JPH10266397A - Fire resistance covering structure - Google Patents
Fire resistance covering structureInfo
- Publication number
- JPH10266397A JPH10266397A JP9284497A JP9284497A JPH10266397A JP H10266397 A JPH10266397 A JP H10266397A JP 9284497 A JP9284497 A JP 9284497A JP 9284497 A JP9284497 A JP 9284497A JP H10266397 A JPH10266397 A JP H10266397A
- Authority
- JP
- Japan
- Prior art keywords
- fire
- refractory
- layer
- steel
- steel frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 153
- 239000010959 steel Substances 0.000 claims abstract description 153
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 58
- 238000005187 foaming Methods 0.000 claims abstract description 46
- 239000004568 cement Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 91
- 238000000576 coating method Methods 0.000 claims description 91
- 239000010410 layer Substances 0.000 claims description 67
- 239000011247 coating layer Substances 0.000 claims description 66
- 239000003973 paint Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 2
- 238000010422 painting Methods 0.000 abstract 8
- 238000009413 insulation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000007665 sagging Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004114 Ammonium polyphosphate Chemical group 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical group NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Chemical group 0.000 description 1
- 239000004202 carbamide Chemical group 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- -1 defoamers Substances 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical group NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229940059574 pentaerithrityl Drugs 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- VKFFEYLSKIYTSJ-UHFFFAOYSA-N tetraazanium;phosphonato phosphate Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[O-]P([O-])(=O)OP([O-])([O-])=O VKFFEYLSKIYTSJ-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄骨柱および鉄骨
梁からなる躯体の耐火被覆構造に関し、発泡性耐火塗料
と、耐火被覆材とを併用した耐火被覆構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire-resistant coating structure for a frame made of steel columns and steel beams, and more particularly to a fire-resistant coating structure using a foamable fire-resistant paint and a fire-resistant coating material in combination.
【０００２】[0002]
【従来の技術】建築物等の躯体を構成する鉄骨柱および
鉄骨梁は、火災時等に火炎にさらされて高温になると、
その強度剛性が極端に低下し、該鉄骨柱および鉄骨梁に
より構成された建築物等が倒壊する恐れがある。このた
め、建築物等の鉄骨柱および鉄骨梁には、必要に応じて
耐火被覆を施すことが義務づけられている。2. Description of the Related Art Steel columns and beams that constitute a building body of a building or the like are exposed to a flame at the time of a fire or the like and become hot.
There is a possibility that the strength and rigidity thereof are extremely reduced, and a building or the like constituted by the steel column and the steel beam collapses. For this reason, it is mandatory to provide a fire-resistant coating on steel columns and beams in buildings and the like as necessary.
【０００３】従来より、鉄骨柱や鉄骨梁の耐火被覆構造
として、鉄骨柱や鉄骨梁の表面に火災時等の熱により発
泡して多孔質断熱層を形成する発泡性耐火塗料を塗布し
た耐火被覆構造が知られている。[0003] Conventionally, as a fire-resistant coating structure of a steel column or a steel beam, a fire-resistant coating in which a foaming refractory paint that forms a porous heat-insulating layer by foaming on the surface of a steel column or a steel beam by heat during a fire or the like is applied. The structure is known.
【０００４】[0004]
【発明が解決しようとする課題】上記発泡性耐火塗料の
乾燥・硬化によって得られる発泡性耐火塗膜層は、火災
等の温度上昇時に軟化して不燃ガスを発生し、発泡して
多孔質断熱層を形成することにより被覆した鉄骨柱等を
火炎から保護するものであるため、形成される多孔質断
熱層の厚さは厚いほど耐火性能は高くなる。ここで、形
成される多孔質断熱層の厚さを厚くするには、発泡性耐
火塗料の塗装回数を多くして発泡性耐火塗膜層の厚さを
厚くするか、或いは発泡倍率の大きい発泡性耐火塗料を
使用する必要がある。The foamable fire-resistant paint film layer obtained by drying and curing the above-mentioned foamable fire-resistant paint softens when a temperature rises due to a fire or the like, generates incombustible gas, foams, and forms a porous heat insulating material. By forming the layer, the coated steel column and the like are protected from the flame, so that the thicker the porous heat insulating layer formed, the higher the fire resistance performance. Here, in order to increase the thickness of the formed porous heat-insulating layer, the number of times of application of the foaming refractory paint is increased to increase the thickness of the foaming refractory coating layer, or the foaming rate of the foaming ratio is increased. Fire resistant paint must be used.
【０００５】しかしながら、従来の発泡性耐火塗料で
は、形成した発泡性耐火塗膜層の厚さが厚い場合、或い
は発泡倍率の大きい発泡性耐火塗料の乾燥・硬化によっ
て得られた発泡性耐火塗膜層の場合には、該発泡性耐火
塗膜層が温度上昇時に軟化して発泡前に自重により垂れ
下がる憂いが大きく、垂直に設置される鉄骨柱の上端部
付近、或いは鉄骨柱と鉄骨梁の下面とにより形成される
角部付近等を被覆する発泡性耐火塗膜層は、自重により
垂れ下がった場合にその上方からの垂れ下がりがないた
めに、図６（ａ）、（ｂ）の○部に示したようにその層
厚が薄くなり、その結果、形成される多孔質断熱層の厚
さも薄いものとなって、その部分の耐火性能が低下する
場合が存在した。[0005] However, in the case of the conventional foaming refractory paint, the foaming refractory paint film obtained by drying and curing the foamable refractory paint film having a large expansion ratio or a foamable refractory paint film having a large expansion ratio is used. In the case of a layer, there is a great concern that the foamable refractory coating layer softens when the temperature rises and hangs down by its own weight before foaming, and is near the upper end of a vertically installed steel column, or the lower surface of a steel column and steel beam. 6 (a) and 6 (b), since the foamable refractory coating layer covering the vicinity of the corner formed by the above does not sag from above when sagging by its own weight. As described above, the thickness of the layer becomes thinner, and as a result, the thickness of the formed porous heat-insulating layer also becomes thinner, and the fire resistance performance of the portion may be reduced.
