JP4514979B2 - ALC exterior wall repair equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a building outer wall refurbishing apparatus in which an existing outer wall material is made of lightweight cellular concrete which is a member having relatively low impact resistance such as an ALC outer wall material.
[0002]
[Prior art]
Aerated concrete or lightweight cellular concrete (hereinafter referred to as ALC exterior wall material) is a lightweight building material with excellent heat insulation, sound insulation and fire resistance, and is widely used as an exterior wall material, partition wall material, flooring material, and roofing material. ing.
[0003]
Although these advantages are due to the property of being porous, on the other hand, the water absorption rate is high, and regular painting for waterproofing is unavoidable, and there has been a problem of rising maintenance costs including pretreatment.
[0004]
When the ALC outer wall material deteriorates, a method of replacing it with a new outer wall material can be considered, but it is not a good measure in terms of waste material processing and construction costs.
[0005]
In order to solve the above-mentioned problems, as a method for attaching a new outer wall material to the surface of an existing outer wall material and keeping the characteristics of the ALC outer wall material beautifully repaired, the construction surface is disclosed in JP-A-11-93374 (hereinafter referred to as JP-A-11-93374). No. 11-124980 (hereinafter referred to as Reference Example 2) and Japanese Patent Application No. 2000-337401 (hereinafter referred to as Reference Example 3) have been developed.
[0006]
In Reference Example 1 of the prior art, there is a limit to the contact area with the base steel material (insufficient strength), as in “... Bolt (4) is laid on base steel material (3) such as existing angle, etc.”) Furthermore, there is a description that "... the covering material (6) and the existing ALC panel are joined ...", and there is a risk that the existing ALC panel becomes fragile by the use of anchor bolts.
[0007]
In Reference Example 2 of the prior art, although there is a description that “... a support fitting is inserted from the core punching hole 40”, the construction position is increased to a pitch of an H steel beam, generally 1200 mm, and in the middle of the pitch The negative pressure applied to the new outer wall material is large. Therefore, the difference from the technical configuration of the present invention "... facing and fixing between the front and back surfaces of the existing ALC outer wall material ..." is obvious and the workability is greatly inferior.
[0008]
In the reference example 3 of the prior art, although "... Core core hole and support bracket ..." is described, there is no technical configuration of "... screwed and fixed with screws ..." of the present invention. Therefore, it cannot be expected that the support will be securely fixed in place.
[Problems to be solved by the invention]
[0009]
[Problems to be solved by the invention]
In order to solve such problems, the present invention provides a fixing bracket for attaching a new outer wall material to the outside of the existing ALC outer wall material, minimizes the load applied to the existing ALC outer wall material, and prevents damage to the ALC outer wall material. The purpose is to provide an improved repair device.
[0010]
[Means for Solving the Problems]
Insert a support fitting from the core hole that penetrates the existing ALC outer wall material, hold the front and back plates of the support fitting between the front and back surfaces of the ALC outer wall material, and fix them with screws. A refurbishing device that abuts or fixes the vertical or horizontal body edge and attaches a new outer wall material to the outside. A bridging plate fixed to the inner surface of the plate, a through hole located below the bridging plate and drilled from the outer surface plate to the outer surface of the back plate, including the ALC exterior material, and the through hole. It consists of a screw that can be fixed in position.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the support fitting 2 of the first embodiment includes a square surface plate 3 having a side of 50 mm and a circular back plate 4 having a diameter of 50 mm at both ends, and is connected by a bridge plate 5 having a rectangular cross section near the upper end. The central vertical section is a U-shaped plate that is a U-shaped plate, and is a through-hole 6 that is opened in advance from the outer surface plate 3a to the rear surface plate outer 4a through the ALC outer wall material A. Various female screw mechanisms 7 that can be fitted are processed.
[0012]
FIG. 2 is an explanatory diagram showing a construction sequence. Although not shown in the drawings, the cored hole 1 and the through hole 6 are drilled at a predetermined location on the surface A1 of the ALC exterior material by a mounting guide of the support fitting 2 with a φ50 hole saw and a φ10 drill. The cored hole 1 is inserted from the back plate 4 side of the support metal fitting 2 and dropped vertically into the back surface A2 of the ALC outer wall material, and the screw 8 is fixed to the female screw mechanism 7 of the back plate through the through hole 6 from the outer surface plate 3a. To do. Further, the extracted core 1a of the ALC outer wall material is returned to its original position, and a sealing material 10 is injected into the gap to perform a water stop treatment. Further, if necessary, the base material B of the new outer wall material C is attached by sticking a rubber pad for unevenness adjustment to the outer surface plate 3a.
[0013]
FIG. 3 is an explanatory view showing a partially enlarged cross section of the repairing device 9 using the support fitting 2 of the present invention. The screw 8 is inserted into the through hole 6 from the outer surface plate outer side 3a toward the rear surface plate outer side 4a. A female screw mechanism 7 having a burring process 12 is formed below the back plate, thereby facilitating fitting and stability.
[0014]
The female screw mechanism 7 by the burring process 12 can process the back plate 4 main body as it is as shown in FIG. 3, but various female screw mechanisms 7 are formed as separate members as shown in FIG. It can be combined and integrated. (A) is an inverted T type with an inner screw processed, (b) is a fallen H type with an inner screw, (c) is a T type with an inner screw processed, (d) is a tapered inverted T type, (e ) Is a tapered T type, and (f) is an inverted T type with inner and outer threads.
[0015]
FIG. 4 shows a central longitudinal section of the repair device 9, and the screw 8 penetrates the ALC outer wall material A to ensure the positioning of the repair device 9. In the embodiment, an example is shown in which the through-hole 6 is formed vertically downward, but it can be formed at an arbitrary position near the circumference around the core 1a.
[0016]
FIG. 5 shows another embodiment. It is explanatory drawing which shows the example set as the structure directly fixed to the building frame E of a building in the presence of two or more support metal fittings 2 which penetrate the ALC outer wall material A, and is cylindrically fixed to the building frame E such as a beam The metal fitting D is fixed and used together with the support metal fitting 2. Although FIG. 5 shows an example of a vertically-extended new outer wall material C, various outer wall material shapes such as laterally and obliquely can be adopted as required.
[0017]
FIG. 6 is a cross-sectional view showing the main part of FIG. 5 extracted above. Since most of the load of the new outer wall material C and the base material B is applied to the housing E via the fixing metal D, the support metal 2 is There is little influence on the ALC outer wall material A.
[0018]
7 and 8 show other embodiments of the support fitting 2 according to the present invention. That is, FIG. 7 (a) shows the back plate 4 as a square, the front plate 3 as a semicircular shape, and the cross section of the bridge plate 5 having the same diameter as the circumferential arc of the core 1a. In the embodiment, the back plate 4 has a large size and the middle half or more is the stopper piece 11, and in the embodiment, the bridge plate 5 has the same diameter as the circumferential arc of the core 1a and has a width toward the back plate 4. Δd is formed so that ΔW gradually decreases, (d) is the above (b), the size of the stopper piece 11 of the back plate 4 is about 1/3, and the front plate 3 is a square shape, (e ) Shows an example in which the back plate 4 is formed in a vertically long circle shape in (d), and (f) shows an example in which the stopper piece 11 is slightly protruded about 1/5 of the total height in (e).
[0019]
8A is an example in which the stopper piece 11 is not formed in FIG. 7D, FIG. 8B is a diagram in which the front and back plates 3 and 4 are formed in a semicircular shape, and FIG. 8C is the above (a), (B) combined, (d) front and back plates 3, 4 are formed in a circular shape, and the bridge plate 5 is rectangular in cross section, (e) is the plates 3 in (d) above, 4 is a square shape, (f) is a plate-like shape of both plates 3, 4, (g) is a front and back plate 3, 4 supporting metal fittings combined with the above (d) and (f) 2.
[0020]
【The invention's effect】
As described above, according to the repair device for an ALC outer wall material according to the present invention, (1) Since it is not necessary to dismantle the existing ALC outer wall material, there is no problem in shortening the construction period, suspending residence or use, and the like. (2) The total cost can be reduced by minimizing the number of construction steps. (3) Since it has a double wall structure of an existing wall and a new wall, it is rich in heat insulation, soundproofing, and fireproofing. (4) The support fitting does not fluctuate during construction, or is not displaced by an earthquake or the like, and the foundation construction of the new outer wall material becomes stable. (5) The load on the existing ALC wall can be minimized, and the mounting strength of the new wall material can be sufficiently secured. (6) By using the mounting guide, it is possible to construct a stable support bracket. (7) Because it is a renovation that leaves the existing outer wall material, the problem of fire prevention performance standards can be cleared. There are features and effects.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a representative example of an ALC outer wall material repairing apparatus according to the present invention.
FIG. 2 is an explanatory view showing a procedure for repairing an ALC outer wall material according to the present invention.
FIG. 3 is an explanatory view showing a construction state of the repair device for an ALC outer wall material according to the present invention.
FIG. 4 is an explanatory view showing a construction state of the repair device for an ALC outer wall material according to the present invention.
FIG. 5 is an explanatory view showing a construction state of the repair device for an ALC outer wall material according to the present invention.
FIG. 6 is an explanatory view showing a construction state of the repair device for an ALC outer wall material according to the present invention.
FIG. 7 is an explanatory view showing another embodiment of the repair device for an ALC outer wall material according to the present invention.
FIG. 8 is an explanatory view showing another embodiment of the repair device for an ALC outer wall material according to the present invention.
FIG. 9 is an explanatory view showing another embodiment of burring processing.
[Explanation of symbols]
A ALC outer wall material A1 ALC outer wall material surface A2 ALC outer wall material back surface B Base material C such as vertical trunk edge or horizontal trunk edge New outer wall material D fixing bracket E ALC outer wall casing 1 Core extraction hole 1a Core 2 Support metal fitting 3 surface plate 3a surface plate outside 4 back plate 4a back plate outside 5 bridge plate 6 through hole 7 female screw mechanism 8 screw 9 repair device 10 sealing material 11 stopper piece 12 burring processing

Claims (2)

  A support fitting is inserted from the core hole that penetrates the ALC outer wall material, and the front and back plates of the support fitting are placed between the front and back surfaces of the ALC outer wall material, and are inserted into the back plate from the front plate through the ALC outer wall material. This is a repair device for attaching a new outer wall material to the base material by abutting or fixing a base material such as a vertical trunk edge or a horizontal trunk edge to the outside of the surface plate The metal fittings are formed by a collapsible U-shaped front and back plate in the central longitudinal section, and a bridge plate fixed to the inner surface of both plates by welding or the like, located below the bridge plate, from the outer side of the front plate to the outer side of the rear plate An ALC comprising a through-hole drilled toward the surface, a female screw mechanism formed in the through-hole of the back plate, and a screw that can be screwed into the female screw mechanism. Repair apparatus of the wall material. The repair device for an ALC outer wall material according to claim 1, wherein a part of a plurality of fixing brackets supporting the new outer wall material and the base material is fixed to a building frame such as a beam or a column.

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