JP3616964B2 - Exterior insulation method for steel buildings using composite panels - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulation method for a steel structure building using a composite panel formed by laminating a cement board and foamed foam.
[0002]
[Prior art]
In order to insulate a building, a heat insulating material is attached to the wall surface. In steel structure buildings, as a method of attaching a heat insulating material to a wall surface, a method of filling a cavity between an outer wall and an inner wall with a heat insulating material such as heat insulating wool, a so-called inner heat insulating method is generally used. In the internal heat insulation method for steel frame buildings, there is a drawback that the heat insulation effect is lowered due to incomplete filling of the heat insulation material, the heat insulation material cannot be retrofitted, and the work is troublesome. On the other hand, when the wall surface is solid like a concrete wall and there is no cavity for filling the heat insulating material inside, a method of directly attaching the heat insulating material to the inside or the outside of the wall surface is used. .
[0003]
The heat insulation method for directly attaching the heat insulating material to the wall surface as described above is nailing the heat insulating material to the wall surface, and it is necessary to perform nailing at a number of locations in order to ensure sufficient attachment strength. Therefore, the heat insulation construction method can only be applied to a reinforced concrete building whose entire wall surface is solid and can be nailed in any place.
[0004]
[Problems to be solved by the invention]
By the way, the outer heat insulating method for attaching the heat insulating material to the outside of the wall surface has a great advantage in terms of ease of work and shortening of work time. Therefore, the development of an outer heat insulation method that can be applied to other than reinforced concrete buildings is expected.
[0005]
The present invention has been made in view of the above-described problems, and its purpose is to install a heat insulating material from the outside of a wall surface in a steel structure building to which an external heat insulating method could not be applied conventionally. It is in providing the construction method which insulates.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, an outer heat insulating method for a steel structure according to claim 1 of the present invention is such that a composite panel formed by laminating a cement board and foamed foam is disposed on the outside. In addition, it is an outer heat insulation construction method for a steel structure that is attached to the structural member of the steel structure from the outside,
A reinforcing material is attached to an existing outer wall, and the foamed foam is cut into a shape suitable for the reinforcing material, and then the reinforcing material is fitted into the cut portion, and the composite panel is fixed to the reinforcing material by screwing. It is characterized by that.
[0007]
In the present invention, the outer wall side of the composite panel is a foam foam that can be easily cut, and the foam foam can be cut with a tool such as a cutter so that the foam foam can be easily formed. By adapting the composite panel, it is possible to flexibly cope with the expansion of reinforcing materials and the joining of surfaces at corners.
[0008]
The outer heat insulating structure for a steel structure building according to claim 2 of the present invention is obtained by the outer heat insulating method for a steel structure building according to claim 1.
[0009]
In the present invention, the outer heat insulating method according to claim 1 can provide an outer heat insulating structure that is easy to work and can reduce the work time, and is particularly suitable for renovation of a steel structure building.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The structural member of the steel structure building to which the composite panel is attached in the present invention is, for example, a wall trunk edge, a steel column, or the like made of a light gauge, lightweight steel, an angle material or the like. Although the shape of the structural member changes variously, the composite panel can be fixed to any structural member in the outer heat insulation method of the present invention. In addition, before attaching a composite panel, it is preferable to give an anticorrosion process to the above-mentioned structural member.
[0011]
The bolting in the present invention is performed mainly using bolts and nuts. The dimension is about 5 mm in diameter for the bolt, and the length is changed by the thickness of the composite panel. Moreover, it is preferable that the bolt and nut are subjected to rust prevention treatment.
[0012]
Hereinafter, the outer heat insulation method of the present invention will be described in more detail with reference to the drawings. However, the present invention should not be construed as being limited to these specific examples.
[0013]
FIG. 1 is a partial cross-sectional view illustrating a state in which a composite panel 1 is attached to a wall trunk edge a made of a light gauge in the outer heat insulating method of the present invention.
In FIG. 1, a composite panel 1 formed by laminating a cement board 2 and foamed foam 3 is attached to a wall trunk edge a so that the cement board 2 is on the outside.
