Structure for repairing existing walls

Abstract

To provide a structure for repairing existing walls that can prevent tiles from falling off existing walls.SOLUTION: A sheet-shaped covering member 2 is placed on the surface of an existing tiled wall 1, covering the surface of the existing wall 1. Furring strip 3 is placed on the surface side of the covering member 2. New wall materials 5 are installed using mounting tools 4 fixed to the furring strip 3. A plurality of covering members 2 are placed on the surface of the existing wall 1 with the upper and lower adjacent covering members 2 partially overlapping, and the overlapping portions 20 of the covering members 2 are preferably fixed to the existing wall 1 with fixtures 30 of the furring strip 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a repair structure for an existing wall, and more particularly to a repair structure for an existing tiled wall. [Background technology]

[0002] Patent Document 1 discloses a repair structure for an exterior wall. In this repair structure, fall prevention members, which are long members with a hat-shaped cross section, are fixed to extend horizontally on an existing tiled exterior wall. The fall prevention members are fixed in a state in which they are spaced apart vertically and horizontally. Furthermore, in the spaces between adjacent fall prevention members on the left and right, furring strips extending vertically are placed, and the exterior wall material is installed using fasteners fixed to the furring strips. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6404555 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned modified structure, in areas where fall prevention members and furring strips were not installed, it was not possible to prevent tiles from peeling off, and there was a risk of the tiles falling.

[0005] The present invention has been made in consideration of the above-mentioned reasons, and has an object to provide a repair structure for an existing wall in which tiles on the existing wall are less likely to fall off. [Means for solving the problem]

[0006] In one embodiment of the present invention, a repair structure for an existing wall comprises a sheet-like covering member that covers the surface of the existing wall, which is tiled, placed on top of the surface of the existing wall, furring strips installed on the surface side of the covering member, and new wall material installed using mounting fixtures fixed to the furring strips. Effect of the Invention

[0007] According to the present invention, the covering member can suppress the peeling of tiles from the existing wall. Also, tiles that have peeled off from the existing wall can be captured by the covering member. Therefore, the tiles are less likely to fall off. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing an embodiment of a repair structure for an existing wall according to the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the work involved in installing the furring strips. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1. Overview The repair structure for an existing wall 1 in this embodiment is a repair structure for an existing wall 1 that is tiled. Therefore, the existing wall 1 has a plurality of tiles 10 on its surface. A sheet-like covering member 2 is placed on the surface of this existing wall 1, and the surface of the existing wall 1 is covered with the covering member 2. Furthermore, furring strips 3 are installed on the surface side of the covering member 2, and new wall material 5 is installed using fixtures 4 fixed to the furring strips 3.

[0010] In this embodiment, the sheet-like covering member 2 is disposed on the surface of the existing wall 1, so that the covering member 2 is located on the surface side of the tiles 10 of the existing wall 1. Therefore, the covering member 2 presses the tiles 10 from the surface side, making it difficult for the tiles 10 to peel off from the existing wall 1. Even if the tiles 10 do peel off from the existing wall 1, the peeled tiles 10 are likely to be captured by friction with the covering member 2, etc. Therefore, the repair structure for the existing wall 1 in this embodiment makes it difficult for the tiles 10 to fall off.

[0011] In this embodiment, the surface of the existing wall 1 formed by the tiles 10 is defined as the front surface, and the direction perpendicular to this surface is defined as the front-rear direction. The downward direction is the vertically downward direction, and the direction opposite to the downward direction is defined as the upward direction. The direction perpendicular to the front-rear direction and the up-down direction is defined as the left-right direction. Note that "perpendicular" means intersecting at a right angle, but it also includes not only intersecting at a right angle, but also intersecting at a slightly deviated angle from a right angle (almost a right angle).

[0012] 2.Details (Embodiment) As shown in Fig. 1, this embodiment shows a repair structure for an existing wall 1. Here, the existing wall 1 is a wall having tiles 10 on its surface. Such an existing wall 1 is used as an exterior wall of a building, condominium, etc. There is a risk that the tiles 10 will fall off the existing wall 1 due to deterioration over time. Therefore, a repair structure such as that of this embodiment can prevent the tiles 10 from falling off.

