JP7274248B2 - Waterproof structure, construction method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fixture used in an internal corner having a rising wall of a waterproof structure such as a roof, a veranda, etc., a waterproof structure using the fixture, and a construction method.

BACKGROUND ART Conventionally, waterproofing construction using a waterproof sheet has been carried out for waterproofing the framework of verandas, balconies, flat roofs, and the like. Here, in some cases, the frame has a rising wall provided in a vertical direction from the horizontal plane of the frame, such as a parapet portion or a mount for rooftop equipment such as a solar panel. In such a case, it is necessary to fix the waterproof sheet so that it does not peel off because the load is concentrated on the waterproof sheet due to the wind pressure and the movement of the frame at the internal corner composed of the horizontal surface of the frame and the rising wall. . In many cases, in order to secure the fixing strength and durability of the inside corner, a method is used in which fixtures made of steel plates or the like are attached along the rising wall and the waterproof sheet is fixed to the fixtures.

The fixture is usually mechanically fixed to the horizontal surface of the substrate with screws or the like, or adhered to the substrate with an adhesive. When multiple baseboards such as insulation materials and reinforcing plates are laminated under the waterproof sheet (frame side), the fixtures are placed in contact with the waterproof sheet, and the baseboards placed below the fixtures are placed in contact with each other. Fix it to the base by penetrating it with a screw or the like. As another method, a fixture is adhered onto the base plate, and a waterproof sheet is joined on the base plate and the fixture.

Patent Document 1 discloses a heat insulation waterproof structure for a roof comprising a foundation, a rising part rising from the foundation, and a plurality of layers laminated on the upper surface of the foundation and including at least a heat insulation layer and a waterproof layer, The edging hardware is fixed to the layer on which the edging hardware is arranged by using an adhesive. , a roof waterproof structure is disclosed.
In addition, the edging hardware includes a presser plate portion disposed on an upper surface of an end portion of any one of the plurality of layers, and a side end of the presser plate portion facing the rising portion to extend from the upper surface of the base. and a flange portion extending from the lower end of the support portion in the same direction as the pressing plate portion. The edge of the layer up to the layer placed on the roof is fixed to the edge of the layer by arranging the edge of the layer between the retaining plate portion and the flange portion. Structures are also disclosed.

Japanese Patent No. 5534956

However, when the fixture is adhered to the horizontal floor or baseboard as in the prior art such as Patent Document 1, the fixture is lifted from the adhesion surface due to the slope and unevenness of the bonding surface of the horizontal floor and baseboard. There is concern that the fixtures may not be sufficiently fixed to the horizontal floor or the baseboard, such as the fixtures not being partially adhered.
In addition, as disclosed in Patent Document 1, the edge of the layer from the layer where the presser plate portion of the edging metal fitting is arranged to the layer arranged on the upper surface of the base is arranged between the presser plate portion and the flange portion. As a result, in the method of fixing to the edge of the layer, the fixture may not be sufficiently fixed to the base under the influence of the gradient and unevenness of the base. Furthermore, in this case, since each layer such as a heat insulating material is arranged between the pressing plate portion and the flange portion of the fixture, there is a concern that each layer may not be sufficiently fixed to the base. Furthermore, if the fixture is not sufficiently fixed due to the gradient or unevenness of the substrate, the waterproof layer joined to the fixing plate may also be insufficiently fixed to the substrate.

That is, in the present invention, when the waterproof layer is fixed using the fixture, it is less likely to be affected by the gradient or unevenness of the base, etc., and the waterproof layer is more stable by sufficiently fixing the fixture to the base or the like. intended to be fixed.

