Warehouse wall structure and construction method

Abstract

To provide a warehouse wall structure and a construction method thereof, which can effectively prevent a wall body formed by integrating a plurality of heat insulating panels from being damaged by external forces acting during an earthquake or the like while ensuring heat insulation and fire resistance. [Solution] A wall 2 is placed between adjacent structures 20, 21 spaced apart vertically, and the wall 2 is formed by airtightly joining the adjacent, opposing side ends of multiple insulation panels 3 arranged side by side, and at least one of the upper edge 2a or lower edge 2b of the wall 2 is held in a state where it can slide across the width of the wall 2 relative to the corresponding structures 20, 21, thereby constructing a warehouse wall structure 1.

Description

[Technical Field]

[0001] The present invention relates to a warehouse wall structure and a method for constructing the same, and more particularly to a warehouse wall structure and a method for constructing the same, which can effectively prevent damage to a wall formed by integrating multiple insulation panels while ensuring thermal insulation and fire resistance, due to external forces acting during earthquakes, etc. [Background technology]

[0002] The wall structure of a refrigerated warehouse requires high insulation to maintain a constant temperature inside, and also fire resistance in the event of a fire. Therefore, the wall structure of a refrigerated warehouse uses insulation panels, each consisting of an insulation layer (insulation member) sandwiched between two metal surface plates (metal plates), and a wall is formed by airtightly joining multiple insulation panels together (see, for example, Patent Document 1). When heated in the event of a fire, insulation panels undergo bulging deformation due to thermal expansion. Therefore, to prevent this bulging deformation, it has been common to fix both the upper and lower edges of the wall to the structures above and below (floor slab, foundation), as in the wall structure described in Patent Document 1.

[0003] However, in wall structures in which both the upper and lower edges of the wall are fixed to the upper and lower structures, large stresses are applied to the wall from the upper and lower structures when inter-story displacement (horizontal relative displacement between the upper and lower structures) occurs during earthquakes, making the wall susceptible to damage. Measures such as thickening the wall are necessary to mitigate such damage. A known wall structure that minimizes damage to wall panels during earthquakes is the rocking construction method, in which wall panels are attached to the upper and lower structures in a manner that allows them to swing. However, this method requires that the multiple wall panels that make up the wall be separated from each other. The rocking construction method cannot be used in the wall structures of refrigerated warehouses, which have walls made of multiple insulation panels airtightly joined together. Therefore, a new wall structure was needed that could minimize damage to walls formed by integrating multiple insulation panels while maintaining insulation and fire resistance, and that could mitigate damage from external forces acting during earthquakes and other events. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-142047 Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to provide a warehouse wall structure and a construction method thereof that can effectively prevent damage to a wall formed by integrating multiple insulation panels while ensuring thermal insulation and fire resistance due to external forces acting during an earthquake, etc. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the warehouse wall structure of the present invention has a plurality of insulating panels arranged in a row between structures spaced apart from one another above and below, and the opposing side ends of adjacent insulating panels are airtightly joined to form a wall, and is characterized in that at least one of the upper and lower edge portions of the wall is held so as to be slidable in the width direction of the wall relative to the corresponding structure.

[0007] The method for constructing a warehouse wall structure of the present invention involves arranging a plurality of insulating panels in a row between structures spaced apart from one another above and below, and airtightly joining the opposing side ends of adjacent insulating panels to form a wall, and is characterized in that at least one of the upper and lower edge portions of the wall is held in a state where it can slide and move in the width direction of the wall relative to the corresponding structure. [Effects of the Invention]

[0008] According to the present invention, at least one of the upper and lower edges of a wall structure made up of multiple airtightly joined insulation panels is configured to be slidable in the width direction of the wall structure relative to the corresponding structure, so that when inter-layer displacement occurs during an earthquake or other event, at least one of the upper and lower edges of the wall structure slides relative to the corresponding structure. This reduces the stress transmitted to the wall from the upper and lower structures due to inter-layer displacement during an earthquake or other event, thereby reducing the load on the wall. Therefore, a wall structure made up of multiple integrated insulation panels can be effectively prevented from being damaged by external forces acting during an earthquake or other event while maintaining insulation and fire resistance. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an explanatory diagram illustrating a front view of a wall structure of a warehouse according to the present invention. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 3] 2A and 2B are explanatory diagrams illustrating an example of a warehouse wall structure of the present invention in a vertical cross-sectional view, where (a) of FIG. 2 is a cross-sectional view taken along the line B-B of FIG. 1, and (b) of FIG. 2 is a vertical cross-sectional view illustrating an embodiment in which the wall body is held slidably relative to the structure below, and the lower end of the wall body is spaced apart from the structure below. [Figure 4] FIG. 2 is a cross-sectional view taken along the CC line in FIG. [Figure 5] 2 is an explanatory diagram illustrating a wall structure when a predetermined external force acts on the wall body of FIG. 1 in the width direction, as seen from the front. FIG. [Figure 6] 6A and 6B are explanatory diagrams illustrating another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view, where (a) of FIG. 6 is a vertical cross-sectional view illustrating an embodiment in which the wall body is held slidably relative to the structure above, and the upper end of the wall body is spaced apart from the upper structure, and (b) of FIG. 6 is a cross-sectional view illustrating an embodiment in which the wall body is held slidably relative to the structure above, and the lower end of the wall body is spaced apart from the structure below. [Figure 7] 10 is an explanatory diagram illustrating yet another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view. [Figure 8] 10 is an explanatory diagram illustrating yet another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view. [Figure 9] FIG. 9 is a cross-sectional view taken along the arrows D-D in FIG. 8. [Figure 10] 10 is an explanatory diagram illustrating yet another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view. [Figure 11] 10 is an explanatory diagram illustrating yet another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view. [Figure 12] FIG. 12 is a cross-sectional view taken along the arrows EE in FIG. [Figure 13] 10 is an explanatory diagram illustrating yet another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view. [Figure 14] 14A and 14B are explanatory diagrams illustrating another embodiment of the warehouse wall structure of the present invention in a vertical cross-sectional view, in which (a) of FIG. 14 is a vertical cross-sectional view illustrating an embodiment in which a pair of L-shaped angles are used as retaining members, (b) of FIG. 14 is a vertical cross-sectional view illustrating an embodiment in which a channel steel is used as retaining members, and (c) of FIG. 14 is a vertical cross-sectional view illustrating an embodiment in which a pair of square tubes are used as retaining members. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the warehouse wall structure and the method for constructing the same of the present invention will be described based on the embodiment shown in the drawings.

[0011] The present invention can be employed as an interior wall structure (partition wall structure) of a warehouse, or as an exterior wall structure of a warehouse. The present invention is particularly directed to the wall structure of a refrigerated warehouse, which requires higher insulation than the wall structures of general structures. A refrigerated warehouse is a warehouse that maintains the interior temperature at 10°C or below, and includes freezer warehouses. In addition to refrigerated warehouses, the present invention can also be applied to constant-temperature warehouses that maintain a constant temperature, and various other warehouses. In the following embodiments, the present invention will be described using an example in which it is applied to a refrigerated warehouse, but when it is applied to other warehouses, such as a constant-temperature warehouse, the structure and construction method will be substantially the same.

