JP2023010449A

JP2023010449A - Fireproof joint sealant structure

Info

Publication number: JP2023010449A
Application number: JP2021114591A
Authority: JP
Inventors: 清一原田; Seiichi Harada; 春樹古河; Haruki Furukawa
Original assignee: Nippon Steel Coated Sheet Corp
Current assignee: Nippon Steel Coated Sheet Corp
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2023-01-20

Abstract

To provide fireproof joint sealant structure that can suppress a joint sealant material from shifting in position and easily secures fire resistance efficiency.SOLUTION: Fireproof joint sealant structure 1 comprises a first panel P1, a second panel P2 adjoining the first panel P1, and a vertical joint sealant material 5 sandwiched between the first panel P1 and the second panel P2. The first panel P1 has a first recessed part 20 where a part of the vertical joint sealant material 5 is accommodated on a side face opposed to the second panel P2. The second panel P2 has a second recessed part 21 where the other part of the vertical joint sealant material 5 is accommodated on a side face opposed to the first panel P1. The vertical joint sealant material 5 has a fireproof material 6 accommodated in the first recessed part 20 and the second recessed part 21, and a holding member 7 holding the fireproof material 6 on the first panel P1. The first panel P1 has a core material 2 inside the first panel P1. The holding member 7 has a buried part 70 buried in the core material 2 and a holding part 71 holding the fireproof material 6.SELECTED DRAWING: Figure 1

Description

本開示は、耐火目地構造に関する。 The present disclosure relates to fire resistant joint structures.

特許文献１には、耐火パネルの外側面に複合耐火目地材を接着し、この耐火パネルを複合耐火目地材を介して隣接する他の耐火パネルの外側面に圧接し、複合耐火目地材を二枚の耐火パネル間に挟着した耐火壁が記載されている。 In Patent Document 1, a composite fire-resistant joint material is adhered to the outer surface of a fire-resistant panel, and this fire-resistant panel is pressed against the outer surface of another adjacent fire-resistant panel via the composite fire-resistant joint material. A refractory wall sandwiched between refractory panels is described.

特開２０１２－２０７４６９号公報JP 2012-207469 A

ところで、上述した特許文献１に記載の耐火壁では、複合耐火材が接着された耐火パネルを他の耐火パネルに対して建て込む際に、複合耐火目地材の位置が初期位置からずれて、二枚の耐火パネルの間から複合耐火目地材がはみ出す等の不具合が生じるおそれがあり、この場合、耐火性能が低下する。 By the way, in the fire-resistant wall described in Patent Document 1 described above, when the fire-resistant panel to which the composite fire-resistant material is adhered is erected against another fire-resistant panel, the position of the composite fire-resistant joint material is shifted from the initial position, There is a risk that the composite fire-resistant joint material will protrude from between the fire-resistant panels, and in this case, the fire-resistant performance will be reduced.

上記事情に鑑みて、本開示は、目地材の位置ずれを抑制することができて、耐火性能を確保しやすい耐火目地構造を提供することを、目的とする。 In view of the above circumstances, an object of the present disclosure is to provide a fire-resistant joint structure that can suppress displacement of the joint material and easily ensure fire-resistant performance.

本開示に係る一態様の耐火目地構造は、第一パネルと、前記第一パネルと隣接する第二パネルと、前記第一パネルと前記第二パネルの間に挟み込まれる縦目地材と、を備える。前記第一パネルは、前記第二パネルに対向する側面に、前記縦目地材の一部が収容される第一凹部を有する。前記第二パネルは、前記第一パネルに対向する側面に、前記縦目地材の他の一部が収容される第二凹部を有する。前記縦目地材は、前記第一凹部及び前記第二凹部に収容される耐火材と、前記耐火材を前記第一パネルに保持する保持部材と、を有する。前記第一パネルは、前記第一パネルの内側に芯材を有する。前記保持部材は、前記芯材に埋め込まれる埋め込み部と、前記耐火材を保持する保持部と、を有する。 A fireproof joint structure according to one aspect of the present disclosure includes a first panel, a second panel adjacent to the first panel, and a vertical joint material sandwiched between the first panel and the second panel. . The first panel has a first recess in a side surface facing the second panel, in which a part of the vertical joint material is accommodated. The second panel has a second recess in a side surface facing the first panel, in which another part of the vertical joint material is accommodated. The vertical joint material has a refractory material accommodated in the first recess and the second recess, and a holding member that holds the refractory material to the first panel. The first panel has a core inside the first panel. The holding member has an embedded portion embedded in the core material and a holding portion that holds the refractory material.

本開示に係る一態様の耐火目地構造によれば、目地材の位置ずれを抑制することができて、耐火性能を確保しやすい。 According to the fireproof joint structure of one aspect according to the present disclosure, it is possible to suppress the displacement of the joint material, and it is easy to ensure the fireproof performance.

図１は、本開示に係る第一実施形態の耐火目地構造を示す概略的な平断面図である。FIG. 1 is a schematic cross-sectional plan view showing the fireproof joint structure of the first embodiment according to the present disclosure. 図２は、同上の耐火目地構造が備える第一パネルを示す斜視図である。FIG. 2 is a perspective view showing a first panel included in the same fireproof joint structure. 図３Ａは、図２のＡ－Ａ線における断面図であり、図３Ｂは、図２のＢ－Ｂ線における断面図である。3A is a cross-sectional view taken along line AA of FIG. 2, and FIG. 3B is a cross-sectional view taken along line BB of FIG. 図４Ａは、同上の耐火目地構造が備える保持部材を示す斜視図である。図４Ｂは、同上の保持部材を示す平面図である。図４Ｃは、同上の保持部材を示す背面図である。図４Ｄは、同上の保持部材を示す正面図である。FIG. 4A is a perspective view showing a holding member included in the same fireproof joint structure. FIG. 4B is a plan view showing the same holding member. FIG. 4C is a rear view showing the same holding member. FIG. 4D is a front view showing the same holding member. 図５Ａから図５Ｃは、同上の第一パネルを平置きにして、縦目地材を取り付ける工程を示す概略的な正面断面図である。図５Ｄは、同上の第一パネルを建て起こして、縦目地材を第二パネルとの間に挟み込んだ状態を示す概略的な平断面図である。FIGS. 5A to 5C are schematic front cross-sectional views showing a process of laying the same first panel flat and attaching a vertical joint material. FIG. 5D is a schematic cross-sectional plan view showing a state in which the first panel is erected and the vertical joint material is sandwiched between the second panel and the first panel. 図６は、本開示に係る第二実施形態の耐火目地構造を示す概略的な平断面図である。FIG. 6 is a schematic cross-sectional plan view showing the fireproof joint structure of the second embodiment according to the present disclosure. 図７Ａは、同上の耐火目地構造が備える保持部材を示す斜視図である。図７Ｂは、同上の保持部材を示す平面図である。図７Ｃは、同上の保持部材を示す背面図である。図７Ｄは、同上の保持部材を示す正面図である。FIG. 7A is a perspective view showing a holding member included in the same fireproof joint structure. FIG. 7B is a plan view showing the same holding member. FIG. 7C is a rear view showing the same holding member. FIG. 7D is a front view showing the same holding member.

（第一実施形態）
１．概要
図１に示す第一実施形態の耐火目地構造１は、第一パネルＰ１と、第一パネルＰ１と隣接する第二パネルＰ２と、第一パネルＰ１と第二パネルＰ２の間に挟み込まれる縦目地材５と、を備える。第一パネルＰ１は、第二パネルＰ２に対向する側面に、縦目地材５の一部が収容される第一凹部２０を有する。第二パネルＰ２は、第一パネルＰ１に対向する側面に、縦目地材５の他の一部が収容される第二凹部２１を有する。縦目地材５は、第一凹部２０及び第二凹部２１に収容される耐火材６と、耐火材６を第一パネルＰ１に保持する保持部材７と、を有する。第一パネルＰ１は、第一パネルＰ１の内側に芯材２を有する。保持部材７は、芯材２に埋め込まれる埋め込み部７０と、耐火材６を保持する保持部７１と、を有する。 (First embodiment)
1. Overview The fireproof joint structure 1 of the first embodiment shown in FIG. 1 includes a first panel P1, a second panel P2 adjacent to the first panel P1, and a vertical A joint material 5 is provided. The first panel P1 has a first recess 20 in which a part of the vertical joint material 5 is accommodated on the side facing the second panel P2. The second panel P2 has a second recess 21 on the side facing the first panel P1, in which another part of the vertical joint material 5 is accommodated. The vertical joint material 5 has a refractory material 6 accommodated in the first recess 20 and the second recess 21, and a holding member 7 that holds the refractory material 6 to the first panel P1. The first panel P1 has a core material 2 inside the first panel P1. The holding member 7 has an embedded portion 70 embedded in the core material 2 and a holding portion 71 holding the refractory material 6 .

上記構成を備えることで、本実施形態の耐火目地構造１では、第一パネルＰ１の側面に装着される耐火材６を、第一パネルＰ１の側面の第一凹部２０に収容したうえで、保持部材７によって保持することができる。ここで、本実施形態の耐火目地構造１では、保持部材７の埋め込み部７０を第一パネルＰ１の内側の芯材２に埋め込むことができるため、保持部材７及び保持部材７によって保持される耐火材６を位置決めしやすい。そのため、本実施形態の耐火目地構造１では、縦目地材５（耐火材６及び保持部材７）を装着した第一パネルＰ１と第二パネルＰ２とを建て込む際に、第二パネルＰ２の第二凹部２１に縦目地材５を差し込みやすく、第二パネルＰ２との接触により縦目地材５が位置ずれを起こすことを抑制できる。これにより、本実施形態の耐火目地構造１では、縦目地材５の位置ずれを抑制できて、耐火性能を確保しやすい。 By providing the above configuration, in the fireproof joint structure 1 of the present embodiment, the fireproof material 6 attached to the side surface of the first panel P1 is accommodated in the first recess 20 on the side surface of the first panel P1, and then held. It can be held by member 7 . Here, in the fireproof joint structure 1 of the present embodiment, since the embedded portion 70 of the holding member 7 can be embedded in the core member 2 inside the first panel P1, the holding member 7 and the fireproof joint structure held by the holding member 7 It is easy to position the material 6. Therefore, in the fireproof joint structure 1 of the present embodiment, when erecting the first panel P1 and the second panel P2 equipped with the vertical joint material 5 (the fireproof material 6 and the holding member 7), the second panel P2 The vertical joint material 5 can be easily inserted into the two recesses 21, and displacement of the vertical joint material 5 due to contact with the second panel P2 can be suppressed. As a result, in the fire-resistant joint structure 1 of the present embodiment, it is possible to suppress the positional deviation of the vertical joint material 5, and it is easy to ensure the fire-resistant performance.

