JP6983465B2 - Repair structure of sheet waterproof structure and repair method of sheet waterproof structure - Google Patents

Description

The present invention relates to a repair structure and a repair method of a sheet waterproof structure.

Conventionally, a waterproof sheet has been laid on a waterproof structure such as a rooftop, a roof, or an outer wall of a building. There are two methods for constructing the waterproof sheet, the adhesive method and the mechanical fixing method (insulation method), and the mechanical fixing method, which does not require waiting for the adjustment of the base and drying, is often adopted because the construction period can be shortened.

The mechanical fixing method includes a pre-installation method and a post-installation method. In the pre-attachment method, a fixing piece made of a steel plate or the like whose upper surface is coated with a heat-welded layer such as a thermoplastic resin or a hot melt adhesive in advance on the base on which the waterproof sheet is laid is fixed to the base with a fixing tool such as a screw. This is a construction method in which a waterproof sheet is laid on the base and the fixed piece is heated from above the waterproof sheet by an induction heating device to fix the fixed piece and the waterproof sheet. In the retrofit method, first lay a waterproof sheet on the base, then fix the fixing piece such as a holding metal fitting to the base with a fixing tool such as a screw, and then cover the fixing piece and the waterproof sheet around it with an additional tension sheet and bond it. It is a method of fixing. A plurality of fixing pieces are used to fix the waterproof sheet to the base, and the fixing pitch between the fixing pieces is determined so as to have sufficient fixing strength to withstand the wind pressure.

In the sheet waterproof structure, the waterproof sheet deteriorates over time due to long-term use, so it is necessary to repair it with a new waterproof sheet. When repairing an existing waterproof structure to which a waterproof sheet is installed by the above-mentioned mechanical fixing method, the repair is performed while leaving the existing fixing pieces and the waterproof sheet. Patent Document 1 is a method of repairing a sheet waterproof structure in which an existing waterproof sheet is laid by an insulation method, and the repair joint pieces are distributed at predetermined positions between the first joint pieces which are the existing joint pieces. Disclosed is a method of arranging and fixing the tarpaulin on an existing waterproof sheet, laying a tarpaulin for repair on the tarpaulin, and adhering the tarpaulin to the joint piece for repair.

Japanese Patent No. 4056634

However, in this case, since the repaired joint piece is placed at a position shifted from the fixed position of the existing joint piece, it is necessary to perform positioning work such as marking out in order to newly position the fixed position of the repaired joint piece. There was a problem that it took time and effort. Further, in the second repair, the existing joint piece and the joint piece for the first repair must be avoided and the joint piece for the second repair must be arranged, which makes positioning more difficult.

The present invention solves such a problem, and when repairing an existing sheet waterproof structure to which a waterproof sheet is installed by a mechanical fixing method, the repair structure of the sheet waterproof structure that can easily position the fixed piece. And the purpose is to provide a method of repairing the sheet waterproof structure.

The outline of the means taken by the present invention to achieve the above object is to install and fix the fixing piece for repair at substantially the same position as the fixing piece of the existing sheet waterproof structure. That is, by installing and fixing the repair fixing piece at the same position as the existing fixing piece, it is not necessary to newly position the fixing piece.

Specifically, the existing waterproof sheet, which is a waterproof sheet, is fixed to the base of the flat ground, which is a base having a flat ground and a rising edge, by an existing fixing piece, which is a fixing piece whose side end is fixed along the rising ground. It is a repair structure of the sheet waterproof structure, which is a repair fixing piece arranged on the existing fixing piece, a repair waterproof sheet fixed by the repair fixing piece, and the repair fixing piece. A plurality of fixtures that penetrate and are driven into the base, and the repair fixing piece forms an L-shaped cross section with a rising portion that covers the rising base, and overlaps with the existing fixing piece. portion and (except for the rising portion), and a said overlap residual excluding the portion portions at both ends sandwiching the overlapping portion (including the rising portion), the fixture is penetrated to the remainder of said end It is a refurbished structure of the waterproof structure of the sheet.
According to the above-mentioned repair structure, the repair fixing piece has an overlapping portion overlapping with the existing fixing piece, and the repair fixing piece is arranged at substantially the same position as the existing fixing piece, so that no new positioning work is required. In addition, the repair fixing piece has a residual part excluding the overlapping part that overlaps with the existing fixing piece, and when the repair fixing piece is fixed to the base with a fixing tool such as a screw, the fixing tool is driven into this remaining part. It can be directly fixed to the base without using the existing fixing piece, so that the repair fixing piece can be reliably fixed to the base even if the fixing strength between the existing fixing piece and the base is weakened.