[0012] As illustrated in FIG. 1 , a warehouse wall structure 1 includes a plurality of insulating panels 3 (so-called insulating sandwich panels) arranged side by side between vertically spaced apart structural members 20 and 21. Opposing side edges of adjacent insulating panels 3 are airtightly joined to form a wall 2. A pair of structural members 22, 22 are erected on both sides of the width of the wall 2. In the following description, the structural member 20 located above the wall 2 is referred to as the upper structural member 20, the structural member 21 located below the wall 2 is referred to as the lower structural member 21, and the structural members 22 located on both sides of the wall 2 are referred to as the side structural members 22. In the case of a wall structure 1 installed on the first floor of a warehouse, the lower structural member 21 is a floor slab, a footing beam, or the like. In the case of a wall structure 1 installed on the second or higher floor of a warehouse, the lower structural member 21 is a floor slab, a girders, a joist, or the like. The upper structural member 20 is a floor slab, a ceiling slab, a girders, a joist, or the like. The side structural members 22 are columns, bearing walls, or the like.

[0013] In this embodiment, the upper structure 20, the lower structure 21, and the side structure 22 are each a reinforced concrete structure, but even if each of the structures 20, 21, and 22 is a steel frame structure or other structure, the wall structure 1 will have a substantially similar structure and construction method. The structures and shapes of the structures 20, 21, and 22 are not particularly limited. The X, Y, and Z directions in the drawing respectively indicate the width direction (horizontal direction), thickness direction (depth direction), and height direction (vertical direction) of the wall body 2. Note that the drawing has been partially exaggerated to clearly show the configuration of the wall structure 1, and some parts do not correspond to the actual dimensional ratios.

[0014] As shown in Figures 1, 2 and 3(a), the wall body 2 is configured by airtightly joining the opposing side edges of a plurality of heat insulating panels 3 arranged side by side. In other words, the wall body 2 is configured as a single body in which a plurality of heat insulating panels 3 are airtightly joined.

[0015] Each insulation panel 3 is a rectangular plate. Metal surface plates 5 are bonded to both surfaces of the insulation layer 4, forming an integrated structure in which the insulation layer 4 is sandwiched between the pair of metal surface plates 5. The entire area of ​​each of both surfaces of the insulation layer 4 is covered with the metal surface plates 4.

[0016] The insulating layer 4 can be formed of a known insulating material, such as isocyanurate foam, rock wool, or polyurethane foam. The metal surface plate 5 can be formed of various metal plates, such as Galvalume steel sheet (registered trademark). Instead of the metal surface plate 5, a non-metallic surface plate such as a resin surface plate can be provided on the insulating panel 3, but providing the insulating panel 3 with a metal surface plate 5 is advantageous for improving the thermal insulation and fire resistance of the wall structure 1 (wall body 2).

[0017] The thickness of the insulation layer 4 and the metal surface panel 5 can be determined appropriately depending on the insulation and fire resistance required for the wall structure 1. The thickness of the insulation layer 4 is preferably 50 mm to 300 mm, for example. If the thickness of the insulation layer 4 is less than 50 mm, it becomes difficult to ensure sufficient insulation and fire resistance. If it exceeds 300 mm, the insulation layer 4 will foam unevenly, making it difficult to manufacture. Furthermore, the weight of the insulation layer 4 will increase, which will reduce workability. The thickness of the metal surface panel 5 is preferably 0.3 mm to 2.0 mm, for example. If the thickness of the metal surface panel 5 is less than 0.3 mm, it becomes difficult to ensure sufficient strength. If it exceeds 2.0 mm, it will become heavy, which will reduce workability. The width and height of the insulation panel 3 and the number of insulation panels 3 constituting the wall body 2 can be determined appropriately depending on the distance between the structures 20, 21, and 22 surrounding the wall body 2. The width of one heat insulating panel 3 is, for example, 500 mm or more and 1200 mm or less, and the height is, for example, 2500 mm or more and 10000 mm or less.

[0018] More specifically, as shown in Figure 2, the insulation panel 3 of this embodiment has a convex fitting portion 4a at one side end of the insulation layer 4, and a concave fitting portion 4b at the other side end of the insulation layer 4. By fitting the opposing convex fitting portion 4a and concave fitting portion 4b of adjacent insulation panels 3 together, the opposing side ends of the insulation panels 3 are airtightly joined together. The shape and structure of the fitting portions 4a, 4b of the insulation panels 3 are not limited to this embodiment.

[0019] In this embodiment, joints are provided between the opposing side edges of adjacent insulation panels 3, and the joints are filled with a filler 6 which is then hardened. In this embodiment, the joints and the filler 6 which fills them are provided over the entire length in the height direction of the wall body 2 (insulation panel 3). As the filler 6, for example, a known sealant, caulking agent, mortar, etc. can be used.

[0020] The method of joining the heat insulating panels 3 together is not limited to this embodiment, and various other configurations are possible as long as the opposing side ends of the heat insulating panels 3 can be airtightly joined together. As will be exemplified in another embodiment later, the opposing side ends of the heat insulating panels 3 can also be joined together using, for example, fixing devices such as screws or a cover plate. For example, moisture-proof tape can be attached so as to straddle the opposing side ends of adjacent heat insulating panels 3.

[0021] In this wall structure 1, at least one of the upper end edge portion 2a or the lower end edge portion 2b of the wall body 2 is held so as to be slidable in the width direction (X direction) of the wall body 2 relative to the corresponding structural body 20, 21. In other words, this wall structure 1 is provided with a holding means 9 that holds at least one of the upper end edge portion 2a or the lower end edge portion 2b of the wall body 2 so as to be slidable in the width direction of the wall body 2 relative to the corresponding structural body 20, 21. More specifically, the holding means 9 has a pair of holding parts 11 that are arranged spaced apart in the thickness direction (Y direction) of the wall body 2. Both surfaces of at least one of the upper end edge portion 2a or the lower end edge portion 2b of the wall body 2 that is held so as to be slidable are sandwiched between the pair of holding parts 11 that are fixed to the corresponding structural body 20, 21, and the wall body 2 is configured to be slidable along the pair of holding parts 11 that extend in the width direction of the wall body 2. The upper edge 2a of the wall 2 described above indicates the upper end portion extending in the width direction of the wall 2, and the lower edge 2b of the wall 2 indicates the lower end portion extending in the width direction of the wall 2.

[0022] 1, 2, and 3(a) illustrate an example in which a holding means 9 is provided on the lower structure 21, and a lower edge portion 2b of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the lower structure 21. As illustrated in FIG. 3(a), the holding means 9 in this embodiment is composed of a pair of L-shaped angles 10a arranged on the lower structure 21, and a plurality of fasteners 12 that fasten each of the L-shaped angles 10a to the lower structure 21. The fasteners 12 are, for example, screws or bolts.

