JP2017142047A - Outer wall structure of freezing/refrigeration storehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outer wall structure for a freezing/refrigeration storehouse having a plurality of floors, having a lower weight, high fire resistance, and high thermal insulation properties.SOLUTION: A heat insulation panel 12 constructed by sandwiching a heat insulation material 14 between two metal plates 13, 13 is arranged on the top and the bottom of a concrete floor slab 4 separating an upper flow and a lower flower. A rock wool layer 15 is provided in an outdoor side of the heat insulation panel 12. An exterior material 21 is attached to an end portion of the floor slab 4 via a bracket 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an outer wall structure of a refrigerated warehouse or a refrigerated warehouse having heat insulation and fire resistance.

  Conventionally, as an outer wall structure of a freezer warehouse or a refrigerated warehouse, as disclosed in Patent Document 1, a structure in which a heat insulating material and an exterior material are arranged on the outdoor side of a concrete fireproof outer wall is known. Further, Patent Document 2 discloses a fireproof heat insulating plate material in which a nonflammable layer made of a calcium silicate plate, alumina silicate fiber paper, and a steel plate is coated on both surfaces of a heat insulating layer made of foamed hard urethane as an outer wall material of a freezer warehouse. Has been. Such a refractory heat insulating plate is lightweight and has an advantage that the construction is easy and the construction period is short because the outer wall is formed by being attached to the housing.

JP-A-8-4141 JP-A-10-299129

  The outer wall structure disclosed in Patent Document 1 is heavy due to the concrete refractory outer wall. In particular, in the case of a multi-storey structure with two or more floors, there is a problem that the weight of the entire building increases. Therefore, by using a non-concrete refractory heat insulating plate as disclosed in Patent Document 2, it is expected to reduce the weight of the outer wall and improve workability. However, such a refractory heat insulating plate is made of concrete. Fire resistance is low compared to the case of using fireproof outer walls. In order to improve the fire resistance, the non-combustible layer of the fire-resistant and heat insulating plate may be thickened, but as a result, the weight of the fire-resistant and heat-insulating plate increases.

  An object of the present invention is to solve the above-described problems and provide an outer wall structure that is light in weight, has high fire resistance and heat insulation, and is easy to construct in a multi-storey refrigerated warehouse.

A first aspect of the present invention is (1) an outer wall structure of a multi-storey freezer / refrigerated warehouse having at least an outer wall structure having an exterior material and an inner wall material and a concrete floor slab separating upper and lower floors. And
The inner wall material has a heat insulating panel sandwiched between two metal plates and attached to the upper and lower sides of the floor slab, and a rock wool layer covering at least the outdoor surface of the heat insulating panel. And
A gap is formed between the exterior material and the rock wool layer by attaching the exterior material to a bracket that protrudes from an end of the floor slab.

The first aspect of the present invention includes the following configuration as a preferred embodiment.
(2) In said (1), the said heat insulating material is isocyanurate foam.
(3) In the above (1) or (2), the rock wool layer is sprayed rock wool.
(4) In any one of the above (1) to (3), continuous from the lower part of the thermal insulation panel attached above the floor slab to the upper part of the thermal insulation panel attached below the floor slab, An external heat insulating layer made of polyurethane foam covering at least a side of the bracket attached to the end of the floor slab and a part of the rock wool layer is provided.
(5) In (4), the lower part of the heat insulation panel attached above the floor slab and the upper part of the heat insulation panel attached below the floor slab are covered with the external heat insulation layer, respectively. A moisture-proof member that divides the rock wool layer in the vertical direction is attached in the region.
(6) In (5), the moisture-proof member includes an attachment piece attached to the heat insulation panel, a cover piece that covers the surface of the rock wool layer in parallel with the attachment piece, the attachment piece, and the cover piece. And a connecting piece for vertically dividing the rock wool layer, and the cross section is substantially Z-shaped.
(7) In the above (6), the outer heat insulating layer partially covers at least the cover piece.
(8) In (7), at least a moisture-proof coating film covering the external heat insulating layer is provided.
(9) In the above (8), the moisture-proof coating film extends to the rock wool layer exposed above and below the external heat insulating layer, and partially covers the rock wool layer.
(10) In any one of the above (1) to (3), the heat insulation extends from the lower part of the heat insulation panel attached above the floor slab to the upper part of the heat insulation panel attached below the floor slab. On the outdoor side of the panel, a heat insulating member composed of a second heat insulating panel in which a heat insulating material is sandwiched between two metal plates is disposed, and the exposed surface on the outdoor side of the heat insulating panel disposed above and below the floor slab And the said rock wool layer is arrange | positioned continuously to the exposed surface of the outdoor side of the said heat insulation member.
(11) In the above (10), the heat insulating member has a substantially U-shaped cross section, and has the metal plate on the outside and inside of the approximately U-shape.
(12) In the above (10) or (11), polyurethane foam is filled between the heat insulating member and the bracket.
(13) In any one of the above (1) to (12), a floor heat insulating material and then a floor slab on the lowest floor are disposed on the base of the freezing / refrigerated warehouse, and the inner wall material is the floor heat insulating material and Surrounding the periphery of the floor slab on the lowermost floor is disposed on the foundation.

The second aspect of the present invention is an outer wall structure of a multi-storey freezer / refrigerated warehouse having at least an outer wall structure having an exterior material and an inner wall material, and a concrete floor slab separating upper and lower floors,
The inner wall material is a fireproof panel attached to the top and bottom of the floor slab,
A gap is formed between the exterior material and the fireproof panel by attaching the exterior material to a bracket protruding from an end of the floor slab.

And in the second of the present invention, the fireproof panel is:
(14) having two metal plates and a rock wool layer sandwiched between the two metal plates,
(15) Two metal plates, two rock wool layers disposed inside the two metal plates, and polyurethane foam, phenol foam, and isocyanurate foam sandwiched between the two rock wool layers An intermediate layer made of any of
One of them.