The means used to solve the problem consist in fixing the fasteners to the rising wall. Specifically, the base board laid on the horizontal floor of the waterproof base having the horizontal floor and the rising wall provided upward from the horizontal floor, the rising piece joined to the rising wall and the rising piece approximately at right angle from the rising piece a fixture having a continuous horizontal piece positioned above the backing plate and not bonded to the backing plate; a bonding agent joining the upstanding strip to the upstanding wall; and a waterproof layer laid on the ground plate and joined to the horizontal piece. A waterproof structure in which the rising piece is not in contact with the horizontal floor, a waterproof structure in which the rising piece is provided along the rising wall and from the horizontal piece toward the horizontal floor, and is arranged between the rising wall and the base plate, or the rising piece However, it can be a waterproof structure provided along the rising wall and upward from the horizontal piece. Furthermore , the viscosity of the bonding agent can be 250 Pa·s or more and 2600 Pa·s or less, and the volume reduction rate of the bonding agent before and after drying can be 10% or less . Furthermore , a waterproof structure in which the base plate is fixed to the horizontal floor with a bonding agent, a waterproof structure in which the fixture is long and the horizontal floor or the base plate has a slope, Further, a waterproof structure can be provided in which the fixture is elongated, a plurality of base plates are used, and the fixture is arranged so as to straddle the joints of the adjacent base plates.
In addition, as a construction method, a step of laying a base plate on a horizontal floor of a waterproof base having a horizontal floor and a rising wall provided upward from the horizontal floor, and a step of laying a waterproof layer on the base plate. , the horizontal piece of the fixture, which is provided with a horizontal piece continuously from the rising piece at a substantially right angle, is arranged between the base plate and the waterproof layer without being joined to the base plate, and the rising piece is along the rising wall. A waterproof structure construction method comprising the steps of arranging and bonding the rising piece to the rising wall with a bonding agent, and bonding the waterproof layer to the horizontal piece and fixing the waterproof layer to the base plate can be used.

ADVANTAGE OF THE INVENTION According to the present invention, there is provided a waterproof structure, a fixture, and a construction method that can stably fix a waterproof layer by sufficiently fixing fixtures to a base, etc., without being easily affected by slopes and unevenness of the base, etc. can be done.

1 is a partial cross-sectional view of a waterproof structure according to one embodiment of the present invention; FIG. 1 is a cross-sectional view of a fixture according to one embodiment of the invention; FIG. It is a partial sectional view of waterproof structure showing a modification of a fixture of one embodiment of the present invention. 1 is a perspective view and partial cross-sectional view of one embodiment of the present invention; FIG. FIG. 4 is a partial cross-sectional view of one embodiment of the present invention with a sloped substrate; 1 is a perspective view and a partial cross-sectional view in the prior art; FIG. FIG. 10 is a partial cross-sectional view of the prior art when the base has a gradient; FIG. 4 is a partial cross-sectional view of one embodiment of the present invention when the substrate has unevenness; 1 is a perspective view of one embodiment of the present invention when fasteners are used across the joints of the baseboard; FIG.

An embodiment of the present invention will be described below with reference to the drawings.

A first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. The waterproof base S has a horizontal floor 1 and a rising wall 2 provided upward from the horizontal floor 1. - 特許庁An internal corner portion I is formed by the horizontal floor 1 and the rising wall 2. - 特許庁The base plate 3 is provided on the horizontal floor 1, and the fixture 5 has a rising piece 51 arranged at the inside corner I and a horizontal piece 52 continuously provided from the rising piece 51 at a substantially right angle. there is A rising piece 51 of the fixture 5 is joined to the rising wall 2 and a horizontal piece 52 is arranged on the base plate 3 . The waterproof layer 4 is laid on the base plate 3 and the horizontal piece 52 and is joined to the horizontal piece 52 .

By bonding the fixture 5 to the rising wall 2, the fixture 5 can be fixed to the waterproof base S without being affected by the unevenness of the horizontal floor 1. - 特許庁

More specifically, the waterproof base S is composed of a horizontal floor 1 and rising walls 2 . A heat insulating material 31 is laid on a horizontal floor 1 as a base plate 3, and a waterproof sheet 41 for flat ground is laid on the heat insulating material 31 as a waterproof layer 4.例文帳に追加A heat insulator 31 is joined to the horizontal floor 1 and a waterproof sheet 41 is joined to the heat insulator 31 . The fixture 5 is provided at the inner corner I, the horizontal piece 52 of the fixture 5 is arranged between the heat insulating material 31 and the waterproof sheet 41, and is fixed in the gap provided between the heat insulating material 31 and the rising wall 2. A rising piece 51 of the tool 5 is arranged. Then, the rising piece 51 is fixed to the waterproof base S by being joined to the rising wall 2. - 特許庁Furthermore, by joining the horizontal piece 52 and the waterproof sheet 41 together, the waterproof sheet 41 is more stably fixed to the waterproof substrate S via the fixtures 5 .