２．詳細
続いて、図１から図５に示す本実施形態の耐火目地構造１の各構成について更に詳しく説明する。以下では、図１に示す耐火目地構造１を基準として、第一パネルＰ１と第二パネルＰ２とが並ぶ方向を左右方向とし、第一パネルＰ１及び第二パネルＰ２の厚み方向を前後方向とし、この前後方向及び左右方向に対して直交する方向を上下方向として、耐火目地構造１の各構成について詳しく説明する。 2. Details Subsequently, each configuration of the fireproof joint structure 1 of the present embodiment shown in FIGS. 1 to 5 will be described in more detail. In the following, based on the fireproof joint structure 1 shown in FIG. Each component of the fire-resistant joint structure 1 will be described in detail, with the direction perpendicular to the front-rear direction and the left-right direction being defined as the up-down direction.

２－１．第一パネル及び第二パネル
本実施形態の耐火目地構造１では、第一パネルＰ１と第二パネルＰ２は、同じ構造のサンドイッチパネルで構成されている。そこで、以下では、第一パネルＰ１について詳しく説明する。 2-1. First Panel and Second Panel In the fireproof joint structure 1 of the present embodiment, the first panel P1 and the second panel P2 are composed of sandwich panels having the same structure. Therefore, the first panel P1 will be described in detail below.

図２及び図３に示す第一パネルＰ１は、建築用のパネルであり、例えば、外壁材として用いられる。第一パネルＰ１は、芯材２と、芯材２を前側から覆う金属外皮３と、芯材２を後側から覆う金属外皮４と、を備える。第一パネルＰ１は、第一パネルＰ１の内側に芯材２を有している。第一パネルＰ１を外壁材として用いる場合、金属外皮３は第一パネルＰ１の屋外側の面を構成し、金属外皮４は、第一パネルＰ１の屋内側の面を構成する。 A first panel P1 shown in FIGS. 2 and 3 is a panel for construction, and is used as an exterior wall material, for example. The first panel P1 includes a core 2, a metal skin 3 covering the core 2 from the front side, and a metal skin 4 covering the core 2 from the rear. The first panel P1 has a core material 2 inside the first panel P1. When the first panel P1 is used as an exterior wall material, the metal skin 3 constitutes the outdoor surface of the first panel P1, and the metal skin 4 constitutes the indoor surface of the first panel P1.

第一パネルＰ１は、矩形板状である。第一パネルＰ１は、上下方向に対して平行な長手方向と、左右方向に対して平行な短手方向と、前後方向に対して平行な厚み方向とを有する。第一パネルＰ１は、例えば、上下方向の長さが、５００～６０００ｍｍであり、左右方向の長さ（幅）が、２００～１５００ｍｍであり、前後方向の長さ（厚み）が、５０～１５０ｍｍである。 The first panel P1 has a rectangular plate shape. The first panel P1 has a longitudinal direction parallel to the vertical direction, a lateral direction parallel to the left-right direction, and a thickness direction parallel to the front-rear direction. The first panel P1 has, for example, a vertical length of 500 to 6000 mm, a horizontal length (width) of 200 to 1500 mm, and a front-rear length (thickness) of 50 to 150 mm. is.

２－１－１．芯材
芯材２は、その全体形状が、矩形の板状である。全体形状が板状とは、１枚の板に限らず、複数の部材を１枚の板をなすように並べたものも含まれる。 2-1-1. Core Material The overall shape of the core material 2 is a rectangular plate. The overall shape of a plate is not limited to one plate, and includes a plurality of members arranged to form one plate.

芯材２は、左の側面２０２、右の側面２０３、前面２０４、及び後面２０５を有する。芯材２は、右の側面２０３に上下方向に延びた第一凹部２０を有し、左の側面２０２に上下方向に延びた第二凹部２１を有する。凹部２０，２１は、芯材２の左右の側面２０２，２０３の前後方向のほぼ中央に位置し、かつ芯材２の左右の側面２０２，２０３の上下方向の全長にわたって位置する。 The core 2 has a left side 202 , a right side 203 , a front side 204 and a rear side 205 . The core member 2 has a first concave portion 20 extending vertically on the right side surface 203 and a second concave portion 21 extending vertically on the left side surface 202 . The recesses 20 and 21 are positioned substantially in the center of the left and right side surfaces 202 and 203 of the core material 2 in the front-rear direction, and are positioned over the entire length of the left and right side surfaces 202 and 203 of the core material 2 in the vertical direction.

芯材２は、ロックウールやグラスウールなどの繊維状無機材で形成される。芯材２は、断熱性を有する。芯材２は、左右方向に並んだ複数のブロック体で構成される。複数のブロック体のそれぞれは、繊維状無機材をバインダー等でブロック状に固めたものである。 The core material 2 is made of a fibrous inorganic material such as rock wool or glass wool. The core material 2 has heat insulating properties. The core material 2 is composed of a plurality of blocks arranged in the horizontal direction. Each of the plurality of blocks is obtained by solidifying a fibrous inorganic material with a binder or the like into a block shape.

複数のブロック体のうち、右端に位置するブロック体の右の側面に、第一凹部２０が設けられ、複数のブロック体のうち、左端に位置するブロック体の左の側面に、第二凹部２１が設けられている。複数のブロック体のそれぞれは、繊維状無機材の長手方向が、前後方向に沿っている。第一凹部２０と第二凹部２１のそれぞれの前後方向の長さ（つまり幅）は、例えば、３０～６０ｍｍであり、第一凹部２０と第二凹部２１のそれぞれの左右方向の長さ（つまり深さ）は、例えば、１０～２０ｍｍである。 A first concave portion 20 is provided on the right side surface of the block positioned at the right end among the plurality of block bodies, and a second concave portion 21 is provided on the left side surface of the block positioned at the left end among the plurality of block bodies. is provided. In each of the plurality of block bodies, the longitudinal direction of the fibrous inorganic material extends along the front-rear direction. The length (that is, the width) in the front-rear direction of each of the first recess 20 and the second recess 21 is, for example, 30 to 60 mm, and the length in the left-right direction of each of the first recess 20 and the second recess 21 (that is, depth) is, for example, 10 to 20 mm.

２－１－２．金属外皮
金属外皮３，４のそれぞれは、金属板をロール加工やプレス加工などにより所望の形状に成形することによって得られる。金属板は、例えば、厚みが０．２５～２．０ｍｍである。金属板は、塗装鋼板、亜鉛めっき鋼板、アルミニウム－亜鉛合金めっき鋼板、ガルバリウム鋼板（登録商標）、エスジーエル（登録商標）鋼板等であるが、これらに限定されない。 2-1-2. Metal skin Each of the metal skins 3 and 4 is obtained by forming a metal plate into a desired shape by rolling, pressing, or the like. The metal plate has a thickness of, for example, 0.25 to 2.0 mm. Examples of the metal plate include, but are not limited to, painted steel plate, galvanized steel plate, aluminum-zinc alloy plated steel plate, Galvalume steel plate (registered trademark), SGL (registered trademark) steel plate, and the like.

金属外皮３は、後側に向けて開口した矩形の箱状である。金属外皮３は、芯材２の前面２０４を覆う矩形板状の本体部３０と、芯材２の上面を覆う上の壁部３１と、芯材２の下面を覆う下の壁部３２と、芯材２の左の側面２０２のうち第二凹部２１よりも前側の部分を覆う左の壁部３３と、芯材２の右の側面２０３のうち第一凹部２０よりも前側の部分を覆う右の壁部３４と、を有する。 The metal skin 3 has a rectangular box shape with an opening toward the rear side. The metal skin 3 includes a rectangular plate-like main body 30 covering the front surface 204 of the core 2, an upper wall 31 covering the upper surface of the core 2, a lower wall 32 covering the lower surface of the core 2, A left wall portion 33 that covers a portion of the left side surface 202 of the core material 2 on the front side of the second recess 21, and a right side surface 203 of the core material 2 that covers a portion of the right side surface 203 of the core material 2 on the front side of the first recess 20. and a wall portion 34 of .

本体部３０に対して上下左右の壁部３１，３２，３３，３４のそれぞれは、直角又は略直角である。左右の壁部３３，３４は、矩形の平板部３３０，３４０と、平板部３３０，３４０の後端から左右方向外側に略直角に突出した矩形板状の突出部３３１，３４１とを有する。壁部３１，３２，３３，３４のうち、周方向に隣接する２つの壁部の間には、開口３５（図２参照）が形成される。 Each of the upper, lower, left, and right wall portions 31 , 32 , 33 , 34 is perpendicular or substantially perpendicular to the main body portion 30 . The left and right walls 33 , 34 have rectangular flat plate portions 330 , 340 and rectangular plate-like protruding portions 331 , 341 protruding from the rear ends of the flat plate portions 330 , 340 outward in the left-right direction at approximately right angles. An opening 35 (see FIG. 2) is formed between two circumferentially adjacent wall portions among the wall portions 31, 32, 33, and 34. As shown in FIG.

金属外皮４は、芯材２の後面２０５を覆う矩形板状の本体部４０と、芯材２の左の側面２０２のうち第二凹部２１よりも後側の部分を覆う左の壁部４１と、芯材２の右の側面２０３のうち第一凹部２０よりも後側の部分を覆う右の壁部４２と、を有する。左の壁部４１は、本体部４０の左縁から前側に突出し、右の壁部４２は、本体部４０の右縁から前側に突出している。 The metal skin 4 includes a rectangular plate-shaped body portion 40 covering the rear surface 205 of the core member 2 and a left wall portion 41 covering a portion of the left side surface 202 of the core member 2 on the rear side of the second recess 21 . , and a right wall portion 42 that covers a portion of the right side surface 203 of the core member 2 on the rear side of the first concave portion 20 . The left wall portion 41 protrudes forward from the left edge of the body portion 40 , and the right wall portion 42 protrudes forward from the right edge of the body portion 40 .

左右の壁部４１，４２のそれぞれは、平面視Ｕ字状に湾曲した湾曲部４１０，４２０と、湾曲部４１０，４２０の前端部から前側に突出した矩形状の平板部４１１，４２１と、を有する。 Each of the left and right wall portions 41 and 42 includes curved portions 410 and 420 that are curved in a U shape in plan view, and rectangular flat plate portions 411 and 421 that protrude forward from the front ends of the curved portions 410 and 420. have.

