JPH08326270A - Exterior wall repairing construction - Google Patents

Abstract

PURPOSE: To increase the strength of a skeleton by arranging long strip belt reinforcing members of the existing wall surface to be repaired slantly to fix them to the skeleton and, at the same time, mounting new exterior walls of dry walling on the existing wall surface so as to cover reinforcing members. CONSTITUTION: Two long strip reinforcing members are crossly arranged on the existing exterior wall of mortar wall, etc., so as to make approximately 45 deg. on diagonal lines from four corners of the wall surface of a building. After temporary fixing is made with elastic bodies of the reinforcing members 2 and adhesive tapes, foundation D, 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 of metal siding material or ceramic industrial siding material are subsequently mounted to the skeleton A such as main post B, stut C, etc., with the anchorages. Accordingly, since the existing exterior wall is not required to be dismantled, a construction period can be greatly reduced.

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,
Further, the present invention proposes an outer wall repairing structure using a reinforcing material having a viscous elastic body and 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 a frame of an existing building, 1 is an existing outer wall, 2 is a reinforcing material, 3 is a new outer wall, 10 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.

As shown in FIGS. 1 (a) and 1 (b), one or more reinforcing members 2 are obliquely arranged on the surface of the existing outer wall from the base D to the eaves girder or girder E. Attached to at least the base D, the eaves girder or the girder E, which constitutes the skeleton A through the existing outer wall 1 surface, with a fixing tool α such as a nail, a screw screw, a tex, an anchor, or an anchor bolt,
It has a function of bracing for improving the strength of the old frame A and one surface of the existing outer wall. 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 member 2, as shown in FIG. 1, the reinforcing member 2 is disposed at an angle of about 45 degrees with respect to the base D, the eaves girder or the girder E, and is reinforced. It is preferable that the material 2 is arranged so that the ratio of the sides of the quadrangle L1 and the width L2 formed as a diagonal line 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 9
0 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 elastic body 4 and the adhesive tape 5 laid between the elastic bodies 4 are formed.

The elastic body 4 absorbs irregularities on the surface of the existing outer wall 1 and has a function of temporarily fixing the reinforcing material 2 by its adhesive force.
It is also effective for improving the reinforcing force, and is also effective for fixing the reinforcing material 2 on the existing outer wall 1 without slack.

The elastic body 4 is made of an elastic adhesive such as a hot melt adhesive, a synthetic rubber adhesive, a natural rubber adhesive, etc., and is reinforced on the construction site in advance by using a gun or roll on one side of the main body 3. Before transporting the material 2, or at the construction site, one surface of the main body 3 is coated with an arbitrary pattern. Of course, the construction is carried out within a time when the adhesive force of the elastic body 4 is effective, and the formation of the elastic body 4 is carried out at an appropriate time in consideration of the construction time.

The adhesive tape 5 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 for the base material 5a, and a room temperature pressure-sensitive adhesive type is used as the adhesive materials 5b and 5c. It is effective for fixing the reinforcing material 2 on the existing outer wall 1 without slack and improving the workability. The adhesive tape 5 has more stable adhesiveness than the elastic body 4 and is effective for surely performing temporary fixing, and the existing outer wall 1
Before transporting the reinforcement 2 to the construction site, or in combination with the elastic body 4 while leaving the release paper 5d on the surface of the side to be adhered to the existing outer wall 1 at the construction site in an arbitrary pattern. The peeling paper 5d is peeled off at the time of sticking and construction.

The new outer wall 6 is made of metal siding material, ceramic siding material, PVC extrusion siding material,
It is composed of a dry outer wall material such as an ALC panel, a tile, a metal panel, etc. In particular, as shown in FIG. 3, a surface material 7 made of a metal thin plate and a back surface material 8 made of a metal thin plate or a sheet-like material are synthesized. A metal siding material sandwiching a core material 9 made of a resin foam is lightweight and excellent in strength, is effective in improving the strength of the existing outer wall 1, and is preferable from the viewpoint of easy construction.

Further, as shown in FIG. 1, the new outer wall 6 is directly attached to the skeleton A directly from the reinforcing material 2 via the fixing tool α, and has a large outer surface of the building, and is designed, heat-insulating and sound-proof. 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 10, such as a joiner, a projecting corner, and a entering corner, is 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 with the elastic body 4 and the adhesive tape 5, the base D, the eaves girder or the girder E are connected respectively, and the strength of the existing frame A and the existing outer wall 1 surface is connected. Reinforce and improve. At that time, the length of the reinforcing member 2,
Mount so that the lateral length ratio is as close as possible to about 1: 1. In addition, at the time of temporary fixing, the reinforcement member 2 is attached to the existing outer wall 1.
It is even more effective if pressure is applied to the side.

Then, a new outer wall 6 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 repair structure according to the present invention, and the repair structure as shown in FIGS. 4 to 10 or members for repair 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 11 is interposed between the reinforcing member 2 and the new outer wall 6 to improve the waterproof performance. Further, in FIG. 5B, furring strips 12 serving as a mounting base of the new outer wall 6 are arranged between the reinforcing member 2 and the new outer wall 6 at an appropriate pitch, and the thickness of the furring strip 12 itself is used. In this example, an air cycle path is secured.

