JP2017166283A - Curtain wall - Google Patents

Curtain wall Download PDF

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JP2017166283A
JP2017166283A JP2016055081A JP2016055081A JP2017166283A JP 2017166283 A JP2017166283 A JP 2017166283A JP 2016055081 A JP2016055081 A JP 2016055081A JP 2016055081 A JP2016055081 A JP 2016055081A JP 2017166283 A JP2017166283 A JP 2017166283A
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spandrel
board
fireproof board
fireproof
frame member
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光彦 矢崎
Mitsuhiko Yazaki
光彦 矢崎
春樹 古河
Haruki Furukawa
春樹 古河
晃一 柴田
Koichi Shibata
晃一 柴田
菊池　秀明
Hideaki Kikuchi
秀明 菊池
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SHOWA LEAF CO Ltd
Nippon Steel Coated Sheet Corp
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SHOWA LEAF CO Ltd
Nippon Steel and Sumikin Coated Sheet Corp
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Priority to JP2016055081A priority Critical patent/JP2017166283A/en
Publication of JP2017166283A publication Critical patent/JP2017166283A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a curtain wall that is less likely to cause dew condensation.SOLUTION: A curtain wall includes a spandrel member 121 and a fireproof board 15. The spandrel member 121 and the fireproof board 15 face each other. A space 16 is formed between the spandrel member 121 and the fireproof board 15. The fireproof board 15 is a sandwich panel having a core material 157 provided between two metal skins 151 and 152.SELECTED DRAWING: Figure 2

Description

本発明は、カーテンウォールに関し、より詳しくは、高層ビルなどの建物の外壁として適用可能なカーテンウォールに関する。   The present invention relates to a curtain wall, and more particularly to a curtain wall applicable as an outer wall of a building such as a high-rise building.

建物の外壁として各種のカーテンウォールが提案されている（例えば、特許文献１参照）。カーテンウォールは、建物の躯体の周囲に、複数の窓部材と複数のスパンドレル部材とが縦横に並んで形成されている。縦方向においては、複数の窓部材と複数のスパンドレル部材とが交互に並んでいる。窓部材とスパンドレル部材とは枠部材を用いて躯体に取り付けられている。躯体の端面には耐火ボードが設けられている。耐火ボードは、屋内での火災発生時に、火炎がスパンドレル部材と躯体との間の空間に侵入するのを防止しようとするものであり、これにより、火災がカーテンウォールと躯体との間の空間を通じて燃え広がるのを抑制し、建物全体が延焼するのを防止しようとするものである。耐火ボードはスパンドレル部材と対向して設けられている。耐火ボードとスパンドレル部材との間には空間が設けられている。耐火ボードとスパンドレル部材との間の空間は全周にわたって上記枠部材で囲まれている。   Various curtain walls have been proposed as outer walls of buildings (see, for example, Patent Document 1). The curtain wall is formed by arranging a plurality of window members and a plurality of spandrel members vertically and horizontally around a building frame. In the vertical direction, a plurality of window members and a plurality of spandrel members are alternately arranged. The window member and the spandrel member are attached to the housing using a frame member. A fireproof board is provided on the end face of the housing. The fireproof board is intended to prevent a flame from entering the space between the spandrel member and the housing in the event of a fire in an indoor space, so that the fire can pass through the space between the curtain wall and the housing. It is intended to suppress the spread of fire and prevent the entire building from spreading. The fireproof board is provided to face the spandrel member. A space is provided between the fireproof board and the spandrel member. The space between the fireproof board and the spandrel member is surrounded by the frame member over the entire circumference.

通常、枠部材と耐火ボードの周端部とは接触しているだけであり、また枠部材とスパンドレル部材の周端部も接触しているだけである。従って、枠部材と耐火ボードの周端部の間や、枠部材とスパンドレル部材の周端部の間には、若干の隙間が生じており、この隙間により耐火ボードとスパンドレル部材との間の空間は通気性を有している。   Usually, the frame member and the peripheral end of the fireproof board are only in contact, and the frame member and the peripheral end of the spandrel member are also in contact. Therefore, a slight gap is generated between the frame member and the peripheral end of the fireproof board, or between the frame member and the spandrel member, and the space between the fireproof board and the spandrel member is formed by this gap. Is breathable.

しかし、最近の傾向として、高気密の建物が要求されており、そのため、カーテンウォールの断熱性が不足したり透湿抵抗が低かったりすると結露が起こりやすくなる。そこで、高断熱化及び透湿抵抗を高くするという要求に応えるため、カーテンウォールの断熱性と気密性の向上を目的として、上記の隙間をシールで塞ぐことが多くなっている。この場合は、耐火ボードとスパンドレル部材との間の空間には通気性がほとんどない。   However, as a recent trend, highly airtight buildings are demanded. For this reason, if the insulation properties of the curtain wall are insufficient or the moisture resistance is low, condensation tends to occur. Therefore, in order to meet the demand for higher heat insulation and higher moisture resistance, the gaps are often sealed with a seal in order to improve the heat insulation and air tightness of the curtain wall. In this case, the space between the fireproof board and the spandrel member has little air permeability.