Further, the existing waterproof sheet, which is a waterproof sheet, is fixed to the base of the flat ground, which is a base having a flat ground and a rising edge, by an existing fixing piece, which is a fixing piece whose side end is fixed along the rising ground. It is a method of repairing a sheet waterproof structure, in which a repair fixing piece is placed on the existing fixing piece, and the repair fixing piece has an L-shaped cross section provided with a rising portion that covers the rising base. Te, arranged to have said existing fixed piece and overlapping the overlapped part (the rising excluding part) and the overlapping remaining portion excluding the portions at both ends sandwiching the overlapping portion (including the rising portion), said end In the remaining portion of the above, a plurality of fixtures are driven into the base from above the repair fixing piece to fix the repair fixing piece to the base, and the repair waterproof sheet is placed on the repair fixing piece and the existing waterproof sheet. Is a method for repairing a sheet waterproof structure, characterized in that the upper surface of the repair fixing piece and the lower surface of the repair waterproof sheet are joined to each other. By adopting such a repair method, the fixing piece for repair can be easily positioned, and the fixing piece for repair can be reliably fixed to the base. In addition, the repair structure obtained by this repair method has an excellent appearance.

Furthermore, the existing waterproof sheet, which is a waterproof sheet, is fixed to the base of the flat ground, which is a base having a flat ground and a rising edge, by an existing fixing piece, which is a fixing piece whose side end is fixed along the rising ground. It is a method of repairing the waterproof structure of the existing sheet, in which the waterproof sheet for repair is laid on the existing waterproof sheet, and the fixed piece for repair is placed on the waterproof sheet for repair located above the existing fixed piece. both ends of the renovation fixing piece, form a L-shaped cross section having a rising portion covering the rise of the base, across the overlapping parts as overlap overlapping the existing fixed piece (except for the rising portion) Te the overlapping arranged to have a remaining portion except the portion (including the rising portion), fixing the implanted plurality of fasteners from the top of the renovation fixing piece in the remainder of said end to the underlying repair in It is a method of repairing a sheet waterproof structure, characterized in that a piece and the waterproof sheet for repair are fixed to the base. By adopting such a repair method, the fixing piece for repair can be easily positioned, and the fixing piece for repair can be reliably fixed to the base. In addition, the repair structure obtained by this repair method has excellent fixing strength of the repair waterproof sheet.

According to the present invention, since it is sufficient to superimpose the repair fixing piece at almost the same position as the existing fixing piece of the existing sheet waterproof structure, a new marking operation is performed in order to position the repair fixing piece at the time of repair. Workability of repair work is improved without the need to do it. Further, since the repair fixing piece is directly fixed to the base without going through the existing fixing piece, the existing fixing piece can be reliably fixed to the base even if the fixing strength between the existing fixing piece and the base is weakened.

It is sectional drawing of 1st Embodiment of the repair structure of a sheet waterproof structure. It is sectional drawing of the 2nd Embodiment of the repair structure of a sheet waterproof structure. It is a top view of the embodiment of the fixed piece for repair. It is sectional drawing of the 3rd Embodiment of the repair structure of a sheet waterproof structure. It is sectional drawing of the 4th Embodiment of the repair structure of the sheet waterproof structure. It is explanatory drawing of the existing sheet waterproof structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The repair structure and the repair method of the sheet waterproof structure of the present invention relate to the repair of the existing sheet waterproof structure in which the waterproof sheet is applied to the base by the mechanical fixing method. FIG. 6 shows an existing sheet waterproof structure in which a waterproof sheet is installed on the roof of a building by a pre-installation method of a mechanical fixing method. The bases 4 and 4'are a flat ground G and a rising W, respectively. FIG. 6 shows an example of a sheet waterproof structure by a pre-attached method of a general mechanical fixing method, and the flat ground G is covered with an existing waterproof sheet 6. In the central portion excluding the peripheral edge of the flat ground G, the disk-shaped existing fixing piece 5 is fixed to the base 4 by the fixing tool 7, and the upper surface of the existing fixing piece 5 and the lower surface of the existing waterproof sheet 6 are fixed with an adhesive or the like. There is. A long flat plate-shaped existing fixing piece 5'is fixed to the base 4 by a fixture 7'near the boundary with the rising W, which is the peripheral edge of the flat ground G, and the upper surface of the existing fixing piece 5'and the lower surface of the existing waterproof sheet 6 Is fixed with an adhesive or the like.