[0023] The pair of L-shaped angles 10a are arranged with a gap in the thickness direction of the wall 2. Each L-shaped angle 10a is arranged such that the surface of the first plate portion faces the surface of the lower edge portion 2b of the wall 2, and the surface of the second plate portion bent relative to the first plate portion faces the upper surface of the underlying structure 21. In this embodiment, each L-shaped angle 10a is arranged such that the second plate portion is located outside the wall 2. In this embodiment, the first plate portions of the pair of L-shaped angles 10a form a pair of holding portions 11.

[0024] The separation distance (gap) between the opposing end faces of the pair of holding portions 11 (first plate portions of the L-shaped angles 10a) in the thickness direction of the wall 2 is set to a distance that allows the wall 2 to slide in the width direction relative to the holding means 9 (L-shaped angles 10a). The aforementioned separation distance is set under conditions that the holding state of the wall 2 by the holding means 9 (state in which the wall 2 is supported) will not be released even if the wall 2 (insulating panel 3) thermally expands during a fire. Specifically, the aforementioned separation distance is set to the same dimension as the thickness dimension of the wall 2, for example. The aforementioned separation distance can also be set to be wider than the thickness dimension of the wall 2 by about 0.5 mm to 2 mm, for example.

[0025] As shown in FIG. 3(a), the height of the pair of retaining portions 11 (first plate portions of the L-shaped angle members 10a) is preferably set so that the vertical distance H1 of the retained portion of the wall 2 sandwiched between the pair of retaining portions 11 is, for example, 30 mm to 100 mm, more preferably 40 mm to 80 mm. Setting the vertical distance H1 to 30 mm or more is advantageous for maintaining the retention of the wall 2 by the retaining means 9 even in the event of thermal expansion of the wall 2 during a fire. Setting the vertical distance H1 to more than 100 mm makes the retaining means 9 unnecessarily large, which reduces workability.

[0026] In this embodiment, the upper edge portion 2a of the wall body 2 is fixed to the upper structure 21 by fastening means 13 provided on the upper structure 20. In this embodiment, a pair of fastening members 14 and a plurality of fastening fixtures 15 are used as the fastening means 13. For example, an L-shaped angle, a channel steel, or a square pipe is used as the fastening member 14. For example, a screw or a bolt is used as the fastening fixture 15. In this embodiment, an L-shaped angle is used as the fastening member 14, and screws are used as the fastening fixtures 15.

[0027] Each fastening member 14 (L-shaped angle) is arranged such that the surface of the first plate portion faces the surface of the upper edge portion 2a of the wall 2, and the surface of the second plate portion bent relative to the first plate portion faces the underside of the upper structure 20. In this embodiment, each fastening member 14 is arranged such that the second plate portion is located outside the wall 2. The first plate portion of each fastening member 14 is joined to the upper edge portion 2a of the wall 2 by a fastening tool 15, and the second plate portion of each fastening member 14 is joined to the upper structure 20 by another fastening tool 15.

[0028] In this embodiment, the lower end surface of the wall 2 is placed on the upper surface of the lower structure 21, and the upper end surface of the wall 2 is spaced apart from the lower surface of the upper structure 20. The vertical distance H2 of the gap G1 between the upper end surface of the wall 2 and the lower surface of the upper structure 20 is set, for example, to 5 mm or more and 100 mm or less, more preferably 10 mm or more and 50 mm or less. Setting the vertical distance H2 of the gap G1 to 5 mm or more, more preferably 10 mm or more, makes it easier to erect the wall 2 (insulation panel 3). Setting the vertical distance H2 of the gap G1 to more than 100 mm makes the fastening means 13 too large, which reduces workability.

[0029] 1 and 4, the wall structure 1 of this embodiment includes a connecting means 16 that connects the side portions 2c of the wall body 2 to the lateral structures 22 while the side ends of the wall body 2 are spaced apart from the lateral structures 22 facing the side ends. In this embodiment, gaps G2 are provided between the side ends on both sides of the wall body 2 and the lateral structures 22 facing the respective side ends, and the connecting means 16 are provided on the side portions 2c on both sides of the wall body 2. Furthermore, in this embodiment, buffer materials 19 are provided in the gaps G2.

[0030] Before a predetermined external force due to an earthquake or the like acts on the wall 2, the side portion 2c of the wall 2 is restrained from the lateral structure 22 by the connecting means 16. That is, under normal circumstances, the wall 2 is fixed to the lateral structure 22 by the connecting means 16. When a predetermined external force acts on the wall 2 in its width direction, such as during an earthquake, the restraint of the side portion 2c of the wall 2 from the lateral structure 22 by the connecting means 16 is released. The above-mentioned predetermined external force conditions under which the restraint of the wall 2 by the connecting means 16 is released can be determined appropriately depending on the earthquake-resistant structure of the warehouse, the durability (strength) of the wall 2, and the like. The configuration is such that the restraint of the wall 2 by the connecting means 16 is released before a predetermined external force exceeding the durability of the wall 2 acts on the wall 2.

[0031] In this embodiment, the connecting means 16 includes a pair of connecting members 17 and a plurality of fasteners 18. The connecting members 17 are, for example, thin, L-shaped plate-like members. The fasteners 18 are, for example, screws or bolts. In this embodiment, the surface of the first plate portion of each connecting member 17 (the L-shaped plate-like member) faces the surface of the side end portion of the wall 2, and the surface of the second plate portion bent relative to the first plate portion faces the surface of the lateral structure 22. Each connecting member 17 is disposed with the second plate portion facing outward from the wall 2. The first plate portion of each connecting member 17 is joined to the side portion 2c of the wall 2 by fasteners 18, and the second plate portion of each connecting member 17 is joined to the lateral structure 22 by another fastener 18.

[0032] In this embodiment, when a predetermined external force acts on the wall 2 in its width direction, such as during an earthquake, the connecting members 17 break, thereby releasing the restraint of the wall 2 by the connecting means 16. As in this embodiment, the connecting members 17 that break when a predetermined external force acts on the wall 2 can be made of a thin steel plate or aluminum plate with a thickness of, for example, 0.3 mm to 0.6 mm. The connecting means 16 can also be configured, for example, so that when a predetermined external force acts on the wall 2, the fasteners 18 come off at least one of the wall 2 or the lateral structure 22, or the fasteners 18 are damaged, thereby releasing the restraint of the wall 2 by the connecting means 16.

[0033] In other words, the strength (transmission force) of the connecting means 16 (connecting member 17, fastener 18) is set lower than the strength of the wall body 2, and the connecting means 16 is broken and the restraint of the wall body 2 by the connecting means 16 is released before the stress in the width direction (X direction) acting on the wall body 2 from the structures 20, 21, 22 during an earthquake or the like increases to a level that damages the wall body 2.

