JP2021130963A - Joint structure and partition wall - Google Patents

Abstract

To provide a joint structure in a partition wall capable of being easily constructed while enhancing the fire resistance of the partition wall.SOLUTION: A front surface member 11 and a rear surface member 12 have first bent parts 11a, 12a directed toward the inside of a partition panel 1 at the end part in the width direction of the partition panel 1, and second bent parts 11bi, 11bo, 12bi, 12bo directed toward the direction of the adjacent partition panel at the tips of the first bent parts 11a, 12a; in at least one of the adjacent partition panels, a core member is provided with a first recess part for accommodating the first bent parts 11a, 12a and the second bent parts 11bi, 11bo, 12bi, 12bo of the front surface member 11 and the rear surface member 12; the second bent parts 11b of the front surface members 11 of the adjacent partition panels 1a and 1b and the second bent parts 12b of the rear surface members 12 are joined to each other using a fixing member V.SELECTED DRAWING: Figure 3

Description

The present invention relates to joint structures and partition walls.

Conventionally, in a building, a fire prevention section is provided for each predetermined area (area section) or at the boundary of rooms for different purposes (different purpose section) such as the boundary between a warehouse and a cargo handling room, and an internal fire spreads in the event of a fire. Is being prevented. Of the walls that make up a building, the partition walls that make up the fire protection compartment wall are required to have a fire resistance of one hour according to the Building Standards Act.

By the way, due to the recent expansion of distribution demand, freezing and refrigerating warehouses are becoming larger, but since these buildings are also subject to fire protection, it is necessary to partition them by partition walls. However, in addition to having both fire resistance and heat insulation, the partition wall needs to be long in order to continue from the fire resistant floor to the fire resistant roof, which also increases the selection of materials. It was difficult. Therefore, conventionally, a room to be a freezing and refrigerating warehouse has been constructed by once partitioning with a partition wall such as lightweight cellular concrete having fire resistance and then using heat insulating panels such as metal sandwich panels on both sides of the wall.

However, in this case, since the air conditioning temperature is different between the heat insulating panel and the partition wall serving as the fireproof compartment, dew condensation is likely to occur on the surface of the heat insulating panel, and these spaces are narrow and difficult to clean. There is a problem that mold and insects are likely to cause harm. Therefore, in order to suppress such harm, there has been a demand for a partition wall that has both fire resistance and high heat insulation and can be used for a long time.

Conventionally, as a building panel, a core material made of rock wool is sandwiched between metal plates and bonded (see, for example, Patent Document 1). However, although building panels made of rock wool as a core material have high fire resistance, their heat insulating performance is insufficient as a partition wall of a freezing and refrigerating warehouse.

In order to use a partition wall made of rock wool as a core material as a freezing and refrigerating warehouse, not only is the wall thickness extremely thick due to the heat insulating properties of rock wool, but also rock wool has high water vapor and gas permeability. It has even greater hygroscopicity and water absorption. Therefore, internal dew condensation is likely to occur, and water vapor and water once entered inside the wall move freely inside the wall, causing great damage and making repair difficult.

Further, Patent Document 2 proposes a refractory panel in which a core material made of a phenol resin foam to which an inorganic material is added is sandwiched between a front surface material and a back surface material made of a metal material. However, the fireproof panel needs to be fastened to a base such as a lightweight steel frame arranged at a fine pitch, and it is difficult to use it as a long partition wall in terms of structure and fire resistance.

Therefore, Patent Document 3 proposes a heat-insulating fire-resistant sandwich panel in which an organic heat-insulating board layer and an inorganic board layer are laminated and bonded between a front surface material and a back surface material made of a metal material. I had a similar problem.

Japanese Patent No. 3657692 Japanese Patent No. 3306439 JP-A-2007-132102

In order to enhance the fire resistance of the partition wall, it is of course necessary to enhance the fire resistance of the panels themselves constituting the partition wall, and it is also important to enhance the fire resistance of the joint structure between the panels. That is, in general, a partition wall is configured by arranging a plurality of long partition panels adjacent to each other in the short direction, but even if the panels themselves have high fire resistance, the joint structure between the panels is formed. If the fire resistance is low, the fire resistance as a partition wall will be low.

Therefore, an object of the present invention is to provide a joint structure in a partition wall that can be easily constructed while improving the fire resistance of the partition wall.

[1] A joint structure between partition panels in which a plurality of partition panels are arranged adjacent to each other.
Each of the plurality of partitioning panels has a front surface material and a back surface material made of a metal material, and a core material arranged between the front surface material and the back surface material.
The front surface material and the back surface material have a first bent portion facing the inside of the partition panel at an end portion in the width direction of the partition panel, and are adjacent to the tip of the first bent portion. Has a second bend towards the partition panel
In at least one of the adjacent partition panels, the core material arranged between the front surface material and the back surface material is the first of the front surface material and the back surface material at the joint portion of the adjacent partition panel. It is provided with a first recess for accommodating a bent portion and a second bent portion of the lumber.
A joint structure characterized in that the second bent portions of the front surface material of the adjacent partition panel and the second bent portions of the back surface material are joined by a fixture.

[2] The second bent portion of the surface material of the partition panel of one of the two adjacent partition panels is arranged on the surface side of the second bent portion of the surface material of the other partition panel. And
The joint portion according to the above [1], wherein the second bent portion of the back surface material of the other partition panel is arranged on the back surface side of the second bent portion of the back surface material of the one partition panel. structure.

[3] Of the second bent portions in which the surface materials of the two adjacent partition panels are laminated, the length in the direction in which the partition panels of the second bent portion on the back surface side are adjacent to each other is the length on the front surface side. The partition panel of the second bent portion is longer than the length in the adjacent direction, and the second bent portion on the front surface side of the second bent portion in which the back material of the two adjacent partition panels is laminated. The joint according to the above [1] or [2], wherein the length of the part in the direction in which the partition panel is adjacent is longer than the length in the direction in which the partition panel of the second bent portion on the back surface side is adjacent. Lumber structure.

[4] The fixture for joining the second bent portions of the surface materials of the two adjacent partition panels is the first bent portion of the surface material having the second bent portion arranged on the surface side. The fixture, which is arranged close to the side and joins the second bent portions of the back surface materials of the two adjacent partition panels, is a back surface material having a second bent portion arranged on the back surface side. The joint structure according to any one of [1] to [3], which is arranged closer to the first bent portion side of the above.

[5] The core material has an inorganic board layer and has an inorganic board layer.
The second recess is provided on the end surface of one inorganic board layer of the two adjacent partition panels, and the thermal expansion material is housed in the second recess. ] The joint structure according to any one of the items.

[6] A partition in which the upper and lower ends of a plurality of partition panels having the joint structure according to any one of the above [1] to [5] are bridged and fixed between the floors of a building. Wall.

According to the present invention, it is possible to realize a joint structure in a partition wall that can be easily constructed while improving the fire resistance of the partition wall.

It is an overall view of an example of a partition wall having a joint structure according to the present invention. It is a vertical sectional view of the joint portion of the partition wall shown in FIG. 1A. It is a cross-sectional view in the width direction of the partition wall shown in FIG. 1A. It is an overall view of an example of a partition panel. It is sectional drawing of the end part on the width direction side of an example of a partition panel 1. It is a figure which shows an example of the joint structure by this invention. It is a figure which shows a preferable example of the joint structure by this invention. It is a figure which shows the specifications of the front surface material and the back surface material which facilitates construction when building a partition panel continuously in a width direction. It is a figure which shows another preferable example of the joint structure by this invention. It is a figure which shows the organic insulation board layer composed of a plurality of boards. It is a figure explaining a preferable method of adhering adjacent organic insulation board layers. It is a figure which shows the inorganic board layer composed of a plurality of boards. It is a figure which shows the preferable arrangement relation of the horizontal joint of the organic heat insulating board layer, and the horizontal joint of the inorganic board layer. It is a figure explaining the method of mechanically fixing an organic heat insulating board layer and an inorganic board layer by using an anchor material when the organic heat insulating board layer has a two-layer structure. It is a figure explaining the method of mechanically fixing an organic heat insulating board layer and an inorganic board layer by using a screw when the organic heat insulating board layer has a two-layer structure. It is a figure explaining the method of mechanically fixing an organic heat insulating board layer and an inorganic board layer by using a screw when the organic heat insulating board layer has a one-layer structure.

