押し込められ、一方の凸状の仕切材の方はそのままではバスダクト１重なり合うために、重なり合わないように予めバスダクト１の形状に切断した後に、同様に固定具３の上に位置し、開口部との間に押し込めた。   The concave partitioning material 4 cut into the concavo-convex shape is positioned on the fixture 3 and pushed into the opening along the outside of the bus duct 1, and one convex partitioning material is In order to overlap the bus duct 1 as it is, after being cut in advance into the shape of the bus duct 1 so as not to overlap, it was similarly positioned on the fixture 3 and pushed between the openings.

上記耐火仕切材４としては、ロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いたが、本発明に使用できる耐火仕切材４は、延焼防止効果を有し簡単に切断できる素材であれば全て応用できるものである。 As the fireproof partitioning material 4, a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. was applied to a thickness of about 1 mm on a plate having a thickness of 50 mm obtained by compressing rock wool at a pressure of 200 kg / m 3 . Although the material was used, the fireproof partitioning material 4 that can be used in the present invention can be applied to any material that has a fire spread preventing effect and can be easily cut.

第三工程で充填した耐火仕切材４表面を平らにした後の端部に、縦５ｍｍ、横５ｍｍの角型鋼管１４からなる複数の固着材と該角型鋼管の内径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第四工程）が、上記固着材の押さえにより耐火仕切板４は、前記固定具３との間に固定され開口部からの落剥は生じない。   Inserted into the end after flattening the surface of the refractory partitioning material 4 filled in the third step with a plurality of fixing members made of a square steel pipe 14 having a length of 5 mm and a width of 5 mm and an inner diameter of the square steel pipe. The center hole (not shown) of the mounting bracket 8 is fixed with a piercing screw 6 in combination with a terminal-shaped mounting bracket 8 having an end portion (fourth step). , And is fixed between the fixtures 3 and does not peel off from the opening.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、先に耐火仕切板端材１５を充填して、階下からの延焼を防止するようにしている（第五工程）。   Finally, since a gap is formed between the fireproof partition material 4 and the bus duct 1, the fireproof partition plate end material 15 is first filled to prevent the spread of fire from the downstairs (fifth step). .

図１０及び図１１は、実施例２と同様に壁面と同一面とするバスダクト貫通部における別な形態の防火構造を示す断面図と平面図である。   10 and 11 are a cross-sectional view and a plan view showing another form of fire prevention structure in the bus duct penetrating portion which is the same surface as the wall surface as in the second embodiment.

複数のバスダクト１が貫通している壁スラブ１３に設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材と係止部材の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を直行するように並列に設置する（第一工程）。   The opening 9 provided in the wall slab 13 through which the plurality of bus ducts 1 pass is provided with a predetermined length according to the size of the locking member having a bent portion from the end of the opening 9 and the size of the locking member. The fixing tool 3 composed of the support member 13 adjusted in the above manner is installed in parallel so as to go straight through the bus duct 1 (first step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第二工程）が、この場合、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後にバスダクト１を囲むように凹凸形状に切断した。   Next, the fireproof partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (second step). In this case, the fireproof partition material 4 was first cut according to the vertical and horizontal lengths of the opening, and then cut into an uneven shape so as to surround the bus duct 1.

凹凸形状に切断された凹状仕切材を、縦方向で固定具３の上に位置し、一方の凸状仕切材の方も縦方向で押し込めた場合に、バスダクト１の先端部と重なり合うために、重なり合わないように予めバスダクト１の先端部の形状に切断した後に、同様に固定具３の上に位置するようにして開口部との間に押し込めた。   When the concave partition material cut into the concavo-convex shape is positioned on the fixture 3 in the vertical direction and one convex partition material is also pushed in in the vertical direction, it overlaps with the front end portion of the bus duct 1, After cutting into the shape of the front end of the bus duct 1 in advance so as not to overlap, it was pushed between the openings so as to be positioned on the fixture 3 in the same manner.

上記耐火仕切材４としては、上記同様にロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いた。 As the fireproof partition material 4, similarly to the above, rock wool is compressed at a pressure of 200 kg / m 3 and the thickness is 50 mm, and a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer is about 1 mm thick. The applied material was used.

