JP2014159690A - Connection structure of heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of a heat insulating panel, which can prevent connection between adjacent heat insulating panels from disengaging even when a large negative pressure is generated against an external wall.SOLUTION: A fitting part 3 and a fitted part 4 are provided at one end and another end of a heat insulating panel A respectively. The connection structure of the heat insulating panel is formed by fitting the fitting part 3 of one heat insulating panel A to the fitted part 4 of the other heat insulating panel A, in the adjacent heat insulating panels A and A. Respective ends of the heat insulating panels A are connected to each other by a reinforcement member 1.

Description

  The present invention relates to a connection structure for a heat insulating panel used for forming an outer wall or a partition wall of a building such as a building.

  Conventionally, a heat insulating panel is used to form an outer wall or a partition wall of a building, for example, a so-called sandwich panel formed by filling a core material between two metal shells is widely used. ing. Such a heat insulation panel, for example, by providing a fitting part at one end and a fitted part at the other end, fitting the heat insulation panels, and driving a screw or bolt, A device has been devised to stabilize the connection between adjacent heat insulating panels (for example, see Patent Document 1).

  FIG. 6A shows a part of an outer wall G formed by sequentially connecting a plurality of heat insulation panels A as an example. Such an outer wall G is used, for example, to form a side wall of a building or the like. As shown in FIG. 6A, the outer wall G has a structural material 21 as a column, and a trunk edge 28 is erected adjacent to the outdoor side of the structural material 21. Further, a plurality of trunk edges 28 are erected in parallel with each other at a predetermined interval from the trunk edge 28. Moreover, the heat insulation panel A as an outer wall material is spanned and fixed to the outdoor side of the plurality of trunk edges 28. In the form of FIG. 6, each heat insulation panel A is arranged long in the lateral direction (horizontal direction) of the outer wall. FIG. 6B is a cross-sectional view of the outer wall G of FIG. 6A, and shows a connection portion between the heat insulating panels A in the vertical direction of the outer wall G (direction perpendicular to the horizontal plane). . As shown in FIG. 6 (b), the heat insulation panel A is formed by filling a heat insulating material 5 between two metal skins 11 and 12 (for example, metal plates), and has one end portion. The fitting portion 3 is formed, and the fitted portion 4 is formed at the other end portion. And in the heat insulation panels A and A which adjoin in the vertical direction of an outer wall, the fitting part 3 of one heat insulation panel A and the to-be-fitted part 4 of the other heat insulation panel A are mutually fitted, and heat insulation panel A The two are connected. Note that the fixing member 2 such as a screw or a nail is used to attach the heat insulation panel A to the trunk edge 28 as shown in the figure. Moreover, in order to ensure waterproofness between the edge parts of the adjacent heat insulation panel A, the waterproof member 13 is interposed.

JP-A-8-184159

  However, in the conventional method of connecting the heat insulation panels A, the insulation panels A and A are fitted together by a negative pressure when a wind load is applied to the outer wall G of the building C as shown in FIG. Could come off. In general, as shown in FIG. 7, when wind W is blown on the outer wall G and a wind load is applied, positive pressure is generated on the outer wall G that receives the wind W in front. When the wind W passes around the building C, negative pressure, that is, a pulling force is generated on the side surface and the top surface of the building C other than the surface where the positive pressure is generated. In FIG. 7, the direction of the arrow indicating the wind W indicates the blowing direction of the wind, the positive pressure is indicated by a solid block arrow (except for the wind W arrow), and the negative pressure is indicated by a broken block arrow. ing.

  FIG. 8 shows a state in which the negative pressure (broken block arrow) is generated and the heat insulation panels A and A are disengaged from each other. When the negative pressure reaches a certain level or more, the fitting portion 3 and the fitted portion 4 may be disengaged as shown in FIG. Thus, if the connection between the adjacent heat insulation panels A is not sufficient, the fitting may be disengaged due to the negative pressure. This causes a decrease in the appearance of the building C, a decrease in the heat insulation performance, and a safety aspect. There was also a risk of damage.

