JPH08270179A - Outer wall improving structure - Google Patents

Abstract

PURPOSE: To improve an outer wall of a building while enhancing the entire frame strength and heat insulation of the building. CONSTITUTION: A reinforcing member C connecting a base 3 and a ridge beam or a gable beam 4 which constitute an existing building A so as to reinforce the strength of the building A is diagonally laid on an existing exterior wall B, and is secured to the building. With this arrangement, the entire strength of the building can be enhanced, and a heat insulating layer D is applied on the reinforcing member C so as to make the outer surface flat and to enhance the heat insulation. Further, a new exterior wall E is formed on the heat insulating layer D.

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 reinforcing plate is arranged to improve the strength of a building, and a heat insulating material is filled to improve the heat insulating property, and then a new outer wall made of a dry type wall material is formed on the surface.

[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 repair is burdened,
It was weak in strength, particularly inferior in earthquake resistance, and sometimes new outer walls fell off due to the occurrence of earthquakes, damage to the skeleton, collapse of buildings, and the like. Moreover, it cannot be said that the heat insulating property is sufficient.

[0004]

In order to eliminate such drawbacks, the present invention provides a foundation, a girder, a girder or a gable beam which constitutes an existing skeleton before the existing outer wall is refurbished with a new outer wall. By connecting the space between them, a reinforcing material that reinforces the strength is arranged from the existing outer wall surface, and by fixing it to the existing frame, the strength of the entire building is improved and the outer surface becomes flat on the reinforcing material. As described above, the present invention proposes an outer wall repair structure in which a new outer wall is formed on the heat insulating layer by eliminating the rattling and unevenness of the surface due to the use of the reinforcing material by disposing the heat insulating layer.

[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 frame of an existing building, B is an existing outer wall, C is a reinforcing material, D is a heat insulating layer, E is a new outer wall, F is a foundation, and G is an accessory.

As shown in FIG. 1 (b), the skeleton A is a general structure composed of a vertically extending main pillar 1, a stud 2, and a horizontally extending base 3, eaves girder or gable beam 4. 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 B is shown by a chain line and omitted for convenience.

The existing outer wall B 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 waterproof sheet, a metal siding, a ceramic siding, an ALC panel, a tile, a dry wall material such as a vinyl chloride extrusion siding, and the like.

Further, as shown in FIG. 1, one or more reinforcing members C are arranged obliquely on the existing outer wall B from the base 3 to the eaves girder or the girder 4, and the skeleton is provided through the existing outer wall B. Attached to at least the base 3, the eaves girder, or the girder 4 constituting A by a fixture α such as a nail, a screw screw, a tex, an anchor, or an anchor bolt, and a brace for improving the strength of the old frame A and the existing outer wall B. And the function of preventing falling when the existing outer wall B is a tile, brick, or the like. Moreover, the fixation is shown in FIG.
As shown in an enlarged view in (b), at least the skeleton A (horizontal girder or girder 4 in the figure) extending in the horizontal direction by the fixture α and the skeleton A (main pillar 1 in the figure) extending in the vertical direction, respectively, at least. Fixing at one or more places is preferable in order to exert the effect as a brace.

As shown in FIG. 2 (a), the reinforcing material C is, 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, a composite of these, or a fiber reinforced resin. 1 and the like, which is made of a metal strip or a linear material, and constitutes at least the skeleton A, and is arranged so as to connect the base 3, the eaves girder, or the girder 4 extending in the horizontal direction, It is fixed to improve the strength of the building frame. Further, as shown in FIG. 1, the reinforcing material C is
It is preferable from the viewpoint of strength that the existing outer walls B are diagonally arranged so as to cross each other, and of course, the reinforcing material C is also attached to the main pillars 1 and the studs 2 extending in the vertical direction by using the fixing tool α. It can also be fixed.

The heat insulating layer D is formed on the reinforcing material C as shown in FIG. 1, and when the reinforcing material C is made of metal, it is reinforced by a temperature difference when the heat insulating performance and airtightness of the entire structure are improved. This is to prevent dew condensation on the material C. Also,
Since the heat insulating layer D has a step with the surface of the existing outer wall B due to the thickness of the reinforcing material C itself or the overlapping of the reinforcing materials C, the step is eliminated by disposing the heat insulating layer D, and the surface is flattened. Therefore, the construction of the new outer wall E, which will be described later, is facilitated and the rising surface is made flat.

