JP2016094790A - Fireproof structure of outer wall panel joint - Google Patents

Fireproof structure of outer wall panel joint Download PDF

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JP2016094790A
JP2016094790A JP2014232665A JP2014232665A JP2016094790A JP 2016094790 A JP2016094790 A JP 2016094790A JP 2014232665 A JP2014232665 A JP 2014232665A JP 2014232665 A JP2014232665 A JP 2014232665A JP 2016094790 A JP2016094790 A JP 2016094790A
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wall panel
joint
wall
heat insulating
insulating material
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JP6511252B2 (en
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智美 添田
Tomomi Soeda
智美 添田
義人 有馬
Yoshito Arima
義人 有馬
仁 佐々木
Hitoshi Sasaki
仁 佐々木
栄紀 鴨下
Yoshinori Kamoshita
栄紀 鴨下
大輔 桂
Daisuke Katsura
大輔 桂
洋輔 小濱
Yosuke Kohama
洋輔 小濱
昌信 宮田
Masanobu Miyata
昌信 宮田
賢悟 山本
Kengo Yamamoto
賢悟 山本
秀俊 橘
Hidetoshi Tachibana
秀俊 橘
純 谷口
Jun Taniguchi
純 谷口
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Fujita Corp
Daiwa House Industry Co Ltd
Nippon Steel Coated Sheet Corp
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Fujita Corp
Daiwa House Industry Co Ltd
Nippon Steel and Sumikin Coated Sheet Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a fireproof structure of an outer wall panel joint in which the settling construction of a vertical joint of an outer wall panel and the installation of the outer wall panel can be constructed from the inside of the building, no-scaffolding construction becomes possible, the reduction of a construction period and cost can be expected, and fire resistance and water-tightness can be secured.SOLUTION: Two or more outer wall panels 22 arranged vertically are mounted to two or more furring strips 23 extending in the vertical direction at two or more places in the width direction of the back sides of the outer wall panels 22 to thereby form an outer wall panel unit 21. The outer wall panel units 21 are arranged in the panel width direction, and a joint fireproof structure of a vertical joint 35 between laterally adjacent outer wall panels 22, 22 in an outer wall is formed by multiple installations in a building structure. Each outer wall panel unit 21 has the side edge of the outer wall panel 22 laterally extended from the furring strip 23. A non-combustible insulation material 38 is disposed in the back side astride the vertical joint 35 between the outer wall panels 22, 22 in the laterally adjacent outer wall panel units 21, and sealing members 36, 37 are interposed in the vertical joint 35.SELECTED DRAWING: Figure 1

Description

この発明は、物流施設等の鉄骨系建物等において、隣り合う外壁パネル間の縦目地を耐火構造とする外壁パネル目地部耐火構造に関する。   The present invention relates to an outer wall panel joint fireproof structure in which a vertical joint between adjacent outer wall panels is made into a fireproof structure in a steel frame building or the like such as a logistics facility.

物流施設、コンビニエンスストア等の建物の外壁において、ロックウールなどの不燃断熱材を鋼板で挟み込んだ金属サンドイッチ構造の外壁パネルを、上下に複数枚並べて構築するものがある。このような外壁を施工するのに、従来は、スラブや柱，梁等からなる建物躯体に、下地となる胴縁を先行して取付け、この胴縁に前記複数枚の外壁パネルを取り付けている。この先行して取り付けられた胴縁にパネルを縫いつけるために、外部から直接作業のできる足場を、建物躯体のパネル取付け面に設置する。   Some of the outer walls of buildings such as logistics facilities and convenience stores are constructed by arranging a plurality of outer wall panels with a metal sandwich structure in which non-combustible heat insulating materials such as rock wool are sandwiched between steel plates. In order to construct such an outer wall, conventionally, a base body edge is first attached to a building frame made of slabs, columns, beams, etc., and the plurality of outer wall panels are attached to the body edge. . In order to sew the panel to the previously attached trunk edge, a scaffold that can be directly operated from the outside is installed on the panel mounting surface of the building frame.

従来工法のパネル端部の納まりを図１３に示す。外壁パネル４２の表面を構成する鋼板４８の端部に折り曲げ片４８ａを設け（同図（Ａ））、この折り曲げ片４８ａを目地部で隣り合う外壁パネル４２，４２の折り曲げ片４８ａと重ね合わせ（同図（Ｂ））、それらを外壁パネル４２の目地芯に設置した角形の胴縁４３にタッピングビス等のビス５１で留め付ける。ビス留めされた外壁パネル４２の目地部分は、その上からシーリング材５６を充填することで防水する。また、それぞれの外壁パネル４２，４２も角形の胴縁４３にタッピングビス等のビス５０で縫い付ける（同図（Ｃ））。   FIG. 13 shows the accommodation of the panel end of the conventional method. A bent piece 48a is provided at the end of the steel plate 48 constituting the surface of the outer wall panel 42 (FIG. 1A), and the bent piece 48a is overlapped with the bent pieces 48a of the adjacent outer wall panels 42, 42 at the joint ( (B)) and fastened them with a screw 51 such as a tapping screw on a square trunk edge 43 installed on the joint core of the outer wall panel 42. The joint portion of the screwed outer wall panel 42 is waterproofed by filling the sealing material 56 from above. Each of the outer wall panels 42 and 42 is also sewn to the square body edge 43 with a screw 50 such as a tapping screw (FIG. 3C).

外壁パネル４２は、表裏の鋼板４８，４８間に不燃断熱材（図示せず）を挟み込んだ金属サンドイッチパネルであり、端部に石膏ボード４４を取り付け、鋼板４８は、詳しくは同図（Ｄ）のように一部４８ｂを内側に折り返している作りとなっている。目地内部には，セラミックファイバー４５を設置して、石こうボード４４の耐火効果と共に耐火性の
確保に寄与している。 The outer wall panel 42 is a metal sandwich panel in which a non-combustible heat insulating material (not shown) is sandwiched between the front and back steel plates 48, 48, and a gypsum board 44 is attached to the end. The steel plate 48 is shown in detail in FIG. In this way, a part 48b is folded back inward. Inside the joint, a ceramic fiber 45 is installed to contribute to securing fire resistance as well as the fire resistance effect of the gypsum board 44.

特許第３５５０３０４号公報Japanese Patent No. 3550304

上記従来の外壁構造では、外壁パネル４２の取付けのためには、足場（図示せず）の設置が必要であった。そのため、パネル取り付け施工のために足場に影響する工事、例えば外構工事などが滞留するなどの問題があった。また、外壁パネル４２を１枚ずつ吊り上げ、建物躯体の胴縁４３に取付けるので、手間がかかり、これによっても工期が長くなるという問題があった。
ここで、建物の内部からでも取り付け作業が可能な様に外壁パネル４２の端部の納まりおよび胴縁４３の納まりを案出した。その案によると、外壁パネル４２の目地部の納まりを建物内部で施工できるため、足場設置の軽減が期待できる。 In the conventional outer wall structure described above, installation of a scaffold (not shown) is necessary for mounting the outer wall panel 42. For this reason, there has been a problem that work that affects the scaffolding for panel installation work, for example, exterior work or the like stays. Moreover, since the outer wall panels 42 are lifted one by one and attached to the body edge 43 of the building frame, there is a problem that it takes time and this also increases the construction period.
Here, the accommodation of the end part of the outer wall panel 42 and the accommodation of the trunk edge 43 were devised so that the attachment work can be performed even from the inside of the building. According to the plan, since the joint of the outer wall panel 42 can be constructed inside the building, it can be expected to reduce the installation of the scaffold.