金属外皮３，４のそれぞれは、本体部３０，４０が芯材２の前後の面２０４，２０５に接着されて、芯材２と一体化することで、第一パネルＰ１を形成する。金属外皮３に形成される開口３５は、シーリング材とシーリング材を受ける受け材等によって閉塞される。 The main body portions 30 and 40 of the metal skins 3 and 4 are respectively bonded to the front and rear surfaces 204 and 205 of the core member 2 to be integrated with the core member 2 to form the first panel P1. The opening 35 formed in the metal skin 3 is closed by a sealing material, a receiving material for receiving the sealing material, or the like.

２－１－３．その他
第一パネルＰ１は、上下左右の壁部３１，３２，３３，３４のそれぞれに取り付けられる止水パッキン８を更に備える。止水パッキン８は、上の壁部３１の上面の前後方向の中央部と、下の壁部３２の下面の前後方向の中央部（図示略）と、左右の壁部３３，３４の平板部３３０，３４０の後端部のそれぞれに、取り付けられる直線状の複数のパッキン８０と、上下左右の壁部３１，３２，３３，３４の各コーナーに取り付けられるＬ字状の複数のコーナーパッキン８１と、を含む。複数のパッキン８０のそれぞれは、長手方向に直交する断面が、中空の半円形状である。複数のコーナーパッキン８１のそれぞれは、Ｌ字状の中実なブロックである。複数のパッキン８０と複数のコーナーパッキン８１は、第一パネルＰ１を全周にわたって囲むように正面視にて矩形枠状に設けられる。複数のパッキン８０と複数のコーナーパッキン８１とは、接着剤等で互いに接合される。複数のパッキン８０と複数のコーナーパッキン８１のそれぞれは、例えば合成ゴム製である。複数のパッキン８０と複数のコーナーパッキン８１のそれぞれは、内面側（壁部３１，３２，３３，３４側）に粘着面が設けられており、上下左右の壁部３１，３２，３３，３４に対して接着剤を用いずに取り付けることができる。 2-1-3. Others The first panel P1 further includes waterproof packings 8 attached to the upper, lower, left, and right wall portions 31, 32, 33, and 34, respectively. The water stop packing 8 includes a front-rear central portion of the upper surface of the upper wall portion 31 , a front-rear central portion (not shown) of the lower surface of the lower wall portion 32 , and flat plate portions of the left and right wall portions 33 and 34 . A plurality of linear packings 80 attached to the rear ends of 330 and 340, respectively, and a plurality of L-shaped corner packings 81 attached to the corners of the upper, lower, left, and right walls 31, 32, 33, and 34. ,including. Each of the plurality of packings 80 has a hollow semicircular cross section orthogonal to the longitudinal direction. Each of the plurality of corner packings 81 is an L-shaped solid block. The plurality of packings 80 and the plurality of corner packings 81 are provided in a rectangular frame shape in a front view so as to surround the entire circumference of the first panel P1. The plurality of packings 80 and the plurality of corner packings 81 are joined together with an adhesive or the like. Each of the plurality of packings 80 and the plurality of corner packings 81 is made of synthetic rubber, for example. Each of the plurality of packings 80 and the plurality of corner packings 81 is provided with an adhesive surface on the inner surface side (the side of the walls 31, 32, 33, 34). It can be attached without using an adhesive.

２－２．縦目地材
本実施形態では、縦目地材５は、図１に示すように、耐火材６、保持部材７、固定具９、第二耐火材１０、留め具１１、及びカバー材１２を有する。 2-2. Vertical Joint Material In this embodiment, the vertical joint material 5 has a refractory material 6, a holding member 7, a fixture 9, a second refractory material 10, a fastener 11, and a cover material 12, as shown in FIG.

２－２－１．耐火材
耐火材６は、第一パネルＰ１の第一凹部２０と第二パネルＰ２の第二凹部２１に対して上下方向の全長にわたって収容される。耐火材６は、上下方向に対して平行な長手方向を有する。 2-2-1. Refractory Material The refractory material 6 is accommodated over the entire length in the vertical direction in the first recess 20 of the first panel P1 and the second recess 21 of the second panel P2. The refractory material 6 has a longitudinal direction parallel to the vertical direction.

耐火材６は、凹部２０内の前側の部分に収容される。耐火材６は、第一パネルＰ１の芯材２よりも硬質でありかつ耐火性の高い部材である。耐火材６は、本実施形態では、強化石膏ボードである。なお、耐火材６は、強化石膏ボードに限らず、その他の、耐火性を有する部材であってもよく、例えば、石膏ボードや、珪酸カルシウムボードであってもよい。 The refractory material 6 is housed in the front portion of the recess 20 . The fireproof material 6 is a member that is harder and has higher fire resistance than the core material 2 of the first panel P1. The refractory material 6 is a reinforced gypsum board in this embodiment. The fire-resistant material 6 is not limited to the reinforced gypsum board, and may be other fire-resistant members such as a gypsum board or a calcium silicate board.

耐火材６は、本実施形態では、上下方向（第一パネルＰ１の長さ方向）に突き合わせて配置された複数の部材で構成される。耐火材６は、全体として、芯材２と同じ上下長さを有する。本実施形態では、耐火材６を構成する複数の部材のそれぞれは、角棒状である。耐火材６を構成する複数の部材のそれぞれは、長手方向にわたって断面形状が一定であり、断面形状は矩形状である。本実施形態では、耐火材６を構成する複数の部材のそれぞれは、二枚の強化石膏ボードを前後方向に重ね合わせて形成される。なお、耐火材６は、複数の部材ではなく、１つの部材で構成されてもよい。 In this embodiment, the fireproof material 6 is composed of a plurality of members that are butted against each other in the vertical direction (longitudinal direction of the first panel P1). The refractory material 6 has the same vertical length as the core material 2 as a whole. In this embodiment, each of the plurality of members forming the refractory material 6 is shaped like a square bar. Each of the plurality of members forming the refractory material 6 has a uniform cross-sectional shape along the longitudinal direction, and has a rectangular cross-sectional shape. In this embodiment, each of the plurality of members forming the refractory material 6 is formed by stacking two reinforced gypsum boards in the front-rear direction. Note that the fireproof material 6 may be composed of one member instead of a plurality of members.

耐火材６の左右方向の長さは、第一パネルＰ１の第一凹部２０、第一パネルＰ１の金属外皮３の突出部３４１、第二パネルＰ２の金属外皮３の突出部３３１、及び第二パネルＰ２の第二凹部２１の左右方向の長さを足し合わせた長さよりも若干長い。耐火材６の前後方向の長さは、凹部２０，２１の前後方向の長さよりも短く、第二耐火材１０の前後方向の長さよりも長い。耐火材６の左右方向の長さは、例えば５０ｍｍであり、耐火材６の前後方向の長さは、例えば３０ｍｍである。 The length of the refractory material 6 in the left-right direction is the first recess 20 of the first panel P1, the protrusion 341 of the metal skin 3 of the first panel P1, the protrusion 331 of the metal skin 3 of the second panel P2, and the second It is slightly longer than the sum of the lengths in the left-right direction of the second recess 21 of the panel P2. The length of the refractory material 6 in the front-rear direction is shorter than the length of the recesses 20 and 21 in the front-rear direction and longer than the length of the second refractory material 10 in the front-rear direction. The length of the refractory material 6 in the left-right direction is, for example, 50 mm, and the length of the refractory material 6 in the front-rear direction is, for example, 30 mm.

２－２－２．第二耐火材
第二耐火材１０は、第一パネルＰ１の厚み方向において、耐火材６と並んで位置する。第二耐火材１０は、耐火材６よりも後側に位置する。第二耐火材１０は、本実施形態では、耐火フェルトである。耐火フェルトは、生体溶解性繊維で形成される。耐火フェルトは、例えば、アルカリ・アース・シリケート（ＡＥＳ）ブランケットである。なお、第二耐火材１０は、耐火フェルトに限らず、その他の、耐火性を有するシート状の部材であってもよい。 2-2-2. Second refractory material The second refractory material 10 is positioned side by side with the refractory material 6 in the thickness direction of the first panel P1. The second refractory material 10 is located on the rear side of the refractory material 6 . The second refractory material 10 is refractory felt in this embodiment. Refractory felt is formed of biosoluble fibers. A refractory felt is, for example, an alkaline earth silicate (AES) blanket. In addition, the second fireproof material 10 is not limited to fireproof felt, and may be another fireproof sheet-like member.

第二耐火材１０は、前後方向（第一パネルＰ１の厚み方向）に重なるように折り曲げられた１枚の耐火フェルトを、複数、上下方向（第一パネルＰ１の長さ方向）に並べて構成される。複数の耐火フェルトは、例えば、上下方向の端部同士が前後方向に重なり合うように配置される。なお、複数の耐火フェルトは、上下方向に突き合わせて配置してもよい。第二耐火材１０は、全体として芯材２と同じ上下長さを有する。第二耐火材１０の左右方向の長さは、耐火材６の左右方向の長さと同じである。 The second refractory material 10 is configured by arranging a plurality of sheets of refractory felt folded so as to overlap in the front-rear direction (the thickness direction of the first panel P1) in the vertical direction (the length direction of the first panel P1). be. A plurality of refractory felts are arranged, for example, so that their ends in the vertical direction overlap each other in the front-rear direction. In addition, you may arrange|position a several fireproof felt in the up-down direction butt|matching. The second refractory material 10 has the same vertical length as the core material 2 as a whole. The length of the second refractory material 10 in the left-right direction is the same as the length of the refractory material 6 in the left-right direction.

耐火材６を構成する複数の部材の、隣接する部材同士の突き合わせ部分は、第二耐火材１０によって覆うことができ、これにより、この突き合わせ部分の耐火性の低下を抑えることができる。第二耐火材１０の左右方向の長さは、例えば５０ｍｍであり、第二耐火材１０の前後方向の長さは、例えば１３ｍｍである。なお、第二耐火材１０は、１つの耐火フェルトで構成されてもよい。 Abutted portions of adjacent members of the plurality of members constituting the refractory material 6 can be covered with the second refractory material 10, thereby suppressing deterioration of the fire resistance of the abutted portions. The length of the second refractory material 10 in the left-right direction is, for example, 50 mm, and the length of the second refractory material 10 in the front-rear direction is, for example, 13 mm. In addition, the second refractory material 10 may be composed of one refractory felt.