第二工程で充填した耐火仕切材４表面を平らにした後の端部に、複数の角型鋼棒の固着材５と該角型鋼棒管の内径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第三工程）が、上記固着材５の押さえにより耐火仕切板４は、前記固定具３との間に固定されるようになる。   A terminal having an end portion inserted through the fixing member 5 of a plurality of square steel rods and an inner diameter of the square steel rod tube at the end portion after flattening the surface of the refractory partition material 4 filled in the second step. The center hole (not shown) of the mounting bracket 8 is fixed with the piercing screw 6 in combination with the mounting bracket 8 (third step). The fireproof partition plate 4 is fixed to the fixing bracket 3 by pressing the fixing material 5. And become fixed between.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、先に耐火仕切板端材を充填し、次いで耐熱シール材７を充填して横室等からの延焼を防止するようにしている（第四工程）。   Finally, since a gap is generated between the fireproof partition material 4 and the bus duct 1, the fireproof partition plate end material is first filled and then the heat resistant seal material 7 is filled to prevent the spread of fire from the lateral chamber or the like. (4th process).

本発明で使用する耐熱シール材７は、上記水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤にロックウールチップとを混合した粒土状のものを用いた。   As the heat-resistant sealing material 7 used in the present invention, a granular soil material obtained by mixing rock wool chips with a fire spread inhibitor such as aluminum hydroxide, antimony trioxide, acrylic polymer or the like was used.

図１２及び図１３は、実施例２及び実施例５と同様に壁面と同一面とするバスダクト貫通部における別な形態の防火構造を示す断面図と平面図である。   12 and 13 are a cross-sectional view and a plan view showing another form of fire prevention structure in the bus duct penetrating portion which is the same surface as the wall surface as in the second and fifth embodiments.

本実施例では、壁スラブ１１に設けられた開口部９を貫通するＷ３１０×Ｈ１３５ｍｍのバスダクト１を密封充填して防火構造とする場合、予め開口部近傍のバスダクト１の周囲に高さ約１５ｃｍ程度に延焼防止剤１６を塗布し、次いで開口部９に嵌合する貫通枠２をはめ込み、上部を固着設定する（第一工程）。   In the present embodiment, when the W310 × H135 mm bus duct 1 penetrating through the opening 9 provided in the wall slab 11 is hermetically sealed to form a fire prevention structure, the height around the bus duct 1 in the vicinity of the opening is about 15 cm in height. The fire spread inhibitor 16 is applied to the inner frame, and then the penetration frame 2 fitted into the opening 9 is fitted, and the upper part is fixedly set (first step).

次いで図１４に示されるように折り曲げ部を有する角鋼棒からなる係止部材１８と、該係止部材１８の外形より大きく、内部が中空形状である支持部１７とを開口部の大きさに併せて切断して嵌合した固定具３を、前記バスダクト１を直行するように囲んだバスダクト１の幅方向に並列に設置する（第二工程）。   Next, as shown in FIG. 14, a locking member 18 made of a square steel bar having a bent portion and a support portion 17 which is larger than the outer shape of the locking member 18 and has a hollow shape inside are combined with the size of the opening. The fixtures 3 cut and fitted are installed in parallel in the width direction of the bus duct 1 surrounded so as to be orthogonal to the bus duct 1 (second step).

次いで、前記開口部９の大きさに合わせて切断した耐火仕切材４を、前記固定具３の上に掛かるようにしながら開口部９全体に押し込み充填する（第三工程）が、この場合、先ず耐火仕切材４を開口部の縦・横の長さに合わせて切断した後に、バスダクト１を囲むように凹凸形状に切断することが好ましい。   Next, the refractory partition material 4 cut in accordance with the size of the opening 9 is pushed and filled into the entire opening 9 while being placed on the fixture 3 (third step). It is preferable to cut the refractory partition material 4 in accordance with the vertical and horizontal lengths of the opening, and then cut into a concavo-convex shape so as to surround the bus duct 1.