Preferably, the horizontal piece 52 of the fixture 5 is not joined to the heat insulating material 31 . This is because if the heat insulating material 31 also has a slope or unevenness due to the slope or unevenness of the horizontal floor 1, when the horizontal piece 52 is joined to the heat insulating material 31, the fixture 5 will rattle under the influence of the slope or unevenness, making it stable. It may not be possible to fix it to the On the other hand, by joining the rising piece 51 to the rising wall 2, the fixture 5 can be fixed to the waterproof base S without being affected by the slope and unevenness of the horizontal floor 1 on the heat insulating material 31 due to the slope and unevenness. can be done.
Incidentally, if the rising piece 51 is joined to the rising wall 2 , an adhesive or the like may be used to join the horizontal piece 52 to the heat insulating material 31 . However, there is a risk that the horizontal piece 51 may only be partially joined to the heat insulating material 31 due to the influence of the slope and unevenness of the horizontal floor 1, and thus serves as an auxiliary fixing role.

As a modified example of the first embodiment, FIG. 4 in which the fixture 5 is elongated will be described. The fixing member 5 is arranged along the longitudinal direction of the rising wall 2 in the internal corner portion I formed by the horizontal floor 1 and the rising wall 2 . The B-B' cross-sectional view is the same as FIG. Note that the waterproof layer 4 is omitted in FIG. 4 for explanation.

Here, similarly, FIG. 6 shows an example in which the fixture K is elongated in the prior art. In FIG. 6, a gradient may be provided in the direction from B to C and from B to A in some cases. When there is a slope on both sides from a certain point in this way, the fixture K may be arranged across the high point (point B in FIG. 6). In the prior art, fixtures K are installed on horizontal floor 1 along rising walls 2 . Then, as shown in FIG. 7(7-2) viewed from direction D in FIG. Furthermore, even if it is installed according to C, if it swings to the A side, the C side will float and rattle, making it impossible to stably fix it. Here, FIG. 7(7-2) is a cross-sectional view seen from direction D in FIG. 6. For explanation, only the horizontal floor 1, rising wall 2 and fixtures 5 of the base S are drawn, and other members are omitted. are doing. 7(7-1) corresponds to the left side view when FIG. 7(7-2) is the front view, and only the horizontal floor 1, the rising wall 2 and the fixtures 5 are drawn, and the others are omitted. there is

In this embodiment, even if there is a slope as shown in FIG. 5, by joining the rising piece 51 of the fixture 5 to the rising wall 2, the horizontal floor 1 can be fixed without rattling due to the slope. . Here, FIG. 5 (5-2) is a cross-sectional view seen from the direction D in FIG. 4, and for the sake of explanation, only the horizontal floor 1, the rising wall 2 and the fixture 5 of the base S are drawn, and other members are omitted. are doing. 5(5-1) corresponds to the left side view when FIG. 5(5-2) is taken as the front view, and only the horizontal floor 1, the rising wall 2 and the fixtures 5 are drawn, and the others are omitted. there is
In addition, the slope of the waterproof base S is often provided in consideration of rainwater drainage, and the position and degree of the slope are appropriately set depending on the building. It is not certain whether it will be done. Therefore, it is not preferable in terms of construction efficiency and workability to install the fixtures 5 in consideration of the slope of the waterproof base S or to change the fixtures 5 each time. Therefore, when waterproofing the waterproof substrate S, by fixing the fixtures 5 to the rising wall 2, the fixtures 5 can be stably fixed regardless of the slopes and unevenness of the waterproof substrate S and the substrate. .