特開２０１１−１９０６１４号公報JP 2011-190614 A

従来のカーテンウォールでは、耐火ボードが繊維入りけい酸カルシウム板、石膏ボード、ロックウールボード、セラミックファイバーボードで形成されているため、湿気が耐火ボードを通過しやすい。従って、屋内の湿気が耐火ボードを通過して耐火ボードとスパンドレル部材との間の空間に浸入しやすいが、この空間に通気性がほとんどない場合には、耐火ボードの断熱性不足により耐火ボードの空間側の表面（スパンドレル部材の方に向いている面）やスパンドレル部材の空間側の表面（耐火ボードの方を向いている面）に結露が生じやすい（耐結露性能が低い）という問題があった。   In the conventional curtain wall, since the fireproof board is formed of a calcium silicate board containing fibers, a gypsum board, a rock wool board, and a ceramic fiber board, moisture easily passes through the fireproof board. Therefore, it is easy for moisture in the room to pass through the fireproof board and enter the space between the fireproof board and the spandrel member. There is a problem that condensation tends to occur on the surface on the space side (surface facing the spandrel member) and the surface on the space side of the spandrel member (surface facing the fireproof board) (condensation resistance is low). It was.

本発明は上記の点に鑑みてなされたものであり、透湿抵抗(耐結露性能)の向上を図り結露が生じにくいカーテンウォールを提供することを目的とするものである。   The present invention has been made in view of the above points, and an object of the present invention is to provide a curtain wall in which moisture resistance (condensation resistance) is improved and condensation is unlikely to occur.

本発明は、スパンドレル部材と、耐火ボードとを備え、前記スパンドレル部材と前記耐火ボードは対向しており、前記スパンドレル部材と前記耐火ボードとの間に空間が形成されたカーテンウォールであって、前記耐火ボードは二枚の金属外皮の間に芯材を有するサンドイッチパネルであることを特徴とする。   The present invention includes a spandrel member and a fireproof board, the spandrel member and the fireproof board are opposed to each other, and a curtain wall in which a space is formed between the spandrel member and the fireproof board, The refractory board is a sandwich panel having a core material between two metal shells.

前記カーテンウォールは、前記スパンドレル部材を保持する枠部材を備え、前記耐火ボードと前記枠部材との間に音鳴りの低減を図るための緩衝材を備えていることが好ましい。   It is preferable that the curtain wall includes a frame member that holds the spandrel member, and includes a buffer material for reducing noise between the fireproof board and the frame member.

本発明では、繊維入りけい酸カルシウム板、石膏ボード、ロックウールボード、セラミックファイバーボードよりも透湿性の低いサンドイッチパネルを耐火ボードとしているため、湿気が耐火ボードを通過しにくくなり、スパンドレル部材と耐火ボードとの間の空間に湿気が侵入しにくい。従って、スパンドレル部材と耐火ボードとの間の空間に結露が生じにくくなる。   In the present invention, the sandwich panel having lower moisture permeability than the calcium silicate board containing fiber, gypsum board, rock wool board, and ceramic fiber board is used as the fireproof board. Therefore, it becomes difficult for moisture to pass through the fireproof board. Moisture does not easily enter the space between the boards. Therefore, condensation is less likely to occur in the space between the spandrel member and the fireproof board.

図１は、本発明の実施の形態を示す一部の正面図である。FIG. 1 is a partial front view showing an embodiment of the present invention. 図２は、本発明の実施の形態を示す一部の縦断面図である。FIG. 2 is a partial longitudinal sectional view showing an embodiment of the present invention. 図３Ａは、耐火パネルの一例を示す横断面図である。図３Ｂは、耐火パネルの一例を示す縦断面図である。図３Ｃは、耐火パネルの一例を示す斜視図である。FIG. 3A is a cross-sectional view showing an example of a fireproof panel. FIG. 3B is a longitudinal sectional view showing an example of a fireproof panel. FIG. 3C is a perspective view showing an example of a fireproof panel. 図４Ａは、耐火パネルの取付構造の一例を示す一部の平面図である。図４Ｂは、耐火パネルの取付構造の一例を示す一部の背面図である。FIG. 4A is a partial plan view showing an example of a fireproof panel mounting structure. FIG. 4B is a partial rear view showing an example of a fireproof panel mounting structure. 図５Ａは、耐火パネルの取付構造の一例を示す一部の正面図である。図５Ｂは、耐火パネルの取付構造の一例を示す一部の側面図である。FIG. 5A is a partial front view showing an example of a fireproof panel mounting structure. FIG. 5B is a partial side view showing an example of a fireproof panel mounting structure. 図６Ａは、パネル取付具の一例を示す平面図である。図６Ｂは、パネル取付具の一例を示す側面図である。図６Ｃは、パネル取付具の一例を示す背面図である。FIG. 6A is a plan view illustrating an example of a panel fixture. FIG. 6B is a side view showing an example of the panel fixture. FIG. 6C is a rear view showing an example of the panel fixture. 図７Ａは、耐火パネルの取付工程を示す一部の斜視図である。図７Ｂは、耐火パネルの取付工程を示す一部の斜視図である。図７Ｃは、耐火パネルの取付工程を示す一部の斜視図である。図７Ｄは、耐火パネルの取付状態を示す斜視図である。FIG. 7A is a partial perspective view illustrating a process of attaching a fireproof panel. FIG. 7B is a partial perspective view illustrating a process of attaching the fireproof panel. FIG. 7C is a partial perspective view illustrating a process of attaching the fireproof panel. FIG. 7D is a perspective view showing an attached state of the fireproof panel. 図８は、本発明の実施の形態を示す一部の横断面図である。FIG. 8 is a partial cross-sectional view showing an embodiment of the present invention.