【０００６】本発明は、上述した従来の発泡性耐火塗料
を使用した耐火被覆構造が有する課題に鑑み成されたも
のであって、その目的は、鉄骨柱を被覆した発泡性耐火
塗料による塗膜層の温度上昇時の垂れ下がりを防ぎ、も
って均一な厚さの多孔質断熱層が鉄骨柱の表面に形成さ
れて充分な耐火性能が得られる耐火被覆構造を提供する
ことにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional fire-resistant coating structure using a foamable fire-resistant paint, and has as its object to provide a coating film made of an expandable fire-resistant paint coated on a steel column. It is an object of the present invention to provide a fire-resistant coating structure in which a layer is prevented from sagging when the temperature rises, and a porous heat-insulating layer having a uniform thickness is formed on the surface of a steel column to obtain a sufficient fire-resistant performance.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、上述した
目的を達成すべく鋭意研究した結果、鉄骨梁の表面に耐
火被覆材層を形成するとともに、鉄骨柱の表面に形成し
た発泡性耐火塗料による塗膜層の周囲をも被覆するよう
に、耐火被覆材層を形成することにより、発泡性耐火塗
料による塗膜層の温度上昇時の垂れ下がりを防ぐことが
でき、均一な厚さの多孔質断熱層が鉄骨柱に形成される
との知見を得、本発明を完成させたものである。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above-mentioned object, and as a result, have formed a fire-resistant coating material layer on the surface of a steel beam and a foamed material formed on the surface of a steel column. By forming the refractory coating material layer so as to cover the periphery of the coating layer made of the fire-resistant paint, it is possible to prevent the coating layer made of the foaming fire-resistant paint from sagging when the temperature rises, and to have a uniform thickness. The inventors have found that a porous heat-insulating layer is formed on a steel column, and have completed the present invention.
【０００８】すなわち、本発明は、躯体を構成する鉄骨
柱の表面に発泡性耐火塗料による塗膜層を形成するとと
もに、鉄骨梁の表面に耐火被覆材層を形成し、かつ、該
耐火被覆材層と連続するように鉄骨梁とにより形成され
る角部を含む鉄骨柱の上端部周囲の発泡性耐火塗料によ
る塗膜層表面に耐火被覆材層を形成したことを特徴とす
る耐火被覆構造である。[0008] That is, the present invention is to form a coating layer made of an expandable fire-resistant paint on the surface of a steel column constituting a skeleton, and to form a fire-resistant coating layer on the surface of a steel beam, A fire-resistant coating structure characterized in that a fire-resistant coating material layer is formed on the surface of a coating layer made of foaming fire-resistant paint around the upper end of a steel column including a corner formed by a steel beam so as to be continuous with the layer. is there.
【０００９】さらに、本発明は、躯体を構成する鉄骨柱
及び鉄骨梁の表面に発泡性耐火塗料による塗膜層を形成
するとともに、鉄骨柱及び鉄骨梁とにより形成される角
部付近の鉄骨梁表面の発泡性耐火塗料による塗膜層表面
に耐火被覆材層を形成し、かつ、該耐火被覆材層と連続
するように鉄骨梁とにより形成される角部を含む鉄骨柱
の上端部周囲の発泡性耐火塗料による塗膜層表面に耐火
被覆材層を形成したことを特徴とする耐火被覆構造であ
る。Furthermore, the present invention provides a steel beam and a steel beam near a corner formed by a steel column and a steel beam, in which a coating layer made of a foamable refractory paint is formed on the surface of the steel column and the beam. A refractory coating material layer is formed on the surface of the coating layer made of the foaming refractory paint on the surface, and around the upper end portion of the steel column including a corner formed by the steel beam so as to be continuous with the refractory coating material layer. A fire-resistant coating structure characterized in that a fire-resistant coating material layer is formed on the surface of a coating layer made of a foaming fire-resistant paint.
【００１０】上記した本発明にかかる耐火被覆構造によ
れば、鉄骨柱の上端部付近の発泡性耐火塗膜層の表面に
形成した耐火被覆材層および鉄骨梁の表面の耐火被覆材
層が、温度上昇時の軟化状態にある発泡性耐火塗膜層を
鉄骨柱と狭持する状態で支えるため、その自重による垂
れ下がりを防止できる。According to the above-described fire-resistant coating structure of the present invention, the fire-resistant coating layer formed on the surface of the foamable fire-resistant coating layer near the upper end of the steel column and the fire-resistant coating layer on the surface of the steel beam are: Since the foamable refractory coating layer in the softened state at the time of temperature rise is supported in a state of being sandwiched between the steel columns, the sagging due to its own weight can be prevented.
【００１１】以下、本発明を詳細に説明する。まず、本
発明における躯体を構成する鉄骨柱及び鉄骨梁として
は、例えば、Ｈ型鋼、みぞ型鋼、Ｉ型鋼等の鉄骨および
例えば、角形鋼管、丸形鋼管等の鋼管が挙げられる。Hereinafter, the present invention will be described in detail. First, examples of the steel columns and steel beams constituting the skeleton in the present invention include steel frames such as H-shaped steel, grooved steel, and I-shaped steel, and steel pipes such as square steel pipes and round steel pipes.