[0034] For example, a flexible material is used for the buffer material 19. It is preferable to use a material with heat insulating and fire-resistant properties, such as rock wool or glass wool, for the buffer material 19. The buffer material 19 can be provided arbitrarily as needed. For example, the wall structure 1 can be configured such that the gap G2 between the side end of the wall body 2 and the lateral structure 22 is hollow.

[0035] As shown in FIG. 1 , during normal times when no earthquake of a predetermined seismic intensity or greater has occurred, the space enclosed by the four structural elements 20, 21, and 22 is sealed by the wall 2, retaining means 9 (L-shaped angle 10a), fastening means 13 (fastening member 14), and connecting means 16 (connecting member 17) that constitute the wall structure 1. The retaining means 9 (L-shaped angle 10a) extends in the width direction of the wall 2 from the end face of the structural element 22 on one side to the end face of the structural element 22 on the other side. The fastening means 13 (fastening member 14) extends in the width direction of the wall 2 from one side end of the wall 2 to the other side end. The fastening means 13 (fastening member 14) preferably extends from the end face of the structural element 22 on one side to the end face of the structural element 22 on the other side. The connecting means 16 (connecting member 17) extends vertically from the upper end of the wall 2 to the lower end of the wall 2. The connecting means 16 (connecting member 17) preferably extends in the vertical direction from the lower surface of the upper structure 20 to the upper surface of the lower structure 21.

[0036] As illustrated in FIG. 1 , in this embodiment, under normal circumstances, the upper edge portion 2 a of the wall body 2 is fixed to the upper structure 20 by the fastening means 13, and the side portion 2 c of the wall body 2 is constrained to the lateral structure 22 by the connecting means 16. As illustrated in FIG. 5 , in this wall structure 1, when an earthquake of a predetermined seismic intensity or greater occurs and a predetermined external force acts on the wall body 2 in its width direction due to inter-story displacement or the like, the constraining of the side portion 2 c of the wall body 2 to the lateral structure 22 by the connecting means 16 is released. In this embodiment, when the predetermined external force acts on the wall body 2, the connecting member 17 breaks, and the constraining of the wall body 2 by the connecting means 16 is released. Then, when inter-story displacement occurs, the wall body 2 moves in the width direction (X direction) of the wall 2, following the upper structure 20 to which it is fixed. The state in which the lower edge 2b of the wall body 2 is held by the holding means 9 is maintained, but the lower edge 2b of the wall body 2 does not follow the structure 21 below, but slides in the width direction of the wall body 2 relative to the structure 21 below. In other words, during an earthquake, the wall body 2 moves left and right following the structure 20 above to which it is fixed.

[0037] Next, an example of a work procedure for constructing this warehouse wall structure 1 will be described. In this embodiment, a case where the lower structure 21 is provided with the holding means 9 and the upper structure 20 is provided with the fastening means 13 will be illustrated.

[0038] As illustrated in Figures 1, 2 and 3(a), a pair of L-shaped angles 10a constituting the holding means 9 are placed on the lower structure 21, and each of the L-shaped angles 10a is fixed to the lower structure 21 with a fastener 12. Next, the lower edge of one insulation panel 3 is inserted between the pair of holding parts 11 (first plate parts of the L-shaped angles 10a), and the insulation panel 3 is placed upright on the lower structure 21. The lower edge of the insulation panel 3 is held (supported) by the pair of holding parts 11.

[0039] Next, another insulating panel 3 is similarly erected next to the insulating panel 3 erected on the lower structure 21. Then, the adjacent, opposing side edges of the insulating panels 3 arranged side by side are airtightly joined together. In this embodiment, the opposing convex fitting portions 4a and concave fitting portions 4b of adjacent insulating panels 3 are fitted together. Then, a filler 6 is filled into the joints between the opposing side edges of adjacent insulating panels 3 and allowed to solidify. By repeating this process, a wall 2 is formed in which multiple insulating panels 3 are integrated. In this embodiment, the lower end surface of the wall 2 is placed on the upper surface of the lower structure 21, leaving a gap G1 between the upper end surface of the wall 2 and the underside of the upper structure 20. In addition, a gap G2 is left between the side edge of the wall 2 and the lateral structure 22 facing that side edge.

[0040] Next, the upper edge portion 2a of the wall body 2 is fixed to the upper structure 20 by the fastening means 13. In this embodiment, the upper edge portion 2a of the wall body 2 is sandwiched between a pair of fastening members 14. Then, a first plate portion of each fastening member 14 is joined to the upper edge portion 2a of the wall body 2 by a fastening tool 15, and a second plate portion of each fastening member 14 is joined to the upper structure 20 by another fastening tool 15.

[0041] Next, as illustrated in FIG. 4 , buffer material 19 is filled in the gap G2 between the side end of the wall 2 and the lateral structure 22 facing that side end. Then, with the side end of the wall 2 and the end face of the lateral structure 22 spaced apart, the side portion 2c of the wall 2 is connected to the lateral structure 22 by the connecting means 16. In this embodiment, a pair of connecting members 17 sandwich both surfaces of the side portion 2c of the wall 2. Then, the first plate portion of each connecting member 17 is joined to the side portion 2c of the wall 2 by fasteners 18, and the second plate portion of each connecting member 17 is joined to the lateral structure 22 by other fasteners 18. The construction of the wall structure 1 is completed by the above operations.

[0042] When the wall 2 is formed with the holding means 9 installed first and the insulating panels 3 slidably held by the holding means 9, as in the procedure described above, it is preferable to temporarily fasten the insulating panels 3 located at the ends to the lower structure 21 using stoppers until the wall 2 is fixed to the upper structure 20 by the fastening means 13. Then, after the wall 2 is fixed to the upper structure 20 by the fastening means 13, it is preferable to remove the stoppers. Using stoppers to temporarily fasten the insulating panels 3 makes it easier to join the insulating panels 3 together and to fix the wall 2 by the fastening means 13 more stable. Note that stoppers can be used arbitrarily as needed.

[0043] The above-described procedure is an example, and the order of installing the holding means 9, fastening means 13, and connecting means 16 can be changed as needed. Specifically, for example, a pair of fastening members 14 constituting the fastening means 13 is fixed to the upper structure 20 with fasteners 15. Then, the upper edge portion of the insulating panel 3 is inserted between the pair of fastening members 14, and the insulating panel 3 is placed upright on the lower structure 21. Another insulating panel 3 is similarly placed upright next to the insulating panel 3 placed upright on the lower structure 21. Then, the adjacent, opposing side edges of the insulating panels 3 arranged side by side are airtightly joined to form the wall 2. Next, the upper edge portion 2a of the wall 2 is joined to the fastening members 14 with the fasteners 15. Thereafter, the holding means 9 is provided on the lower structure 21, and the lower edge portion 2b of the wall 2 is slidably held by the holding means 9. Finally, the side portion 2c of the wall body 2 is fixed to the lateral structure 22 by the connecting means 16. Even when such a work procedure is used, the wall structure 1 can be constructed in the same manner.