FIG. 8 shows a case where the horizontal floor 1 has unevenness 10. In this case as well, similar to FIG. It can be fixed without rattling. Here, FIG. 8(8-2) corresponds to a cross-sectional view seen from direction D in FIG. are omitted. 8(8-1) corresponds to the left side view when FIG. 8(8-2) is the front view, and only the horizontal floor 1, the rising wall 2, the fixtures 5 and the unevenness 10 are drawn, and the others are omitted.

A bonding agent 6 is preferably used to bond the fixture 5 to the rising wall 2 . In FIG. 1 , the adhesive 6 is provided between the rising wall 2 and the rising piece 51 of the fixture 5 .

Here, FIG. 1 shows a modified example in which the rising piece 51 of the fixture 5 is not in contact with the horizontal floor 1 . Since the rising piece 51 is not in contact with the horizontal floor 1, it is less likely to be affected by the slope and unevenness of the horizontal floor, and the fixture 5 can be stably fixed regardless of the slope and unevenness of the waterproof base S. preferable.

FIG. 2 shows a fixture 5b as a modified example in which the fixture 5 is provided with claw portions 53. As shown in FIG. A rising piece 51 is provided at one end of a horizontal piece 52 of the fixture 5b, and a claw portion 53 is provided at the other end of the horizontal piece 52. As shown in FIG. By sticking the claw portion 53 into the backing plate 3, the fixing member 5b can be made to correspond to the backing plate 3 and the fixing member 5 can be fixed more firmly.

FIG. 9 shows a case where a plurality of base plates are used side by side. Although the baseboard 3 is arranged along the rising wall 2 in FIG. In such a case, if a joint M is formed at the joint of the adjacent base plates 3 and a step is formed in this joint M, if a fixture and a waterproof layer are provided across the joint M, the fixture and the waterproof layer will have steps and wrinkles. may occur. However, by joining the rising piece 51 of the fixing member 5 to the rising wall 2, even if the fixing member 5 is provided across the joint M of the base plate 3, the fixing member is less likely to be affected by the step of the joint. It is possible to suppress the occurrence of wrinkles and the like due to steps in the waterproof layer 4 that is joined to. Note that the waterproof layer 4 is omitted in FIG. 9 for explanation.

Furthermore, by having claw portions 53 like the fixture 5b and sticking the claw portions 53 into the base plate 3, the fixture 5 can be fixed to the base plate 3 even when the fixture 5b straddles the joint of the base plate 3. Furthermore, since the steps can be evened out by the claw portions 53, wrinkles and the like of the waterproof layer 4 can be further reduced.

The horizontal floor 1 and the rising wall 2, which are the waterproof base S, can be made of any material and structure as long as they are used in conventional waterproof structures such as reinforced concrete, ALC construction, wooden construction, steel construction, and metal folded roofs. may be In addition, the existing waterproof layer may be included in the waterproof substrate S, and the existing waterproof layer may be any waterproof layer such as asphalt waterproof, sheet waterproof, urethane waterproof, FRP waterproof, or the like. As a case where the waterproof substrate S including the existing waterproof layer is used, repair work of the existing waterproof layer can be exemplified.

The base plate 3 may be made of any material as long as it is a plate-like member, but a heat insulating material or a reinforcing plate can be used. As the heat insulating material, heat insulating materials generally used for waterproof layers, such as rigid urethane foam, polystyrene foam, and polyethylene foam, can be used. Examples of the reinforcing board include cement board, plywood, and inorganic board such as silicate board in which inorganic material is fixed with resin. Moreover, you may use it combining a heat insulating material and a reinforcing board.
Here, when the fixture 5b having the claw portion 53 is used, it is preferable that the base plate 3 is relatively flexible. Specifically, by using a heat insulating material, it is preferable in that the claw portion 53 can easily pierce the heat insulating material and workability is good.

