Refractory structure

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

[Technical Field]

[0001] The present disclosure relates to fire-resistant joint structures. [Background technology]

[0002] Patent Document 1 describes a fire-resistant wall in which 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, with the composite fire-resistant joint material sandwiched between the two fire-resistant panels. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-207469 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the fire-resistant wall described in Patent Document 1 mentioned above, when a fire-resistant panel to which a composite fire-resistant material is adhered is erected against another fire-resistant panel, the position of the composite fire-resistant joint material may shift from its initial position, causing problems such as the composite fire-resistant joint material protruding from between the two fire-resistant panels, which reduces the fire resistance performance.

[0005] In view of the above circumstances, an object of the present disclosure is to provide a fire-resistant joint structure that can suppress misalignment of joint material and easily ensure fire resistance performance. [Means for solving the problem]

[0006] A fire-resistant 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 on its side facing the second panel to accommodate a portion of the vertical joint material. The second panel has a second recess on its side facing the first panel to accommodate another portion of the vertical joint material. The vertical joint material includes fire-resistant material accommodated in the first and second recesses and a retaining member that holds the fire-resistant material to the first panel. The first panel has a core material inside the first panel. The retaining member has an embedding portion that is embedded in the core material and a retaining portion that holds the fire-resistant material. [Effects of the Invention]

[0007] According to one aspect of the fire-resistant joint structure of the present disclosure, it is possible to suppress displacement of the joint material, making it easier to ensure fire resistance. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic cross-sectional plan view showing a fireproof joint structure of a first embodiment according to the present disclosure. [Figure 2] FIG. 2 is a perspective view showing a first panel included in the fire-resistant joint structure. [Figure 3] 3A is a cross-sectional view taken along line AA in FIG. 2, and FIG. 3B is a cross-sectional view taken along line BB in FIG. [Figure 4] Figure 4A is a perspective view showing a retaining member provided in the fireproof joint structure of the same, Figure 4B is a plan view showing the retaining member of the same, Figure 4C is a rear view showing the retaining member of the same, and Figure 4D is a front view showing the retaining member of the same. [Figure 5] 5A to 5C are schematic cross-sectional front views showing a process of attaching a vertical joint material to the first panel laid flat, and Fig. 5D is a schematic cross-sectional plan view showing the state in which the first panel is erected and the vertical joint material is sandwiched between the first panel and the second panel. [Figure 6]FIG. 6 is a schematic cross-sectional plan view showing a fireproof joint structure according to the second embodiment of the present disclosure. [Figure 7] Figure 7A is a perspective view showing a retaining member provided in the fireproof joint structure of the same, Figure 7B is a plan view showing the retaining member of the same, Figure 7C is a rear view showing the retaining member of the same, and Figure 7D is a front view showing the retaining member of the same. DETAILED DESCRIPTION OF THE INVENTION

[0009] (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 joint material 5 sandwiched between the first panel P1 and the second panel P2. The first panel P1 has a first recess 20 on its side facing the second panel P2 to accommodate a portion of the vertical joint material 5. The second panel P2 has a second recess 21 on its side facing the first panel P1 to accommodate another portion of the vertical joint material 5. The vertical joint material 5 has a fireproof material 6 accommodated in the first recess 20 and the second recess 21, and a retaining member 7 that holds the fireproof material 6 to the first panel P1. The first panel P1 has a core material 2 inside the first panel P1. The retaining member 7 has an embedding portion 70 embedded in the core material 2 and a retaining portion 71 that holds the fireproof material 6.

[0010] With the above configuration, in the fireresistant joint structure 1 of this embodiment, the fireresistant material 6 attached to the side surface of the first panel P1 can be accommodated in the first recess 20 on the side surface of the first panel P1 and then held by the retaining member 7. Here, in the fireresistant joint structure 1 of this embodiment, the embedded portion 70 of the retaining member 7 can be embedded in the core material 2 inside the first panel P1, making it easy to position the retaining member 7 and the fireresistant material 6 held by the retaining member 7. Therefore, in the fireresistant joint structure 1 of this embodiment, when the first panel P1 and the second panel P2 are fitted with the vertical joint material 5 (the fireresistant material 6 and the retaining member 7), the vertical joint material 5 can be easily inserted into the second recess 21 of the second panel P2, preventing the vertical joint material 5 from shifting due to contact with the second panel P2. As a result, in the fireresistant joint structure 1 of this embodiment, it is possible to prevent the vertical joint material 5 from shifting, making it easy to ensure fire resistance.

[0011] 2.Details Next, each component of the fireresistant joint structure 1 of this embodiment shown in Fig. 1 to Fig. 5 will be described in more detail. Below, with the fireresistant joint structure 1 shown in Fig. 1 as a reference, the direction in which the first panel P1 and the second panel P2 are arranged is defined as the left-right direction, the thickness direction of the first panel P1 and the second panel P2 is defined as the front-rear direction, and the direction perpendicular to the front-rear direction and the left-right direction is defined as the up-down direction.

[0012] 2-1. First Panel and Second Panel In the fireproof joint structure 1 of this embodiment, the first panel P1 and the second panel P2 are composed of sandwich panels of the same structure. Therefore, the first panel P1 will be described in detail below.