[0013] In this embodiment, an existing wall 1 is renovated using a covering member 2, furring strips 3, mounting fixtures 4 and new wall material 5.

[0014] <Existing wall> The existing wall 1 is an exterior wall of a building, and is a tiled wall with a plurality of tiles 10 provided on its surface (outdoor side). The existing wall 1 is formed, for example, by adhering a plurality of tiles 10 to the surface of a structural wall (RC wall) 11 made of reinforced concrete or the like via an adhesive layer 12. The adhesive layer 12 is made of, for example, hardened mortar. The plurality of tiles 10 are arranged side by side in the vertical and horizontal directions.

[0015] <Covering material> The covering member 2 is formed in a sheet shape. For example, the covering member 2 may be the same as a roofing material arranged on the roof sheathing. In this case, examples of the covering member 2 include an asphalt-based sheet material formed using asphalt, a modified asphalt-based sheet material formed using asphalt containing a modifier such as rubber, and a polymer-based sheet material formed using a synthetic resin such as polyvinyl chloride or polyethylene. The thickness of the covering member 2 may be, for example, 0.5 mm or more and 2.0 mm or less, but is not limited thereto.

[0016] The covering member 2 is placed on the surface of the existing wall 1. As a result, the surface of the existing wall 1 is covered with the covering member 2. The covering member 2 can be placed so as to cover the entire surface of the existing wall 1, but it may also be placed so as to cover only a part of the surface of the existing wall 1.

[0017] The covering member 2 preferably has adhesiveness. This allows the covering member 2 placed on the surface of the existing wall 1 to adhere to the surface of the tile 10, improving the integrity of the covering member 2 and the tile 10 and preventing the tile 10 from peeling off from the adhesive layer 12. In addition, the tile 10 that has peeled off from the adhesive layer 12 will adhere to the covering member 2 and will not easily fall off.

[0018] In this embodiment, a plurality of covering members 2 are arranged on the surface of the existing wall 1. The plurality of covering members 2 are arranged side by side in the vertical and horizontal directions. Here, it is preferable that adjacent covering members 2 are arranged so that their ends overlap in the front-to-rear direction. That is, the covering members 2 adjacent in the vertical direction are arranged such that the lower end 21 of the upper covering member 2 overlaps the surface of the upper end 22 of the lower covering member 2. Also, the covering members 2 adjacent in the horizontal direction are arranged such that the right end of the left covering member 2 and the left end of the right covering member 2 overlap in the front-to-rear direction.

[0019] The overlap dimension (vertical dimension) of adjacent covering members 2 in the vertical direction can be about 90 mm, and the overlap dimension (horizontal dimension) of adjacent covering members 2 in the horizontal direction can be about 150 mm, but is not limited to these. Since the ends of adjacent covering members 2 overlap in the front-to-back direction in this manner, gaps are unlikely to occur between adjacent covering members 2, and moisture is unlikely to reach the existing wall 1 through the gaps between adjacent covering members 2. Therefore, deterioration of the existing wall 1 due to moisture (deterioration of the tiles 10, adhesive layer 12, and framework wall 11) is unlikely to progress, and peeling and falling of the tiles 10 can be further suppressed.

[0020] In addition, the moisture permeability resistance of the covering member 2 is increased (for example, 0.144 (m 2 By providing the covering member 2 with a surface roughness of 1.0 s·Pa / ng or more, moisture such as humidity is less likely to reach the existing wall 1 through the covering member 2, and deterioration of the existing wall 1 due to moisture can be further suppressed.

[0021] <Furring strip> The furring strips 3 are base members for attaching the new wall material 5. The furring strips 3 are formed to extend in the vertical direction. A number of furring strips 3 are arranged in front (on the exterior side) of the existing wall 1 and covering member 2. The multiple furring strips 3 are arranged side by side in the left-right direction at predetermined intervals. The furring strips 3 may be made of, for example, L-shaped steel, H-shaped steel, C-shaped steel, channel steel, square steel pipe, or other shaped steel, but are not limited to these, and may also be wooden furring strips 3. The furring strips 3 are fixed to the existing wall 1 by fasteners 30 for fixing the furring strips.