The modified structure of the sheet waterproof structure of the present invention will be described with reference to FIG.
The existing fixing piece 5 of FIG. 1 is fixed to the base 4 with a fixture 7. The existing waterproof sheet 6 is arranged on the existing fixing piece 5, and the lower surface of the existing waterproof sheet 6 and the upper surface of the existing fixing piece 5 are adhesively fixed. Then, the repair fixing piece 1 is arranged on the existing fixing piece 5 via the existing waterproof sheet 6, and is fixed to the base 4 by the fixing tool 3. The repair fixing piece 1 has an overlapping portion 11 that overlaps with the existing fixing piece 5, and a residual portion 12 excluding the overlapping portion 11 at both ends thereof, and the fixture 3 avoids the existing fixing piece 5 from above the remaining portion 12. It is driven toward the base 4. The repair waterproof sheet 2 is arranged on the repair fixing piece 1, and the lower surface of the repair waterproof sheet 2 and the upper surface of the repair fixing piece 1 are adhesively fixed.

Here, it is preferable that the repair fixing piece 1 is arranged at substantially the same position as the existing fixing piece 5 with respect to the base 4. Since the fixed pitch of the existing fixed piece 5 is calculated and installed at the time of its installation, the repair fixed piece 1 is placed at almost the same position as the existing fixed piece 5, so that the existing fixed piece 5 can be repaired without newly positioning the installation position. Sufficient fixing strength can also be obtained for the repair waterproof sheet 2 fixed to the fixing piece 1.

The repair fixing piece 1 will be described with reference to FIG.
The repair fixing piece 1 is basically made of a flat plate, and when it is placed on top of the existing fixing piece fixed to the base, the overlapping portion 11 overlapping the existing fixing piece and the residual portion 12 excluding the overlapping portion 11 It is characterized by having. FIG. 3 shows a plan view seen from above when the repair fixing piece 1 is placed on the existing fixing piece. The circular shape shown by the dotted line in the figure indicates the outer circumference of the existing fixed piece.

The shape of the fixing piece 1 for repair may be a flat plate shape, such as a circular shape such as (3-1), an elliptical disk shape such as (3-2), or (3-3), (3). Other shapes such as a rectangular plate like -4) can be taken. When the repair fixed piece 1 is overlapped with the existing fixed piece, the remaining portion 12 excluding the overlapping portion 11 that overlaps with the existing fixed piece is formed on the entire circumference of the existing fixed piece as in (3-1) and (3-3). It may have, or may have a residual portion 12 in a part around the existing fixed piece as in (3-2) and (3-4). When the outer circumference of the repair fixing piece 1 is overlapped with the existing fixing piece, it is sufficient that at least a part thereof is outside the outer circumference of the existing fixing piece. A part of the outer circumference may be provided outside the outer circumference of the existing fixed piece. When the remaining portion 12 is provided around the entire periphery of the existing fixed piece as in (3-1) and (3-3), that is, when the outer circumference of the repair fixed piece 1 is overlapped with the existing fixed piece, the whole is If it is held on the outside of the outer circumference of the existing fixing piece, the space for driving the fixing tool 3 can be increased, so that the number of the fixing tool 3 to be driven can be increased, thereby fixing the fixing piece 1 for repair to the base. The strength can be improved.

Subsequently, a specific embodiment of the modified structure of the sheet waterproof structure will be described with reference to the drawings.