[0013] The first panel P1 shown in Figures 2 and 3 is a building panel and is used, for example, as an exterior wall material. The first panel P1 includes a core material 2, a metal skin 3 that covers the core material 2 from the front side, and a metal skin 4 that covers the core material 2 from the rear side. The first panel P1 has the core material 2 inside the first panel P1. When the first panel P1 is used as an exterior wall material, the metal skin 3 forms the exterior surface of the first panel P1, and the metal skin 4 forms the interior surface of the first panel P1.

[0014] The first panel P1 is a rectangular plate. The first panel P1 has a longitudinal direction parallel to the up-down 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 length in the up-down direction of 500 to 6000 mm, a length (width) in the left-right direction of 200 to 1500 mm, and a length (thickness) in the front-rear direction of 50 to 150 mm.

[0015] 2-1-1. Core material The core material 2 has an overall rectangular plate shape. The overall plate shape is not limited to a single plate, but also includes a plurality of members arranged to form a single plate.

[0016] The core 2 has a left side surface 202, a right side surface 203, a front surface 204, and a rear surface 205. The core 2 has a first recess 20 extending in the vertical direction on the right side surface 203, and a second recess 21 extending in the vertical direction on the left side surface 202. The recesses 20 and 21 are located approximately in the center of the left and right side surfaces 202 and 203 of the core 2 in the front-to-back direction, and are located over the entire length of the left and right side surfaces 202 and 203 of the core 2 in the vertical direction.

[0017] 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 made of a plurality of blocks arranged in the left-right direction. Each of the plurality of blocks is made by solidifying a fibrous inorganic material into a block shape with a binder or the like.

[0018] A first recess 20 is provided on the right side surface of the rightmost block among the plurality of block bodies, and a second recess 21 is provided on the left side surface of the leftmost block among the plurality of block bodies. In each of the plurality of block bodies, the longitudinal direction of the fibrous inorganic material is aligned along the front-to-rear direction. The length in the front-to-rear direction (i.e., width) 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-to-right direction (i.e., depth) of each of the first recess 20 and the second recess 21 is, for example, 10 to 20 mm.

[0019] 2-1-2. Metal shell Each of the metal skins 3 and 4 is obtained by forming a metal plate into a desired shape by rolling, pressing, etc. The metal plate has a thickness of, for example, 0.25 to 2.0 mm. The metal plate may be, but is not limited to, a painted steel plate, a zinc-plated steel plate, an aluminum-zinc alloy-plated steel plate, a Galvalume steel plate (registered trademark), an SGL (registered trademark) steel plate, etc.

[0020] The metal skin 3 has a rectangular box shape that opens toward the rear. The metal skin 3 has a rectangular plate-shaped main body 30 that covers the front surface 204 of the core material 2, an upper wall 31 that covers the top surface of the core material 2, a lower wall 32 that covers the bottom surface of the core material 2, a left wall 33 that covers a portion of the left side surface 202 of the core material 2 that is forward of the second recess 21, and a right wall 34 that covers a portion of the right side surface 203 of the core material 2 that is forward of the first recess 20.

[0021] The upper, lower, left, and right wall portions 31, 32, 33, and 34 are each perpendicular or approximately perpendicular to the main body portion 30. The left and right wall portions 33, 34 have rectangular flat plate portions 330, 340 and rectangular plate-like protrusion portions 331, 341 that protrude at approximately a right angle from the rear ends of the flat plate portions 330, 340 outward in the left-right direction. An opening 35 (see FIG. 2) is formed between two circumferentially adjacent wall portions of the wall portions 31, 32, 33, and 34.

[0022] The metal skin 4 has a rectangular plate-shaped main body 40 that covers the rear surface 205 of the core material 2, a left wall 41 that covers a portion of the left side surface 202 of the core material 2 that is rearward of the second recess 21, and a right wall 42 that covers a portion of the right side surface 203 of the core material 2 that is rearward of the first recess 20. The left wall 41 protrudes forward from the left edge of the main body 40, and the right wall 42 protrudes forward from the right edge of the main body 40.

[0023] The left and right wall portions 41, 42 each have a curved portion 410, 420 that is curved in a U-shape in plan view, and a rectangular flat portion 411, 421 that protrudes forward from the front end of the curved portion 410, 420.

[0024] The metal skins 3, 4 each have their main bodies 30, 40 bonded to the front and rear surfaces 204, 205 of the core material 2, respectively, to form a first panel P1 by being integrated with the core material 2. The opening 35 formed in the metal skin 3 is closed by a sealant and a receiving material for receiving the sealant, etc.

[0025] 2-1-3.Other The first panel P1 further includes waterproof gaskets 8 attached to the upper, lower, left, and right wall portions 31, 32, 33, and 34. The waterproof gaskets 8 include a plurality of linear gaskets 80 attached to the front-to-rear center of the upper surface of the upper wall portion 31, the front-to-rear center of the lower surface of the lower wall portion 32 (not shown), and the rear ends of the flat portions 330 and 340 of the left and right wall portions 33 and 34, respectively, and a plurality of L-shaped corner gaskets 81 attached to the corners of the upper, lower, left, and right wall portions 31, 32, 33, and 34. Each of the gaskets 80 has a hollow semicircular cross section perpendicular to the longitudinal direction. Each of the corner gaskets 81 is an L-shaped solid block. The gaskets 80 and the corner gaskets 81 are arranged in a rectangular frame shape in a front view so as to surround the entire periphery of the first panel P1. The gaskets 80 and the corner gaskets 81 are joined to each other with an adhesive or the like. Each of the plurality of packings 80 and the plurality of corner packings 81 is made of, for example, synthetic rubber. Each of the plurality of packings 80 and the plurality of corner packings 81 has an adhesive surface on the inner surface (the wall portions 31, 32, 33, 34 side) and can be attached to the upper, lower, left, and right wall portions 31, 32, 33, 34 without using adhesive.