  The present invention has been made in view of the above points, and has a heat insulating panel connection structure capable of suppressing the disconnection between adjacent heat insulating panels even when a large negative pressure is generated on the outer wall. It is intended to provide.

  The connection structure of the heat insulation panel which concerns on this invention is provided with a fitting part and a to-be-fitted part in the one end part and other end part of a heat insulation panel, respectively, The said fitting part and one side of one heat insulation panel of an adjacent heat insulation panel A heat insulating panel connection structure in which the fitted portion of the heat insulating panel is fitted, and the end portions of the heat insulating panel are connected by a reinforcing member.

  Moreover, in the connection structure of the heat insulating panel, the reinforcing member is provided with at least a first fixing tool and a second fixing tool, and the first fixing tool is provided on the surface of one heat insulating panel. It is preferable that the second fixing tool is connected to an end of the other heat insulating panel.

  Moreover, it is preferable that the said reinforcement member is formed in the disk shape.

  Moreover, it is preferable that both the first fixing tool and the second fixing tool are screws.

  According to the connection structure of the heat insulation panel according to the present invention, even if a wind load acts on the outer wall of the building and a negative pressure is generated, it is possible to suppress disconnection between adjacent heat insulation panels, It is possible to suppress a decrease in appearance and a decrease in heat insulation performance.

An example of embodiment of the connection structure of the heat insulation panel of this invention is shown, (a) is the front view from the indoor side of the outer wall formed by attaching a plurality of heat insulation panels, (b) is the sectional view of the side And it is an enlarged view of the connection part of adjacent heat insulation panels, (c) is a modification of (b), Comprising: It is an enlarged view of the connection part of adjacent heat insulation panels. It is a perspective view which shows an example of embodiment same as the above. It is side surface sectional drawing in the connection structure of a heat insulation panel which shows an example of other embodiment same as the above. The mode of the test for measuring the connection intensity | strength of a heat insulation panel is shown, (a) is a top view of a reinforcement tool, (b) is the front view, (c) is the side view. It is a graph which shows the test result of the Example of the connection strength of a heat insulation panel, and a comparative example, and shows the relationship between a trunk edge space | interval and a wind pressure. A conventional example is shown, (a) is a perspective view of an outer wall formed by attaching a plurality of heat insulation panels, (b) is a cross-sectional view of a side surface thereof, and is an enlarged view of a connection portion between adjacent heat insulation panels. . It is the schematic which shows a mode that a wind is blown on a building and a positive pressure and a negative pressure generate | occur | produce. It is an enlarged view which shows a mode that the connection of heat insulation panels remove | deviates by a negative pressure, and shows the cross section of the connection part of heat insulation panels.

  Hereinafter, modes for carrying out the present invention will be described.

  FIG. 1A shows a part of an outer wall G formed by attaching a plurality of heat insulating panels A, A,..., And is a front view when viewed from the indoor side. Moreover, FIG.1 (b) has shown sectional drawing of the side surface in Fig.1 (a), and has shown the figure which expanded the connection part of two adjacent heat insulation panels A and A. FIG. Further, FIG. 2 shows a perspective view of a part of the outer wall G described above. Hereinafter, the connection structure of the heat insulation panel will be described in detail with reference to the embodiment of FIGS.

  The outer wall G in the embodiment of FIGS. 1 and 2 includes at least a trunk edge 28, a heat insulating panel A, and the reinforcing member 1.

  As the heat insulation panel A, as shown in FIGS. 1 and 2, for example, a panel formed in a plate shape with a substantially rectangular shape in plan view can be used. In the heat insulation panel A of this Embodiment, the heat insulating material 5 is filled and formed as a core material between the two metal shells 11 and 12. The heat insulation panel A may have a refractory material and the like between the two metal shells 11 and 12 together with the heat insulating material 5.