A waterproof sheet is preferably used for the waterproof layer 4 . As the waterproof sheet, general waterproof sheets such as polyvinyl chloride resin-based, vulcanized rubber-based, non-vulcanized rubber-based, thermoplastic elastomer-based, and ethylene vinyl acetate resin-based can be used. A flat waterproof sheet can be used for the horizontal floor 1, and a rising waterproof sheet can be used for the rising wall 2. - 特許庁The same waterproof sheet may be used as the flat waterproof sheet and the standing waterproof sheet, or different types of waterproof sheets may be used.
The waterproof sheet may be a single layer of a thermoplastic resin layer, but from the viewpoint of excellent dimensional stability and tensile strength, it is preferable to use a multi-layer product in which substrate layers such as glass cloth, glass nonwoven fabric, polyester cloth, polyester nonwoven fabric are laminated. The substrate layer may be provided in the bottom layer, or 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 each layer may have a different composition.

The fixture 5 has a rising piece 51 joined to the rising wall 2 and a horizontal piece 52 continuously provided from the rising piece 51, as shown in FIG. is making The cross section of the fixture 5a is substantially L-shaped. As a modification, it is preferable to have claw portions 53 like the fixture 5b. The claw portion 53 is provided with a protruding portion on the horizontal floor 1 side of the waterproof substrate at the end portion of the horizontal piece 52 opposite to the side connected to the rising piece 51 . In the example of FIG. 2 , the claw portion 53 is provided facing in the same direction as the rising piece 51 .
Further, since the fixture 5 is provided along the rising wall 2, it is preferable to make it long and elongated along the rising wall 2 from the viewpoint of workability and workability. That is, the cross section composed of the rising piece 51 and the horizontal piece 52 is formed continuously, and the plate-like rising piece 51 and the plate-like horizontal piece 52 are combined into a substantially L shape. there is

The rising piece 51 is preferably provided along the rising wall 2 downward when the horizontal piece 52 is arranged to face the horizontal floor 1 , that is, toward the horizontal floor 1 . As a result, the rising piece 51 is sandwiched between the rising wall 2 and the base plate 3, and the fixture 5 is stably fixed. Further, when joining the rising piece 51 to the rising wall 2, it is preferable because the fixture 5 can be stably fixed at the initial stage of joining.
The rising piece 51 may be provided above the horizontal piece 52 as shown in FIG. 3(3-2). Also, the rising pieces 51 can be provided above and below the horizontal piece 52 as shown in FIG. 3(3-3). The fixture 5c has a substantially Z-shaped cross section, and the fixture 5d has a substantially T-shaped cross section. Here, it is preferable that the fixture 5 is not in contact with the horizontal floor 1 in order to reduce the influence of the slope and unevenness of the horizontal floor 1 . Therefore, it is preferable that the rising piece 51 is not in contact with the horizontal floor 1. Therefore, when the thickness of the base plate 3 is thin, the length of the rising piece 51 is preferably shorter than the thickness of the base plate 3.例文帳に追加Therefore, when it is not possible to secure a sufficient bonding area for the rising piece 51 to match the thickness of the base plate 3, it is preferable to use the fixtures 5c and 5d in which the rising piece 51 is provided above the horizontal piece 1.

Since the horizontal piece 52 needs to be joined to the waterproof layer 4 , it is arranged above the base plate 3 and below the waterproof layer 4 . The length of the horizontal piece 52 is set to a dimension sufficient for joining the waterproof layer 4 . It is desirable that the joint portion of the waterproof layer 4 can secure a joint surface of 40 mm or more, but it is preferably 40 mm to 200 mm or less.

The length of the claw portion 53 should be sufficient to pierce the base plate 3 and sufficiently fix the base plate 3 . However, it is preferable to make it shorter than the thickness of the base board 3 so as not to contact the horizontal floor 2 . As a result, it is possible to reduce the influence of the slope and unevenness of the horizontal floor 1 on the fixtures 5 . In particular, when the rising piece 51 is joined to the rising wall 2, it is possible to reduce the displacement and floating of the fixture 5 before the rising piece 51 is fixed to the rising wall 2, and to lay the waterproof layer 4 more comfortably.