[0026] 2-2.Vertical joint material In this embodiment, the vertical joint material 5 includes a fire-resistant material 6, a holding member 7, a fixing member 9, a second fire-resistant material 10, a fastener 11, and a cover material 12, as shown in FIG.

[0027] 2-2-1. Fireproof material The fire-resistant material 6 is housed 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 fire-resistant material 6 has a longitudinal direction parallel to the vertical direction.

[0028] The fire-resistant material 6 is accommodated in the front portion of the recess 20. The fire-resistant material 6 is a member that is harder and has higher fire resistance than the core material 2 of the first panel P1. In this embodiment, the fire-resistant material 6 is a reinforced gypsum board. Note that the fire-resistant material 6 is not limited to a reinforced gypsum board, and may be other fire-resistant members, such as a gypsum board or a calcium silicate board.

[0029] In this embodiment, the fire-resistant material 6 is composed of multiple members arranged abutting against each other in the vertical direction (the length direction of the first panel P1). The fire-resistant material 6 as a whole has the same vertical length as the core material 2. In this embodiment, each of the multiple members constituting the fire-resistant material 6 is in the shape of a square rod. Each of the multiple members constituting the fire-resistant material 6 has a constant cross-sectional shape along the longitudinal direction, and the cross-sectional shape is rectangular. In this embodiment, each of the multiple members constituting the fire-resistant material 6 is formed by overlapping two reinforced gypsum boards in the front-to-back direction. Note that the fire-resistant material 6 may be composed of a single member instead of multiple members.

[0030] The length of the fire-resistant material 6 in the left-right direction is slightly longer than the combined length of the first recess 20 of the first panel P1, the protruding portion 341 of the metal outer skin 3 of the first panel P1, the protruding portion 331 of the metal outer skin 3 of the second panel P2, and the second recess 21 of the second panel P2. The length of the fire-resistant 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 fire-resistant material 10 in the front-rear direction. The length of the fire-resistant material 6 in the left-right direction is, for example, 50 mm, and the length of the fire-resistant material 6 in the front-rear direction is, for example, 30 mm.

[0031] 2-2-2.Second refractory material The second fire-resistant material 10 is positioned alongside the fire-resistant material 6 in the thickness direction of the first panel P1. The second fire-resistant material 10 is positioned behind the fire-resistant material 6. In this embodiment, the second fire-resistant material 10 is a fire-resistant felt. The fire-resistant felt is made of biosoluble fibers. The fire-resistant felt is, for example, an alkali earth silicate (AES) blanket. Note that the second fire-resistant material 10 is not limited to a fire-resistant felt, and may be any other sheet-like member having fire resistance.

[0032] The second fire-resistant material 10 is formed by arranging a single sheet of fire-resistant felt folded so as to overlap in the front-to-rear direction (thickness direction of the first panel P1) in multiple rows in the vertical direction (length direction of the first panel P1). The multiple fire-resistant felts are arranged, for example, so that their vertical ends overlap in the front-to-rear direction. Note that the multiple fire-resistant felts may also be arranged butted together in the vertical direction. The second fire-resistant material 10 as a whole has the same vertical length as the core material 2. The left-to-right length of the second fire-resistant material 10 is the same as the left-to-right length of the fire-resistant material 6.

[0033] The butt joints between adjacent members of the multiple members that make up the fire-resistant material 6 can be covered with the second fire-resistant material 10, thereby preventing a decrease in fire resistance at the butt joints. The length of the second fire-resistant material 10 in the left-right direction is, for example, 50 mm, and the length of the second fire-resistant material 10 in the front-to-rear direction is, for example, 13 mm. The second fire-resistant material 10 may be made of a single piece of fire-resistant felt.

[0034] 2-2-3. Holding member The retaining member 7 shown in Fig. 1 and Figs. 4A to 4D has an embedding portion 70 that is embedded in the core material 2 of the first panel P1, a retaining portion 71 that holds the fire-resistant material 6, and a movement restricting portion 72 that restricts movement of the retaining portion 71. The retaining member 7 is a member that is shorter in the vertical direction than the fire-resistant material 6. The fire-resistant material 6 is held at multiple portions in the longitudinal direction by the multiple retaining members 7. The multiple retaining members 7 have the same structure.

[0035] In this embodiment, the holding member 7 is formed of a metal plate. The thickness of the metal plate is such that the embedding portion 70 can be easily embedded in the core material 2 of the first panel P1 and the fastener 11 can easily penetrate through it, for example, 0.5 to 1.2 mm.

[0036] The retaining member 7 has, as retaining portions 71, a first retaining portion 710 that retains a first surface (specifically, the front surface) of the fire-resistant material 6, a second retaining portion 711 that is continuous with the first retaining portion 710 and that retains a second surface (specifically, the right surface) of the fire-resistant material 6, and a third retaining portion 712 that is continuous with the second retaining portion 711 and that retains a third surface (specifically, the rear surface) of the fire-resistant material 6. The retaining portion 71 is substantially U-shaped.

[0037] In this embodiment, the first holding portion 710, the second holding portion 711, and the third holding portion 712 are each rectangular plate-shaped. The first holding portion 710, the second holding portion 711, and the third holding portion 712 have the same length in the up-down direction. The second holding portion 711 is parallel to the front-to-rear direction, and the first holding portion 710 and the third holding portion 712 are parallel to the left-to-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.