[0022] The fixing device 30 comprises an anchor bolt 31 and a receiving member 32. Most of the anchor bolt 31 is embedded and fixed in the existing wall 1, with its tip protruding forward (to the outdoors) of the covering member 2. By arranging the anchor bolt 31 penetrating the covering member 2 in this manner, the covering member 2 adheres closely to the outer circumferential surface of the anchor bolt 31, making it possible to reduce the infiltration of water (including humidity) through the hole in which the anchor bolt 31 is attached. When the covering member 2 is a sheet material containing asphalt, the adhesion of the anchor bolt 31 to the outer circumferential surface is particularly improved.

[0023] After the covering member 2 is placed on the surface of the existing wall 1, a hole is formed from the front of the covering member 2 to the inside of the existing wall 1, and the anchor bolt 31 is inserted and fixed in place. Therefore, when forming a hole for the anchor bolt 31, the surface of the existing wall 1 is covered with the covering member 2, and even if vibrations occur when forming a hole or fixing the anchor bolt 31 in the hole, it is possible to prevent the tiles 10 from peeling off due to the vibrations. In addition, dust generated when a hole is formed in the structural wall 11 or the adhesive layer 12 tends to remain between the covering member 2 and the existing wall 1, and is less likely to be dispersed.

[0024] The receiving member 32 is a member having a fixed piece 322 and a receiving piece 321, and for example, an L-shaped steel can be used. The fixed piece 322 is formed in a flat plate shape parallel to the up-down and left-right directions, and is disposed in front of the covering member 2. The fixed piece 322 is fixed by an anchor bolt 31 and a nut 33 coupled to a threaded portion at the tip of the anchor bolt 31. The receiving piece 321 protrudes approximately perpendicularly toward the front from the fixed piece 322. A furring strip 3 is fixed to the receiving piece 321.

[0025] The fixing device 30 is provided in front of the overlapping portion 20 where the upper end 22 and the lower end 21 of the covering members 2 adjacent in the vertical direction overlap in the front-to-rear direction. Therefore, the anchor bolt 31 is driven into the existing wall 1, penetrating the overlapping portion 20. The rear surface of the fixing piece 322 of the receiving member 32 comes into contact with the front surface of the overlapping portion 20, and the receiving member 32 presses the overlapping portion 20 against the surface of the existing wall 1, thereby fixing the overlapping portion 20 to the existing wall 1.

[0026] In this way, the receiving member 32 of the fixing device 30 is pressed against the front surface of the overlapping portion 20, so that the adhesion between the covering member 2 and the surface of the existing wall 1 is increased, and the integrity between the covering member 2 and the tile 10 is improved, so that the tile 10 is less likely to peel off and fall off. In addition, the receiving member 32 is pressed against the front surface of the overlapping portion 20, so that the upper end 22 and the lower end 21 of the overlapping covering member 2 are less likely to separate in the front-rear direction, and thus a gap is less likely to occur between the upper end 22 and the lower end 21 of the covering member 2. Therefore, the tile 10 peeled off from the adhesive layer 12 does not protrude forward from the joint (overlapping portion 20) of the covering members 2 adjacent in the vertical direction, so that the tile 10 is less likely to fall off. In addition, moisture such as humidity is less likely to reach the existing wall 1 through the overlapping portion 20 of the covering member 2, so that deterioration of the existing wall 1 due to moisture can be further suppressed.

[0027] The fixing device 30 may be provided in front of the overlapping portion between the side ends (left end and right end) of horizontally adjacent covering members 2. In this case, it is possible to prevent gaps from occurring at the joints between horizontally adjacent covering members 2, making it even more difficult for the tiles 10 to fall off.

[0028] The furring strips 3 are positioned while being supported in front of the covering member 2 by the above-mentioned fixing device 30. The furring strips 3 are connected to the receiving piece 321 of the receiving member 32. That is, the side surface (left or right surface) of the furring strip 3 and the side surface (left or right surface) of the receiving piece 321 are joined and fixed by welding or screwing. Here, the furring strips 3 are positioned with a gap 6 between them and the covering member 2. That is, the rear surface of the furring strip 3 and the front surface of the covering member 2 are positioned opposite each other with the gap 6 interposed therebetween. This means that the furring strips 3 are positioned so as not to come into contact with the front surface of the covering member 2, and the furring strips 3 can be positioned so as not to be affected by the unevenness (irregularities) of the covering member 2 or the unevenness of the surface (front surface) of the existing wall 1.