２－２－３．保持部材
図１及び図４ＡからＤに示す保持部材７は、第一パネルＰ１の芯材２に埋め込まれる埋め込み部７０と、耐火材６を保持する保持部７１と、保持部７１の移動を規制する移動規制部７２と、を有する。保持部材７は、耐火材６に比べて上下方向に短い部材である。耐火材６は、複数の保持部材７によって、耐火材６の長手方向の複数部分が保持される。複数の保持部材７は、構造が互いに同じである。 2-2-3. Holding Member The holding member 7 shown in FIGS. 1 and 4A to 4D includes an embedded portion 70 embedded in the core material 2 of the first panel P1, a holding portion 71 for holding the refractory material 6, and a movement of the holding portion 71. and a movement restricting portion 72 for moving. The holding member 7 is a member that is vertically shorter than the refractory material 6 . The refractory material 6 is held at a plurality of portions in the longitudinal direction by a plurality of holding members 7 . The plurality of holding members 7 have the same structure.

保持部材７は、本実施形態では、金属板で形成されている。金属板の厚みは、第一パネルＰ１の芯材２に埋め込み部７０が埋め込みやすく、かつ留め具１１が貫通しやすい厚みであり、例えば、０．５～１．２ｍｍである。 The holding member 7 is formed of a metal plate in this embodiment. The thickness of the metal plate is such that the embedded portion 70 is easily embedded in the core material 2 of the first panel P1 and the fastener 11 is easily penetrated, for example, 0.5-1.2 mm.

保持部材７は、保持部７１として、耐火材６の第一面（詳しくは前面）を保持する第一保持部７１０と、第一保持部７１０と連続し、耐火材６の第二面（詳しくは右面）を保持する第二保持部７１１と、第二保持部７１１と連続し、耐火材６の第三面（詳しくは後面）を保持する第三保持部７１２と、を有する。保持部７１は、略Ｕ字状である。 The holding member 7 includes, as the holding portion 71, a first holding portion 710 that holds the first surface (specifically, the front surface) of the refractory material 6, and a first holding portion 710 that is continuous with the second surface (specifically, the front surface) of the refractory material 6. and a third holding portion 712 that is continuous with the second holding portion 711 and holds the third surface (specifically, the rear surface) of the refractory material 6 . The holding portion 71 is substantially U-shaped.

本実施形態では、第一保持部７１０、第二保持部７１１、及び第三保持部７１２のそれぞれは、矩形板状である。第一保持部７１０、第二保持部７１１、及び第三保持部７１２は、上下方向の長さが互いに同じである。第二保持部７１１は、前後方向に対して平行であり、第一保持部７１０及び第三保持部７１２は、左右方向に対して平行である。第一保持部７１０は、第二保持部７１１の前端から左方に突出し、第三保持部７１２は、第二保持部７１１の後端から左方に突出している。第一保持部７１０と第三保持部７１２は、互いに平行である。 In this embodiment, each of the first holding portion 710, the second holding portion 711, and the third holding portion 712 has a rectangular plate shape. The first holding portion 710, the second holding portion 711, and the third holding portion 712 have the same vertical length. The second holding portion 711 is parallel to the front-rear direction, and the first holding portion 710 and the third holding portion 712 are parallel to the left-right direction. The first holding portion 710 protrudes leftward from the front end of the second holding portion 711 , and the third holding portion 712 protrudes leftward from the rear end of the second holding portion 711 . The first holding portion 710 and the third holding portion 712 are parallel to each other.

第三保持部７１２には、固定具９が通される挿通部７３が設けられている。挿通部７３は、本実施形態では、第三保持部７１２を厚み方向（前後方向）に貫通する孔である。挿通部７３は、第三保持部７１２の上下方向の中央部に設けられている。 The third holding portion 712 is provided with an insertion portion 73 through which the fixture 9 is passed. In this embodiment, the insertion portion 73 is a hole penetrating through the third holding portion 712 in the thickness direction (front-rear direction). The insertion portion 73 is provided in the vertical central portion of the third holding portion 712 .

第一保持部７１０には、固定具９が通される第二挿通部７４が設けられている。第二挿通部７４は、本実施形態では、第一保持部７１０の一端（左端）から切り欠かれた矩形状の切り欠き孔である。第二挿通部７４は、第一保持部７１０の上下方向の中央部に位置し、かつ挿通部７３よりも左側（埋め込み部７０側）に位置している。そのため、挿通部７３及び第二挿通部７４には、埋め込み部７０の突出方向に対して交差する方向に、固定具９が挿通される。 The first holding portion 710 is provided with a second insertion portion 74 through which the fixture 9 is passed. In the present embodiment, the second insertion portion 74 is a rectangular notch hole cut from one end (left end) of the first holding portion 710 . The second insertion portion 74 is located in the vertical center of the first holding portion 710 and is located on the left side (the embedded portion 70 side) of the insertion portion 73 . Therefore, the fixture 9 is inserted through the insertion portion 73 and the second insertion portion 74 in a direction that intersects the projection direction of the embedding portion 70 .

保持部材７は、埋め込み部７０として、第一保持部７１０と第三保持部７１２のそれぞれから第二保持部７１１とは反対側（つまり左側）に延びた複数の挿入片７００を有する。複数の挿入片７００のそれぞれは、抜き止め構造を有する。 The holding member 7 has, as the embedded portion 70 , a plurality of insertion pieces 700 extending from each of the first holding portion 710 and the third holding portion 712 to the side opposite to the second holding portion 711 (that is, to the left). Each of the plurality of insertion pieces 700 has a retaining structure.

複数の挿入片７００は、本実施形態では、第一保持部７１０から延びた２つの挿入片７００と、第三保持部７１２から延びた２つの挿入片７００とで構成される。第一保持部７１０から延びた２つの挿入片７００は、第一保持部７１０と同一平面上に位置し、第一保持部７１０と前後方向の厚みが同じである。第三保持部７１２から延びた２つの挿入片７００は、第三保持部７１２と同一平面上に位置し、第三保持部７１２と前後方向の厚みが同じである。 The plurality of insert pieces 700 are composed of two insert pieces 700 extending from the first holding portion 710 and two insert pieces 700 extending from the third holding portion 712 in this embodiment. The two insertion pieces 700 extending from the first holding portion 710 are positioned on the same plane as the first holding portion 710 and have the same thickness as the first holding portion 710 in the front-rear direction. The two insertion pieces 700 extending from the third holding portion 712 are positioned on the same plane as the third holding portion 712 and have the same thickness as the third holding portion 712 in the front-rear direction.

複数の挿入片７００のそれぞれは、突出方向の先端面（左端面）がテーパー状である。複数の挿入片７００のそれぞれは、挿入片７００の突出方向に対して交差する方向（本実施形態では直交する方向）に突出した複数の突出部７０１を含む。本実施形態では、複数の突出部７０１のそれぞれは、三角形状である。複数の挿入片７００のそれぞれは、突出方向の先端側に位置する上下２つの突出部７０１と、突出方向の基端側に位置する上下２つの突出部７０１とを有する。４つの突出部７０１が、挿入片７００の抜け止め構造を構成している。このように、本実施形態の挿入片７００は、突出方向の先端面がテーパー状であり、複数の突出部７０１を有することで、第一パネルＰ１の芯材２に対して挿入しやすくて埋め込みやすく、かつ芯材２から抜け落ちにくい。 Each of the plurality of insertion pieces 700 has a tapered distal end surface (left end surface) in the projecting direction. Each of the plurality of insertion pieces 700 includes a plurality of protruding portions 701 protruding in a direction intersecting (perpendicular to in this embodiment) the direction in which the insertion piece 700 protrudes. In this embodiment, each of the plurality of protrusions 701 has a triangular shape. Each of the plurality of insertion pieces 700 has two upper and lower projecting portions 701 located on the distal end side in the projecting direction and two upper and lower projecting portions 701 located on the proximal end side in the projecting direction. The four protruding portions 701 constitute a retaining structure for the insertion piece 700 . As described above, the insertion piece 700 of the present embodiment has a tapered distal end surface in the projecting direction, and has a plurality of projecting portions 701, so that it can be easily inserted into the core material 2 of the first panel P1 and embedded. It is easy to remove, and it is hard to fall off from the core material 2. - 特許庁

移動規制部７２は、本実施形態では、第三保持部７１２から第一保持部７１０とは反対側に突出した突出片７２０で構成されている。突出片７２０は、第三保持部７１２の先端（左端）から後方に突出している。突出片７２０は、第三保持部７１２の先端のうち、２つの挿入片７００の間の部分から突出している。本実施形態では、突出片７２０は、矩形板状である。 In this embodiment, the movement restricting portion 72 is composed of a protruding piece 720 that protrudes from the third holding portion 712 to the side opposite to the first holding portion 710 . The protruding piece 720 protrudes rearward from the tip (left end) of the third holding portion 712 . The protruding piece 720 protrudes from the tip of the third holding part 712 between the two insertion pieces 700 . In this embodiment, the protruding piece 720 has a rectangular plate shape.

突出片７２０は、保持部材７の埋め込み部７０を芯材２に差し込んで埋め込む際に、第一凹部２０の底面に当たる（図１参照）。これにより、移動規制部７２は、保持部材７の差し込み方向への移動を規制することができる。 The protruding piece 720 hits the bottom surface of the first concave portion 20 when the embedded portion 70 of the holding member 7 is inserted into the core member 2 (see FIG. 1). Thereby, the movement restricting portion 72 can restrict the movement of the holding member 7 in the inserting direction.

２－２－４．固定具
図１に示すように、固定具９は、保持部７１を第一パネルＰ１の芯材２に固定する。固定具９は、ビス、又は釘等である。固定具９は、例えば、金属製である。 2-2-4. Fixing Tool As shown in FIG. 1, the fixing tool 9 fixes the holding portion 71 to the core member 2 of the first panel P1. The fixtures 9 are screws, nails, or the like. The fixture 9 is made of metal, for example.

固定具９は、挿通部７３と第二挿通部７４とを挿通するように、保持部７１に打ち込まれる。そのため、固定具９は、埋め込み部７０の突出方向（言い換えると差込方向）に対して交差する方向に、保持部７１及び耐火材６を貫通して、保持部７１及び耐火材６を芯材２に固定する。これにより、固定具９は、保持部材７の抜け止め構造としても機能する。 The fixture 9 is driven into the holding portion 71 so as to pass through the insertion portion 73 and the second insertion portion 74 . Therefore, the fixture 9 penetrates the holding portion 71 and the refractory material 6 in a direction intersecting the protruding direction (in other words, insertion direction) of the embedding portion 70, and inserts the holding portion 71 and the refractory material 6 into the core material. Set to 2. Thereby, the fixture 9 also functions as a retaining structure for the holding member 7 .

