JPH094176A - External wall repairing structure - Google Patents

Abstract

PURPOSE: To perform reinforcement of a building frame and repair of external wall simultaneously by coupling together vertical and horizontal frames diagonally by a long steel plate from over the existing external wall, allowing them to intersect each other followed by securing, and affixing a new dry type exterior wall material from the upper side thereof. CONSTITUTION: On the external wall of an old building frame A, a plurality of reinforcing members 2 consisting of long steel plate etc., are installed between vertical members B such as main column or stud and horizontal members E, G such as gable beam or girth in such a way as intersecting aslant followed by securing. Thereon a new, dry type exterior wall material 3 is affixed in such a fashion that the reinforcing members 2 are not exposed, and thereby the external wall of the building frame A is accomplished. This allows enhancement of the aseismatic strength of the building frame A without pull-down of the existing external wall, and repair of the external wall can be performed in a short time. Thus it is practicable to make reinforcement and repair of the building frame A at a low cost.

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 building of the renovated building is subject to a burden, which is weak in strength, especially extremely inferior in seismic resistance. Sometimes occurred.

[0004]

SUMMARY OF THE INVENTION In order to eliminate such drawbacks, the present invention provides a foundation and a gable beam or a body forming an existing frame on an existing outer wall before repairing the existing outer wall with a new outer wall. The main pillar is the base, the first set of reinforcements made of long steel plates used in pairs to connect the inserts diagonally.
Upper and lower ends of the main pillar, that is, the main pillar, where the girder or the crossing with the girder is arranged as a fixed point so as to intersect at the midpoint of the main pillar, and then the intersection of the first set of reinforcements Place the second set of reinforcements at the midpoint of the main pillar with the first set of reinforcements as the fixed point, with the base crossing the girder, or girder as the fixed point. The present invention proposes an outer wall repairing structure in which a new outer wall made of dry wall material is formed on an existing outer wall so as to cover the reinforcing material while being fixed to the body.

[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, 7 is an accessory, F is a foundation, and α is a fixture such as a nail, a screw screw, a tex, an anchor, or an anchor bolt. .

As shown in FIG. 1B, the skeleton A is composed of a vertically extending main pillar B, a stud C, and a horizontally extending base D, gable E or girder G, and foundation F. It is general. Of course, these are names in a wooden structure, and in a steel structure, H-shaped steel, square steel, C-shaped steel, and the like are arranged at these positions. Note that, in FIG. 1B, the existing outer wall 1 is shown by a dotted line and omitted for 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 body edge is provided on the skeleton A, a waterproof sheet, a metal siding material, a ceramic siding material, an ALC panel, a tile,
It is made of a dry wall material such as a PVC extruded siding material.

As shown in FIG. 2, the reinforcing member 2 is made of various thin metal plates such as a narrow thin steel plate, a color steel plate, an aluminum steel plate, a composite of these, or a metal strip such as a fiber reinforced resin, or the like. It is formed from a linear object or the like.

The reinforcing material 2 is disposed as shown in FIG. 1 (b). That is, one end in the longitudinal direction of the reinforcing member 2 is fixed to the location where the main pillar B is connected to the base D by a fixture α, and the other end is fixed to the location where the main pillar B is connected to the girder E or the girder G. It is fixed by a tool α and straddles at least one main pillar B. Two reinforcing members 2 are used by crossing each other in a plow shape, and each of the pair of reinforcing members 2 has its intersection on the main pillar B.
It has a function of brace to improve the strength of the old frame A and the existing outer wall 1 surface.

The new outer wall 3 is made of a metal type siding material or a dry type outer wall material made of ceramic siding material, vinyl chloride extruded siding material, ALC panel, tile, metal type panel, etc., and is particularly shown in FIG. Such a metal-based siding material in which a core material 6 made of a synthetic resin foam is sandwiched between a surface material 4 made of a thin metal plate and a back surface material 5 made of a thin metal plate or a sheet-like material is also lightweight and excellent in strength. It is also preferable in that it is effective for improving the strength of the outer wall 1 and is easy to construct.