[0044] As described above, in this wall structure 1 and its construction method, at least one of the upper edge 2a or the lower edge 2b of the wall 2, which is configured by airtightly joining multiple insulation panels 3, is held in a state where it can slide in the width direction of the wall 2 relative to the corresponding structures 20, 21. This allows at least one of the upper edge 2a or the lower edge 2b of the wall 2 to slide relative to the corresponding structures 20, 21 when inter-story displacement occurs during an earthquake or the like. This reduces the stress transmitted from the upper and lower structures 20, 21 to the wall 2 due to inter-story displacement during an earthquake or the like, thereby reducing the load on the wall 2. Therefore, the wall 2, which is formed by integrating multiple insulation panels 3, can be effectively prevented from being damaged by external forces acting during an earthquake or the like while maintaining thermal insulation and fire resistance.

[0045] This wall structure 1 can reduce the load on the wall 2 and set the required strength of the wall 2 lower than in conventional wall structures, which is also advantageous for reducing the weight of the wall 2. By suppressing damage to the wall 2 during an earthquake, the time and cost required to restore the wall structure 1 after an earthquake can be significantly reduced. Furthermore, by suppressing damage to the wall 2 during an earthquake, the fire resistance of the wall 2 can be maintained even in the event of a fire caused by an earthquake, which is advantageous for suppressing the spread of fire.

[0046] Conventionally, it has been thought that in order to suppress the bulging deformation of the wall 2 (insulating panel 3) during a fire and prevent the wall 2 from being damaged or collapsing, it is necessary to fix both the upper edge 2a and the lower edge 2b of the wall 2 to the upper and lower structures 20, 21. However, the inventors have created a test model of a wall structure 1 having this retaining means 9 and conducted fire resistance tests, and have confirmed that this wall structure 1 can prevent the wall 2 from being damaged or collapsing during a fire.

[0047] Providing a connecting means 16 that connects the side portion 2c of the wall body 2 to the side structure 22 while the side end of the wall body 2 and the lateral structure 22 facing the side end are spaced apart is advantageous in ensuring high thermal insulation and fire resistance of the wall structure 1 by closing the gap G2 between the side end of the wall body 2 and the lateral structure 22 with the connecting means 16 under normal conditions. When a predetermined external force acts on the wall body 2 in its width direction, such as during an earthquake of a predetermined seismic intensity or higher, the constraint of the side portion 2c of the wall body 2 relative to the lateral structure 22 by the connecting means 16 is released, and at least one of the upper edge 2a or the lower edge 2b of the wall body 2 becomes slidable relative to the corresponding structure 20, 21, effectively preventing damage to the wall body 2 during an earthquake. During restoration work after an earthquake, the wall structure 1 can be easily and quickly repaired by simply connecting the side portion 2c of the wall body 2 to the lateral structure 22 with the new connecting means 16. This is also advantageous in reducing the labor and costs required for recovery work.

[0048] The distance (size of gap G2) in the X direction between the side end of the wall 2 and the lateral structure 22 under normal conditions is preferably set to, for example, 10 mm or more and 300 mm or less, more preferably 20 mm or more and 100 mm or less. Setting the distance to 10 mm or more, preferably 20 mm or more, reduces the risk of collision between the side end of the wall 2 and the lateral structure 22 when the wall 2 slides widthwise relative to the corresponding structure 20, 21. Furthermore, setting the distance to 300 mm or less, preferably 100 mm or less, ensures that even if the connecting means 16 is damaged during an earthquake of a predetermined seismic intensity or greater, the distance between the side end of the wall 2 and the lateral structure 22 is relatively small, which is advantageous for suppressing the spread of a fire caused by an earthquake. Furthermore, although the connecting means 16 has inferior insulating performance compared to the wall 2 (insulating panel 3), reducing the width of the connecting means 16 is advantageous for improving the insulating performance of the wall structure 1.

[0049] When buffer material 19 is interposed between the side end of wall body 2 and the lateral structure 22 facing that side end, gap G2 between the side end of wall body 2 and the lateral structure 22 is blocked by buffer material 19 under normal conditions, which is advantageous for improving the thermal insulation and fire resistance of wall structure 1. When wall body 2 slides in the width direction relative to the corresponding structures 20, 21, buffer material 19 expands and contracts, so the sliding movement of wall body 2 is not hindered. Furthermore, buffer material 19 more reliably prevents the side end of wall body 2 from colliding with lateral structure 22 while wall body 2 is sliding, and also absorbs the impact, so providing buffer material 19 is more advantageous for preventing damage to wall body 2 during earthquakes and the like.

[0050] 5, when the wall body 2 slides in the width direction relative to the corresponding structures 20 and 21, if the gap G2 between the side end of the wall body 2 and the lateral structure 22 facing that side end is kept closed by the buffer material 19, this is more advantageous for maintaining high thermal insulation and fire resistance of the wall structure 1. It is also more advantageous for suppressing the spread of fire in the event of an earthquake. This wall structure 1 can be configured with only either the connecting means 16 or the buffer material 19, for example.

[0051] Although not provided in this embodiment, a friction-reducing material for reducing friction between the retaining portion 11 and the wall 2 may be provided on at least one of the surfaces of the wall 2 facing the retaining portion 11 or the surfaces of the retaining portion 11 facing the wall 2. Furthermore, a friction-reducing material for reducing friction between the surfaces of the structures 20 and 21 and the end surfaces of the wall 2 may be provided on the surfaces of the corresponding structures 20 and 21 along which the wall 2 can slide or on at least one of the end surfaces (upper end surface or lower end surface) of the wall 2 facing the surfaces of the structures 20 and 21. Providing a friction-reducing material makes it easier for at least one of the upper end edge portion 2a or the lower end edge portion 2b of the wall 2 to slide relative to the corresponding structures 20 and 21, which is more effective in preventing damage to the wall 2 during earthquakes and other events. Examples of friction-reducing materials include fluororesins.

[0052] This wall structure 1 can also be configured, as in the embodiment illustrated in FIG. 3(b), to have a gap G1 between the lower end surface of the wall body 2, which is slidably held relative to the lower structure 21, and the upper surface of the lower structure 21. Similar to the wall structure 1 of the embodiment illustrated in FIG. 3(a), the wall structure 1 of the embodiment illustrated in FIG. 3(b) has a retaining means 9 provided on the lower structure 21, and holds the lower end edge portion 2b of the wall body 2 slidably in the width direction of the wall body 2 relative to the lower structure 21. Then, with the lower end surface of the wall body 2 positioned above the upper surface of the lower structure 21, the upper end edge portion 2a of the wall body 2 is fixed to the upper structure 20 by fastening means 13 provided on the structure 20 above the wall body 2. The wall structure 1 of the embodiment illustrated in FIG. 3(b) can be constructed by the same construction method as the wall structure 1 of the embodiment illustrated in FIG. 3(a) described above, and can achieve the same effects.