【００１２】発泡性耐火塗膜層を形成する塗料として
は、例えば以下の結合剤、発泡剤、炭化層形成剤、無機
粉末、その他の添加剤からなる発泡性耐火塗料が挙げら
れる。 （１）結合剤 メラミン樹脂、アクリル樹脂、エポキシ樹脂、酢酸ビニ
ル樹脂、尿素樹脂、シリコン樹脂、ウレタン樹脂、水ガ
ラス （２）発泡剤 第一リン酸アンモニウム、第二リン酸アンモニウム、第
三リン酸アンモニウム、ポリリン酸アンモニウム、メラ
ミン、尿素、ジシアンジアミド、ジニトロソペンタメチ
レンテトラミン （３）炭化層形成剤 モノペンタエリスリトール、ジペンタエリスリトール、
トリペンタエリスリトール、グルコース （４）無機粉末 酸化チタン、酸化アルミニウム、酸化鉄、酸化ジルコニ
ウム、酸化ケイ素、粘土鉱物 （５）その他の添加剤 溶剤、可塑剤、分散剤、消泡剤、増粘剤、成膜助剤、難
燃剤、着色剤、硬化剤、湿潤剤Examples of the paint for forming the foamable refractory coating layer include foamable refractory paints comprising the following binder, foaming agent, carbonized layer forming agent, inorganic powder, and other additives. (1) Binder Melamine resin, acrylic resin, epoxy resin, vinyl acetate resin, urea resin, silicone resin, urethane resin, water glass (2) Foaming agent Ammonium monophosphate, ammonium diphosphate, tertiary phosphoric acid Ammonium, ammonium polyphosphate, melamine, urea, dicyandiamide, dinitrosopentamethylenetetramine (3) carbonized layer forming agent monopentaerythritol, dipentaerythritol,
Tripentaerythritol, glucose (4) inorganic powders titanium oxide, aluminum oxide, iron oxide, zirconium oxide, silicon oxide, clay minerals (5) other additives solvents, plasticizers, dispersants, defoamers, thickeners, Film forming aid, flame retardant, coloring agent, curing agent, wetting agent
【００１３】上記発泡性耐火塗料の乾燥・硬化により形
成する発泡性耐火塗膜層の厚さは、実用性及び経済性等
を考慮して該発泡性耐火塗膜層の発泡によって得られる
多孔質断熱層の厚さが４０〜５０ｍｍとなるように塗布
することが好ましい。そのため、目安として、発泡倍率
が５０倍の発泡性耐火塗料では、乾燥・硬化後の塗膜層
の厚さを１ｍｍ程度に、発泡倍率が２５倍の発泡性耐火
塗料では、乾燥・硬化後の塗膜層の厚さを２ｍｍ程度に
する。上記発泡性耐火塗料は、例えば、エアスプレー装
置、エアレススプレー装置、ハケ等を用いて塗布すれば
よい。The thickness of the foamable refractory coating layer formed by drying and curing the foamable refractory paint is determined by considering the porosity obtained by foaming the foamable refractory coating layer in consideration of practicality and economy. It is preferable to apply so that the thickness of the heat insulating layer is 40 to 50 mm. Therefore, as a guide, in the case of the foaming refractory paint having an expansion ratio of 50 times, the thickness of the coating layer after drying and curing is about 1 mm, and in the case of the foaming refractory coating having an expansion ratio of 25 times, after drying and curing. The thickness of the coating layer is set to about 2 mm. The foaming refractory paint may be applied using, for example, an air spray device, an airless spray device, a brush, or the like.
【００１４】なお、本発明でいう発泡性耐火塗料の発泡
倍率とは、以下に示す方法で測定したものである。 ３００×３００×６ｍｍの鉄板の片面に発泡性耐火塗
料を約１ｍｍの厚さに塗布し、乾燥・硬化によって得ら
れた発泡性耐火塗膜層の厚さを測定する。 上記鉄板を発泡性耐火塗膜層が形成した面が上となる
ように水平に耐火炉に入れ、「ＪＩＳ Ａ １３０４
（建築構造部分の耐火試験方法）」に規定された標準加
熱曲線に準じて６０分加熱する。 冷却後、鉄板上に形成された多孔質断熱層の厚さを測
定する。 次式により発泡性耐火塗料の発泡倍率を求める。 なお、上記式における発泡性耐火塗膜層の厚さ及び多孔
質断熱層の厚さは、鉄板の中心および鉄板の中心から１
５０ｍｍ離れた対角線上の４点の計５点で測定し、平均
値を求めたものである。また、発泡性耐火塗膜層の厚さ
は電磁式膜厚計或いはマイクロメータ等で、多孔質断熱
層の厚さはノギス等で測定する。The expansion ratio of the foaming refractory paint used in the present invention is measured by the following method. A foamable refractory paint is applied to one side of a 300 × 300 × 6 mm iron plate to a thickness of about 1 mm, and the thickness of the foamable refractory coating layer obtained by drying and curing is measured. The iron plate was placed horizontally in a refractory furnace such that the surface on which the foamable refractory coating layer was formed faced up, and the steel plate was subjected to "JIS A 1304".
(Fire resistance test method for architectural structural part) "for 60 minutes according to the standard heating curve. After cooling, the thickness of the porous heat-insulating layer formed on the iron plate is measured. The expansion ratio of the foaming refractory paint is determined by the following equation. Note that the thickness of the foamable refractory coating layer and the thickness of the porous heat-insulating layer in the above equation are 1 mm from the center of the iron plate and the center of the iron plate.