凹凸形状に切断された凹状の仕切材４は、固定具３の上に位置し、且つ、バスダクト１の外側に沿って開口部との間に押し込められ、一方の凸状の仕切材の方はそのままではバスダクト１重なり合うために、重なり合わないように予めバスダクト１の形状に切断した後に、同様に固定具３の上に位置し、開口部との間に押し込めた。   The concave partitioning material 4 cut into the concavo-convex shape is positioned on the fixture 3 and pushed into the opening along the outside of the bus duct 1, and one convex partitioning material is In order to overlap the bus duct 1 as it is, after being cut in advance into the shape of the bus duct 1 so as not to overlap, it was similarly positioned on the fixture 3 and pushed between the openings.

上記耐火仕切材４としては、ロックウールを２００ｋｇ/ｍ３の圧力で圧縮した厚みが５０ｍｍの板に、水酸化アルミニウム、三酸化アンチモン、アクリルポリマー等の延焼防止剤を約１ｍｍ厚に塗布したした素材を用いたが、本発明に使用できる耐火仕切材４は、延焼防止効果を有し簡単に切断できる素材であれば全て応用できるものである。 As the fireproof partitioning material 4, a fire spreader such as aluminum hydroxide, antimony trioxide, acrylic polymer, etc. was applied to a thickness of about 1 mm on a plate having a thickness of 50 mm obtained by compressing rock wool at a pressure of 200 kg / m 3 . Although the material was used, the fireproof partitioning material 4 that can be used in the present invention can be applied to any material that has a fire spread preventing effect and can be easily cut.

第三工程で充填した耐火仕切材４表面を平らにした後の端部に、縦５ｍｍ、横５ｍｍの角鋼棒製からなる複数の固着材５と該角型棒の外径とほぼ同じ径で挿通する端部を有する端子状の取付け金具８とを組み合わせて取付け金具８の中心孔（図示せず）をピアスビス６で固定した（第四工程）が、上記固着材５の押さえにより耐火仕切板４は、前記固定具３との間に固定され開口部からの落剥は生じない。   At the end after flattening the surface of the refractory partition material 4 filled in the third step, a plurality of fixing members 5 made of square steel rods of 5 mm in length and 5 mm in width and substantially the same diameter as the outer diameter of the square rod The center hole (not shown) of the mounting bracket 8 is fixed with the piercing screw 6 in combination with the terminal-shaped mounting bracket 8 having the end to be inserted (fourth step). 4 is fixed between the fixture 3 and does not peel off from the opening.

最後に、前記耐火仕切材４とバスダクト１との間に隙間が生ずるために、先に耐火仕切板端材１５を充填して、階下からの延焼を防止するようにしている（第五工程）。   Finally, since a gap is formed between the fireproof partition material 4 and the bus duct 1, the fireproof partition plate end material 15 is first filled to prevent the spread of fire from the downstairs (fifth step). .

本発明において、床スラブに開口部を設けてバスダクトを貫通させる実施例として、実施例１、実施例３及び実施例４で水止めを兼ねた床バスダクト貫通部における防火構造を示しているが、本発明の場合、貫通枠を床スラブより高く用いて水止めを兼ねる必要がない場合には、貫通枠２の端部を直接床スラブに固定して実施例同様に、貫通枠２の端部から折り曲げ部を有する係止部材１２と係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１に並列に設置した後に、前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填し、必要において、充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定して、前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填しても良い。   In the present invention, as an example of providing an opening in the floor slab and penetrating the bus duct, the fire prevention structure in the floor bus duct penetrating part also serving as a water stopper in Example 1, Example 3 and Example 4 is shown. In the case of the present invention, when it is not necessary to use the penetrating frame higher than the floor slab and also serve as a water stopper, the end of the penetrating frame 2 is fixed to the floor slab directly as in the embodiment. After the fixing member 3 including the locking member 12 having a bent portion from the side and the support member 13 adjusted to a predetermined length according to the size of the locking member 12 is installed in parallel to the bus duct 1, The refractory partition material 4 cut in accordance with the size of the opening 9 is filled in the entire opening 9, and if necessary, a plurality of fixing materials 5 are placed on top of the filled refractory partition material 4. Fix the mounting bracket 8 at the five ends and The contact surface or the gap between the Setsuzai 4 and bus duct 1, may be filled with a filler.