[0038] The third holding portion 712 is provided with an insertion portion 73 through which the fixing device 9 is passed. In this embodiment, the insertion portion 73 is a hole that penetrates the third holding portion 712 in the thickness direction (front-rear direction). The insertion portion 73 is provided in the center of the third holding portion 712 in the up-down direction.

[0039] The first holding portion 710 is provided with a second insertion portion 74 through which the fixing device 9 is passed. In this embodiment, the second insertion portion 74 is a rectangular cutout hole cut out from one end (left end) of the first holding portion 710. The second insertion portion 74 is located in the center of the first holding portion 710 in the up-down direction and on the left side (toward the embedded portion 70) of the insertion portion 73. Therefore, the fixing device 9 is inserted into the insertion portion 73 and the second insertion portion 74 in a direction intersecting the protruding direction of the embedded portion 70.

[0040] 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 (i.e., left side) the second holding portion 711. Each of the plurality of insertion pieces 700 has a pull-out prevention structure.

[0041] In this embodiment, the multiple insertion pieces 700 are composed of two insertion pieces 700 extending from the first holding portion 710 and two insertion pieces 700 extending from the third holding portion 712. 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 in the front-to-rear direction as the first holding portion 710. 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 in the front-to-rear direction as the third holding portion 712.

[0042] Each of the multiple insertion pieces 700 has a tapered distal end surface (left end surface) in the protruding direction. Each of the multiple insertion pieces 700 includes multiple protrusions 701 protruding in a direction intersecting the protruding direction of the insertion piece 700 (in this embodiment, a direction perpendicular to the protruding direction). In this embodiment, each of the multiple protrusions 701 is triangular. Each of the multiple insertion pieces 700 has two upper and lower protrusions 701 located at the distal end in the protruding direction and two upper and lower protrusions 701 located at the proximal end in the protruding direction. The four protrusions 701 form a retaining structure for the insertion piece 700. As described above, the insertion piece 700 of this embodiment has a tapered distal end surface in the protruding direction and multiple protrusions 701, which makes it easy to insert and embed the insertion piece 700 into the core 2 of the first panel P1 and less likely to fall out of the core 2.

[0043] In this embodiment, the movement restricting portion 72 is configured by a protruding piece 720 that protrudes from the third holding portion 712 on 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 a portion of the tip of the third holding portion 712 between the two insertion pieces 700. In this embodiment, the protruding piece 720 is in the shape of a rectangular plate.

[0044] The protruding piece 720 comes into contact with the bottom surface of the first recess 20 when the embedding portion 70 of the holding member 7 is inserted and embedded in the core material 2 (see FIG. 1). This allows the movement restricting portion 72 to restrict the movement of the holding member 7 in the insertion direction.

[0045] 2-2-4. Fixtures 1, the fastener 9 fastens the holding portion 71 to the core material 2 of the first panel P1. The fastener 9 is a screw, a nail, or the like. The fastener 9 is made of, for example, metal.

[0046] The fastener 9 is driven into the retaining portion 71 so as to pass through the insertion portion 73 and the second insertion portion 74. Therefore, the fastener 9 penetrates the retaining portion 71 and the fire-resistant material 6 in a direction intersecting the protruding direction of the embedded portion 70 (in other words, the insertion direction), and fixes the retaining portion 71 and the fire-resistant material 6 to the core material 2. As a result, the fastener 9 also functions as a structure to prevent the retaining member 7 from coming off.

[0047] 2-2-5. Fasteners The fasteners 11 fix the second fire-resistant material 10 to the holding portion 71. The fasteners 11 are, for example, staples. Note that the fasteners 11 are not limited to staples. For example, the fasteners 11 may be nails, screws, or the like.

[0048] In this embodiment, the fastener 11 is driven into the second fire-resistant material 10 arranged so as to overlap the rear surface of the third retaining portion 712, thereby penetrating the second fire-resistant material 10 and the third retaining portion 712 and fixing the second fire-resistant material 10 to the retaining portion 71. The fastener 11 fixes the second fire-resistant material 10 to a portion of the third retaining portion 712 that is offset from the insertion portion 73 (for example, a portion between the insertion portion 73 and the second retaining portion 711).

[0049] 2-2-6.Cover material The cover material 12 is arranged with respect to the second fire-resistant material 10 in the thickness direction of the first panel P1 on the opposite side to the fire-resistant material 6. The cover material 12 covers the second fire-resistant material 10 to prevent the second fire-resistant material 10 from being exposed.

[0050] The cover material 12 has the same vertical length as the fire-resistant material 6. The cover material 12 has a longitudinal direction parallel to the vertical direction. The cross-sectional shape of the cover material 12 is constant along the longitudinal direction. The cover material 12 may be composed of multiple members that are shorter than the fire-resistant material 6. In this case, the multiple members are arranged so that their longitudinal end faces abut against each other, or so that their longitudinal end portions overlap each other.

[0051] In this embodiment, the cover material 12 is formed by bending a single metal plate. The thickness of the metal plate is, for example, 0.5 mm. The metal plate may be, for example, a coated steel plate. The cover material 12 is fire-resistant. In this embodiment, the cross section of the cover material 12 perpendicular to the longitudinal direction is hat-shaped.

