JPH0960250A - Repair structure of alc external wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a new exterior wall with new panels when a repair of an ALC exterior trail is to be made, and at the same time, reinforce the ALC exterior wall and the structural mass. SOLUTION: A reinforcing material E made from a thin metal sheet in the form of long band is fixed at the ends diagonally to an existing ALC exterior wall D using a fixture such as nails, when two pieces should constitute one pair and a plurality of pairs are installed so that the ends are driven into the structural mass A, and from above the reinforcement E a furring strip F consisting of a flat metal plate stretching long is arranged in the vertical direction and driven by the fixture in a place at least intersecting crosswise member B of the structural mass A. Joiners having an inverted T-section are arranged from above the furring strip F so that the same spacing up and down is generated as the working width of each panel H to be laid along the crosswise members B, and the panel H is installed on the joint 13 through the joiner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for repairing an existing outer wall made of an ALC member (lightweight cellular concrete) for construction and construction with a new outer wall, and more specifically, to an existing frame and existing outer wall. The present invention relates to a repaired structure in which a reinforcing material for improving the strength of a wall surface is arranged to improve the strength of a building and then a new outer wall made of a dry wall material is formed on the surface.

[0002]

2. Description of the Related Art Conventionally, as a structure for repairing an outer wall using an ALC member, all the existing outer walls that have become old are removed, and a new outer wall is formed on a wall base material such as an existing skeleton or furring strip. Alternatively, there is a structure in which a new outer wall is attached directly to an existing outer wall material or through a new furring strip or a waterproof sheet.

[0003]

However, in the above structure, the old ALC outer wall is replaced with a new outer wall, the new outer wall is formed on the damaged existing outer wall, or the existing outer wall is damaged. Only the technical idea of hiding the existing ALC outer wall, such as improving only the appearance,
The technical idea of reinforcing the existing frame of the old building or the existing ALC outer wall to improve the strength was not taken into consideration at all. For this reason, when repairing with a new outer wall, the structure is more burdened and weaker than before repairing, especially the earthquake resistance is extremely inferior, and the new outer wall may fall off due to the occurrence of an earthquake, etc. Damage to buildings, collapse of buildings, etc. could occur.

[0004]

In order to eliminate such a drawback, the present invention uses a pair of long ALC outer wall surfaces before repairing the existing ALC outer wall surfaces with a new outer wall. The reinforcing material made of a thin metal plate is arranged so that it intersects in an X shape on the wall surface and both ends are driven into the steel frame material that constitutes the body. After arranging the joiner in the longitudinal direction and arranging the joiner with an inverted T-shaped cross-section from the top of the jacket along the cross member with a space equal to the working width of the sandwich panel that becomes the new outer wall, join the joiner. By installing a sandwich panel with matching locking parts, we propose a refurbished structure of the ALC outer wall that improves strength at the same time as renovation, has excellent earthquake resistance and fire resistance, firmly fixes the new outer wall, and is excellent in aesthetics. To do.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a repair structure for an ALC outer wall according to the present invention will be described in detail below with reference to the drawings. Figure 1,
FIG. 2 is an explanatory view showing a typical example of the above-mentioned ALC outer wall repair structure, in which A is a skeleton, is composed of a horizontal member B and a vertical member C, and is a base of a steel frame. D is the existing ALC outer wall (hereinafter,
The end is referred to as an ALC outer wall) and is fixed to the skeleton A by a fixing tool such as a nail, a tex, a screw screw, or a fixing metal fitting. E is a reinforcing material, F is a furring strip, G is a joiner, and H is a new sandwich panel.

The skeleton A is generally composed of a steel frame member, and is composed of a horizontal member B and a vertical member C, and H-type steel material, square steel material, C-type steel material and the like of Δp and Δq, respectively. It is formed with a pitch.

The ALC outer wall D is directly attached to the skeleton A, and is fixed to the cross member B here by a fixture not shown. Of course, the caulking material is embedded in the joint portion, or the surface thereof is covered with a makeup covering member (paint or the like).