The second aspect of the present invention includes the following configuration as a preferred embodiment.
(16) In the above (14) or (15), the floor slab is continuous from the lower part of the refractory panel attached above the floor slab to the upper part of the refractory panel attached below the floor slab. An external heat insulating layer made of polyurethane foam covering the end of the bracket, the side of the bracket attached to at least the end of the floor slab, and a part of the metal plate of the fireproof panel.
(17) In the above (16), a moisture-proof coating film covering the external heat insulating layer is provided.
(18) In any one of the above (14) to (17), a floor heat insulating material and then a floor slab on the lowermost floor are disposed on the base of the refrigeration / refrigeration warehouse, and the inner wall material is the floor heat insulating material and Surrounding the periphery of the floor slab on the lowermost floor is disposed on the foundation.

In the first outer wall structure of the present invention, the following effects are obtained.
In the present invention, since the inner wall material is light and has a rock wool layer having high fire resistance as the fire resistant layer, an outer wall structure of a light weight and high fire resistance freezing / refrigerated warehouse is obtained, and fire resistance for 1 hour is achieved. It can also be an outer wall that meets the standards. Moreover, since the exterior material is arranged on the outdoor side of the rock wool layer, the rock wool layer is protected from the external environment, and fire resistance is maintained. In the present invention, since the exterior material is attached to the end of the floor slab via a bracket, a gap is formed between the exterior material and the rock wool layer, and the rock wool layer is crushed with the exterior material. The rock wool layer can be protected with an exterior material without any influence.

  Furthermore, in the present invention, an end of the floor slab and the bracket are provided by providing an external heat insulating layer made of polyurethane foam from the lower part of the heat insulating panel above the floor slab separating the upper and lower floors to the upper part of the lower heat insulating panel. The thermal insulation around the area is improved. Further, since the rock wool layer near the end of the floor slab is covered with the external heat insulating layer, it is possible to prevent moisture from entering the rock wool layer near the end of the floor slab. Moisture that has penetrated into the wall is condensed and the rock wool layer hangs downward, and further, the rock wool layer is prevented from being peeled off from the heat insulating panel, thereby reducing the fire resistance of the outer wall. Moreover, it is suppressed that the said heat insulation layer peels off and the heat insulation of the edge part vicinity of a floor slab falls by the hanging or peeling of the rock wool layer which concerns.

  Further, in the present invention, by disposing a moisture-proof member in the region covered with the external heat insulating layer, moisture penetrates into the rock wool layer from the surface of the rock wool layer not covered with the external heat insulating layer, It is possible to prevent such moisture from penetrating into the vicinity of the floor slab and causing condensation to reduce the fire resistance of the outer wall and the heat insulation near the end of the floor slab.

  Furthermore, by covering the external heat insulating layer with a moisture-proof coating film, the external heat insulating layer is protected from moisture, and deterioration of the external heat insulating layer due to moisture is prevented.

  In the present invention, a heat insulating member made of the second heat insulating panel is disposed on the outdoor side from the lower part of the heat insulating panel above the floor slab separating the upper and lower floors to the upper part of the lower heat insulating panel. By arranging the rock wool layer on the exposed surface of the heat insulating panel and the heat insulating member on the outdoor side, the heat insulating property around the end of the floor slab is improved, and at the same time, the heat insulating member is provided between the rock wool layer and the floor slab. Therefore, the condensation does not occur in the rock wool layer, and there is no possibility that the rock wool layer is peeled off by the condensation and the fire resistance of the outer wall is lowered. In particular, by filling a heat insulating filler such as polyurethane foam between the bracket and the heat insulating member, the heat insulating property around the bracket is further improved.

  In the outer wall structure of the present invention, the inner wall material is composed of a non-concrete heat insulation panel and a rock wool layer, so that it is lightweight and easy to install. Moreover, both the construction of the external heat insulation layer and the moisture-proof coating and the installation construction of the heat insulation member are easy and can be carried out in a short period of time. Therefore, according to the present invention, it is possible to obtain an outer wall structure of a refrigeration / refrigeration warehouse that is lightweight, has high fire resistance and heat insulation, and can be constructed at low cost in a short period of time.

In the second outer wall structure of the present invention, the following effects can be obtained.
In the present invention, since the inner wall material is composed of a non-concrete fireproof panel, it is lightweight and easy to construct, and it can also be a one-hour fireproof outer wall structure.

  Further, in the present invention, an end of the floor slab and the bracket are provided by providing an external heat insulating layer made of polyurethane foam from the lower part of the fireproof panel above the floor slab separating the upper and lower floors to the upper part of the lower fireproof panel. The thermal insulation around the area is improved. Furthermore, by covering the external heat insulating layer with a moisture-proof coating film, the external heat insulating layer is protected from moisture, and deterioration of the external heat insulating layer due to moisture is prevented.

  The outer wall structure of the present invention is lightweight and easy to construct because the inner wall material is a non-concrete heat-resistant panel. In addition, both the external heat insulating layer and the moisture-proof coating can be applied easily and in a short period of time. Therefore, according to the present invention, it is possible to obtain an outer wall structure of a refrigeration / refrigeration warehouse that is lightweight, has high fire resistance and heat insulation, and can be constructed at low cost in a short period of time.

  In both the first and second outer wall structures of the present invention, a floor heat insulating material and a floor slab are disposed on the foundation, and a heat insulating panel or a fireproof panel is disposed surrounding the periphery of the floor heat insulating material and the floor slab. Therefore, a heat transfer path leading from the floor slab to the foundation is not formed, and a rising heat insulating material rising from the peripheral edge of the floor heat insulating material is unnecessary, and a wide floor area can be obtained.

