JPH08326269A - Exterior wall repairing construction - Google Patents

Abstract

PURPOSE: To reduce a construction period by arranging long reinforcing members slantly on the existing wall surface to be repaired to fix them on a skeleton, forming a new exterior wall of a dry walling material on the existing wall surface so as to cover the reinforcing members. CONSTITUTION: Two long strip reinforcing members 2 are crossed on diagonal lines from four corners of the wall surface of a building and are arranged on the existing exterior wall 1 of mortar wall, etc. After temporary fixing is made with adhesive tapes provided to the reinforcing members 2, foundation D and pole plate or gable beam E are connected to each other with anchorages to reinforce the existing skeleton A and the strength of the surface of the existing exterior wall 1. Then, New exterior walls 5 constituted of metal siding material or ceramic industrial siding material, etc., are subsequently mounted to the skeleton A such as main post B, stut C, etc. Accordingly, double wall construction is constituted of the existing exterior wall and new exterior walls and is excellent in heat insulation and soundproof properties.

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 surface of a building or a structure with a new outer wall, and more specifically, to improve the strength of an existing old skeleton body or existing outer wall surface. The present invention relates to a repair structure in which a new outer wall made of a dry wall material is formed on a surface after a reinforcing material is arranged to improve the strength of a building.

[0002]

2. Description of the Related Art Conventionally, this kind of outer wall repair has been performed by removing all the existing old outer walls and forming a new outer wall on a wall base material such as an existing skeleton or furring strip, or an existing outer wall. The structure in which a new outer wall is attached directly to the material or through a new furring strip or a waterproof sheet has been common.

[0003]

However, in such a repair, the old outer wall that has become old and the new outer wall are replaced, or the new outer wall is formed on the existing outer wall that has been damaged.
It is only the technical idea of hiding the existing outer wall, and the technical idea of reinforcing the existing frame of the old building or the existing outer wall to improve the strength has not been taken into consideration at all. For this reason, the structure of the building after the renovation is burdened, weak in strength, particularly inferior in seismic resistance, new outer walls fall off due to an earthquake, damage to the structure, collapse of the building, etc. Sometimes occurred.

[0004]

In order to eliminate such drawbacks, the present invention provides a foundation and eaves girders for constructing an existing frame on an existing wall surface to be repaired before repairing the existing outer wall surface with a new outer wall. Or, to connect the girders, a long reinforcing material is obliquely arranged and fixed to the body, and a new outer wall made of dry wall material is formed on the existing wall surface so as to cover the reinforcing material,
In addition, the present invention proposes an outer wall repair structure using a reinforcing material having an adhesive tape at an arbitrary position on the surface in contact with the existing outer wall.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the outer wall repair structure according to the present invention will be described in detail below with reference to the drawings. FIG. 1 (a),
(B) is explanatory drawing which shows an example of the said outer wall repair structure,
A is the skeleton of the existing building, 1 is the existing outer wall, 2 is a reinforcing material, 5 is a new outer wall, 9 is an accessory, and F is a foundation.

As shown in FIG. 1 (b), the skeleton A is a general one composed of a vertically extending main pillar B, a stud C, and a horizontally extending base D, eaves girder or girder E. Is. Of course, these are names of buildings having a wooden structure, and in a steel frame structure, H-shaped steel material, square steel material, C-shaped steel material, etc. are arranged at these positions. Note that, in FIG. 1B, the existing outer wall 1 is shown by a chain line for the sake of convenience.

The existing outer wall 1 is composed of a mortar wall which is constructed by arranging wood sludge, a waterproof sheet, a lath sheet and a mortar wall material in this order on the outer surface of the skeleton A, or
A furring strip is provided on the skeleton A, and is composed of a dry sheet material such as a waterproof sheet, a metal siding material, a ceramic siding material, an ALC panel, a tile, and a vinyl chloride extruded siding material.

