JP7399703B2 - Fireproof sheathing material, beam reinforcement metal fittings, fireproof sheathing retaining structure, and construction method of fireproof structure - Google Patents
Fireproof sheathing material, beam reinforcement metal fittings, fireproof sheathing retaining structure, and construction method of fireproof structure Download PDFInfo
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- JP7399703B2 JP7399703B2 JP2019228837A JP2019228837A JP7399703B2 JP 7399703 B2 JP7399703 B2 JP 7399703B2 JP 2019228837 A JP2019228837 A JP 2019228837A JP 2019228837 A JP2019228837 A JP 2019228837A JP 7399703 B2 JP7399703 B2 JP 7399703B2
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Description
本発明は、例えば、貫通孔を有する梁に配置される耐火被覆材、これを用いた梁補強金具、耐火被覆材保持構造及び耐火構造の構築方法に関するものである。 The present invention relates to, for example, a fireproof coating placed on a beam having a through hole, a beam reinforcing metal fitting using the same, a fireproof coating holding structure, and a method for constructing a fireproof structure.
建築構造物の鉄骨梁は、火災等により高温となると耐力が低下するため、これを避けるために、梁に、所定の厚みのロックウール等の耐火材を吹き付けて被覆する必要がある。 Steel beams of building structures lose their strength when exposed to high temperatures due to fire, etc. To avoid this, it is necessary to spray the beams with a fire-resistant material such as rock wool to a predetermined thickness to cover them.
このような耐火被覆がなされた鉄骨梁としては、例えば、フランジ部の一部に熱膨張性耐火材が配置され、他の部位が吹付耐火材で覆われた鉄骨梁が提案されている（特許文献１）。 As a steel beam coated with such a fireproof coating, for example, a steel beam has been proposed in which a part of the flange part is coated with a thermally expandable fireproofing material, and other parts are covered with a sprayed fireproofing material (patented). Reference 1).
一方、梁には、一般的には配管や配線等を通すために貫通孔が形成されることがある。貫通孔が形成された梁に耐火材を吹き付ける場合には、貫通孔の内周面も耐火材で覆う必要があるため、配設される配管等の外径に対して、耐火材の被覆厚み分だけ貫通孔のサイズを大きくしておく必要がある。 On the other hand, a through hole is generally formed in the beam to allow piping, wiring, etc. to pass therethrough. When spraying refractory material onto a beam with a through-hole, it is necessary to cover the inner circumferential surface of the through-hole with refractory material, so the thickness of the refractory material coating should be determined based on the outside diameter of the pipes, etc. to be installed. It is necessary to increase the size of the through hole accordingly.
図１１は、従来の耐火構造１００を示す断面図である。梁１０３のウェブ１０３ａには配管１０５が挿通される貫通孔１０９が形成される。なお、配管に代えて配線の場合もある。梁１０３のフランジ１０３ｂとウェブ１０３ａは、吹付耐火材１０７によって被覆される。吹付耐火材１０７は、耐火性能を得るために所定の厚みを確保する必要があるため、貫通孔１０９は、配管１０５の外径に対して、吹付耐火材１０７の厚み分だけ大きく設定される。このため、梁の強度低下のおそれがある。
FIG. 11 is a sectional view showing a conventional fireproof structure 100. A through hole 109 through which the pipe 105 is inserted is formed in the web 103a of the
これに対し、貫通孔を有する梁の耐火構造として、貫通孔の内周面に熱膨張性シートを配置する方法が提案されている（特許文献２）。 On the other hand, as a fireproof structure for a beam having a through hole, a method has been proposed in which a thermally expandable sheet is arranged on the inner peripheral surface of the through hole (Patent Document 2).
このように、吹付耐火材を用いて耐火構造を構築する際に、一部に他の耐火被覆材を予め配置することで、当該部位に吹付耐火材を設けた場合と比較して、耐火構造の厚みを薄くすることができる。このため、耐火材の厚みを薄くしたい場所には、吹付耐火材に代えて、他の耐火被覆材を用いる方法は有益である。 In this way, when constructing a fire-resistant structure using spray-on fireproofing materials, by placing other fire-resistant covering materials in advance in some areas, the fire-resistant structure becomes more can be made thinner. Therefore, in places where it is desired to reduce the thickness of the refractory material, it is advantageous to use other fire-resistant coating materials instead of spray-on refractory materials.
しかし、所望の場所に耐火被覆材を配置しても、吹付耐火材を吹き付ける際や、その準備の間に、脱落や位置ずれが生じるおそれがある。耐火被覆材の脱落や位置ずれが生じると、再度、耐火被覆材を所定の場所に配置し直す作業が必要となる。また、耐火材の吹付の際には、作業者が耐火被覆材を押さえながら作業を行う必要があるなど作業性が悪い。 However, even if the fireproofing material is placed in the desired location, there is a risk that it may fall off or become misaligned during the spraying or preparation of the sprayed fireproofing material. If the fireproof coating material falls off or becomes misaligned, it becomes necessary to reposition the fireproof coating material at a predetermined location. Furthermore, when spraying the fireproofing material, the work efficiency is poor, as the operator must hold down the fireproofing material while performing the work.