  In the embodiment of FIGS. 1 and 2, one metal skin 11 is used as the outdoor side (outdoor side) and the other metal skin 12 is used as the indoor side (indoor side), but the opposite may be possible. In addition, in this invention, it is not limited to the heat insulation panel A like this embodiment, You may use the various panel of another structure. Further, the vertical and horizontal dimensions of the heat insulating panel A are not particularly limited, and can be appropriately set according to the size of the outer wall G to be formed.

  The metal shells 11 and 12 are formed by, for example, rolling a known metal plate. As the metal plate, a stainless steel plate, a galvanized steel plate, a coated steel plate, a Galvalume steel plate (registered trademark), or the like is used. it can. As the heat insulating material 5, for example, an inorganic fiber plate such as rock wool or glass wool, or a resin foam such as phenol foam, urethane foam, or isocyanurate foam can be used.

  The metal skins 11 and 12 on both sides of the heat insulation panel A, that is, the indoor side and the outdoor side surfaces are both formed flat. In FIGS. 1 and 2, among the surfaces on both sides of the heat insulation panel A, the surface disposed on the indoor side is denoted as the indoor side surface 20 a and the surface disposed on the outdoor side is denoted as the outdoor side surface 20 b.

  One end portion (hereinafter referred to as one end portion) of the heat insulation panel A has a fitting portion 3 that is formed to project outward. The fitting part 3 is formed over substantially the entire length of one end of the heat insulating panel A. The cross-sectional shape of the fitting part 3 is constant over the substantially full length of the one end part of the heat insulation panel A, as shown in FIG.1 (b).

  On the other hand, the other end portion (hereinafter referred to as the other end portion) of the heat insulation panel A has a fitted portion 4 formed to be recessed in the end surface of the heat insulation panel A. In addition, the other end part of the heat insulation panel A means the edge part mutually opposed with the one end part of said heat insulation panel A. The fitted portion 4 is formed over substantially the entire length of the other end portion of the heat insulating panel A. The cross-sectional shape of the fitted portion 4 is constant over substantially the entire length of the other end portion of the heat insulation panel A as shown in FIG.

  In the embodiment of FIG. 1, the heat insulating panel A is formed with the fitting portion 3 at the upper end portion and the fitted portion 4 at the lower end portion, but this may be reversed.

  The fitting part 3 is normally formed thinner than the thickness of the heat insulation panel A, and the fitted part 4 is formed in a shape that allows the fitting part 3 to be inserted and fitted. The thickness of the heat insulation panel A here means the distance from the indoor side surface 20a to the outdoor side surface 20b.

  In the case of the heat insulating panel A used in the embodiment of FIG. 1, as described below, the fitting portion 3 and the fitted portion 4 are formed by bending the metal skins 11 and 12, respectively (bending processing). (See FIG. 1 (b) in particular).

  Of the two metal skins 11 and 12, one end of the metal skin 11 is bent to form a concave step portion 8 having a substantially inverted L-shaped cross section. The concave portion 9 for the fastener having a substantially inverted U-shaped cross section is formed by being folded back. Further, the outer side bent piece 10 having a substantially inverted L-shaped cross section is formed by bending at the tip of the fixing tool recess 9. The distal end of the outdoor folded piece 10 is arranged inside the heat insulation panel A (the heat insulating material 5 side).

  In addition, a bent portion 6 is formed on the other end portion of one metal skin 11 by bending back at the tip thereof inward (insulating material 5 side). The tip of the bent portion 6 is further bent into the inner side (the heat insulating material 5 side) substantially perpendicularly.

  On the other hand, of the two metal skins 11 and 12, one end of the other metal skin 12 is bent substantially vertically to form a recess 16 having a substantially L-shaped cross section. The tip of the recessed portion 16 is further bent into the inner side (insulating material 5 side) substantially perpendicularly. Further, a bent portion 7 is formed at the other end portion of the metal skin 12 by bending back at the tip thereof inwardly (insulating material 5 side). The distal end of the bent portion 7 is further bent to the inner side (the heat insulating material 5 side) substantially perpendicularly.

