Construction method of refrigerated warehouse, and structure
Patent Information
- Application Number
- JP2023033579
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-03-06
- Publication Date
- 2026-03-02
AI Technical Summary
Existing methods for constructing refrigerated warehouses face challenges in workability and resource efficiency due to the need for high-place spraying of insulating and fireproof materials, which are labor-intensive and material-wasteful, especially on multi-story structures.
A method and structure that involves laying non-combustible heat insulating panels on supporting materials between beams, forming a flat surface, pouring concrete, and using the same materials as rim materials for outer walls, while forming a fire-resistant heat insulating layer on protruding beams and panel surfaces, reducing the need for high-place spraying.
This approach enhances workability by minimizing high-place spraying, conserves resources by reusing supporting materials as furring materials, and ensures effective insulation and fire resistance in refrigerated warehouses.
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Abstract
Description
[Technical field]
[0001] The present invention relates to a method for constructing a refrigerated warehouse and its structure, and more specifically, to a method for constructing a refrigerated warehouse and its structure that can improve workability and save resources while ensuring thermal insulation and fire resistance. [Background technology]
[0002] Refrigerated warehouses (including freezer warehouses) require high insulation to maintain low temperatures inside, and the structure also needs to be fire-resistant. Conventionally, to construct floor slabs on the second or higher floors of a refrigerated warehouse, for example, a deck with trusses is erected on beams, and a reinforced concrete floor is formed on the front side (top side) of this deck. The back side (bottom side) of this deck plate, including the beams, is then covered with insulation material (urethane foam) or a fireproof coating material.
[0003] Heat insulating materials (such as urethane foam) and fireproof coating materials are sprayed on-site (see, for example, Patent Document 1). Spraying work on the upper floor beams and the deck erected on these beams requires work at high altitudes, which places an excessive burden on the workers when the work area is large, and the curing work becomes complicated, which is a factor in reducing workability. In addition, in light of the recent shortage of materials, it would be beneficial to reduce the resources used. Therefore, there is room for various considerations in order to improve workability and save resources while ensuring the insulation and fire resistance of refrigerated warehouses. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Patent Publication No. 2022-84413 Summary of the Invention [Problem to be solved by the invention]
[0005] An object of the present invention is to provide a method for constructing a refrigerated warehouse and a structure thereof that can improve workability and conserve resources while ensuring thermal insulation and fire resistance. [Means for solving the problem]
[0006] In order to achieve the above-mentioned object, the method for constructing a refrigerated warehouse of the present invention is a method for constructing a refrigerated warehouse having two or more floors, and when constructing a floor slab on the second or higher floor, a plurality of supporting materials are placed between beams at intervals, non-combustible insulating panels are laid on each of the supporting materials to form a plane, concrete is poured on this plane to form a concrete floor, and a fire-resistant insulating layer is formed by covering the portions of the beams that protrude below the non-combustible insulating panels and the underside areas of the non-combustible insulating panels adjacent to these portions with a sprayed material, and after the poured concrete has solidified, a portion of the plurality of supporting materials are removed from between the beams and used as furring materials for the outer wall of the refrigerated warehouse.