The first embodiment of the modified structure of the sheet waterproof structure will be described with reference to FIG.
The existing fixed piece 5a in FIG. 1 is a disk-shaped steel plate whose upper surface is coated with a vinyl chloride resin (not shown). It is fixed to the base 4a, which is concrete, with a fixture 7a, which is a metal screw. The existing waterproof sheet 6a is a waterproof sheet made of vinyl chloride resin, and the upper surface of the existing fixing piece 5a and the lower surface of the existing waterproof sheet 6a are welded and fixed. Then, on the existing fixing piece 5a, a fixing piece 1a for repair, which is a steel plate whose upper surface is coated with a vinyl chloride resin (not shown) via an existing waterproof sheet 6a, is arranged, and a fixing tool 3a, which is a metal screw, is used. It is fixed to the base 4a. The repair fixing piece 1a has an overlapping portion 11 that overlaps with the existing fixing piece 5a and a remaining portion 12 excluding the overlapping portion 11 around the overlapping portion 11, and the fixture 3a is driven toward the base 4a from the upper side of the remaining portion 12. ing. A repair waterproof sheet 2a, which is a vinyl chloride resin waterproof sheet, is placed over the repair fixing piece 1a and the existing waterproof sheet 6a, and the upper surface of the repair fixing piece 1a and the lower surface of the repair waterproof sheet 2a are welded together. It is fixed.

A second embodiment of the modified structure of the sheet waterproof structure will be described with reference to FIG.
The existing fixed piece 5a in FIG. 2 is a disk-shaped steel plate whose upper surface is coated with a vinyl chloride resin (not shown). It is fixed to the base 4a, which is concrete, with a fixture 7a, which is a metal screw. The existing waterproof sheet 6a is a waterproof sheet made of vinyl chloride resin, and the upper surface of the existing fixing piece 5a and the lower surface of the existing waterproof sheet 6a are welded and fixed. A repair waterproof sheet 2a, which is a waterproof sheet made of vinyl chloride resin, is arranged over the existing waterproof sheet 6a, and vinyl chloride on the upper surface of the existing fixed piece 5a via the existing waterproof sheet 6a and the repair waterproof sheet 2a. A fixing piece 1a for repair, which is a steel plate coated with a based resin (not shown), is arranged and fixed to the base 4a by a fixing tool 3a, which is a metal screw. The repair fixing piece 1a has an overlapping portion 11 that overlaps with the existing fixing piece 5a and a remaining portion 12 excluding the overlapping portion 11 around the overlapping portion 11, and the fixture 3a is driven toward the base 4a from the upper side of the remaining portion 12. ing. An additional sheet 8a, which is a waterproof sheet made of vinyl chloride resin, is arranged over the repair fixing piece 1a and the repair waterproof sheet 2a, and the upper surface of the repair fixing piece 1a and the lower surface of the extension sheet 8a are welded and fixed. The end portion of the additional sheet 8a is treated by the sealing 9.

A third embodiment of the modified structure of the sheet waterproof structure will be described with reference to FIG.
The existing fixed piece 5b in FIG. 4 is a long flat steel plate whose upper surface is coated with a vinyl chloride resin (not shown). The existing fixing piece 5b is arranged on a flat base 4a which is concrete so that one end of the longitudinal side is along the rising base 4'a, and is fixed by a fixing tool 7a which is a metal screw. The existing waterproof sheet 6a is a waterproof sheet made of vinyl chloride resin, and the upper surface of the existing fixing piece 5b and the lower surface of the existing waterproof sheet 6a are welded and fixed. The existing waterproof sheet 6'a is fixed to the rising base 4'a, the lower end portion thereof is welded to the existing waterproof sheet 6a, and the end portion is treated by the sealing 9. Then, on the existing fixing piece 5b, a fixing piece 1b for repair, which is a long flat steel plate coated with a vinyl chloride resin on the upper surface via the existing waterproof sheets 6a and 6'a (not shown), is arranged. , It is fixed to the base 4a by the fixing tool 3a which is a metal screw. The repair fixed piece 1b is formed to be slightly wider than the existing fixed piece 5b, and the repair fixed piece 1b has an overlapping portion 11 that overlaps with the existing fixed piece 5b and a residual portion 12 around the overlapping portion 11 excluding the overlapping portion 11. , The fixture 3a is driven toward the base 4a from the upper side of the residual portion 12. A repair waterproof sheet 2a, which is a waterproof sheet made of vinyl chloride resin, is arranged over the repair fixing piece 1b and the existing waterproof sheet 6a, and the upper surface of the repair fixing piece 1b and the lower surface of the repair waterproof sheet 2a are welded together. The repair waterproof sheet 2'a is fixed to the outside of the fixed and rising existing waterproof sheet 6'a, the lower end portion thereof is welded to the repair waterproof sheet 2a, and the end portion is treated with the sealing material 9.