２－２－５．留め具
留め具１１は、第二耐火材１０を保持部７１に固定する。留め具１１は、例えば、ステープルである。なお、留め具１１は、ステープルに限定されない。例えば、留め具１１は、釘、ねじ等であってもよい。 2-2-5. Fastener The fastener 11 secures the second refractory material 10 to the holding portion 71 . The fastener 11 is, for example, a staple. Note that the fastener 11 is not limited to a staple. For example, fasteners 11 may be nails, screws, or the like.

本実施形態では、留め具１１は、第三保持部７１２の後面に重なるように配置された第二耐火材１０に打ち込まれることで、第二耐火材１０及び第三保持部７１２を貫通して、第二耐火材１０を保持部７１に固定する。留め具１１は、第三保持部７１２のうち、挿通部７３からずれた部分（例えば挿通部７３と第二保持部７１１との間の部分）に、第二耐火材１０を固定する。 In this embodiment, the fastener 11 is driven into the second refractory material 10 arranged so as to overlap the rear surface of the third holding part 712, and penetrates the second refractory material 10 and the third holding part 712. , to fix the second refractory material 10 to the holding part 71 . The fastener 11 fixes the second refractory material 10 to a portion of the third holding portion 712 shifted from the insertion portion 73 (for example, a portion between the insertion portion 73 and the second holding portion 711).

２－２－６．カバー材
カバー材１２は、第一パネルＰ１の厚み方向において、第二耐火材１０に対して耐火材６とは反対側に並ぶ。カバー材１２は、第二耐火材１０を覆って、第二耐火材１０の露出を防ぐ。 2-2-6. Cover Material The cover material 12 is arranged on the side opposite to the fire-resistant material 6 with respect to the second fire-resistant material 10 in the thickness direction of the first panel P1. The cover material 12 covers the second refractory material 10 to prevent exposure of the second refractory material 10 .

カバー材１２は、耐火材６と同じ上下長さを有する。カバー材１２は、上下方向に対して平行な長手方向を有する。カバー材１２は、長手方向にわたって断面形状が一定である。なお、カバー材１２は、耐火材６よりも短い複数の部材で構成されてもよい。この場合、複数の部材は、その長手方向の端面同士が突き合わさるように配置されるか、あるいは、その長手方向の端部同士が重なるように配置される。 The cover material 12 has the same vertical length as the refractory material 6 . The cover material 12 has a longitudinal direction parallel to the vertical direction. The cover material 12 has a constant cross-sectional shape over the longitudinal direction. Note that the cover material 12 may be composed of a plurality of members shorter than the fireproof material 6 . In this case, the plurality of members are arranged so that their longitudinal end surfaces face each other, or they are arranged so that their longitudinal ends overlap each other.

カバー材１２は、本実施形態では、１枚の金属板を折り曲げて形成されている。金属板の厚みは、例えば、０．５ｍｍである。金属板としては、例えば、塗装鋼板が用いられる。カバー材１２は、耐火性を有する。本実施形態では、カバー材１２の長手方向に直交する断面形状は、ハット型である。 The cover material 12 is formed by bending one metal plate in this embodiment. The thickness of the metal plate is, for example, 0.5 mm. As the metal plate, for example, a coated steel plate is used. The cover material 12 has fire resistance. In this embodiment, the cross-sectional shape orthogonal to the longitudinal direction of the cover material 12 is a hat shape.

カバー材１２は、第二耐火材１０に当たる左右一対の当て部１２０，１２１と、左右一対の当て部１２０，１２１の間に介在し、第二耐火材１０から離れる方向（つまり後方）に突出した突出部１２２と、を有する。 The cover material 12 is interposed between a pair of left and right contact portions 120, 121 that contact the second fireproof material 10 and a pair of left and right contact portions 120, 121, and protrudes in a direction away from the second fireproof material 10 (that is, rearward). and a protrusion 122 .

左右一対の当て部１２０，１２１が、第一凹部２０と第二凹部２１にそれぞれを収納されることで、カバー材１２はパネルＰ１，Ｐ２によって保持される。突出部１２２の左右の側壁のそれぞれは、平板部４２１，４１１と平行に位置する。 The cover material 12 is held by the panels P1 and P2 by housing the left and right abutting portions 120 and 121 in the first recess 20 and the second recess 21, respectively. Left and right side walls of the projecting portion 122 are positioned parallel to the flat plate portions 421 and 411, respectively.

２－３．耐火目地構造の施工方法
続いて、図５Ａから図５Ｄに示す本実施形態の耐火目地構造１の施工方法の一例について説明する。この施工方法は、目地材装着工程と、パネル設置工程と、を備える。 2-3. Construction Method for Fire-Resistant Joint Structure Next, an example of a construction method for the fire-resistant joint structure 1 of the present embodiment shown in FIGS. 5A to 5D will be described. This construction method includes a joint material installation process and a panel installation process.

目地材装着工程は、金属外皮３が第一パネルＰ１の下面を構成するように、第一パネルＰ１を平置きにした状態で行われる。以下では、第一パネルＰ１を平置きにした状態を基準に、上下方向及び左右方向を設定して、目地材装着工程について説明する。目地材装着工程は、工場又は施工現場にて行われる。 The joint material attaching step is performed with the first panel P1 laid flat so that the metal skin 3 constitutes the lower surface of the first panel P1. Below, the joint material attaching step will be described by setting the vertical direction and the horizontal direction on the basis of the state in which the first panel P1 is laid flat. A joint material installation process is performed in a factory or a construction site.

目地材装着工程では、まず、図５Ａに示すように、第一パネルＰ１の芯材２の第一凹部２０に耐火材６を挿入した後、第一凹部２０に保持部材７を挿入する。このとき、保持部材７の保持部７１の内側に耐火材６が差し込まれ、第一パネルＰ１の芯材２に保持部材７の埋め込み部７０が埋め込まれるように、第一凹部２０に保持部材７を挿入する。保持部材７の移動規制部７２が、第一凹部２０の底面に当たることで、保持部材７の挿入方向への移動が規制される。なお、保持部材７に耐火材６を取付けた後に芯材２の第一凹部２０に保持部材７を挿入しても良い。 In the joint material installation step, first, as shown in FIG. 5A, the fireproof material 6 is inserted into the first recess 20 of the core material 2 of the first panel P1, and then the holding member 7 is inserted into the first recess 20. As shown in FIG. At this time, the holding member 7 is inserted into the first concave portion 20 so that the refractory material 6 is inserted inside the holding portion 71 of the holding member 7 and the embedded portion 70 of the holding member 7 is embedded in the core member 2 of the first panel P1. insert The movement of the holding member 7 in the insertion direction is regulated by the movement regulating portion 72 of the holding member 7 coming into contact with the bottom surface of the first recess 20 . Note that the holding member 7 may be inserted into the first concave portion 20 of the core member 2 after the refractory material 6 is attached to the holding member 7 .

次いで、図５Ｂに示すように、保持部７１の挿通部７３に、斜め上方から固定具９を打ち込む。固定具９は、保持部７１の挿通部７３と第二挿通部７４とを通るように、保持部７１に打ち込まれる。これにより、保持部７１及び保持部７１によって保持された耐火材６が、固定具９によって第一パネルＰ１の芯材２に固定される。 Next, as shown in FIG. 5B, the fastener 9 is driven into the insertion portion 73 of the holding portion 71 from obliquely above. The fixture 9 is driven into the holding portion 71 so as to pass through the insertion portion 73 and the second insertion portion 74 of the holding portion 71 . As a result, the holding portion 71 and the refractory material 6 held by the holding portion 71 are fixed to the core member 2 of the first panel P1 by the fixture 9 .

上述した方法で、第一パネルＰ１に複数の保持部材７を装着する。複数の保持部材７は、第一パネルＰ１の長さ方向に間隔をおいて配置される。これにより、耐火材６は、長手方向の複数の部分が、複数の保持部材７によって保持される。なお、固定具９による保持部７１の固定は、複数の保持部材７のうちの一部にだけ行ってもよい。 A plurality of holding members 7 are attached to the first panel P1 in the manner described above. A plurality of holding members 7 are arranged at intervals in the longitudinal direction of the first panel P1. As a result, the refractory material 6 is held by a plurality of holding members 7 at a plurality of portions in the longitudinal direction. Note that the fixing of the holding portion 71 by the fixture 9 may be performed only on some of the plurality of holding members 7 .

次いで、図５Ｃに示すように、第二耐火材１０を耐火材６及び第三保持部７１２の上面に載せ、第二耐火材１０の一部（左端部）を第一凹部２０に収容する。次いで、第二耐火材１０の上方から留め具１１を打ち込んで、第二耐火材１０を保持部材７に固定する。これにより、第二耐火材１０が保持部材７によって保持される。 Next, as shown in FIG. 5C , the second refractory material 10 is placed on the upper surfaces of the refractory material 6 and the third holding portion 712 , and a portion (left end) of the second refractory material 10 is accommodated in the first recess 20 . Next, the fastener 11 is driven into the second fireproof material 10 from above to fix the second fireproof material 10 to the holding member 7 . Thereby, the second refractory material 10 is held by the holding member 7 .

本実施形態では、目地材装着工程のうち、図５Ａ、Ｂに示す工程は、工場で行われ、図５Ｃに示す工程は、施工現場にて行われる。 5A and 5B are performed at a factory, and the step illustrated in FIG. 5C is performed at a construction site among the joint material attaching steps in the present embodiment.

図５Ｃに示すように、第一パネルＰ１の第一凹部２０に、耐火材６、保持部材７、及び第二耐火材１０を装着したら、第一パネルＰ１を平置き姿勢から起立姿勢へと建て起こして、パネル設置工程を行う。パネル設置工程は、施工現場にて行われる。 As shown in FIG. 5C, after the refractory material 6, the holding member 7, and the second refractory material 10 are attached to the first concave portion 20 of the first panel P1, the first panel P1 is erected from the flat position to the standing position. Get up and do the panel installation process. The panel installation process is performed at the construction site.

パネル設置工程では、図５Ｄに示すように、起立姿勢の第一パネルＰ１を、起立姿勢の第二パネルＰ２の側方（左方）に配置する。このとき、カバー材１２を第二耐火材１０の後方に配置し、第二パネルＰ２の側面の第二凹部２１に縦目地材５（耐火材６、保持部材７、第二耐火材１０、及びカバー材１２）が収まるように設置する。 In the panel installation step, as shown in FIG. 5D, the first panel P1 in the upright posture is arranged to the side (left side) of the second panel P2 in the upright posture. At this time, the cover material 12 is arranged behind the second refractory material 10, and the vertical joint material 5 (the refractory material 6, the holding member 7, the second refractory material 10, and Install so that the cover material 12) can be accommodated.