[0053] In this wall structure 1, as in the embodiment illustrated in FIG. 6(a) and the embodiment illustrated in FIG. 6(b), a holding means 9 is provided on the upper structure 20, and the upper end edge portion 2a of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the upper structure 20. In the embodiment illustrated in FIG. 6(a) and the embodiment illustrated in FIG. 6(b), the lower end edge portion 2b of the wall body 2 is fixed to the lower structure 21 by fastening means 13 provided on the lower structure 21. In the embodiment illustrated in FIG. 6(a), a gap G1 is provided between the upper end surface of the wall body 2, which is held slidable relative to the upper structure 20, and the lower surface of the upper structure 20. In the embodiment illustrated in FIG. 6(b), a gap G1 is provided between the lower end surface of the wall 2, which is fixed to the lower structure 21, and the upper surface of the lower structure 21.

[0054] 6(a) and 6(b), when inter-story displacement occurs due to an earthquake or the like, the wall 2 moves in the width direction of the wall 2, following the fixed lower structure 21. The upper end edge 2a of the wall 2 is maintained in a held state by the holding means 9 provided on the upper structure 20, but the upper end edge 2a of the wall 2 does not follow the upper structure 20, but slides in the width direction of the wall 2 relative to the upper structure 20.

[0055] The wall structure 1 of the embodiment illustrated in Fig. 6(a) and the wall structure 1 of the embodiment illustrated in Fig. 6(b) can be constructed by substantially the same construction method as the wall structure 1 of the embodiment illustrated in Fig. 3(a) described above, and can achieve similar effects. In the work of constructing the wall structure 1 of the embodiment illustrated in Fig. 6(a), a holding means 9 is provided on the upper structure 20, and a fastening means 13 is provided on the lower structure 21.

[0056] 7, this wall structure 1 can also be configured such that holding means 9 are provided on each of the upper structure 20 and the lower structure 21, and the upper end edge portion 2a of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the upper structure 20, and the lower end edge portion 2b of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the lower structure 21. In the embodiment illustrated in FIG. 7, a gap G1 is provided between the upper end surface of the wall 2, which is held so as to be slidable relative to the upper structure 20, and the lower surface of the upper structure 20.

[0057] 7, when inter-story displacement occurs due to an earthquake or the like, the upper end edge portion 2a of the wall body 2 remains held by the holding means 9 provided on the upper structure 20, but the upper end edge portion 2a of the wall body 2 does not follow the upper structure 20 but slides in the width direction of the wall body 2 relative to the upper structure 20. Also, the lower end edge portion 2b of the wall body 2 remains held by the holding means 9 provided on the lower structure 21, but the lower end edge portion 2b of the wall body 2 does not follow the lower structure 21 but slides in the width direction of the wall body 2 relative to the lower structure 21.

[0058] The wall structure 1 of the embodiment illustrated in Fig. 7 can be constructed by substantially the same construction method as the wall structure 1 of the embodiment illustrated in Fig. 3(a) described above, and can achieve similar effects. In the work of constructing the wall structure 1 of the embodiment illustrated in Fig. 7, holding means 9 are provided on both the upper structure 20 and the lower structure 21.

[0059] As in the wall structure 1 of each embodiment illustrated in Figures 3(a) and (b) and the wall structure 1 of each embodiment illustrated in Figures 6(a) and (b), if either the upper edge portion 2a or the lower edge portion 2b of the wall body 2 is fixed to the corresponding structure 20, 21, this is advantageous in more reliably preventing the wall body 2 from being damaged or collapsing when the wall body 2 thermally expands during a fire.

[0060] In the embodiments illustrated in FIG. 3(b), FIG. 6(a), and FIG. 7, a gap G1 is provided between at least one end face of the upper edge portion 2a or the lower edge portion 2b of the wall 2, which is slidably supported relative to the corresponding structures 20 and 21, and the surface of the corresponding structure 20 or 21. This configuration further reduces the risk of vertical compression of the wall 2 even when the upper structure 20 or the lower structure 21 deflects during an earthquake or other event. This is therefore more advantageous for reducing the risk of damage to the wall 2 during an earthquake. Furthermore, even when the wall 2 thermally expands during a fire, the vertical thermal expansion of the wall 2 can be absorbed by the gap G1. This is therefore advantageous for suppressing bulging deformation of the wall 2 during a fire and for reducing the risk of damage or collapse of the wall 2 during a fire. Setting the vertical distance H2 of the gap G1 to, for example, 10 mm or more and 50 mm or less, more preferably 20 mm or more and 40 mm or less, is advantageous in enhancing the aforementioned effect without making the holding means 9 unnecessarily large.

[0061] A wall structure 1 in which the lower edge 2b of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the underlying structural body 21 can also be configured as in the embodiment illustrated in Figures 8 and 9. As illustrated in Figures 8 and 9, in this embodiment, insulating building materials 23 are laid on the underlying structural body 21, and holding concrete 24 is poured on the insulating building materials 23. This embodiment illustrates a case in which opposing side ends of adjacent insulating panels 3 are joined together using a plurality of fasteners 7.

[0062] In this embodiment, the retaining means 9 includes a pair of L-shaped angles 10a and a pair of insulating members 10d. The pair of L-shaped angles 10a is fixed to the lower structure 21 with fasteners 12, and an insulating member 10d is attached to the top of each L-shaped angle 10a. The surface of the first plate portion of each L-shaped angle 10a faces the surface of the lower edge 2b of the wall 2, forming a retaining portion 11 interposed between the surface of the lower edge 2b of the wall 2 and the insulating building material 23. The surface of each insulating member 10d faces the surface of the lower edge 2b of the wall 2, forming a retaining portion 11 interposed between the surface of the lower edge 2b of the wall 2 and the holding concrete 24. In this embodiment, the pair of L-shaped angles 10a and insulating members 10d that form the pair of retaining portions 11 retain the lower edge 2b of the wall 2. The wall body 2 is configured to be slidable in the width direction of the wall body 2 along the pair of L-shaped angles 10a and the insulating member 10d.

[0063] The insulating member 10d may be, for example, a plate-shaped member or a sheet-shaped member. The insulating member 10d may be formed, for example, from polystyrene foam (extruded polystyrene foam) or polyethylene foam. A known insulating material may be used for the insulating building material 23, such as extruded polystyrene foam. The thickness of the insulating building material 23 is, for example, 30 mm or more and 400 mm or less. Providing the insulating building material 23 reduces thermal conduction between the foundation and the first floor and between the lower and upper floors, which is advantageous for further improving insulation. The entire upper surface of the insulating building material 23 is covered with a holding concrete 24. The thickness of the holding concrete 24 is, for example, 50 mm or more and 300 mm or less. Providing the holding concrete 24 protects the insulating building material 23.