It was measured at a total of five points, four points on a diagonal line separated by 50 mm, and the average was determined. The thickness of the foaming refractory coating layer is measured with an electromagnetic film thickness meter or a micrometer, and the thickness of the porous heat insulating layer is measured with a caliper or the like.
【００１５】本発明の耐火被覆構造において、耐火被覆
材層は、鉄骨梁の表面に形成するとともに、この耐火被
覆材層と連続するように鉄骨梁との角部を含む鉄骨柱の
上端部周囲の発泡性耐火塗料による塗膜層の表面にも形
成する。具体的に説明すると、例えば、図１（ａ）に示
す鉄骨柱及び鉄骨梁からなる躯体においては、まず、鉄
骨梁の表面に、鉄骨柱と鉄骨梁とにより形成される角部
の鉄骨柱表面の発泡性耐火塗料による塗膜層の表面（図
１（ａ）中、Ａ１の部分）を被覆するように耐火被覆材
層を形成する。次に、鉄骨柱の上端部周囲の発泡性耐火
塗料による塗膜層の表面（図１（ａ）中、Ａ２の部分）
に、前記鉄骨梁表面の耐火被覆材層と連続した耐火被覆
材層を形成する（図１（ｂ））。また、図２（ａ）に示
す鉄骨柱及び鉄骨梁からなる躯体においては、鉄骨梁の
表面に、鉄骨柱と鉄骨梁とにより形成される角部の鉄骨
柱表面の発泡性耐火塗料による塗膜層の表面（図２
（ａ）中、Ｂ１の部分）を被覆するように耐火被覆材層
を形成し、さらに鉄骨柱の上端部周囲の発泡性耐火塗料
による塗膜層の表面（図２（ａ）中、Ｂ２の部分）に
も、前記鉄骨梁表面の耐火被覆材層と連続した耐火被覆
材層を形成する（図２（ｂ））。前記鉄骨柱の上端部周
囲を被覆する発泡性耐火塗料による塗膜層の表面に形成
する耐火被覆材層は、発泡性耐火塗料による塗膜層を囲
む閉断面を形成するようにする（図３参照）。In the fire-resistant coating structure of the present invention, the fire-resistant coating material layer is formed on the surface of the steel beam, and is formed around the upper end of the steel column including the corner with the steel beam so as to be continuous with the fire-resistant coating material layer. Also formed on the surface of the coating layer made of the foaming refractory paint. More specifically, for example, in a skeleton including a steel column and a steel beam shown in FIG. 1A, first, a surface of a corner of the steel column formed by the steel column and the steel beam is provided on the surface of the steel beam. A refractory coating material layer is formed so as to cover the surface of the coating layer (portion A1 in FIG. 1A) with the foamable refractory paint. Next, the surface of the coating layer made of the foaming refractory paint around the upper end of the steel column (A2 in FIG. 1A)
Next, a refractory coating layer continuous with the refractory coating layer on the surface of the steel beam is formed (FIG. 1B). In addition, in a skeleton composed of a steel column and a steel beam shown in FIG. 2A, a coating film made of a foaming refractory paint on a surface of a steel column at a corner formed by the steel column and the steel beam is formed on the surface of the steel beam. Layer surface (Fig. 2
(A), a refractory coating material layer is formed so as to cover B1), and further, the surface of the coating layer made of a foaming refractory paint around the upper end of the steel column (FIG. 2), a refractory coating layer continuous with the refractory coating layer on the surface of the steel beam is formed (FIG. 2B). The fire-resistant coating material layer formed on the surface of the coating layer made of the foaming refractory paint covering the periphery of the upper end of the steel column forms a closed section surrounding the coating layer made of the foaming refractory paint (FIG. 3). reference).
【００１６】鉄骨梁との角部を含む鉄骨柱の上端部周囲
の発泡性耐火塗料による塗膜層の表面に形成する耐火被
覆材層が、鉄骨梁表面の耐火被覆材層と連続していない
場合は、発泡性耐火塗膜層の垂れ下がりが起こるので、
耐火被覆材層は鉄骨梁と鉄骨柱で連続していることが重
要である。The refractory coating layer formed on the surface of the coating layer made of the foaming refractory paint around the upper end of the steel column including the corner with the steel beam is not continuous with the refractory coating layer on the surface of the steel beam. In this case, the foaming refractory coating layer will sag,
It is important that the refractory coating layer is continuous between the steel beam and the steel column.
【００１７】本発明の耐火被覆構造を構築する方法とし
ては、躯体を構成する鉄骨柱の表面に発泡性耐火塗料を
塗布し、乾燥して発泡性耐火塗膜層を形成した後、ま
ず、鉄骨柱と鉄骨梁とにより形成される角部の鉄骨柱表
面の発泡性耐火塗膜層の表面を被覆するように鉄骨梁の
表面に耐火被覆材層を形成し、この鉄骨梁の表面に形成
した耐火被覆材層と連続するように鉄骨柱の上端部周囲
の発泡性耐火塗膜層の表面に耐火被覆材層を形成する方
法が挙げられる。As a method of constructing the fire-resistant coating structure of the present invention, a foamable fire-resistant paint is applied to the surface of a steel column constituting a frame and dried to form a foamable fire-resistant coating layer. A fire-resistant coating material layer was formed on the surface of the steel beam to cover the surface of the foamable fire-resistant coating layer on the surface of the steel column at the corner formed by the column and the steel beam, and formed on the surface of this steel beam. A method of forming a fire-resistant coating material layer on the surface of the foamable fire-resistant coating film layer around the upper end portion of the steel column so as to be continuous with the fire-resistant coating material layer is exemplified.