[0007] The structure of a refrigerated warehouse of the present invention is characterized in that, in the structure of a refrigerated warehouse having two or more floors, the floor slab on the second or higher floor has supporting materials spanned between beams at intervals, non-combustible insulating panels laid on the supporting materials to form a flat surface, a concrete floor formed on the flat surface, and a fire-resistant insulating layer covering the portion of the beam that protrudes below the non-combustible insulating panels and the underside area of the non-combustible insulating panels adjacent to this portion, and a supporting material of the same specifications as the supporting materials is used as a furring material for the outer wall of the refrigerated warehouse. Effect of the Invention
[0008] According to the present invention, the floor slab is configured to have the non-combustible insulation panel, the concrete floor formed thereon, and a fireproof insulation layer covering the portion of the beam protruding below the non-combustible insulation panel and the lower surface area of the non-combustible insulation panel adjacent to this portion, thereby ensuring the necessary insulation and fire resistance. In addition, the non-combustible insulation panel is laid on a support material that is spaced apart between the beams to form a plane, thereby efficiently providing a non-combustible insulation structure over a wide area. Since the fireproof insulation layer only needs to be provided on the downward protruding portion of the beam and the lower surface area, the area in which the fireproof insulation layer is formed by spraying is suppressed, and the work load at high places is greatly reduced, which greatly contributes to improving the workability. Furthermore, the support material can be used as the furring material, and the amount of material that is scattered around and wasted by spraying during the construction of the fireproof insulation layer can be reduced, which is excellent in terms of resource saving. [Brief description of the drawings]
[0009] [Figure 1] FIG. 1 is an explanatory diagram illustrating a structure of a refrigerated warehouse of the present invention in a vertical cross-sectional view. [Diagram 2] FIG. 2 is an explanatory diagram illustrating a floor slab on the second floor of FIG. 1 in plan view. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] 3 is a cross-sectional view of FIG. 2 taken along line B-B. [Diagram 5] FIG. 2 is a perspective view illustrating a non-combustible insulating panel. [Figure 6] 3 is an explanatory diagram illustrating the pillars and beams in FIG. 2 in a plan view. FIG. [Figure 7] 7 is an explanatory diagram illustrating, in a plan view, a state in which a support material is bridged between the beams in FIG. 6.
[0023] FIG. [Figure 8] 8 is an explanatory diagram illustrating the state of FIG. 7 in a cross-sectional view. [Figure 9] 8 is an explanatory diagram illustrating, in plan view, a process of laying a noncombustible heat insulating panel on the support material of FIG. 7 to form a flat surface. FIG. [Figure 10]10 is an explanatory diagram illustrating, in plan view, a plane formed by the non-combustible heat insulating panels of FIG. 9 . FIG. [Figure 11] 11 is an explanatory diagram illustrating the state of FIG. 10 in a cross-sectional view. FIG. [Figure 12] FIG. 12 is an explanatory diagram illustrating, in cross section, the state in which a concrete floor is formed on the surface of the non-combustible heat insulating panel of FIG. [Figure 13] 13 is an explanatory diagram illustrating a cross-sectional view of the state in which some of the supporting materials in FIG. 12 have been removed; FIG. [Figure 14] FIG. 2 is an explanatory diagram illustrating an enlarged cross-sectional view of an outer wall being constructed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] Hereinafter, a method for constructing a refrigerated warehouse and its structure according to the present invention will be described based on the embodiment shown in the drawings. A refrigerated warehouse is a warehouse in which the inside temperature is kept below 10°C, and includes a freezer.
[0011] The embodiment of the structure of the refrigerated warehouse 1 illustrated in Figures 1 to 4 has two or more floors. In this refrigerated warehouse 1, the floor slab S1 on the first floor employs a known structure such as a laminate of insulating building materials and a reinforced concrete floor supported by foundation beams, and the floor slabs S2, S3, and S4 (hereinafter collectively referred to as floor slabs Sn) and the exterior wall 12 on the second and higher floors have their own unique features. Since the structure of each floor slab Sn is substantially the same, the structure of the floor slab S2 on the second floor will be described as a representative example.
[0012] This floor slab S2 is formed on the beams 3 extending to the ceiling of the first floor. Therefore, the floor slab S3 of the third floor is formed on the beams 3 extending to the ceiling of the second floor, and the floor slab S4 of the fourth floor is formed on the beams 3 extending to the ceiling of the third floor. As illustrated in Fig. 2, in this embodiment, the beams 3 include main beams 3a extending between the columns 2 and small beams 3b arranged at intervals between the main beams 3a. These beams 3 (3a, 3b) are steel beams. Studs 4 are protruding from appropriate positions on the upper surfaces of the beams 3 (3a, 3b).