A fourth embodiment of the modified structure of the sheet waterproof structure will be described with reference to FIG.
The existing fixed piece 5b in FIG. 5 is a long flat steel plate having a vinyl chloride resin coated on the upper surface (not shown). The existing fixing piece 5b is arranged on a flat base 4a which is concrete so that one end of the longitudinal side is along the rising base 4'a, and is fixed by a fixing tool 7a which is a metal screw. The existing waterproof sheet 6a is a waterproof sheet made of vinyl chloride resin, and the upper surface of the existing fixing piece 5b and the lower surface of the existing waterproof sheet 6a are welded and fixed. The existing waterproof sheet 6'a is fixed to the rising base 4'a, the lower end portion thereof is welded to the existing waterproof sheet 6a, and the end portion is treated by the sealing 9. A fixed piece for repair, which is a long flat plate steel plate having an L-shaped cross section and whose surface is coated with a vinyl chloride resin (not shown) via existing waterproof sheets 6a and 6'a on the existing fixing piece 5b. The 1c is arranged so that its L-shaped rising portion abuts on the rising base 4'a, and is fixed to the flat base 4a and the rising base 4'a by a fixing tool 3a which is a metal screw. The L-shaped horizontal portion of the repair fixed piece 1c is formed to be slightly wider than the existing fixed piece 5b, and the repair fixed piece 1c excludes the overlapping portion 11 overlapping the existing fixed piece 5b and the overlapping portion 11 around it. It has a residual portion 12, and the fixture 3a is driven from the upper side of the residual portion 12 toward the base 4a on a flat surface. The L-shaped rising portion of the repair fixing piece 1c is also a residual portion 12, and the fixture 3a is driven from the outside of the residual portion 12 toward the rising base 4'a. A repair waterproof sheet 2a, which is a waterproof sheet made of vinyl chloride resin, is placed over the repair fixing piece 1c and the existing waterproof sheet 6a, and the surface of the repair fixing piece 1c and the lower surface of the repair waterproof sheet 2a are welded together. The repair waterproof sheet 2'a is fixed to the outside of the existing waterproof sheet 6'a that is fixed and rises, and the lower end portion thereof is welded to the rising portion of the repair fixing piece 1c and the repair waterproof sheet 2a, and the end portion is welded. It is treated with the sealing material 9.

Although the embodiment of the modified structure of the sheet waterproof structure has been described above, the present invention is not limited to these embodiments. Next, each configuration will be described with an example.

The repair fixing piece 1 and the existing fixing piece 5 are plate-shaped members, and preferably have a hole penetrating in the thickness direction for driving the fixing tool 3, and the head of the fixing tool is accommodated around the hole. It is preferable that a counterbore is provided for this purpose. The thickness of the fixed piece 1 for repair and the existing fixed piece 5 is about 0.5 mm to 2.0 mm, and the shape is arbitrary such as a square or rectangular rectangular plate, a circular or elliptical disk, or a long shape. Is. The fixed piece 1 for repair and the existing fixed piece 5 are made of metal, hard synthetic resin, wood, or the like. Of these, metal is preferable from the viewpoint of strength and durability. As the material of the steel plate that constitutes the metal fixing disc, a steel plate that does not easily rust even in high humidity conditions such as a stainless steel plate or a steel plate that has been subjected to rust-preventive treatment such as zinc / aluminum / magnesium plating or zinc plating is suitable. Used for.