上述した方法で二枚のパネルＰ１，Ｐ２を設置することで、二枚のパネルＰ１，Ｐ２の間に縦目地材５（耐火材６、保持部材７、第二耐火材１０及びカバー材１２）が挟み込まれて、耐火目地構造１が形成される。耐火目地構造１では、二枚のパネルＰ１，Ｐ２は、止水パッキン８同士が突き合わさる。 By installing the two panels P1 and P2 by the method described above, the vertical joint material 5 (the fireproof material 6, the holding member 7, the second fireproof material 10 and the cover material 12) between the two panels P1 and P2 are sandwiched to form the refractory joint structure 1. In the fireproof joint structure 1, the two panels P1 and P2 have the waterproof packings 8 butted against each other.

２－４．作用効果
以上説明した本実施形態の耐火目地構造１では、第一パネルＰ１の側面に装着される耐火材６を、第一パネルＰ１の側面の第一凹部２０に収容したうえで、保持部材７によって保持することができる。ここで、本実施形態の耐火目地構造１では、保持部材７の埋め込み部７０を第一パネルＰ１の内側の芯材２に埋め込むことができるため、保持部材７及び保持部材７によって保持される耐火材６を位置決めしやすい。そのため、本実施形態の耐火目地構造１では、縦目地材５（耐火材６及び保持部材７）を装着した第一パネルＰ１と第二パネルＰ２とを建て込む際に、第二パネルＰ２の第二凹部２１に縦目地材５を差し込みやすく、第二パネルＰ２との接触により縦目地材５が位置ずれを起こすことを抑制できて、耐火性能を確保しやすい。 2-4. Effect In the fireproof joint structure 1 of the present embodiment described above, the fireproof material 6 attached to the side surface of the first panel P1 is accommodated in the first concave portion 20 on the side surface of the first panel P1, and the holding member 7 can be held by Here, in the fireproof joint structure 1 of the present embodiment, since the embedded portion 70 of the holding member 7 can be embedded in the core member 2 inside the first panel P1, the holding member 7 and the fireproof joint structure held by the holding member 7 It is easy to position the material 6. Therefore, in the fireproof joint structure 1 of the present embodiment, when erecting the first panel P1 and the second panel P2 equipped with the vertical joint material 5 (the fireproof material 6 and the holding member 7), the second panel P2 The vertical joint material 5 can be easily inserted into the two recesses 21, and the positional deviation of the vertical joint material 5 due to contact with the second panel P2 can be suppressed, and the fire resistance can be easily secured.

また、本実施形態の耐火目地構造１では、埋め込み部７０が抜け止め構造（複数の突出部７０１）を有しているため、芯材２から埋め込み部７０が抜けにくくて、保持部材７のがたつきを抑えやすい。 In addition, in the refractory joint structure 1 of the present embodiment, since the embedded portion 70 has a retaining structure (a plurality of protruding portions 701), the embedded portion 70 is difficult to come off from the core material 2, and the holding member 7 does not come loose. It is easy to suppress sagging.

また、本実施形態の耐火目地構造１では、保持部材７の保持部７１を固定具９で芯材２に固定するため、保持部材７のがたつきを更に抑えやすい。 Further, in the fireproof joint structure 1 of the present embodiment, since the holding portion 71 of the holding member 7 is fixed to the core member 2 by the fixture 9, rattling of the holding member 7 can be further suppressed.

また、本実施形態の耐火目地構造１では、第一パネルＰ１の厚み方向において、耐火材６と並んで位置する第二耐火材１０を有するため、耐火材６が複数の部材で構成され、互いに突き合わさる突き合わせ部が生じる場合には、この突き合わせ部を第二耐火材１０で覆うことができ、突き合わせ部における耐火性の低下を抑制しやすい。 Further, in the fireproof joint structure 1 of the present embodiment, the second fireproof material 10 is positioned side by side with the fireproof material 6 in the thickness direction of the first panel P1. If a butted portion occurs, the butted portion can be covered with the second refractory material 10, thereby easily suppressing a decrease in fire resistance at the butted portion.

また、本実施形態の耐火目地構造１では、第二耐火材１０を保持部７１に固定する留め具１１を有するため、保持部材７によって耐火材６と第二耐火材１０の両方を保持できる。 In addition, since the fireproof joint structure 1 of the present embodiment has the fastener 11 that fixes the second fireproof material 10 to the holding portion 71, both the fireproof material 6 and the second fireproof material 10 can be held by the holding member 7.

また、本実施形態の耐火目地構造１では、保持部材７が移動規制部７２を有するため、保持部材７の埋め込み部７０を芯材２に対して埋め込む際に、移動規制部７２が芯材２に当たって、芯材２に保持部材７が所定以上埋め込まれることを抑制できる。そのため、本実施形態の耐火目地構造１では、第一パネルＰ１の側面における保持部材７及び耐火材６の位置が安定しやすい。 Further, in the fireproof joint structure 1 of the present embodiment, since the holding member 7 has the movement restricting portion 72 , when the embedding portion 70 of the holding member 7 is embedded in the core material 2 , the movement restricting portion 72 may move toward the core material 2 . Therefore, it is possible to prevent the holding member 7 from being embedded in the core material 2 beyond a predetermined amount. Therefore, in the fireproof joint structure 1 of this embodiment, the positions of the holding member 7 and the fireproof material 6 on the side surface of the first panel P1 are likely to be stable.

また、本実施形態の耐火目地構造１では、固定具９が保持部材７の埋め込み部７０の突出方向（言い換えると挿入方向）に対して交差する方向に延びて、保持部７１を芯材２に固定しているため、固定具９によっても保持部材７の抜け止めを行うことができる。 In addition, in the fireproof joint structure 1 of the present embodiment, the fixture 9 extends in a direction intersecting the projection direction (in other words, the insertion direction) of the embedding portion 70 of the holding member 7, so that the holding portion 71 is attached to the core member 2. Since it is fixed, the holding member 7 can be prevented from coming off by the fixture 9 as well.

また、本実施形態の耐火目地構造１では、保持部材７が金属板で形成されているため、火災時に保持部材７が燃えて変形、破損等しにくくて、保持部材７による耐火材６の保持を維持しやすい。 In addition, in the refractory joint structure 1 of the present embodiment, since the holding member 7 is formed of a metal plate, the holding member 7 is less likely to burn, deform, or break in the event of a fire. easy to maintain.

また、本実施形態の耐火目地構造１では、縦目地材５が、耐火材６と第二耐火材１０を含み、耐火材６及び第二耐火材１０が第一パネルＰ１の芯材２よりも耐火性が高い。そのため、本実施形態の耐火目地構造１では、パネルＰ１，Ｐ２の間の目地における耐火性を耐火材６及び第二耐火材１０によって確保しやすい。 In addition, in the fireproof joint structure 1 of the present embodiment, the vertical joint material 5 includes the fireproof material 6 and the second fireproof material 10, and the fireproof material 6 and the second fireproof material 10 are stronger than the core material 2 of the first panel P1. Highly fire resistant. Therefore, in the fire-resistant joint structure 1 of the present embodiment, the fire-resistant material 6 and the second fire-resistant material 10 can easily ensure the fire resistance of the joint between the panels P1 and P2.

また、本実施形態の耐火目地構造１では、保持部材７の保持部７１が耐火材６を３方から覆うように保持するため、保持部材７による耐火材６の保持が安定しやすい。 In addition, in the fireproof joint structure 1 of the present embodiment, the holding portion 71 of the holding member 7 holds the fireproof material 6 so as to cover the fireproof material 6 from three sides.

また、本実施形態の耐火目地構造１では、カバー材１２によって第二耐火材１０を覆うことができるため、二枚のパネルＰ１，Ｐ２間から第二耐火材１０が露出することを防ぐことができる。 In addition, in the fireproof joint structure 1 of the present embodiment, since the cover material 12 can cover the second fireproof material 10, it is possible to prevent the second fireproof material 10 from being exposed between the two panels P1 and P2. can.

また、本実施形態の耐火目地構造１では、カバー材１２の左右一対の当て部１２０，１２１を第一凹部２０及び第二凹部２１に収納して、パネルＰ１，Ｐ２でカバー材１２を保持することができるため、カバー材１２の位置ズレも防ぎやすい。 In addition, in the fireproof joint structure 1 of the present embodiment, the pair of left and right contact portions 120 and 121 of the cover material 12 are accommodated in the first recess 20 and the second recess 21, and the cover material 12 is held by the panels P1 and P2. Therefore, it is easy to prevent the cover material 12 from being displaced.

また、本実施形態の耐火目地構造１では、縦目地材５が金属製のカバー材１２を含むことで、縦目地材５自体の耐火性の向上を図りやすい。 In addition, in the fire-resistant joint structure 1 of the present embodiment, since the vertical joint material 5 includes the metal cover material 12, the fire resistance of the vertical joint material 5 itself can be easily improved.

また、本実施形態の耐火目地構造１では、カバー材１２がハット型であることで、カバー材１２が持ち運びしやすく、第二耐火材１０にカバー材１２を重ねる施工が行いやすい。 In addition, in the fireproof joint structure 1 of the present embodiment, since the cover material 12 is hat-shaped, the cover material 12 is easy to carry, and the construction of stacking the cover material 12 on the second fireproof material 10 is easy.

３．変形例
続いて、上述した耐火目地構造１の変形例について説明する。なお、以下に示す各変形例は適宜組み合わせ可能である。 3. Modification Next, a modification of the fireproof joint structure 1 described above will be described. In addition, each modification shown below can be combined suitably.

保持部材７は、第一パネルＰ１の芯材２に埋め込まれる埋め込み部７０と、耐火材６を保持する保持部７１と、を有するものであればよく、図４Ａに示す構造に限定されない。 The holding member 7 is not limited to the structure shown in FIG. 4A as long as it has an embedded portion 70 embedded in the core material 2 of the first panel P1 and a holding portion 71 that holds the refractory material 6 .

埋め込み部７０は、抜け止め構造を有さなくてもよい。また、保持部材７は、移動規制部７２を有さなくてもよい。 The embedded portion 70 may not have a retaining structure. Also, the holding member 7 may not have the movement restricting portion 72 .

縦目地材５は、保持部材７の外側に位置する第二耐火材１０を有さなくてもよく、この場合、留め具１１及びカバー材１２は不要である。 The longitudinal joint material 5 may not have the second refractory material 10 located outside the retaining member 7, in which case the fasteners 11 and the cover material 12 are not required.