It is a cut part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of one embodiment of the 1st outer wall structure of the present invention. It is sectional drawing of the horizontal direction of the outer wall structure of FIG. 1, and is A-A 'sectional drawing of FIG. It is a cut part end elevation of an outer wall thickness direction and a perpendicular direction for showing typically composition of other embodiments of an outer wall structure of the present invention. FIG. 4 is a horizontal cross-sectional view of the outer wall structure of FIG. 3, and is a C-C ′ cross-sectional view of FIG. 3. FIG. 4 is an enlarged view of the vicinity of the moisture-proof member of FIG. 3 and an enlarged view of a region D surrounded by a broken line in FIG. 3. FIG. 6 is an end view showing an application example of the embodiment of FIG. 3, and is a view of the same region as FIG. 5. It is a cut part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of other embodiments of the 1st outer wall structure of the present invention. FIG. 8 is an end view of the outer wall in the thickness direction and in the vertical direction at different positions in the horizontal direction in the same embodiment as in FIG. 7. It is sectional drawing of the horizontal direction of the outer wall structure of FIG. 7, and is F-F 'sectional drawing of FIG. It is sectional drawing of the horizontal direction of the outer wall structure of FIG. 7, and is G-G 'sectional drawing of FIG. It is a cutting part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of an embodiment of the 2nd outer wall structure of the present invention. FIG. 12 is a horizontal sectional view of the outer wall structure of FIG. 11, and is a J-J ′ sectional view of FIG. 11. It is a cut part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of other embodiments of the 2nd outer wall structure of the present invention. It is a cut part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of other embodiments of the 2nd outer wall structure of the present invention. It is sectional drawing of the horizontal direction of the outer wall structure of FIG. 14, and is L-L 'sectional drawing of FIG. It is a cut part end view of the thickness direction of an outer wall, and the perpendicular direction for showing typically composition of other embodiments of the 2nd outer wall structure of the present invention.

  The outer wall structure of the present invention is an outer wall structure applied to a refrigerated warehouse and a refrigerated warehouse (refrigerated / refrigerated warehouse) having a reinforced concrete (RC) structure or a steel reinforced concrete (SRC) structure. Instead of an inner wall material with a heat insulating material attached to the outdoor side of a concrete panel such as a wall or spun cleat, an inner wall material consisting of a heat insulating panel sandwiched between two metal plates and a rock wool layer, or a fireproof panel It is characterized by the use. The outer wall structure of the present invention is an outer wall structure of a freezing / refrigerated warehouse having a concrete floor slab separating upper and lower floors, and an exterior material is attached to an end of the floor slab via a bracket. Hereinafter, the outer wall structure of the present invention will be described in detail with reference to embodiments.

<First outer wall structure>
FIG. 1 is a diagram schematically showing a configuration of an embodiment of a first outer wall structure of the present invention, and is an end view of a cut portion in a thickness direction and a vertical direction of the outer wall. 2 is a horizontal cross-sectional view of the outer wall structure of this example, and is a cross-sectional view taken along line AA ′ of FIG. 1 is an end view of the BB ′ cutting part of FIG.

  In the embodiment of FIGS. 1 and 2, 1 is a foundation, 2 is a floor insulation, 3 is a floor slab on the first floor, and 4 is a floor slab that separates the first and second floors. The outer wall structure of the present invention includes an inner wall material 11 and an exterior material 21, and the inner wall material 11 includes a heat insulating panel 12 and a rock wool layer 15 disposed on the outdoor side of the heat insulating panel 12. The exterior material 21 is attached to the end of the floor slab 4 via a bracket 22. Each of the floor slabs 3 and 4 is made of concrete, and may be either one that is placed on-site or one that is constituted by a concrete panel such as spun cleat.

  In the present invention, the heat insulating panel 12 includes a heat insulating material 14 sandwiched between two metal plates 13 and 13. As the heat insulating material 14, isocyanurate foam having high heat insulating properties and flame retardancy is preferably used. The metal plate 13 preferably has a thickness of 0.5 mm to 4.0 mm, and a steel plate, stainless steel, a Garibarium steel plate, and those obtained by applying synthetic resin coating or plating to these are preferably used. The heat insulating material 14 preferably has a thickness of 49 mm to 299 mm, and the heat insulating panel 12 preferably has a thickness of 50 mm to 300 mm. Preferably, the heat insulating panel 12 is an incombustible board for construction of the Minister of Land, Infrastructure, Transport and Tourism certified number NM-3065 or NM-3699, wherein the heat insulating material 14 is isocyanurate foam and the metal plate 13 is a synthetic resin coated steel plate or a synthetic resin coated steel plate. Is used.

  The rock wool layer 15 according to the present invention is a fireproof layer and may be a rock wool sheet formed in a felt shape, but sprayed rock wool is preferable because it is easy to construct. The spray rock wool is formed by spraying rock wool granular cotton together with cement as a binder using a dedicated spray machine. Both have open cells inside and are lightweight and excellent in fire resistance. When the rock wool layer 15 is a rock wool sheet, the heat insulating panel 12 may be attached to the floor slab 4 after the rock wool sheet is previously attached to the heat insulating panel 12 and integrated. Moreover, when the rock wool layer 15 is sprayed rock wool, after attaching the heat insulation panel 12 to the floor slab 4, what is necessary is just to spray rock wool.

  In the present invention, the rock wool layer 15 is provided at least on the outdoor side surface of the heat insulating panel 12. The thickness of the rock wool layer 15 is preferably 10 mm to 50 mm. In the present invention, by using the building incombustible board of the above-mentioned Minister of Land, Infrastructure and Transport authorization number NM-3065 or NM-3699 as the heat insulation panel 12, the rock wool layer 15 is formed by sprayed rock wool, and the Minister of Land, Infrastructure, Transport and Tourism authorization number FP060NE. It is possible to constitute a 1-hour fire-resistant sprayed rock wool coated outer wall of −9305, which can be preferably used as the inner wall material 11 of the present invention.

  In the present invention, since the exterior material 21 is disposed on the outdoor side of the inner wall material 11, the rock wool layer 15 disposed on the outdoor side of the inner wall material 11 is protected from the external environment such as rain, snow, and wind. In addition, the rock wool layer 15 is damaged by the external environment, and the fire resistance of the inner wall material 11 is prevented from being lowered. In the present invention, when the exterior material 21 or the body edge for attaching the exterior material 21 is directly attached to the inner wall material 11, the rock wool layer 15 is crushed by the exterior material 21 or the body edge. Cannot take the configuration. Therefore, in the present invention, the exterior material 21 is attached to the end of the floor slab 4 via the bracket 22, thereby forming a gap between the exterior material 21 and the rock wool layer 15. It is comprised so that the material 21 may not contact.