The repair fixing piece 1 and the existing fixing piece 5 can have a structure having an adhesive layer on the surface thereof, whereby the repair fixing piece 1 and the existing fixing piece 5 are added to the repair waterproof sheet 2 and the existing waterproof sheet 6. It is a preferable form because it can be adhered to the tension sheet 8. The adhesive layer includes various adhesives such as acrylic, urethane, epoxy, nitrile rubber, and styrene-butadiene rubber, and thermoplastic resin coating layers such as polyvinyl chloride resin, polyolefin resin, and acrylic resin. Further, a sealing material in which a composition of a thermoplastic resin such as a polyvinyl chloride resin or an acrylic resin is dissolved in a solvent can be used. In the above-described embodiment, a vinyl chloride resin coating layer, which is a thermoplastic resin coating layer, is laminated and integrated on the upper surfaces of the repair fixing piece 1 and the existing fixing piece 5. Considering the bonding strength, it is preferable to use the same material as the repair waterproof sheet 2, the existing waterproof sheet 6, the additional tension sheet 8, and the thermoplastic resin coating layer, and the repair waterproof sheet 2, the existing waterproof sheet 6 are preferable. When the additional sheet 8 is made of vinyl chloride resin, it is preferable that the thermoplastic resin coating layer of the repair fixing piece 1 and the existing fixing piece 5 is also made of vinyl chloride resin. Further, the adhesive layer is not only provided in advance on the upper surfaces of the repair fixing piece 1 and the existing fixing piece 5, but may be newly provided at the time of construction.

As the repair waterproof sheet 2, the existing waterproof sheet 6, and the additional sheet 8, a thermoplastic resin waterproof sheet is preferably used, and vinyl chloride resin-based, polyolefin-based, acrylic-based, and the like can be used.
The tarpaulin 2 for repair, the existing tarpaulin 6, and the additional sheet 8 may be a single layer of a thermoplastic resin layer, but glass cloth, glass non-woven fabric, polyester cloth, and polyester non-woven fabric are excellent in terms of dimensional stability and tensile strength. A multi-layer product in which a base material layer such as the above is laminated is preferable. The base material layer may be provided at the bottom layer, but may be provided in the middle of the thermoplastic resin layer. Further, the thermoplastic resin layer may be a single layer or a plurality of layers, and the composition of each layer may be different.

The fixture 3 and the fixture 7 are for fixing the repair fixing piece 1 and the existing fixing piece 5 to the base 4, and can be driven into the base 4 such as screws, bolts, and nails, and are made of metal. Screws can be preferably used. As the material, steel materials such as carbon steel, alloy steel, and stainless steel can be used. In addition, the shape of the screw head of the screw should be a plate, flat, or pan so that the head does not protrude from the upper surface of the fixing piece 1 for repair or the existing fixing piece 5, and the concave shape of the seat surface to be hung with a screwdriver or wrench is a cross. Holes, hexagonal holes, and square holes are preferred.

The base 4 is a frame such as a rooftop of a building, a veranda, a balcony, etc., and a concrete base, a metal base, lightweight foamed concrete (ALC), a steel material, a wood material, or the like is used. Further, another layer such as an inorganic plate or a mortar material layer may be laminated on the base 4. In the above-described embodiment, the base 4 is a concrete base.

Next, a method of repairing the waterproof structure of the sheet will be described.

The first repair method will be described with reference to FIG.
As a method of repairing the existing waterproof sheet structure in which the existing waterproof sheet 6 is fixed to the base 4 as shown in FIG. 1 by the existing fixing piece 5 and the fixture 7, first, the repair fixing piece 1 is attached to the existing waterproof sheet 6. Place it on top of the existing fixing piece 5 via. Next, the fixture 3 is driven into the base 4 from the position where the existing fixing piece 5 and the repair fixing piece 1 do not overlap, that is, from the remaining portion 12 of the repair fixing piece 1, and the repair fixing piece 1 is fixed to the base 4. do. Subsequently, the repair waterproof sheet 2 is laid over the repair fixing piece 1 and the existing waterproof sheet 6, and the upper surface of the repair fixing piece 1 and the lower surface of the repair waterproof sheet 2 are joined.