As shown in FIG. 1 (a), the new outer wall 3 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, good design and heat insulation. ,
It further improves soundproofing and fireproofing. Of course, when forming the new outer wall 2, a drainer, a starter,
The accessory 7, such as a toe, a joiner, a projecting corner, and a entering corner, is arranged as necessary.

Here, a method of constructing the outer wall repair structure according to the present invention will be briefly described. First, as shown in FIG. 4A, the first set of reinforcing members 2a is arranged on the existing outer wall 1 made of a mortar wall or the like, and both ends thereof are driven and fixed to the skeleton A by the fixing tool α.

Next, as shown in FIG. 4 (b), from the top of the first set of reinforcements 2a, the second set of reinforcements is set near the upper and lower ends of the main body B where the first set of reinforcements 2a intersect. The reinforcing material 2b is placed, and is fixed and fixed to the skeleton A by the fixing tool α.

Then, a new outer wall 3 made of a metal-based siding material as shown in FIG.
By using a fixing tool α such as a nail on the skeleton A such as the main pillar B and the stud C,
It is sequentially mounted and finished as shown in FIG. The reinforcing members 2 need not be treated as a pair as long as they are finally arranged as shown in FIG. Further, the pair of reinforcing members 2 can be placed at the midpoint of the main pillar B at the intersection thereof by using the fixing tool α.

What has been described above is an embodiment of the outer wall repairing structure according to the present invention, and it is also possible to use a repairing structure as shown in FIGS. 5 to 11 or to use a member for repairing.

5 to 7 show modified examples of the reinforcing material 2. That is, in FIGS. 5A to 5D, the tongue pieces 8 continuous in the longitudinal direction are provided at both ends in the width direction to prevent loosening and twisting to improve the strength and reduce the shape change to facilitate the construction. It is an example of the reinforcing material 2 made into.

Further, FIG. 6 (a) is continuous in the longitudinal direction,
A reinforcing member 2 provided with uneven ribs 9 and fixing portions 10 formed by superimposing steel plates on both ends in the longitudinal direction to improve strength and workability and strengthen fixation, FIG. 6B. Is a reinforcing material 2 whose strength is improved by embossing the entire surface, and FIG. 6 (c) is a hot melt adhesive, a synthetic rubber adhesive, a natural rubber adhesive on the surface that contacts the existing outer wall 1. An elastic body 11 made of an elastic adhesive such as an adhesive is provided, and a reinforcing member 2 having a function of temporary fixing and unevenness absorption is provided. In FIG. 6 (d), ribs 9 continuous in the longitudinal direction are provided and one side surface is provided. Elastic body 1
It is a reinforcing material 2 provided with a layer composed of 1.

Further, FIGS. 7A and 7B show the existing outer wall 1
7 (c) and 7 (d), which has a pressure-sensitive adhesive tape 12 having a certain thickness and elasticity and an adhesive surface on both sides, which has a function of temporary fixing and unevenness absorption. ) Is a reinforcing member 2 which is provided with an elastic body 11 and an adhesive tape 12 on one side, and is used for temporary fixing, absorption of unevenness, and twist prevention.

FIGS. 8A to 8F show other examples of the dry type wall material used for the new outer wall 3, and FIG.
8A to 8C are sectional views of metal-based siding materials, FIG. 8D is a vinyl chloride siding material, and FIGS. 8E and 8F are ceramic siding materials.

FIG. 9A shows an example in which a waterproof sheet 13 is interposed between the reinforcing material 2 and the new outer wall 3 to improve the waterproof performance. Further, in FIG. 9B, furring rims 14 serving as a mounting base of the new outer wall 3 are arranged between the reinforcing member 2 and the new outer wall 3 at an appropriate pitch, and the thickness of the furring rim 14 itself is used. In this example, an air cycle path is secured.

10A, the furring strips 14 are arranged on the reinforcing member 2 at an appropriate pitch, a heat insulating layer 15 is formed between the furring strips 14, and the furring strips 14 are attached as a base. In addition, an air cycle passage for performing an air cycle is secured from the base D portion to the eaves point portion, and the new outer wall 3 is formed on the furring strip 14.