  When the one end part and the other end part of each of the two metal skins 11 and 12 are configured as described above, as in the heat insulation panel A of the present embodiment, the outdoor bent piece 10 and the recessed part 16, A region including the heat insulating material 5 interposed between them corresponds to the fitting portion 3. Further, the region including the bent portion 6 and the bent portion 7 and the heat insulating material 5 interposed therebetween corresponds to the fitted portion 4. In FIG. 1B, the heat insulating material 5 is partially exposed at the tip of the fitting portion 3, but the metal skins 11 and 12 may be bent to cover the exposed portion of the heat insulating material 5. . In addition, although the heat insulating material 5 is partially exposed at the tip portion of the fitted portion 4, similarly, the metal skins 11 and 12 may be bent to cover the exposed portion of the heat insulating material 5.

  Of course, in this invention, the fitting part 3 and the to-be-fitted part 4 of the heat insulation panel A are not limited to the said shape, It can form in a suitable shape. In addition, in the embodiment of FIG. 1, the shape of the left and right end portions of the heat insulation panel A is not particularly limited. For example, the end portions of the heat insulation panels A adjacent on the left and right can be engaged with each other and connected. It may be suitably formed in any shape or may be formed on a substantially flat surface. When the left and right end portions of the heat insulating panel A are formed in a substantially flat surface, a sealing material or the like may be filled between the side end portions of the adjacent heat insulating panels A.

  The trunk edge 28 corresponds to a base member for receiving the heat insulation panel A when the heat insulation panel A is attached to the wall. In the outer wall G of the present embodiment, a plurality of trunk edges 28 are provided, and these trunk edges 28 are arranged with a predetermined interval therebetween. Each trunk edge 28 is installed in parallel with each other. Moreover, what is necessary is just to set the space | interval of the adjacent trunk edge 28 according to the dimension of the width | variety of the heat insulation panel A, and the required wind-proof pressure. The relationship between the space between the trunk edges 28 and the wind pressure will be described in detail later with reference to FIG. 5 (Example). When the outer wall G forms a side wall of a building or the like, the trunk edge 28 is provided so as to extend in a direction perpendicular to the horizontal plane, and serves as a so-called vertical trunk edge. In this case, for example, the trunk edge 28 can be fixed by placing one end side (the ground side) on the base. In FIG. 1B, the trunk edge 28 is omitted.

  The heat insulation panel A is fixed by being stretched across the plurality of trunk edges 28 provided as described above. When the heat insulation panel A is attached to the trunk edge 28, as in the embodiment of FIGS. 1 and 2, when the outer wall G forms the side wall of the building, the fitting portion 3 is on the upper end side with respect to the outer wall G. And the heat insulation panel A can be provided so that the to-be-fitted part 4 may be arrange | positioned with respect to the outer wall G at the lower end side.

  The heat insulation panel A can be fixed to the body edge 28 by a conventional method, and can be performed by using a fixing tool 2 such as a screw or a bolt. The position where the fixing tool 2 is provided is not particularly limited, but it is preferable that the fixing tool 2 is driven into the fixing tool recess 9 formed on one end side of the heat insulating panel A (see FIG. 6B). Specifically, the fixing tool 2 is driven from the fixing tool recess 9 toward the heat insulating material 5, and the heat insulating material 5 and the metal shell 12 are penetrated so that the tip of the fixing tool 2 is driven into the trunk edge 28. To do. In addition, in FIG.1 (b), illustration of the fixing tool 2 inserted in the recessed part 9 for fixing tools is abbreviate | omitted. A plurality of the fixing tools 2 may be driven into one heat insulating panel A. Moreover, you may make it provide the location which provides the fixing tool 2 not only in the recessed part 9 for fixing tools but in another part.