外壁パネル４２からなる外壁に必要な性能の一つとして、耐火性能が上げられる。従来の外壁パネルの目地構造は、耐火性能と水密性能を目地内部で両立させるために、図１３の例のようにシーリング材５６を外部施工とし、目地内部には石膏ボード４４やセラミックファイバー４５などを配置している。   As one of the performances required for the outer wall composed of the outer wall panel 42, fire resistance is improved. In the conventional joint structure of the outer wall panel, in order to achieve both fire resistance and water tightness inside the joint, the sealing material 56 is externally constructed as shown in the example of FIG. 13, and the plaster board 44, ceramic fiber 45, etc. are provided inside the joint. Is arranged.

しかし、無足場施工を可能とするには，外部からのシーリング材５６の工事をなくす必要がある。ここで問題となるのは，シーリング材５６を無くす手法としてガスケット（図示せず）を利用した重複シール工法やオープンジョイント工法が上げられるが、これらの工法を取るのに十分なスペースが確保し難い。   However, it is necessary to eliminate the construction of the sealing material 56 from the outside in order to enable construction without scaffolding. The problem here is that, as a method of eliminating the sealing material 56, there are an overlap seal method and an open joint method using a gasket (not shown), but it is difficult to secure a sufficient space for these methods. .

この発明の目的は、外壁パネルの建物躯体への取り付け、および外壁パネルの縦目地の納まり工事の両方につき、建物の内部から施工出来て、無足場施工が可能となり、工期および費用の削減が期待でき、かつ耐火性および水密性が確保できる外壁パネル目地部耐火構造を提供することである。   The object of the present invention is that both the installation of the outer wall panel to the building frame and the installation work of the vertical joint of the outer wall panel can be performed from the inside of the building, which can be constructed without scaffolding, and the construction period and cost are expected to be reduced. It is possible to provide an outer wall panel joint fireproof structure capable of ensuring fire resistance and water tightness.

この発明の外壁パネル目地部耐火構造は、上下方向に並ぶ複数枚の耐火性の外壁パネルを、この外壁パネルの裏面の横幅方向の複数箇所で上下方向に延びる複数本の胴縁に取付けて外壁パネルユニットとし、この外壁パネルユニットをパネル幅方向に並べて建物躯体に複数設置してなる外壁における左右に隣り合う外壁パネル間の縦目地の目地部耐火構造であって、
前記各外壁パネルユニットは、前記外壁パネルの側縁が前記胴縁から側方に延出し、前記左右に隣り合う外壁パネルユニットにおける前記外壁パネルの間の縦目地に跨がって裏面に不燃断熱材を配置し、前記縦目地内に密封部材を介在させたことを特徴とする。 According to the outer wall panel joint fireproof structure of the present invention, a plurality of fireproof outer wall panels arranged in the vertical direction are attached to a plurality of trunk edges extending in the vertical direction at a plurality of positions in the width direction on the back surface of the outer wall panel. As a panel unit, a vertical joint joint fireproof structure between the outer wall panels adjacent to the left and right in the outer wall formed by arranging a plurality of this outer wall panel unit in the building frame side by side in the panel width direction,
Each outer wall panel unit has a side edge of the outer wall panel extending laterally from the trunk edge and spans a vertical joint between the outer wall panels in the outer wall panel unit adjacent to the left and right, and a nonflammable heat insulation on the back surface. A material is disposed, and a sealing member is interposed in the vertical joint.

この構成によると、複数枚の外壁パネルを胴縁と一体化させて外壁パネルユニットとしており、外壁パネルユニットの胴縁を建物躯体に取付ける作業は、建物躯体内のスラブや梁上等から行えるため、外壁パネルの建物躯体への取付作業を行うにつき、従来は必要であった建物躯体の外周の足場が不要になる。
また、水密性と耐火性を両立させるについて、無理に目地内で耐火性を確保しようとせずに、外壁パネルの間の縦目地に跨がって室内側に不燃断熱材を配置し、縦目地内に密封部材をのみを介在させている。そのため、縦目地の耐火性能の確保については、室内側からの不燃断熱材の後施工として、縦目地内部は水密性の確保に特化し、水密性と耐火性を両立させることができる。縦目地が水密性の確保に特化できることから、縦目地内にガスケットやオープンジョイント工法を採るスペースが十分に得られ、屋外側からの水密施工を不要にできる。 According to this configuration, a plurality of outer wall panels are integrated with the body edge to form an outer wall panel unit, and the work of attaching the outer wall panel unit body edge to the building frame can be performed from the slab or beam on the building frame. When the outer wall panel is attached to the building frame, the scaffolding on the outer periphery of the building frame, which was necessary in the past, is no longer necessary.
Also, in order to achieve both watertightness and fire resistance, the fireproof material is arranged on the indoor side across the vertical joint between the outer wall panels without forcibly ensuring fire resistance in the joint. Only the sealing member is interposed in the ground. Therefore, with regard to ensuring the fire resistance of the vertical joints, the interior of the vertical joints can be specialized to ensure water tightness as post-installation of non-combustible heat insulating material from the indoor side, and both water tightness and fire resistance can be achieved. Since the vertical joint can be specialized for ensuring watertightness, a sufficient space for using a gasket or an open joint method can be obtained in the vertical joint, and watertight construction from the outdoor side can be eliminated.

このように、外壁パネルの建物躯体への取付作業と、縦目地の耐火性能確保との両方の点で、無足場施工が可能となる。そのため、工期および費用の削減が期待できる。また、これまで外部足場の撤去時期に影響していた工事、例えば外構工事などの工事の早期着手ができることで、全体工期の短縮が期待できる。また、内部施工とすることで作業環境と作業性能の効率化が見込めるため人員コストの削減も期待できる。
胴縁から外壁パネルの側縁が延出する形としているが、不燃断熱材により目地を覆うようにしているため、仮に火災を受けた際にも、外壁パネルの縦目地間の開きによる火炎の流出入を防ぐことができ、耐火性にも優れる。縦目地内部は水密性の確保に特化できるため、水密性にも優れる。
さらに、地組等により外壁パネルと下地胴縁とを一体化させることで大判化させて外壁に取り付ける工法となるため、個々の外壁パネルを１枚ずつ建物躯体に取付ける従来の外壁パネル取付け構造に比べて効率良く施工でき、この面でも省力化、短工期化が可能になる。 In this way, the scaffold construction can be performed in terms of both the work of attaching the outer wall panel to the building frame and securing the fire resistance of the vertical joint. Therefore, the construction period and cost can be reduced. In addition, it is possible to shorten the overall construction period by enabling the early start of the construction that has affected the removal timing of the external scaffold, for example, external construction. In addition, since internal work can be expected to improve the work environment and work performance, personnel costs can be reduced.
The side edges of the outer wall panel extend from the trunk edge, but the joints are covered with non-combustible heat insulating material, so even if a fire occurs, the flame caused by the opening between the vertical joints of the outer wall panels Inflow and outflow can be prevented and fire resistance is excellent. Since the inside of the vertical joint can be specialized for ensuring watertightness, it also has excellent watertightness.
In addition, since the outer wall panel and the base trunk edge are integrated by grounding, etc., it becomes a large-sized construction method that is attached to the outer wall, so the conventional outer wall panel mounting structure in which each individual outer wall panel is attached to the building frame one by one. Compared to this, construction can be carried out more efficiently, and in this respect, labor saving and shortening of the construction period are possible.