【００１８】耐火被覆材層の材料および厚さは、要求さ
れる耐火構造に応じて、選択すればよい。耐火構造とし
ては、（１）建設省告示第１６７５号の第１〜５の一般
指定の耐火構造、（２）建設省告示第２９９９号に基づ
いた試験に合格して建設大臣の指定を受けた通則指定ま
たは個別指定の耐火構造、（３）建築基準法第３８条ま
たは第６７条に基づき建設大臣の特別指定を受けた耐火
構造、等が挙げられる。好ましい耐火被覆材層の材料
は、セメント系耐火被覆材であり、具体的な商品とし
て、例えば、商品名アサノスプレーコート・ウェット、
アサノスプレーコート・ニューシステム、アサノＦガー
ド（いずれも日本セメント（株）製）等が挙げられる。The material and thickness of the refractory coating material layer may be selected according to the required refractory structure. As the fireproof structure, (1) Fireproof structure specified in General Nos. 1 to 5 of Notification No. 1675 of the Ministry of Construction, and (2) Passed the test based on Notification No. 2999 of the Ministry of Construction and was designated by the Minister of Construction. (3) Fire-resistant structures specified by the Minister of Construction in accordance with Article 38 or 67 of the Building Standards Law. A preferred material of the refractory coating material layer is a cement-based refractory coating material, and specific products such as Asano Spray Coat Wet,
Asano Spray Coat New System, Asano F Guard (all manufactured by Nippon Cement Co., Ltd.) and the like.
【００１９】耐火被覆材層の形成方法としては、吹付け
施工、左官施工等が挙げられ、使用する耐火被覆材に応
じて、適宜選択すればよい。The method of forming the refractory coating material layer includes spraying, plastering and the like, and may be appropriately selected according to the refractory coating material to be used.
【００２０】本発明において、鉄骨柱と発泡性耐火塗膜
層との間、或いは、発泡性耐火塗膜層と耐火被覆材層と
の間に他の塗料層、又はプライマーを有してもかまわな
い。In the present invention, another paint layer or a primer may be provided between the steel column and the foamable refractory coating layer, or between the foamable refractory coating layer and the refractory coating material layer. Absent.
【００２１】なお、本発明において、鉄骨梁にも発泡性
耐火塗料を塗布する場合、鉄骨梁表面の発泡性耐火塗料
による塗膜層全面に耐火被覆材層を形成しても良いが、
作業性及び経済性等を考慮して、鉄骨柱と鉄骨梁とによ
り形成される角部付近の鉄骨梁表面の発泡性耐火塗料に
よる塗膜層表面に耐火被覆材層を形成するのが好ましい
（図４（ａ）、（ｂ））。この場合、鉄骨梁に形成され
る耐火被覆材層の長さは鉄骨柱と鉄骨梁とにより形成さ
れる角部から１０〜３０ｃｍ程度とするのが好ましい。In the present invention, when a foaming refractory paint is applied to a steel beam, a fireproof coating material layer may be formed on the entire surface of the coating layer of the foaming refractory paint on the surface of the steel beam.
In consideration of workability, economy, and the like, it is preferable to form a refractory coating material layer on the surface of the coating layer made of the foaming refractory paint on the surface of the steel beam near the corner formed by the steel column and the steel beam ( FIGS. 4A and 4B). In this case, the length of the refractory coating material layer formed on the steel beam is preferably about 10 to 30 cm from the corner formed by the steel column and the steel beam.
【００２２】[0022]
【実施例】以下、実施例により本発明を説明する。 １．使用材料 （１）発泡性耐火塗料 使用した発泡性耐火塗料の発泡倍率を以下に示す。 Ａ；発泡倍率１０倍 Ｂ；発泡倍率２０倍 Ｃ；発泡倍率５０倍 Ｄ；発泡倍率７０倍 （２）耐火被覆材 使用した耐火被覆材を以下に示す。 ａ；日本セメント（株）製アサノスプレーコート・ウェ
ット ｂ；日本セメント（株）製アサノスプレーコート・ニュ
ーシステム ｃ；日本セメント（株）製アサノＦガードThe present invention will be described below with reference to examples. 1. Materials used (1) Foamable refractory paint The expansion ratio of the foamable refractory paint used is shown below. A: expansion ratio 10 times B: expansion ratio 20 times C: expansion ratio 50 times D: expansion ratio 70 times (2) Fireproof coating material The fireproof coating materials used are shown below. a: Asano Spray Coat Wet manufactured by Nippon Cement Co., Ltd. b: Asano Spray Coat New System manufactured by Nippon Cement Co., Ltd. c: Asano F Guard manufactured by Nippon Cement Co., Ltd.