As shown in FIG. 3, the reinforcing member E is made of a narrow and long thin plate-shaped steel material, various metal thin plates such as color steel plate, aluminum steel plate or the like, a composite of these, or a metal strip such as fiber reinforced resin or the like. It is formed from a linear object or the like.

The reinforcing material E is arranged as shown in FIG. That is, one end of the reinforcing material E in the longitudinal direction is
The vertical member C is fixed at a position where the vertical member C intersects the horizontal member B by a fixing tool α such as a nail, a tex, or a screw screw, and the other end is fixed at a position where the vertical member C intersects the horizontal member B so as to prevent loosening. It is fixed by the tool α, and is used in a pair of two and arranged in an X shape, so that it has a function of brace for improving the strength and the earthquake resistance of the skeleton A and the ALC outer wall D.

As shown in FIG. 4, the furring strip F is made of a long metal flat plate and functions as a base for placing and fixing the joiner G and the sandwich panel H. It is provided along the constituting vertical members and is driven and fixed by a fixture. The furring strip F is provided from the vicinity of the base to the vicinity of the eaves, serves as a base for fixing the joiner G and the sandwich panel H, and also disperses the load due to the weight in a wide range, and when mounting the fixing tool α. It also serves as a guide for identifying the placement location.

Further, the furring edge F has a space between the ALC outer wall D and the sandwich panel H due to its thickness, functions as a flow passage for fresh air and the like, and is effective in preventing corrosion. Further, as the material of the furring strip F, a metal flat bar is used.

As shown in FIG. 5, the joiner G is composed of an elongated body having an inverted T-shaped cross section, and serves as a guide for attaching the sandwich panel H and for improving fire protection, and is fixed in a horizontal plane. It is composed of a piece 1 and a rising piece 2 that protrudes upward from the substantial center of the fixed piece 1. The material thereof is a metal plate formed by roll molding or extrusion molding. The fixing piece 1 is a flat surface portion on which a fixing tool α such as a nail is driven and fixed, and the rising piece 2 is interposed in a lateral joint portion where the sandwich panels H are joined to each other in the vertical direction. It also functions as a guide for, and is effective in improving fire resistance.

As shown in FIG. 2, the joiner G is fixed to the upper and lower end surfaces of the sandwich panel H with the rising pieces 2 interposed therebetween. By forming it on the back surface of the lateral joint portion, the joint portion is formed. In addition to improving the waterproofness and airtightness of the above, it is effective in improving fireproofness by blocking hot air from the outside in case of fire.

The sandwich panel H is as shown in FIGS. 6 (a) (front perspective view) and (b) (rear perspective view of FIG. 6 (a)), and the working width in the vertical direction is that of the joiners G. Is almost the same as the interval. That is, 3 is a surface material,
For example, surface treated steel plate, zinc / nickel alloy plated steel plate,
It is formed by press forming, roll forming or the like of a metal plate made of a kind of aluminum / zinc alloy plated steel plate, fluororesin coated steel plate, fluorovinyl laminated steel plate, stainless plate, aluminum plate, aluminum alloy plate, clad steel plate or the like. That is, the surface material 3 is a rectangular or rectangular decorative surface 4 and a side wall 5 formed by projecting the four side edges of the decorative surface 4 downward and at a right angle or with an inclination.
And the lower end of the side wall 5 is formed in a hat shape from a protruding piece 6 protruding outwardly in substantially parallel to the decorative surface 4. It is preferable that the four side walls 5 are continuous with each other as shown in the figure. This is to prevent leakage of the core material 10 when the synthetic resin foam or the like is discharged as the core material 10 to react with and foam, and to improve the design of the sandwich panel H. .

To further explain, the projecting piece 6 has cutouts 7 formed at a pair of diagonally opposite corners out of the four corners, and the two projecting pieces 8 form a stacking projection 8. And the projecting piece 9 for support. That is, the protruding piece 8 for polymerization is the sandwich panel H.
When the construction is carried out, the joints are doubled to the supporting projecting piece 9 and the polymerizing projecting piece 8 by overlapping and fixing on the supporting projecting piece 9 of the adjacent sandwich panel H to obtain waterproofness. Is something that can be done.