この発明において、前記不燃断熱材は前記縦目地を介して隣り合う両胴縁間の全幅に渡って設け、前記胴縁に設けられた断熱材押え部材により押さえ状態に取付けても良い。
この構成の場合、不燃断熱材が両胴縁間の全幅に渡り、断熱材押え部材は両側の胴縁に取付ければ良いため、簡素な構成の断熱材押え部材で不燃断熱材を堅固に保持でき、かつ不燃断熱材の取付け施工も簡単に行える。 In the present invention, the non-combustible heat insulating material may be provided over the entire width between adjacent cylinder edges via the vertical joint, and may be attached in a pressed state by a heat insulating material pressing member provided on the cylinder edge.
In this configuration, the non-combustible heat insulating material spans the entire width between the two body edges, and the heat-insulating material retaining member only needs to be attached to the body edges on both sides. And non-combustible insulation can be easily installed.

この発明において、前記不燃断熱材は、この不燃断熱材を覆うカバープレートによって前記外壁パネルに取付けても良い。
この構成の場合、カバープレートは外壁パネルに取付けるため、外壁パネルの縁から胴縁が遠く離れていても、不燃断熱材の取付けが行える。また、不燃断熱材を覆うカバープレートを用いるため、不燃断熱材を堅固に取付けることができる。 In this invention, you may attach the said nonflammable heat insulating material to the said outer wall panel with the cover plate which covers this nonflammable heat insulating material.
In this configuration, since the cover plate is attached to the outer wall panel, the incombustible heat insulating material can be attached even if the trunk edge is far away from the edge of the outer wall panel. Moreover, since the cover plate which covers a noncombustible heat insulating material is used, a noncombustible heat insulating material can be firmly attached.

この発明において、前記不燃断熱材は、ビス止めによって前記外壁パネルに取付けても
良い。
この構成の場合も、外壁パネルの縁から胴縁が遠く離れていても、不燃断熱材の取付けが行える。また、不燃断熱材を直接に外壁パネルにビス止めするため、不燃断熱材の取り付け作業が簡単である。 In the present invention, the incombustible heat insulating material may be attached to the outer wall panel by screwing.
Even in this configuration, the incombustible heat insulating material can be attached even if the trunk edge is far away from the edge of the outer wall panel. In addition, since the non-combustible heat insulating material is screwed directly to the outer wall panel, it is easy to attach the non-combustible heat insulating material.

この発明の外壁パネル目地部耐火構造は、上下方向に並ぶ複数枚の耐火性の外壁パネルを、この外壁パネルの裏面の横幅方向の複数箇所で上下方向に延びる複数本の胴縁に取付けて外壁パネルユニットとし、この外壁パネルユニットをパネル幅方向に並べて建物躯体に複数設置してなる外壁における左右に隣り合う外壁パネル間の縦目地の目地部耐火構造であって、前記各外壁パネルユニットは、前記外壁パネルの側縁が前記胴縁から側方に延出し、前記左右に隣り合う外壁パネルユニットにおける前記外壁パネルの間の縦目地に跨がって裏面に不燃断熱材を配置し、前記縦目地内に密封部材を介在させたため、外壁パネルの建物躯体への取り付け、および壁パネルの縦目地の納まり工事の両方が建物の内部から施工出来て、無足場施工が可能となり、工期および費用の削減が期待でき、かつ耐火性および水密性が確保できる。   According to the outer wall panel joint fireproof structure of the present invention, a plurality of fireproof outer wall panels arranged in the vertical direction are attached to a plurality of trunk edges extending in the vertical direction at a plurality of positions in the width direction on the back surface of the outer wall panel. It is a panel unit, and the outer wall panel units are arranged in the panel width direction and a plurality of the outer wall panels are installed in the building frame. A side edge of the outer wall panel extends laterally from the trunk edge, and an incombustible heat insulating material is disposed on the back surface across a vertical joint between the outer wall panels in the outer wall panel unit adjacent to the left and right, and the vertical wall Since the sealing member is interposed in the joint, both the installation of the outer wall panel to the building frame and the installation work of the vertical joint of the wall panel can be done from the inside of the building, and the scaffolding construction is possible Next, reducing construction time and cost can be expected, and can be secured fire resistance and water-tightness.

この発明の第１の実施形態に係る外壁パネル目地部耐火構造を示す部分水平断面図である。It is a partial horizontal sectional view which shows the outer wall panel joint part fireproof structure which concerns on 1st Embodiment of this invention. 同外壁パネル目地部耐火構造を適用した外壁を一部分解状態で示す概略正面図である。It is a schematic front view which shows the outer wall to which the outer wall panel joint part fireproof structure is applied partially in an exploded state. （Ａ）は同外壁の外壁パネルと建物躯体との関係を示す垂直断面図、（Ｂ）はその部分水平断面図である。(A) is the vertical sectional view which shows the relationship between the outer wall panel of the same outer wall, and a building frame, (B) is the partial horizontal sectional view. （Ａ）は外壁パネルユニットの平面図、（Ｂ）は同外壁パネルの胴縁への取付け部分およびその胴縁の建物躯体への取付け部分を示す部分拡大平面図である。(A) is a top view of an outer wall panel unit, (B) is the elements on larger scale which show the attachment part to the trunk edge of the outer wall panel, and the attachment part to the building frame of the trunk edge. 同外壁パネルユニットの斜視図である。It is a perspective view of the same outer wall panel unit. 外壁パネルの中間省略垂直断面図である。It is a middle omission vertical sectional view of an outer wall panel. 上下に隣り合う外壁パネルの境界部分の垂直断面図である。It is a vertical sectional view of the boundary part of the outer wall panels adjacent to the top and bottom. この発明の他の実施形態に係る外壁パネル目地部耐火構造を示す部分水平断面図である。It is a partial horizontal sectional view which shows the outer wall panel joint part fireproof structure which concerns on other embodiment of this invention. この発明のさらに他の実施形態に係る外壁パネル目地部耐火構造を示す部分水平断面図である。It is a partial horizontal sectional view which shows the outer wall panel joint part fireproof structure which concerns on other embodiment of this invention. （Ａ）は同外壁パネル目地部耐火構造における不燃断熱材およびカバープレートの関係を示す縦断面図、（Ｂ）は同斜視図である。(A) is a longitudinal cross-sectional view which shows the relationship between the nonflammable heat insulating material and cover plate in the external wall panel joint part fireproof structure, (B) is the perspective view. この発明のさらに他の実施形態に係る外壁パネル目地部耐火構造を示す部分水平断面図である。It is a partial horizontal sectional view which shows the outer wall panel joint part fireproof structure which concerns on other embodiment of this invention. この発明のさらに他の実施形態に係る外壁パネル目地部耐火構造を示す部分水平断面図である。It is a partial horizontal sectional view which shows the outer wall panel joint part fireproof structure which concerns on other embodiment of this invention. 従来例の施工説明図である。It is construction explanatory drawing of a prior art example.