The fixture 5 is used to more stably fix the waterproof layer 4 to the base. Therefore, it is preferable to have appropriate rigidity and strength, and materials such as metal, resin, and wood are used. Metal is preferable in terms of rigidity and strength. The surface of the fixture 5 is bonded to the waterproof layer 4, and the bonding is preferably heat-sealing or solvent-sealing. Therefore, it is preferable that the surface of the fixture 5 in contact with the waterproof layer 4 , which is normally the upper surface above the horizontal floor 1 , is covered with a material that can be welded or fused to the waterproof layer 4 . If the waterproof layer 4 is a thermoplastic resin-based waterproof sheet, it is preferable that the fixture 5 is also covered with a thermoplastic resin-based coating.
As a specific example, when the waterproof layer 4 is a polyvinyl chloride resin-based waterproof sheet, the upper surface of the fixture 5 (the surface in contact with the waterproof layer 4) is preferably covered with a polyvinyl chloride resin-based layer. As a result, the polyvinyl chloride resin-based waterproof sheet that is the waterproof layer 4 and the polyvinyl chloride resin-based layer coated on the upper surface of the fixture 5 can be welded by heat or by solvent, and fixed to the waterproof layer 4 . The tool 5 can be firmly joined.
Further, it is preferable to coat the lower surface (the surface close to the horizontal floor 1) facing the upper surface of the fixture 5 with a thermoplastic resin or the like. In particular, when the fixture 5 is made of metal, it is preferable to provide a coating on the lower surface as a protective layer for preventing corrosion of the fixture 5 and the like. In the above specific example, it is preferable that the lower surface is also covered with a polyvinyl chloride resin-based layer.

Examples of the bonding agent 6 used when bonding the rising piece 51 of the fixture 5 to the rising wall 2 include silicone-based, modified silicone-based, polysulfide-based, polyurethane-based, epoxy-based, modified epoxy-based, acrylic-based, and styrene-butadiene rubber. Bonding agents such as rubber, nitrile rubber, and butyl rubber can be used.

Even if the surface of the rising wall 2 is slightly uneven, since the fixture 5 is displaced in the horizontal direction, it does not hinder the laying of the waterproof layer. Further, by thickening the bonding agent 6 of the fixture, the unevenness of the rising wall 2 can be cushioned. Therefore, in order to thickly apply the bonding agent 6 to the rising wall 2 which is a vertical surface, it is desirable that the viscosity of the bonding agent 6 is relatively high. Specifically, it is preferably 250 Pa·s to 2600 Pa·s.

Furthermore, when the bonding agent 6 is applied thickly, the bonding agent 6 should have a volume change as small as possible after drying in order to prevent the bonding agent 6 from peeling off from the rising wall 2 and the rising piece 51 of the fixture 5 after drying. desirable. Specifically, it is desirable that the volume reduction rate is 10% or less.

Depending on the material of the surface of the rising wall 2 , the joint surface between the rising wall 2 and the rising piece 51 may be subjected to surface treatment to improve the bondability between the rising piece 51 and the bonding agent 6 . Specifically, application of a surface treatment agent or primer can be exemplified (not shown). As for the treatment agent and the primer, it is preferable to use those having good bondability with the bonding agent 6 of the fixture.

The baseboard 3 is preferably fixed to the horizontal floor 1 . In FIG. 1, a base plate 3 is bonded with a bonding agent 7 as a modification of the first embodiment. As the bonding agent 7 for bonding the base plate 3, the same bonding agent as the bonding agent 6 for bonding the rising piece 51 may be used, or a different bonding agent may be used.
The bonding material 7 for bonding the base plate 3 is, for example, silicone-based, modified silicone-based, polysulfide-based, polyurethane-based, epoxy-based, modified epoxy-based, acrylic-based, styrene-butadiene-based, nitrile-rubber-based, or butyl-rubber-based bonding agents. can be used.
Further, the bonding agent 7 may be applied to the entire surface of the base plate 7, or the bonding agent 7 may be applied at intervals as shown in FIG. 1 and provided in dots.