Here, taking the case of the first embodiment of the repair structure described above as an example, the fixing tool 3a which is a metal screw is driven into the base 4a which is concrete to fix the fixing piece 1a for repair. In this case, the existing fixing piece 1a is fixed in advance. A pilot hole can be drilled in the waterproof sheet structure and the base 4a with a drill or the like. Further, in order to improve the fixing strength of the fixing tool 3a, which is a metal screw, to the base 4a, it is also possible to insert the anchor plug into the prepared hole made in the base 4a and then fix the fixing tool 3a.
As a method of joining the upper surface of the repair fixing piece 1a, which is a steel plate having a vinyl chloride resin coated on the upper surface (not shown), and the lower surface of the repair waterproof sheet 2a, which is a waterproof sheet made of vinyl chloride resin. Heat welding can be performed by induction heating. Other joining methods include solvent welding in which a soluble solvent such as tetrahydrofuran is applied to the upper surface of the repair fixing piece 1a and the lower surface of the repair waterproof sheet 2a for pressure bonding, and other bonding with an adhesive.
Also, before fixing the repair fixing piece 1a in order to prevent the transfer of compounding components such as plasticizer due to contact between the existing waterproof sheet 6a made of vinyl chloride resin and the repair waterproof sheet 2a made of vinyl chloride resin. It is also possible to lay an insulating sheet such as a foamed polyethylene sheet on the existing waterproof sheet 6a in advance.

The second repair method will be described with reference to FIG.
As a method of repairing the existing waterproof sheet structure in which the existing waterproof sheet 6 is fixed to the base 4 as shown in FIG. 2 by the existing fixing piece 5 and the fixture 7, first, the repair waterproof sheet is placed on the existing waterproof sheet 6. 2 is laid. Next, the repair fixing piece 1 is arranged on the existing fixing piece 5 via the existing waterproof sheet 6 and the repair waterproof sheet 2. Subsequently, the fixing tool 3 is driven into the base 4 from the position where the existing fixing piece 5 and the repair fixing piece 1 do not overlap, that is, from the remaining portion 12 of the repair fixing piece 1, and the repair fixing piece 1 is fixed to the base 4. do.
In order to prevent water leakage from the driving portion of the fixture 3, it is preferable to further lay an additional tension sheet 8 on the repair fixing piece 1 and the repair waterproof sheet 2. It is more preferable to apply a sealing 9 to the end portion of the additional sheet 8 to improve the watertightness and to treat the end portion.

Here, taking the case of the second embodiment of the repair structure described above as an example, the fixing tool 3a which is a metal screw is driven into the base 4a which is concrete to fix the fixing piece 1a for repair. In this case, the existing fixing piece 1a is fixed in advance. A pilot hole can be drilled in the waterproof sheet structure and the base 4a with a drill or the like. Further, in order to improve the fixing strength of the fixing tool 3a, which is a metal screw, to the base 4a, it is also possible to insert the anchor plug into the prepared hole made in the base 4a and then fix the fixing tool 3a.
The upper surface of the fixing piece 1a for repair, which is a steel plate whose upper surface is coated with vinyl chloride resin (not shown), the tarpaulin 2a for repair, which is a tarpaulin made of vinyl chloride resin, and the tarpaulin made of vinyl chloride resin. As a method of joining the lower surface of the additional sheet 8a, a soluble solvent such as tetrahydrofuran is applied to the upper surface of the repair fixing piece 1a and the repair waterproof sheet 2a and the lower surface of the additional sheet 8a and pressure-bonded. Tarpaulin can be welded. Further, the thermal welding by the induction heating and the solvent welding may be combined. Further, it may be joined with another adhesive or the like.
Also, before laying the repair waterproof sheet 2a in order to prevent the transfer of compounding components such as plasticizers due to contact between the existing waterproof sheet 6a made of vinyl chloride resin and the repair waterproof sheet 2a made of vinyl chloride resin. It is also possible to lay an insulating sheet such as a foamed polyethylene sheet on the existing waterproof sheet 6a in advance.

The present invention is not limited to the embodiment described above, and can be applied to, for example, the modification of an existing waterproof sheet structure by a retrofitting method. In addition to this, various forms can be taken within the technical idea of the present invention.