【００２３】図５（ａ）に示すような、鉄骨柱及び鉄骨
梁からなる躯体（鉄骨柱長さ；２．５ｍ、鉄骨梁長さ；
１ｍ）を作製し、試験例１〜１６では、該構造体の鉄骨
柱の表面に、発泡性耐火塗料を塗布し、乾燥・硬化させ
て表１に示す厚さの発泡性耐火塗膜層を形成した。その
後、図５（ｂ）に示すように、鉄骨梁の表面および鉄骨
柱の上端部周囲の発泡性耐火塗膜層表面に、耐火被覆材
層を表１に示す厚さに連続するように形成し、耐火被覆
構造体を作製した。試験例１７、１８は、鉄骨柱及び鉄
骨梁に発泡性耐火塗料を塗布し、乾燥・硬化させて表１
に示す厚さの発泡性耐火塗膜層を形成した後、図５
（ｃ）に示すように、鉄骨柱と鉄骨梁とにより形成され
る角部の鉄骨柱表面の発泡性耐火塗膜層の表面（Ｂ１の
部分）を被覆するように鉄骨柱と鉄骨梁とにより形成さ
れる角部付近の鉄骨梁表面の発泡性耐火塗膜層の表面お
よび鉄骨柱の上端部周囲の発泡性耐火塗膜層表面（Ｂ２
の部分）に、耐火被覆材層を表１に示す厚さに連続する
ように形成したものである。なお、鉄骨梁表面の発泡性
耐火塗膜層の表面に形成した耐火被覆材層の長さは２０
ｃｍとした。試験例１９、２０は、鉄骨柱の表面に、発
泡性耐火塗料を塗布し、乾燥・硬化させて表１に示す厚
さの発泡性耐火塗膜層を形成した後、鉄骨梁の表面のみ
に耐火被覆材層を形成したもので、鉄骨柱の上端部周囲
の発泡性耐火塗膜層の表面には耐火被覆材層を設けなか
ったものである。試験例２１、２２は、鉄骨梁の表面の
耐火被覆材層と鉄骨柱の上端部周囲の発泡性耐火塗膜層
の表面の耐火被覆材層が連続していないものである（図
５（ｄ）、（ｅ））。発泡性耐火塗料の塗布は、グラコ
（株）製エアレススプレー装置を用いて行った。さら
に、耐火被覆材の施工は、ａの耐火被覆材は左官施工に
より行った。ｂの耐火被覆材は吹付けで行った。ｃの耐
火被覆材は乾式吹付けで行った。また、発泡性耐火塗膜
層の厚さはサンコウ電子研究所（株）製のペンプローブ
膜厚計で、耐火被覆材層の厚さはノギスで測定した。As shown in FIG. 5A, a frame (steel column length; 2.5 m; steel beam length;
1m), and in Test Examples 1 to 16, a foamable refractory paint was applied to the surface of the steel column of the structure, dried and cured to form a foamable refractory coating layer having a thickness shown in Table 1. Formed. Then, as shown in FIG. 5B, a refractory coating material layer is formed on the surface of the steel beam and the surface of the foamable refractory coating layer around the upper end of the steel column so as to be continuous to the thickness shown in Table 1. Then, a fire-resistant coated structure was produced. In Test Examples 17 and 18, a foamable refractory paint was applied to a steel column and a steel beam, and dried and cured to obtain Table 1.
After forming the foamable refractory coating layer having the thickness shown in FIG.
As shown in (c), the steel columns and the steel beams are used to cover the surface (portion B1) of the foamable refractory coating layer on the corners of the steel columns at the corners formed by the steel columns and the steel beams. The surface of the foaming refractory coating layer on the surface of the steel beam near the corner to be formed and the surface of the foaming refractory coating layer around the upper end of the steel column (B2
), A refractory coating material layer was formed so as to be continuous to the thickness shown in Table 1. The length of the refractory coating material layer formed on the surface of the foamable refractory coating layer on the surface of the steel beam is 20.
cm. In Test Examples 19 and 20, a foamable fire-resistant paint was applied to the surface of a steel column, dried and cured to form a foamable fire-resistant coating layer having a thickness shown in Table 1, and then applied only to the surface of the steel beam. A fire-resistant coating material layer was formed, and the fire-resistant coating material layer was not provided on the surface of the foamable fire-resistant coating film layer around the upper end of the steel column. In Test Examples 21 and 22, the fireproof coating material layer on the surface of the steel beam and the fireproof coating material layer on the surface of the foamable fireproof coating layer around the upper end of the steel column were not continuous (FIG. 5 (d)). ), (E)). The foaming refractory paint was applied using an airless spray device manufactured by Graco Co., Ltd. Further, the construction of the fireproof coating material was performed by plastering the fireproof coating material of a. The refractory coating material of b was sprayed. The refractory coating material of c was applied by dry spraying. The thickness of the foamable refractory coating layer was measured with a pen probe film thickness meter manufactured by Sanko Electronic Research Laboratory Co., Ltd., and the thickness of the refractory coating material layer was measured with calipers.
【００２４】[0024]
【表１】 [Table 1]
【００２５】上記耐火被覆構造体を「ＪＩＳ Ａ １３
０４（建築構造部分の耐火試験方法）」に規定された標
準加熱曲線に準じて１２０分加熱し、その後、鉄骨柱の
表面に形成された多孔質断熱層を目視観察するととも
に、適宜ノギスで厚さを測定した。その結果を表２に示
す。The above fire-resistant coating structure is referred to as “JIS A 13
04 (fire resistance test method for building structural parts) ”for 120 minutes, then visually observe the porous heat-insulating layer formed on the surface of the steel column, and use a caliper as appropriate. Was measured. Table 2 shows the results.