A construction method according to the first embodiment of the present invention will be described with reference to FIG. A step of laying a base plate 3 on a waterproof base S having a horizontal floor 1 and a rising wall 2; a step of laying a waterproof layer 4 on the base plate 3; a step of arranging the horizontal piece 52 between the base plate 3 and the waterproof layer 4, arranging the rising piece 51 along the rising wall 2, and joining the rising piece 51 to the rising wall 2; The construction method includes a step of joining the pieces 52 and fixing the waterproof layer 4 on the base plate 3 .

More specifically, the heat insulating material 31 is laid as the base plate 3 on the horizontal floor 1, the horizontal piece 52 of the fixture 5 is arranged on the base plate 3, and the rising piece 51 is placed at the inner corner I It is inserted between the rising wall 2 and the base plate 3, and the rising piece 51 is joined to the rising wall 2. - 特許庁Then, the waterproof sheet 41 as the waterproof layer 4 is laid on the horizontal piece 52 and the base plate 3, and the waterproof sheet 41 and the horizontal piece 52 are joined. As a result, the waterproof sheet 41 is more stably fixed to the waterproof substrate S via the fixtures 5 .

When the fixture 5 is long as shown in FIG. 9, the fixture 5 is arranged along the rising wall 2 . At this time, the position of the fixture 5 is adjusted and fixed to the rising wall 2 so that the fixture 5 does not become unstable due to the inclination or unevenness of the horizontal floor 1 and the base plate 3 . Further, even when the base plate 3 is composed of a plurality of sheets and the joint M is provided on the base plate 3, in order to reduce the influence of the step at the joint M, the position of the fixture 5 is adjusted and fixed. , are adjusted and fixed so that the difference in level between adjacent fixtures 5 is small. In this way, since the fixtures 5 are fixed to the waterproof base S by joining the rising pieces 51 of the rising wall 2, they are less likely to be affected by the horizontal floor 1 and the base board 3, and the steps of the plurality of fixtures 5 are prevented. can be reduced and fixed.

Here, in the first embodiment, the rising wall 2 in FIG. 1 is illustrated as a parapet or the like provided at the end of the horizontal floor 1. However, the rising wall 2 is not limited to the portion provided at the end of the horizontal floor 1 such as a parapet, and may be a portion projecting upward from the horizontal floor 1 . For example, it may be a stand for installing equipment or the like provided on the horizontal floor 1 . The present invention can also be applied to the case where the pedestal is installed not at the edge of the horizontal floor 1, but inside, and the rising wall 2 is provided around the pedestal.

Examples of the present invention are described below.
Embodiment 1 of the present invention will be described with reference to FIG. A hard urethane foam 31a is laid as a base board 3 on a waterproof base S in which a horizontal floor 1 and a rising wall 2 are made of concrete. The rigid urethane foam 31a is fixed to the horizontal floor 1 by a bonding agent 7 which is a modified silicone adhesive 7a. The modified silicone-based adhesive 7a is applied to the horizontal floor 1 at intervals. The fixture 5a is composed of a rising piece 51 and a horizontal piece 52, and the horizontal piece 52 is continuously formed from the rising piece 51 to form a substantially L-shaped cross section. The rising piece 51 of the fixture 5a is bonded to the rising wall 2 using the modified silicone adhesive 6a as the bonding agent 6. As shown in FIG. The rising piece 51 does not contact the horizontal floor 1, and the length of the rising piece 51 is set slightly shorter than the thickness of the hard urethane foam 31a. On the hard urethane foam 3a as the base plate 3 and the horizontal piece 52 of the fixture 5, a polyvinyl chloride resin-based waterproof sheet 41a for flat use is laid as the waterproof layer 4. As shown in FIG. A polyvinyl chloride resin-based waterproof sheet 41a for plain use is fixed to a rigid urethane foam 31a with a nitrile rubber-based adhesive. A rising polyvinyl chloride resin-based waterproof sheet 42a is fixed to the rising wall 2 with a nitrile rubber-based adhesive. Here, the fixture 5a uses a steel plate whose upper and lower surfaces are coated with a polyvinyl chloride resin layer. The polyvinyl chloride-based resin layer on the horizontal piece 52 of the fixture 5 and the polyvinyl chloride-based waterproof sheet 41a for flat ground are welded with a solvent. The horizontal piece 52 and the polyvinyl chloride resin waterproof sheet 41a for flat application may be joined not only by welding with a solvent but also by heat-sealing using a heat-sealing device.