また、縦目地材５は、留め具１１を有さなくてもよく、第二耐火材１０は耐火材６に接着等によって固定されてもよいし、第二耐火材１０は第一パネルＰ１と第二パネルＰ２とで挟持することで耐火材６に対して固定してもよい。 Further, the vertical joint material 5 may not have the fastener 11, the second fireproof material 10 may be fixed to the fireproof material 6 by adhesion or the like, and the second fireproof material 10 may be attached to the first panel P1. It may be fixed to the fireproof material 6 by sandwiching it with the second panel P2.

また、縦目地材５は、固定具９を有さなくてもよく、保持部材７は、埋め込み部７０を芯材２に埋め込むことだけで芯材２に固定されてもよい。この場合、保持部材７は、挿通部７３，７４を有さなくてもよい。 Further, the vertical joint material 5 may not have the fixture 9, and the holding member 7 may be fixed to the core material 2 only by embedding the embedded portion 70 in the core material 2. In this case, the holding member 7 does not have to have the insertion portions 73 and 74 .

また、保持部材７は、耐火材６のみを囲んで保持するものに限らず、耐火材６と第二耐火材１０の両方を囲んで保持するように構成されてもよい。また、保持部材７は、金属製に限らず、樹脂成型品であってもよい。 Moreover, the holding member 7 is not limited to surrounding and holding only the refractory material 6 , and may be configured to surround and hold both the refractory material 6 and the second refractory material 10 . Moreover, the holding member 7 is not limited to being made of metal, and may be a resin molded product.

また、カバー材１２は、耐火材６を覆うことができる部材であればよく、上述した材質及び形状のものに限定されない。例えば、カバー材１２は、断面ハット状に限らず、平板状であってもよい。また、カバー材１２は、金属製に限らず、その他の耐火性を有する部材で形成されてもよいし、耐火性を有さない部材で形成されてもよい。 Moreover, the cover material 12 is not limited to the material and shape described above as long as it is a member capable of covering the refractory material 6 . For example, the cover material 12 is not limited to a hat-shaped cross section, and may be flat. In addition, the cover material 12 is not limited to being made of metal, and may be formed of other members having fire resistance, or may be formed of members having no fire resistance.

また、縦目地材５にカバー材１２を有さなくてもよい。 Also, the vertical joint material 5 may not have the cover material 12 .

また、図５ＡからＣに示す目地材装着工程は、全て工場で行われてもよく、図５Ｄに示すパネル設置工程のみ施工現場で行われてもよい。 5A to 5C may all be performed at the factory, or only the panel installation step illustrated in FIG. 5D may be performed at the construction site.

（第二実施形態）
１．詳細
次に、第二実施形態の耐火目地構造１について、図６及び図７ＡからＤに基づいて説明する。なお、本実施形態の耐火目地構造１の基本的な構成及び施工方法は、第一実施形態と共通であるから、第一実施形態と共通する構成については、図面に同じ符号を付して説明を省略する。 (Second embodiment)
1. Details Next, the fireproof joint structure 1 of the second embodiment will be described with reference to FIGS. 6 and 7A to 7D. Since the basic configuration and construction method of the fireproof joint structure 1 of the present embodiment are common to those of the first embodiment, the configurations common to those of the first embodiment will be described by attaching the same reference numerals to the drawings. omitted.

１－１．保持部材
保持部材７は、埋め込み部７０と、保持部７１と、を有し、移動規制部７２（図４Ａ参照）を有さない。 1-1. Holding Member The holding member 7 has an embedded portion 70 and a holding portion 71 and does not have a movement restricting portion 72 (see FIG. 4A).

保持部材７は、保持部７１として、第一保持部７１０、第二保持部７１１、及び第三保持部７１２を有する。第二挿通部７４は、本実施形態では、第一保持部７１０の一端（左端）のうち、２つの挿入片７００の間の部分に上下方向に全長にわたって位置している。第一保持部７１０のうち第二挿通部７４の上側に対向する面は、上側の挿入片７００の下面と面一であり、第一保持部７１０のうち第二挿入部７４の下側に対向する面は、下側の挿入片７００の上面と面一である。 The holding member 7 has a first holding portion 710 , a second holding portion 711 and a third holding portion 712 as the holding portion 71 . In the present embodiment, the second insertion portion 74 is positioned over the entire length in the vertical direction in a portion between the two insertion pieces 700 on one end (left end) of the first holding portion 710 . The surface of the first holding portion 710 that faces the upper side of the second insertion portion 74 is flush with the lower surface of the upper insertion piece 700 and faces the lower side of the second insertion portion 74 of the first holding portion 710. The surface to be inserted is flush with the upper surface of the lower insertion piece 700 .

保持部材７は、埋め込み部７０として、第一保持部７１０から延びた上下２つの挿入片７００と、第三保持部７１２から延びた上下２つの挿入片７００とを有する。 The holding member 7 has, as the embedded portion 70 , two upper and lower insertion pieces 700 extending from the first holding portion 710 and two upper and lower insertion pieces 700 extending from the third holding portion 712 .

上側の挿入片７００のそれぞれは、突出方向の先端面（左端面）が、下側の部分ほど突出方向と反対側（右側）に位置するように傾斜した先鋭状である。下側の挿入片７００のそれぞれは、突出方向の先端面（左端面）が上側の部分ほど突出方向と反対側（右側）に位置するように傾斜した先鋭状である。上下２つの挿入片７００のそれぞれは、互いに近づく方向に突出した１つの突出部７０１を含む。本実施形態では、各突出部７０１は、三角形状である。上下２つの挿入片７００のそれぞれは、突出方向の先端部に突出部７０１を有する。突出部７０１が、挿入片７００の抜け止め構造を構成している。 Each of the upper insertion pieces 700 has a tip end surface (left end surface) in the projecting direction that is inclined so that the lower part is located on the opposite side (right side) of the projecting direction. Each of the lower insertion pieces 700 has a tip end surface (left end surface) in the projecting direction that is inclined so that the upper portion is located on the opposite side (right side) of the projecting direction. Each of the two upper and lower insertion pieces 700 includes one protruding portion 701 that protrudes toward each other. In this embodiment, each protrusion 701 is triangular. Each of the two upper and lower insertion pieces 700 has a protruding portion 701 at the tip in the protruding direction. The projecting portion 701 constitutes a retaining structure for the insertion piece 700 .

上側の挿通片７００は、保持部７１０，７１２の上端部から突出し、下側の挿入片７００は、保持部７１０，７１２の下端部から突出している。第一保持部７１０の上面と、第一保持部７１０から突出する上側の挿入片７００の上面とは面一に形成されている。また、第一保持部７１０の下面と、第一保持部７１０から突出する下側の挿入片７００の下面とは面一に形成されている。第三保持部７１２と第三保持部７１２から突出する上下２つの挿入片７００も、同様の関係に配置されている。 The upper inserting piece 700 protrudes from the upper ends of the holding portions 710 and 712 , and the lower inserting piece 700 protrudes from the lower ends of the holding portions 710 and 712 . The upper surface of the first holding portion 710 and the upper surface of the upper insertion piece 700 projecting from the first holding portion 710 are flush with each other. In addition, the lower surface of the first holding portion 710 and the lower surface of the lower insertion piece 700 projecting from the first holding portion 710 are flush with each other. The third holding portion 712 and the upper and lower two insertion pieces 700 protruding from the third holding portion 712 are also arranged in the same relationship.

１－２．作用効果
以上説明した本実施形態の耐火目地構造１では、保持部材７の上下２つの挿入片７００が、互いに近づく方向に突出する突出部７０１を有するため、保持部材７を掴んで施工する際に、突出部７０１に手が当たり難くて、安全性が向上している。また、本実施形態の耐火目地構造１の保持部材７は、第一実施形態の保持部材７に比べて、各部分の形状が簡素化されており、製造しやすい。 1-2. Effect In the fireproof joint structure 1 of the present embodiment described above, the two upper and lower insertion pieces 700 of the holding member 7 have protrusions 701 that protrude in a direction toward each other. , the projecting portion 701 is less likely to be touched by hand, and safety is improved. Moreover, the holding member 7 of the fire-resistant joint structure 1 of the present embodiment has a simpler shape of each portion than the holding member 7 of the first embodiment, and is easy to manufacture.

２．変形例
以上説明した第二実施形態の耐火目地構造１も、上述した第一実施形態の耐火目地構造１の変形例と、適宜組み合わせ可能である。 2. Modification The fire-resistant joint structure 1 of the second embodiment described above can also be appropriately combined with the modification of the fire-resistant joint structure 1 of the first embodiment described above.

また、保持部材７は、移動規制部７２を有してもよい。この場合、移動規制部７２は、例えば、第一実施形態の移動規制部７２と同様の位置に設けられてもよい。 Moreover, the holding member 7 may have a movement restricting portion 72 . In this case, the movement restricting portion 72 may be provided at the same position as the movement restricting portion 72 of the first embodiment, for example.

また、各挿入片７００には、挿入片７００の突出した方向に間隔をおいて並ぶように複数の突出部７０１が設けられてもよい。 Further, each insertion piece 700 may be provided with a plurality of protrusions 701 arranged at intervals in the direction in which the insertion piece 700 protrudes.

（まとめ）
以上説明した第一、二実施形態及びその変形例の耐火目地構造（１）のように、第一態様の耐火目地構造（１）は、下記の構成を備える。 (summary)
Like the fire-resistant joint structure (1) of the first and second embodiments and their modified examples described above, the fire-resistant joint structure (1) of the first mode has the following configuration.

すなわち、第一態様の耐火目地構造（１）は、第一パネル（Ｐ１）と、第一パネル（Ｐ１）と隣接する第二パネル（Ｐ２）と、第一パネル（Ｐ１）と第二パネル（Ｐ２）の間に挟み込まれる縦目地材（５）と、を備える。第一パネル（Ｐ１）は、第二パネル（Ｐ２）に対向する側面に、縦目地材（５）の一部が収容される第一凹部（２０）を有する。第二パネル（Ｐ２）は、第一パネル（Ｐ１）に対向する側面に、縦目地材（５）の他の一部が収容される第二凹部（２１）を有する。縦目地材（５）は、第一凹部（２０）及び第二凹部（２１）に収容される耐火材（６）と、耐火材（６）を第一パネル（Ｐ１）に保持する保持部材（７）と、を有する。第一パネル（Ｐ１）は、第一パネル（Ｐ１）の内側に芯材（２）を有する。保持部材（７）は、芯材（２）に埋め込まれる埋め込み部（７０）と、耐火材（６）を保持する保持部（７１）と、を有する。 That is, the fireproof joint structure (1) of the first aspect includes the first panel (P1), the second panel (P2) adjacent to the first panel (P1), the first panel (P1) and the second panel ( A vertical joint material (5) sandwiched between P2). The first panel (P1) has, on the side facing the second panel (P2), a first recess (20) in which part of the vertical joint material (5) is accommodated. The second panel (P2) has a second recess (21) on the side facing the first panel (P1) in which another part of the vertical joint material (5) is accommodated. The vertical joint material (5) consists of a refractory material (6) accommodated in the first recess (20) and the second recess (21), and a holding member ( 7) and The first panel (P1) has a core (2) inside the first panel (P1). The holding member (7) has an embedded portion (70) embedded in the core material (2) and a holding portion (71) holding the refractory material (6).