The reinforcing material 2 is, as shown in FIG. 1, an existing outer wall 1
1 diagonally from the base D to the eaves girder or gable beam E on the surface
At least the base D, the eaves girder, or the girder E constituting the skeleton A through one surface of the existing outer wall, which is arranged by more than one
In addition, it has a function of brace that is attached by a fixing tool α such as a nail, a screw screw, a tex, an anchor, and an anchor bolt to improve the strength of the old frame A and the existing outer wall 1 surface. When two or more reinforcing members 2 are provided, they are formed by crossing each other in a plow shape as shown in FIG.

Further, as a method of disposing the reinforcing material 2, FIG.
As shown in (a) and (b), a quadrangular shape that is arranged in the vicinity of an angle of θ1 = about 45 degrees with respect to the base D, eaves girder, or girder E, and is formed with the reinforcing member 2 as a diagonal line. Vertical L
It is preferable that the ratio of the sides of 1 and the width L2 is L1: L2 = about 1: 1. This is because the reinforcement member 2 exhibits the most function as a brace by making the height and width ratios substantially the same, and the strength of the skeleton A can be improved most. In addition, in FIG. 1B, the angle of θ2 is 90 degrees. Further, since the reinforcing material 2 is arranged from above the existing outer wall 1, it can be easily arranged without being obstructed by the main pillars B and the studs C existing therebetween.

As shown in FIGS. 2 (a) and 2 (b), the reinforcing member 2 is made of, for example, a narrow and long thin plate-shaped steel material, various metal thin plates such as a color steel plate and an aluminum steel plate, or a composite of these. Alternatively, the main body 3 made of a metal strip or linear material such as a fiber-reinforced resin and the surface of the main body 3 on the side in contact with the existing outer wall 1 are provided in a band shape in close contact with each other, for example, on both sides in the longitudinal direction. The adhesive tape 4 is formed.

The adhesive tape 4 has a certain degree of thickness and elasticity and has adhesive surfaces on both sides, and its construction is shown in FIG. 2 (b).
As shown in. That is, a flexible and tough acrylic foam is used as the base material 4a, and a room temperature pressure-sensitive adhesive type is used as the adhesive materials 4b and 4c. It has the function of temporary fixing, and is effective for fixing the reinforcing material 2 on the existing outer wall 1 without slack to improve the strength and to improve the workability. The adhesive tape 4 has an arbitrary pattern in advance on the side in contact with the existing outer wall 1, before transporting the reinforcing material 2 to the construction site, or while leaving the release paper 4d on the surface on the side bonded to the existing outer wall 1 at the construction site. The peeling paper 4d is peeled off when the tape is attached and the construction is performed.

The new outer wall 5 is made of metal siding material, ceramic siding material, PVC extrusion siding material,
It is composed of a dry type outer wall material such as an ALC panel, a tile, a metal panel, etc. In particular, as shown in FIG. 3, a surface material 6 made of a metal thin plate and a back material 7 made of a metal thin plate or a sheet-like material are composed. A metal siding material sandwiching a core material 8 made of a resin foam is lightweight and has excellent strength, is effective for improving the strength of the existing outer wall 1, and is also preferable from the viewpoint of easy construction.

Further, as shown in FIG. 1, the new outer wall 5 is directly attached on the reinforcing member 2 directly to the skeleton A through the fixing tool α, and has a large outer surface of the building, and has good design, heat insulation, and sound insulation. In addition, the fireproof property is further improved. Of course, when forming the new outer wall 2, a drainer, a starter, a toe,
The accessory 9 such as a joiner, a projecting corner, and a entering corner are arranged as necessary.

Next, a method of constructing the outer wall repair structure according to the present invention will be briefly described. First, as shown in FIG.
On the existing outer wall 1 such as a mortar wall, two strip-shaped reinforcing members 2 as shown in FIG. 2 are peeled off, and the release paper is peeled off so that the angle from the four corners of the wall surface of the building is about 45 degrees diagonally. After that, they are crossed and arranged, and after temporarily fixed by the adhesive tape 4, the base D, the eaves girder or the girder E are connected to each other, and the strength of the existing frame A and the existing outer wall 1 surface is reinforced, Improve. At that time, the reinforcing member 2 is attached so that the ratio of the length to the length of the reinforcing member 2 is as close as possible to about 1: 1.
In addition, at the time of temporary fixing, it is more effective if the reinforcing material 2 is pressed against the existing outer wall 1 side.