  As described above, one heat insulation panel A is attached and fixed to the trunk edge 28, and then a new heat insulation panel A is similarly attached and fixed to the upper side. At this time, the fitting portion 3 of the existing heat insulation panel A (the lower heat insulation panel A in FIG. 1B) is fitted to the fitting portion 4 of the heat insulation panel A to be newly attached (the upper side in FIG. 1B). To be plugged into. When the fitting portion 3 is inserted into the fitted portion 4 as described above, the bent portion 6 is disposed so as to cover the fixing tool recess 9 as shown in FIG. Further, in a state where the fitting portion 3 is inserted into the fitted portion 4, the tip of the bent portion of the bent portion 6 may be in contact with the metal skin 11 of the lower heat insulating panel A. FIG. You may have a clearance gap like (b). When there is a gap, the gap is formed as a joint of the outer wall G. On the other hand, the tip of the bent portion 7 may be in contact with the metal skin 12 of the lower heat insulating panel A, or may have a gap S as shown in FIG.

  As described above, in the heat insulating panels A and A adjacent in the vertical direction, the fitting portion 3 of one heat insulating panel A (lower side in FIG. 1B) and the other heat insulating panel A (in FIG. 1B) The heat insulation panels A and A which adjoin each other are connected by the upper part) to-be-fitted part 4 being fitted.

  In inserting the fitting portion 3 into the fitted portion 4, if the waterproof member 13 is provided in advance over the entire length (top end) of the fitting portion 3, the fitting portion 3 and the fitted portion 4 are fitted. The waterproof member 13 is sandwiched between the end portions of the adjacent heat insulating panels A. In this case, the waterproof property of the outer wall G can be improved. In addition, it can replace with the waterproof member 13 and can also use a well-known expansion felt, In this case, the fire resistance of the outer wall G can be improved. Of course, the waterproof member 13 and the expansion felt may be used in combination.

  As shown in FIG.1 and FIG.2, after connecting the heat insulation panels A and A adjacent on the upper and lower sides, the connection of the edge part of the heat insulation panel A adjacent on the upper and lower sides is reinforced by providing the reinforcement member 1. To do.

  As the reinforcing member 1, for example, a flat plate (disk) having a substantially circular shape in plan view as shown in FIG. 1 can be employed. Of course, the reinforcing member 1 is not limited to a disk shape, and may be a flat plate formed in a substantially rectangular shape, a substantially triangular shape, or an elliptical shape in plan view. The reinforcing member 1 can be formed of a known metal material or the like, and the processing method may be performed by a known means.

  The reinforcing member 1 is provided and fixed on at least one surface of the heat insulation panel A, and is provided at a connection portion between the adjacent heat insulation panels A and A. In the outer wall G of the embodiment of FIGS. 1 and 2, the reinforcing member 1 is disposed in the vicinity of the end of the indoor side surface 20a (surface on the metal skin 12 side) of the heat insulating panels A and A adjacent vertically. It fixes so that the indoor side surface 20a (surface by the side of the metal skin 12) of the heat insulation panel A may be bridged.

  The method for fixing the reinforcing member 1 to the heat insulation panel A is not particularly limited, but the reinforcing member 1 is formed by using rivets as the fixing tool 2 as in the embodiment of FIGS. Can be fixed to the heat insulation panel A. FIG. 1 (b) uses a general-purpose blind rivet as the fastener 2. On the other hand, FIG.1 (c) replaces the fixing tool 2 in FIG.1 (b) with the special item rivet, what is called valve tight. In the connection structure of the heat insulation panel of FIG.1 (b), (c), all are the same structures except the fixing tool 2 being different. By using such rivets, the attachment strength of the reinforcing member 1 to the heat insulating panel is increased, so that the connection structure of the heat insulating panel is further stabilized.

  When fixing the reinforcing member 1 to the heat insulation panel A with the fixing tool 2, it is preferable to use at least two fixing tools 2 as shown in FIGS. Hereinafter, one of the two fixing tools 2 is a first fixing tool 2 and the other is a second fixing tool 2.