[0029] The position of the furring strip 3 in the front-rear direction can be set by a plumb bob 9, as shown in FIG. 2. The plumb bob 9 is set on the receiving member 32 of the uppermost fixing device 30 among the multiple fixing devices 30 arranged in the vertical direction. Then, a string 90 with a weight 91 attached thereto is hung from the plumb bob 9, and the furring strip 3 is aligned along the string 90, thereby setting the position of the furring strip 3 in the front-rear direction. When aligning the furring strip 3 to the string 90, the indoor end (rear end) of the furring strip 3 may be aligned along the string 90, but it is easier and more practical to align the outdoor end (front end) of the furring strip 3 along the string 90. In FIG. 2, L1 indicates the case where the outdoor end (front end) of the furring strip 3 is aligned with the front end of the receiving member 32 of the fixing device 30. L2 indicates the case where the indoor end (rear end) of the furring strip 3 is aligned with the rear end of the receiving member 32 of the fixing device 30.

[0030] It is preferable that the dimension of the gap 6 in the front-to-rear direction is equal to or smaller than the thickness of the tile 10 of the existing wall 1. Specifically, when the dimension of the gap 6 in the front-to-rear direction is d and the thickness of the tile 10 of the existing wall 1 is t, it is preferable that the value of d / t is equal to or greater than 1 / 10 and equal to or smaller than 1. This makes it difficult for the tile 10 peeled off from the existing wall 1 to pass through the gap 6, making the tile 10 even less likely to fall. In other words, when the tile 10 peeled off from the existing wall 1 tries to pass through the gap 6, the tile 10 is more likely to get caught between the furring strip 3 and the existing wall 1, making it even more difficult for the tile 10 to fall.

[0031] <Mounting fixture> The fixture 4 is a fastener used to attach the new wall material 5 to the furring strip 3. The fixture 4 is placed on the exterior side (front) of the furring strip 3, and is fixed to the furring strip 3 with fasteners 40 such as nails or screws. When the fixture 4 is fixed to the furring strip 3, the existing wall 1 is covered with the covering member 2, so that it is possible to prevent the tiles 10 from falling off due to vibrations caused when the fasteners 40 are hammered in. In addition, a plurality of fixtures 4 are provided on the furring strip 3, lined up at predetermined intervals in the vertical direction. The fixture 4 has a locking portion 41, and an upper end 50 and a lower end 51 of the new wall material 5 are locked to the locking portion 41, and the new wall material 5 is constructed.

[0032] <New wall material> The new wall material 5 is a surface material that constitutes the outdoor side (front) of the exterior wall after renovation, and can be, for example, a substantially flat ceramic siding material. A number of new wall materials 5 are arranged side by side in the vertical and horizontal directions on the outdoor side (front) of the furring strips 3. The new wall material 5 is fixed to the furring strips 3 by mounting fixtures 4. The upper end 50 and lower end 51 of the new wall material 5 are supported by being engaged with the engaging portions 41 of the mounting fixtures 4.

[0033] <Effects of this embodiment> In this embodiment, the covering member 2 can prevent the tiles 10 from peeling off from the existing wall 1. Furthermore, the covering member 2 can capture the tiles 10 that have peeled off from the existing wall 1. Therefore, the tiles 10 are less likely to fall.

[0034] <Modification> The embodiment is merely one of various embodiments of the present invention. The embodiment can be modified in various ways depending on the design and the like as long as the object of the present invention can be achieved.

[0035] In the above embodiment, the existing wall 1 is an exterior wall. However, the existing wall 1 may be an interior wall within a building.

[0036] In the above embodiment, a plurality of covering members 2 are used, but the present invention is not limited to this, and a single covering member 2 may be used.

[0037] In the above embodiment, the new wall material 5 is formed of a ceramic siding material, but the present invention is not limited to this, and siding materials formed of wood boards, metal boards, ALC boards, EPC boards, etc. can also be used.