  In this example, a heat insulation measure is taken by interposing a heat insulating packing 23 between the bracket 22 and the floor slab 4. When the bracket 22 is made of metal, when the bracket 22 is directly attached to the end portion of the concrete floor slab 4, the floor slab 4 and the bracket 22 form a heat transfer path that leads from the indoor side to the outdoor side. However, by interposing the heat insulating packing 23 between the bracket 22 and the floor slab 4 as in this example, it is possible to block the heat transfer path and improve the heat insulating property. As the heat insulating packing 23, a processed product of urethane fiber heat insulating material is preferably used.

  In this example, the end portion of the bracket 22 is attached to a mounting plate 27 that is welded and fixed to the vertical trunk edge 24, and the horizontal trunk edge 25 is attached to the vertical trunk edge 24 by a mounting bracket 26. Although the exterior material 21 is attached to the horizontal trunk edge 25, the attachment plate 27, the vertical trunk edge 24, and the horizontal trunk edge 25 are used as needed depending on the type and size of the exterior material 21 to be attached. As the exterior material 21, a commercially available metal plate for building exterior, a metal corrugated plate, or those obtained by applying resin coating to these are preferably used. Moreover, the draining metal fitting 32 is attached to the lower end of the exterior material 21 as needed.

  The heat insulation panels 12 are arranged above and below the floor slab 4 that separates the upper and lower floors, and are fixed to a member in contact with the heat insulation panel 12 or a member arranged in the vicinity of the heat insulation panel 12. In this example, using the angle 31, the first floor heat insulation panel 12 is fixed to the floor slab 4 at the upper end, the lower end is fixed to the foundation 1, and the lower end of the second floor heat insulation panel 12 is fixed to the floor slab 4. Although shown, the present invention is not limited to such examples. Specifically, the lower end of the heat insulation panel 12 may be fixed to the foundation 1 if it is the first floor, and the floor slab 4 may be fixed to the floor slab 4 if it is higher than the second floor. Alternatively, it may be fixed to a beam (not shown) provided near the end of the floor slab 4, and the top floor is fixed to a ceiling slab, a beam provided near the end of the ceiling slab, a steel frame, or the like. Further, the heat insulating panel 12 in the vicinity of the pillar may be fixed to the pillar with a bracket or the like. In this example, the angle 31 is used for fixing the heat insulating panel 12, but the fixing method is not limited to the angle 31, and screws or nails may be used.

  Moreover, when the heat insulation panel 12 is arrange | positioned at the upper and lower sides of the floor slab 4, a clearance gap may be produced between the lower surface of the floor slab 4 and the upper end of the heat insulation panel 12. In such a case, it is desirable to fill a heat insulating material so that the gap does not become a heat-insulating defect. As the heat insulating material, the heat insulating material 14 of the heat insulating panel 12 or polyurethane foam is preferably used.

  In addition, as shown in FIG. 2, the heat insulation panel 12 according to the present invention is formed by forming one end into a convex shape in the horizontal cross section and the other end into a concave shape that fits into the convex shape. These heat insulation panels 12 can be disposed without gaps in the thickness direction by fitting the heat insulation panels 12 at the end portions that face each other.

  The construction method of the present invention is as follows. When the rock wool layer 15 is made of a rock wool sheet, the heat insulation panels 12 to which the rock wool sheet has been attached in advance are attached to the top and bottom of the floor slab 4 or the heat insulation panels 12 are attached to the top and bottom of the floor slab 4 and then the rock wool. Install the seat. Further, when the rock wool layer 15 is sprayed rock wool, the heat insulation panels 12 are attached to the upper and lower sides of the floor slab 4, and then the rock wool is sprayed to form the rock wool layer 15. Next, the vertical body edge 24 or the horizontal body edge 25 to which the vertical body edge 24 or the attachment plate 27 is attached is attached to the bracket 22 as necessary, and the exterior member 21 is attached. The bracket 22 is attached to the end of the floor slab 4 at a predetermined interval in the horizontal direction. Since the outer wall structure of the present invention is made of non-concrete, complicated work such as placing concrete and attaching heavy concrete panels is unnecessary, and the work is easy and can be performed in a short period of time.

  Note that the bracket 22 is preferably attached to the end of the floor slab 4 after the heat insulating panels 12 are attached to the top and bottom of the floor slab 4, and when the rock wool layer 15 is sprayed rock wool, before the rock wool is sprayed. Is preferred. Since the floor slab 4 is made of concrete and has fire resistance, the rock wool layer 15 only needs to cover at least the outdoor surface of the heat insulating panel 12, but the surface of the floor slab 4 exposed to the outdoor side is covered with the rock wool layer 15. It does not matter if you cover it.

  Even in the case of an outer wall structure in which a heat insulating material is attached to the outdoor side of a conventional concrete fireproof outer wall, the floor heat insulating material 2 is further placed on the foundation 1 and the floor slab 3 is further disposed on the indoor side of the lowest floor. However, since the concrete fireproof outer wall is disposed so as to surround the periphery of the floor heat insulating material 2 and the floor slab 3, a heat transfer path is formed from the floor slab 3 to the foundation 1 through the fireproof outer wall. Therefore, in order to cut off the heat transfer path, the rising heat insulating material rising from the peripheral edge portion of the floor heat insulating material 2 protrudes between the fireproof outer wall and the peripheral edge of the floor slab 3, so that the floor area on the indoor side is It was narrowed by the amount of rising heat insulating material. In the present invention, as shown in FIG. 1, a floor heat insulating material 2 and a floor slab 3 are sequentially disposed on a foundation 1, and surround the peripheral edges of the floor heat insulating material 2 and the floor slab 3. Since it is arrange | positioned on the foundation 1, the floor slab 3 and the foundation 1 are interrupted | blocked, and the heat-transfer path | route connected from the indoor to the foundation 1 is not formed. Therefore, it is not necessary to arrange the rising heat insulating material that rises from the peripheral edge of the floor heat insulating material 2 as described above, and the floor area can be increased.