[0052] The cover material 12 has a pair of left and right contact portions 120, 121 that contact the second fire-resistant material 10, and a protruding portion 122 that is interposed between the pair of left and right contact portions 120, 121 and protrudes in a direction away from the second fire-resistant material 10 (i.e., rearward).

[0053] The cover material 12 is held by the panels P1 and P2 by the pair of left and right abutment portions 120 and 121 being housed in the first recess 20 and the second recess 21, respectively. The left and right side walls of the protrusion 122 are positioned parallel to the flat plate portions 421 and 411, respectively.

[0054] 2-3.Fire-resistant joint construction method Next, an example of a construction method for the fire-resistant joint structure 1 of this embodiment shown in Figures 5A to 5D will be described. This construction method includes a joint material fitting step and a panel installation step.

[0055] The joint material application process is performed with the first panel P1 laid flat so that the metal skin 3 forms the underside of the first panel P1. Below, the joint material application process will be explained by setting the up-down direction and the left-right direction based on the state in which the first panel P1 is laid flat. The joint material application process is performed in a factory or on-site.

[0056] In the joint material installation process, 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 retaining member 7 is inserted into the first recess 20. At this time, the retaining member 7 is inserted into the first recess 20 so that the fireproof material 6 is inserted inside the retaining portion 71 of the retaining member 7 and the embedding portion 70 of the retaining member 7 is embedded in the core material 2 of the first panel P1. The movement restricting portion 72 of the retaining member 7 abuts against the bottom surface of the first recess 20, thereby restricting movement of the retaining member 7 in the insertion direction. Note that the retaining member 7 may be inserted into the first recess 20 of the core material 2 after the fireproof material 6 is attached to the retaining member 7.

[0057] 5B, the fastener 9 is driven obliquely from above into the insertion portion 73 of the retaining portion 71. The fastener 9 is driven into the retaining portion 71 so as to pass through the insertion portion 73 and the second insertion portion 74 of the retaining portion 71. As a result, the retaining portion 71 and the fire-resistant material 6 held by the retaining portion 71 are fixed to the core material 2 of the first panel P1 by the fastener 9.

[0058] A plurality of holding members 7 are attached to the first panel P1 using the method described above. The plurality of holding members 7 are arranged at intervals in the longitudinal direction of the first panel P1. As a result, a plurality of longitudinal portions of the fireproof material 6 are held by the plurality of holding members 7. Note that the fixing of the holding portions 71 by the fasteners 9 may be performed on only some of the plurality of holding members 7.

[0059] 5C , the second refractory material 10 is placed on the upper surfaces of the refractory material 6 and the third retaining portion 712, and a part (left end) of the second refractory material 10 is accommodated in the first recess 20. Next, a fastener 11 is driven into the second refractory material 10 from above, and the second refractory material 10 is fixed to the retaining member 7. As a result, the second refractory material 10 is retained by the retaining member 7.

[0060] In this embodiment, the steps shown in FIGS. 5A and 5B in the joint material fitting process are performed in a factory, and the step shown in FIG. 5C is performed at a construction site.

[0061] 5C, after the fire-resistant material 6, the holding member 7, and the second fire-resistant material 10 are attached to the first recess 20 of the first panel P1, the first panel P1 is erected from a flat position to an upright position, and the panel installation process is carried out at the construction site.

[0062] In the panel installation step, the first panel P1 in an upright position is placed to the side (left) of the second panel P2 in an upright position, as shown in Fig. 5D. At this time, the cover material 12 is placed behind the second fire-resistant material 10, and the second panel P2 is installed so that the vertical joint material 5 (fire-resistant material 6, retaining member 7, second fire-resistant material 10, and cover material 12) fits into the second recess 21 on the side surface of the second panel P2.

[0063] By installing the two panels P1, P2 in the above-described manner, the vertical joint material 5 (fireproof material 6, retaining member 7, second fireproof material 10, and cover material 12) is sandwiched between the two panels P1, P2, forming a fireproof joint structure 1. In the fireproof joint structure 1, the waterproof gaskets 8 of the two panels P1, P2 butt against each other.

[0064] 2-4.Effects In the fireresistant joint structure 1 of the present embodiment described above, the fireresistant material 6 attached to the side surface of the first panel P1 can be accommodated in the first recess 20 on the side surface of the first panel P1 and then held by the retaining member 7. Here, in the fireresistant joint structure 1 of the present embodiment, the embedded portion 70 of the retaining member 7 can be embedded in the core material 2 inside the first panel P1, making it easy to position the retaining member 7 and the fireresistant material 6 held by the retaining member 7. Therefore, in the fireresistant joint structure 1 of the present embodiment, when the first panel P1 and the second panel P2, to which the vertical joint material 5 (the fireresistant material 6 and the retaining member 7) are attached, are erected, the vertical joint material 5 can be easily inserted into the second recess 21 of the second panel P2, making it possible to prevent the vertical joint material 5 from becoming misaligned due to contact with the second panel P2, and making it easy to ensure fire resistance.

[0065] Furthermore, in the fire-resistant joint structure 1 of this embodiment, the embedded portion 70 has a retaining structure (plurality of protrusions 701), so the embedded portion 70 is less likely to come off the core material 2, making it easier to prevent the retaining member 7 from rattling.

[0066] Furthermore, in the fireproof joint structure 1 of this embodiment, the retaining portion 71 of the retaining member 7 is fixed to the core material 2 by the fastener 9, which makes it easier to further suppress rattling of the retaining member 7.