本発明は、このような問題に鑑みてなされたもので、例えば梁の貫通孔などに耐火被覆材を配置する際に、確実に耐火被覆材を保持し、良好な作業性を得ることが可能な耐火被覆材及びこれを用いた梁補強金具等を提供することを目的とする。 The present invention was made in view of these problems, and it is possible to securely hold the fireproof coating and obtain good workability when placing the fireproof coating in, for example, a through hole of a beam. The purpose of this invention is to provide a fireproof covering material and beam reinforcing metal fittings using the same.
前述した目的を達成するために、第１の発明は、可撓性を有する耐火材と、前記耐火材に設けられた貼着材と、を具備し、前記貼着材によって対象部へ貼り付け可能であり、前記貼着材は磁石であり、前記磁石は、前記耐火材の長手方向に沿って所定の間隔で配置されることを特徴とする耐火被覆材である。
第２の発明は、可撓性を有する耐火材と、前記耐火材に設けられた貼着材と、を具備し、前記貼着材によって対象部へ貼り付け可能であり、前記貼着材は吸盤であり、前記吸盤は、前記耐火材の長手方向に沿って所定の間隔で配置されることを特徴とする耐火被覆材である。
第３の発明は、可撓性を有する耐火材と、前記耐火材に設けられた貼着材と、を具備し、前記貼着材によって対象部へ貼り付け可能であり、前記貼着材は両面テープ又は接着剤であり、前記両面テープ又は接着剤は、前記耐火材の長手方向に沿って配置され、前記貼着材は、前記耐火材の長手方向に垂直な幅方向の両側に張り出した位置に配置されることを特徴とする耐火被覆材である。
In order to achieve the above-mentioned object, a first invention includes a flexible fireproof material and an adhesive material provided on the fireproof material, and the adhesive material is attached to a target part by the adhesive material. The adhesive material may be a magnet, and the magnets may be arranged at predetermined intervals along the longitudinal direction of the refractory material .
A second invention includes a flexible refractory material and an adhesive provided on the refractory material, and can be attached to a target part with the adhesive, and the adhesive material is The fireproof covering material is a suction cup, and the suction cups are arranged at predetermined intervals along the longitudinal direction of the fireproof material.
A third invention includes a flexible fireproof material and an adhesive provided on the fireproof material, the adhesive can be attached to a target part, and the adhesive is It is a double-sided tape or adhesive, and the double-sided tape or adhesive is arranged along the longitudinal direction of the refractory material, and the adhesive material extends on both sides in the width direction perpendicular to the longitudinal direction of the refractory material. A fire-resistant covering material characterized in that it is placed at a location.
前記対象部が、梁に形成された貫通孔であり、前記貼着材は、前記耐火材の長手方向に沿って配置され、前記耐火材を前記貫通孔の内面又は梁補強金具の内面に沿って貼り付けることが可能であることが望ましい。 The target part is a through hole formed in a beam, and the adhesive material is arranged along the longitudinal direction of the refractory material, and the adhesive material is arranged along the longitudinal direction of the refractory material, and the adhesive material is attached to the refractory material along the inner surface of the through hole or the inner surface of the beam reinforcing metal fitting. It is desirable that it be possible to paste the
前記耐火材は、芯材と、前記芯材を覆う被覆材とを有することが望ましい。 It is desirable that the fireproof material has a core material and a coating material that covers the core material.
第１－３の発明によれば、耐火被覆材が、可撓性を有する耐火材に貼着材が配置されているため、耐火被覆材を容易に耐火対象部へ貼り付けることができる。このため、耐火被覆材の対象部からの脱落やずれを抑制することができる。このため、例えば、耐火被覆材を配置した部位以外に耐火材を吹き付ける場合でも、耐火被覆材を確実に所定の位置に保持することができる。 According to the 1-3 aspect of the invention, since the fireproof coating material has the adhesive material disposed on the flexible fireproof material, the fireproof coating material can be easily attached to the fireproof target part. Therefore, it is possible to suppress the fireproof covering material from falling off or shifting from the target area. For this reason, for example, even when spraying the fireproof material to a region other than the area where the fireproof covering material is placed, the fireproof covering material can be reliably held in a predetermined position.
特に、梁に形成された貫通孔の内周面に耐火被覆材を配置する場合に、より大きな効果を得ることができる。 In particular, a greater effect can be obtained when the fireproof coating is placed on the inner circumferential surface of the through hole formed in the beam.
また、貼着材が磁石や吸盤であれば、容易に耐火被覆材を鉄骨梁等へ貼り付けることができる。 Further, if the adhesive material is a magnet or a suction cup, the fireproof coating material can be easily attached to a steel beam or the like.
また、貼着材が両面テープ又は接着剤であれば、構造が簡易であり低コストの耐火被覆材を得ることができる。 Moreover, if the adhesive material is double-sided tape or adhesive, the structure is simple and a low-cost fireproof covering material can be obtained.
この際、耐火材の長手方向に垂直な幅方向の両側に張り出した位置に、両面テープ接着剤磁石又は吸盤を配置することで、容易に耐火被覆材を鉄骨梁の側面等へ固定することができるため、作業が容易である。 At this time, by placing double-sided tape adhesive magnets or suction cups on both sides of the fireproof material in the width direction perpendicular to the longitudinal direction, the fireproof covering material can be easily fixed to the side surfaces of the steel beams, etc. This makes the work easier.