  The embodiment which improved the heat insulation of the edge part periphery of a floor slab is demonstrated in the outer wall structure of this invention using FIGS. FIG. 3 is a diagram schematically showing the configuration of the outer wall structure of this example, and is an end view of the cut portion in the thickness direction and the vertical direction of the outer wall. FIG. 4 is a horizontal sectional view of the outer wall structure of this example, and is a C-C ′ sectional view of FIG. 3. FIG. 3 is an end view of the E-E ′ cutting part of FIG. 4. 5 is an enlarged view of the vicinity of the moisture-proof member 42 in FIG. 3 (region D surrounded by a broken line). FIG. 6 is an end view showing an application example of this example, and shows the same region as FIG. It is.

  As shown in FIGS. 3 and 4, the outer wall structure of this example basically includes the outer wall structure shown in FIGS. 1 and 2, and further includes an outer heat insulating layer 41 made of polyurethane foam. The outer heat insulating layer 41 is continuous from the lower part of the heat insulating panel 12 attached above the floor slab 4 to the upper part of the heat insulating panel 12 attached below the floor slab 4, and includes a part of the rock wool layer 15 and a bracket. 22 and at least an attachment side to the end of the floor slab 4. Therefore, when the end portion of the floor slab 4 is also covered with the external heat insulating layer 41 and the end portion of the floor slab 4 is covered with the rock wool layer 15, the outdoor side of the rock wool layer 15 is the external heat insulating layer. Covered with layer 41. By being covered with the external heat insulating layer 41, the heat insulating properties around the end of the concrete floor slab 4 and the bracket 22 are enhanced. In addition, since polyurethane foam can be foam-molded in the field, the surface having irregularities such as the periphery of the bracket 22 can be easily heat-insulated without gaps. In the present invention, since a gap is formed between the rock wool layer 15 and the exterior material 21, the external heat insulating layer 41 can be formed using the gap.

  Further, since the rock wool layer 15 has open cells and has air permeability, moisture easily enters the rock wool layer 15 from the outside, and the moisture reaching the vicinity of the floor slab 4 is caused by the floor slab 4. There is a risk of condensation due to cooling. When condensation occurs in the rock wool layer 15, the rock wool layer 15 may hang downward due to the weight of the condensation, and further, the rock wool layer 15 may be peeled off from the heat insulating panel 12, resulting in the inner wall material. 11 fire resistance may be reduced. On the other hand, polyurethane foam is a foam having closed cells and has poor air permeability. Therefore, by covering the rock wool layer 15 near the end of the floor slab 4 with the polyurethane foam, the lock near the floor slab 4 can be obtained. Moisture does not easily enter the wool layer 15, and the occurrence of condensation in the rock wool layer 15 is suppressed.

  Furthermore, in this example, by disposing the moisture-proof member 42 that divides the rock wool layer 15 vertically in the region covered with the external heat insulating layer 41, the rock wool layer 15 is removed from the region not covered with the external heat insulating layer 41. It is possible to prevent moisture that has entered inside from entering the vicinity of the floor slab 4 and causing condensation. The moisture-proof member 42 may be made of metal or synthetic resin, and the shape is not particularly limited as long as the moisture-proof member 42 has no breathability and is a horizontally long member capable of dividing the rock wool layer 15 vertically. However, as shown in FIG. 5, the cross section comprising the cover piece 42a, the attachment piece 42b parallel to the cover piece 42a, and the connection piece 42c connecting the cover piece 42a and the attachment piece 42b is substantially Z-shaped. These members are preferable. The moisture-proof member 42 is attached to the heat insulating panel 12 with a screw or an adhesive (not shown), the cover piece 42 a covers the surface of the rock wool layer 15, and the connection piece 42 c divides the rock wool layer 15. In this example, the moisture-proof member 42 is arranged with the connecting piece 42c as the center and the attachment piece 42b facing the floor slab 4, but the present invention is not limited to this. Conversely, the cover piece 42a may be arranged toward the floor slab 4, but in that case, the end portions of the cover pieces 42a and 42a of the moisture-proof members 42 and 42 arranged vertically with the floor slab 4 interposed therebetween. It is necessary to prevent them from hitting each other. When the end portions of the cover pieces 42a, 42a of the moisture-proof members 42, 42 arranged above and below the floor slab 4 come into contact with each other, the cover pieces 42a, 42a completely connect the end portions of the floor slab 4 from the outdoor side. Therefore, the end of the floor slab 4 cannot be covered with polyurethane foam. Therefore, in this case, the moisture-proof members 42, 42 are attached to the heat-insulating panels 12, 12 so that the ends of the covers 42a, 42a of the upper and lower moisture-proof members 42, 42 are positioned with a gap therebetween.

  The moisture-proof member 42 is attached to the heat insulation panel 12 before the rock wool layer 15 is formed on the heat insulation panel 12. As shown in FIG. 5, the width of the connection piece 42c (in the thickness direction of the outer wall) is such that the heat insulation panel 12 is covered with the rock wool layer 15 in the region surrounded by the heat insulation panel 12, the cover piece 42a, and the connection piece 42c. Using a moisture-proof member 42 whose length of the connecting piece 42c is preferably about 30 mm to 50 mm larger than the thickness of the rock wool layer 15, a rock wool sheet is pushed into the gap between the cover piece 42a and the heat insulating panel 12, or It is desirable to fill the gap with rock wool by spraying wool.

  In this example, as shown in FIG. 5, the outer heat insulating layer 41 is formed so as to partially cover at least the cover piece 42 a, so that the outer heat insulating layer 41 is vertically disposed with the floor slab 4 interposed therebetween. It adheres well to the members 42 and 42 and becomes difficult to peel off.