[0013] The floor slab S2 has a number of supports 5 spaced apart between the beams 3 (3a, 3b), a number of non-combustible insulation panels 6 laid on these supports 5, a concrete floor 9 formed on these non-combustible insulation panels 6, and a fire-resistant insulation layer 10 covering the downward protruding portions of each beam 3 and the underside areas of the non-combustible insulation panels 6 adjacent to these portions.
[0014] Each support member 5 is detachably attached to the beams 3 (3a, 3b) via, for example, a known gusset plate 8. Each support member 5 can be removed from the gusset plate 8 by removing the fixing bolts. In this embodiment, the support member 5 is made of two metallic channel members with a C-shaped cross section joined at their back surfaces. The support member 5 is not limited to this specification, and various known metal members such as a steel member with a T-shaped cross section can be used.
[0015] The noncombustible heat insulating panel 6 is constructed by interposing a noncombustible heat insulating layer 6b between a pair of upper and lower thin metal plates 6a. Known noncombustible heat insulating materials can be used for the noncombustible heat insulating layer 6b, for example, isocyanurate foam, polyurethane foam, etc. The thickness of the noncombustible heat insulating layer 6b is determined based on the required noncombustibility, heat insulating properties, strength, etc., and is preferably set to, for example, 50 mm or more and 300 mm or less. If the thickness is less than 50 mm, it is difficult to ensure sufficient noncombustibility and heat insulating properties, and if it exceeds 300 mm, the weight increases and this causes a decrease in workability. The noncombustible heat insulating layer 6b itself is not a material that bears the strength of the noncombustible heat insulating panel 6, but as the noncombustible heat insulating layer 6b becomes thicker, the distance between the pair of thin metal plates 6a increases, improving the bending strength of the noncombustible heat insulating panel 6. Therefore, the thickness of the noncombustible heat insulating layer 6b is set in consideration of the strength (bending strength) required for the noncombustible heat insulating panel 6.
[0016] The thin metal plates 6a covering the entire area of both surfaces of the non-combustible heat insulating layer 6b are made of various steel plates such as general structural carbon steel plates, aluminum alloy plates, etc. The thickness of the thin metal plates 6a is, for example, 0.35 mm to 1.0 mm, and more preferably 0.5 mm to 0.8 mm. If the thickness is too small, it becomes difficult to ensure sufficient strength of the non-combustible heat insulating panel 6, and if the thickness is too large, the weight increases, which causes a decrease in workability. The thin metal plates 6a block moisture.
[0017] As shown in Fig. 5, the noncombustible insulation panel 6 is basically a rectangular plate body, with thin metal plates 6a bonded to both surfaces of the noncombustible insulation layer 6b. The noncombustible insulation panel 6, which is an integral structure of the noncombustible insulation layer 6b and two thin metal plates 6a, is manufactured in a factory and transported to the site. The noncombustible insulation panel 6 is processed into a predetermined shape on site as necessary. The required number of noncombustible insulation panels 6 are laid on the support material 5 with the end faces of adjacent panels facing each other to form a flat surface.
[0018] In this embodiment, the upper surfaces of the beams 3 (3a, 3b) and the upper surfaces of the non-combustible insulating panels 6 are set at the same level (within a range of ±10 mm). When the upper surfaces of both are set at substantially the same level in this way, the thickness of the concrete floor 9 above the beams 3 (3a, 3b) and the non-combustible insulating panels 6 becomes the same. As a result, the quality of the concrete floor 9 is made uniform over a wide area, which is advantageous in avoiding localized deterioration.
[0019] The gaps between the opposing end faces of adjacent non-combustible heat insulating panels 6 are filled with a filler 7 such as urethane foam. For example, a moisture-proof tape made of an aluminum base material is extended across the opposing end faces of the non-combustible heat insulating panels 6 to cover the filler 7 filled in the gaps.
[0020] A metal support plate 8a is welded to the beams 3 (3a, 3b) so as to protrude horizontally above the gusset plate 8. This support plate 8a is disposed on the underside of the non-combustible heat insulating panel 6 so as to cover the gap between the end face of the non-combustible heat insulating panel 6 and the beams 3 (3a, 3b).