The cement board 2 can be manufactured by extrusion molding, for example, and the thickness is about 20-50 mm. The foamed foam 3 is a rigid polyurethane foam, a polystyrene foam, a phenol foam, a polyisocyanurate foam, a polyethylene foam, an epoxy foam or the like, and the thickness thereof is, for example, 15 to 50 mm. The composite panel 1 can be manufactured by sticking the cement plate 2 and the foamed foam 3 that are separately manufactured, or by foaming the resin directly on the cement plate 2 and molding the foamed foam 3.
[0014]
The composite panel 1 is attached to the wall trunk edge a with both nut bolts 4a threaded at both ends and two nuts 5 screwed to the bolts 4 from both the cement plate 2 side and the wall trunk edge a side. The laminated panel 1 is bolted to the wall trunk edge a. When attaching the nut 5 to both the nut bolts 4a, it is preferable to use a washer.
[0015]
The nut 5 on the cement board 2 side, that is, the outside of the building is accommodated in a hole drilled in the composite panel 1 and sealed with a sealing 6 formed by filling the hole with resin mortar or the like. Has been. By adopting such a structure, the head of the bolt is not exposed to the outside of the building, water intrusion from the bolting site and rusting of the bolt can be prevented, and the exterior of the building Will not be damaged.
[0016]
Further, FIG. 1 shows a joint portion between two composite panels 1. The composite panel 1 is joined by, for example, thinly applying a resin that forms a seal on the end surfaces of both composite panels 1 to be joined, and then affixing them to each other. Preferably, the cement plate 2 is cut in a certain range at the joint portion of both composite panels 1 to be joined, and the groove formed by the cutting is filled with the backup agent 7, and then the resin is the same as in the case of the bolt head. The sealing 6 is formed by filling mortar or the like.
[0017]
FIG. 2 is a partial cross-sectional view illustrating a state in which the composite panel 1 is attached to a wall trunk edge b made of an angle material in the outer heat insulating method of the present invention.
In FIG. 2, the composite panel 1 is bolted with hook bolts 4b. In the bolt fastening with the hook bolt 4b, the bent end of the hook bolt 4b is hooked to the wall trunk edge b, and the nut 5 is screwed from the outside of the composite panel 1 to the other end having a screw cut. Is bolted.
[0018]
Moreover, the cement board 2 of the composite panel 1 illustrated in FIG. 2 has a cavity on the side in contact with the foamed foam 3. Such a cavity not only helps to reduce the weight of the composite panel 1 but also improves the heat insulation effect due to the presence of air in the cavity.
[0019]
FIG. 3 is a partial cross-sectional view illustrating a state in which the composite panel 1 is attached to the steel column c in the outer heat insulating method of the present invention.
In the column assembly at the steel column c, bolts 4 welded and fixed to one surface (upper surface in FIG. 3) of the steel column c are used, and one composite panel 1 (upper side in FIG. 3) is used. In order to bolt the other composite panel 1 (left side in FIG. 3), a hole for passing both nut bolts 4a is formed, and a nut receiving hole 8 for receiving the nut 5 is formed in the cement plate 2. Yes. When the composite panel 1 is attached, first, the composite panel 1 in which the nut accommodation hole 8 is formed is bolted to the other composite panel 1 after the foam foam 3 at the end thereof is partially cut away. Both nut bolts 4a and one nut 5 used in the above are attached and bolted to the steel column c with bolts 4 fixed by welding. Next, using both nut bolts 4 attached to the composite panel 1, the composite panel 1 in which a part of the foamed foam 3 is similarly cut is bolted to the steel column c. Finally, the back-up material 7 is filled in the gap between the two composite panels 1, and the sealing 6 is formed thereon.
[0020]
FIG. 4 is a partial cross-sectional view illustrating the state of the lowermost stage of attachment of the composite panel 1 to the steel column c in the outer heat insulation method of the present invention.
In the lowermost stage, a panel receiving member 9 made of an angle member is welded and fixed to the steel column c, and the composite panel 1 is placed thereon, and is bolted with a bolt 4 fixed by welding to the steel column c. The bolts are fixed to the steel column c by welding on the surface of the steel column c as shown in FIG. 3 or after the bolt is passed through the steel column as shown in FIG. May be. Sufficient mounting strength can be ensured by the panel receiving member 9 provided at the lowest stage.