  Furthermore, in this example, it is preferable to cover the outer heat insulating layer 41 with a moisture-proof coating 51 to protect the outer heat insulating layer 41 from moisture and water. As shown in FIG. 6, the moisture-proof coating 51 is preferably formed until the cover piece 42a of the moisture-proof member 42 and further the rock wool layer 15 not covered with the cover piece 42a are partially covered. . The moisture-proof coating 51 is not particularly limited, but is preferably formed by applying a rubber asphalt emulsion-based moisture-proof material.

  In this example, as described above, the moisture-proof member 42 having a substantially Z-shaped cross section is used, and the rock wool layer 15 between the moisture-proof members 42 and 42 arranged above and below the floor slab 4 and the cover of the moisture-proof member 42. A part of the piece 42a is covered with an external heat insulating layer 41, and further covered with a moisture-proof coating 51, so that the rock wool layer 15 between the moisture-proof members 42 and 42 disposed above and below the floor slab 4 is covered. All the paths through which moisture enters from the outside are blocked to prevent the formation of condensation in the rock wool layer 15 near the floor slab 4, and the fire resistance of the inner wall material 11 is reduced due to the condensation in the rock wool layer 15. At the same time, the outer heat insulating layer 41 is also protected from moisture, and a decrease in heat insulating properties near the end of the floor slab 4 due to deterioration of the outer heat insulating layer 41 is prevented.

  As the moisture-proof member 42, even if the cross-section formed by the attachment piece 42b and the connection piece 42c of the moisture-proof member 42 shown in FIG. The vicinity of the slab 4 can be prevented. Also in the moisture-proof member 42, the attachment piece 42b may be disposed on the floor slab 4 side or on the opposite side.

  Other embodiment which improved the heat insulation of the edge part periphery of the floor slab 4 in the outer wall structure of this invention is demonstrated using FIGS. 7 and 8 are diagrams schematically showing the configuration of the outer wall structure of the present example, and are end face views of the cut portion in the thickness direction and the vertical direction of the outer wall. 7 and 8 are end views of the cutting portion at different positions in the horizontal direction. FIG. 9 is a horizontal cross-sectional view of the outer wall structure of this example, and is a cross-sectional view taken along the line F-F ′ of FIG. 7. FIG. 10 is a horizontal sectional view of the outer wall structure of this example, and is a G-G ′ sectional view of FIG. 7. 7 is an end view of the H-H ′ cut portion of FIG. 9, and FIG. 8 is an end view of the I-I ′ cut portion of FIG. 9.

  Also in this example, as shown in FIGS. 7 to 10, the outer wall structure shown in FIGS. 1 and 2 is basically provided, and a heat insulating member 52 including a second heat insulating panel is further provided. The heat insulation member 52 is attached to the outdoor side of the heat insulation panel 12 from the lower part of the heat insulation panel 12 attached above the floor slab 4 to the upper part of the heat insulation panel 12 attached below the floor slab 4. Therefore, in this example, the edge part of the floor slab 4 is covered with the heat insulating member 52, and the rock wool layer 15 is continuously arranged on the outdoor exposed surface of the heat insulating panel 12 and the outdoor exposed surface of the heat insulating member 52. Has been.

  The heat insulating member 52 used in this example includes a second heat insulating panel in which a heat insulating material 54 is sandwiched between two metal plates 53 and 53. As the heat insulating material 54 and the metal plate 53, the same materials as those of the heat insulating material 14 and the metal plate 13 constituting the heat insulating panel 12 are preferably used. Preferably, the second heat insulating panel is the same as the heat insulating panel 12. The configuration.

  The heat insulating member 52 of this example has a substantially U-shaped cross section in the thickness direction and the vertical direction, and includes metal plates 53 and 53 on the outer side and the inner side of the substantially U-shaped respectively. The heat insulation member 52 is obtained by combining and integrating three second heat insulation panels. Thereby, even when the outdoor side surface of the heat insulation panel 12 is located on the indoor side with respect to the end portion of the floor slab 4, the end portion of the floor slab 4 is disposed inside the substantially U-shape and the heat insulating member 52 is disposed. Can be attached to the heat insulation panel 12.

  In addition, when the outdoor side surface of the heat insulation panel 12 and the edge part of the floor slab 4 are continuing, or when the edge part of the floor slab 4 is retracted indoors, the heat insulation member 52 is It is not necessary to have a substantially U-shaped cross section as in this example, and a plate-like second heat insulation panel may be used as it is. When the heat insulating member 52 is plate-shaped, the metal plate 53 is disposed so as to be parallel to the metal plate 13 of the heat insulating panel 12. And since the edge part of the heat insulating material 54 is exposed to the upper and lower ends of the heat insulation member 52, it is preferable to cover the edge part concerned with the same metal plate as the metal plate 53.

  A general attachment member (not shown) such as a screw, a nail, or an angle can be used to attach the heat insulation member 52 to the heat insulation panel 12.

  Moreover, although the heat insulation member 52 of this example is a long member continuous in the horizontal direction, it is necessary to avoid the bracket 22 and attach it. Specifically, a hole corresponding to the bracket 22 may be formed in the heat insulating member 52 or may be attached so that the end of the heat insulating member 52 abuts against the bracket 22 in the horizontal direction as shown in FIG. In any case, it is desirable to fill the gap between the bracket 22 and the heat insulating member 52 by filling the heat insulating filler 55. As the heat insulating filler 55, the polyurethane foam used as the external heat insulating layer 41 in the examples of FIGS. 3 to 6 is preferably used. The rock wool layer 15 preferably covers the exposed surface of the heat insulating filler 55 as shown in FIGS. 7, 9, and 10.

  In this example, the floor slab 4 is covered with the same configuration as the inner wall material 11 by attaching the heat insulating members 52 to the heat insulating panels 12 arranged above and below the floor slab 4, and the inner wall material 11 is substantially formed on the upper and lower floors. Becomes a continuous structure, and high heat insulation is obtained as a whole. In addition, as described above, when moisture enters the inside of the rock wool layer 15 to cause condensation, the rock wool layer 15 may be peeled off from the heat insulating panel 12. In this example, FIG. As shown in FIG. 10, the heat insulating member 52 or the heat insulating filler 55 is interposed between the rock wool layer 15 and the floor slab 4, and there is no possibility that the rock wool layer 15 is cooled by the floor slab 4. Therefore, there is no risk of condensation even if moisture enters the inside of the rock wool layer 15. As the construction method of the rock wool layer 15, either the above-described rock wool sheet attachment or spraying is preferably used.