また、耐火材が、芯材と、芯材を覆う被覆材とを有すれば、取り扱い時等に耐火材が破損することを抑制することができる。また、被覆材によって、例えば耐火ウール材や熱膨張性部材などの芯材の形状保持性を高めることができる。 Moreover, if the refractory material has a core material and a coating material that covers the core material, it is possible to suppress damage to the refractory material during handling. Furthermore, the covering material can improve the shape retention of the core material, such as a fire-resistant wool material or a thermally expandable material.
第４の発明は、第１－３の発明にかかる耐火被覆材を有し、ウェブに貫通孔が形成された梁を補強するための梁補強金具であって、前記貫通孔に配置される本体部と、前記本体部の内周面に配置される前記耐火被覆材と、を具備することを特徴とする梁補強金具である。 A fourth invention is a beam reinforcing metal fitting for reinforcing a beam having a web having a through hole formed therein, which has the fireproof covering material according to the first to third inventions, wherein the main body is disposed in the through hole. The beam reinforcing metal fitting is characterized in that the beam reinforcing metal fitting includes a section and the fireproof covering material disposed on the inner circumferential surface of the main body section.
第４の発明によれば、梁補強金具の内周面に、予め耐火被覆材が貼り付けられているため、梁補強金具を梁へ溶接し、吹付耐火材を梁へ吹き付けるだけで、耐火構造を得ることができる。 According to the fourth invention, since the fireproof covering material is pasted on the inner peripheral surface of the beam reinforcing metal fittings in advance, the fireproof structure can be achieved by simply welding the beam reinforcing metal fittings to the beams and spraying the sprayed fireproofing material onto the beams. can be obtained.
第５の発明は、第１－３の発明にかかる耐火被覆材を用いた耐火被覆保持材構造であって、梁に形成された貫通孔又は前記貫通孔に固定された梁補強金具の内面に、前記耐火被覆材が配置され、前記耐火被覆材の両側に張り出した部位が折り曲げられ、前記貫通孔の外周部又は前記梁補強金具に張り付けられることを特徴とする耐火被覆材保持構造である。 A fifth invention is a fireproof coating retaining material structure using the fireproof coating material according to the first to third inventions, wherein the fireproof coating retainer structure uses the fireproof coating material according to the first to third inventions, and the structure is such that a through hole formed in a beam or an inner surface of a beam reinforcing metal fitting fixed to the through hole , the fireproof covering material holding structure is characterized in that the fireproof covering material is arranged, the parts projecting on both sides of the fireproof covering material are bent and attached to the outer periphery of the through hole or the beam reinforcing metal fittings.
第６の発明は、第１－３の発明にかかる耐火被覆材を用いた耐火被覆構造の構築方法であって、梁に形成された貫通孔の内面、又は、梁補強金具の内面を覆うように前記耐火被覆材を配置する工程と、前記梁の外周面に吹付耐火材を吹き付ける工程と、を具備することを特徴とする耐火構造の構築方法である。 A sixth invention is a method for constructing a fire-resistant covering structure using the fire-resistant covering material according to the first to third inventions, the method comprising: covering the inner surface of a through hole formed in a beam or the inner surface of a beam reinforcing metal fitting; A method for constructing a fire-resistant structure , comprising the steps of: arranging the fire-resistant coating on the beam; and spraying a spray-on fire-resistant material onto the outer peripheral surface of the beam.
第５、第６の発明によれば、容易に耐火被覆時保持構造及び耐火構造を得ることができる。 According to the fifth and sixth inventions, it is possible to easily obtain a fireproof coating holding structure and a fireproof structure.
本発明によれば、例えば梁の貫通孔などに耐火被覆材を配置する際に、確実に耐火被覆材を保持し、良好な作業性を得ることが可能な耐火被覆材及びこれを用いた梁補強金具を提供することができる。 According to the present invention, a fire-resistant coating material that can reliably hold the fire-resistant coating material and obtain good workability when placing the fire-resistant coating material in, for example, a through hole of a beam, and a beam using the same are provided. Reinforcement fittings can be provided.
（第１の実施形態）
以下、本発明の実施の形態について説明する。図１は、第１の実施形態にかかる耐火被覆材保持構造１０を示す正面図である。耐火被覆材保持構造１０は、梁３に形成された貫通孔９へ、耐火被覆材５が保持されたものである。なお、以下の説明では、耐火被覆材保持構造１０における、耐火被覆材５の配置される対象部が梁３に形成された貫通孔９である例を示すが、他の対象部へ耐火被覆材５を配置して保持することも可能である。
(First embodiment)
Embodiments of the present invention will be described below. FIG. 1 is a front view showing a fireproof covering material holding structure 10 according to a first embodiment. The fireproof covering material holding structure 10 has a fireproof covering material 5 held in a through hole 9 formed in a beam 3. In addition, in the following description, an example will be shown in which the target part in the fireproof sheathing material holding structure 10 where the fireproof sheathing material 5 is arranged is the through hole 9 formed in the beam 3. It is also possible to arrange and hold 5.