That is, the heat insulating layer 15 improves the heat insulating performance and the airtight performance of the entire structure and prevents the occurrence of dew condensation due to the temperature difference. In addition, the heat insulating layer 15 is formed by the thickness of the reinforcing material 2 itself or the overlapping of the reinforcing materials 2,
Since there is a step with the surface of the existing outer wall 1, this step is eliminated by disposing the heat insulating layer 15, and the surface is made flat, so that the construction of the new outer wall 3 is facilitated and the raised surface is made flat. It is something to make.

The heat insulating layer 15 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 15 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 15 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 moreover, 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. 10 (b) shows that the plate 16 made of a short steel plate or the like is driven to fix the tip of the reinforcing member 2 through the fixing tool α, so that the reinforcing member 2 can be fixed more strongly. This is an example in which the new outer wall 3 is formed after the process.

11 (a) and 11 (b) show another example of the arrangement of the reinforcing material 2, and the existing outer wall 1 is shown by a dotted line. That is, FIG. 11A shows a base D,
An example in which a horizontal reinforcing member 17 made of a long thin metal plate is placed on the existing outer wall 1 to the girder E or the girder G, etc., FIG. ,
And a horizontal reinforcing member 17 so as to connect the middle points of the main pillars B.
And a vertical reinforcing member 18 made of a metal steel plate is placed on each main pillar B. Since the horizontal reinforcing member 17 and the vertical reinforcing member 18 disperse the force applied to a specific place within the cast area in a wide range, durability against vibration of the structure A whose strength is locally reduced due to corrosion, breakage, etc. It is effective in improving.

[0027]

As described above, according to the outer wall repairing structure of the present invention, the foundation and the eaves girder that compose the existing frame from the existing outer wall to be repaired before the existing outer wall is repaired with the 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 is formed on the existing outer wall so as 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 resistant to vibration 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, construction is easy and 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. If you use a long metal plate that is formed into an arbitrary shape or processed to make it difficult to twist and loosen, the reinforcement will be a strong reinforcement and the reinforcement will be linear even during construction. Since the shape is maintained, construction is extremely easy. If horizontal and vertical reinforcements are provided, seismic resistance of aged building can be improved. Since two sets of one pair of reinforcing members are arranged in a staggered manner, the load due to vibration can be evenly distributed to each fixed portion, which provides strong reinforcement. There are features and effects such as.

[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 view 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 an example of construction of an outer wall repairing structure according to the present invention.

FIG. 5 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 6 is an explanatory view showing another example of the reinforcing material used in 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 novel outer wall used in the present invention.

FIG. 9 is an explanatory view showing another example of the outer wall repairing structure according to the present invention.

FIG. 10 is an explanatory diagram showing another example of the outer wall repair structure according to the present invention.

FIG. 11 is an explanatory diagram showing another example of arrangement of reinforcing members.

[Explanation of symbols]

 α Fixture A Frame B Main pillar C Pillar D Base D E Beam girder F Foundation G Grubber 1 Existing outer wall 2 Reinforcement material 3 New outer wall 4 Surface material 5 Back material 6 Core material 7 Actor 8 Tongue piece 9 Rib 10 Fixed part 11 Elastic body 12 Adhesive tape 13 Waterproof sheet 14 Furring edge 15 Insulation layer 16 Plate 17 Horizontal reinforcement 18 Vertical reinforcement

Claims (1)

[Claims] 1. In a structure in which main columns such as through columns and tube columns arranged at equal intervals are used as a frame, and in a structure in which an existing outer wall of a structure is refurbished with a new outer wall, an existing skeleton is constructed on the existing outer wall to be refurbished. To connect the foundation and gable girder or girder diagonally, fix the first set of reinforcing material consisting of a pair of long steel plates at the place where the main pillar intersects the base, gable girder or girder It is arranged so that it intersects on the midpoint of the main pillar as a point, and then the upper and lower ends of the main pillar having the intersection of the first set of reinforcements, that is, the main pillar intersects the base, gable beam or girder. The second set of reinforcing materials is arranged so that the fixing points of the first set of reinforcing materials cross each other at the midpoints of the main pillars having the fixing points of the first set of upper and lower parts, and the reinforcing material is fixed to the body. Exterior wall renovation characterized by forming a new exterior wall made of dry wall material on the existing exterior wall to cover it Construction.