この発明の第１の実施形態を図１ないし図７と共に説明する。この外壁パネル目地部耐火構造が適用される建物は、例えば物流施設となる倉庫やコンビニエンスストア等の鉄骨系建物である。   A first embodiment of the present invention will be described with reference to FIGS. The building to which the outer wall panel joint fireproof structure is applied is, for example, a steel-based building such as a warehouse or a convenience store serving as a distribution facility.

図１は、この外壁パネル目地部耐火構造を示す部分水平断面図である。この外壁パネル目地部耐火構造は、耐火性の外壁パネル２２で構成される外壁における左右の外壁パネル２２，２２間の縦目地３５の目地部耐火構造である。外壁パネル２２は、上下左右にそれぞれ複数枚並んで外壁を構成する。各外壁パネル２２は、不燃断熱材２７を屋外側および屋内側の鋼板２８，２９で挟み込んだ金属サンドイッチパネルである。不燃断熱材２７は、ロックウール等の非定形の材料であるが、けい酸カルシウム板や石膏ボード等であっても良い。屋外側の鋼板２８は、左右の縁部に屋内側へ折り曲げられて不燃断熱材２７の小口面を覆う折曲片２８ａを有し、隣り合う外壁パネル２２，２２の折曲片２８ａ，２８ａ間に縦目地３５となる空間が形成される。折曲片２８ａは、屋内側の鋼板２９には連続しておらず、両面の鋼板２８，２９間の熱橋を回避している。折曲片２８ａの内側に位置して不燃断熱材２７の小口面は、石膏ボード等の不燃断熱材からなる小口覆い部材２７ａで覆っている。   FIG. 1 is a partial horizontal sectional view showing this outer wall panel joint fireproof structure. The outer wall panel joint fireproof structure is a joint fireproof structure of a vertical joint 35 between the left and right outer wall panels 22 and 22 in the outer wall constituted by the fireproof outer wall panel 22. A plurality of outer wall panels 22 are arranged side by side in the vertical and horizontal directions to form the outer wall. Each outer wall panel 22 is a metal sandwich panel in which an incombustible heat insulating material 27 is sandwiched between steel plates 28 and 29 on the outdoor side and the indoor side. The incombustible heat insulating material 27 is an amorphous material such as rock wool, but may be a calcium silicate plate or a gypsum board. The steel plate 28 on the outdoor side has bent pieces 28a that are bent inward on the left and right edges to cover the small edge surface of the incombustible heat insulating material 27, and between the bent pieces 28a and 28a of the adjacent outer wall panels 22 and 22. The space which becomes the vertical joint 35 is formed. The bent piece 28a is not continuous with the steel plate 29 on the indoor side, and avoids a thermal bridge between the steel plates 28 and 29 on both sides. The small face of the non-combustible heat insulating material 27 located inside the bent piece 28a is covered with a small cover member 27a made of non-combustible heat insulating material such as gypsum board.

外壁パネル２２は、上下方向に延びる複数本の胴縁２３に取付けられ、胴縁２３を介して後述のように建物躯体に取付けられる。胴縁２３は、同図の例ではリップ溝形鋼とされ、パネル端部の胴縁２３、すなわち縦目地３５に位置する胴縁２３は、パネル幅方向の内向きに開口してウェブ部２３ａが目地３５側に位置している。外壁パネル２２の胴縁２３への取付けは、外壁パネル２２を表裏に貫通するドリル付きタッピングビス等の固着具３０により行われる。同図において、固着具３０の頭部が外壁パネル２２の表面から沈み込んで図示されているのは、外壁パネル２２における上下間の継手部分の凹み部２２ａ（図６、図７）内に固着具３０の頭部が位置し、その頭部が図１に表れているからである。   The outer wall panel 22 is attached to a plurality of trunk edges 23 extending in the vertical direction, and is attached to the building frame via the trunk edges 23 as described later. The body edge 23 is a lip channel steel in the example of the figure, and the body edge 23 at the end of the panel, that is, the body edge 23 located on the vertical joint 35 opens inward in the panel width direction to open the web part 23a. Is located on the joint 35 side. The outer wall panel 22 is attached to the trunk edge 23 by a fixing tool 30 such as a tapping screw with a drill that penetrates the outer wall panel 22 from the front to the back. In the same figure, the head of the fixing tool 30 is shown sinking from the surface of the outer wall panel 22, which is fixed in the recess 22 a (FIG. 6, FIG. 7) of the joint portion between the upper and lower sides of the outer wall panel 22. This is because the head of the tool 30 is located and the head appears in FIG.

図１において、この実施形態の外壁パネル目地部耐火構造では、外壁パネル２２の側縁が胴縁２３から側方に延出し、換言すれば、胴縁２３は外壁パネル２２の側縁から少し離れた位置に設置し、左右に隣り合う外壁パネル２２，２２の間の縦目地３５に跨がって裏面に不燃断熱材３８を配置している。不燃断熱材３８は、縦目地３５を介して隣り合う両胴縁２３，２３間の全幅に渡って設ける。縦目地３５内には、それぞれレインバリアおよびウィンドバリアとなる密封部材３６，３７を介在させている。ウィンドバリアとなる密封部材３７は、必ずしも設けなくても良い。   In FIG. 1, in the outer wall panel joint fireproof structure of this embodiment, the side edge of the outer wall panel 22 extends laterally from the trunk edge 23, in other words, the trunk edge 23 is slightly separated from the side edge of the outer wall panel 22. An incombustible heat insulating material 38 is disposed on the back surface across the vertical joint 35 between the outer wall panels 22, 22 adjacent to each other on the left and right. The non-combustible heat insulating material 38 is provided over the entire width between the two trunk edges 23, 23 via the vertical joint 35. Sealing members 36 and 37 serving as a rain barrier and a wind barrier are interposed in the vertical joint 35, respectively. The sealing member 37 serving as a wind barrier is not necessarily provided.