以下、本発明を実施するための形態を説明する。   Hereinafter, modes for carrying out the present invention will be described.

図１は、カーテンウォール１０の屋外側の表面の一部を示している。カーテンウォール１０は、横方向に長い複数の窓部１１と、横方向に長い複数のスパンドレル部１２とを備えている。窓部１１とスパンドレル部１２とは縦方向に交互に並んでいる。窓部１１は複数の窓部材１１１が横方向に並んで形成されている。スパンドレル部１２は複数のスパンドレル部材１２１が横方向に並んで形成されている。窓部材１１１はガラス板などの透明部材が用いられる。スパンドレル部材１２１はガラス板などの透明部材が用いられるが、コンクリート板などの不透明部材（外壁板）などであってもよい。   FIG. 1 shows a part of the surface of the curtain wall 10 on the outdoor side. The curtain wall 10 includes a plurality of window portions 11 that are long in the horizontal direction, and a plurality of spandrel portions 12 that are long in the horizontal direction. The window parts 11 and the spandrel parts 12 are arranged alternately in the vertical direction. The window part 11 is formed with a plurality of window members 111 arranged in the horizontal direction. The spandrel part 12 is formed with a plurality of spandrel members 121 arranged in the horizontal direction. As the window member 111, a transparent member such as a glass plate is used. The spandrel member 121 is a transparent member such as a glass plate, but may be an opaque member (outer wall plate) such as a concrete plate.

窓部材１１１とスパンドレル部材１２１は枠部材１３に保持されている。枠部材１３は複数の縦枠部材（方立）１３１と複数の横枠部材（無目）１３２とを格子状に組んで形成されている。縦枠部材１３１は縦方向に長く形成され、横枠部材１３２は横方向に長く形成されている。複数の縦枠部材１３１の各々はブラケットにより躯体１４に取り付けられている。また複数の横枠部材１３２の各々は隣り合う縦枠部材１３１に架け渡されている。   The window member 111 and the spandrel member 121 are held by the frame member 13. The frame member 13 is formed by assembling a plurality of vertical frame members (vertical) 131 and a plurality of horizontal frame members (unfinished) 132 in a lattice shape. The vertical frame member 131 is long in the vertical direction, and the horizontal frame member 132 is long in the horizontal direction. Each of the plurality of vertical frame members 131 is attached to the housing 14 by a bracket. Further, each of the plurality of horizontal frame members 132 is bridged between adjacent vertical frame members 131.

縦枠部材１３１と横枠部材１３２は、例えば、アルミニウム製のものが用いられる。窓部材１１１の横方向に長い端部（上端部及び下端部）は横枠部材１３２と連結されている。窓部材１１１の縦方向に長い端部（左端部及び右端部）は縦枠部材１３１と連結されている。またスパンドレル部材１２１の横方向に長い端部（上端部及び下端部）は横枠部材１３２と連結されている。スパンドレル部材１２１の縦方向に長い端部（左端部及び右端部）は縦枠部材１３１と連結されている。従って、縦方向で隣接する窓部材１１１とスパンドレル部材１２１との間には横枠部材１３２が介在している。横方向で隣接する窓部材１１１と窓部材１１１との間には縦枠部材１３１が介在し、横方向で隣接するスパンドレル部材１２１とスパンドレル部材１２１との間にも縦枠部材１３１が介在している。   The vertical frame member 131 and the horizontal frame member 132 are made of, for example, aluminum. End portions (upper end portion and lower end portion) that are long in the horizontal direction of the window member 111 are connected to the horizontal frame member 132. End portions (left end portion and right end portion) that are long in the vertical direction of the window member 111 are connected to the vertical frame member 131. End portions (upper end portion and lower end portion) that are long in the horizontal direction of the spandrel member 121 are connected to the horizontal frame member 132. End portions (left end portion and right end portion) that are long in the vertical direction of the spandrel member 121 are connected to the vertical frame member 131. Therefore, the horizontal frame member 132 is interposed between the window member 111 and the spandrel member 121 adjacent in the vertical direction. A vertical frame member 131 is interposed between the window members 111 adjacent to each other in the horizontal direction, and a vertical frame member 131 is also interposed between the spandrel member 121 and the span drel member 121 adjacent in the horizontal direction. Yes.

図２は、カーテンウォール１０の一部の縦断面を示している。スパンドレル部１２に対応する位置には建物の躯体１４が形成されている。躯体１４はコンクリートスラブなどで平板状に形成されている。躯体１４の上面は上階の床面として形成可能であり、躯体１４の下面は下階の天井として形成可能である。   FIG. 2 shows a longitudinal section of a part of the curtain wall 10. A building housing 14 is formed at a position corresponding to the spandrel portion 12. The housing 14 is formed in a flat plate shape with a concrete slab or the like. The upper surface of the housing 14 can be formed as an upper floor surface, and the lower surface of the housing 14 can be formed as a lower ceiling.