Hereinafter, the joint structure according to the present invention will be described with reference to the drawings. The joint structure according to the present invention is a joint structure between two adjacent partition panels in a partition wall in which a plurality of partition panels are arranged adjacent to each other. Each of the plurality of partition panels has a front surface material and a back surface material made of a metal material, and a core material arranged between the front surface material and the back surface material.

The front surface material and the back surface material have a first bent portion facing the inside of the partition panel at an end portion in the width direction of the partition panel, and further adjacent to the tip of the first bent portion. The core material having a second bent portion facing the direction of the partition panel and arranged between the front surface material and the back surface material in at least one of the adjacent partition panels is an adjacent partition. The joint portion of the panel is provided with a first recess for accommodating the first bent portion and the second bent portion of the front surface material and the back surface material, and the second bent portion of the surface material of the adjacent partition panel. It is important that the second bent portions of the backing material and the backing members are joined to each other by a fixture.

FIG. 1A shows an overall view of an example of a partition wall having a joint structure according to the present invention. Further, FIG. 1B shows a vertical cross-sectional view of the joint portion of the partition wall shown in FIG. 1A, and FIG. 1C shows a cross-sectional view of the partition wall shown in FIG. 1A in the width direction (short direction). ..

The partition wall 2 shown in FIGS. 1A to 1C is a partition formed by arranging a plurality of long partition panels 1 adjacent to each other in a short direction (width direction, direction in which partition panels are arranged adjacent to each other). It is a wall, which is bridged between the floors of the building, that is, between the floor slabs 22 and 23, and is fixed at the upper and lower ends thereof. In addition to the floor slab, the partition wall 2 may be fixed to a ceiling or a fireproof coated steel beam arranged on the floor. Further, in the case of an application in which it is necessary to arrange a heat insulating material on the floor surface, after stacking the heat insulating material from the floor slab surface on both sides of the partition wall, concrete is poured on the heat insulating material to place the floor surface. Often finished as.

The lower portion of the partition wall 2 is fixed to the floor slab 23 by the lower fastening member 25a and the lower anchor member 25b via the lower mounting member 25c. Although not shown, the upper portion of the partition wall 2 is also similarly fixed to the floor slab 22 by the upper fastener member 24a and the upper anchor member 24b via the upper mounting member 24c. Further, the joint between the partition wall 2 and the floor slab 22 is filled with the upper joint material 26, and the joint between the partition wall 2 and the floor slab 23 is filled with the lower joint material 27. ..

The upper anchor material 24b and the lower anchor material 25b are selected to withstand the normal design load of the partition wall, which is an inertial force of about 1 G acting at the time of an earthquake, but generally, the diameter is about M8 to 10 and the embedding length is about M8 to 10. A required number of concrete anchor materials having a diameter of about 30 to 70 mm are arranged according to the load capacity that can be borne.

Further, the upper joint material 26 and the lower joint material 27 do not create a gap through which flame or heat penetrates when the wall material is displaced or rotated during a fire, and impairs the function of the wall material as a fire stop material. It is a material that does not cause chipping or dropping and further reduces thermal transmission in normal times. As the upper joint material 26 and the lower joint material 27, ceramic fibers, alkaline earth silicate blankets (biosoluble fibers) and the like can be used.

Each of the plurality of long partition panels 1 constituting the partition wall 2 has a front surface material and a back surface material made of a metal material, and a core material arranged between the front surface material and the back surface material. .. The core material can be constructed using, for example, an organic heat insulating board and an inorganic board.

FIG. 2A shows an overall view of an example of the partition panel 1, and FIG. 2B shows a cross-sectional view of an end portion of the partition panel 1 shown in FIG. 2A on the width direction side. The partition panel 1 shown in FIG. 2A includes a front surface material 11 and a back surface material 12 made of a metal material, and two organic heat insulating board layers 13 and 14 arranged between the front surface material 11 and the back surface material 12. It has an inorganic board layer 15 sandwiched between the two organic heat insulating board layers 13 and 14.

As shown in FIG. 2B, in the partition panel 1, recesses (first recesses) D1 partitioned by the side wall Ds and the bottom surface Db are formed at the corners of the organic heat insulating board layers 13 and 14 which are the core materials. It is provided. Then, the end portion on the width direction side of the front surface material 11 (back surface material 12) of the partition panel 1 is the first bent portion 11a (12a) facing the inside of the partition panel 1 in the first recess D1. And a second bent portion 11b (12b) extending from the end portion 11ae (12ae) of the first bent portion 11a (12a).

On the other hand, in the partition panel 1, the end portion on the long direction side attached to the floor slabs 22 and 23 has only the first bent portions 11a and 12a without having the second bent portions 11b and 12b. , The organic heat insulating board layers 13 and 14 are bent toward the side wall Ds side and are configured to engage with the first recess D1. An adhesive layer 16 (17) composed of an adhesive is formed between the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14), and the side wall Ds and the first side wall Ds are formed. A gap is provided on the inner surface (surface on the side wall Ds side) of the bent portion 11a (12a) so that the adhesive does not accumulate at the end when the adhesive is applied and then pressed, so that the front surface material 11 (back surface material 12) is not accumulated. ) And the organic heat insulating board layer 13 (14) so that the adhesive spreads evenly.

The partition panel 1 is not limited to that shown in FIGS. 2A and 2B, and includes a panel having a configuration in which a plurality of inorganic board layers are sandwiched between the front surface material 11 and the back surface material 12 and arranged. It is also possible to use a panel having a configuration in which an organic heat insulating board layer is sandwiched between a plurality of inorganic board layers and the plurality of inorganic board layers between the front surface material 11 and the back surface material 12. ..

Hereinafter, the joint structure according to the present invention will be described by taking the case where the partition panel 1 has the configurations shown in FIGS. 2A and 2B as an example, but the configuration of the partition panel 1 is not limited to this. The details of the front surface material 11, the back surface material 12, the organic heat insulating board layers 13 and 14, and the inorganic board layer 15 constituting the partition panel 1 will be described later.

FIG. 3 shows an example of the joint structure according to the present invention. In the joint portion 50 of the joint portion structure shown in FIG. 3, as shown in FIG. 2B, the core material adjacent to the front surface material 11 and the back surface material 12 of the adjacent partition panels 1a and 1b, that is, the organic material. First recesses D1 partitioned by the side wall Ds and the bottom surface Db are provided along the elongated direction at the corners of the heat insulating board layers 13 and 14 on the front surface material 11 side and the back surface material 12 side. Then, on the front surface side (back surface side) of the organic heat insulating board layer 13 (14) between the adjacent partition panels 1, recesses 13a and 14a composed of two adjacent first recesses D1 are formed.

Each of the end portion of the front surface material 11 and the end portion of the back surface material 12 of one of the partition panels 1a and 1b of the adjacent partition panels 1a and 1b (for example, 1a) is formed in the first recess D1 of the partition panel 1. A core at the first bent portion 11a (12a) extending inward and the other (for example, 1b) along the bottom surface Db from the end portion 11ae (12ae) of the first bent portion 11a (12a). It has a material, that is, a second bent portion 11b (12b) extending in the first recess D1 of the organic heat insulating board layers 13 and 14.

Similarly, each of the end portion of the front surface material 11 and the end portion of the back surface material 12 of the other partition panel (for example, 1b) extends toward the inside of the partition panel 1 in the first recess D1. A core material in the first bent portion 11a (12a) and one of the partition panels (for example, 1a) along the bottom surface Db from the end of the first bent portion 11a (12a), that is, organic heat insulating material. It has a second bent portion 11b (12b) extending in the first recess D1 of the board layers 13 and 14.