Then, a new outer wall 5 made of a metal siding material as shown in FIG. 3 is sequentially attached from above the reinforcing material 2 to the skeleton A such as the main pillars B and studs C using a fixing tool α such as a nail, It is to be constructed.

What has been described above is one embodiment of the outer wall repairing structure according to the present invention, and the repairing structure as shown in FIGS. 4 to 9 can be used, or members for repairing can be used.

That is, FIG. 4 shows an example when the building has two or more floors. When the building has two or more floors, a girder G is provided between the base D and the eaves girder or gable beam E. It is an example which shows the structure of the skeleton A which intervenes. In that case, other than the one shown in the drawing, the body insert G, the base D and the eaves girder or the girder E may be connected by the reinforcing member 2. In the figure, the existing outer wall 1 is shown by a dashed line for convenience.

FIG. 5A shows an example in which a waterproof sheet 10 is interposed between the reinforcing material 2 and the new outer wall 5 to improve the waterproof performance. Further, in FIG. 5B, furring strips 11 serving as a mounting base of the new outer wall 5 are arranged at an appropriate pitch between the reinforcing material 2 and the new outer wall 5, and the thickness of the furring strip 11 itself is used. In this example, an air cycle path is secured.

Further, FIG. 6A shows that the furring material 9 is placed on the reinforcing material C.
The heat insulating layer 12 is formed between the furring strips 11 at appropriate pitches, and the furring strips 11 are used as a mounting base, and an air cycle passage for performing an air cycle from the base portion to the eaves point portion is secured. However, in this example, the new outer wall 5 is formed on the furring strip 11.

That is, the heat insulating layer 12 improves the heat insulating performance and airtightness of the entire structure and prevents the occurrence of dew condensation due to the temperature difference when the reinforcing material 2 is made of metal. Further, since the heat insulating layer 12 has a step with the surface of the existing outer wall 1 due to the thickness of the reinforcing material 2 itself or the overlapping of the reinforcing materials 2, the step is eliminated by disposing the heat insulating layer 12. Since the surface is flat, a new outer wall 5 to be described later
The construction is easy and the raised surface is flat.

The heat insulating layer 12 is formed of polyurethane, for example.
It may also be formed by sequentially laminating synthetic resin foam such as polyisocyanurate, phenol, vinyl chloride, polyethylene, polystyrene, and board-shaped panels such as gypsum board, rock wool board, glass fiber, and inorganic material board such as sheathing board. However, it is particularly preferable to use an on-site blown foam type synthetic resin.

That is, when the heat insulating layer 12 is made of in-situ blown foam type synthetic resin, the material thereof is hard urethane foam, or flame retardant class 2 or class 3 (JIS-A).
-1321) Phenol + isocyanate + difficult-to-twist material of acceptable product can also be used. Of course, a non-CFC synthetic resin is used, and flame retardant is achieved with phenol. In addition, since the heat insulating layer H is made of in-situ blown foam type synthetic resin, it is possible to easily eliminate the step due to the thickness of the reinforcing material 2, and furthermore, it is possible to blow and foam even in a narrow place or an end portion. Further airtightness and heat insulation can be achieved, and the construction is easy and the cost can be reduced.

FIG. 6 (b) shows how to fix the tip of the reinforcing member 2,
This is an example in which a new outer wall 5 is formed after a plate 13 made of a short steel plate or the like is driven through a fixture α to make the fixing of the reinforcing material 2 stronger.