The heat insulating layer D is formed by, for example, synthetic resin foam such as polyurethane, polyisocyanurate, phenol, vinyl chloride, polyethylene, polystyrene as shown in FIG. 3, gypsum board, rock wool board, glass fiber, sheathing board. It is also possible to sequentially form board-shaped panels such as an inorganic board and the like, but it is particularly preferable to use an on-site blown foam type synthetic resin.

That is, when the heat-insulating layer D 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 that has passed can also be used. Of course, a non-CFC synthetic resin is used, and flame retardant is achieved with phenol. Further, when the heat insulating layer D 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 C, and further, to blow and foam even in a narrow place so that the airtightness is further improved. Insulation can be achieved, and the construction is easy and the cost is reduced.

The new outer wall E is made of a metal type siding material or a dry type outer wall material made of ceramic siding material, PVC extruded siding material, ALC panel, tile, metal panel, etc. , A core material 7 made of synthetic resin foam made up of a front surface material 5 made of a thin metal plate and a back surface material 6 made of a thin metal plate or sheet.
The metal-based siding material sandwiched by is preferable because it is lightweight, has excellent strength, and is easy to construct.

Further, as shown in FIG. 1, the new outer wall E is directly attached on the heat insulating layer D directly to the skeleton A via the fixing tool α, and has a large outer surface of the building, which is aesthetic, heat insulating and soundproof. In addition, the fireproof property is further improved. Of course, when forming the new outer wall E, drainer, starter, toe,
The accessory G such as a joiner and a corner for entering and exiting 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 B composed of a mortar wall or the like, two long strip-shaped reinforcing members C as shown in FIG. 2 (a) are arranged so as to cross diagonally from the four corners of the wall surface of the building, and by the fixture α, The base 3, the eaves girders, or the girders 4 are connected to each other to reinforce and improve the strength of the existing frame A and the existing outer wall B.

Then, an in-situ foaming synthetic resin is sprayed onto the reinforcing material C so that the surface becomes flat and foamed to form the heat insulating layer D. Finally, a new outer wall E made of a metal-based siding material is sequentially mounted on the heat insulation layer D by using a fixing tool α such as a nail, and then constructed.

What has been described above is one 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 13 or to use a member for repairing.

That is, FIGS. 5 to 7 are explanatory views showing another embodiment of the outer wall repair structure according to the present invention.
(A) shows that the number of reinforcing materials C is arbitrarily increased depending on the area of the existing outer wall B to be refurbished. At this time, the diagonally extending reinforcing material C does not exceed l1: l2 = 3: 1 when the length in the longitudinal direction (vertical direction in the drawing) is l1 and the length in the width direction (horizontal direction in the drawing) is l2. It is preferable to dispose them in a certain degree in terms of strength, and if it is within this range, the effect of bracing is most exerted.

FIG. 5 (b) shows an example of the arrangement of the reinforcing material C when the existing outer wall B to be repaired has an opening β such as a window or entrance, and reinforcement is provided to the left and right of the opening β. By arranging the materials C so as to intersect with each other, by arranging the reinforcing materials C that extend horizontally also in the upper and lower portions of the opening β, and connecting the left and right reinforcing materials C to each other, the opening β is formed in the existing outer wall B. The strength can be improved even in the presence of. In the figure, the tensile strength of the reinforcing material C is improved by folding back the end portion of the reinforcing material C.

FIG. 6 shows an example of a case where the building has two or more floors. When the building has two or more floors, a girder 8 is interposed between the base 3 and the eaves girder or gable beam 4. It is an example which shows the structure of the body A which does. In that case, other than the one shown in the drawing, the body insert 8, the base 3, the eaves girder or the girder 4 may be connected by the reinforcing material C. Note that, in FIGS. 5 and 6, the existing outer wall B is shown by a dashed line for convenience.

FIG. 7 shows an example in which a waterproof sheet H is interposed between the heat insulating layer D and the new outer wall E to improve the waterproof performance.