梁３は、一対のフランジ３ｂがウェブ３ａによって連結された、いわゆるＨ形鋼で構成される。ウェブ３ａには、配管等が挿通される貫通孔９が形成される。貫通孔９の内周面には、貫通孔９の内面を覆うように、耐火被覆材５が略全周に亘って配置される。
The beam 3 is composed of a so-called H-beam steel in which a pair of
図２（ａ）は、耐火被覆材５の平面図であり、図２（ｂ）は、図２（ａ）のＢ－Ｂ線断面図である。耐火被覆材５は、耐火材６ｃと、耐火材６ｃに設けられる貼着材６ｄとを有する。耐火材６ｃは、可撓性を有する難燃材又は不燃材によって構成される。本実施形態では、貼着材６ｄは両面テープであり、貼着材６ｄは、耐火材６ｃの長手方向に沿って配置される。貼着材６ｄによって耐火材６ｃを、対象部へ貼り付けることが可能である。なお、両面テープに代えて、接着剤を塗布してもよいが、以下の説明では、両面テープを用いた例について説明する。 FIG. 2(a) is a plan view of the fireproof covering material 5, and FIG. 2(b) is a sectional view taken along the line BB in FIG. 2(a). The fireproof covering material 5 includes a fireproof material 6c and an adhesive material 6d provided on the fireproof material 6c. The fireproof material 6c is made of a flexible flame retardant or noncombustible material. In this embodiment, the adhesive material 6d is a double-sided tape, and the adhesive material 6d is arranged along the longitudinal direction of the fireproof material 6c. The refractory material 6c can be attached to the target part using the adhesive material 6d. Note that an adhesive may be applied instead of the double-sided tape, but in the following description, an example using the double-sided tape will be described.
図２（ｂ）に示すように、耐火材６ｃは、芯材６ａと、芯材６ａを覆う被覆材６ｂとを有する。芯材６ａは、ガラスウールなどの耐火ウール材や、熱膨張性部材などを適用可能である。被覆材６ｂは、ある程度の強度と耐火性を有するシート状の部材であれば適用可能であるが、例えば、アルミニウム被覆ガラスクロスシートなどを適用することで、耐火被覆材５のある程度の形状保持性を得ることができる。しかしながら、本態様に限らず、貫通孔等の内面を覆うように、略全周に亘って配置できる耐火被覆材であればいかなる態様でも構わない。例えば、耐火材６ｃが、芯材６ａのみで構成されてもよい。 As shown in FIG. 2(b), the refractory material 6c includes a core material 6a and a covering material 6b that covers the core material 6a. The core material 6a can be made of a fire-resistant wool material such as glass wool, a thermally expandable material, or the like. The covering material 6b can be applied as long as it is a sheet-like member that has a certain degree of strength and fire resistance, but for example, by applying an aluminum-coated glass cloth sheet, etc., the fire-resistant covering material 5 can have a certain degree of shape retention. can be obtained. However, the invention is not limited to this embodiment, and any embodiment may be used as long as the fireproof covering material can be disposed over substantially the entire circumference so as to cover the inner surface of the through hole or the like. For example, the refractory material 6c may be comprised only of the core material 6a.
図３（ａ）は、耐火被覆材保持構造１０の断面図であり、図１のＡ－Ａ線断面図である。貼着材６ｄが外周側となるように、耐火被覆材５を丸めて貫通孔９の内部に配置し、貼着材６ｄによって、貫通孔９の内周面に貼り付けることで、耐火材６ｃを貫通孔９の内面に沿って貼り付けることが可能である。この際、耐火被覆材５（耐火材６ｃ）の長さを、貫通孔９の内周長と略同一とすることで、貫通孔９の内周面の略全周に亘って耐火被覆材５を配置することができる。 FIG. 3(a) is a cross-sectional view of the fireproof covering material holding structure 10, and is a cross-sectional view taken along the line AA in FIG. The fireproof coating material 5 is rolled up and placed inside the through hole 9 so that the adhesive material 6d is on the outer peripheral side, and the fireproof material 6c is pasted on the inner peripheral surface of the through hole 9 using the adhesive material 6d. can be pasted along the inner surface of the through hole 9. At this time, by making the length of the fireproof sheathing material 5 (fireproof material 6c) substantially the same as the inner peripheral length of the through hole 9, the fireproof sheathing material 5 is made to be approximately the same as the inner peripheral length of the through hole 9. can be placed.
この状態では、耐火被覆材５の貼着材６ｄは、貫通孔９の内面に貼り付けられて、耐火被覆材５が貫通孔９に保持されるため、その後の耐火材の吹付作業や、その準備の際に、貫通孔９からの耐火被覆材５の脱落やずれを抑制することができる。 In this state, the adhesive material 6d of the fireproof covering material 5 is pasted on the inner surface of the through hole 9, and the fireproof covering material 5 is held in the through hole 9, so that subsequent spraying work of the fireproof material and its During preparation, it is possible to prevent the fireproof covering material 5 from falling off or shifting from the through hole 9.
次に、耐火被覆材５を用いた耐火被覆構造の構築方法を説明する。まず、梁３に形成された貫通孔９の内周面に耐火被覆材５を配置する。この際、耐火被覆材５の貼着材６ｄを貫通孔９の内面に貼り付ける。次に、梁３の外周面に耐火材を吹き付ける。 Next, a method of constructing a fireproof covering structure using the fireproof covering material 5 will be explained. First, the fireproof covering material 5 is placed on the inner peripheral surface of the through hole 9 formed in the beam 3. At this time, the adhesive material 6d of the fireproof covering material 5 is pasted on the inner surface of the through hole 9. Next, a fireproof material is sprayed onto the outer peripheral surface of the beam 3.