躯体１４の端面とスパンドレル部材１２１との間には耐火ボード１５が設けられている。耐火ボード１５は火災時の火炎や熱によって変形しにくくて破壊しにくい板材である。耐火ボード１５の上端は躯体１４の上面よりも上に位置しており、耐火ボード１５の下端は躯体１４の下面よりも下に位置している。また耐火ボード１５はスパンドレル部材１２１と対向して配置されており、耐火ボード１５とスパンドレル部材１２１との間には空間１６が設けられている。耐火ボード１５の横方向に長い端部（上端部及び下端部）は横枠部材１３２と接続されている。耐火ボード１５の縦方向に長い端部（左端部及び右端部）は縦枠部材１３１と接続されている。なお、耐火ボード１５と横枠部材１３２及び耐火ボード１５と縦枠部材１３１は接触しているだけであり、耐火ボード１５の荷重が横枠部材１３２や縦枠部材１３１にかからないように構造的には切り離されている。   A fireproof board 15 is provided between the end face of the housing 14 and the spandrel member 121. The refractory board 15 is a plate material that is not easily deformed by a flame or heat at the time of a fire and is not easily destroyed. The upper end of the fireproof board 15 is located above the upper surface of the housing 14, and the lower end of the fireproof board 15 is located below the lower surface of the housing 14. The fireproof board 15 is disposed so as to face the spandrel member 121, and a space 16 is provided between the fireproof board 15 and the spandrel member 121. Long ends (upper end and lower end) of the fireproof board 15 in the horizontal direction are connected to the horizontal frame member 132. Long ends (left end portion and right end portion) of the fireproof board 15 in the vertical direction are connected to the vertical frame member 131. Note that the fireproof board 15 and the horizontal frame member 132 and the fireproof board 15 and the vertical frame member 131 are merely in contact with each other, and the load of the fireproof board 15 is structurally prevented from being applied to the horizontal frame member 132 and the vertical frame member 131. Are disconnected.

図３Ａ、図３Ｂ及び図３Ｃのように、耐火ボード１５は、二枚の金属外皮１５１、１５２の間に芯材１５７を有するサンドイッチパネルである。金属外皮１５１、１５２は金属板をロール成形などで成形して形成される。金属板としては、亜鉛めっき鋼板、ガルバリウム鋼板（登録商標）、エスジーエル(登録商標)鋼板、塗装鋼板などが用いられる。金属外皮１５１の板厚と金属外皮１５２の板厚は同じであっても異なっていてもよく、例えば、０．３〜１．５ｍｍである。金属外皮１５１、１５２は正面視で矩形状の平面部１５３、１５４と、平面部１５３、１５４の周端部に突出する連結片１５５、１５６とを備えて形成されている。連結片１５５、１５６と平面部１５３、１５４の間の角度はほぼ直角に形成されている。   As shown in FIGS. 3A, 3B, and 3C, the fireproof board 15 is a sandwich panel having a core member 157 between two metal shells 151 and 152. The metal shells 151 and 152 are formed by forming a metal plate by roll forming or the like. As the metal plate, galvanized steel plate, Galvalume steel plate (registered trademark), SGL (registered trademark) steel plate, painted steel plate, or the like is used. The plate thickness of the metal shell 151 and the plate thickness of the metal shell 152 may be the same or different, for example, 0.3 to 1.5 mm. The metal shells 151 and 152 are formed by including rectangular flat portions 153 and 154 in front view and connecting pieces 155 and 156 protruding from the peripheral ends of the flat portions 153 and 154. The angles between the connecting pieces 155 and 156 and the flat portions 153 and 154 are formed substantially at right angles.

芯材１５７は断熱部１５８と耐火部１５９とを有して形成されている。断熱部１５８と耐火部１５９はそれぞれ板状に形成されている。また断熱部１５８と耐火部１５９は耐火ボード１５の厚み方向に重ね合って接着されている。断熱部１５８は耐火部１５９よりも断熱性が高い部分であって、例えば、ロックウールやグラスウールなどの無機繊維材料、ウレタンフォームやフェノールフォームなどの樹脂発泡材料で形成されている。耐火部１５９は断熱部１５８よりも耐火性の高い部分であって、石膏ボードや珪酸カルシウム板などで形成されている。   The core material 157 has a heat insulating part 158 and a fireproof part 159. The heat insulation part 158 and the fireproof part 159 are each formed in a plate shape. Further, the heat insulating portion 158 and the fireproof portion 159 are overlapped and bonded in the thickness direction of the fireproof board 15. The heat insulation part 158 is a part having higher heat insulation than the fireproof part 159, and is formed of, for example, an inorganic fiber material such as rock wool or glass wool, or a resin foam material such as urethane foam or phenol foam. The fireproof part 159 is a part having higher fire resistance than the heat insulating part 158, and is formed of a gypsum board or a calcium silicate board.

芯材１５７は、平面部１５３、１５４と連結片１５５、１５６とで囲まれる空間に充填されている。金属外皮１５１の平面部１５３の片面と芯材１５７の片面（断熱部１５８の表面）とは接着されている。また金属外皮１５２の平面部１５４の片面と芯材１５７の片面（耐火部１５９の表面）とは接着されている。また金属外皮１５１と金属外皮１５２とは複数の結合板１６０で連結されている。各結合板１６０は連結片１５５と連結片１５６の両方にビス等の固定具１６１で固定されている。結合板１６０は耐火ボード１５の周端部の複数の箇所に設けられている。   The core material 157 is filled in a space surrounded by the flat portions 153 and 154 and the connecting pieces 155 and 156. One side of the flat portion 153 of the metal outer cover 151 and one side of the core member 157 (the surface of the heat insulating portion 158) are bonded. In addition, one side of the flat portion 154 of the metal shell 152 and one side of the core member 157 (the surface of the fireproof portion 159) are bonded. The metal skin 151 and the metal skin 152 are connected by a plurality of connecting plates 160. Each coupling plate 160 is fixed to both the connecting piece 155 and the connecting piece 156 with a fixing tool 161 such as a screw. The coupling plate 160 is provided at a plurality of locations on the peripheral end portion of the fireproof board 15.