Here, the second bent portion 11b (12b) of one surface material 11 (back material 12) in the adjacent partition panels 1a and 1b is the other second bent portion 11b (12b) and a fixture (FIG. In the example, they are joined by screw V). As a result, the adjacent partition panels 1a and 1b can be integrated into a strong partition wall 2, and when a local load such as a load collapse or a fire is applied to a part of the partition wall 2. The resistance will be excellent. As shown in FIG. 3, the second bent portion 11b (12b) of one front surface material 11 (back surface material 12) in the adjacent partition panels 1a and 1b is combined with the other second bent portion 11b (12b). It is preferable that they are laminated and joined by a fixture.

The first bent portion 11a (12a) reinforces the front surface material 11 (back surface material 12) and prevents buckling from easily occurring in the long direction. If the front surface material 11 and the back surface material 12 are provided with the first bent portion 11a (12a), the surface material 11 and the back surface material 12 are reinforced in the elongated direction, but deformation such as bending in the width direction and buckling are likely to occur. The portions 11b (12b) are provided, and the second bent portions 11b (12b) of the adjacent partition panels 1a and 1b are joined to each other by a fixture to suppress buckling and deformation in the width direction.

The surface material 11 (the surface that becomes the heating side in the event of a fire) plays a role of reducing the amount of heat that enters the fire-resistant core material during heating due to a fire. In the present invention, since the adjacent surface materials 11 are joined to each other with a fixture, the amount of heat that penetrates from the seams of the surface materials 11 can be reduced. Further, after the heating is completed, as the temperature drops, each material constituting the panel 1 tends to shrink, so that a gap is likely to occur in the joint portion 50 of the panel 1, but in the present invention, the backing materials are fixed to each other with a fixture. Since they are joined, the joint portion 50 does not have a gap, and the heat transfer of the joint portion 50 can be prevented.

Further, a sealing material 28 is cast in the joint portion 50 between the panels 1. As a result, the adjacent partition panels 1a and 1b are more firmly integrated, so that a gap is less likely to occur in the joint portion 50. In addition, when an organic heat insulating material is used on the back surface side of the core material, it may ignite due to an increase in oxygen concentration even if the temperature decreases, and it is particularly necessary to prevent the inflow of oxygen from the back surface side. be. To deal with such a phenomenon, it is extremely useful to join the back surface members 12 of the adjacent partition panels 1a and 1b to each other and further cast the sealing material 28.

Further, since the surface material 11 expands greatly during heating, when a fragile inorganic material such as ALC or a caucal plate is used for the core material, the surface material 11 and the core material are peeled off at an early stage, and these materials are released. It is important to prevent damage following the deformation of the surface material 11. In the present invention, since the first recess D1 is provided on the surface material 11 side of the core material and the first bent portion 11a on the heating side and the core material are cut off, even the adhesion between the surface material 11 and the surface of the core material is peeled off. If this is done, the two can be separated, which is preferable. In particular, immediately after heating, the temperature of the flat portion of the surface material 11 rises sharply, but in the portion inside the panel 1 such as the first bent portion 11a, the temperature rises due to the influence of combustion of the sealing material 28 and the like. Is a little late.

Further, in the case of a commercial warehouse, the partition wall is required to have a bearing capacity against a load collapse load. Immediately after the load collapses, the load is not applied equally to all the wall parts. First, a large load may be applied to a part of the wall surface, and then the area to which the load is applied generally expands, especially long. In the case of partition walls, it is important to address this issue. In the joint structure according to the present invention, since the adjacent panels 1a and 1b are integrated, a large load applied locally can be distributed and applied to the adjacent panels 1a and 1b, which is preferable.

In FIG. 3, among the second bent portions 11b (12b) of the laminated front surface material 11 (back surface material 12), the front side (back surface side) is 11bo (12bo) and the back surface side (front surface side). ) Is shown by 11bi (12bi).

The second bent portion 11b (12b) does not have to be formed over the entire length of the panel 1, and is fixed to the first bent portion 11a (12a) by rivets at intervals of about 300 to 1500 mm, for example. It is also good. Then, the portions of the front surface material 11 (back surface material 12) that are laminated with each other are connected by screws V at intervals of about 300 to 1500 mm.

Further, as shown in FIG. 3, it is preferable that the edges of the plurality of long partition panels 1a and 1b constituting the partition wall 2 are filled with the thermal expansion material 21. It is most efficient to load the thermal expansion material 21 not to the entire thickness between the panels 1a and 1b, but to load only the remaining portion of the inorganic board layer 15 while having strength during and after heating. good. Further, the thermal expansion material 21 does not necessarily have to be loaded in the entire thickness of the inorganic board layer 15, and may be determined in consideration of the assumed gap between the inorganic board layers 15 and the expansion coefficient of the thermal expansion material 21. The width is preferably 1 to 3 mm and the width is preferably about 15 to 50 mm. Further, a sealing material 28 is cast in the joint portion 50 between the panels 1.

As the thermal expansion material 21, a sheet-shaped or string-shaped thermal expansion material, a refractory paint, or the like can be used. As a heat-expandable sheet material, expansion starts at about 150 to 200 ° C., expands about 5 to 15 times at 300 ° C., expands about 10 to 30 times at 600 ° C., and does not disappear even at a heating temperature of about 900 ° C. A sheet formed into a sheet containing about half or more of an inorganic material can be processed into a predetermined size and used. As for the composition, for example, expanded graphite which is an expansion material is added to an inorganic filler such as boric acid which forms an expansion layer, and an additive such as mineral oil and carbon black and a binder such as butyl rubber are added to form a sheet. Things can be used. When boric acid is used as the inorganic filler, aluminum oxide is added in a weight ratio of 0.45 or more and 1.5 or less with respect to boric acid, and the total content of the silicic acid compound, magnesium salt and calcium salt is adjusted. By setting the weight ratio to less than 10% with respect to boric acid, the shape-retaining ability of the heat-expandable sheet material after expansion can be enhanced, which is preferable.

By the above joining, the movement of the joint portion 50 is reduced, and the life of the sealing can be extended. Further, since the outermost part in the width direction is composed of the front surface material 11 or the back surface material 12 made of a metal material, damage to the edges of the organic heat insulating board layers 13 and 14 and the inorganic board layer 15 which are the core materials is prevented. can do. Further, when the partition wall 2 is built, the entrance and exit of the front surface material 11 and the back surface material 12 made of a metal material can be easily adjusted.

Further, a bond breaker 29 for preventing three-sided adhesion of the sealing material 28 is laid on the panel front surface side (back surface side) 11bo (12bo) of the second bent portion 11b (12b). It is also possible to use a backup material made of foamed resin instead of the bond breaker 29, but these materials have the property of shrinking near 180 + atmospheric temperature, which is the specified value of the back surface temperature in the fire resistance test. It is necessary to be careful because there is a possibility that the adhesion from the bottom surface side of the sealing on the opposite side of heating may be cut off and the fire resistance may be lowered.

FIG. 4 shows a preferred embodiment of the joint structure shown in FIG. In the joint portion 50 of the joint portion structure shown in FIG. 3, the second surface material 11 (back surface material 12) in one of the adjacent partition panels 1a and 1b (in FIG. 3, the partition panel 1a). Both of the bent portions 11bi (12bi) of the above are arranged on the back surface side (front surface side).

On the other hand, in the joint portion 60 of the joint portion structure shown in FIG. 4, one of the two adjacent partition panels 1a and 1b (partition panel 1b in FIG. 4) is used. The second bent portion 11bo of the surface material 11 is arranged on the surface side of the second bent portion 11bi of the surface material 11 of the other partition panel (partition panel 1a in FIG. 4). The second bent portion 12bo of the back surface material 12 of the other partition panel (partition panel 1a in FIG. 4) is arranged on the back surface side of the second bent portion 12bi of the back surface material 12 of one partition panel 1b. Has been done.

With this configuration, there is an error in the distance between the second bent portions 11bi and 12bo of one of the adjacent partition panels 1a and 1b and the distance between the second bent portions 11bo and 12bo of the other 1b. Even when the four second bent portions 11bi, 11bo, 12bi, and 12bo of the adjacent panels 1a and 1b are not parallel to each other, they can be easily built on site. Such consideration is especially important in the case of long partition panels 1a and 1b. That is, when the next partition panel 1b is constructed following the partition panel 1a previously constructed at a predetermined position, as shown in FIG. 5, the second bent portions of the respective partition panels 1a and 1b are bent. The second bent portions 11bi, 11bo (12bi, 12bi, by pulling 11bi and 11bo and 12bo and 12bi slightly in the thickness direction so that the width direction has a predetermined dimension, and then pushing them to a predetermined position in the thickness direction. 12bo) It can be easily constructed without colliding with each other.