The cutout portion 7 is provided so as to make the superimposing protruding piece 8 and the supporting protruding piece 9 double in all joints, and the height difference between the superimposing protruding piece 8 and the supporting protruding piece 9 is high. It is useful for forming easily.

A core material 10 functions as a heat insulating material, a soundproofing material, and a fireproofing material. As the material, synthetic resin foam is mainly used. For example, polyurethane foam resin, phenol foam resin, and polyisocyanate. Resin polystyrene foam for nurate foam, and flame retardant,
It is made up of materials such as flame retardant aids added.

The backing material 11 covers the back surface of the core material 10 to form a sandwich panel H having a sandwich structure to improve the mechanical strength of the sandwich panel H and to have a function as a backing material, a fireproof material, a sound absorbing material and the like. The surface material 3 is made of the same material as that of the surface material 3, or is made of a sheet that is waterproofed or flame-retarded. In addition,
It is preferable that the back surface material 11 does not come into contact with the surface material 3 in order to prevent a thermal bridge with the surface material 3. Also, Δw, Δh
Is the width of the sandwich panel H, 600 mm, 90
It is 0 mm, 1200 mm, etc.

A method of constructing the ALC outer wall repair structure according to the present invention will be briefly described below. First, as shown in FIG. 7, both ends of the reinforcing material E are driven from the ALC outer wall D onto the skeleton A by the fixing tool α. At this time, the reinforcing members E are used in pairs and are arranged diagonally in a substantially X shape. It should be noted that, other than the end portion of the reinforcing member E, it can be fixed by driving with the fixing tool α at a position intersecting with the vertical member C.

Next, as shown in FIG. 8, the furring strips F are arranged on the reinforcing members E in parallel with the vertical members C, and are struck by the fixtures α at the positions intersecting the horizontal members B in the figure. It should be noted that by placing the fixing tool at a location where the furring strip F passes over the reinforcement E, the distance between the locations where the force acts on the reinforcement E can be shortened and the reinforcement can be further improved. it can.

Next, as shown in FIG. 9, a joiner G is driven and fixed from above the furring strip F in parallel with the cross member B. On this occasion,
The joiners G are arranged with an interval equal to the working width of the sandwich panel H in the vertical direction.

A sandwich panel H as shown in FIG. 6 is attached from the base toward the eaves. When the sandwich panel H is mounted on the outer wall of the ALC, the sandwich panel H ₁ is superposed so that the polymerization protruding piece 8 of the upper sandwich panel H ₂ is positioned on the surface side of the upper end portion of the lower sandwich panel H ₁ , and the polymerization protruding piece 8 is attached. It is placed on the cross member B from above by the fixture α via the ALC outer wall D.

The joint portion 13 formed between the upper and lower sandwich panels H ₁ and H ₂ is filled with the caulking material 12, and the fixture α is concealed by the caulking material 12.

The above description is one example of the repaired structure of the ALC outer wall according to the present invention, but a structure using the reinforcing material E as shown in FIGS. 10 to 11 can also be adopted.

That is, FIG. 10 (a) shows a reinforcing member E provided with tongue pieces 14 by folding back both ends in the width direction of a strip-shaped steel plate, and FIG. 10 (b) shows that both ends of the steel plate are folded back in mutually opposite directions. The reinforcing member E provided with the tongue piece 14 is a reinforcing member E provided with the tongue piece 14 at one end in the width direction by overlapping steel plates.

Further, FIG. 11 (a) shows a reinforcing member E having an arbitrary embossed surface on the surface of the steel plate, and FIG. 11 (b) shows a fixing portion 15 for folding the steel plate in the longitudinal direction and driving the fixing tool α. The reinforcing member E having improved strength at the fixing portion, (c) shows the fixing portion 15 formed by winding the same quality steel plate at both ends in the longitudinal direction of the steel plate to improve the strength at the portion where the fixing tool α is placed. Reinforcement material E, (d) shows a rib 16 consisting of continuous unevenness in parallel to the flow direction of the steel sheet, and a steel sheet having a shape corresponding to the shape of the main body is adhered to the end portion in the longitudinal direction. The reinforcing member E is provided with the fixing portion 15 to improve the strength of the place where the fixing tool α is driven. Each of the above reinforcing materials E is effective for further improving the strength of the ALC outer wall D and the skeleton A by improving the strength of the reinforcing material E itself or the driving strength.