[0021] The concrete floor 9 is formed on the plane formed by the laid non-combustible heat insulating panels 6 so as to cover the entire area of the plane. This concrete floor 9 is made of reinforced concrete with reinforcing bars 9b arranged inside the concrete 9a. The concrete 9a fills the gap between the beams 3 (3a, 3b) and the end faces of the non-combustible heat insulating panels 6, and the upper area of the backing plate 8a is filled with the concrete 9a. Note that the concrete floor 9 is omitted and not shown in FIG. 2.
[0022] The fireproof insulation layer 10 is formed of an insulation material 10a and a fireproof coating material 10b that cover the portion of the beams 3 (3a, 3b) that protrudes below the noncombustible insulation panel 6 and the underside area of the noncombustible insulation panel 6 adjacent to this portion. The fireproof insulation layer 10 only needs to be formed so that the spaces between the beams 3 (3a, 3b) and the noncombustible insulation panels 6 are not exposed, and it is sufficient to provide the fireproof insulation layer 10 only around the periphery of the beams 3 (3a, 3b). Therefore, most of the underside area of the noncombustible insulation panel 6 is exposed and not covered by the fireproof insulation layer 10.
[0023] The heat insulating material 10a and the fire-resistant coating material 10b are sprayed materials that are sprayed by a spraying operation. A known heat insulating material such as urethane foam is used for the heat insulating material 10a. A known non-combustible material such as rock wool, ceramic fiber, or a ceramic-based fire-resistant coating material is used for the fire-resistant coating material 10b. The periphery of the downward protruding portion of the beam 3 (3a, 3b) is covered with the heat insulating material 10a, the fire-resistant coating material 10b, and other spray materials as necessary.
[0024] On each floor, a wall 11 is erected on the outer end of the floor slabs S1, S2, S3, and S4. That is, the wall 11 is arranged in parallel between the floor slabs adjacent to each other vertically to form a wall. In this embodiment, a non-combustible insulating panel 6 is used as the wall 11. The wall 11 and the non-combustible insulating panel 6 used in the floor slab Sn have the same specifications, but they can also have different specifications. By using the non-combustible insulating panel 6 of the same specifications in this way and standardizing materials, it is advantageous to reduce unnecessary materials. In addition, the reduction in the types of materials used reduces the complexity of material procurement.
[0025] The exterior wall 12 has studs 12a, furring strips 13, and a surface panel 14. The studs 12a are attached to the outer end faces of the floor slabs S1, S2, S3, and S4 via gusset plates 8. A predetermined number of studs 12a are arranged in parallel at intervals, and each stud 12a extends vertically from near the ground to near the roof.
[0026] Furring strips 13 are fixed to each stud 12a at intervals in the vertical direction. Each furring strip 13 extends horizontally. A surface plate 14 is fixed to the stud 12a via these furring strips 13. The outside of each wall body 11 is covered by the surface plate 14. The furring strips 13 and the support material 5 have the same specifications.
[0027] The roof can have various known structures. In this embodiment, non-combustible heat insulating panels 6 that form the ceiling surface of the fourth floor are suspended from the roof material. In this refrigerated warehouse 1, each floor is essentially a closed compartment surrounded by non-combustible heat insulating panels 6.
[0028] An example of a procedure for constructing a refrigerated warehouse 1 according to the present invention will be described.
[0029] Upper floors are constructed in sequence starting from the first floor of the indoor portion of the refrigerated warehouse 1 (portion excluding the exterior wall 12), and the outdoor portion of that floor (exterior wall 12) is constructed around the time when construction of the floor is completed. Therefore, construction of the outdoor portion of the first floor (exterior wall 12) is started around the time when construction of the indoor portion of the first floor of the refrigerated warehouse 1 is completed, and construction of the outdoor portion of the second floor (exterior wall 12) is started around the time when construction of the indoor portion of the second floor of the refrigerated warehouse 1 is completed, and so the indoor portion is constructed before the outdoor portion.