Further, FIG. 6A shows that the furring strip 1 is placed on the reinforcing material C.
2 are arranged at an appropriate pitch, a heat insulating layer 13 is formed between each furring strip 12, and the furring strip 12 is used as a mounting base.
Further, it is an example in which an air cycle passage for performing an air cycle is secured from the base portion to the eaves point portion, and the new outer wall 6 is formed on the furring strip 12.

That is, the heat insulating layer 13 is intended to improve the heat insulating performance and airtightness of the entire structure and to prevent 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 13 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 13. Since the surface is made flat, a new outer wall 6 described later
The construction is easy and the raised surface is flat.

The heat insulating layer 13 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 13 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 a step due to the thickness of the reinforcing material 2, and furthermore, it is possible to blow and foam even 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 6 is formed after a plate 14 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.

7A to 7D to 9A to 9D.
7A is a modified example of the reinforcing member 2. FIG. 7A shows an example in which elastic bodies 4 are arranged at both ends of the main body 3 in the longitudinal direction, and short adhesive tapes 5 are arranged between the elastic bodies 4 at predetermined intervals. , (B) shows an example in which the adhesive tape 5 is arranged substantially at the center of the main body 3, and elastic bodies 4 are arranged at intervals at both ends, and (c) shows the elastic body 4 arranged at substantially the center of the main body 3. In addition, an example in which the adhesive tapes 5 are arranged at both ends, and (d) is an example in which the adhesive tapes 5 are arranged at both ends in addition to the elastic body 4 arranged at a substantially center of the main body 3 with a space.

Further, FIG. 8 (a) shows an example in which elastic bodies 4 and adhesive tapes 5 are alternately arranged so as to cross the width direction of the main body 3,
(B) shows an example in which the elastic body 4 and the adhesive tape 5 are arranged so as to meander and intersect each other, and (c) shows the elastic body 4 arranged in substantially the center and the short adhesive tapes 5 are arranged at both ends. An example in which the main body 3 is provided with a layer of the elastic body 4 on one surface of the main body 3 and the adhesive tape 5 is placed on the layer.

Further, FIGS. 9 (a) to 9 (d) are explanatory views of an example in which the elastic body 4 is arranged on the entire surface of the main body 3 in contact with the existing outer wall 1 as seen from the surface side, and FIG. 9 (a) is the main body. The reinforcing member 2, in which unevenness extending in the longitudinal direction of the main body 3 is provided to improve the adhesiveness between the main body 3 and the elastic body 4, (b) folds both ends of the main body 3 to the elastic body 4 side, and The reinforcing material 2 (c) having improved adhesiveness and strength of the main body 3 has the both ends of the main body 3 folded back to the surface side to prevent deformation of the main body 3 and the reinforcing material 2 (d) having improved strength. This is an example of the reinforcing member 2 in which the main body 3 is embossed in an arbitrary pattern to improve the strength of the main body 3 and the adhesion between the main body 3 and the elastic body 4. In FIGS. 9A to 9D, the adhesive tape 5 is arranged on the layered elastic body 4 in an arbitrary pattern. Forming the main body 3 as shown in FIGS. 9A to 9D is also effective in preventing loosening during construction. Also, FIG.
When applying the layered elastic body 4 as shown in (d) and FIGS. 9A to 9D, it is possible to use a roll.

10 (a) to 10 (f) show another example of the dry type wall material used for the new outer wall D.
(A)-(c) shows a metal siding material, FIG.10 (d) shows a vinyl chloride siding material, FIG.10 (e), (f) shows the cross-sectional shape of a ceramic siding material.

[0030]

According to the outer wall repairing structure of the present invention as described above, 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, in order to connect the girders, a long reinforcing material is obliquely arranged and fixed to the body, and a new outer wall is formed on the existing wall surface so as to cover the reinforcing material, so the strength of the existing body is 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 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. The reinforcing material has a viscous elastic body and an adhesive tape on the back surface, so it can be easily temporarily fixed before placing it with a fixture, and the minute irregularities on the existing outer wall are within the effective range of its elasticity. It is effective for strong reinforcement because it can be absorbed and the reinforcement can be prevented from loosening. 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 reinforcing material used in the present invention.

FIG. 10 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 column C Pillar D Base D E Beam girder F Foundation G Grubber 1 Existing outer wall 2 Reinforcement material 3 Main body 4 Elastic body 5 Adhesive tape 5a Base material 5b Adhesive material 5c Adhesive material 5d Release paper 6 New outer wall 7 Surface material 8 Back material 9 Core material 10 Accessory 11 Waterproof sheet 12 Furring strip 13 Thermal insulation layer 14 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-shaped reinforcement 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. 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 by diagonally disposing the material, and the reinforcing material is a surface on the side in contact with the existing outer wall. An outer wall repair structure characterized in that it has an elastic body having an adhesive force and an adhesive tape at an arbitrary position of.