図４Ａ及び図４Ｂ並びに図５Ａ及び図５Ｂに示すように、耐火ボード１５は取付具１７により躯体１４に取り付けられる。取付具１７は躯体取付具１７１とボード取付具１７２とで構成されている。躯体取付具１７１は形鋼（型鋼）であって、平板状の固定片１７３と平板状の支持片１７４とを備えている。支持片１７４は固定片１７３の前端（屋外側端部）から上方に突出して形成されており、支持片１７４と固定片１７３とで略Ｌ字状に形成されている。固定片１７３と支持片１７４との間には補強片１７５が設けられている。また支持片１７４には厚み方向に貫通する複数の差し込み孔１８５が設けられている。差し込み孔１８５は補強片１７５の両側に一個ずつ形成されている。   As shown in FIGS. 4A and 4B and FIGS. 5A and 5B, the fireproof board 15 is attached to the housing 14 by a fixture 17. The fixture 17 includes a frame fixture 171 and a board fixture 172. The frame fixture 171 is a section steel (die steel), and includes a flat plate-like fixing piece 173 and a flat plate-like support piece 174. The support piece 174 is formed to protrude upward from the front end (outdoor side end portion) of the fixed piece 173, and the support piece 174 and the fixed piece 173 are formed in a substantially L shape. A reinforcing piece 175 is provided between the fixed piece 173 and the support piece 174. The support piece 174 is provided with a plurality of insertion holes 185 penetrating in the thickness direction. One insertion hole 185 is formed on each side of the reinforcing piece 175.

躯体１４は、コンクリート部１４０の前端にＬ型鋼などの基台部材１４１を設けて形成されている。基台部材１４１の上面は躯体１４の上面に露出している。躯体取付具１７１の固定片１７３はボルトナット等の固定具１７６で基台部材１４１の上面に固定され、これにより、躯体取付具１７１が躯体１４に取り付けられる。躯体１４には複数の躯体取付具１７１が横方向に並べて取り付けられる。各躯体取付具１７１の支持片１７４は躯体１４の外側端面よりも外側（屋外側）に突出した状態になっている。   The casing 14 is formed by providing a base member 141 such as L-shaped steel at the front end of the concrete portion 140. The upper surface of the base member 141 is exposed on the upper surface of the housing 14. The fixing piece 173 of the housing fixture 171 is fixed to the upper surface of the base member 141 by a fixture 176 such as a bolt and nut, whereby the housing fixture 171 is attached to the housing 14. A plurality of housing fixtures 171 are attached to the housing 14 in the horizontal direction. The support piece 174 of each housing fixture 171 is in a state of protruding outward (outside) from the outer end surface of the housing 14.

ボード取付具１７２は金物であって、図６Ａ、図６Ｂ及び図６Ｃのように、平板状の正面結合片１７７と側面結合片１７８とを備えている。側面結合片１７８は正面結合片１７７の一方の側端部から前方に突出して形成されており、ボード取付具１７２は略Ｌ字状に形成されている。正面結合片１７７には複数の突起部１７９が設けられている。複数の突起部１７９は横方向に並べて設けられている。各突起部１７９にはその前端と後端（正面結合片１７７の表面）とに開口するネジ孔１８０が形成されている。また正面結合片１７７と側面結合片１７８には厚み方向に貫通する複数の固定孔１８１が設けられている。   The board fixture 172 is a hardware, and includes a flat front coupling piece 177 and a side coupling piece 178 as shown in FIGS. 6A, 6B, and 6C. The side coupling piece 178 is formed to project forward from one side end of the front coupling piece 177, and the board fixture 172 is formed in a substantially L shape. The front coupling piece 177 is provided with a plurality of protrusions 179. The plurality of protrusions 179 are arranged in the horizontal direction. Each projection 179 is formed with a screw hole 180 that opens to the front end and the rear end (surface of the front coupling piece 177). The front coupling piece 177 and the side coupling piece 178 are provided with a plurality of fixing holes 181 penetrating in the thickness direction.

図７Ａのように、ボード取付具１７２は耐火ボード１５の左右端部に一つずつ取り付けられる。この場合、耐火ボード１５には複数の挿入孔１６５が形成されている。挿入孔１６５は二個を一組として、耐火ボード１５の左右端部に一組ずつ設けられている。複数の挿入孔１６５は横方向に並べて設けられている。挿入孔１６５は一方の金属外皮１５２の表面に開口している。また挿入孔１６５は芯材１５７の耐火部１５９にまで達するように形成されている。挿入孔１６５は断熱部１５８まで達してもよいが、他方の金属外皮１５１にまでは達しないように形成されている。これにより、他方の金属外皮１５１に挿入孔１６５の開口が形成されず、耐火ボード１５の外観低下を抑制することができる。   As shown in FIG. 7A, the board fixtures 172 are attached to the left and right ends of the fireproof board 15 one by one. In this case, a plurality of insertion holes 165 are formed in the fireproof board 15. The two insertion holes 165 are provided as a set at the left and right ends of the fireproof board 15. The plurality of insertion holes 165 are provided side by side in the horizontal direction. The insertion hole 165 opens on the surface of one metal skin 152. The insertion hole 165 is formed to reach the fireproof part 159 of the core member 157. The insertion hole 165 may reach the heat insulating portion 158, but is formed so as not to reach the other metal skin 151. Thereby, the opening of the insertion hole 165 is not formed in the other metal shell 151, and the appearance deterioration of the fireproof board 15 can be suppressed.