【００２６】[0026]
【表２】 [Table 2]
【００２７】上記試験結果から、本発明にかかる耐火被
覆構造を施した躯体では、鉄骨柱の表面に割れ等の存在
しない均一な厚さの多孔質断熱層が形成されることが判
明した（試験例１〜１８）。一方、鉄骨柱の上端部周囲
の発泡性耐火塗膜層の表面に耐火被覆材層を設けなかっ
た躯体（試験例１９、２０）では、発泡性耐火塗膜層の
温度上昇時の垂れ下がりを防ぐことができず、形成され
る多孔質断熱層の厚さの薄い部分が存在することが判明
した。また、鉄骨柱の上端部周囲を被覆する発泡性耐火
塗膜層の表面に形成された耐火被覆材層が鉄骨梁表面の
耐火被覆材層と連続していなかった躯体（試験例２１、
２２）でも、発泡性耐火塗膜層の温度上昇時の垂れ下が
りを防ぐことができず、形成される多孔質断熱層の厚さ
の薄い部分が存在することが判明した。From the above test results, it was found that a porous heat insulating layer having a uniform thickness without cracks or the like was formed on the surface of the steel column in the frame provided with the fireproof coating structure according to the present invention (test Examples 1 to 18). On the other hand, in the frame (Test Examples 19 and 20) in which the fireproof coating material layer was not provided on the surface of the foamable fireproof coating layer around the upper end portion of the steel column, the sagging when the temperature of the foamable fireproof coating layer increased was prevented. It was found that there was a portion where the thickness of the formed porous heat insulating layer was small. Further, the fire-resistant coating material layer formed on the surface of the foamable fire-resistant coating film layer surrounding the upper end portion of the steel column was not continuous with the fire-resistant coating material layer on the steel beam surface (Test Example 21,
22), it was not possible to prevent sagging when the temperature of the foamable refractory coating layer was increased, and it was found that there was a portion where the thickness of the formed porous heat insulating layer was small.
【００２８】[0028]
【発明の効果】本発明にかかる耐火被覆構造によれば、
鉄骨柱を被覆した発泡性耐火塗料による塗膜層の温度上
昇時の垂れ下がりを防ぐことができ、均一な厚さの多孔
質断熱層が鉄骨柱の表面に形成されるので、充分な耐火
性能が得られる耐火被覆構造を提供できる。According to the fire-resistant coating structure of the present invention,
The foamed refractory paint that covers the steel column can prevent the coating layer from sagging when the temperature rises, and a porous heat-insulating layer with a uniform thickness is formed on the surface of the steel column. The resulting fireproof coating structure can be provided.
【図１】（ａ）鉄骨柱および鉄骨梁からなる躯体の斜視
図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 1A is a perspective view of a skeleton including a steel column and a steel beam. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図２】（ａ）鉄骨柱および鉄骨梁からなる躯体の斜視
図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 2A is a perspective view of a skeleton including a steel column and a steel beam. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図３】 本発明にかかる耐火被覆構造を施した鉄骨柱
の横断面図である。FIG. 3 is a cross-sectional view of a steel column provided with a fire-resistant coating structure according to the present invention.
【図４】（ａ）本発明にかかる耐火被覆構造を施した躯
体の斜視図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 4 (a) is a perspective view of a frame provided with a fire-resistant coating structure according to the present invention. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図５】（ａ）試験に使用した躯体の斜視図である。 （ｂ）試験例１〜１６における耐火被覆構造を施した躯
体の斜視図である。 （ｃ）試験例１７および１８における耐火被覆構造を施
した躯体の斜視図である。 （ｄ）試験例２１および２２における耐火被覆構造を施
した躯体の斜視図である。 （ｅ）試験例２１および２２における耐火被覆構造を施
した躯体の上端部付近の横断面図である。FIG. 5 (a) is a perspective view of a skeleton used for a test. (B) It is a perspective view of the frame provided with the fireproof coating structure in Test Examples 1-16. (C) It is a perspective view of the frame | body provided with the fireproof coating structure in the test examples 17 and 18. (D) It is a perspective view of the frame | body provided with the fireproof coating structure in the test examples 21 and 22. (E) is a cross-sectional view of the vicinity of the upper end of the skeleton provided with the fire-resistant coating structure in Test Examples 21 and 22.
【図６】従来の耐火被覆構造を施した躯体の半断面図で
あって、（ａ）は鉄骨柱の上端部周囲、（ｂ）は鉄骨柱
と鉄骨梁の接続部を示したものである。6A and 6B are half cross-sectional views of a skeleton provided with a conventional fire-resistant coating structure, where FIG. 6A shows the vicinity of the upper end of a steel column, and FIG. 6B shows a connection portion between the steel column and a steel beam. .
Ａ１、Ｂ１ 鉄骨柱と鉄骨梁とにより形成される角部の
鉄骨柱表面の発泡性耐火塗料による塗膜層 Ａ２、Ｂ２ 鉄骨柱の上端部周囲を被覆する発泡性耐火
塗料による塗膜層A1, B1 Coating layer made of foaming refractory paint on the surface of a steel column at the corner formed by a steel column and a steel beam A2, B2 Coating layer made of foaming refractory paint covering the periphery of the upper end of a steel column
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年５月２７日[Submission date] May 27, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】（ａ）鉄骨柱および鉄骨梁からなる躯体の斜視
図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 1A is a perspective view of a skeleton including a steel column and a steel beam. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図２】（ａ）鉄骨柱および鉄骨梁からなる躯体の斜視
図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 2A is a perspective view of a skeleton including a steel column and a steel beam. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図３】 本発明にかかる耐火被覆構造を施した鉄骨柱
の横断面図である。FIG. 3 is a cross-sectional view of a steel column provided with a fire-resistant coating structure according to the present invention.
【図４】（ａ）本発明にかかる耐火被覆構造を施した躯
体の斜視図である。 （ｂ）本発明にかかる耐火被覆構造を施した躯体の斜視
図である。FIG. 4 (a) is a perspective view of a frame provided with a fire-resistant coating structure according to the present invention. (B) It is a perspective view of the frame provided with the fire-resistant coating structure concerning this invention.
【図５】 試験に使用した躯体の斜視図である。FIG. 5 is a perspective view of a skeleton used in the test.