[0038] In the above embodiment, a dedicated fastener was used as the mounting fixture 4 for the new wall material 5, but this is not limited to this, and the new wall material 5 can be fixed to the furring strip 3 using fixing devices such as nails or screws.

[0039] In the above embodiment, the new wall material 5 is fixed in a horizontal manner, but the present invention is not limited to this and may be fixed in a vertical manner.

[0040] In the above embodiment, a short piece (piece) shorter than the vertical dimension of the furring strip 3 is used as the receiving member 32, but this is not limiting, and the receiving member 32 may be a long piece having the same vertical dimension as the furring strip 3. When the receiving member 32 is a long piece, the plumb bob 9 for positioning the furring strip 3 is a string 90 with a weight attached that hangs from the upper end of the receiving member 32.

[0041] (summary) As described above, in the first embodiment of the renovation structure for an existing wall 1, a sheet-like covering member 2 that covers the surface of the existing wall 1 is placed on the tiled surface of the existing wall 1, furring strips 3 are installed on the surface side of the covering member 2, and new wall material 5 is constructed using mounting fixtures 4 fixed to the furring strips 3.

[0042] According to this embodiment, the covering member 2 can prevent the tiles 10 from peeling off from the existing wall 1, and the covering member 2 can capture the tiles 10 that have peeled off from the existing wall 1, making the tiles 10 less likely to fall.

[0043] The second embodiment is a repair structure for an existing wall 1 of the first embodiment, in which a plurality of covering members 2 are arranged on the surface of the existing wall 1, with adjacent covering members 2 arranged so as to overlap partially above and below, and the overlapping portions 20 of the covering members 2 are fixed to the existing wall 1 by fasteners 30 for fixing the furring strips 3.

[0044] According to this embodiment, the fixing device 30 makes it difficult for the vertically adjacent covering members 2 to separate at the overlapping portions 20, and the tiles 10 are unlikely to fall out from between the vertically adjacent covering members 2.

[0045] The third embodiment is a repair structure for an existing wall 1 of the first or second embodiment, in which a gap 6 is formed between the covering member 2 and the furring strip 3.

[0046] According to this embodiment, the furring strips 3 can be installed while reducing the effect of unevenness of the existing wall 1 caused by the tiles 10.

[0047] The fourth embodiment is a repair structure for an existing wall 1 of the third embodiment, in which the dimension of the gap 6 in the front-to-rear direction is equal to or smaller than the thickness of the tile 10 of the existing wall 1.

[0048] According to this embodiment, the tiles 10 peeled off from the existing wall 1 are less likely to pass through the gaps 6, making the tiles 10 even less likely to fall.

[0049] The fifth embodiment is a repair structure for an existing wall 1 of the fourth embodiment, in which when the front-to-rear dimension of the gap 6 is d and the thickness of the tile 10 of the existing wall 1 is t, the value of d / t is 1 / 10 or more and 1 or less.

[0050] According to this embodiment, the tiles 10 peeled off from the existing wall 1 are less likely to pass through the gaps 6, making the tiles 10 even less likely to fall. [Explanation of symbols]

[0051] 1 Existing wall 2 Covering material 3. Fuselage 4 Mounting fixture 5 New wall materials 20 Overlap 30 Fixtures

Claims

1. A sheet-like covering member is placed on a surface of an existing wall that is tiled, the sheet-like covering member covering the surface of the existing wall being placed on the surface of the existing wall; A furring strip is provided on the surface side of the covering member, The new wall material is installed using a fixture fixed to the furring strip. Renovation structure of existing wall.

2. A plurality of the covering members are disposed on a surface of the existing wall; The covering members adjacent to each other in the vertical direction are arranged so as to overlap each other partially, The overlapping portion of the covering member is fixed to the existing wall by a fastener for fixing the furring strip. The repair structure for an existing wall according to claim 1.

3. A gap is formed between the covering member and the furring strip. The repair structure for an existing wall according to claim 1 or 2.

4. The front-to-rear dimension of the gap is equal to or less than the thickness of the tile of the existing wall. The repair structure for an existing wall according to claim 3.

5. When the dimension of the gap in the front-rear direction is d and the thickness of the tile of the existing wall is t, the value of d / t is 1 / 10 or more and 1 or less. The repair structure for an existing wall according to claim 4.

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