  Then, the first fixing tool 2 is driven from the surface of the reinforcing member 1 to penetrate the reinforcing member 1 and is inserted into one of the adjacent heat insulating panels A (the upper heat insulating panel A). In this case, the tip of the first fixing tool 2 is in a state of being embedded in the heat insulating material 5 through the metal skin 12. On the other hand, the second fixing tool 2 is driven from the surface of the reinforcing member 1 to penetrate the reinforcing member 1 and inserted into the other heat insulating panel A (lower heat insulating panel A) of the adjacent heat insulating panels A. . The distal end of the second fixing tool 2 is also embedded in the heat insulating material 5 through the metal shell 12. By providing the 1st fixing tool 2 and the 2nd fixing tool 2 as mentioned above, the reinforcement member 1 is connected and fixed to both the heat insulation panels A and A which adjoin. Of course, the number of the fixing tools 2 provided is not limited to two, and three or more may be provided.

  After connecting the end portions of the heat insulation panels A and A in the above procedure and providing the reinforcing member 1 at the connection portion, the new heat insulation panels A are sequentially fitted into the existing heat insulation panel A in the same procedure. At the same time, the connection is reinforced by attaching to the trunk edge 28 and further fixing the reinforcing member 1. After the heat insulation panel A is provided over the longitudinal direction (fitting direction) of the outer wall G by repeating such a procedure, the plurality of heat insulation panels A are similarly longitudinally arranged in the lateral direction (direction perpendicular to the fitting direction). By providing them while being connected in the direction, an outer wall G as shown in FIGS. 1 and 2 is formed. In addition, you may make it provide a sealing material etc. suitably between the heat insulation panels A and A adjacent in the horizontal direction.

  In the outer wall G, as described above, the reinforcing member 1 is provided on the indoor side surface 20a of the heat insulating panel A, so that the reinforcing member 1 cannot be seen from the outdoor side, that is, from the outside of the building. . Of course, the reinforcing member 1 may be provided on the outdoor side surface 20b of the heat insulating panel A, but the reinforcing member 1 is preferably provided on the indoor side surface 20a of the heat insulating panel A in that the design of the exterior of the building is difficult to deteriorate.

  Even if the negative pressure due to the wind W being blown on the outer wall G is generated by reinforcing the connection between the adjacent heat insulating panels A by the reinforcing member 1 (see FIG. 7), the negative pressure causes The fitting between the heat insulation panels A is difficult to come off. That is, since the connection portion is reinforced by the reinforcing member 1, it is possible to suppress a phenomenon in which one of the heat insulation panels A is disengaged due to the negative pressure as illustrated in FIG. 8.

  In particular, if the first fixing tool 2 and the second fixing tool 2 are used to connect and reinforce the reinforcing member 1 to both of the adjacent heat insulating panels A, a stronger connection becomes possible. The disengagement is further suppressed.

  Moreover, when the reinforcing member 1 is formed in a disk shape as in the embodiment of FIGS. 1 and 2, the positioning becomes easy when the reinforcing member 1 is arranged at the connection portion between the heat insulating panels A. . That is, when the reinforcing member 1 has a disk shape, it is easy to identify the central portion of the reinforcing member 1, and thus the reinforcing member 1 can be easily disposed at the center of the connection portion of the adjacent heat insulating panels A. Therefore, the connection state of the heat insulation panel A by the reinforcing member 1 can be further strengthened.

  When the reinforcing member 1 has a disk shape, the dimensions thereof are not particularly limited. For example, the width (lateral direction) of the heat insulation panel A is 600 to 1000 mm, and the length in the vertical direction (fitting direction) is 750. When formed in ˜3000 mm, the diameter of the reinforcing member 1 can be set to 100 to 150 mm. Moreover, the thickness of the reinforcing member 1 can be 0.5-1.2 mm from a viewpoint of construction property or design property.

  A plurality of reinforcing members 1 may be provided at a predetermined interval at a connection portion between a pair of heat insulating panels A and A adjacent vertically.

  FIG. 3 shows another embodiment of the heat insulating panel connection structure, which is a side sectional view of the heat insulating panel A, and is an enlarged view showing the connecting portions of the heat insulating panels A and A adjacent in the vertical direction. In the present embodiment, the reinforcing member 1 is fixed to the heat insulating panel A using screws as the fixing tool 2. When the fixing tool 2 is a screw, for example, a commercially available point screw or the like can be used. In particular, it is preferable that the pulling holding force at a thickness of 1.0 mm of the test material is 150 kgf or more.