正面結合片１７７は一方の金属外皮１５２の平面部１５４に固着される。この場合、突起部１７９が挿入孔１６５に差し込まれ、正面結合片１７７は平面部１５４の表面に沿わせて配置される。そして、正面結合片１７７の固定孔１８１から平面部１５４にまでビスやリベット等の固定具が打ち込まれる。側面結合片１７８は耐火ボード１５の側面の連結片１５５、１５６に固着される。この場合、側面結合片１７８は連結片１５５、１５６の表面に沿わせて配置される。そして、側面結合片１７８の固定孔１８１から連結片１５５、１５６にまでビスやリベット等の固定具が打ち込まれる。   The front coupling piece 177 is fixed to the flat portion 154 of one metal skin 152. In this case, the protruding portion 179 is inserted into the insertion hole 165, and the front coupling piece 177 is arranged along the surface of the flat portion 154. Then, a fixing tool such as a screw or a rivet is driven from the fixing hole 181 of the front coupling piece 177 into the flat surface portion 154. The side coupling pieces 178 are fixed to the connection pieces 155 and 156 on the side surfaces of the fireproof board 15. In this case, the side coupling pieces 178 are arranged along the surfaces of the coupling pieces 155 and 156. Then, a fixing tool such as a screw or a rivet is driven from the fixing hole 181 of the side coupling piece 178 to the connecting pieces 155 and 156.

耐火ボード１５を躯体１４に取り付けるにあたっては、躯体１４に取り付けた躯体取付具１７１の支持片１７４の外面（屋外側を向く表面）に、耐火ボード１５に取り付けたボード取付具１７２の正面結合片１７７の外面（屋内側を向く表面）を接触させ、ボルト等の固定具１８６を躯体取付具１７１の差し込み孔１８５に支持片１７４の屋内側から差し込んでボード取付具１７２のネジ孔１８０に締結する。このようにして複数の耐火ボード１５が横方向に並べて躯体１４に取り付けられる。   In attaching the fireproof board 15 to the housing 14, the front coupling piece 177 of the board fixture 172 attached to the fireproof board 15 is provided on the outer surface (surface facing the outdoor side) of the support piece 174 of the housing fixture 171 attached to the housing 14. The fixing member 186 such as a bolt is inserted into the insertion hole 185 of the housing attachment 171 from the indoor side of the support piece 174 and fastened to the screw hole 180 of the board attachment 172. In this manner, the plurality of fireproof boards 15 are attached to the housing 14 in the horizontal direction.

図２及び図８に示すように、耐火ボード１５は押さえ部材２０により枠部材１３に連結されている。押さえ部材２０は前押さえ部材２０１と後押さえ部材２０２とで構成されている。前押さえ部材２０１と後押さえ部材２０２とは正面視で四角枠状に形成され、断面略Ｌ字状に形成されている。前押さえ部材２０１と後押さえ部材２０２とはスパンドレル部１２において枠部材１３にビス等の固定具３０で固定されている。前押さえ部材２０１と後押さえ部材２０２とは、前後方向で対向するように配置されている。そして、前押さえ部材２０１と後押さえ部材２０２により耐火ボード１５の上端部及び下端部並びに側端部が前後から挟まれ、耐火ボード１５が枠部材１３に接続される。   As shown in FIGS. 2 and 8, the fireproof board 15 is connected to the frame member 13 by a pressing member 20. The pressing member 20 includes a front pressing member 201 and a rear pressing member 202. The front pressing member 201 and the rear pressing member 202 are formed in a square frame shape when viewed from the front, and have a substantially L-shaped cross section. The front pressing member 201 and the rear pressing member 202 are fixed to the frame member 13 by a fixing tool 30 such as a screw in the spandrel portion 12. The front pressing member 201 and the rear pressing member 202 are arranged to face each other in the front-rear direction. The upper and lower ends and the side ends of the fireproof board 15 are sandwiched from the front and rear by the front presser member 201 and the rear presser member 202, and the fireproof board 15 is connected to the frame member 13.

また、耐火ボード１５の前側（屋外側）にはスパンドレル部材１２１が設けられている。スパンドレル部材１２１は押縁２１により枠部材１３に連結されている。押縁２１は正面視で四角枠状に形成され、断面略Ｌ字状に形成されている。押縁２１はスパンドレル部１２において枠部材１３の前端に係合により固定されている。押縁２１にはガスケット２２が設けられており、このガスケット２２がスパンドレル部材１２１の表面（屋外側面）に接触している。枠部材１３にはバックアップ材２３が設けられており、ガスケット２２とバックアップ材２３とでスパンドレル部材１２１の周端部が挟み込まれる。これにより、スパンドレル部材１２１は枠部材１３に保持されている。   In addition, a spandrel member 121 is provided on the front side (outdoor side) of the fireproof board 15. The spandrel member 121 is connected to the frame member 13 by the pressing edge 21. The pressing edge 21 is formed in a square frame shape when viewed from the front, and has a substantially L-shaped cross section. The pressing edge 21 is fixed to the front end of the frame member 13 in the spandrel portion 12 by engagement. The pressing edge 21 is provided with a gasket 22, and the gasket 22 is in contact with the surface (outside side surface) of the spandrel member 121. The frame member 13 is provided with a backup material 23, and the peripheral end portion of the spandrel member 121 is sandwiched between the gasket 22 and the backup material 23. Thereby, the spandrel member 121 is held by the frame member 13.