[0064] The wall structure 1 of the embodiment illustrated in FIGS. 8 and 9 can be constructed using a construction method generally similar to that of the wall structure 1 of the embodiment illustrated in FIG. 3(a) described above, and can achieve similar effects. In constructing the wall structure 1 of the embodiment illustrated in FIGS. 8 and 9, a pair of L-shaped angles 10a are fixed to the lower structure 21, and then the lower edge 2b of the wall 2 (insulating panel 3) is inserted between the pair of L-shaped angles 10a to erect the wall 2. Next, the upper edge 2a of the wall 2 is fixed to the upper structure 20 using fastening means 13. Alternatively, the upper edge 2a of the wall 2 is held slidably relative to the upper structure 20 using holding means 9. Next, insulating building materials 23 are laid on the lower structure 21. After that, insulating members 10d are attached to the upper edge portions of the L-shaped angles 10a, so that the insulating members 10d abut against the surfaces of the lower edge portions 2b of the wall 2. Next, concrete is poured on top of the insulating building material 23 and allowed to harden to form the retaining concrete 24. Since the insulating member 10d is attached to the end surface of the hardened retaining concrete 24, the insulating member 10d can also be made of a thin plate-like member or sheet-like member that does not stand on its own.

[0065] 8 and 9, insulating members 10d are provided on the upper edge portions of a pair of L-shaped angles 10a, but as in the embodiment shown in Fig. 10, the first plate portions of the pair of L-shaped angles 10a can also be configured to extend up to the height of the upper surface of the retaining concrete 24. In this case, too, the first plate portions of the pair of L-shaped angles 10a are interposed as retaining portions 11 between the surface of the lower edge portion 2b of the wall 2 and the retaining concrete 24, so that the pair of L-shaped angles 10a hold the lower edge portion 2b of the wall 2, allowing the wall 2 to slide along the pair of L-shaped angles 10a.

[0066] The wall structure 1 of the embodiment illustrated in Fig. 10 can be constructed by substantially the same construction method as the wall structure 1 of the embodiment illustrated in Fig. 8 and Fig. 9, and can achieve similar effects. In the work of constructing the wall structure 1 of the embodiment illustrated in Fig. 10, the work of attaching the insulating member 10d is not required.

[0067] 10, extending the first plate portions of the pair of L-shaped angles 10a up to the height of the upper surface of the retaining concrete 24 has the advantage of making the retaining means 9 extremely simple, but if the insulating building material 23 or the retaining concrete 24 is made thick, the size of the L-shaped angles 10a will increase. In such a case, as in the embodiment shown in Figures 8 and 9, by attaching insulating members 10d to the pair of L-shaped angles 10a, the retaining means 9 can be simplified without using large L-shaped angles 10a.

[0068] The wall structure 1 in which the lower edge 2b of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the lower structural body 21 can also be configured as in the embodiment illustrated in Figures 11 and 12. As illustrated in Figures 11 and 12, in this embodiment, a waist wall 25 is provided on the lower structural body 21. In this embodiment, the opposing side edges of adjacent insulation panels 3 are joined together using a covering plate 8 and a plurality of fasteners 7.

[0069] In this embodiment, the retaining means 9 includes a pair of L-shaped angles 10a and a pair of insulating members 10d. The pair of L-shaped angles 10a is fixed to the lower structure 21 with fasteners 12, and an insulating member 10d is attached to the top of each L-shaped angle 10a. The surface of the first plate portion of each L-shaped angle 10a faces the surface of the lower edge portion 2b of the wall 2, and the first plate portion of the L-shaped angle 10a constitutes a retaining portion 11 interposed between the surface of the lower edge portion 2b of the wall 2 and the waist wall 25. The surface of each insulating member 10d faces the surface of the lower edge portion 2b of the wall 2, and the insulating member 10d also constitutes a retaining portion 11 interposed between the surface of the lower edge portion 2b of the wall 2 and the waist wall 25. In this embodiment, the lower edge portion 2b of the wall body 2 is held by a pair of L-shaped angles 10a and insulating members 10d that constitute a pair of holding portions 11, and the wall body 2 is configured to be able to slide in the width direction of the wall body 2 along the pair of L-shaped angles 10a and insulating members 10d.

[0070] The wall structure 1 of the embodiment illustrated in FIGS. 11 and 12 can be constructed using a construction method similar to that of the wall structure 1 of the embodiment illustrated in FIGS. 8 and 9 described above, and can achieve similar effects. In constructing the wall structure 1 of the embodiment illustrated in FIGS. 11 and 12, a pair of L-shaped angles 10a are fixed to the lower structural body 21, and the lower edge 2b of the wall 2 is inserted between the pair of L-shaped angles 10a to erect the wall 2. Next, insulating members 10d are attached to the upper edges of each L-shaped angle 10a, so that the insulating members 10d abut against the surface of the lower edge 2b of the wall 2. If the spandrel wall 25 is to be formed of concrete, a formwork for the spandrel wall 25 is installed, and concrete is poured into the formwork and allowed to solidify to form the spandrel wall 25. Because the insulating members 10d are attached to the end surfaces of the solidified spandrel wall 25, the insulating members 10d can also be made of thin, non-self-supporting plate-like or sheet-like members.

[0071] 11 and 12 show an example in which insulating members 10d are provided on the top of a pair of L-shaped angles 10a, but it is also possible to configure the first plate portions of the pair of L-shaped angles 10a to extend up to the height of the upper surface of the waist wall 25. When the waist wall 25 is provided as in this embodiment, the retaining means 9 is protected by the waist wall 25 and is stably supported by the waist wall 25, further reducing the risk of the retaining means 9 being deformed or damaged during an earthquake.

[0072] The wall structure 1 in which the upper edge portion 2a of the wall body 2 is held so as to be slidable in the width direction of the wall body 2 relative to the upper structure 20 can also be configured as in the embodiment shown in Fig. 13. As shown in Fig. 13, in this embodiment, a holding means 9 is provided on the upper structure 20, and a sprayed insulation layer 26 is provided to cover the underside of the upper structure 20, the holding means 9, and the upper edge portion 2a of the wall body 2.

[0073] In this embodiment, the upper structure 20 is provided with a pair of L-shaped angles 10a as holding means 9 for slidably holding the upper edge portion 2a of the wall body 2. A sprayed insulation layer 26 is formed so as to cover the underside of the upper structure 20, the outer surfaces of the holding means 9 (the pair of L-shaped angles 10a), and the surface of the upper edge portion 2a of the wall body 2. The sprayed insulation layer 26 is formed, for example, from a known foamed resin such as foamed urethane resin or foamed polystyrene.

[0074] The wall structure 1 of this embodiment can be constructed by constructing the wall structure 1 of the embodiment illustrated in Fig. 6(a) described above, and then spraying foamed resin onto the outer surfaces of the upper structural body 20 and the retaining means 9 (the pair of L-shaped angles 10a) and onto the surface of the upper edge portion 2a of the wall body 2 to form a sprayed insulation layer 26. The thickness of the sprayed insulation layer 26 is set to, for example, 20 mm or more and 100 mm or less.