図３（ｂ）は、梁３の外周に吹付耐火材７を吹き付けた耐火構造１を示す断面図である。耐火構造１では、耐火被覆材５が配置されるため、貫通孔９の内周面には吹付耐火材７は不要である。また、吹付耐火材７と比較して、耐火被覆材５（芯材６ａ）の耐火性能を高めることができるため、貫通孔９の内周面に吹付耐火材７を形成した場合（点線）と比較して、耐火構造の厚みを薄くすることができる。このため、貫通孔９に挿通される配管等の外径に対して、貫通孔９のサイズを小さくすることができる。
FIG. 3(b) is a sectional view showing a
以上、第１の実施の形態によれば、耐火材６ｃに貼着材６ｄが貼り付けられているため、例えば、梁３の貫通孔９の内面など、耐火被覆材５の設置対象に容易に貼り付けて固定することができる。このため、耐火被覆材保持構造１０は、作業時における耐火被覆材５の脱落や、ずれを抑制することができる。このため、その後の吹付耐火材７の施工が容易であり、容易に耐火構造１を得ることができる。
As described above, according to the first embodiment, since the adhesive material 6d is attached to the fireproof material 6c, the fireproof covering material 5 can be easily installed, for example, on the inner surface of the through hole 9 of the beam 3. It can be pasted and fixed. Therefore, the fireproof covering material holding structure 10 can suppress the falling off or displacement of the fireproof covering material 5 during work. Therefore, subsequent construction of the sprayed refractory material 7 is easy, and the
また、耐火材６ｃの芯材６ａが被覆材６ｂで覆われているため、例えば芯材６ａが耐火ウール材などの場合に、取り扱い時におけるウール材の破損や粉塵などの発生を抑制することができ、また、細かな繊維屑により作業者に生じる痒みを抑制することができる。このため、取り扱い性が良好である。また、被覆材６ｂが金属被覆ガラスクロスなどであれば、多少の形状保持性を有するため、耐火被覆材５を変形させた際に、その形態が保持される。このため、例えば貫通孔９の内面に丸めて配置した場合にも、耐火被覆材５自体が丸めた形状を維持し、より確実に位置ずれや脱落を抑制することができる。 In addition, since the core material 6a of the fireproof material 6c is covered with the covering material 6b, for example, when the core material 6a is made of fireproof wool material, damage to the wool material and generation of dust during handling can be suppressed. In addition, it is possible to suppress itching caused to the worker by fine fiber debris. Therefore, it is easy to handle. Further, if the covering material 6b is metal-coated glass cloth or the like, it has some shape retention property, so that when the fireproof covering material 5 is deformed, its shape is maintained. Therefore, even when the fireproof covering material 5 is arranged in a rounded manner on the inner surface of the through hole 9, for example, the fireproof covering material 5 itself maintains its rounded shape, and displacement and falling off can be more reliably suppressed.
（第２の実施形態）
次に、第２の実施形態について説明する。図４は、梁補強金具１１を示す斜視図であり、図５は、梁補強金具１１の部分断面図である。なお、以下の説明において、耐火被覆材保持構造１０及び耐火構造１と同様の構成には、図１～図３と同一の符号を付して、重複する説明を省略する。
(Second embodiment)
Next, a second embodiment will be described. FIG. 4 is a perspective view showing the beam reinforcing metal fitting 11, and FIG. 5 is a partial cross-sectional view of the beam reinforcing metal fitting 11. In the following description, the same components as the fireproof covering material holding structure 10 and the
本実施形態では、ウェブ３ａに貫通孔９が形成された梁３を補強するための梁補強金具１１が用いられる。前述したように、梁３に貫通孔９を形成すると、貫通孔９により、梁３の曲げ耐力が低下する。梁補強金具１１は、この梁３の曲げ耐力低下を防ぐための部材である。 In this embodiment, a beam reinforcing metal fitting 11 is used for reinforcing the beam 3 in which the through hole 9 is formed in the web 3a. As described above, when the through hole 9 is formed in the beam 3, the bending strength of the beam 3 is reduced due to the through hole 9. The beam reinforcing metal fitting 11 is a member for preventing the bending strength of the beam 3 from decreasing.
梁補強金具１１は、ウェブ３ａに固定される本体部１２と、本体部１２の内周面に配置される耐火被覆材５とを有する。本体部１２は、例えば鋼材やステンレス鋼などの金属製の部材である。本体部１２は、全体としてリング状の部材であり、配管等が貫通する配管孔を有している。本体部１２の内周面には、本体部１２の内面を覆うように、略全周に亘って耐火被覆材５が配置される。この際、貼着材６ｄは、本体部１２の内周面に貼り付けられる。 The beam reinforcing metal fitting 11 has a main body 12 fixed to the web 3a and a fireproof coating 5 disposed on the inner circumferential surface of the main body 12. The main body portion 12 is, for example, a member made of metal such as steel or stainless steel. The main body portion 12 is a ring-shaped member as a whole, and has a piping hole through which piping and the like pass. A fireproof covering material 5 is disposed on the inner circumferential surface of the main body part 12 over substantially the entire circumference so as to cover the inner surface of the main body part 12 . At this time, the adhesive material 6d is attached to the inner circumferential surface of the main body portion 12.