上記構成を備える第一態様の耐火目地構造（１）では、第一パネル（Ｐ１）の側面に装着される耐火材（６）を、第一パネル（Ｐ１）の側面の第一凹部（２０）に収容したうえで、保持部材（７）によって保持することができる。ここで、第一態様の耐火目地構造（１）では、保持部材（７）の埋め込み部（７０）を第一パネル（Ｐ１）の内側の芯材（２）に埋め込むことができるため、保持部材（７）及び保持部材（７）によって保持される耐火材（６）を位置決めしやすい。そのため、第一態様の耐火目地構造（１）では、縦目地材（５）（耐火材（６）及び保持部材（７））を装着した第一パネル（Ｐ１）と第二パネル（Ｐ２）とを建て込む際に、第二パネル（Ｐ２）の第二凹部（２１）に縦目地材（５）を差し込みやすく、第二パネル（Ｐ２）との接触により縦目地材（５）が位置ずれを起こすことを抑制できる。これにより、第一態様の耐火目地構造（１）では、施工時の縦目地材（５）の位置ずれを抑制できる。 In the fireproof joint structure (1) of the first aspect having the above configuration, the fireproof material (6) attached to the side surface of the first panel (P1) is placed in the first concave portion (20) on the side surface of the first panel (P1). It can be held by the holding member (7) after being housed in the . Here, in the fireproof joint structure (1) of the first aspect, since the embedded part (70) of the holding member (7) can be embedded in the core material (2) inside the first panel (P1), the holding member (7) and the refractory material (6) held by the holding member (7) is easy to position. Therefore, in the fireproof joint structure (1) of the first aspect, the first panel (P1) and the second panel (P2) equipped with the vertical joint material (5) (refractory material (6) and the holding member (7)) When erecting, it is easy to insert the vertical joint material (5) into the second recess (21) of the second panel (P2), and the vertical joint material (5) is displaced due to contact with the second panel (P2). You can prevent it from happening. Thereby, in the fire-resistant joint structure (1) of the first aspect, it is possible to suppress positional displacement of the vertical joint material (5) during construction.

また、上述した第一、二実施形態及びその変形例の耐火目地構造（１）のように、第二態様の耐火目地構造（１）は、第一態様の構成に加えて、下記の構成を付加的に備える。 Further, like the fire-resistant joint structure (1) of the first and second embodiments and their modifications described above, the fire-resistant joint structure (1) of the second mode has the following configuration in addition to the configuration of the first mode. Prepare additionally.

すなわち、第二態様の耐火目地構造（１）では、埋め込み部（７０）は、芯材（２）から埋め込み部（７０）が抜けることを抑える抜け止め構造を有する。 That is, in the fireproof joint structure (1) of the second aspect, the embedded part (70) has a retaining structure that prevents the embedded part (70) from coming off from the core material (2).

上記構成を備える第二態様の耐火目地構造（１）では、埋め込み部（７０）が芯材（２）から抜けにくくて、保持部材（７）によって耐火材（６）を安定して保持しやすい。 In the refractory joint structure (1) of the second aspect having the above configuration, the embedded part (70) is difficult to come off from the core material (2), and the refractory material (6) is easily held stably by the holding member (7). .

また、上述した第二実施形態及びその変形例の耐火目地構造（１）のように、第三態様の耐火目地構造（１）は、第二態様の構成に加えて、下記の構成を付加的に備える。 Further, like the fire-resistant joint structure (1) of the second embodiment and its modification described above, the fire-resistant joint structure (1) of the third aspect has the following configuration in addition to the configuration of the second aspect. Prepare for.

すなわち、第三態様の耐火目地構造（１）では、埋め込み部（７０）は、保持部（７１）から突出した一対の挿入片（７００）を有する。一対の挿入片（７００）は、互いに近づく方向に突出した突出部（７０１）を含む。突出部（７０１）が、前記抜け止め構造を構成する。 That is, in the fireproof joint structure (1) of the third aspect, the embedded portion (70) has a pair of insert pieces (700) projecting from the holding portion (71). A pair of insertion pieces (700) includes protrusions (701) that protrude toward each other. A protruding portion (701) constitutes the retaining structure.

上記構成を備える第三態様の耐火目地構造（１）では、突出部（７０１）が互いに近づく方向に突出することで、芯材（２）から埋め込み部（７０）が抜けることを抑えることができ、加えて、使用者が保持部材（７）を掴んで施工するときに突出部（７０１）に接触しにくくて、安全性が向上している。 In the refractory joint structure (1) of the third aspect having the above configuration, the protrusions (701) protrude in a direction toward each other, so that the embedding part (70) can be prevented from falling out of the core material (2). In addition, it is difficult for the user to touch the projecting part (701) when gripping the holding member (7) and constructing it, thus improving safety.

また、上述した第一、二実施形態及びその変形例の耐火目地構造（１）のように、第四態様の耐火目地構造（１）は、第一から第三のいずれか１つの態様の構成に加えて、下記の構成を付加的に備える。 Further, like the fire-resistant joint structures (1) of the first and second embodiments and their modifications described above, the fire-resistant joint structure (1) of the fourth aspect has the configuration of any one of the first to third aspects. In addition, the following configuration is additionally provided.

すなわち、第四態様の耐火目地構造（１）では、縦目地材（５）は、保持部（７１）を芯材（２）に固定する固定具（９）を更に有する。 That is, in the fire-resistant joint structure (1) of the fourth aspect, the vertical joint material (5) further has a fixture (9) for fixing the holding part (71) to the core material (2).

上記構成を備える第四態様の耐火目地構造（１）では、固定具（９）によって保持部（７１）を芯材（２）に固定することができるため、耐火材（６）の位置ズレを更に抑えやすい。 In the refractory joint structure (1) of the fourth aspect having the above configuration, since the holding part (71) can be fixed to the core material (2) by the fixture (9), the positional deviation of the refractory material (6) can be prevented. easier to suppress.

また、上述した第一、二実施形態及びその変形例の耐火目地構造（１）のように、第五態様の耐火目地構造（１）は、第一から第四のいずれか一つの態様の構成に加えて、下記の構成を付加的に備える。 Further, like the fire-resistant joint structures (1) of the first and second embodiments and their modifications described above, the fire-resistant joint structure (1) of the fifth aspect has the configuration of any one of the first to fourth aspects. In addition, the following configuration is additionally provided.

すなわち、第五態様の耐火目地構造（１）では、縦目地材（５）は、第一パネル（Ｐ１）の厚み方向において、耐火材（６）と並んで位置する第二耐火材（１０）と、第二耐火材（１０）を保持部（７１）に固定する留め具（１１）と、を更に有する。 That is, in the fire-resistant joint structure (1) of the fifth aspect, the vertical joint material (5) is the second fire-resistant material (10) positioned side by side with the fire-resistant material (6) in the thickness direction of the first panel (P1). and a fastener (11) that secures the second refractory material (10) to the retainer (71).

上記構成を備える第五態様の耐火目地構造（１）では、第二耐火材（１０）を留め具（１１）によって保持部（７１）に固定することができるため、第二耐火材（１０）も保持部材（７）によって保持することができて、第二耐火材（１０）の位置ズレも抑えやすい。 In the refractory joint structure (1) of the fifth aspect having the above configuration, the second refractory material (10) can be fixed to the holding part (71) by the fastener (11), so the second refractory material (10) can be held by the holding member (7), and positional displacement of the second refractory material (10) can be easily suppressed.

以上、本開示を添付図面に示す形態に基づいて説明したが、本開示は上記形態の一例にすぎず、本開示の意図する範囲内であれば、適宜の設計変更が可能である。 Although the present disclosure has been described above based on the embodiments shown in the accompanying drawings, the present disclosure is merely an example of the above embodiments, and appropriate design changes are possible within the intended scope of the present disclosure.

１耐火目地構造
２芯材
２０第一凹部
２１第二凹部
５縦目地材
６耐火材
７保持部材
７０埋め込み部
７００挿入片
７０１突出部
７１保持部
９固定具
１０第二耐火材
１１留め具
Ｐ１第一パネル
Ｐ２第二パネル 1 Fireproof joint structure 2 Core material 20 First recess 21 Second recess 5 Vertical joint material 6 Fireproof material 7 Holding member 70 Embedded part 700 Insert piece 701 Protruding part 71 Holding part 9 Fixing tool 10 Second fireproof material 11 Fastener P1 One panel P2 Second panel

Claims

a first panel;
a second panel adjacent to the first panel;
a vertical joint material sandwiched between the first panel and the second panel,
The first panel has a first recess in which a part of the vertical joint material is accommodated on a side surface facing the second panel,
The second panel has a second recess in which another part of the vertical joint material is accommodated on a side surface facing the first panel,
The vertical joint material is
a refractory material accommodated in the first recess and the second recess;
a holding member that holds the refractory material to the first panel;
The first panel has a core inside the first panel,
The holding member is
an embedded portion embedded in the core material;
and a holding part that holds the refractory material,
A fireproof joint structure characterized by:

The embedded portion is
Having a retaining structure that suppresses the embedded portion from coming off from the core material,
The fireproof joint structure according to claim 1, characterized in that:

The embedded portion is
Having a pair of insertion pieces projecting from the holding portion,
The pair of insertion pieces includes protrusions that protrude in a direction toward each other,
wherein the protruding portion constitutes the retaining structure;
The fireproof joint structure according to claim 2, characterized in that:

The vertical joint material is
It further has a fixture that fixes the holding part to the core material,
The fireproof joint structure according to any one of claims 1 to 3, characterized in that:

The vertical joint material is
a second refractory material positioned alongside the refractory material in the thickness direction of the first panel;
a fastener that secures the second refractory material to the retainer;
The fireproof joint structure according to any one of claims 1 to 4, characterized in that: