JPH0988295A - Repair structure of external wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the construction period, by arranging reinforcing materials so as to connect a sill and an eaves girder or a gable beam constituting an existing building[ body, from the outside of the existing external wall to be repaired and providing a new external wall constituted of dry external wall materials on the reinforcing materials. SOLUTION: Reinforcing materials H made of long and thin steel materials or the like applied with an adhesive elastic body at the rear face, are diagonally arranged so as to connect a sill D and an eaves girder or a gable beam E constituting a building body A from the outside of an exsisting external wall G. A steel fastening metal I having an angle-shaped section constituted of a fixing face, a driving face diagonally bent upward at one side of the fixing face and a fixing tongue bent downward, is fitted to the end of the reinforcing material H. And the reinforcing materials are fixed to the building body A through the fixing face by fixing metals. Then, a new external wall J made of a dry external wall material L like metallic siding materials, ceramic siding materials, ALC panels, etc., is directly stuck on the reinforcing materials H through the fastening metal I. Accordingly, Increase of the strength of building body and repair of the external wall can be simultaneously carried out.

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 repaired structure in which a new outer wall made of a dry outer wall material is formed on the 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 is designed to connect an existing outer wall to be remodeled to an existing outer wall so as to connect the foundation constituting the existing frame to the eaves girder or gable beam. An elastic body with adhesiveness is arranged at an arbitrary position on the surface of the surface, and a long reinforcing material that facilitates temporary fixing is diagonally arranged and fixed to the body, and the dry outer wall material covers the reinforcing material. A new outer wall is formed on the existing outer wall, and at least one end portion in the longitudinal direction of the reinforcing member is a fixed surface with a flat plate having holes at arbitrary positions and a flat surface in which one side of the fixed surface is bent and extended obliquely upward. It is composed of a driving surface and a locking tongue that bends at least a part of a flat surface on one end side of the driving surface below the driving surface with a gentle inclination, and the lower end side of the locking tongue and the driving surface are Through a fastener with a gap equivalent to the thickness of the reinforcing material. A fastener such as a nail was used to drive the structure from above the existing outer wall, and at least the end of the reinforcing material was inserted into the gap between the driving surface of the fastener and the locking tongue, and the end of the reinforcing material was inserted. In this state, the outer wall repair structure is proposed in which the placing surface is deformed so as to be substantially flush with the fixing surface to apply tension to the reinforcing material and fix the reinforcing material.

[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) and FIG. 2 (a partially enlarged view of FIG. 1 (a)) are explanatory views showing an example of the outer wall repair structure, where A is the frame of the existing building, F is the foundation, G is the existing outer wall, and H is A reinforcing material, I is a new outer wall, and K is an accessory.

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 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 G is shown by a chain line and omitted for convenience.

The existing outer wall G 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 outer wall material such as a waterproof sheet, metal siding, ceramic siding, ALC panel, tile, PVC extrusion siding, and the like.

As shown in FIG. 3, the reinforcing material H is made of a narrow and long thin plate-shaped steel material, various metal thin plates such as color steel plate and aluminum steel plate, a composite thereof, or a metal strip such as a fiber reinforced resin or the like. An elastic adhesive such as a hot melt adhesive, a synthetic rubber adhesive, a natural rubber adhesive or the like, which is attached in close contact with a substrate a made of a linear object or the like on one side of the substrate a The elastic body b is composed of a composite body of FIG. 3 shows a case where the elastic body b is arranged in a band shape in a range excluding both ends on both sides in the longitudinal direction. Of course, the elastic body b may be a double-sided tape.

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

The elastic body b is formed on one side of the substrate a by using a gun, a roll or the like, before carrying the reinforcing material H to the construction site in advance.
Alternatively, it is applied to an arbitrary pattern on one surface of the substrate a at the construction site, except for the vicinity of being locked by the fastener I. Of course, the construction is carried out within a time when the adhesive force of the elastic body b is effective, and the formation of the elastic body b is carried out at an appropriate time in consideration of the construction time.

As shown in FIGS. 1 (a) and 1 (b), one or more reinforcing members H are arranged diagonally on the existing outer wall G from the base D to the eaves girder or girder E. A brace that is attached to at least a base D, an eaves girder, or a girder E that constitutes the skeleton A through the existing outer wall G surface via a fastener I to be described later to improve the strength of the old skeleton A and the existing outer wall G surface. It has the function of. When two or more reinforcing members H are provided, they are formed by intersecting each other in a plow shape as shown in FIGS. 1 (a) and 1 (b).

Further, as a method of arranging the reinforcing material H, as shown in FIG. 1 (b), the reinforcing material H is arranged at an angle of about 45 degrees with respect to the base D, the eaves girder or the girder E, In addition, a quadrangular length L1 and a width L2 formed by using the reinforcing material H as a diagonal line.
It is preferable to arrange them so that the ratio of the sides is L1: L2 = about 1: 1. This is because the reinforcing member H exhibits the most function as a brace by making the vertical and horizontal 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 H is arranged from above the existing outer wall G, it can be easily arranged without being obstructed by the main pillars B and the studs C existing therebetween.

As shown in FIGS. 1 (a), 1 (b) and 2, the fastener I is attached to the end of the reinforcing member H and is formed by forming a steel plate into a generally V-shaped cross section. It is an interposition tool for attaching H to the skeleton A through the existing outer wall G, and is effective for applying a tension to the reinforcing material H when fixing the reinforcing material H to strengthen the reinforcing force.

The fastener I is formed as shown in FIGS. 4 (a) and 4 (b). That is, reference numeral 1 denotes a fixing surface, which is a portion for driving the fastener I by fixing it from the existing outer wall G to the skeleton A with a fixing tool α such as a nail, and a hole 2 for passing the fixing tool α. It has been drilled. Reference numeral 3 denotes a casting surface, which is bent and extended obliquely upward from one side of the fixed surface 1.

Reference numeral 4 denotes a locking tongue, which is formed by bending at least a part of the plane of at least one side of the driving surface 3 downwardly with respect to the driving surface 3 with a gentle inclination, as shown in FIG. In (b), the locking tongue 5 is provided symmetrically to the locking tongue 4 so as to draw a substantially inverted V-shape in cross section with the locking tongue 4. The gap 8 between the tips of the locking tongue 4 and the locking tongue 5 has a distance approximately the same as the thickness of the reinforcing material H, and is a portion for sandwiching the side end portion of the reinforcing material H. Further, a hole 6 is provided in the driving surface 3 and a hole 7 is provided at the boundary between the driving surface 3 and the locking tongue piece 4, and the driving surface 3 is bent so as to be substantially flush with the fixed surface 1. The fixing tool α is passed when it is driven into the existing outer wall G.

The side to be used in the longitudinal direction of the reinforcing material H is determined depending on whether the locking tongues 4 and 5 are provided on the right side or the left side.

The new outer wall J is made of a metal type siding material or a dry type outer wall material L made of ceramic siding material, PVC extruded siding material, ALC panel, tile, metal panel, etc. What
The metal-based siding sandwiching a core material 11 made of synthetic resin foam with a surface material 9 made of a metal thin plate and a back material 10 made of a metal thin plate or a sheet-like material is also lightweight and excellent in strength, and the strength of the existing outer wall G. It is preferable in that it is effective for improvement and is easy to construct.

Further, as shown in FIG. 1 (a), the dry type outer wall material L is directly attached on the reinforcing material H directly to the skeleton A through the fasteners I so as to cover the outer surface of the building, thereby improving the design and heat insulation. The properties, soundproofing, fireproofing, etc. are further improved.
Of course, when the new outer wall J is formed, the accessory K such as a drainer, a starter, a toe, a joiner, and a corner for entering and exiting is arranged as necessary.

Next, a method for constructing the outer wall repair structure according to the present invention will be briefly described. First, the reinforcing material H not shown
4 is temporarily fixed along the diagonal of the existing outer wall,
The fastener I shown in (a) and (b) is fixed to the skeleton A from the existing outer wall G by the fixing surface 1 as shown in FIG. At this time, the fixture α is to pass through the hole 2, and it is preferable to place the fixture at a position where the main pillar B intersects the base D, the eaves girder or the girder E. In addition, as shown in FIG. 2, when a plurality of fasteners I are used for fixing one place of the reinforcing material, they are arranged in parallel with the reinforcing material H at intervals such that they match the width of the reinforcing material H. Is.