不燃断熱材３８は、この例では帯状に延びるボードであり、ロックウールボード（例えば２５mm厚以上）、けい酸カルシウム板（例えば，タイプ３（２種）１６mm厚以上）、または強化石こうボード（例えば，１５厚mm以上）などが用いられる。不燃断熱材３８の厚みや幅は、求められる耐火性能に応じて適宜選定される。   Incombustible heat insulating material 38 is a board extending in a band shape in this example, rock wool board (for example, 25 mm or more thick), calcium silicate board (for example, type 3 (type 2) 16 mm or more), or reinforced gypsum board (for example, , 15 mm or more). The thickness and width of the incombustible heat insulating material 38 are appropriately selected according to the required fire resistance.

不燃断熱材３８の固定形態としては、両側の胴縁２３，２３間に不燃断熱材３８を積層していき、胴縁２３に設けられた断熱材押え部材３３により不燃断熱材３８を押さえた状態に取付ける。断熱材押え部材３３は、図示の例ではアングルピースからなり、片方のフランジ部分が胴縁２３にタッピングビス等の固着具４６で固定され、もう片方のフランジ部分で不燃断熱材３８を押さえ込む。この場合、固着具４６は、縦目地３５の長手方向に離れた複数箇所に設けられる。   As a fixed form of the incombustible heat insulating material 38, the incombustible heat insulating material 38 is laminated between the body edges 23, 23 on both sides, and the incombustible heat insulating material 38 is pressed by the heat insulating material pressing member 33 provided on the body edge 23. Install to. In the illustrated example, the heat insulating material pressing member 33 is formed of an angle piece, and one flange portion is fixed to the trunk edge 23 with a fixing tool 46 such as a tapping screw, and the other flange portion presses the non-combustible heat insulating material 38. In this case, the fasteners 46 are provided at a plurality of locations separated in the longitudinal direction of the vertical joint 35.

なお、断熱材押え部材３３は、部分的に不燃断熱材３８を押えるアングルピースとする代わりに、図８に示すように、断面ハット形の鋼板等とし、その両側部を前記両胴縁２３にビス留めするようにしても良い。   The heat insulating material pressing member 33 is a steel plate having a hat-shaped cross section as shown in FIG. 8 instead of an angle piece that partially holds the non-combustible heat insulating material 38, and both side portions thereof are connected to the two body edges 23. You may make it screw.

図１において、縦目地３５内の前記密封部材３６，３７のうち、レインバリアとなる屋外側の密封部材３６は、中空のゴム製等のガスケット等からなり、対向するいずれか片方の外壁パネル２２の小口面に固定され、先端が他方の外壁パネル２２の小口面に押し当てられる。ウィンドバリアとなる屋内側の密封部材３７は、対向する両側の外壁パネル２２の小口面にそれぞれ固定された２つの中空のガスケットからなり、これら２つのガスケットは、両外壁パネル２２，２２を設置することで互いに押し当てられる。前記各ガスケットは、いずれも縦目地３５の長手方向に延びて設けられる。両密封部材３６，３７間で縦目地３５内に形成される空間は、何処かで屋外に開放されたオープンジョイント工法の構成としても良い。上記のようなガスケット工法とすることで、屋外側からの水密施工が不要となる。なお、湿式の密封部材としても良い。   In FIG. 1, of the sealing members 36 and 37 in the vertical joint 35, the outdoor-side sealing member 36 serving as a rain barrier is made of a hollow rubber gasket or the like, and either one of the opposing outer wall panels 22. The tip is pressed against the facet of the other outer wall panel 22. The indoor side sealing member 37 serving as a wind barrier is composed of two hollow gaskets respectively fixed to the small face surfaces of the opposing outer wall panels 22, and these two gaskets are used to install both outer wall panels 22 and 22. Are pressed against each other. Each of the gaskets is provided extending in the longitudinal direction of the vertical joint 35. The space formed in the vertical joint 35 between both the sealing members 36 and 37 may be configured as an open joint method that is open to the outdoors somewhere. By setting it as the above gasket construction methods, the watertight construction from the outdoor side becomes unnecessary. A wet sealing member may be used.

図６、図７は、外壁パネル２２の縦断面の例を示す。外壁パネル２２は、上記のように不燃断熱材２７を屋外側および屋内側の鋼板２８，２９で挟み込んだ金属サンドイッチパネルである。
外壁パネル２２は、横長形状とされ、上端部および下端部は、図７にその接合状態を示すように、互いに嵌まり合う突条部分および凹溝部分を有し、その蛇行した嵌まり合い面で雨水や風の侵入を阻止し、耐火性を向上させ、また浸入した雨水が流下し易くなる継手形状となる。 6 and 7 show examples of longitudinal sections of the outer wall panel 22. The outer wall panel 22 is a metal sandwich panel in which the non-combustible heat insulating material 27 is sandwiched between the outdoor side and indoor side steel plates 28 and 29 as described above.
The outer wall panel 22 has a horizontally long shape, and the upper end portion and the lower end portion have protrusions and groove portions that fit into each other as shown in FIG. This prevents the intrusion of rainwater and wind, improves the fire resistance, and has a joint shape that facilitates the flow of infiltrated rainwater.

図２〜図５と共に、この外壁パネル目地部耐火構造を適用した外壁の構成例を説明する。図２に示すように、この外壁は、複数枚の外壁パネル２２を地組により下地となる胴縁２３と一体化させて大判化した外壁パネルユニット２１とし、この外壁パネルユニット２１を建物躯体２６に取付けるようにしている。具体的には、上下方向に並ぶ複数枚の外壁パネル２２を、この外壁パネル２２の横幅方向の複数箇所で上下方向に延びる複数本の胴縁２３に取付けて外壁パネルユニット２１（図５参照）とし、図３のように、この外壁パネルユニット２１を、前記胴縁２３で前記建物躯体２６に取付ける。外壁パネルユニット２１は、上下左右に複数並べて設置する。建物躯体２６は、図２，図３に示すように、柱３４、梁４１，４１Ａ（図３）、およびスラブ３１等により構成される。   The example of a structure of the outer wall to which this outer wall panel joint fireproof structure is applied is demonstrated with FIGS. As shown in FIG. 2, this outer wall is a large-sized outer wall panel unit 21 in which a plurality of outer wall panels 22 are integrated with a trunk edge 23 as a base by a ground structure, and the outer wall panel unit 21 is formed as a building frame 26. To be installed on. Specifically, a plurality of outer wall panels 22 arranged in the vertical direction are attached to a plurality of trunk edges 23 extending in the vertical direction at a plurality of locations in the lateral width direction of the outer wall panel 22, and the outer wall panel unit 21 (see FIG. 5). As shown in FIG. 3, the outer wall panel unit 21 is attached to the building frame 26 with the trunk edge 23. A plurality of the outer wall panel units 21 are installed side by side vertically and horizontally. As shown in FIGS. 2 and 3, the building housing 26 includes a pillar 34, beams 41 and 41 </ b> A (FIG. 3), a slab 31, and the like.