  When the reinforcing member 1 is fixed using such a screw, compared to the case where the other fixing tool 2 is used, the connection strength between the heat insulating panels adjacent to each other in the upper and lower directions can be further increased, and the disengagement can be prevented. It will be further suppressed. For example, compared to the case where a rivet is used as the fixing tool 2 as in the embodiment of FIG. 1, the fitting strength (negative pressure when the fitting is disengaged) can be improved by about 8%. In addition to rivets and screws, screws, bolts, and the like can be used as the fixture 2, but it is preferable to use point screws in terms of further suppressing disengagement as described above.

  In addition, when a screw is used, a work for opening a pilot hole is not required, and a dedicated tool is also unnecessary, so that workability is improved and costs can be reduced as compared with the case where rivets are used. And when it is a screw | thread, even when the thickness of the reinforcement member 1 is thin (for example, 0.8 mm), it becomes applicable, and construction can be performed simply by this. And if it is a screw, since the color matching with the reinforcement member 1 becomes unnecessary, it will become possible to perform construction without problems even at the site where design properties are required.

  In the connection structure of the heat insulation panel of the present invention, the insulation panels A and A are not easily disengaged from each other, and can be suitably used for the outer wall G of buildings such as buildings and houses.

  Hereinafter, the present invention will be specifically described by way of examples.

Example 1
Using the heat insulation panel A and the reinforcing member 1 shown below, a test body of the outer wall G was manufactured in the same procedure as the outer wall G construction procedure shown in FIGS. The number of heat insulating panels A used was four, and the number of the barrel edges 28 used was three.
・ Heat insulation panel: Fireproof Esgard BL (manufactured by Nippon Steel & Sumikin Steel Co., Ltd., dimension in the width direction 910 mm, dimension in the vertical direction 1900 mm, dimension in the thickness direction 50 mm)
・ Reinforcing member (disc shape): Diameter 120mm, thickness 0.8mm (steel plate)
Also, for attaching the reinforcing member 1 to the heat insulating panel A, two steel rivets having a diameter of 4.8 mm and a total length of 20 mm are prepared, and these are driven into a position as shown in FIG. The reinforcing member 1 was fixed. In addition, the fixing of the heat insulation panel A to the trunk edge 28 was made such that two screws were inserted into one trunk edge 28 per one heat insulation panel A.

(Comparative Example 1)
The used heat insulation panel A was changed as follows, and the outer wall G was constructed in the same procedure as in Example 1 except that the reinforcing member 1 was not used.
・ Insulation panel: Fire-resistant Esgard BL (manufactured by Nippon Steel & Sumikin Steel Co., Ltd., width direction dimension 600 mm, length direction dimension 1900 mm, thickness direction dimension 50 mm)
(Comparative Example 2)
The outer wall was constructed in the same procedure as in Example 1 except that the reinforcing member 1 was not used. The heat insulation panel A used is the same as in Example 1.

(Evaluation of wind pressure resistance of specimen)
Using the specimens of Example 1, Comparative Example 1 and Comparative Example 2 above, wind resistance was measured by a tester 40 (manufactured by Tsukubariku Seiki Co., Ltd.) by the method shown below. This measurement was performed while changing the interval between the adjacent barrel edges 28 of each test specimen (trunk edge interval).

  4B and 4C show the test body set in the testing machine 40. FIG. 4B is a front view on the side opposite to the installation side of the enclosure 41 to be described later, and FIG. 4C shows a side view of the test body 40. FIG.

  As shown in FIG. 4, the testing machine 40 includes a pair of test body support portions 43 and 43 for supporting the test body, an enclosure 41 provided so as to surround the front of the test body and the space in front of the test body, and the enclosure. A support base 42 that supports the portion 41 and a displacement meter 45 that measures the displacement of the test body are provided. The enclosure 41 is a frame formed in substantially the same shape and size as the contour of the test body, and is formed with both sides opened. The displacement meter 45 is supported by a displacement meter support rod 46.