Of the second bent portions 11bi and 11bo (12bi and 12bo) to be laminated, the length of the second bent portion 11bi (12bi) adjacent to the organic heat insulating board layers 13 and 14 in the width direction (short direction) is increased. Further, as shown in FIG. 4, it is preferable that the position of the fixture (screw V in FIG. 4) is closer to the first bent portion 11a (12a) side. As a result, the edge space of the fixture screwed into the second bent portions 11bo, 11bi, 12bo and 12bi of the fixture can be increased, and the connection strength between the adjacent partition panels 1a and 1b can be increased. ..

That is, when the width of the joint portion is wider than the design value at the construction site due to various factors, the edge space of the second bent portion 11bi is larger than the edge space of 11bo, so that the second bent portion has a margin. By constructing the fixture on the 11bo without changing the position where the fixture is struck, it is possible to secure an edge space for both the 11bi and the 11bo.

Further, the second bent portions 11bo, 11bi, 12bo, and 12bi are designed with a gap so as to absorb an error such as linearity between the two to be laminated, and the gap becomes small when they are joined by the fixture. Although it is a thing, it does not necessarily have to be in close contact.

The first bent portions 11a and 12a need to have a depth capable of accommodating the fixture while preventing buckling of the surface material 11 and the length direction, and the length of the first bent portions 11a and 12a is 5. ~ 20 mm is preferable, and 7 to 15 mm is more preferable. The second bent portions 11bo, 11bi, 12bo, and 12bi need to accommodate the fixture and secure an edge clearance for ensuring the joint strength of the fixture, and the second bent portions 11bo, 11bi, 12bo, and 12bi The length is preferably 7 to 20 mm, more preferably 8 to 15 mm.

Further, a second recess D2 is provided on the end surface 15b of the inorganic board layer 15 of one of the two adjacent partition panels 1a and 1b (in FIG. 4, the partition panel 1b), and the thermal expansion material 21 is provided. Is housed in the recess (second recess) D2 and is preferably arranged close to each other. As a result, when the thermal expansion material 21 is arranged between the partition panels 1a and 1b adjacent to each other, the thermal expansion material 21 may be filled in the provided second recess D2, which greatly improves workability. be able to. As shown in FIG. 4, there may be a gap (for example, about 1 mm in the width direction) between the inorganic board layer 15 and the thermal expansion material 21.

FIG. 6 shows another preferred embodiment of the joint structure shown in FIG. In the joint structure 70 shown in FIG. 6, among the organic heat insulating board layers 13 adjacent to the surface material 11, only the organic heat insulating board layer 13 of the partition panel 1a is provided with the first recess D1. The first recess D1 constitutes the recess 13a. Then, the positions of the joints between the inorganic board layers 15 and the positions of the joints between the organic heat insulating board layers 13 are arranged so as to be offset in the width direction of the partition panel 1, and a contradictory structure is formed. There is.

Further, among the organic heat insulating board layers 14 adjacent to the back surface material 12, the first recess D1 is provided only in the organic heat insulating board layer 14 of the partition panel 1b, and the first recess D1 constitutes the recess 14a. doing. The positions of the joints between the inorganic board layers 15 and the positions of the joints between the organic heat insulating board layers 14 are arranged at the same positions in the width direction of the partition panel 1. Similar to the joint structure 60 shown in FIG. 4, the thermal expansion material 21 is housed in a second recess provided in the end surface 15c of the inorganic board layer 15 of the partition panel 1a and arranged close to each other.

By adopting the joint structure shown in FIG. 6, even if there is some dimensional error of the material of each layer or construction error of the partition wall, a gap penetrating from the front surface material side to the back surface material side is unlikely to occur, so that in the event of a fire. In the joint portion 70, the heat flowing from the heated side to the non-heated side is reduced to improve the fire resistance, and at the same time, the heat insulating property, moisture permeation resistance, sound insulation and the like in normal times can be improved.

As described above, since the partition wall 2 is fixed to the skeleton at the upper and lower ends thereof, the front surface material 11 (back surface material 12) expands when the surface material 11 (back surface material 12) of the partition wall 2 is heated. Then, the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14) can be peeled off, and the board layers 13, 14 and 15 are not deformed and damaged, and the partition wall 2 has fire resistance. Can be retained. As described above, the joint structure according to the present invention makes it possible to realize the partition wall 2 having both high fire resistance and heat insulating properties.

In the joint structure shown in FIGS. 3 to 6, it is preferable to provide a gap between the first folded-back portion 11a and the side wall Ds. As a result, when the adhesive is applied to the surfaces of the organic heat insulating board layers 13 and 14, and the front surface material 11 and the back surface material 12 are arranged and pressed, the adhesive accumulates at the ends of the organic heat insulating board layers 13 and 14. It is possible to obtain a reliable adhesive effect over the entire surface by applying the coating evenly to the entire adhesive surface.

Further, the distance between the front surface of the back surface side (front surface side) of the second folded portion 11b (12b) of the front surface material 11 (back surface material 12) and the bottom surface Db is preferably 2 mm or more and 20 mm or less, and is preferably 3 mm. It is more preferably 5 mm or less. The larger the distance, the higher the work efficiency during construction, but the worse the fire resistance. When the distance is 2 mm or more and 20 mm or less, both workability and fire resistance can be achieved at the same time.

In FIGS. 3 to 6, the shape of the cross section of the first recess D1 in the panel thickness direction is rectangular, but the shape is not limited to this, and a shape composed of a curved surface for convenience of processing, for example, a circular shape or the like. It can also be oval.

Next, the configurations of the front surface material 11, the back surface material 12, the organic heat insulating board layers 13 and 14, and the inorganic board layer 15 constituting the partition panel 1 shown in FIGS. 2A and 2B will be described, but the present invention is not limited thereto.

-Front and back materials-
The front surface material 11 and the back surface material 12 are made of a metal material, and can be configured so as to be peeled off from the organic heat insulating board layers 13 and 14 when heated and to be greatly expanded and deformed to the heating side. .. As the front surface material 11 and the back surface material 12, those obtained by forming a metal material into a predetermined cross-sectional shape by press molding, extrusion molding, roll molding or the like can be used.

Examples of the metal material include hot-dip 55% aluminum-zinc-plated steel sheet, hot-dip zinc-plated steel sheet, and painted hot-dip 55% aluminum-zinc-plated steel sheet (painting: polyester resin, acrylic resin, silicon resin, amino-alkide resin). , Vinyl chloride resin, Fluorine resin, Epoxy resin, Urethane resin), Painted hot-dip zinc-plated steel plate (Painting: Polyester resin, Acrylic resin, Silicon resin, Amino-alkide resin, Vinyl chloride resin, Fluorine-based resin, epoxy-based resin, urethane-based resin), painted stainless steel plate (painting: polyester-based resin, acrylic-based resin, silicon-based resin, amino-alkide-based resin, vinyl chloride-based resin, fluorine-based resin, epoxy-based resin, Urethane-based resin), vinyl chloride resin film-clad / metal plate, high weather-resistant rolled steel (painting: epoxy resin, urethane-based resin), double-sided polyester resin-based coating / molten aluminum-plated steel plate, ferrite-based stainless steel plate, double-sided acrylic resin A system coating / zinc alloy plate or the like can be used. The above-mentioned coating of the metal plate is generally applied not only to the surface but also to the surface to be adhered to the organic heat insulating board. In this case, the adhesiveness of the adhesive at room temperature and the initial stage of heating are applied. It is preferable to select a resin from the viewpoint of flammability and use a polyester resin, a urethane resin, an acrylic resin, or the like.

The dimensions of the front surface material 11 and the back surface material 12 can be appropriately set according to the design, and for example, the length can be 0.6 to 12 m and the width can be 300 to 1000 mm. The thickness of the front surface material 11 and the back surface material 12 can be 0.3 to 1.6 mm in terms of strength, weight, and economy, but more preferably 0.4 to 1.0 mm. be.