7 (a)-(d) -FIG. 8 (a)-(d)
7A is a modified example of the reinforcing member 2. FIG. 7A is a reinforcing member 2 in which adhesive tapes 4 are arranged in three strips in parallel with the longitudinal direction of the main body 3, and FIG. In addition to the reinforcing material 2 in which the adhesive tape 4 is arranged in a strip shape having a space at both ends in the direction, (c), the adhesive tape 4 is arranged in a continuous strip shape in the center of the main body 3,
(D) shows an example of the reinforcing material 2 in which the adhesive tape is arranged in a wavy shape.

Further, FIG. 8 (a) shows the reinforcing material 2 in which the adhesive tape 4 is arranged so as to cross the width direction of the main body 3, and FIG. 8 (b) is arranged so that the adhesive tape 4 crosses over the main body 3. The reinforcing material 2, (c) is the reinforcing material 2 in which the adhesive tape 4 is concentrated on a specific portion of the main body 3, and (d) is the reinforcing material 2 in which the adhesive tape 4 is arranged over the entire main body 3. In addition, although not shown, by arranging the adhesive tape 4 after the main body 3 is formed into an arbitrary shape, it is possible to improve the strength of the main body 3 against twisting and elongation, and also improve the adhesion with the adhesive tape 4. Is something that can be done.

9 (a) to 9 (f) show other examples of the dry type wall material used for the new outer wall D.
9A to 9C show cross-sectional shapes of a metal siding material, FIG. 9D shows a vinyl chloride siding material, and FIGS. 9E and 9F show a ceramic siding material.

[0027]

As described above, according to the outer wall repairing structure of the present invention, before the existing outer wall surface is repaired with the new outer wall, the foundation and the eaves girder constituting the existing frame from the existing wall surface to be repaired. Or, to connect the girders, a long reinforcing material is diagonally arranged and fixed to the body, and a new outer wall is formed on the existing wall surface to cover the reinforcing material, improving the strength of the existing body, 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 strong against vibrations such as earthquakes and external pressure such as typhoons.
Since it is not necessary to dismantle the existing 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 outer wall, the construction is easy and the cost can be saved. It has a double wall structure consisting of an existing outer wall and a new outer wall, and has a structure with excellent heat insulation, soundproofing, and fireproofing. Since the reinforcing material has an adhesive tape on the back surface, it can be easily temporarily fixed before being placed with a fixture, and minute irregularities on the existing outer wall can be absorbed within the effective range of its elasticity. Since it can prevent slack, it is effective as a strong reinforcement. There are characteristics and effects.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a typical example of an outer wall repairing structure according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a reinforcing material used in the present invention.

FIG. 3 is an explanatory view showing an example of a novel outer wall used in the present invention.

FIG. 4 is an explanatory view showing another example of the outer wall repairing structure according to the present invention.

FIG. 5 is an explanatory view showing another example of the outer wall repairing structure according to the present invention.

FIG. 6 is an explanatory diagram showing another example of the outer wall repair structure according to the present invention.

FIG. 7 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 8 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 9 is an explanatory view showing another example of the novel outer wall used in the present invention.

[Explanation of symbols]

 α Fixture A Frame B Main pillar C Gambling D Foundation E Eaves girder or gable beam F Foundation G Grim 1 Existing outer wall 2 Reinforcing material 3 Main body 4 Adhesive tape 4a Base material 4b Adhesive 4c Adhesive 4d Release paper 5 New exterior wall 6 Surface material 7 Back surface material 8 Core material 9 Accessory 10 Waterproof sheet 11 Furring strip 12 Thermal insulation layer 13 Plate

Claims (1)

[Claims] 1. In a structure in which an existing wall surface of a building or a structure is renovated with a new wall material, a long reinforcing material is provided so as to connect the foundation constituting the existing skeleton to the eaves girder or gable beam on the existing wall surface to be renovated. Is installed diagonally and fixed to the body,
It is a structure in which a new outer wall made of a dry wall material is formed on an existing wall surface so as to cover the reinforcing material, and the reinforcing material has an adhesive tape at an arbitrary position on a surface in contact with the existing outer wall. Repair structure.