  First, the upper end and the lower end of the test body were sandwiched between the pair of test body support portions 43 and 43 so that the outdoor side surface 20b faced the opening surface side of the enclosure portion 41. The test body was installed so that the fitting part 3 of each heat insulation panel A constituting the test body was arranged at the lower end and the fitted part 4 was arranged at the upper end. A plurality of displacement gauges 45 are attached at arbitrary positions on the indoor side surface 20a.

  As described above, the test body is installed in the testing machine 40, and a load is applied to the test body in the direction of the arrow in FIG. 4 (c) to reproduce the negative pressure. The negative pressure (wind pressure) when disengagement occurred was observed. The negative pressure was generated by sucking air from the opening side of the enclosure portion 41 with a fan. The test results are shown in FIG.

  FIG. 5 shows the test results of the test bodies of Examples and Comparative Examples, and is a graph showing the relationship between the trunk edge interval of the test body and the wind pressure.

  FIG. 5 c (indicated by a broken line) is a test result of the test body of Example 1, that is, a test body having a connection structure for a heat insulating panel of the present invention, and b (indicated by a solid line) is that of Comparative Example 2. It is a test result of the test body which has not provided the reinforcement member 1 in the connection part of the test body, ie, the heat insulation panel A (all are the width | variety of the heat insulation panel A 910 mm). In the graph of FIG. 5, a part of the broken line c overlaps with a solid line b.

  From this result, it can be seen that the wind pressure at which the disengagement occurs is higher in Example 1 than in Comparative Example 2 when the trunk edge interval is about 1.25 m or less. More specifically, for example, the wind pressure at which disengagement occurs at a trunk edge interval of 1 m is about 2.2 kPa in Comparative Example 2, whereas it is about 2.8 kPa in Example 1. That is, it is shown that the first example is less likely to be disengaged than the second comparative example. Further, as can be seen from comparison with a (Comparative Example 1) indicated by a solid line in FIG. 5, the test body of Example 1 is Comparative Example 1 although the width of the heat insulation panel A is 910 mm. It can be seen that the specimen has a wind pressure strength equivalent to that of the heat-insulating panel having a width of 600 mm (without the reinforcing member 1). In general, considering that the panel having a shorter width has higher wind pressure strength, if the reinforcing member 1 is provided, even if the width of the heat insulation panel A is increased, the panel has a high wind pressure strength. I understand.

  From the above results, it can be seen that in the heat insulating panel connection structure of the present invention, the connection strength between the heat insulating panels A and A can be increased, and high durability can be provided to the outer wall. Thus, since the connection strength of the connection portion can be increased, the connection strength is less likely to be lowered even if the width direction dimension of the heat insulation panel A is made longer than before, so that the heat insulation panel having a larger width dimension than before. A can be used actively. Therefore, the number of heat insulating panels A used can be reduced, and the workability of the outer wall can be improved.

A Insulation panel 1 Reinforcing member 2 Fastener 3 Fitting part 4 Fitted part

Claims (4)

A fitting portion and a fitted portion are respectively provided at one end and the other end of the heat insulating panel, and the fitting portion of one heat insulating panel of the adjacent heat insulating panel and the fitted portion of the other heat insulating panel are provided. It is a connection structure of a heat insulating panel formed by fitting,
A heat insulating panel connection structure, wherein ends of the heat insulating panels are connected by a reinforcing member.   The reinforcing member is provided with at least a first fixing tool and a second fixing tool, and the first fixing tool is connected to an end portion of one heat insulating panel, and the second fixing tool is the other. The heat insulation panel connection structure according to claim 1, wherein the heat insulation panel connection structure is connected to an end portion of the surface of the heat insulation panel.   The heat insulating panel connection structure according to claim 1, wherein the reinforcing member is formed in a disk shape. 4. The heat insulating panel connection structure according to claim 1, wherein each of the first fixing tool and the second fixing tool is a screw. 5.

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