[0067] Furthermore, the fire-resistant joint structure 1 of this embodiment has a second fire-resistant material 10 positioned alongside the fire-resistant material 6 in the thickness direction of the first panel P1. Therefore, when the fire-resistant material 6 is made up of multiple components and a butt joint is created where the components butt against each other, this butt joint can be covered with the second fire-resistant material 10, making it easy to prevent a decrease in fire resistance at the butt joint.

[0068] Furthermore, in the fireproof joint structure 1 of this embodiment, since the fastener 11 that fixes the second fireproof material 10 to the holding portion 71 is provided, both the fireproof material 6 and the second fireproof material 10 can be held by the holding member 7.

[0069] Furthermore, in the fireresistant joint structure 1 of this embodiment, the retaining member 7 has the movement restricting portion 72, so when the embedding portion 70 of the retaining member 7 is embedded in the core material 2, the movement restricting portion 72 comes into contact with the core material 2, preventing the retaining member 7 from being embedded more than a predetermined depth into the core material 2. Therefore, in the fireresistant joint structure 1 of this embodiment, the positions of the retaining member 7 and the fireresistant material 6 on the side surface of the first panel P1 tend to be stable.

[0070] Furthermore, in the fire-resistant joint structure 1 of this embodiment, the fixing device 9 extends in a direction intersecting the protruding direction (in other words, the insertion direction) of the embedded portion 70 of the retaining member 7, and fixes the retaining portion 71 to the core material 2, so that the fixing device 9 can also prevent the retaining member 7 from coming loose.

[0071] Furthermore, in the fire-resistant joint structure 1 of this embodiment, the retaining member 7 is formed from a metal plate, so that the retaining member 7 is less likely to burn, deform, or break in the event of a fire, making it easier to maintain the retention of the fire-resistant material 6 by the retaining member 7.

[0072] Furthermore, in the fireresistant joint structure 1 of this embodiment, the vertical joint material 5 includes a fireresistant material 6 and a second fireresistant material 10, and the fireresistant material 6 and the second fireresistant material 10 have higher fire resistance than the core material 2 of the first panel P1. Therefore, in the fireresistant joint structure 1 of this embodiment, the fireresistant material 6 and the second fireresistant material 10 easily ensure fire resistance in the joint between the panels P1 and P2.

[0073] Furthermore, in the fireproof joint structure 1 of this embodiment, the holding portion 71 of the holding member 7 holds the fireproof material 6 so as to cover it from three sides, so that the holding member 7 tends to hold the fireproof material 6 stably.

[0074] Furthermore, in the fire-resistant joint structure 1 of this embodiment, the second fire-resistant material 10 can be covered by the cover material 12, thereby preventing the second fire-resistant material 10 from being exposed between the two panels P1 and P2.

[0075] In addition, in the fire-resistant joint structure 1 of this embodiment, the pair of left and right contact portions 120, 121 of the cover material 12 can be stored in the first recess 20 and the second recess 21, and the cover material 12 can be held by the panels P1, P2, making it easy to prevent the cover material 12 from shifting out of position.

[0076] Furthermore, in the fire-resistant joint structure 1 of this embodiment, the vertical joint material 5 includes the metal cover material 12, which makes it easier to improve the fire resistance of the vertical joint material 5 itself.

[0077] Furthermore, in the fireproof joint structure 1 of this embodiment, the cover material 12 is hat-shaped, which makes it easy to carry the cover material 12 and facilitates the construction of overlaying the cover material 12 on the second fireproof material 10.

[0078] 3. Variations Next, a description will be given of modified examples of the above-described fireproof joint structure 1. The following modified examples can be combined as appropriate.

[0079] The retaining member 7 is not limited to the structure shown in FIG. 4A, as long as it has an embedded portion 70 that is embedded in the core material 2 of the first panel P1 and a retaining portion 71 that retains the fire-resistant material 6.

[0080] The embedded portion 70 does not necessarily have to have a retaining structure.

[0081] The vertical 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 necessary.

[0082] In addition, the vertical joint material 5 does not need to have a fastener 11, and the second fire-resistant material 10 may be fixed to the fire-resistant material 6 by adhesive or the like, or the second fire-resistant material 10 may be fixed to the fire-resistant material 6 by being sandwiched between the first panel P1 and the second panel P2.

[0083] Furthermore, the vertical joint material 5 may not have the fastener 9, and the retaining member 7 may be fixed to the core material 2 simply by embedding the embedding portion 70 in the core material 2. In this case, the retaining member 7 may not have the insertion portions 73, 74.

[0084] Furthermore, the holding member 7 is not limited to being one that surrounds and holds only the fire-resistant material 6, but may be configured to surround and hold both the fire-resistant material 6 and the second fire-resistant material 10. Furthermore, the holding member 7 is not limited to being made of metal, but may also be a resin molded product.

[0085] Furthermore, the cover material 12 may be any material capable of covering the fire-resistant material 6, and is not limited to the above-mentioned materials and shapes. For example, the cover material 12 is not limited to having a hat-shaped cross section, but may also have a flat plate shape. Furthermore, the cover material 12 is not limited to being made of metal, and may be made of other fire-resistant materials or non-fire-resistant materials.

[0086] Furthermore, the vertical joint material 5 does not necessarily have to have the cover material 12 .

[0087] Furthermore, the joint material application steps shown in FIGS. 5A to 5C may all be performed in a factory, or only the panel installation step shown in FIG. 5D may be performed at the construction site.