FIG. 8 shows a modified example of the reinforcing material C. FIG. 8 (a) is L-shaped in cross section, FIG. 8 (b) is U-shaped, and FIG. 8 (c) is convex. The figure shows a hat-shaped cross section, and the figure (e) shows a hollow prism, both of which have higher strength than the flat reinforcing plate C.

Further, FIG. 9 shows an example in which a turnbuckle is used as the reinforcing material C. As shown in FIG. 9A, the fixing portions 9 provided at both ends are connected to each other by a long steel material, a wire or the like. It is an example of a reinforcing member C including a portion 10 and an adjusting portion 11 that fastens the connecting portions 10 to each other.

That is, as shown in FIGS. 10 (a) and 10 (b), the fixing portion 9 is fixed to the existing outer wall B from above the existing outer wall B by using the fixing tool α as shown in FIGS. 9 (b) and 9 (c). It is a part fixed to the skeleton A through the, and has a fixing hole 9a as necessary. The connecting portion 10 is made of a long steel material, a wire, or the like, connects the fixing portion 9 and the adjusting portion 11, and has a screw thread 10a inside. Adjustment unit 1
Reference numeral 1 is for fitting with the thread 10a of the connecting portion 10, and the adjusting portion 11 is provided with a thread groove. By rotating the adjusting portion 11, the length of the entire reinforcing material C is adjusted. Is.

By adjusting the degree of rotation of the adjusting portions 11 of the reinforcing members C that intersect with each other, the existing frame A can be adjusted.
It is possible to adjust and correct vertically even if is distorted or skewed. Note that FIG.
In (b), for convenience, the existing outer wall B is omitted by a dashed line.

Further, FIGS. 11 (a) to 11 (j) show a modification in which the reinforcing material C is used as a turnbuckle. 12 (a) to 12 (p) show a modified example of the fixing tool α for fixing the turnbuckle.

13 (a) to 13 (f) show another example of the dry type wall material used for the new outer wall E.
(A)-(c) are metal siding materials, FIG.13 (d).
Shows a cross-sectional shape of a PVC siding material, and FIGS. 13 (e) and 13 (f) show sectional shapes of a ceramic siding material. Of course, it is also possible to provide a repair structure in which these members are combined.

[0028]

As described above, according to the outer wall repairing structure of the present invention, the reinforcing material for reinforcing the strength of the existing frame or existing outer wall is provided on at least the foundation, girder or gable beam from above the existing outer wall. Since two or more of them are arranged so as to be connected to each other, the strength of the entire building is improved, and the structure is strong against horizontal loads and 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 heat insulating layer is filled between the existing outer wall and the new outer wall, the structure has a high heat insulating property, and even if the reinforcing material C is made of metal,
It is possible to prevent the occurrence of dew condensation due to the temperature difference. Since the outer surface becomes flat after the heat insulation layer is formed, the step due to the reinforcement material is eliminated, making it easy to form a new wall material, and the new outer wall's rising surface becomes flat, which improves the design. Do not block. 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 diagram showing an example of a heat insulating layer used in the present invention.

FIG. 4 is an explanatory view showing an example of a new outer wall used in 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 outer wall repair structure according to 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 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 the reinforcing material used in the present invention.

FIG. 12 is an explanatory view showing another example of the fixture used in the present invention.

FIG. 13 is an explanatory view showing another example of the novel outer wall used in the present invention.

[Explanation of symbols]

 α Fixing device β Opening A Body B Existing outer wall C Reinforcement D Heat insulation layer E New outer wall F Foundation G Facility H Waterproof sheet 1 Main pillar 2 Pillar 3 Base 4 House girder or gable beam 5 Surface material 6 Backside material 7 Core material 8 Body insert 9 Fixing part 9a Fixing hole 10 Connection part 10a Screw thread 11 Adjusting part

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 strip-shaped or bar-shaped reinforcing material obliquely extending from a foundation to an eaves girder or a gable beam is arranged and fixed on the existing wall surface to be refurbished, An outer wall repair structure characterized in that a heat insulating layer is formed on the reinforcing material so that the outer surface is substantially flat, and a new outer wall made of a dry wall material is formed on the heat insulating layer.