図６（ａ）は、耐火被覆材保持構造１０ａを示す図である。耐火被覆材保持構造１０ａは、耐火被覆材保持構造１０と略同様であるが、貫通孔９に梁補強金具１１が溶接によって固定される点で異なる。 FIG. 6(a) is a diagram showing the fireproof covering material holding structure 10a. The fireproof covering material holding structure 10a is substantially the same as the fireproof covering material holding structure 10, but differs in that a beam reinforcing metal fitting 11 is fixed to the through hole 9 by welding.
梁補強金具１１を用いる場合には、まず、梁３に形成された貫通孔９の内部又は外部に、梁補強金具１１を配置して固定する。なお、梁補強金具１１には、予め耐火被覆材５を貼り付けておいてもよく、又は、梁補強金具１１を固定した後に、梁補強金具１１の内面に耐火被覆材５を貼り付けてもよい。この状態から、梁３及び梁補強金具１１の外周面に吹付耐火材７を施工することで、図６（ｂ）に示す耐火構造１ａを得ることができる。なお、梁補強金具１１を用いる場合には、梁補強金具１１の本体部１２自体も耐火被覆する必要があるが、本実施形態では、本体部１２の内周面には、耐火被覆材５が配置されている。このため、耐火構造１ａも耐火構造１と同様に、梁補強金具１１の内周面には吹付耐火材７は不要である。
When using the beam reinforcing metal fittings 11, the beam reinforcing metal fittings 11 are first placed and fixed inside or outside of the through holes 9 formed in the beams 3. Note that the fireproof covering material 5 may be attached to the beam reinforcing fittings 11 in advance, or the fireproof coating material 5 may be attached to the inner surface of the beam reinforcing fittings 11 after the beam reinforcing fittings 11 are fixed. good. From this state, the sprayed fireproofing material 7 is applied to the outer peripheral surfaces of the beam 3 and the beam reinforcing metal fittings 11, thereby obtaining the fireproof structure 1a shown in FIG. 6(b). Note that when using the beam reinforcing metal fitting 11, the main body 12 of the beam reinforcing metal fitting 11 itself also needs to be coated with fireproof coating, but in this embodiment, the inner peripheral surface of the main body 12 is coated with a fireproof coating material 5. It is located. Therefore, similarly to the
第２の実施形態によれば、第１の実施形態と同様の効果を得ることができる。このように、梁補強金具１１を用いることで、梁３を補強することができる。この際、耐火被覆材５が設けられた梁補強金具１１を用いることで、容易に耐火構造１ａを得ることができる。 According to the second embodiment, effects similar to those of the first embodiment can be obtained. In this way, by using the beam reinforcing metal fittings 11, the beam 3 can be reinforced. At this time, by using the beam reinforcing metal fittings 11 provided with the fireproof coating 5, the fireproof structure 1a can be easily obtained.
（第３の実施形態）
次に、第３の実施形態について説明する。図７は、耐火構造１ｂを示す断面図である。耐火構造１ｂは、耐火構造１ａとほぼ同様の構成であるが、耐火被覆材５ａが用いられる点で異なる。なお、以下の実施形態では、梁補強金具１１が用いられる例について説明するが、梁補強金具１１を用いずに、耐火被覆材を貫通孔９の内面（ウェブ３ａ）に直接固定してもよい。また、以下に示すいずれの耐火構造も、耐火被覆材を貫通孔９の内面側に保持した耐火被覆材保持構造（図示省略）に対して、吹付耐火材を施工したものである。
(Third embodiment)
Next, a third embodiment will be described. FIG. 7 is a sectional view showing the fireproof structure 1b. The fireproof structure 1b has almost the same configuration as the fireproof structure 1a, but differs in that a fireproof coating 5a is used. In addition, in the following embodiment, an example in which the beam reinforcing metal fitting 11 is used will be described, but the fireproof coating material may be directly fixed to the inner surface (web 3a) of the through hole 9 without using the beam reinforcing metal fitting 11. . In addition, all of the fireproof structures shown below are constructed by applying a sprayed fireproof material to a fireproof covering material holding structure (not shown) that holds a fireproof covering material on the inner surface side of the through hole 9.
図８は、耐火被覆材５ａを示す平面図である。耐火被覆材５ａは、耐火被覆材５とは異なり、貼着材６ｄに代えて、貼着材６ｅが用いられる。貼着材６ｅは吸盤であり、吸盤が、耐火材６ｃの長手方向に沿って所定の間隔で配置される。 FIG. 8 is a plan view showing the fireproof covering material 5a. The fireproof coating material 5a differs from the fireproof coating material 5 in that an adhesive material 6e is used instead of the adhesive material 6d. The adhesive material 6e is a suction cup, and the suction cups are arranged at predetermined intervals along the longitudinal direction of the fireproof material 6c.
図７に示すように、貼着材６ｅを外側に向けて耐火被覆材５ａを丸めて、梁補強金具１１の本体部１２の内周面に配置し、吸盤によって本体部１２の内面に耐火被覆材５ａを固定することで、耐火被覆材５ａを梁３へ固定することができる。 As shown in FIG. 7, the fireproof coating material 5a is rolled up with the adhesive material 6e facing outward, and placed on the inner peripheral surface of the main body part 12 of the beam reinforcing metal fitting 11, and the fireproof coating material is coated on the inner surface of the main body part 12 with a suction cup. By fixing the material 5a, the fireproof covering material 5a can be fixed to the beam 3.