Although not shown, a heat insulating board or a synthetic resin foam of in-situ foaming type was formed in the space between the ALC outer wall D and the sandwich panel H by the thickness of the furring strip F so as to spray the stock solution on site. By filling the heat insulating material made of a synthetic resin foam, it is possible to further enhance the heat insulating property, the sound insulating property, and the like, and to prevent the dew condensation on the reinforcing material E.

[0028]

As described above, the ALC according to the present invention
According to the repair structure of the outer wall, before the existing ALC outer wall surface is repaired with the new outer wall, a long reinforcing material is provided so as to connect the vertical members constituting the existing skeleton from the ALC outer wall surface to be repaired. Since the new sandwich panel was formed on the existing wall surface so as to cover the reinforcing material while being diagonally arranged and fixed to the body, the strength of the existing body can be improved, the strength of the body can be improved, and the outer wall can be repaired at the same time. The building is strong against both horizontal and vertical loads, and has a structure that is resistant to vibration such as earthquakes and external pressure such as typhoons. Since it is not necessary to dismantle the existing ALC outer wall, the number of construction steps can be omitted, the construction period can be greatly shortened, and there is no hindrance to living during construction. Since the new outer wall is formed on the existing ALC outer wall, the construction is easy and the cost can be saved. Existing A
It has a double wall structure consisting of an LC outer wall and a new sandwich panel, and has a structure that is rich in heat insulation, soundproofing and fireproofing. Reinforcement material is formed into an arbitrary shape, or processed and twisted,
If you use a long metal plate with less slack,
It becomes a strong reinforcement and the reinforcing material maintains a linear shape even during construction, so construction is extremely easy. There are features and effects such as.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a typical example of a repair structure for an ALC outer wall according to the present invention.

FIG. 2 is an explanatory diagram showing a typical example of a repair structure for an ALC outer wall according to the present invention.

FIG. 3 is an explanatory diagram showing an example of a reinforcing material used in the present invention.

FIG. 4 is an explanatory diagram showing an example of a furring strip used in the present invention.

FIG. 5 is an explanatory diagram showing an example of a joiner used in the present invention.

FIG. 6 is an explanatory diagram showing an example of a sandwich panel used in the present invention.

FIG. 7 is an explanatory diagram showing a construction example of the present invention.

FIG. 8 is an explanatory diagram showing a construction example of the present invention.

FIG. 9 is an explanatory diagram showing a construction example of the present invention.

FIG. 10 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 11 is an explanatory diagram showing another example of the reinforcing material used in the present invention.

[Explanation of symbols]

 α Fixture A Frame B Horizontal member C Vertical member D Existing ALC outer wall E Reinforcing material F Furring edge G Joiner H Sandwich panel 1 Fixing piece 2 Standing piece 3 Surface material 4 Decorative surface 5 Side wall 6 Projecting piece 7 Cutout 8 Polymerization Projecting piece 9 Supporting projecting piece 10 Core material 11 Back surface material 12 Caulking material 13 Joint portion 14 Tongue piece 15 Fixing portion 16 Rib

Claims (1)

[Claims] 1. In a structure for repairing an outer wall of a building having an ALC outer wall, a reinforcing member made of a long thin metal plate is fixed obliquely to an existing ALC outer wall and both ends thereof are fixed with fasteners such as nails. When arranging, two end portions are arranged so that they are driven into the aggregate constituting the skeleton, and the furring strip made of a long metal flat plate is arranged in the longitudinal direction from the reinforcing material. Placed with a fixture at the location where it intersects with the horizontal members of the frame,
A joiner having an inverted T-shaped cross section is arranged from above the furring strip so as to have a vertical interval substantially the same as the working width of the sandwich panel forming a new outer wall along the cross member, and the joiner is provided through the horizontal joint. , ALC outer wall refurbishment structure characterized by attaching a sandwich panel having a synthetic resin foam as a core material.