[0030] The columns 2 and beams 3 (3a, 3b) are assembled by a known procedure. The floor slab S1 of the first floor is constructed by a known method, and the required number of walls 11 are erected on the floor slab S1 in a line by a known method.
[0031] The floor slab S2 of the second floor is constructed on the beams 3 (3a, 3b) shown in Fig. 6. Therefore, as shown in Fig. 7, a plurality of supports 5 are installed at intervals between the beams 3 (3a, 3b) and the beams 3 (3a, 3b). Each support 5 is installed by attaching it to the beams 3 (3a, 3b) via a gusset plate 8 as shown in Fig. 8.
[0032] A support plate 8a is welded to the middle of the vertical direction of each beam 3 (3a, 3b) to protrude from it. Also, a stud 4 is provided on the top surface of each beam 3 (3a, 3b). The stud 4 may be provided at an appropriate time before pouring the concrete 9a.
[0033] Next, as shown in Fig. 9, non-combustible insulating panels 6 are laid on each of the supports 5 that are laid between the beams 3 (3a, 3b) to form a plane. The required number of non-combustible insulating panels 6 are laid so that the area surrounded by the beams 3 (3a, 3b) is filled. In this way, as shown in Figs. 10 and 11, the laid non-combustible insulating panels 6 form a plane that is substantially at the same level as the upper surfaces of the beams 3 (3a, 3b).
[0034] 11, there is a slight gap (e.g., 20 mm to 50 mm) between the upper surface of each beam 3 (3a, 3b) and the end surface of the non-combustible heat insulating panel 6. In addition, the end surface of the non-combustible heat insulating panel 6 is located on the backing plate 8a.
[0035] Next, to form the concrete floor 9, reinforcing bars 9b are arranged on the plane formed by the laid noncombustible insulation panels 6. After that, concrete 9a is poured on this plane, and the arranged reinforcing bars 9b and studs 4 are embedded in the concrete 9a. The poured concrete 9a flows into the gaps between the top surfaces of the beams 3 (3a, 3b) and the end faces of the noncombustible insulation panels 6. The poured concrete 9a is supported by the backing plate 8a, and the area surrounded by the beams 3 (3a, 3b), the end faces of the noncombustible insulation panels 6, and the backing plate 8a is filled with concrete 9a.
[0036] Therefore, in this embodiment, each noncombustible insulating panel 6 and backing plate 8a functions as a formwork for pouring concrete. Each support 5 supports each noncombustible insulating panel 6 that functions as a formwork for pouring concrete. Therefore, the specifications and number of supports 5 are set so that they can support the weight of the concrete 9a and the noncombustible insulating panels 6 when the concrete 9a is poured.
[0037] When the poured concrete 9a hardens after a specified curing period, a concrete floor 9 is formed on the plane formed by the non-combustible heat insulating panels 6, as shown in Fig. 12. Since the concrete floor 9 has sufficient strength to withstand its own weight, it is not necessary to leave all of the supporting materials 5 after the concrete 9a has hardened.
[0038] Therefore, after the poured concrete 9a has solidified, some of the supports 5 are removed from between the spanning beams 3 (3a, 3b) as shown in FIG. 13. To remove the supports 5 from the beams 3 (3a, 3b), the bolts of the gusset plates 8 joining them together can be removed. Of the number of supports 5 used, for example, 50% to 80% are removed. After it is confirmed that the removed supports 5 have not been deformed or damaged beyond a preset standard, they are used as furring strips 13 for the exterior wall 12, as described below.