第３の実施形態よれば、第２の実施形態と同様の効果を得ることができる。このように、貼着手段としては、両面テープではなく吸盤等であってもよい。 According to the third embodiment, the same effects as the second embodiment can be obtained. In this way, the attachment means may be a suction cup or the like instead of double-sided tape.
（第４の実施形態）
次に、第４の実施形態について説明する。図９は、耐火構造１ｃを示す断面図である。耐火構造１ｃは、耐火構造１ａとほぼ同様の構成であるが、耐火被覆材５ｂが用いられる点で異なる。
(Fourth embodiment)
Next, a fourth embodiment will be described. FIG. 9 is a sectional view showing the fireproof structure 1c. The fireproof structure 1c has substantially the same configuration as the fireproof structure 1a, but differs in that a fireproof coating 5b is used.
図１０は、耐火被覆材５ｂを示す平面図である。耐火被覆材５ｂは、耐火被覆材５とは異なり、貼着材６ｄに代えて、貼着材６ｇが用いられる。耐火被覆材５ｂは、耐火材６ｃの長手方向に垂直な幅方向の両側に張り出すように、長手方向に対して所定の間隔で複数の腕部６ｆが配置される。腕部６ｆは、例えば可撓性を有するガラスクロス等の部材で構成される。 FIG. 10 is a plan view showing the fireproof covering material 5b. The fireproof coating material 5b differs from the fireproof coating material 5 in that an adhesive material 6g is used instead of the adhesive material 6d. The fireproof covering material 5b has a plurality of arm portions 6f arranged at predetermined intervals in the longitudinal direction so as to protrude from both sides in the width direction perpendicular to the longitudinal direction of the fireproof material 6c. The arm portion 6f is made of, for example, a flexible member such as glass cloth.
貼着材６ｇは、それぞれの腕部６ｆの先端部近傍に配置されるとともに、耐火材の長手方向に垂直な幅方向の両側に張り出した位置に配置される。すなわち、貼着材６ｇは、耐火材６ｃの長手方向に沿って所定の間隔で配置される。本実施形態では、貼着材６ｇは磁石である例を示すが、前述した吸盤や両面テープ等であってもよい。 The adhesive material 6g is disposed near the tip of each arm 6f, and is disposed at a position projecting on both sides in the width direction perpendicular to the longitudinal direction of the refractory material. That is, the adhesive materials 6g are arranged at predetermined intervals along the longitudinal direction of the fireproof material 6c. In this embodiment, an example is shown in which the adhesive material 6g is a magnet, but it may also be the aforementioned suction cup, double-sided tape, or the like.
図９に示すように、耐火被覆材５ｂを丸めて、梁補強金具１１の本体部１２の内周面に配置するとともに、各部における幅方向に対向する一対の腕部６ｆを外側に折り曲げるようにして、腕部６ｆでウェブ３ａ又は梁補強金具１１の本体部１２を挟み込む。この際、腕部６ｆのウェブ３ａ又は梁補強金具１１の本体部１２との対向面には、貼着材６ｇが配置されているため、耐火被覆材５ｂの両側に張り出した部位を折り曲げることで、貫通孔９の外周部又は梁補強金具１１に張り出し部を貼着材６ｇによって張り付け、耐火被覆材５ａを固定することができる。 As shown in FIG. 9, the fireproof covering material 5b is rolled up and placed on the inner circumferential surface of the main body part 12 of the beam reinforcing metal fitting 11, and a pair of arms 6f facing each other in the width direction are bent outward. Then, the web 3a or the main body part 12 of the beam reinforcing metal fitting 11 is sandwiched between the arm parts 6f. At this time, since the adhesive material 6g is placed on the web 3a of the arm portion 6f or the surface facing the main body portion 12 of the beam reinforcing metal fitting 11, it is possible to The fireproof covering material 5a can be fixed by pasting the overhanging portion to the outer periphery of the through hole 9 or the beam reinforcing metal fitting 11 with adhesive 6g.
第４の実施形態よれば、第２の実施形態等と同様の効果を得ることができる。このように、貼着手段を耐火材６ｃの幅方向に突出させた腕部６ｆに配置し、腕部６ｆをウェブ３ａ（本体部１２）側へ折り曲げることで、貫通孔９や本体部１２の内面に十分なスペースがなくても、確実に耐火被覆材５ｂを貫通孔９の内面側に固定することができる。 According to the fourth embodiment, effects similar to those of the second embodiment and the like can be obtained. In this way, by disposing the sticking means on the arm portion 6f that protrudes in the width direction of the refractory material 6c, and bending the arm portion 6f toward the web 3a (main body portion 12), the through hole 9 and the main body portion 12 can be fixed. Even if there is not enough space on the inner surface, the fireproof covering material 5b can be reliably fixed to the inner surface of the through hole 9.
以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the technical idea stated in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs.
例えば、上述した各構成は互いに組み合わせることができることは言うまでもない。 For example, it goes without saying that the configurations described above can be combined with each other.