-Organic insulation board layer-
The organic heat insulating board layers 13 and 14 are layers for providing heat insulating properties to the partition wall. The materials of the organic heat insulating board layers 13 and 14 are not limited as long as they have high heat resistance and do not burn when the temperature of the organic heat insulating board layer 14 on the back surface side of the inorganic board layer 15 rises.

As the resins constituting the organic heat insulating board layers 13 and 14, in addition to foams such as polyurethane resin, isocyanurate resin and phenol resin, polyimide foams and PET resin foams can be used. However, when the inorganic board layer 15 is made as thin as possible to reduce the weight, the organic heat insulating board layer 13 is considered from the viewpoint of the coating effect of the inorganic board layer 15 on the heating side and the heat resistance of the organic heat insulating board layer 14 on the non-heating side. , 14 preferably uses an organic heat insulating board layer in which the constituent resin is a thermosetting resin. As a result, when the front surface material 11 (back surface material 12) is heated, the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14) are peeled off, and then the organic heat insulating board layer 13 (14) is separated. It can be retained on the surface of the inorganic board layer 15.

In addition, in FIG. 2A and FIG. 2B, the organic heat insulating board layer is composed of two sheets, and the inorganic board layer 15 is sandwiched between them, but the organic heat insulating board layer can be composed of three or more sheets. .. For example, the organic heat insulating board layer is composed of four sheets, and the inorganic board layer 15 can be sandwiched between the second and third sheets.

--Thermosetting resin ---
As the thermosetting resin, polyurethane resin, isocyanurate resin, phenol resin and the like can be used. Among them, since it has high flame retardancy, it is preferable to use a phenol resin as a thermosetting resin, and it is still more preferable to select a resin having expandability when it is heated and carbonized.

As the organic heat insulating board layers 13 and 14, a resin foam obtained by mixing a thermosetting resin, a curing agent, a foaming agent and the like together, foaming and curing the resin foam can be used. Further, as the organic heat insulating board layers 13 and 14, those having face materials on the front and back surfaces may be used in terms of molding convenience and adhesiveness to the front surface material 11 (back surface material 12) and the inorganic board layer 15. good.

The organic heat insulating board layers 13 and 14 having such a resin foam and a face material cause a mixture of a thermosetting resin, a curing agent, a foaming agent, etc. mixed on the face material to be discharged onto the face material running at a constant speed. After that, it can be formed into a board shape between the conveyors in the curing furnace. Further, the organic heat insulating board layers 13 and 14 may be configured by a method in which the front surface material 11, the back surface material 12 and the inorganic board layer 15 are installed in advance with a gap at a predetermined interval, and then the organic resin material is injected into the gap. .. In this case, if the organic resin material is appropriately selected, the adhesive can also be used due to its self-adhesive force.

As the face material, polyester non-woven fabric, polypropylene non-woven fabric, aluminum foil, nonflammable processed paper, and a combination of these materials can be used. When the organic heat insulating board layers 13 and 14 are adhered to the inorganic board layer 15 via the face material, the organic heat insulating board layers 13 and 14 are prevented from falling off from the surface of the inorganic board layer 15 for a long time during the fire resistance test. That is essential. Therefore, it is most advantageous to use a nonflammable face material or a heat-resistant adhesive in terms of fire resistance, but since both of them are expensive, even if an organic face material is used as long as the fire resistance is not impaired. good. In addition, it is important to take measures against adhesive peeling and the like that occur when water vapor generated from the inorganic board layer 15 is accumulated between the face material and the inorganic board layer 15 during the fire resistance test, and a face material having moisture permeability is used. It is also preferable. From these points, the polyester non-woven fabric is preferable among the organic facing materials because it has a total performance of price, heat resistance, and moisture permeability.

The dimensions of the organic heat insulating board layers 13 and 14 can be appropriately set according to the design of the partition panel 1. As shown in FIG. 7A, the organic heat insulating board layers 13 and 14 can be configured by arranging a plurality of organic heat insulating boards 13b (14b) in the length direction, and the portion exceeding the length of the panel 1 is cut. The length can be adjusted. Further, the organic heat insulating board layers 13 and 14 can be configured by arranging a plurality of organic heat insulating boards 13b (14b) in the width direction, and the portion exceeding the width of the panel 1 can be cut to match the width. .. As described above, the organic heat insulating board layers 13 and 14 can be composed of a plurality of organic heat insulating boards 13b (14b) adjacent to each other in the in-plane direction.

The edges of these adjacent organic heat insulating boards 13b (14b) may be adhered to each other, but even if they are omitted, the fire resistance does not decrease even if a resin having a property of expanding during carbonization is used, and the panel can be used as a panel. It may be determined according to the bending strength, shear strength and manufacturing convenience of. Further, a gap may be provided between the edges of the adjacent organic heat insulating boards 13b (14b). In this case, when the front surface material 11 and the back surface material 12 are pressed when the organic heat insulating board 13b (14b) and the front surface material 11 (back surface material 12) are adhered to each other using an adhesive, the adhesive enters the gap and enters the gap. Adjacent organic heat insulating boards 13b (14) are connected to each other, and the strength performance of the panel 1 can be improved. Such an effect is particularly large when the organic heat insulating board 13b (14b) is thin.

When the organic heat insulating board 13b (14b) is composed of the resin foam and the face material described above and the gaps between the edges of the adjacent organic heat insulating boards 13b (14b) are adhered, an adhesive is applied to the edge surfaces to provide organic heat insulation. The boards 13b (14b) are pressed against each other. At that time, since the resin foam portion has elasticity, it is compressed, whereas the face material does not have elasticity, so that the face material near the edge surface becomes surplus and the adhesion of the edge surface deteriorates. As a result, the adhesiveness between the organic heat insulating boards 13b (14b) is lowered.

Therefore, as shown in FIG. 7B, it is preferable to remove the corner portion near the edge surface of the organic heat insulating board 13b (14b) to provide a recess. As a result, the face material 13c (14c) near the edge surface is removed, so that when the adjacent organic heat insulating boards 13b (14b) are pressed against each other, the face material 13c (14c) near the edge surface does not become excessive. Further, the adhesiveness of the fore-edge surfaces can be improved by forming a pooled portion of the adhesive that is left over when the fore-edge surfaces are pressed against each other. In this way, the adhesive strength between the organic heat insulating boards 13b (14b) can be improved.

The cross-sectional range for removing the corners is appropriately set in consideration of the amount of adhesive applied, the viscosity, the pressure for pressing the edge surface, etc., but is generally 1/4 circular or 1 with a radius of 1 mm to 5 mm. This may be done for a triangular portion having a side of 1 mm to 5 mm. Further, although it is generally provided over the entire length in the length direction, it is also preferable to remove a large portion such as the edge of the side where the adhesive tends to accumulate.

As described above, since the resin foam 13d (14d) has elasticity, the flatness of the edge surface itself and the dimensional error due to the removal of the corners due to the pressing of the organic heat insulating boards 13b (14b) against each other. Can be absorbed.

In terms of heat insulation, strength, and economy, the organic heat insulating board layers 13 and 14 have a thickness of 20 to 150 mm, more preferably 30 to 100 mm, and a density of 20 to 80, more preferably 25 to 50 kg / m ^3. And.

The adhesive for adhering the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14) is not particularly limited, and an organic adhesive, an inorganic adhesive, double-sided tape, or the like can be used.

-Organic adhesive-
When an organic adhesive is used as the adhesive, when the front surface material 11 (back surface material 12) is heated, the organic adhesive burns at about 250 to 400 ° C. and loses adhesiveness, so that the surface material 11 loses its adhesiveness. (Back surface material 12) and the organic heat insulating board layer 13 (14) can be satisfactorily peeled off. As a result, the organic heat insulating board layers 13 and 14, the inorganic board layer 15 and the back surface material 12 do not follow the deformation of the front surface material 11, and large deformations and cracks occur in them, and peeling between and inside the materials occurs. Rhagades can be prevented, the integrity and flatness of these materials can be maintained, and fire resistance can be exhibited.