  In this example, since the heat insulating member 52 is attached to the heat insulating panel 12, the heat insulating filler 55 is filled as necessary, and the rock wool layer 15 is provided on the exposed surfaces of the heat insulating panel 12 and the heat insulating member 52. Is easy. In addition, by using the building incombustible board of the above-mentioned Minister of Land, Infrastructure and Transport certification number NM-3065 or NM-3699 as the thermal insulation panel 12 and the thermal insulation member 52, and forming the rock wool layer 15 with sprayed rock wool, the Minister of Land, Infrastructure, Transport and Tourism certification number The FP060NE-9305 fireproof rock wool coated outer wall can be constructed continuously on the upper and lower floors.

<Second outer wall structure>
FIG. 11 is a diagram schematically showing a configuration of an embodiment of the second outer wall structure of the present invention, and is an end view of the cut portion in the thickness direction and the vertical direction of the outer wall. 12 is a horizontal cross-sectional view of the outer wall structure of this example, and is a cross-sectional view taken along the line JJ ′ of FIG. FIG. 11 is an end view of the KK ′ cutting part of FIG.

  The basic structure of the second outer wall structure of the present invention is the same as that of the first outer wall structure described above, except that the fireproof panel 62 is used as the inner wall material. Therefore, description of the common configuration is omitted.

  The fireproof panel 62 of FIGS. 11 and 12 has a rock wool layer 64 between the two metal plates 63, 63, but as the fireproof panel 62 used in the present invention, as shown in FIG. The intermediate layer 65 having a heat insulating property made of any one of polyurethane foam, phenol foam, and isocyanurate foam is sandwiched between two rock wool layers 64 and 64, and further, metal plates 63 and 63 are arranged outside thereof. May be. Each has a rock wool layer 64 which is a refractory material, and excellent fire resistance and heat insulation can be obtained. However, if the heat insulation performance is the same, the fireproof panel 62 of FIG. can do.

  As the metal plate 63 used in the present invention, the metal plate 13 used in the first outer wall structure is preferably used. In addition, the rock wool layer 64 is preferably used as long as it is made of rock wool as a main material and can maintain the panel shape. For example, a molded plate obtained by molding rock wool into a plate shape using a resin binder is preferably used. The thickness of the rock wool layer 64 of the fireproof panel 62 in FIGS. 11 and 12 is appropriately selected according to the required heat insulation performance and fireproof performance. In addition, if the thickness of the rock wool layer 64 in FIG. 13 is about 25 to 80 mm on one side, it is preferable that the fire-resistant panel 62 can be made thin after obtaining good fire resistance. For polyurethane foam, phenol foam, and isocyanurate foam as the intermediate layer 65, a foam plate conventionally used as a wall material or a constituent member of the wall material is preferably used, and the thickness thereof depends on the required heat insulation. Is selected.

  The fireproof panel 62 used in the present invention preferably satisfies the 1 hour fireproof standard of the non-bearing wall of the outer wall. Specifically, it complies with the provisions of Building Standard Act Article 2-7 and Article 107 No. 2 and 3 (External Wall (Non-bearing Wall): 1 hour each). In addition, in the first outer wall structure, the one hour fireproof sprayed rock wool coated outer wall of the Minister of Land, Infrastructure, Transport and Tourism certification number FP060NE-9305, which is cited as a preferable inner wall material, also satisfies the one hour fire resistance standard.

  Also in the present invention, as in the first outer wall structure, as shown in FIGS. 14 and 15, the fireproof panel 62 attached to the upper side of the floor slab 4 is attached to the lower side of the floor slab 4. The polyurethane foam is continuous over the upper part of the fireproof panel 62 and covers the end of the floor slab 4, the attachment side of the bracket 22 to at least the end of the floor slab 4, and a part of the metal plate 63 of the heat-resistant panel 62. It is preferable to improve the heat insulating property around the end portion of the concrete floor slab 4 and the bracket 22 by providing the external heat insulating layer 41 made of FIG. 15 is a horizontal sectional view of the outer wall structure of this example, which is an L-L ′ sectional view of FIG. 14, and FIG. 14 is an end view of the M-M ′ cutting portion of FIG. 15.

  Further, in the present invention, as in the first outer wall structure, as shown in FIG. 16, the outer heat insulating layer 41 is covered with a moisture-proof coating 51 to protect the outer heat insulating layer 41 from moisture and water. preferable. The moisture-proof coating 51 is formed up to the metal plate 63 of the fireproof panel 62 and completely covers the external heat insulating layer 41.

  Furthermore, in the present invention, similarly to the first outer wall structure, the floor heat insulating material 2 and then the lowest floor slab 3 are arranged on the foundation 1, and the fireproof panel 62 as the inner wall material is provided as the floor heat insulating material. 2 and the floor slab 3 on the lowest floor surround the periphery of the floor 1 and are placed on the foundation 1, so that the rising insulation rising from the periphery of the floor insulation 2 is placed like a conventional concrete fireproof outer wall. There is no need to do so, and the floor area can be increased.

  In the second outer wall structure, the fireproof panels 62 are attached to the top and bottom of the floor slab 4 in the same manner as the heat insulating panel 12 in the first outer wall structure, and then the bracket 22 is necessary as in the first outer wall structure. Accordingly, the vertical trunk edge 24 or the horizontal trunk edge 25 to which the vertical trunk edge 24 or the attachment plate 27 is attached can be attached, and the exterior material 21 can be attached. Since this outer wall structure is also made of non-concrete, complicated work such as placing concrete and attaching heavy concrete panels is unnecessary, and the work is easy and can be performed in a short period of time.