図３において、胴縁２３は、建物躯体２６への外壁パネル２２の取付け用の下地となる棒状の下地材であって、ここでは軽量形鋼のリップ溝形鋼が用いられている。この胴縁２３は、そのＣ字の開口側が胴縁２３の並び方向つまり外壁パネル２２の幅方向を向くように設けられる。各胴縁２３は開口側が互いに同じ方向とされているが、外壁パネルユニット２１の両端の胴縁２３については、いずれも開口側がパネル幅の中央側に向くように、すなわちリップ溝形鋼のウェブ面が外壁パネル２２の外向きとなるように設けられる。胴縁２３は、この他に角パイプ等の軽量形鋼であっても良く、またリップ溝形鋼と角パイプを混在させても良い。   In FIG. 3, the trunk edge 23 is a rod-shaped base material that serves as a base for mounting the outer wall panel 22 to the building frame 26, and here, a light-weight steel lip groove steel is used. The trunk edge 23 is provided so that the C-shaped opening side faces the arrangement direction of the trunk edges 23, that is, the width direction of the outer wall panel 22. The opening sides of the body edges 23 are in the same direction as each other. However, as for the body edges 23 at both ends of the outer wall panel unit 21, the opening side faces the center side of the panel width, that is, the lip channel steel web. The surface is provided so as to face outward of the outer wall panel 22. In addition, the body edge 23 may be a lightweight steel such as a square pipe, or a lip groove steel and a square pipe may be mixed.

外壁パネル２２の胴縁２３への取付けには、図４（Ｂ）に示すようにドリル付きタッピングビス等の軸状の固着具３０が用いられる。   For attaching the outer wall panel 22 to the body edge 23, as shown in FIG. 4B, a shaft-like fixing tool 30 such as a tapping screw with a drill is used.

図３に示すように、外壁パネルユニット２１は、この例では、前記胴縁２３を建物躯体２６のスラブ３１よりも屋外側に位置させている。外壁パネルユニット２１の建物躯体２６への取付けは、胴縁２３の部分で行われる。胴縁２３を建物躯体２６に取付ける構造としては、建物躯体２６のスラブ３１の端部および耐風梁４１Ａにファスナ１４を取付け、これらファスナ１４に、外壁パネルユニット２１の胴縁２３をボルトまたは溶接で固定する構造とされる。スラブ３１は、建物躯体２６の梁４１上にデッキプレートを載せ、その上にコンクリートを打設した構成とされ、外壁側の小口面は内向きの溝形鋼等の形鋼３１ａで構成されている。スラブ３１のファスナ１４は、上記形鋼３１ａの上面に溶接等で固定されている。ファスナ１４は、Ｌ形鋼の切片等からなり、各胴縁２３と対応する箇所に部分的に設けられている。   As shown in FIG. 3, in this example, the outer wall panel unit 21 has the trunk edge 23 positioned on the outdoor side of the slab 31 of the building housing 26. The outer wall panel unit 21 is attached to the building frame 26 at the trunk edge 23. As a structure for attaching the trunk edge 23 to the building frame 26, the fastener 14 is attached to the end of the slab 31 of the building frame 26 and the wind-resistant beam 41 </ b> A. The structure is fixed. The slab 31 is configured such that a deck plate is placed on the beam 41 of the building frame 26 and concrete is placed thereon, and a small face on the outer wall side is configured by a section steel 31a such as an inward channel steel. Yes. The fastener 14 of the slab 31 is fixed to the upper surface of the shape steel 31a by welding or the like. The fastener 14 is made of an L-shaped steel piece or the like, and is partially provided at a portion corresponding to each trunk edge 23.

図４（Ｂ）は胴縁２３のファスナ１４への取付け部分を拡大して示す。同図の例では、ファスナ１４の横片１４ａが形鋼３１ａの上面に固定され、立片１４ｂに胴縁２３がボルト４２およびナット４３により固定される。ナット４３は、リップ溝形の胴縁２３のフランジ内面に溶接で固定され、ナット４３に合わせて上記フランジおよびファスナ１４にボルト挿通孔が設けられている。そのため、ボルト４２を締め込む作業は屋内側から行える。なお、胴縁２３は、ファスナ１４に対しボルト４２に代えて溶接で固定しても良い。   FIG. 4B is an enlarged view of a portion where the body edge 23 is attached to the fastener 14. In the example of the figure, the lateral piece 14a of the fastener 14 is fixed to the upper surface of the section steel 31a, and the trunk edge 23 is fixed to the standing piece 14b by bolts 42 and nuts 43. The nut 43 is fixed to the inner surface of the flange of the lip groove-shaped body edge 23 by welding, and bolt insertion holes are provided in the flange and fastener 14 in accordance with the nut 43. Therefore, the work of tightening the bolt 42 can be performed from the indoor side. The trunk edge 23 may be fixed to the fastener 14 by welding instead of the bolt 42.

図３において、耐風梁４１Ａは、上下のスラブ３１，３１間の中間高さ位置に設けられて外壁パネル２２に作用する風荷重を内側から支える梁である。耐風梁４１Ａに対する外壁パネルユニット２１の胴縁２３の取付けも、スラブ３１への取付けと同様にファスナ１４とボルト・ナットまたは溶接で行われている。   In FIG. 3, a wind resistant beam 41 </ b> A is a beam that is provided at an intermediate height position between the upper and lower slabs 31, and supports a wind load acting on the outer wall panel 22 from the inside. The body edge 23 of the outer wall panel unit 21 is attached to the wind-resistant beam 41A in the same manner as the attachment to the slab 31 by fasteners 14 and bolts / nuts or welding.

外壁パネルユニット２１の高さは、同図の例では上下のスラブ３１，３１間の高さよりも低く、上下に並ぶ外壁パネルユニット２１，２１は、胴縁２３の対向する端部が相互にジョイントプレート１５で連結されている。そのため、同図の例では、各外壁パネルユニット２１の胴縁２３の下部は直接には建物躯体２６に取付けられていないが、下側に連結された胴縁２３の上部が建物躯体２６に取付けられることにより、胴縁２３の下部も建物躯体２６に堅固に支持される。   The height of the outer wall panel unit 21 is lower than the height between the upper and lower slabs 31, 31 in the example shown in the figure. The plates 15 are connected. Therefore, in the example of the figure, the lower part of the trunk edge 23 of each outer wall panel unit 21 is not directly attached to the building frame 26, but the upper part of the trunk edge 23 connected to the lower side is attached to the building frame 26. As a result, the lower portion of the trunk edge 23 is also firmly supported by the building frame 26.

なお、図３（Ｂ）および図４（Ａ）に示すように、スラブ３１と外壁パネル２２との間には、外壁パネルユニット２１の胴縁２３をスラブ３１よりも屋外側に位置させたことによって、スラブ３１の縁に沿う隙間ｄが生じるが、この隙間ｄは、モルタルやロックウール等の不燃断熱材の充填部４５によって塞ぐ。   3B and 4A, between the slab 31 and the outer wall panel 22, the trunk edge 23 of the outer wall panel unit 21 is positioned on the outdoor side of the slab 31. As a result, a gap d along the edge of the slab 31 is generated. This gap d is closed by a filling portion 45 of a non-combustible heat insulating material such as mortar or rock wool.