[0021]
FIG. 5 is a partial cross-sectional view illustrating a state in which the composite panel 1 is attached to an opening of a steel structure building, mainly a window, in the outer heat insulating method of the present invention.
On the upper side of the opening of the building, the end on the opening side of the foamed foam 3 constituting the composite panel 1 is partly cut, and the composite panel 1 attaches both nut bolts 4a and nuts 5 to the upper light gauge d. It is bolted using. A window upper frame e is directly fixed to the upper light gauge d by welding, and a sealing 6 is formed between the window upper frame e and the cement plate 2.
[0022]
On the other hand, at the lower side of the opening of the building, the composite panel 1 is bolted to the lower light gauge d with both nut bolts 4a and nuts 5 like the upper side. On the light gauge d, a window lower frame g is fixed by welding via a sash anchor f, and a draining plate h that covers the upper end surface of the composite panel 1 from the lower surface of the window lower frame g is provided. The draining plate h projects outward from the composite panel 1, and the projecting portion is filled with a backup material 7, and a sealing 6 is formed on the lower surface thereof. A sealing 6 is also formed between the window lower frame g and the draining plate h. Further, glass wool i and hard urethane j are filled between the window lower frame g and the lower light gauge d to enhance the waterproof property.
[0023]
FIG. 6 is a partial cross-sectional view illustrating a state in which the composite panel 1 is attached to the renovation outer wall k of a steel structure building in the outer heat insulation method of the present invention.
In FIG. 6, the reinforcing material 10 is attached to the existing outer wall k of the reform, and the foamed foam 3 is cut into a shape suitable for the reinforcing material 10. 10 is screwed with a tapping screw 11. Since the foamed foam 3 of the composite panel 1 can be cut freely, the outer heat insulation method of the present invention can flexibly cope with the addition of a reinforcing material and the joining of surfaces at corners.
[0024]
【The invention's effect】
The outer heat insulation method for a steel structure building according to the present invention is excellent in heat insulation performance with a simple structure by attaching a composite panel formed by laminating a cement board and foamed foam to the structural member of the steel structure building from the outside. An outer insulation method can be provided. The outer heat insulation method of the present invention can be applied to any wall surface of a steel building by using an optimal mounting method according to various members constituting the steel building, and the work can be easily performed. Reduction of time can be achieved.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view illustrating a state in which a composite panel 1 is attached to a wall trunk edge a made of a light gauge in the outer heat insulation method of the present invention.
FIG. 2 is a partial cross-sectional view illustrating a state in which a composite panel 1 is attached to a wall trunk edge b made of an angle material in the outer heat insulating method of the present invention.
FIG. 3 is a partial cross-sectional view illustrating a state in which a composite panel 1 is attached to a steel column c in the outer heat insulation method of the present invention.
FIG. 4 is a partial cross-sectional view illustrating the state of the lowermost stage of attachment of the composite panel 1 to the steel column c in the outer heat insulation method according to the present invention.
FIG. 5 is a partial cross-sectional view illustrating a state in which the composite panel 1 is attached to an opening, mainly a window, of a steel structure building in the outer heat insulation method of the present invention.
FIG. 6 is a partial cross-sectional view illustrating a state in which a composite panel is attached to an outer wall of a steel building renovation in the outer heat insulation method of the present invention.
[Explanation of symbols]
1 Composite panel 2 Cement board 3 Foam foam 4 Bolt 5 Nut 6 Sealing 7 Backup agent

Claims (2)

It is an external heat insulation method for a steel building, in which a composite panel formed by laminating a cement board and foamed foam is attached to the structural member of the steel building from the outside so that the cement board is on the outside ,
A reinforcing material is attached to an existing outer wall, and the foamed foam is cut into a shape suitable for the reinforcing material, and then the reinforcing material is fitted into the cut portion, and the composite panel is fixed to the reinforcing material by screwing. An outside heat insulation method for steel structures. An outer heat insulating structure for a steel structure, obtained by the outer heat insulating method for a steel structure according to claim 1.

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