Next, as shown in FIG. 7, the end portion of the reinforcing material H,
That is, the portion where the elastic body b is not arranged is fitted and fitted into the cavity 8 of the fastener I so that the fastener α is inserted into the hole 6 and the reinforcing material H is still inserted into the cavity 8. As shown in FIG. 8, the mounting surface 3 of the fastener I is deformed so as to be substantially flush with the fixing surface 1, and the fixture α that has passed through the hole 6 is mounted on the existing outer wall G and the frame A. . The fastener I is deformed by hammering or other force such as pressing. When performing the deformation, the portion of the reinforcing member H sandwiched in the void 8 has the placing surface 3 inclined in the horizontal direction. The width of the space 8 in the vertical direction of the reinforcing material H becomes narrower as it goes, and the clamping force increases, so that the reinforcing material H does not shift. By deforming the fastener I, the portion of the reinforcing material H sandwiched in the gap 8 moves outward with respect to the longitudinal direction of the reinforcing material H, and the reinforcing material H is stretched to eliminate looseness. It is a powerful reinforcement.

Then, as shown in FIG. 9, the fixing tool α is driven through the hole 7 and through the reinforcing material H to the existing outer wall G and the body A to completely fix the end portion of the reinforcing material H. To do.

It should be noted that the fastening members I are provided on both sides of the reinforcing material H in the width direction.
When used, it is arranged as shown in FIG. 10, which is effective for strong and stable fixation. Although not shown, in the vicinity of the end of the reinforcing material H fixed by the fastener I, the fixing tool α is directly driven from above the reinforcing material H to the existing outer wall G and the skeleton A to further improve the fixing strength. Can be increased. Further, it is also possible to fix one end of the reinforcing material H only by the fixing tool α and fix the other end by using the fastener I.

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. 11 to 18 can be used, or members for repairing can be used.

That is, FIG. 11A shows an example in which the waterproof sheet 12 is interposed between the reinforcing material H and the new outer wall J to improve the waterproof performance. Further, FIG. 11B shows a furring strip 13 which is a base for mounting the new outer wall J between the reinforcing material H and the new outer wall J.
Is an example in which the air cycle path is secured by arranging the elements at an appropriate pitch and utilizing the thickness of the furring strip 13 itself.

FIG. 12 shows an example in which the furring strips 13 are arranged on the reinforcing material H at an appropriate pitch, and the heat insulating material layer 14 is formed between the furring strips 13. The heat insulating layer material 14 improves the heat insulating performance and airtight performance of the entire structure, and when the reinforcing material H is made of metal,
This is to prevent condensation due to the temperature difference.
For example, polyurethane, polyisocyanurate, phenol, vinyl chloride, polyethylene, synthetic resin foam such as polystyrene, and board-shaped panels such as gypsum board, rock wool board, glass fiber, inorganic board such as siding board are formed in order. It can be formed by laminating, but it is particularly preferable to use an on-site blown foam type synthetic resin.

13 (a)-(d) -FIG. 15 (a)-
(D) is an example in which the reinforcing material H used in the outer wall repair structure according to the present invention is modified.

That is, FIG. 13A shows an example in which the elastic body b is applied over the entire area of the surface of the reinforcing member H which is in contact with the existing outer wall except for the vicinity of both ends, and FIG. other,
An example in which a bent strip-shaped elastic body b is arranged near the center line, FIG.
3 (c) and 3 (d) are examples in which a plurality of ribs 15 are provided at both ends in the longitudinal direction of the substrate a, and the engagement with the fastener I is strong and can be performed reliably.

Further, FIGS. 14A to 14D show other patterns of arrangement of the elastic body b. Also, FIG.
5 (a) to 5 (d) show examples of arrangement patterns of the elastic body b and the adhesive tape 16 when the adhesive tape 16 is arranged to further strengthen the temporary fixing.

16 (a) to 16 (f) show another example of the dry type outer wall material L used for the new outer wall J. FIGS. 16 (a) to 16 (c) show metal-based siding, and FIG.
16D shows a cross-sectional shape of PVC siding, and FIGS. 16E and 16F show sectional shapes of ceramic siding.

17 (a)-(d) and 18 (a)-
(D) is a modified example of the fastener I. FIG.
(D) shows that the locking tongue pieces 4 are provided on both sides of the driving surface 3 and the direction of use is not limited.
Shows an example in which the locking tongue piece 5 is not provided, and FIG. 17 (c) shows an example of a fastener I in which two kinds of gaps can be selected depending on the strength to be tightened.

FIG. 18A shows an example in which the locking tongue 4 is formed large, and FIG. 18B shows the locking tongue 4 without the locking tongue 5.
18 (c) is an example in which the gap 8 is provided at two positions so that the gaps 8 can be selectively used as needed. FIG. 18 (d) shows the tips of the locking tongues 4 and 5, respectively. It is an example of a fastener I having a saw-like shape to strengthen the connection with the reinforcing material H.

[0032]

According to the outer wall repairing structure of the present invention as described above, the foundation and the eaves girder constituting 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 diagonally arranged and fixed to the body through a fastener, and a new outer wall is formed on the existing outer wall so as to cover the reinforcing material. The strength can be improved, the strength of the skeleton 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 construction man-hours 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.
Since the slack does not occur in the reinforcing material when the tension is applied to the reinforcing material by the fastener, the reinforcement is extremely strong against vibration. Since the back surface of the reinforcing material is provided with an elastic material having adhesiveness, temporary fixing is easy, and the slack can be further reduced, resulting in stronger reinforcement. Since the back surface of the reinforcing material is provided with an elastic body having adhesiveness, unevenness (unevenness) of the existing outer wall is absorbed and the workability is improved. 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 a partially enlarged view showing a fixed portion of an end portion of a reinforcing member.

FIG. 3 is an explanatory diagram showing an example of a reinforcing material used in the present invention.

FIG. 4 is an explanatory view showing an example of a fastener used in the present invention.

FIG. 5 is an explanatory view showing an example of a dry type outer wall material used in the present invention.

FIG. 6 is an explanatory diagram of an embodiment of a construction method of the present invention.

FIG. 7 is an explanatory diagram of an embodiment of a construction method of the present invention.

FIG. 8 is an explanatory diagram of an example of a construction method of the present invention.

FIG. 9 is an explanatory diagram of an embodiment of a construction method of the present invention.

FIG. 10 is an explanatory diagram of an embodiment of a construction method of the present invention.

FIG. 11 is an explanatory diagram showing another example of the outer wall repair structure according to the present invention.

FIG. 12 is an explanatory view showing another example of the outer wall repair structure according to the present invention.

FIG. 13 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 14 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 15 is an explanatory view showing another example of the reinforcing material used in the present invention.

FIG. 16 is an explanatory view showing another example of the dry type outer wall material used in the present invention.

FIG. 17 is an explanatory view showing another example of the fastener used in the present invention.

FIG. 18 is an explanatory view showing another example of the fastener used in the present invention.

[Explanation of symbols]

 α Fixture A Frame B Main pillar C Gambling D Foundation E Eave girder or gable beam F Foundation G Existing outer wall H Reinforcement material I Fastener J New outer wall K Material L Dry outer wall material a Substrate b Elastic body 1 Fixed surface 2 Hole 3 Placing surface 4 Locking tongue 5 Locking tongue 6 Hole 7 Hole 8 Air gap 9 Surface material 10 Back material 11 Core material 12 Waterproof sheet 13 Furnace 14 Thermal insulation layer 15 Rib 16 Adhesive tape

Claims (1)

[Claims] 1. In a structure in which an existing outer wall of a building or a structure is renovated with a new outer wall, a long reinforcing member is provided so as to connect the foundation constituting the existing skeleton to the eaves girder or gable beam on the existing outer wall to be renovated. It is arranged diagonally and fixed to the body,
A structure in which a new outer wall made of a dry type outer wall material is formed on the existing outer wall so as to cover the reinforcing material, and at least one end portion in the longitudinal direction of the reinforcing material is a flat plate with a hole drilled at an arbitrary position. A surface and a mounting surface of a flat surface in which one side of the fixed surface is bent and extended obliquely upward, and a locking tongue in which at least a part of the flat surface on one end side of the mounting surface is bent downward with a gentle inclination. The lower end side of the locking tongue and the driving surface are provided with a fastener having a gap equivalent to the thickness of the reinforcing material, and the fastener is fixed on the fixing surface by a fixture such as a nail. Placed on the structure from the existing outer wall, insert at least the end of the reinforcing material in the gap between the surface of the fastener and the retaining tongue, and leave the end of the reinforcing material in place. Fix the reinforcing material by deforming so that it becomes approximately the same plane as the fixing surface,
Further, the reinforcing material is an outer wall repairing structure characterized in that an elastic body having an adhesive property is arranged on an arbitrary portion of a surface of the reinforcing material which is in contact with an existing outer wall.