さらに、床スラブ面に直接固着材５を載置し、その上に開口部９より若干大きく切断した耐火仕切材４を、開口部９の上に被覆し、必要において、該耐火仕切材４の上部に複数の固着材５を載置して固着材５端部の取付け金具８を固定し、前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填しても良い。   Furthermore, the fixing material 5 is placed directly on the floor slab surface, and the fireproof partition material 4 cut slightly larger than the opening 9 is coated on the opening 9, and if necessary, the fireproof partitioning material 4 A plurality of fixing materials 5 may be placed on the upper portion to fix the mounting bracket 8 at the end of the fixing material 5, and the contact surface or gap between the fireproof partition material 4 and the bus duct 1 may be filled with a filler.

本発明において、開口部に耐火仕切り板を充填するに開口部を設けてバスダクトを貫通させる実施例として、実施例２、実施例５及び実施例６で開口部に耐火仕切り板を充填する壁バスダクト貫通部における防火構造を示しているが、本発明の場合、開口部に耐火仕切り板を壁スラブに沿って被覆する場合には、壁スラブ面に直接貫通枠２や固着材５を載置し、その上に開口部９より若干大きく切断した耐火仕切材４を、開口部９の上に被覆し、必要において、該耐火仕切材４の上部に複数の固着材５を載置して固着材５端部の取付け金具８を固定し、前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填しても上記実施例と同様の効果を得ることができる。   In the present invention, as an embodiment in which an opening is provided to fill the opening with the fireproof partition plate and the bus duct is penetrated, the wall bus duct in which the opening is filled with the fireproof partition plate in Example 2, Example 5 and Example 6. In the case of the present invention, when the fireproof partition plate is covered along the wall slab, the through frame 2 and the fixing material 5 are directly placed on the wall slab surface. The fireproof partitioning material 4 cut slightly larger than the opening 9 is coated on the opening 9, and a plurality of fixing materials 5 are placed on the fireproof partitioning material 4 as necessary. The same effect as in the above embodiment can be obtained by fixing the fitting 8 at the five ends and filling the contact surface or gap between the fireproof partition 4 and the bus duct 1 with a filler.

本発明における水止め機能を兼ねた床防止構造を示す断面図である。It is sectional drawing which shows the floor prevention structure which served as the water stop function in this invention. 図１における平面図である。It is a top view in FIG. 本発明における壁防止構造を示す断面図である。It is sectional drawing which shows the wall prevention structure in this invention. 図３における平面図である。It is a top view in FIG. 本発明で使用する固定具の斜視図である。It is a perspective view of the fixing tool used by this invention. 本発明における別な構造の壁防止構造を示す断面図であるIt is sectional drawing which shows the wall prevention structure of another structure in this invention. 図６における平面図である。It is a top view in FIG. 本発明における別な構造の壁防止構造を示す断面図であるIt is sectional drawing which shows the wall prevention structure of another structure in this invention. 図８における平面図である。It is a top view in FIG. 本発明における別な構造の壁防止構造を示す断面図であるIt is sectional drawing which shows the wall prevention structure of another structure in this invention. 図１０における平面図である。It is a top view in FIG. 本発明における別な構造の壁防止構造を示す断面図であるIt is sectional drawing which shows the wall prevention structure of another structure in this invention. 図１２における平面図である。It is a top view in FIG. 本発明で使用する固定具の斜視図である。It is a perspective view of the fixing tool used by this invention.