１、１ａ、１ｂ、１ｃ………耐火構造
３………梁
３ａ………ウェブ
３ｂ………フランジ
５、５ａ、５ｂ………耐火被覆材
６ａ………芯材
６ｂ………被覆材
６ｃ………耐火材
６ｄ、６ｅ、６ｇ………貼着材
６ｆ………腕部
７………吹付耐火材
９………貫通孔
１０、１０ａ………耐火被覆材保持構造
１１………梁補強金具
１２………本体部
１００………耐火構造
１０３………梁
１０３ａ………ウェブ
１０３ｂ………フランジ
１０５………配管
１０７………吹付耐火材
１０９………貫通孔
1, 1a, 1b, 1c... Fireproof structure 3... Beam 3a...
Claims (8)
前記耐火材に設けられた貼着材と、を具備し、
前記貼着材によって対象部へ貼り付け可能であり、
前記貼着材は磁石であり、前記磁石は、前記耐火材の長手方向に沿って所定の間隔で配置されることを特徴とする耐火被覆材。 A flexible fireproof material;
An adhesive provided on the fireproof material,
The adhesive material can be applied to the target area ,
The fireproof covering material is characterized in that the adhesive material is a magnet, and the magnets are arranged at predetermined intervals along the longitudinal direction of the fireproof material .
前記耐火材に設けられた貼着材と、を具備し、
前記貼着材によって対象部へ貼り付け可能であり、
前記貼着材は吸盤であり、前記吸盤は、前記耐火材の長手方向に沿って所定の間隔で配置されることを特徴とする耐火被覆材。 A flexible fireproof material;
An adhesive provided on the fireproof material,
The adhesive material can be applied to the target area ,
The fireproof covering material is characterized in that the adhesive material is a suction cup, and the suction cups are arranged at predetermined intervals along the longitudinal direction of the fireproof material .
前記耐火材に設けられた貼着材と、を具備し、
前記貼着材によって対象部へ貼り付け可能であり、
前記貼着材は両面テープ又は接着剤であり、前記両面テープ又は接着剤は、前記耐火材の長手方向に沿って配置され、
前記貼着材は、前記耐火材の長手方向に垂直な幅方向の両側に張り出した位置に配置されることを特徴とする耐火被覆材。 A flexible fireproof material;
An adhesive provided on the fireproof material,
The adhesive material can be applied to the target area ,
The adhesive material is a double-sided tape or adhesive, and the double-sided tape or adhesive is arranged along the longitudinal direction of the fireproof material,
The fireproof covering material is characterized in that the adhesive material is disposed at a position extending from both sides in a width direction perpendicular to the longitudinal direction of the fireproof material .
前記貼着材は、前記耐火材の長手方向に沿って配置され、
前記耐火材を前記貫通孔の内面又は梁補強金具の内面に沿って貼り付けることが可能であることを特徴とする請求項１から請求項３のいずれかに記載の耐火被覆材。 The target portion is a through hole formed in a beam,
The adhesive material is arranged along the longitudinal direction of the fireproof material,
The fireproof coating material according to any one of claims 1 to 3, wherein the fireproof material can be attached along the inner surface of the through hole or the inner surface of the beam reinforcing metal fitting.
前記貫通孔に配置される本体部と、
前記本体部の内周面に配置される前記耐火被覆材と、
を具備することを特徴とする梁補強金具。 A beam reinforcing metal fitting for reinforcing a beam having a fireproof covering material according to any one of claims 1 to 5 and having a through hole formed in the web,
a main body disposed in the through hole;
the fireproof covering material disposed on the inner circumferential surface of the main body;
A beam reinforcing metal fitting characterized by comprising:
梁に形成された貫通孔又は前記貫通孔に固定された梁補強金具の内面に、前記耐火被覆材が配置され、
前記耐火被覆材の両側に張り出した部位が折り曲げられ、前記貫通孔の外周部又は前記梁補強金具に張り付けられることを特徴とする耐火被覆材保持構造。 A fireproof coating holding material structure using the fireproof coating material according to claim 3 ,
The fireproof covering material is arranged on the inner surface of a through hole formed in a beam or a beam reinforcing metal fitting fixed to the through hole,
A fireproof covering material holding structure characterized in that portions of the fireproof covering material that protrude on both sides are bent and attached to the outer periphery of the through hole or the beam reinforcing metal fittings.
梁に形成された貫通孔の内面、又は、梁補強金具の内面を覆うように前記耐火被覆材を配置して張り付ける工程と、
前記梁の外周面に吹付耐火材を吹き付ける工程と、
を具備し、
前記貼着材は、前記耐火材の長手方向に垂直な幅方向の両側に張り出した位置に配置され、
前記耐火被覆材を配置した後、前記耐火被覆材の両側に張り出した部位を折り曲げ、前記貫通孔の外周部又は前記梁補強金具に張り出し部を張り付けることを特徴とする耐火構造の構築方法。 A method for constructing a fireproof coating structure using the fireproof coating material according to any one of claims 1 to 5 , comprising:
arranging and pasting the fireproof covering material so as to cover the inner surface of the through hole formed in the beam or the inner surface of the beam reinforcing metal fitting;
Spraying a sprayed fireproofing material onto the outer peripheral surface of the beam;
Equipped with
The adhesive material is disposed at a position protruding from both sides in a width direction perpendicular to the longitudinal direction of the refractory material,
After arranging the fireproof covering material, the projecting parts on both sides of the fireproof covering material are bent, and the projecting parts are attached to the outer periphery of the through hole or the beam reinforcing metal fittings.
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