[0039] When the concrete floor 9 is formed, a fireproof insulation layer 10 is formed on the portion of each beam 3 (3a, 3b) protruding downward from the non-combustible insulation panel 6 and on the underside area of the non-combustible insulation panel adjacent to this portion. Then, the insulation material 10a and the fireproof coating material 10b are sprayed sequentially on the downward protruding portion of the beam 3 (3a, 3b) and the underside area of the non-combustible insulation panel 6 adjacent to this portion, so that the downward protruding portion of the beam 3 (3a, 3b) and the underside area of the non-combustible insulation panel 6 adjacent to this portion are covered with the insulation material 10a and the fireproof coating material 10b. This constructs the floor slab S2 having the structure illustrated in Figures 3 and 4. The required number of walls 11 are arranged and erected on the constructed floor slab S2 by a known method.
[0040] As shown in Figure 14, when construction of the second floor slab S2 is completed, the exterior wall 12 of the first floor is constructed outdoors. In the outdoor work, vertically extending partition 12a is connected to gusset plates 8 attached to the outer end faces of the concrete floor 9 of the floor slabs S1 and S2. Furring strips 13 are fixed to each partition 12a so as to cross the partition 12a, which are erected in parallel with a gap between them. Multiple furring strips 13 extend horizontally at a specified interval above and below.
[0041] Next, by attaching a surface plate 14 to each furring strip 13, the exterior wall 12 is constructed in which the surface plate 14 is fixed to the studs 12a via the furring strips 13. On each floor, indoor and outdoor work can be carried out in parallel, but in this embodiment, the indoor work is carried out before the outdoor work, and the support material 5 removed during the indoor work is used as the furring strip 13 in the outdoor work.
[0042] That is, some of the support materials 5 used in constructing the floor slab S2 of the second floor are removed and used as furring strips 13 when constructing the exterior walls 12 of the first floor. Alternatively, these removed support materials 5 may be used as furring strips 13 when constructing the exterior walls 12 of the second floor, third floor, etc. to be constructed thereafter. Therefore, the furring strips 13 used when constructing the exterior walls 12 are a mixture of new and support materials 5 that have already been used.
[0043] In this way, indoor work and outdoor work are carried out in sequence up to the fourth floor. The roof portion is constructed using known procedures, and the construction of the refrigerated warehouse 1 is completed by extending the exterior walls 12 up to the vicinity of the roof.
[0044] According to the embodiment of the method for constructing the refrigerated warehouse 1 and the structure of the refrigerated warehouse 1, the floor slab Sn is configured to have the noncombustible insulating panels 6, the concrete floor 9, and the fireproof insulating layer 10 as described above, thereby ensuring the necessary insulation and fireproofing properties for the refrigerated warehouse 1. In addition, by laying the required number of noncombustible insulating panels 6 on the supporting material 5 to form a plane, a wide area can be efficiently made into a noncombustible insulating structure.
[0045] The fireproof insulation layer 10 is provided not on the entire underside area of each non-combustible insulation panel 6, but on the downward protruding portion of the beam 3 (3a, 3b) and the underside area of the non-combustible insulation panel 6 adjacent to this downward protruding portion. Therefore, the area in which the fireproof insulation layer 10 is formed by spraying the insulation material 10a, the fireproof coating material 10b, etc. is greatly reduced compared to the conventional technology. As a result, the burden of spraying work at high places is greatly reduced, which greatly contributes to improving workability. The surrounding area that needs to be cured during the spraying work is narrowed, which is also advantageous in improving workability in this respect.
[0046] Furthermore, some of the support materials 5 are also used as furring strips 13, reducing the amount of materials used in construction and contributing to resource conservation. In situations where materials are in short supply, being able to use one type of material for different functions in sequence like this is advantageous in reducing the risk of construction delays due to waiting for materials. In addition, the area in which the fireproof insulation layer 10 is formed is reduced by the spraying work, so the amount of insulation material 10a and fireproof coating material 10b that is scattered around and wasted by the spraying work is reduced compared to conventional technology, contributing to resource conservation.
[0047] Since the support material 5 will be used later as the furring strip 13, the specifications are set to satisfy both the strength required for the support material 5 and the strength required for the furring strip 13. In this embodiment, the noncombustible insulating panel 6 will be used both as a member of the floor slab Sn and as the wall body 11, so the specifications are set to satisfy both the strength required for the member of the floor slab Sn and the strength required for the wall body 11.