符号の説明Explanation of symbols

１・・・バスダクト
２・・・貫通枠
３・・・固定具
４・・・耐火仕切板
５・・・固着材
６・・・ビス
７・・・耐熱シール材
８・・・取付け金具
９・・・開口部
１０・・床スラブ
１１・・壁スラブ
１２・・係止部材
１３・・支持部
１４・・角型鋼管
１５・・耐火仕切板端材
１６・・延焼防止剤
１７・・係止部材
１８・・支持部 DESCRIPTION OF SYMBOLS 1 ... Bus duct 2 ... Through frame 3 ... Fixture 4 ... Fireproof partition plate 5 ... Adhesive material 6 ... Screw 7 ... Heat-resistant seal material 8 ... Mounting bracket 9 · · Opening 10 · · Floor slab 11 · · Wall slab 12 · · Locking member 13 · · Supporting portion 14 · · Square steel pipe 15 · · Fireproof partition plate end material 16 · · Fire spreader 17 · · Locking Member 18 ・ ・ Supporting part

Claims (10)

バスダクト１が貫通している床スラブ１２に設けられた開口部９に、貫通枠２又は固定具３を設定する第一工程と、
前記開口部９合わせて切断した耐火仕切材４を、開口部９全体に充填し、又は開口部９上に被覆する第二工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第三工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 A first step of setting the through frame 2 or the fixture 3 in the opening 9 provided in the floor slab 12 through which the bus duct 1 passes;
A second step of filling the entire opening 9 with the fireproof partition material 4 cut along the opening 9 or covering the opening 9;
3. A fire prevention structure construction method for a building bus duct penetrating portion, comprising a third step of filling a contact surface or a gap between the fireproof partition material 4 and the bus duct 1 with a filler. 前記バスダクト１は、床スラブ開口面の近傍箇所に予め延焼防止剤を塗布してあることを特徴とする請求項１記載の建物バスダクト貫通部の防火構造工法。   The fire prevention structure construction method for a building bus duct penetrating part according to claim 1, wherein the bus duct (1) is preliminarily coated with a fire spread prevention agent in the vicinity of the floor slab opening surface. バスダクト１が貫通している床スラブ１２に設けられた開口部９に、床平面上に貫通枠２の上部が位置するように設定する第一工程と、
該貫通枠２の端部から折り曲げ部を有する係止部材１２と係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１に並列に設置する第二工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第三工程と、
必要において、第三工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第四工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第五工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 A first step of setting the opening 9 provided in the floor slab 12 through which the bus duct 1 passes so that the upper part of the through frame 2 is positioned on the floor plane;
A fixing member 3 including a locking member 12 having a bent portion from an end of the through frame 2 and a support member 13 adjusted to a predetermined length according to the size of the locking member 12 is attached to the bus duct 1. A second step to be installed in parallel;
A third step of filling the entire opening 9 with the refractory partition material 4 cut in accordance with the size of the opening 9;
If necessary, a fourth step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the third step, and fixing the mounting bracket 8 at the end of the fixing material 5;
5. A fire prevention structure construction method for a building bus duct penetrating portion, comprising a fifth step of filling the contact surface or gap between the fireproof partition material 4 and the bus duct 1 with a filler. 前記固定具３は、折り曲げ部を有する係止部材１２として丸鋼棒或いは角鋼棒からなり、該係止部材１２に嵌合して長さ調整可能な支持部材１３として前記丸鋼棒の直径より大きい内径を有する中空管或いは平空管、又は前記角鋼棒より大きい内径を有する角空管であることを特徴とする請求項１又は請求項３記載の建物バスダクト貫通部の防火構造工法。   The fixing tool 3 is made of a round steel bar or a square steel bar as the locking member 12 having a bent portion, and has a diameter of the round steel bar as a support member 13 that can be fitted to the locking member 12 and can be adjusted in length. 4. A fire prevention structure construction method for a building bus duct penetrating portion according to claim 1 or 3, wherein the structure is a hollow tube or a flat hollow tube having a large inner diameter, or a square hollow tube having an inner diameter larger than that of the square steel bar. 前記充填材は、耐熱シール材７、耐火仕切板端材１５を単独或いは組み合わせて充填することを特徴とする請求項１又は請求項３記載の建物バスダクト貫通部の防火構造工法。   The fireproof structure construction method for a building bus duct penetrating part according to claim 1 or 3, wherein the filler is filled with a heat-resistant sealing material (7) and a fireproof partition plate end material (15) alone or in combination. バスダクト１が貫通している床スラブ１２に設けられた開口部９に、床平面より高い位置に貫通枠２の上部が位置するように設定する第一工程と、