According to the repair structure and the repair method of the sheet waterproof structure of the present invention, when repairing the existing sheet waterproof structure to which the waterproof sheet is applied by the mechanical fixing method, no new positioning work such as marking is performed. Since the fixed piece can be easily positioned, it can be suitably used for repairing the existing waterproof structure of the sheet by the mechanical fixing method. It is also possible to deal with the second and subsequent repairs.

1 Fixing piece for repair 11 Overlapping part 12 Residual part 2,2'Waterproof sheet for repair 3 Fixture 4,4' Base G Flat ground W Rise 5,5'Existing fixing piece 6,6'Existing waterproof sheet 7,7'Fixed Ingredients 8 Tarpaulin 9 Sealing

Claims (4)

A sheet waterproofing sheet in which an existing waterproof sheet, which is a tarpaulin, is fixed by an existing fixing piece, which is a fixed piece whose side end is fixed along the rising base on the flat ground, which is a base having a flat ground and a rising base. It is a structural repair structure,
The repair fixing piece placed on the existing fixing piece,
The repair waterproof sheet fixed by the repair fixing piece,
A plurality of fixtures that penetrated the repair fixing piece and were driven into the base,
Equipped with
The renovation fixing piece, form a L-shaped cross section having a rising portion covering the rise of the base, across the the existing fixed piece overlaps the overlapping portion (excluding the rising portion), the overlapping portion at both ends and a said overlap remaining portion excluding the portion (including the rising portion) in,
A modified structure of a sheet waterproof structure in which the fixture is penetrated through the remaining portions at both ends. A sheet waterproofing sheet in which an existing waterproof sheet, which is a tarpaulin, is fixed to the base of the flat ground, which is a base having a flat ground and a rising edge, by an existing fixing piece, which is a fixing piece whose side end is fixed along the rising ground. It ’s a structural repair method.
The repair fixing piece is placed on the existing fixing piece, and the repair fixing piece has an L-shaped cross section having a rising portion covering the rising base, and the overlapping portion overlaps with the existing fixing piece. place to have a (the rise excluding part) and the overlapping remaining portion excluding the portions at both ends sandwiching the overlapping portion (including the rising portion)
In the remaining portions at both ends, a plurality of fixtures are driven into the base from above the repair fixing piece to fix the repair fixing piece to the base.
A waterproof sheet for repair is laid on the fixed piece for repair and the existing waterproof sheet.
A method for repairing a sheet waterproof structure, which comprises joining the upper surface of the repair fixing piece and the lower surface of the repair waterproof sheet. A sheet waterproofing sheet in which an existing waterproof sheet, which is a tarpaulin, is fixed to the base of the flat ground, which is a base having a flat ground and a rising edge, by an existing fixing piece, which is a fixing piece whose side end is fixed along the rising ground. It ’s a structural repair method.
A waterproof sheet for repair is laid on the existing waterproof sheet,
The repair fixing piece is placed on the repair waterproof sheet located above the existing fixing piece, and the repair fixing piece has an L-shaped cross section having a rising portion covering the rising base. , arranged to have said existing fixed piece and overlapping the overlapped part (the rising excluding part) and the overlapping remaining portion excluding the portions at both ends sandwiching the overlapping portion (including the rising portion)
Repair of a sheet waterproof structure, characterized in that a plurality of fixtures are driven into the base from above the repair fixing pieces in the remaining portions at both ends, and the repair fixing piece and the repair waterproof sheet are fixed to the base. Method. A sheet in which an existing waterproof sheet, which is a waterproof sheet, is fixed by existing fixing pieces, which are a plurality of fixed pieces fixed at a fixed pitch determined on the base of the flat field except for the peripheral edge of the flat field, which is a base having a flat ground and a rising edge. It is a refurbished structure of the waterproof structure,
The repair fixing piece placed on the existing fixing piece,
The repair waterproof sheet fixed by the repair fixing piece,
A plurality of fixtures that penetrated the repair fixing piece and were driven into the base,
Equipped with
The repair fixing piece has an overlapping portion that overlaps with the existing fixing piece and a residual portion excluding the overlapping portion at both ends of the overlapping portion.
A modified structure of a sheet waterproof structure in which the fixture is penetrated in the residual portion.

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