[0048] In the embodiment described above, all floor slabs Sn (floor slabs S2, S3, S4) on the second floor or higher have the above-mentioned structure, but it is sufficient that the floor slab Sn on at least one floor on the second floor or higher has the above-mentioned structure, and it is preferable that the floor slabs Sn on 50% or more of the floors on the second floor or higher have the above-mentioned structure. [Explanation of symbols]
[0049] 1. Refrigerated Warehouse 2 Pillars 3 beams 3a girder 3b Small beam 4 Studs 5 Support material 6. Non-combustible insulation panels 6a Thin metal plate 6b Non-combustible insulation layer 7 Filling material 8 Gusset Plate 8a Support plate 9. Concrete Floor 9a Concrete 9b Steel Bar 10 Fireproof insulation layer 10a Insulation material (spray material) 10b Fireproof coating material (spray material) 11 Wall (non-combustible insulation panel) 12 Exterior Wall 12a Stud 13. Flange material 14 Surface plate S1 Floor slab on the first floor Sn (S2, S3, S4) Floor slabs on the second floor and above
Claims
1. A method for constructing a refrigerated warehouse having two or more floors, When constructing floor slabs on the second floor or higher, multiple supports are placed at intervals between beams, Lay non-combustible heat insulating panels on each of the supports to form a flat surface; A method of constructing a refrigerated warehouse involves pouring concrete on this plane to form a concrete floor.
2. A method for constructing a refrigerated warehouse as described in claim 1, in which a fire-resistant insulation layer is formed by covering the portion of the beam that protrudes below the non-combustible insulation panel with sprayed material.
3. A method for constructing a refrigerated warehouse as described in claim 2, wherein the fire-resistant insulation layer covers the underside area of the non-combustible insulation panel adjacent to the portion of the beam that protrudes downward below the non-combustible insulation panel.
4. A method for constructing a refrigerated warehouse as described in claim 1, wherein, after the concrete floor has solidified, some of the multiple support materials are removed from between the spanning beams and used as furring materials for the outer wall of the refrigerated warehouse.
5. 5. The method for constructing a refrigerated warehouse according to any one of claims 1 to 4, wherein non-combustible heat insulating panels having the same specifications as the non-combustible heat insulating panels are used as walls of the refrigerated warehouse.
6. 5. A method for constructing a refrigerated warehouse according to any one of claims 1 to 4, wherein the upper surfaces of the beams and the non-combustible heat insulating panels are set at the same level.
7. In a refrigerated warehouse structure with two or more floors, The floors on the second floor and above are supported by supports spaced apart between beams; a non-combustible heat insulating panel laid on the support material to form a flat surface; A refrigerated warehouse structure having a concrete floor formed on the plane.
8. A structure of a refrigerated warehouse as described in claim 7, having a fire-resistant insulation layer covering the portion of the beam that protrudes below the non-combustible insulation panel.
9. A construction structure of a refrigerated warehouse as described in Claim 8, wherein the fire-resistant insulation layer covers the underside area of the non-combustible insulation panel adjacent to the portion of the beam that protrudes downward below the non-combustible insulation panel.
10. The non-combustible heat insulating panels are laid side by side on either side of the beam, There is a gap between the beam and the non-combustible insulation panel, 10. A refrigerated warehouse structure according to any one of claims 7 to 9, wherein a flat plate-shaped receiving member is provided to protrude from the beam so as to cover the gap.
11. A structure of a refrigerated warehouse as described in Claim 10, wherein the concrete floor penetrates into the gap and is filled onto the receiving member.
12. A refrigerated warehouse structure as described in claims 7 to 9, wherein the fire-resistant insulation layer covers the spaces between the beams and the non-combustible insulation panels, and between the non-combustible insulation panels.
13. A structure of a refrigerated warehouse as described in claims 7 to 9, wherein the support material has the same specifications as the furring material of the outer wall of the refrigerated warehouse.