  1: Foundation, 2: Floor heat insulating material, 3, 4: Floor slab, 11: Inner wall material, 12: Heat insulating panel, 13, 53: Metal plate, 14, 54: Heat insulating material, 15: Rock wool layer, 21: Exterior Material: 22: Bracket, 23: Insulation packing, 24: Vertical trunk edge, 25: Horizontal trunk edge, 26: Mounting bracket, 27: Mounting plate, 31: Angle, 32: Drainage bracket, 41: External heat insulating layer, 42: Moisture-proof member: 42a: cover piece, 42b: attachment piece, 42c: connection piece, 51: moisture-proof coating, 52: heat-insulating member, 55: heat-insulating filler, 62: fireproof panel, 63: metal plate, 64: rock wool Layer, 65: Intermediate layer

Claims (18)

The outer wall structure of a multi-storey freezer / refrigerated warehouse having at least an outer wall structure having an exterior material and an inner wall material, and a concrete floor slab separating the upper and lower floors,
The inner wall material has a heat insulating panel sandwiched between two metal plates and attached to the upper and lower sides of the floor slab, and a rock wool layer covering at least the outdoor surface of the heat insulating panel. And
An outer wall of a freezer / refrigerated warehouse, wherein a space is formed between the exterior material and the rock wool layer by attaching the exterior material to a bracket protruding from an end of the floor slab. Construction.   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 1, wherein the heat insulating material is isocyanurate foam.   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 1 or 2, wherein the rock wool layer is sprayed rock wool.   From the lower part of the thermal insulation panel attached above the floor slab to the upper part of the thermal insulation panel attached below the floor slab, the attachment side of the bracket to at least the end of the floor slab; The outer wall structure of a refrigeration / refrigeration warehouse according to any one of claims 1 to 3, further comprising an external heat insulating layer made of polyurethane foam covering a part of the rock wool layer.   The rock wool layer is provided in a region covered with the external heat insulating layer at a lower part of the heat insulating panel attached above the floor slab and an upper part of the heat insulating panel attached below the floor slab. 5. The outer wall structure of a refrigerated / refrigerated warehouse according to claim 4, further comprising a moisture-proof member that is vertically divided.   The moisture-proof member includes an attachment piece attached to the heat insulating panel, a cover piece that covers the surface of the rock wool layer in parallel with the attachment piece, connects the attachment piece and the cover piece, and moves the rock wool layer up and down. The outer wall structure of a refrigeration / refrigeration warehouse according to claim 5, wherein the outer wall structure has a substantially Z-shaped cross section.   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 6, wherein the outer heat insulating layer partially covers at least the cover piece.   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 5, further comprising a moisture-proof coating film covering at least the external heat insulating layer.   The refrigeration according to claim 8, wherein the moisture-proof coating film extends to the rock wool layer exposed above and below the outer heat insulating layer and partially covers the rock wool layer.・ Outer wall structure of refrigerated warehouse.   Between the lower part of the heat insulation panel attached above the floor slab and the upper part of the heat insulation panel attached below the floor slab, on the outdoor side of the heat insulation panel, heat insulation is provided between two metal plates. A heat insulating member consisting of a second heat insulating panel sandwiched is disposed continuously to an exposed surface on the outdoor side of the heat insulating panel disposed above and below the floor slab and an exposed surface on the outdoor side of the heat insulating member, The outer wall structure of a refrigerated / refrigerated warehouse according to any one of claims 1 to 3, wherein a rock wool layer is disposed.   11. The outer wall structure of a refrigeration / refrigeration warehouse according to claim 10, wherein a cross section of the heat insulating member is substantially U-shaped, and the metal plate is provided outside and inside of the approximately U-shape.   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 10 or 11, wherein polyurethane foam is filled between the heat insulating member and the bracket.   On the foundation of the freezer / refrigerated warehouse, a floor insulation, and then a floor slab on the lowermost floor are disposed, and the inner wall material surrounds a periphery of the floor insulation and the floor slab on the lowermost floor, The external structure of the refrigeration / refrigeration warehouse according to any one of claims 1 to 12, wherein The outer wall structure of a multi-storey freezer / refrigerated warehouse having at least an outer wall structure having an exterior material and an inner wall material, and a concrete floor slab separating the upper and lower floors,
The inner wall material has two metal plates and a rock wool layer sandwiched between the two metal plates, and is a fireproof panel attached to the top and bottom of the floor slab,
An outer wall structure of a refrigeration / refrigeration warehouse, wherein a space is formed between the exterior material and the fireproof panel by attaching the exterior material to a bracket protruding from an end of the floor slab. . The outer wall structure of a multi-storey freezer / refrigerated warehouse having at least an outer wall structure having an exterior material and an inner wall material, and a concrete floor slab separating the upper and lower floors,
The inner wall material includes two metal plates, two rock wool layers disposed inside the two metal plates, and a polyurethane foam, a phenol foam, an isocyanate sandwiched between the two rock wool layers. An intermediate layer made of any of the nurate foam, and a fireproof panel attached to the top and bottom of the floor slab,
An outer wall structure of a refrigeration / refrigeration warehouse, wherein a space is formed between the exterior material and the fireproof panel by attaching the exterior material to a bracket protruding from an end of the floor slab. .   Continuous from the lower part of the refractory panel attached above the floor slab to the upper part of the refractory panel attached below the floor slab, the end of the floor slab, and at least the floor slab of the bracket 16. The outer wall structure of a refrigerated / refrigerated warehouse according to claim 14 or 15, further comprising an external heat insulating layer made of polyurethane foam covering an attachment side to an end and a part of a metal plate of the fireproof panel. .   The outer wall structure of a refrigerated / refrigerated warehouse according to claim 16, further comprising a moisture-proof coating film covering the outer heat insulating layer.   On the foundation of the freezer / refrigerated warehouse, a floor insulation, and then a floor slab on the lowermost floor are disposed, and the inner wall material surrounds a periphery of the floor insulation and the floor slab on the lowermost floor, The external structure of the refrigeration / refrigeration warehouse according to any one of claims 14 to 17, characterized in that the external structure is disposed in the refrigeration warehouse.

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