スパンドレル部１２において、耐火ボード１５とスパンドレル部材１２１との間には空間１６が設けられている。この空間１６は耐火ボード１５とスパンドレル部材１２１と枠部材１３（横枠部材１３２と縦枠部材１３１）とで囲まれており、空間１６はほとんど通気しない（空気の流れがない）状態である。このような閉鎖された空間１６では空気の流れがほとんどないため結露が生じやすい。特に、耐火ボード１５が透湿性の高い珪酸カルシウム板などである場合、耐火ボード１５よりも屋内の湿気が耐火ボード１５を通過して空間１６に湿気が浸入し、スパンドレル部材１２１の表面で結露が生じやすく、スパンドレル部材１２１がガラス板である場合には曇るおそれがある。一方、本実施の形態では、耐火ボード１５が二枚の金属外皮１５１、１５２の間に芯材１５７を有するサンドイッチパネルで形成されているため、金属外皮１５１、１５２が湿気を通しにくく、耐火ボード１５の透湿性が低くなり、耐火ボード１５よりも屋内の湿気が耐火ボード１５を通過しにくくて空間１６に湿気が浸入しにくい。従って、空間１６で結露が生じにくくなる。なお、本実施の形態では、多少の結露が生じる場合もあるため、枠部材１３の下の横枠部材１３２には上下に貫通する排水孔１３４が形成されている。耐火ボード１５の透湿性能は透湿抵抗で示すことができる。透湿抵抗は、水蒸気の通しにくさを表した性能値であり、値が大きいほど湿気を通しにくい。透湿抵抗の単位は、ｍ２・ｈ・ｍｍＨｇ／ｇで、１ｍ２当たりで１時間当たりに１ｇの水分を通すのに必要な気圧差を示す。繊維混入珪酸カルシウム板（厚み２４．７ｍｍ）で透湿抵抗０．９８８ｍ２・ｈ・ｍｍＨｇ／ｇ、石膏ボード（厚み１２ｍｍ）で透湿抵抗０．６３ｍ２・ｈ・ｍｍＨｇ／ｇ、ロックウールボード（天井板、厚み１２．５ｍｍ）で透湿抵抗４．４ｍ２・ｈ・ｍｍＨｇ／ｇ、合板（厚み１２．０ｍｍ）で透湿抵抗２３ｍ２・ｈ・ｍｍＨｇ／ｇであるが、二枚の金属外皮の間に芯材を有するサンドイッチパネルは、金属外皮が水分を通さないため、透湿抵抗が１．２８９×１０１０ｍ２・ｈ・ｍｍＨｇ／ｇである（ガラスや鉄板とほぼ同じ値であって、ほぼ無限大である）。 In the spandrel portion 12, a space 16 is provided between the fireproof board 15 and the spandrel member 121. The space 16 is surrounded by the fireproof board 15, the spandrel member 121, and the frame member 13 (the horizontal frame member 132 and the vertical frame member 131), and the space 16 is in a state of being hardly vented (no air flow). In such a closed space 16, there is almost no air flow, so condensation is likely to occur. In particular, when the fireproof board 15 is a highly permeable calcium silicate board or the like, indoor moisture passes through the fireproof board 15 than the fireproof board 15 and moisture enters the space 16, and condensation forms on the surface of the spandrel member 121. If the spandrel member 121 is a glass plate, it may be cloudy. On the other hand, in the present embodiment, since the fireproof board 15 is formed of a sandwich panel having a core material 157 between the two metal skins 151 and 152, it is difficult for the metal skins 151 and 152 to pass moisture. The moisture permeability of 15 is lower, and indoor moisture is less likely to pass through the refractory board 15 than the refractory board 15, and moisture is less likely to enter the space 16. Accordingly, condensation is less likely to occur in the space 16. In this embodiment, since some condensation may occur, the horizontal frame member 132 below the frame member 13 is formed with a drain hole 134 penetrating vertically. The moisture permeation performance of the refractory board 15 can be shown by moisture permeation resistance. The moisture permeability resistance is a performance value representing the difficulty of passing water vapor, and the larger the value is, the more difficult it is to pass moisture. The unit of moisture permeation resistance is m 2 · h · mmHg / g, and indicates a pressure difference required to pass 1 g of moisture per 1 m 2 per hour. Fiber mixed calcium silicate board (thickness 24.7mm) with moisture permeability of 0.988m 2 · h · mmHg / g, gypsum board (thickness 12mm) with moisture permeability of 0.63m 2 · h · mmHg / g, rock wool board (Ceiling board, thickness 12.5 mm) moisture permeability resistance 4.4 m 2 · h · mmHg / g, plywood (thickness 12.0 mm) moisture permeability resistance 23 m 2 · h · mmHg / g, A sandwich panel having a core material between metal shells has a moisture permeability of 1.289 × 10 10 m 2 · h · mmHg / g because the metal shell does not allow moisture to pass through (almost the same value as glass or iron plate). And almost infinite).