[0075] The wall structure 1 and its construction method of the embodiment illustrated in Figure 13 can also achieve the same effects as the wall structure 1 and its construction method of the embodiment illustrated in Figure 6(a) described above. Providing a sprayed insulation layer 26, as in the embodiment illustrated in Figure 13, is advantageous in reducing heat conduction between the lower and upper floors and further improving insulation.

[0076] 13, when the upper edge 2a of the wall 2 slides relative to the upper structure 20 during an earthquake of a predetermined seismic intensity or greater, the portion of the sprayed insulation layer 26 attached to the upper edge 2a of the wall 2 collapses, allowing the upper edge 2a of the wall 2 to smoothly slide relative to the upper structure 20. In restoration work after an earthquake, the wall structure 1 can be easily restored in a short time simply by spraying foamed resin onto the upper edge 2a of the wall 2 and repairing the sprayed insulation layer 26, so the labor and cost required for restoration work of the wall structure 1 is relatively small even when the sprayed insulation layer 26 is provided.

[0077] As in the embodiments illustrated in (a) to (c) of Fig. 14, the holding means 9 constituting this wall structure 1 is not limited to the L-shaped angle 10a, but can also be composed of other members.

[0078] In the embodiment illustrated in FIG. 14(a), the retaining means 9 is configured with a pair of L-shaped angles 10a, and each L-shaped angle 10a is arranged so that its second plate portion is located inside the wall body 2. In this embodiment, a thermal insulating material 27 is provided in the gap G1 between the upper end surface of the wall body 2 and the lower surface of the upper structure 20. For the thermal insulating material 27, a material having thermal insulating and fire-resistant properties, such as rock wool or glass wool, may be used. In this way, providing the thermal insulating material 27 in the gap G1 between the upper end surface of the wall body 2 and the lower surface of the upper structure 20, and in the gap G1 between the lower end surface of the wall body 2 and the upper surface of the lower structure 20, can further improve the thermal insulating and fire-resistant properties of the wall structure 1.

[0079] In the embodiment illustrated in FIG. 14(b), the holding means 9 is formed of a channel steel 10b (U-shaped steel material). The channel steel 10b is arranged such that each surface of a pair of first plate portions faces the surface of the upper edge portion 2a of the wall body 2, and the surface of a second plate portion bent relative to the pair of first plate portions faces the underside of the upper structure 21. The channel steel 10b is fixed to the upper structure 21 using a fastener 12. In this embodiment, the pair of first plate portions of the channel steel 10b form a pair of holding portions 11.

[0080] In the embodiment illustrated in Figure 14(c), the holding means 9 is composed of a pair of square tubes 10c. In this embodiment, each side of the pair of square tubes 10c faces the surface of the upper edge portion 2a of the wall body 2, and each upper surface of the square tubes 10c faces the lower surface of the upper structure 21. Then, each square tube 10c is fixed to the upper structure 21 using a fixing device 12. In this embodiment, the pair of square tubes 10c constitutes a pair of holding portions 11.

[0081] The wall structure 1 of each embodiment illustrated in (a) to (c) of Figure 14 can be constructed using a construction method generally similar to that of the wall structure 1 of the embodiment illustrated in (a) of Figure 3 described above, and can achieve similar effects.

[0082] In this way, the holding means 9 only needs to be configured to hold at least one of the upper edge portion 2a or the lower edge portion 2b of the wall body 2 so that it can slide in the width direction of the wall body 2 relative to the corresponding structure 20, 21, and the components that make up the holding means 9 and the arrangement of the components that make up the holding means 9 can be configured in various other ways.

[0083] The configurations of the respective embodiments described above can be replaced or combined as appropriate. For example, the retaining means 9 of the wall structure 1 of the embodiments illustrated other than that of FIG. 14(b) can be replaced with a channel steel 10b. Furthermore, for example, a heat insulating material 27 can be provided in the gap G1 of the wall structure 1 of the embodiments illustrated other than that of FIG. 14(a). For example, a configuration can be adopted in which a gap G1 is provided both between the upper end surface of the wall body 2 and the lower surface of the upper structural body 20, and between the lower end surface of the wall body 2 and the upper surface of the lower structural body 21.

[0084] If the upper structure 20 and the lower structure 21 are steel structures (section steel), for example, components such as the L-shaped angle 10a that constitutes the holding means 9 can be joined to the upper structure 20 and the lower structure 21 by welding or the like. [Explanation of symbols]

[0085] 1 Wall structure 2 wall 2a Top edge 2b Bottom edge 2c Side 3. Insulation panels 4. Insulation layer 4a, 4b Fitting part 5 Metal surface plate 6 Filling material 7 Fixtures 8 Covering plate 9 Retention means 10a L-shaped angle 10b channel steel 10c square tube 10d Insulating material 11 Holding part 12 Fixtures 13 Fastening means 14 Fastening member 15 Fasteners 16 Connection means 17 Connecting member 18 Fasteners 19 Cushioning material 20 (Upper) Structure 21 (lower) structure 22 (lateral) structure 23 Heat-insulating building materials 24 Reinforced concrete 25 Waist wall 26 Sprayed insulation layer 27 Insulation G1, G2 gap

Claims

1. A warehouse wall structure has a plurality of insulation panels arranged side by side between vertically spaced apart structures, and the opposing side edges of adjacent insulation panels are airtightly joined to form a wall body. A warehouse wall structure characterized in that at least one of the upper and lower edge portions of the wall body is held so as to be slidable in the width direction of the wall body relative to the corresponding structure.

2. The warehouse wall structure described in claim 1, wherein both surfaces of at least one of the upper and lower edge portions of the wall body that is held in a slidable manner are sandwiched between a pair of holding portions that are fixed to the corresponding structure and spaced apart in the thickness direction of the wall body, and the wall body is configured to be slidable along the pair of holding portions that extend in the width direction.

3. A warehouse wall structure as described in claim 1 or 2, which is configured to include a connecting means for connecting the side of the wall to the lateral structure while the side end of the wall is spaced apart from the lateral structure, and when a predetermined external force acts on the wall in its width direction, the connecting means releases the constraint of the side of the wall against the lateral structure, causing at least one of the upper or lower edge of the wall to become slidably movable relative to the corresponding structure.

4. 3. A warehouse wall structure according to claim 1, wherein a buffer material is interposed between the side end of the wall body and a structure on the side opposite the side end.

5. A method for constructing a warehouse wall structure includes arranging a plurality of insulation panels between vertically spaced structures and airtightly joining opposing side edges of adjacent insulation panels to form a wall body, A method for constructing a warehouse wall structure, characterized in that at least one of the upper and lower edge portions of the wall body is held in a state where it can slide and move in the width direction of the wall body relative to the corresponding structure.

Images