Organic adhesives include urethane resin (main component: urethane resin, solvent: esters, ketones), epoxy resin (main component: (main agent) epoxy resin, (hardener) modified polyamine, modified polythiol, solvent. : Esters, ketones, alcohols), vinyl acetate resin (main component: vinyl acetate resin, solvent: alcohols, esters, ketones), modified silicon type can be used. Above all, since it is suitable for use at a low temperature, it is preferable to use a urethane resin-based adhesive or an epoxy resin-based adhesive as the organic adhesive.

In addition, as the inorganic adhesive, sodium silicate is the main component, and inorganic components such as silica, kaolin, talc, and clay minerals are added, and organic additives such as styrene-butadiene copolymer are used. In addition, those with improved workability can be used. However, since these adhesives have high heat resistance, they are less likely to be peeled off in the adhesive layer when the surface material 11 is heated. Except when an organic heat insulating material or a face material is used on the surface side of the core material, when all the surface side of the core material is also an inorganic material, the surface material 11 and the core material are easily peeled off. Therefore, it is necessary to design on such a premise.

-Inorganic board layer-
The inorganic board layer 15 is an important layer for exhibiting fire resistance as a panel, and can be made of lightweight cellular concrete, gypsum board, caucal board, or the like. Above all, the inorganic board layer 15 is preferably made of lightweight cellular concrete. The lightweight cellular concrete preferably has a specific density of about 0.5, and is preferably about 0.35, which is cured at high temperature and high pressure and reinforced with a reinforced mat or metal lath (steel wire mesh) whose inside is reinforced with a special rust preventive treatment. However, heat insulation and light weight are further excellent and preferable. Further, in the lightweight cellular concrete, a metal lath or a reinforcing bar mat can be easily arranged inside due to the characteristics of the manufacturing method.

When the inorganic board layer 15 is composed of gypsum board or caucal board, these materials have a large amount of water of crystallization and have been widely used for fireproof applications in the past, but after the crystal water is released, a large amount of warpage and cracks occur. Since it is generated, it is necessary to increase the thickness or load a nonflammable reinforcing material inside. Since it is difficult to load a reinforcing material inside by the current molding method, it is necessary to use a method such as stacking a plurality of sheets and sandwiching them between them. An organic adhesive can be used to bond the gypsum board and the caucal board, but if an inorganic adhesive using water glass or colloidal silica as a binder and an oxide such as alumina as a filler is used, the heating time It is preferable because the adhesiveness can be maintained for a long time during or after the heating is completed.

Further, as the nonflammable reinforcing material, a glass fiber net, a metal lath or the like can be used.

The dimensions of the inorganic board layer 15 can be appropriately set according to the design of the partition panel 1. As shown in FIG. 7C, the inorganic board layer 15 can be configured by arranging a plurality of inorganic boards 15a in the length direction, and the portion exceeding the length of the panel 1 can be cut to match the length. can. Further, the inorganic board layer 15 can be formed by arranging a plurality of inorganic boards 15a in the width direction, and the portion exceeding the width of the panel 1 can be cut to match the width. As described above, the inorganic board layer 15 can be composed of a plurality of inorganic boards 15a adjacent to each other in the in-plane direction.

The plurality of inorganic boards 15a constituting the inorganic board layer 15 shown in FIG. 7C are arranged so that the vertical joints are displaced, but the vertical joints may be arranged so as to be aligned.

When the inorganic board layer 15 is composed of a plurality of inorganic boards 15a, the edge surfaces of the plurality of inorganic boards 15a are bonded to each other with a fireproof adhesive, or a thermal expansion material is provided between the edge surfaces of the plurality of inorganic boards 15a. It is preferable to load or to fix the plurality of inorganic boards 15a to each other with respect to movement in the out-of-plane direction, the in-plane direction, or the out-of-plane direction and the in-plane direction by a connecting metal fitting, or to use these means together.

As a fire-resistant adhesive, sodium silicate is the main component, and inorganic components such as silica, kaolin, talc, and clay minerals are added, and organic additives such as styrene-butadiene copolymer are added for work. Those with improved sex can be used. In addition, a cement-based material to which a binder is appropriately added can also be used.

Further, as the thermal expansion material, the same material as the thermal expansion material arranged between the adjacent partition panels 1a and 1b described above can be used.

When the inorganic board layer 15 is arranged between the two organic heat insulating board layers 13 and 14, as shown in FIG. 7D, the horizontal joints in the organic heat insulating board layers 13 and 14 and the horizontal joints in the inorganic board layer 15 are formed. It is preferable that they are deviated in the length direction. Thereby, the strength of the partition panel 1 can be improved. This deviation is preferably about 1 to 3 times the thickness of the organic heat insulating board layers 13 and 14. Further, it is preferable to provide the same degree of deviation from the viewpoint of fire resistance, heat insulation, airtightness, sound insulation and moisture resistance.

Regarding the adhesion between the inorganic board layer 15 and the organic heat insulating board layers 13 and 14, it is important to select a material so that the carbonized organic heat insulating board does not fall off as much as possible during the fire resistance test. Although the fire resistance is improved by using the inorganic adhesive, it takes time and effort to manufacture the panel 1. When an organic adhesive is used, sufficient adhesive strength is maintained at least at 100 ° C, considering that the surface temperature on the heating side of the inorganic board stays at 100 ° C for a long time while the water of crystallization of the inorganic board layer 15 evaporates during the fire resistance test. In addition, it is necessary to select a material that does not cause a decrease in adhesive strength due to the ejected water vapor. As a material having such properties, it is preferable to use urethane resin, epoxy resin or the like. Further, it is preferable to use the same adhesive as the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14) because the production efficiency is excellent.

The amount of the adhesive applied ^{is preferably 100 to 500 g / m 2} per layer, and the type and surface flatness of the base material of each adhesive layer, the pressure and time of the press after application, and the partition panel. Determined according to the target performance.

When a large bending load is required for the partition panel 1, each adhesive layer may be designed to be firmly adhered until the base material is broken, and the amount of the adhesive applied is the surface. The distance between the material 11 (12) and the organic heat insulating board layer 13 (14) ^{is preferably 100 to 300 g / m 2,} and the distance between the organic heat insulating board layers 13 and 14 is preferably ^{100 to 300 g / m 2.} The distance between 13 (14) and the inorganic board layer 15 is preferably ^{200 to 500 g / m 2.}

If the amount of coating between the front surface material 11 (back surface material 12) and the organic heat insulating board layer 13 (14) is too large, it takes a long time to peel off when heated in the event of a fire, which is not preferable. In consideration of the above, 100 to 500 g / m ² is preferable. It is preferable that the adhesive spreads evenly over the entire layer by pressing, and the amount of adhesive applied and the press pressure are determined according to the viscosity of the adhesive, the flatness of the material to be adhered, and the ease of spreading of the adhesive. do. If the coating amount is too large between the organic heat insulating board layers 13 (14) and between the organic heat insulating board layer 13 (14) and the inorganic board layer 15, the adhesive will squeeze out from the layers during pressing, which is not preferable. ..

When the inorganic board layer 15 and the organic heat insulating board layers 13 and 14 are adhered to each other using an adhesive, a primer may be applied to the surface of the inorganic board layer 15 in advance before applying the adhesive. preferable. As a result, the inorganic board layer 15 can be impregnated with the primer to improve the adhesive strength between the inorganic board layer 15 and the organic heat insulating board layers 13 and 14.

By applying the primer, not only can the same adhesive strength be obtained even if the amount of adhesive applied is reduced by that amount, but also the trouble of cleaning dust and the like on the surface of the inorganic board layer 15 can be saved, and the inorganic board can be applied. It is possible to reduce the influence of the water content of the layer 15 and to reduce the variation in adhesive strength. Furthermore, the entire material cost related to adhesion can be reduced.

Heat resistance can be improved by using a thermosetting resin such as an epoxy-based, urethane-based, or phenol-based primer as the primer. On the other hand, although the acrylic primer is thermoplastic, it has relatively good heat resistance and is particularly excellent in terms of workability and price. Therefore, it may be used in consideration of these performances comprehensively.