この構成の外壁パネル目地部耐火構造によると、水密性と耐火性を両立させるについて、無理に目地３５内で耐火性を確保しようとせずに、外壁パネル２２，２２の間の縦目地３５に跨がって室内側に不燃断熱材３８を配置し、縦目地３５内には密封部材３６，３７のみを介在させている。そのため、縦目地３５の耐火性能の確保については、室内側からの不燃断熱材３８の後施工として、縦目地３５の内部は水密性の確保に特化し、水密性と耐火性を両立させることができる。縦目地３５が水密性の確保に特化できることから、縦目地３５内にガスケットやオープンジョイント工法を採るスペースが十分に得られ、屋外側からの水密施工を不要にできる。このように外壁パネル２２の納まりの工事の施工が建物の内部から行えることで、外壁パネル２２の無足場施工が可能となり、工期および費用の削減が期待できる。また、これまで外部足場の撤去時期に影響していた工事、例えば外構工事などの工事の早期着手ができることで、全体工期の短縮が期待できる。また、内部施工とすることで作業環境と作業性能の効率化が見込めるため、人員コストの削減にも期待できる。   According to the fireproof structure of the outer wall panel joint portion of this configuration, it is possible to straddle the vertical joint 35 between the outer wall panels 22 and 22 without forcibly securing fire resistance in the joint 35 in order to achieve both water tightness and fire resistance. Accordingly, the non-combustible heat insulating material 38 is disposed on the indoor side, and only the sealing members 36 and 37 are interposed in the vertical joint 35. Therefore, as for ensuring the fire resistance of the vertical joint 35, the interior of the vertical joint 35 is specialized to ensure water tightness as post-installation of the non-combustible heat insulating material 38 from the indoor side, and it is possible to achieve both water tightness and fire resistance. it can. Since the vertical joint 35 can be specialized for ensuring watertightness, a sufficient space for the gasket and the open joint method can be obtained in the vertical joint 35, and watertight construction from the outdoor side can be eliminated. As described above, the construction work for housing the outer wall panel 22 can be performed from the inside of the building, so that the scaffolding of the outer wall panel 22 can be performed, and the construction period and cost can be reduced. In addition, it is possible to shorten the overall construction period by enabling the early start of the construction that has affected the removal timing of the external scaffold, for example, external construction. In addition, the efficiency of the work environment and work performance can be expected by using internal construction, which can be expected to reduce personnel costs.

縦目地３５の耐火性については、胴縁２３から外壁パネル２２の側縁が延出する形とし、不燃断熱材３８により目地を覆うようにしているため、仮に火災を受けた際にも、外壁パネル２２の縦目地間の開きによる火炎の流出入を防ぐことができ、耐火性に優れる。縦目地３５の内部は密封部材３２６，３７の配置による水密性の確保に特化できるため、水密性にも優れる。   As for the fire resistance of the vertical joint 35, the side edge of the outer wall panel 22 extends from the trunk edge 23 and the joint is covered with the non-combustible heat insulating material 38. The inflow and outflow of flame due to the opening between the vertical joints of the panel 22 can be prevented, and the fire resistance is excellent. Since the inside of the vertical joint 35 can be specialized for ensuring water tightness by the arrangement of the sealing members 326 and 37, the water tightness is also excellent.

さらに、この外壁パネル目地部耐火構造を適用するにつき、上記のように地組により外壁パネル２２と胴縁２３とを一体化させ大判化させた外壁パネルユニット２１として建物躯体２６に取付ける構造を採用することで、外壁パネル２２の設置についても足場が不要になり、かつ作業の効率化が得られる。   Furthermore, when applying this outer wall panel joint fireproof structure, a structure is adopted in which the outer wall panel 22 and the trunk edge 23 are integrated and enlarged to form the outer wall panel unit 21 and attached to the building frame 26 as described above. This eliminates the need for a scaffold for the installation of the outer wall panel 22 and increases the work efficiency.

すなわち、複数枚の外壁パネル２２を胴縁２３に取付けて大版化した下地一体型の外壁パネルユニット２１とした場合、複数の外壁パネル２２を纏めて建物躯体２６に取付けることができる。そのため、個々の外壁パネル２２を１枚ずつ建物躯体２６に取付ける従来の外壁パネルの取付け構造に比べて、省力化、短工期化が可能となる。外壁パネルユニット２１の胴縁２３を建物躯体２６に取付ける作業は、建物躯体２６内のスラブ３１や梁４１上等から行えるため、この点からも、建物躯体２６の外周に従来は必要であった足場が不要となる。   That is, when a plurality of outer wall panels 22 are attached to the trunk edge 23 to make the base-integrated outer wall panel unit 21 larger, the plurality of outer wall panels 22 can be collectively attached to the building frame 26. Therefore, it is possible to save labor and shorten the construction period compared to the conventional outer wall panel mounting structure in which the individual outer wall panels 22 are mounted on the building frame 26 one by one. Since the work of attaching the body edge 23 of the outer wall panel unit 21 to the building frame 26 can be performed from the slab 31 or the beam 41 in the building frame 26, it has been conventionally necessary for the outer periphery of the building frame 26 from this point. No scaffolding is required.

図９、図１０は、この外壁パネル目地部耐火構造における、不燃断熱材３８の取付構造の変形例を示す。同図の例では、縦目地３５に設ける不燃断熱材３８は、図９のように断面ハット形のカバープレート３４で覆い、そのカバープレート３４の両側縁を両外壁パネル２２，２２の裏面にビス４７で留め付けるようにしている。カバープレート３４は、例えば鋼板等の金属板である。この場合、不燃断熱材３８は、図１０（Ａ）に縦断面図で示すように、外壁パネル２２の上下幅の中間位置で継ぎ足すと共に、カバープレート３４も図１０（Ｂ）に斜視図で示すように、外壁パネル２２の上下幅の中間位置で、かつ不燃断熱材３８の継ぎ目から上下にずれた位置で継ぎ足すように配置する。これにより、不燃断熱材３８の上下の継ぎ目が外壁パネル２２の横目地から外され、かつ不燃断熱材３８の上下の継ぎ目がカバープレート３４で確実に覆われるので、耐火性能をより高めることができる。   9 and 10 show a modification of the mounting structure of the non-combustible heat insulating material 38 in the outer wall panel joint fireproof structure. In the example shown in the figure, the non-combustible heat insulating material 38 provided on the vertical joint 35 is covered with a cover plate 34 having a hat-shaped cross section as shown in FIG. 9, and both side edges of the cover plate 34 are screwed to the back surfaces of both outer wall panels 22 and 22. Attach it at 47. The cover plate 34 is a metal plate such as a steel plate, for example. In this case, the non-combustible heat insulating material 38 is added at an intermediate position of the vertical width of the outer wall panel 22 as shown in a longitudinal sectional view in FIG. 10A, and the cover plate 34 is also shown in a perspective view in FIG. As shown in the drawing, the outer wall panel 22 is arranged so as to be added at an intermediate position between the upper and lower widths and at a position shifted vertically from the joint of the incombustible heat insulating material 38. Thereby, since the upper and lower joints of the non-combustible heat insulating material 38 are removed from the horizontal joints of the outer wall panel 22 and the upper and lower joints of the non-combustible heat insulating material 38 are reliably covered with the cover plate 34, the fire resistance can be further improved. .