[0088] Second Embodiment 1.Details Next, a fireproof joint structure 1 of a second embodiment will be described with reference to Fig. 6 and Figs. 7A to 7D. The basic configuration and construction method of the fireproof joint structure 1 of this embodiment are the same as those of the first embodiment, and therefore, the same components as those of the first embodiment will be denoted by the same reference numerals in the drawings and will not be described.

[0089] 1-1. Holding member The holding member 7 has an embedded portion 70 and a holding portion 71, but does not have a movement restricting portion 72 (see FIG. 4A).

[0090] The holding member 7 has a holding portion 71 that includes a first holding portion 710, a second holding portion 711, and a third holding portion 712. In this embodiment, the second insertion portion 74 is located at one end (left end) of the first holding portion 710, between the two insertion pieces 700, over the entire length in the vertical direction. 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 the surface of the first holding portion 710 that faces the lower side of the second insertion portion 74 is flush with the upper surface of the lower insertion piece 700.

[0091] 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 .

[0092] Each of the upper insertion pieces 700 has a sharp tip that is inclined such that the tip surface (left end surface) in the protruding direction is positioned on the opposite side (right side) of the protruding direction as it approaches the lower portion. Each of the lower insertion pieces 700 has a sharp tip that is inclined such that the tip surface (left end surface) in the protruding direction is positioned on the opposite side (right side) of the protruding direction as it approaches the upper portion. Each of the two upper and lower insertion pieces 700 includes a protruding portion 701 that protrudes toward each other. In this embodiment, each protruding portion 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 protruding portion 701 forms a structure to prevent the insertion piece 700 from slipping out.

[0093] The upper insertion piece 700 protrudes from the upper end of the holding portions 710, 712, and the lower insertion piece 700 protrudes from the lower end of the holding portions 710, 712. The upper surface of the first holding portion 710 and the upper surface of the upper insertion piece 700 protruding from the first holding portion 710 are formed flush with each other. Furthermore, the lower surface of the first holding portion 710 and the lower surface of the lower insertion piece 700 protruding from the first holding portion 710 are formed flush with each other. The third holding portion 712 and the two upper and lower insertion pieces 700 protruding from the third holding portion 712 are also arranged in a similar relationship.

[0094] 1-2.Effects In the fireproof joint structure 1 of this embodiment described above, the two upper and lower insertion pieces 700 of the retaining member 7 have protruding portions 701 that protrude toward each other, so that when grasping and installing the retaining member 7, the hands are less likely to come into contact with the protruding portions 701, improving safety. Furthermore, the retaining member 7 of the fireproof joint structure 1 of this embodiment has simpler shapes for each part than the retaining member 7 of the first embodiment, making it easier to manufacture.

[0095] 2. Variations The fireproof joint structure 1 of the second embodiment described above can also be appropriately combined with the modified example of the fireproof joint structure 1 of the first embodiment described above.

[0096] Furthermore, the holding member 7 may have a movement restricting portion 72. In this case, the movement restricting portion 72 may be provided in the same position as the movement restricting portion 72 in the first embodiment, for example.

[0097] 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.

[0098] (summary) Like the fireproof joint structures (1) of the first and second embodiments and their modifications described above, the fireproof joint structure (1) of the first aspect has the following configuration.

[0099] That is, the fireproof joint structure (1) of the first embodiment includes a first panel (P1), a second panel (P2) adjacent to the first panel (P1), and a vertical joint filler (5) sandwiched between the first panel (P1) and the second panel (P2). The first panel (P1) has a first recess (20) on its side facing the second panel (P2) to accommodate a portion of the vertical joint filler (5). The second panel (P2) has a second recess (21) on its side facing the first panel (P1) to accommodate another portion of the vertical joint filler (5). The vertical joint filler (5) has a fireproof material (6) accommodated in the first recess (20) and the second recess (21), and a retaining member (7) that holds the fireproof 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) that is embedded in the core material (2) and a holding portion (71) that holds the fire-resistant material (6).

[0100] In the first embodiment of the fireproof joint structure (1) having the above-described configuration, the fireproof material (6) attached to the side surface of the first panel (P1) can be accommodated in the first recess (20) on the side surface of the first panel (P1) and then held by the retaining member (7). Here, in the fireproof joint structure (1) of the first embodiment, the embedded portion (70) of the retaining member (7) can be embedded in the core material (2) inside the first panel (P1), making it easy to position the retaining member (7) and the fireproof material (6) held by the retaining member (7). Therefore, in the fireproof joint structure (1) of the first embodiment, when the first panel (P1) to which the vertical joint material (5) (the fireproof material (6) and the retaining member (7)) is attached is erected and the second panel (P2) is assembled, the vertical joint material (5) can be easily inserted into the second recess (21) of the second panel (P2), 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 first aspect, it is possible to suppress displacement of the vertical joint material (5) during construction.

[0101] Furthermore, 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 second aspect additionally has the following configuration in addition to the configuration of the first aspect.

[0102] That is, in the fireproof joint structure (1) of the second embodiment, the embedded portion (70) has a retaining structure that prevents the embedded portion (70) from coming out of the core material (2).

[0103] In the fireproof joint structure (1) of the second aspect having the above configuration, the embedded portion (70) is unlikely to come off the core material (2), and the holding member (7) can easily stably hold the fireproof material (6).

[0104] Furthermore, like the fireproof joint structure (1) of the second embodiment and its modified example described above, the fireproof joint structure (1) of the third aspect additionally has the following configuration in addition to the configuration of the second aspect.