Further, when the thickness of the inorganic board layer 15 is relatively small, if the inorganic board layer 15 and the organic heat insulating board layers 13 and 14 are adhered to each other by using an adhesive as described above, when the inorganic board layer 15 is placed in a high temperature environment due to a fire or the like. Adhesion may not be maintained. In such a case, if the organic heat insulating board layer 14 on the non-heated side and the inorganic board layer 15 are mechanically fixed, even after the adhesion between the organic heat insulating board layer 14 on the non-heated side and the inorganic board layer 15 is broken. , The fire resistance can be maintained without the inorganic board layer 15 falling off immediately. In the above description, the organic heat insulating board layer 13 is the heating side, but when a fire occurs on the opposite side of the partition wall, the heating side is the non-heating side, so that the organic heat insulating board layer 13 and the inorganic board layer 15 are used. Also needs to be mechanically fixed.

Specifically, the organic heat insulating board layers 13 and 14 and the inorganic board layer 15 can be mechanically fixed by using an anchor material A as shown in FIG. 8A, a screw V as shown in FIG. 8B, or the like. As a result, the fire resistance on the non-heated side can be maintained when placed in a high temperature environment.

As the anchor material A, a tip-expandable anchor or a tip-expandable nail can be used. These are for fixing the inorganic board layer 15 to the organic heat insulating board layer 13 (14). Inorganic board layers 15 are stacked, and their own weight is transmitted to the lower stage, and finally to the floor slab via the lower joint material. For safety, it is more preferable that the weight of each of the inorganic boards 15a constituting the inorganic board layer 15 can be borne by each anchor material A. In order to secure the pull-out strength, the area of the cross section of the anchor material A orthogonal to the axial direction is important, but in order to support its own weight acting in the vertical direction, the axial cross section of the anchor material A is important. The area of contact with the organic insulation board layer 13 (14) is important. In that case, it is preferable to use a shaft portion having a diameter of about 5 to 8φ.

Further, in the case of the screw V, it may be considered in the same manner as the anchor material A, but if the portion arranged on the organic heat insulating board layer 13 (14) is left in a linear shape without providing a screw, it is in the vertical direction. The contact state for the load bearing is more preferable. Further, it is preferable that the shape of the head of the screw V is not only an area orthogonal to the axial direction but also a flat head or a pan shape to increase the cross-sectional area in the axial direction.

Further, when a surface material such as a non-woven fabric is attached to the surface of the organic heat insulating board layer 13 (14), if the screw V is attached with the surface material left as much as possible, the head is depressed in the pulling direction. It is preferable because it improves not only the strength but also the proof stress in the vertical direction.

As shown in FIGS. 8A and 8B, when the organic heat insulating board layer 13 (14) has a two-layer structure, that is, the organic heat insulating board layer 13 (14) is used in two layers on one side of the inorganic board layer 15. In this case, it is preferable to use a pan shape in which the back side shape of the head is flat on the back surface side of the organic heat insulating board layer 13 (14) on the inorganic board layer 15 side.

On the other hand, as shown in FIG. 8C, when the organic heat insulating board layer 13 (14) has a one-layer structure, that is, when only one organic heat insulating board layer 13 (14) is used on one side of the inorganic board layer 15. It is necessary to slightly sink the entire head so as not to come into contact with the back surface material 12, but in that case, it is more preferable that the screw V is submerged together with the face material as a flat head. In FIG. 7C, the thermal expansion material 21 is filled between the edge surfaces of the inorganic board layer 15.

Further, especially when only one organic heat insulating board layer 13 (14) is used and the screw head is submerged for construction, if the screw head and the back surface material 12 are adhered by an adhesive, the screw head is used. The vertical displacement and rotation of the head are less likely to occur, and the proof stress in the vertical direction is improved. In this case, it is preferable that the screw head is subducted by about 1 to 5 mm because the adhesive is easily spread when the back surface material 12 and the organic heat insulating board layer 14 are bonded to each other with an adhesive. However, the organic heat insulating board layer 14 is deformed by the press pressure due to the press when the back surface material 12 and the organic heat insulating board layer 14 are bonded to each other. It is preferable to decide.

Further, when the screw head is excessively sunk, it is preferable to fill the portion where the screw head is sunk with an adhesive in advance before adhering the back surface material 12 to the organic heat insulating board layer 14. Further, even if the back surface material 12 and the screw head are peeled off, it is preferable to make the screw head a gentle curved surface or to provide a large groove in order to act as a shear resistance. Further, it is also effective to make the surface of the screw head rougher than the back surface material 12 because the adhesive remains on the screw head side and acts as a shear resistance.

On the other hand, when the front surface material 11 and the back surface material 12 are thin, the screw head, the front surface material 11 and the back surface material 12 are intentionally used in order to prevent the front surface material 11 and the back surface material 12 from being distorted due to the fine behavior of the screw head. May be designed so that they are not glued together.

In order to improve the proof stress in the vertical direction without excessively increasing the head depression strength in the pull-out direction, it is important to increase the diameter of the screw head without excessively increasing it.

Considering these, it is preferable to use a pan head screw V having a threaded portion outer diameter of 4 to 8φ, a shaft portion diameter of 4 to 8φ, a head diameter of 9 to 16φ, and a head thickness of about 4 to 9 mm. In the case of a flat head, it is preferable to use a screw portion with an outer diameter of 4 to 8φ, a shaft portion diameter of 4 to 8φ, a head diameter of 9 to 16φ, and a flat head angle of about 30 to 60 °. Further, the anchor material A and the screw V are struck from both the front surface material 11 side and the back surface material 12 side, but are struck at a distance of 1.5 times or more the thickness of the inorganic board layer 15 so that they do not interfere with each other. Is preferable, and it is more preferable to hit the ball at a distance of 2 times or more. It should be noted that the use of the screw V is preferable when it is desired to reduce the interval at which the anchor material A and the screw V are hit without causing damage due to the impact on the inorganic board layer 15 at the time of casting. Further, it is most strong that the screw portion provided on the screw V is only the inorganic board layer 15 portion, the organic heat insulating board layers 13 and 14 are shaft portions without partial screws, and the shaft portion has the same outer diameter as the screw portion. Although advantageous, such screws need to be prepared for each thickness of the heat insulating material, and are custom-made, resulting in high cost. Therefore, a full-threaded screw V is often used, but in this case, although some play occurs between the organic heat insulating board layers 13 and 14 and the screw V, there is no problem in practical use.

Here, a means for the partition wall having the joint structure according to the present invention (see the partition wall 2 shown in FIGS. 1A to 1C) to pass the fire resistance test by heating for 1 hour and following for 3 hours will be described. When the partition wall 2 is heated from the surface material 11 side, the surface material 11 is greatly deformed at the initial stage of heating, and the organic heat insulating board layer 13 on the heating side is carbonized during the heating time of 1 hour and then disappears. After that, it is necessary to prevent the penetration of flame and heat without breaking the positional relationship of the three layers of the inorganic board layer 15, the organic heat insulating board layer 14 on the non-heated side, and the back surface material 12 until the end.

In the three layers, first, the upper mounting material 24c and the lower mounting material 25c (hereinafter, the upper mounting material 24c and the lower mounting material 25c are combined with the skeleton of the floor slabs 22, 23, etc. by the upper anchor material 24b and the lower anchor material 25b, are combined. (Sometimes referred to simply as “mounting material”) is fixed, and the partition panel 1 is restrained in the out-of-plane direction by the upper mounting material 24c and the lower mounting material 25c. The upper fastening material 24c and the lower mounting material 25c may be combined with the upper fastening material 24a and the lower fastening material 25a (hereinafter, the upper fastening material 24a and the lower fastening material 25a are collectively referred to as a "fastening material". ) Are used to fasten to the back surface material 12. Next, the organic heat insulating board layer 14 on the non-heated side is fixed to the back surface material 12 with an organic adhesive. Finally, the inorganic board layer 15 is fixed to the organic heat insulating board layer 14 by using an organic adhesive and mechanical fixing means.