該貫通枠２の端部から折り曲げ部を有する係止部材１２と係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１に並列に設置する第二工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第三工程と、
第三工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第四工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、耐火仕切板端材１４と耐熱シール材７を単独或いは組み合わせて充填する第五工程と、
前記充填材の充填箇所より上方のバスダクト１周面に延焼防止剤１６を塗布する第六工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 A first step of setting the opening 9 provided in the floor slab 12 through which the bus duct 1 passes so that the upper portion of the through frame 2 is positioned at a position higher than the floor plane;
A fixing member 3 including a locking member 12 having a bent portion from an end of the through frame 2 and a support member 13 adjusted to a predetermined length according to the size of the locking member 12 is attached to the bus duct 1. A second step to be installed in parallel;
A third step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A fourth step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the third step, and fixing the mounting bracket 8 at the end of the fixing material 5;
A fifth step of filling the contact surface or gap between the fireproof partition member 4 and the bus duct 1 with the fireproof partition plate end member 14 and the heat resistant sealant 7 alone or in combination;
A fire prevention structure construction method for a building bus duct penetrating portion, comprising: a sixth step of applying a fire spread inhibitor 16 to the circumferential surface of the bus duct 1 above the filling portion of the filler. バスダクト１が貫通している壁スラブに設けられた開口部９に、貫通枠２又は固定具３を設定する第一工程と、
前記開口部９合わせて切断した耐火仕切材４を、開口部９全体に充填し、又は開口部９上に被覆する第二工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第三工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 A first step of setting the through frame 2 or the fixture 3 in the opening 9 provided in the wall slab through which the bus duct 1 passes;
A second step of filling the entire opening 9 with the fireproof partition material 4 cut along the opening 9 or covering the opening 9;
3. A fire prevention structure construction method for a building bus duct penetrating portion, comprising a third step of filling a contact surface or a gap between the fireproof partition material 4 and the bus duct 1 with a filler. バスダクト１が貫通している壁スラブに設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を並列に設置する第一工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第二工程と、
第二工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８を固定する第三工程と、
前記耐火仕切材４とバスダクト１との接触面又は隙間に、充填材を充填する第四工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 The opening 9 provided in the wall slab through which the bus duct 1 passes is provided with a locking member 12 having a bent portion from the end of the opening 9 and a predetermined length according to the size of the locking member 12. A first step of installing the bus duct 1 in parallel with the fixture 3 comprising the support member 13 adjusted to
A second step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A third step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the second step, and fixing the mounting bracket 8 at the end of the fixing material 5;
A fire prevention structure construction method for a building bus duct penetrating portion, comprising a fourth step of filling a contact surface or a gap between the fireproof partition material 4 and the bus duct 1 with a filler. バスダクト１が貫通している壁スラブに設けられた開口部９に、該開口部９の端部から折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３を、前記バスダクト１を並列に設置する第一工程と、
前記開口部９の大きさに合わせて切断した耐火仕切材４を、開口部９全体に充填する第二工程と、
第二工程で充填した耐火仕切材４の上部に複数の固着材５を載置し、該固着材５端部の取付け金具８をビス６固定する第三工程と、
前記耐火仕切材４とバスダクト１との隙間に、耐火仕切板端材１４と耐熱シール材７を単独或いは組み合わせて充填する第四工程と、
前記耐熱シール材７充填箇所より上方のバスダクト１周面に延焼防止剤１６を塗布する第六工程と、からなることを特徴とする建物バスダクト貫通部の防火構造工法。 The opening 9 provided in the wall slab through which the bus duct 1 passes is provided with a locking member 12 having a bent portion from the end of the opening 9 and a predetermined length according to the size of the locking member 12. A first step of installing the bus duct 1 in parallel with the fixture 3 comprising the support member 13 adjusted to
A second step of filling the entire opening 9 with the refractory partition material 4 cut according to the size of the opening 9;
A third step of placing a plurality of fixing materials 5 on top of the refractory partitioning material 4 filled in the second step and fixing the mounting bracket 8 at the end of the fixing material 5 with screws 6;
A fourth step of filling the gap between the fireproof partition material 4 and the bus duct 1 with the fireproof partition plate end member 14 and the heat-resistant seal material 7 alone or in combination;
A fire prevention structure construction method for a building bus duct penetrating portion, comprising: a sixth step of applying a fire spread inhibitor 16 to the circumferential surface of the bus duct above the place where the heat-resistant sealing material 7 is filled. 構造物の床又は壁スラブの貫通孔内に貫通するバスダクトを、上記貫通孔の開口部とバスダクトとの間を耐火材で遮蔽するバスダクト貫通部の防火構造において、
バスダクト１が貫通している床又は壁スラブに設けられた開口部９に、必要において設けられる貫通枠２と、
該貫通枠２、又は開口部壁面の両端部を連結する、折り曲げ部を有する係止部材１２と該係止部材１２の大きさに合わせて所定の長さに調整される支持部材１３とからなる固定具３と、
前記開口部９の大きさに合わせて充填する耐火仕切材４と、
耐火仕切材４を固定する複数の固着材と、
前記耐火仕切材４とバスダクト１との接触面又は隙間を充填する耐熱シール材７又は耐火仕切板端材１５とからなる充填材とで構成されることを特徴とする建物バスダクト貫通部の防火構造。 In the fire prevention structure of the bus duct penetration part that shields the bus duct penetrating into the through hole of the floor or wall slab of the structure with a fireproof material between the opening of the through hole and the bus duct,
A through frame 2 provided where necessary in an opening 9 provided in a floor or wall slab through which the bus duct 1 passes;
The through frame 2 or the both ends of the wall surface of the opening is connected to a locking member 12 having a bent portion and a support member 13 adjusted to a predetermined length according to the size of the locking member 12. Fixture 3;
A refractory partition material 4 to be filled in accordance with the size of the opening 9, and
A plurality of fixing materials for fixing the fireproof partition material 4;
A fire prevention structure for a building bus duct penetrating portion characterized by comprising a heat-resistant sealing material 7 or a fire-resistant partition plate end member 15 filling a contact surface or a gap between the fire-resistant partition material 4 and the bus duct 1. .
JP2004293431A 2003-10-10 2004-10-06 Construction method for fire protection structure at bus duct penetrating part in building, and the fire protection structure at bus duct penetrating part in building Pending JP2005137194A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007181256A (en) * 2005-12-27 2007-07-12 Kyodo Ky Tec Corp Bus-duct supporting structure
JP2012147588A (en) * 2011-01-13 2012-08-02 Furukawa Techno Material Co Ltd Support metal fitting, refractory material arranging bottom plate support structure, and long object penetration portion fire prevention treatment method
CN103560462A (en) * 2013-11-13 2014-02-05 向荣集团有限公司 Shell of fire prevention bus duct
JP2016010184A (en) * 2014-06-23 2016-01-18 三菱電機株式会社 Fire spread prevention device of bus duct penetration part
CN110233455A (en) * 2019-06-25 2019-09-13 镇江西杰电气有限公司 A kind of intensity refractory busbar slot structure
CN115425603A (en) * 2022-09-22 2022-12-02 镇江苏海电力科技有限公司 Bus duct with high safety

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007181256A (en) * 2005-12-27 2007-07-12 Kyodo Ky Tec Corp Bus-duct supporting structure
JP4574538B2 (en) * 2005-12-27 2010-11-04 共同カイテック株式会社 Bus duct support structure
JP2012147588A (en) * 2011-01-13 2012-08-02 Furukawa Techno Material Co Ltd Support metal fitting, refractory material arranging bottom plate support structure, and long object penetration portion fire prevention treatment method
CN103560462A (en) * 2013-11-13 2014-02-05 向荣集团有限公司 Shell of fire prevention bus duct
JP2016010184A (en) * 2014-06-23 2016-01-18 三菱電機株式会社 Fire spread prevention device of bus duct penetration part
CN110233455A (en) * 2019-06-25 2019-09-13 镇江西杰电气有限公司 A kind of intensity refractory busbar slot structure
CN115425603A (en) * 2022-09-22 2022-12-02 镇江苏海电力科技有限公司 Bus duct with high safety

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