[0105] That is, in the fireproof joint structure (1) of the third embodiment, the embedded portion (70) has a pair of insert pieces (700) protruding from the retaining portion (71). The pair of insert pieces (700) include protruding portions (701) protruding in directions toward each other. The protruding portions (701) constitute the aforementioned slip-out prevention structure.

[0106] In the third embodiment of the fire-resistant joint structure (1) having the above-mentioned configuration, the protruding portions (701) protrude in directions approaching each other, thereby preventing the embedded portion (70) from coming out of the core material (2). In addition, the user is less likely to come into contact with the protruding portions (701) when grasping the retaining member (7) for installation, thereby improving safety.

[0107] Furthermore, like the fire-resistant joint structures (1) of the first and second embodiments and their modified examples described above, the fire-resistant joint structure (1) of the fourth aspect additionally has the following configuration in addition to the configuration of any one of the first to third aspects.

[0108] That is, in the fireproof joint structure (1) of the fourth embodiment, the vertical joint material (5) further has a fixing device (9) that fixes the holding portion (71) to the core material (2).

[0109] In the fireproof joint structure (1) of the fourth aspect having the above configuration, the retaining portion (71) can be fixed to the core material (2) by the fixing device (9), which makes it even easier to prevent the fireproof material (6) from shifting in position.

[0110] Furthermore, like the fire-resistant joint structures (1) of the first and second embodiments and their modified examples described above, the fire-resistant joint structure (1) of the fifth aspect additionally has the following configuration in addition to the configuration of any one of the first to fourth aspects.

[0111] That is, in the fifth embodiment of the fire-resistant joint structure (1), the vertical joint material (5) further has a second fire-resistant material (10) positioned alongside the fire-resistant material (6) in the thickness direction of the first panel (P1), and a fastener (11) that fixes the second fire-resistant material (10) to the retaining portion (71).

[0112] In the fifth aspect of the fire-resistant joint structure (1) having the above-mentioned configuration, the second fire-resistant material (10) can be fixed to the retaining portion (71) by the fastener (11), so that the second fire-resistant material (10) can also be held by the retaining member (7), and it is easy to prevent the second fire-resistant material (10) from shifting out of position.

[0113] The present disclosure has been described above based on the embodiments shown in the accompanying drawings, but the present disclosure is merely an example of the above embodiments, and appropriate design modifications are possible within the intended scope of the present disclosure. [Explanation of symbols]

[0114] 1 Fireproof joint structure 2 Core material 20 First recess 21 Second recess 5 Vertical joint material 6 Fireproof material 7 Retaining member 70 Embedded part 700 inserts 701 Protrusion 71 Holding part 9 Fixtures 10 Second refractory material 11 Fasteners P1 First Panel P2 Second Panel

Claims

1. The first panel and 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 a side surface facing the second panel, the first recess receiving a portion of the vertical joint material, The second panel has a second recess in a side surface facing the first panel, in which another portion of the vertical joint material is accommodated, The vertical joint filling material is a fireproof material accommodated across the first recess and the second recess; a retaining member that retains the fire-resistant material to the first panel, The first panel has a core material on the inside of the first panel, The holding member is an embedded portion embedded in the core material; A holding portion that holds the refractory material, A fire-resistant joint structure characterized by:

2. The embedded portion is The embedded portion has a retaining structure that prevents the embedded portion from coming out of the core material.

2. The fire-resistant joint structure according to claim 1.

3. 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 a side surface facing the second panel, the first recess receiving a portion of the vertical joint material, The second panel has a second recess in a side surface facing the first panel, in which another portion of the vertical joint material is accommodated, The vertical joint filling material is a fireproof material accommodated in the first recess and the second recess; a retaining member that retains the fire-resistant material to the first panel, The first panel has a core material on the inside of the first panel, The holding member is an embedded portion embedded in the core material; a holding portion that holds the refractory material, The embedded portion is a retaining structure that prevents the embedded portion from coming out of the core material; The embedded portion is a pair of insertion pieces protruding from the holding portion; The pair of insertion pieces include protrusions that protrude in directions toward each other, The protrusion constitutes the retaining structure. A fire-resistant joint structure characterized by:

4. 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 a side surface facing the second panel, the first recess receiving a portion of the vertical joint material, The second panel has a second recess in a side surface facing the first panel, in which another portion of the vertical joint material is accommodated, The vertical joint filling material is a fireproof material accommodated in the first recess and the second recess; a retaining member that retains the fire-resistant material to the first panel, The first panel has a core material on the inside of the first panel, The holding member is an embedded portion embedded in the core material; a holding portion that holds the refractory material, The vertical joint filling material is The holding portion may further include a fixing device that fixes the holding portion to the core material. A fire-resistant joint structure characterized by:

5. 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 a side surface facing the second panel, the first recess receiving a portion of the vertical joint material, The second panel has a second recess in a side surface facing the first panel, in which another portion of the vertical joint material is accommodated, The vertical joint filling material is a fireproof material accommodated in the first recess and the second recess; a retaining member that retains the fire-resistant material to the first panel, The first panel has a core material on the inside of the first panel, The holding member is an embedded portion embedded in the core material; a holding portion that holds the refractory material, The vertical joint filling material is A second fire-resistant material positioned alongside the fire-resistant material in the thickness direction of the first panel; and a fastener for fixing the second refractory material to the retaining portion. A fire-resistant joint structure characterized by:

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