図１１は、この外壁パネル目地部耐火構造における、不燃断熱材３８の取付構造の他の変形例を示す。同図の例では、縦目地３５に設ける不燃断熱材３８は、屋内側から不燃断熱材３８を貫通するビス４９によって、隣り合う外壁パネル２２，２２に取り付けている。
ビス４９は、ドリル付きタッピングビス等からなる。不燃断熱材３８は、同図の例では複層としているが、単層であっても良い。複層の方が、より耐火性向上の効果がある。なお、他の各実施形態においても、不燃断熱材３８は複層としても良い。
この実施形態のように不燃断熱材３８をビス止めとした場合は、不燃断熱材３８の取り付け作業がより簡単となる。この構成の場合も、外壁パネル２２の縁から胴縁２３が遠く離れていても、不燃断熱材３８の取付けが行える。 FIG. 11 shows another modification of the mounting structure of the non-combustible heat insulating material 38 in the outer wall panel joint fireproof structure. In the example of the figure, the incombustible heat insulating material 38 provided in the vertical joint 35 is attached to the adjacent outer wall panels 22 and 22 by screws 49 that penetrate the incombustible heat insulating material 38 from the indoor side.
The screw 49 is a tapping screw with a drill or the like. The non-combustible heat insulating material 38 is a multi-layer in the example of the figure, but may be a single layer. The multi-layer is more effective in improving fire resistance. In each of the other embodiments, the incombustible heat insulating material 38 may be a multilayer.
When the non-combustible heat insulating material 38 is screwed as in this embodiment, the mounting work of the non-combustible heat insulating material 38 becomes easier. Even in this configuration, the incombustible heat insulating material 38 can be attached even if the trunk edge 23 is far away from the edge of the outer wall panel 22.

図１１の実施形態において、図１２のように、不燃断熱材３８の屋内側の面にカバープレート３４を被せ、これらカバープレート３４および不燃断熱材３８を貫通するビス４９によって不燃断熱材３８を隣り合う外壁パネル２２，２２に取り付けても良い。カバープレート３４は、図９の例と同じく鋼板等の金属板である。このようにカバープレート３４を設けても、耐火性がより向上する。
なお、図１１、図１２の実施形態において、特に説明した事項の他は、図１ないし図７と共に説明した第１の実施形態と同様である。 In the embodiment of FIG. 11, as shown in FIG. 12, the cover plate 34 is covered with the indoor side surface of the non-combustible heat insulating material 38, and the non-combustible heat insulating material 38 is adjacent to the cover plate 34 and the screws 49 that penetrate the non-combustible heat insulating material 38. You may attach to the matching outer wall panel 22,22. The cover plate 34 is a metal plate such as a steel plate as in the example of FIG. Thus, even if the cover plate 34 is provided, the fire resistance is further improved.
11 and 12 are the same as those of the first embodiment described with reference to FIGS. 1 to 7 except for the matters specifically described.

２１…外壁パネルユニット
２２…外壁パネル
２３…胴縁
２６…建物躯体
３３…断熱押え部材
３４…カバープレート
３５…縦目地
３６，３７…密封部材
３８…不燃断熱材
４９…ビス DESCRIPTION OF SYMBOLS 21 ... Outer wall panel unit 22 ... Outer wall panel 23 ... Body edge 26 ... Building frame 33 ... Insulation pressing member 34 ... Cover plate 35 ... Vertical joint 36, 37 ... Sealing member 38 ... Incombustible heat insulating material 49 ... Screw

Claims (4)

上下方向に並ぶ複数枚の耐火性の外壁パネルを、この外壁パネルの裏面の横幅方向の複数箇所で上下方向に延びる複数本の胴縁に取付けて外壁パネルユニットとし、この外壁パネルユニットをパネル幅方向に並べて建物躯体に複数設置してなる外壁における左右に隣り合う外壁パネル間の縦目地の目地部耐火構造であって、
前記各外壁パネルユニットは、前記外壁パネルの側縁が前記胴縁から側方に延出し、前記左右に隣り合う外壁パネルユニットにおける前記外壁パネルの間の縦目地に跨がって裏面に不燃断熱材を配置し、前記縦目地内に密封部材を介在させたことを特徴とする外壁パネル目地部耐火構造。 A plurality of fire-resistant outer wall panels arranged in the vertical direction are attached to a plurality of trunk edges extending in the vertical direction at a plurality of positions in the lateral width direction on the back surface of the outer wall panel to form an outer wall panel unit. It is a joint joint fireproof structure of the vertical joint between the outer wall panels adjacent to the left and right in the outer wall that is installed in the building frame side by side in the direction,
Each outer wall panel unit has a side edge of the outer wall panel extending laterally from the trunk edge and spans a vertical joint between the outer wall panels in the outer wall panel unit adjacent to the left and right, and a nonflammable heat insulation on the back surface. An outer wall panel joint fireproof structure in which a material is disposed and a sealing member is interposed in the vertical joint. 請求項１に記載の外壁パネル目地部耐火構造において、前記不燃断熱材は前記縦目地を介して隣り合う両胴縁間の全幅に渡って設け、前記胴縁に設けられた断熱材押え部材により押さえ状態に取付けた外壁パネル目地部耐火構造。   The outer wall panel joint fireproof structure according to claim 1, wherein the non-combustible heat insulating material is provided over the entire width between adjacent barrel edges via the vertical joint, and is provided by a heat insulating material pressing member provided on the trunk edge. External wall panel joint fireproof structure attached in a pressed state. 請求項１に記載の外壁パネル目地部耐火構造において、前記不燃断熱材は、この不燃断熱材を覆うカバープレートによって前記外壁パネルに取付けた外壁パネル目地部耐火構造。   The outer wall panel joint fireproof structure according to claim 1, wherein the incombustible heat insulating material is attached to the outer wall panel by a cover plate that covers the incombustible heat insulating material. 請求項１に記載の外壁パネル目地部耐火構造において、前記不燃断熱材は、ビス止めによって前記外壁パネルに取付けた外壁パネル目地部耐火構造。 The outer wall panel joint fireproof structure according to claim 1, wherein the non-combustible heat insulating material is attached to the outer wall panel by screwing.
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JP2018071243A (en) * 2016-11-01 2018-05-10 大和ハウス工業株式会社 Exterior wall structure of building
JP7399615B2 (en) 2018-12-27 2023-12-18 大和ハウス工業株式会社 Exterior wall panels and construction methods for exterior wall panels

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