【図６】 試験例１〜１６における耐火被覆構造を施し
た躯体の斜視図である。FIG. 6 is a perspective view of a skeleton provided with a fireproof covering structure in Test Examples 1 to 16.
【図７】 試験例１７および１８における耐火被覆構造
を施した躯体の斜視図である。FIG. 7 is a perspective view of a skeleton provided with a fireproof covering structure in Test Examples 17 and 18.
【図８】（ａ）試験例２１および２２における耐火被覆
構造を施した躯体の斜視図である。 （ｂ）試験例２１および２２における耐火被覆構造を施
した躯体の上端部付近の横断面図である。FIG. 8 (a) is a perspective view of a skeleton provided with a fireproof covering structure in Test Examples 21 and 22. (B) It is a cross-sectional view of the vicinity of the upper end part of the frame provided with the fireproof coating structure in Test Examples 21 and 22.
【図９】 従来の耐火被覆構造を施した躯体の半断面図
であって、（ａ）は鉄骨柱の上端部周囲、（ｂ）は鉄骨
柱と鉄骨梁の接続部を示したものである。9A and 9B are half cross-sectional views of a skeleton provided with a conventional fire-resistant coating structure, wherein FIG. 9A shows the vicinity of the upper end of a steel column, and FIG. 9B shows a connection portion between the steel column and a steel beam. .
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】全図[Correction target item name] All figures
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
【図２】 FIG. 2
【図３】 FIG. 3
【図５】 FIG. 5
【図６】 FIG. 6
【図７】 FIG. 7
【図４】 FIG. 4
【図８】 FIG. 8
【図９】 FIG. 9
Claims (3)
火塗料による塗膜層を形成するとともに、鉄骨梁の表面
に耐火被覆材層を形成し、かつ、該耐火被覆材層と連続
するように鉄骨梁とにより形成される角部を含む鉄骨柱
の上端部周囲の発泡性耐火塗料による塗膜層表面に耐火
被覆材層を形成したことを特徴とする耐火被覆構造。1. A coating layer made of an expandable fire-resistant paint is formed on the surface of a steel column constituting a building body, a fire-resistant coating layer is formed on a surface of a steel beam, and is continuous with the fire-resistant coating layer. A fire-resistant coating structure characterized in that a fire-resistant coating material layer is formed on the surface of a coating layer made of a foamable fire-resistant paint around the upper end of a steel column including a corner formed by a steel beam.
に発泡性耐火塗料による塗膜層を形成するとともに、鉄
骨柱及び鉄骨梁とにより形成される角部付近の鉄骨梁表
面の発泡性耐火塗料による塗膜層表面に耐火被覆材層を
形成し、かつ、該耐火被覆材層と連続するように鉄骨梁
とにより形成される角部を含む鉄骨柱の上端部周囲の発
泡性耐火塗料による塗膜層表面に耐火被覆材層を形成し
たことを特徴とする耐火被覆構造。2. A foam layer made of a foaming refractory paint is formed on the surface of a steel column and a steel beam constituting a skeleton, and the foaming property of the surface of the steel beam near a corner formed by the steel column and the steel beam. Foamable refractory paint around the upper end of a steel column including a corner formed by a steel beam so as to form a refractory coating material layer on the surface of a coating film layer made of a refractory coating material and to be continuous with the refractory coating material layer A fire-resistant coating structure, characterized in that a fire-resistant coating material layer is formed on the surface of the coating layer formed by the method.
被覆材であることを特徴とする請求項１又は２記載の耐
火被覆構造。3. The fire-resistant coating structure according to claim 1, wherein the material of the fire-resistant coating material layer is a cement-based fire-resistant coating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9284497A JPH10266397A (en) | 1997-03-28 | 1997-03-28 | Fire resistance covering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9284497A JPH10266397A (en) | 1997-03-28 | 1997-03-28 | Fire resistance covering structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10266397A true JPH10266397A (en) | 1998-10-06 |
Family
ID=14065753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9284497A Pending JPH10266397A (en) | 1997-03-28 | 1997-03-28 | Fire resistance covering structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10266397A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006002535A (en) * | 2004-06-21 | 2006-01-05 | Kikusui Chemical Industries Co Ltd | Fire-resistant coating and its construction method |
| JP2006002534A (en) * | 2004-06-21 | 2006-01-05 | Kikusui Chemical Industries Co Ltd | Fire-resistant coating and its construction method |
| JP2020016030A (en) * | 2018-07-23 | 2020-01-30 | 大成建設株式会社 | Fire-resistant coating structure for steel beam |
| JP2021055451A (en) * | 2019-09-30 | 2021-04-08 | 大和ハウス工業株式会社 | Spray device |
-
1997
- 1997-03-28 JP JP9284497A patent/JPH10266397A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006002535A (en) * | 2004-06-21 | 2006-01-05 | Kikusui Chemical Industries Co Ltd | Fire-resistant coating and its construction method |
| JP2006002534A (en) * | 2004-06-21 | 2006-01-05 | Kikusui Chemical Industries Co Ltd | Fire-resistant coating and its construction method |
| JP4495530B2 (en) * | 2004-06-21 | 2010-07-07 | 菊水化学工業株式会社 | Fireproof coating and fireproof coating construction method |
| JP4495529B2 (en) * | 2004-06-21 | 2010-07-07 | 菊水化学工業株式会社 | Fireproof coating and fireproof coating construction method |
| JP2020016030A (en) * | 2018-07-23 | 2020-01-30 | 大成建設株式会社 | Fire-resistant coating structure for steel beam |
| JP2021055451A (en) * | 2019-09-30 | 2021-04-08 | 大和ハウス工業株式会社 | Spray device |
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