また前押さえ部材２０１には緩衝材（パッキン等）３５が設けられている。緩衝材３５としては合成ゴムが用いられる。緩衝材３５は前押さえ部材２０１が耐火ボード１５の金属外皮１５１と接触しにくくするものである。緩衝材３５は金属外皮１５１に近接する前押さえ部材２０１の表面などに設けるのが好ましい。これにより、金属外皮１５１と前押さえ部材２０１の間に緩衝材３５が介在することになり、金属外皮１５１と前押さえ部材２０１とが接触しにくくなる。従って、耐火ボード１５と前押さえ部材２０１とが擦れ合うことを低減することができ、音鳴りの発生を低減することができる。ここで、耐火ボード１５と前押さえ部材２０１の擦れ合いは、例えば、耐火ボード１５や前押さえ部材２０１が熱伸縮した場合に、両者の伸縮度合い差によって発生する。オフィスビル等の静かな建物で、耐火ボード１５と前押さえ部材２０１の擦れ合いによる金属音の音鳴りが発生すると、非常に耳障りであるが、本実施の形態では、このような音鳴りを低減することができる。なお、耐火ボード１５の金属外皮１５１、１５２と枠部材１３とが接触しないように、緩衝材を適宜の箇所に設けてもよい。また緩衝材３５により空間１６は空気の流れがほとんどない状態が確保される。   Further, the front pressing member 201 is provided with a cushioning material (packing or the like) 35. Synthetic rubber is used as the buffer material 35. The cushioning material 35 makes the front pressing member 201 difficult to come into contact with the metal skin 151 of the fireproof board 15. The cushioning material 35 is preferably provided on the surface of the front pressing member 201 adjacent to the metal skin 151. Thereby, the buffer material 35 is interposed between the metal outer cover 151 and the front pressing member 201, and the metal outer cover 151 and the front pressing member 201 are less likely to contact each other. Accordingly, it is possible to reduce the friction between the fireproof board 15 and the front pressing member 201 and to reduce the generation of noise. Here, rubbing between the fireproof board 15 and the front pressing member 201 occurs, for example, when the fireproof board 15 and the front pressing member 201 are thermally expanded or contracted due to a difference in expansion / contraction degree between the two. In a quiet building such as an office building, if a metal sound is generated due to friction between the fireproof board 15 and the front pressing member 201, it is very harsh, but in this embodiment, such a sound is reduced. can do. In addition, you may provide a buffer material in a suitable location so that the metal shells 151 and 152 of the fireproof board 15 and the frame member 13 may not contact. Further, the buffer material 35 ensures that the space 16 has almost no air flow.

１０ カーテンウォール
１２１ スパンドレル部材
１５ 耐火ボード
１３ 枠部材
１６ 空間
１５１ 金属外皮
１５２ 金属外皮
１５７ 芯材 DESCRIPTION OF SYMBOLS 10 Curtain wall 121 Spandrel member 15 Fireproof board 13 Frame member 16 Space 151 Metal skin 152 Metal skin 157 Core material

Claims (2)

スパンドレル部材と、耐火ボードとを備え、前記スパンドレル部材と前記耐火ボードは対向しており、前記スパンドレル部材と前記耐火ボードとの間には空間が形成されたカーテンウォールであって、
前記耐火ボードは二枚の金属外皮の間に芯材を有するサンドイッチパネルであることを特徴とするカーテンウォール。 A spandrel member and a fireproof board, the spandrel member and the fireproof board are opposed to each other, a curtain wall in which a space is formed between the spandrel member and the fireproof board,
A curtain wall characterized in that the fireproof board is a sandwich panel having a core material between two metal shells. 前記スパンドレル部材を保持する枠部材を備え、前記耐火ボードと前記枠部材との間に音鳴りの低減を図るための緩衝材を備えていることを特徴とする請求項１に記載のカーテンウォール。
The curtain wall according to claim 1, further comprising: a frame member that holds the spandrel member, and a cushioning material for reducing sound noise between the fireproof board and the frame member.
JP2016055081A 2016-03-18 2016-03-18 Curtain wall Pending JP2017166283A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020148051A (en) * 2019-03-14 2020-09-17 日鉄鋼板株式会社 Building panel, building panel unit, mounting structure of building panel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010090529A (en) * 2008-10-03 2010-04-22 Mitsubishi Jisho Sekkei Inc Curtain wall
JP2013014997A (en) * 2011-07-06 2013-01-24 Nippon Steel & Sumikin Coated Sheet Corp Fireproof panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010090529A (en) * 2008-10-03 2010-04-22 Mitsubishi Jisho Sekkei Inc Curtain wall
JP2013014997A (en) * 2011-07-06 2013-01-24 Nippon Steel & Sumikin Coated Sheet Corp Fireproof panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020148051A (en) * 2019-03-14 2020-09-17 日鉄鋼板株式会社 Building panel, building panel unit, mounting structure of building panel
JP7273553B2 (en) 2019-03-14 2023-05-15 日鉄鋼板株式会社 Building panel, building panel unit, mounting structure of building panel

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