Stainless steel plates and hot-dip galvanized steel plates are used for the upper mounting material 24c and the lower mounting material 25c, and are designed in consideration of deformation due to assumed seismic force and heat during a fire. The upper mounting material 24c has a thickness of 2 ~ 6 mm with a vertical direction of 40 to 100 mm and a horizontal direction of about 30 to 60 mm, and the lower mounting material 25c has a thickness of 2 to 6 mm and a vertical direction of 40 to 100 mm and a horizontal direction of about 30 to 60 mm. Often used. The lengths of the upper mounting material 24c and the lower mounting material 25c are designed according to the construction method, but one side of the construction is about 1.8 to 5.4 m, and the other side is 0.1. It is convenient to use a material of about 0.9 m because it is possible to build on a long one first and then hold it down with a short one so that it will not fall over.

The upper mounting material 24c and the lower mounting material 25c include a through hole for constructing the anchor material and a through hole for constructing the fastener material. By providing through holes for fastening material construction in the upper mounting material 24c and the lower mounting material 25c in advance, it is possible to use tapping screws for thin steel plates to fix the front surface material 11 and the back surface material 12. These have a diameter of 4 to 5φ, a length of 15 to 30 mm, a thread height of 0.4 to 1.0, and a screw pitch of about 0.5 to 1.0. It is preferable because it has excellent shearing force, pull-out resistance, and deformation ability until breaking.

In order for the three layers to stand on their own in the event of a fire, the weights of the organic heat insulating board layer 14 and the inorganic board layer 15 fixed to the back surface material 12 and the back surface material 12 with only the upper fastener 24a on the non-heated side are vertically oriented. Support. Normally, the wall material is sandwiched between both sides by the mounting material and does not fall down, but in the event of a fire, the organic heat insulating board layer 13 on the heating side of the cross section of the wall material disappears and is greatly deformed. Therefore, due to the shearing force according to the weight of the organic heat insulating board layer 14 and the inorganic board layer 15 fixed to the back surface material 12 and the back surface material 12 via the back surface material 12 to the upper fastening material 24a on the non-heated side, and heat. Since a pulling force is generated according to the eccentricity generated by the deformation, it is necessary to fully consider these when designing.

Since the three layers are greatly curved out of the plane at the end of the 3-hour follow-up test, they must be designed in consideration of the influence of the bending. Further, when the upper fastener 24a is displaced and rotated in the vertical direction, the fastener is arranged in the back surface material 12 and the organic heat insulating board layer 14 in the structure of the present invention.

The inorganic board layer 15 is liable to crack even with a small local load, but is not affected by the displacement and rotation of the upper fastener 24a, and does not impair the function as a fire stop material. On the other hand, since the organic heat insulating board layer 14 is made of a soft material, defects and drops that impair fire resistance such that heat is easily transferred to the back surface material 12 due to the influence of displacement and rotation of the upper fastener 24a, etc. Does not occur.

In order for the upper fastener 24a to support the weight of the three layers, the hole of the upper attachment 24c through which the upper fastener 24a penetrates must not have a large play in the vertical direction, and is a round hole or a major axis. It is preferable that the hole has a long hole of about 10 to 20 mm. The through hole of the lower retaining material 25a provided in the lower mounting material 25c may be a round hole, but the major axis should be about 20 to 40 mm in order to absorb the displacement generated in the wall material due to the weight in the vertical direction. Is preferable.

As described above, in FIGS. 8A and 8B, two organic heat insulating board layers 13 and 14 are arranged on both sides of the inorganic board layer 15, respectively, and the organic heat insulating board layer 13 adjacent to the inorganic board layer 15 is provided. It is mechanically fixed to the inorganic board layer 15. In this case, there is no problem because the heads of the anchor material A and the screw V are buried in the adjacent organic heat insulating board layer 13.

On the other hand, as shown in FIG. 8C, when one organic heat insulating board layer 13 is arranged on both sides of the inorganic board layer 15 and the organic heat insulating board layers 13 and 14 are fixed to the inorganic board layer 15, an anchor is used. The heads of the material A and the screw V come into contact with the front surface material 11 and the back surface material 12 made of a metal material. Therefore, it is preferable to provide recesses for accommodating the heads of the anchor material A and the screw V on the surfaces of the organic heat insulating board layers 13 and 14 on the front surface material 11 and the back surface material 12.

However, if the shape of the head of the anchor material A or the screw V is made relatively thin and the back surface side of the head is made to be easily buried in the organic heat insulating board layers 13 and 14 at the time of driving, the recess is provided in advance. No need.

Further, if the sinking strength of the organic heat insulating board layers 13 and 14 of the heads of the anchor material A and the screw V is designed to be smaller than the fixing strength to the inorganic board layer 15, a tensile force acts on the anchor material and the screw V. It is possible to prevent the inorganic board layer 15 from being damaged at times, which is more preferable from the viewpoint of fire resistance.

According to the present invention, the fire resistance of the partition wall can be improved, which is useful in the construction industry.

1,1a, 1b Partition panel 2 Partition wall 11 Surface material 11a, 12a First bent portion 11ae, 12ae Ends 11b, 12b, 11bi, 11bo, 12bi, 12bo Second bent portion 12 of the first bent portion Back surface materials 13, 14 Organic heat insulating board layers 13a, 14a Recesses 13b, 14b Organic heat insulating boards 13c, 14c Face materials 13d, 14d Resin foam 15 Inorganic board layer 15a Inorganic board 15b End faces 16, 17 Adhesive layer 21 Thermal expansion material 22, 23 Floor slab 24a Upper fastening material 24b Upper anchor material 24c Upper mounting material 25a Lower fastening material 25b Lower anchor material 25c Lower mounting material 26 Upper joint material 27 Lower joint material 28 Sealing material 29 Bond breakers 50, 60, 70 joints A Anchor material D1 First recess D2 Second recess Db Bottom surface Ds Side wall h Long hole V screw for anchor material

Claims (6)

It is a joint structure between partition panels in which a plurality of partition panels are arranged adjacent to each other.
Each of the plurality of partitioning panels has a front surface material and a back surface material made of a metal material, and a core material arranged between the front surface material and the back surface material.
The front surface material and the back surface material have a first bent portion facing the inside of the partition panel at an end portion in the width direction of the partition panel, and are adjacent to the tip of the first bent portion. Has a second bend towards the partition panel
In at least one of the adjacent partition panels, the core material arranged between the front surface material and the back surface material is the first of the front surface material and the back surface material at the joint portion of the adjacent partition panel. It is provided with a first recess for accommodating a bent portion and a second bent portion of the lumber.
A joint structure characterized in that the second bent portions of the front surface material of the adjacent partition panel and the second bent portions of the back surface material are joined by a fixture. The second bent portion of the surface material of the partition panel of one of the two adjacent partition panels is arranged on the surface side of the second bent portion of the surface material of the other partition panel. ,And,
The joint structure according to claim 1, wherein the second bent portion of the back surface material of the other partition panel is arranged on the back surface side of the second bent portion of the back surface material of the one partition panel. .. Of the second bent portion in which the surface materials of the two adjacent partition panels are laminated, the length in the direction in which the partition panel of the second bent portion on the back surface side is adjacent is the second on the front surface side. The partition panel of the bent portion is longer than the length in the adjacent direction, and the second bent portion on the front surface side of the second bent portion in which the back surface materials of the two adjacent partition panels are laminated. The joint structure according to claim 1 or 2, wherein the length in the direction in which the partition panels are adjacent is longer than the length in the direction in which the partition panel of the second bent portion on the back surface side is adjacent. The fixture for joining the second bent portions of the surface materials of the two adjacent partition panels is brought closer to the first bent portion side of the surface material having the second bent portion arranged on the surface side. The fixture that joins the second bent portions of the back surface material of the two adjacent partition panels is the first of the back surface material having the second bent portion arranged on the back surface side. The joint structure according to any one of claims 1 to 3, which is arranged closer to the bent portion side of the above. The core material has an inorganic board layer and has an inorganic board layer.
Any of claims 1 to 4, wherein a second recess is provided on the end surface of one inorganic board layer of the two adjacent partition panels, and the thermal expansion material is housed in the second recess. The joint structure described in item 1. A partition wall in which the upper and lower ends of a plurality of partition panels having the joint structure according to any one of claims 1 to 5 are bridged and fixed between the floors of a building.

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