The bonding agent 6a has a viscosity of 250 Pa·s to 550 Pa·s and a volume reduction rate before and after drying of 10% or less. did it.

As a modified example of the first embodiment, a fixture 5b having claw portions 53 may be used for the fixture 5. FIG. In this case, it is preferable to pierce the rigid urethane foam 31a with the claw portion 53 of the fixture 5b, so that the fixture 5b can be more stably fixed. The thickness of the hard urethane foam 31a is 35 mm, the length of the rising piece 51 of the fixture 5b used in the modified example is 30 mm, the width of the horizontal piece 52 is 50 mm, and the length of the claw portion 53 is 10 mm. An L-shaped fixture was used.

A second embodiment in which the fixture 5 is long and a plurality of base plates 3 are used will be described with reference to FIG. In addition, portions different from those of the first embodiment are described, and descriptions of the same configurations as those of the first embodiment are omitted. A plurality of hard urethane foams 31a are arranged along the rising wall 2 as the base plate 3, and the fixtures 5b are arranged thereon. The fixture 5b having a long shape and having a claw portion 53 is arranged along the longitudinal direction of the rising wall 2 so as to straddle the joints of the adjacent rigid urethane foams 31a. Even if the joints of the adjacent rigid urethane foams 31a are uneven due to the influence of the horizontal floor 1, the rising pieces 51 are fixed to the rising wall 2, and the claws 53 pierce the rigid urethane foams 31a. The rigid urethane foam 31a is pierced by the claw portion 53, thereby restricting the movement of the rigid urethane foam 31a. is fixed more stably.

As a modification of the first embodiment, as shown in FIG. 1, an example in which the rising waterproof layer 42 joined to the rising wall 2 is joined to the fixture 5 will be described. A rising polyvinyl chloride resin waterproof sheet 42a is joined to the flat polyvinyl chloride resin waterproof sheet 41a joined onto the fixture 5. As shown in FIG. The rising polyvinyl chloride resin waterproof sheet 42a is laid and fixed continuously from the position corresponding to the horizontal piece 52 of the fixture 5b to the rising wall 2 so as to cover the internal corner portion I. As shown in FIG. When the standing polyvinyl chloride resin waterproof sheet 42a is laid, the cross-sectional view thereof is substantially L-shaped. An adhesive can be used to join the rising polyvinyl chloride resin waterproof sheet 42a and the rising wall 2, and in this embodiment, a nitrile rubber adhesive is used. The standing PVC resin waterproof sheet 42a and the flat polyvinyl chloride resin waterproof sheet 41a are joined by welding with a solvent. You may
In addition, the rising polyvinyl chloride resin-based waterproof sheet 42a can be similarly used for other modifications. Moreover, fixtures 5b, 5c, 5d, etc. can also be used as the fixture 5. FIG.

The construction method of Example 1 will be described. First, a hard urethane foam 31a is laid as the base plate 3 on the horizontal floor 1, and a modified silicone adhesive 6a is applied as the bonding agent 6 to the surfaces of the rising pieces 51 of the fixtures 5a that come into contact with the rising wall 2. The rising piece 51 is inserted into the gap between the rigid urethane foam 31a and the rising wall 2 along the rising wall. A flat polyvinyl chloride resin waterproof sheet 41a is laid on the rigid urethane foam 31a and the horizontal piece 52 of the fixture 5a. fixed to At this time, the horizontal piece 52 is arranged so as to come between the rigid urethane foam 31a and the polyvinyl chloride resin waterproof sheet 41a. In addition, the polyvinyl chloride resin waterproof sheets 41a for flat use were fixed with a modified silicone adhesive 7a applied to the horizontal floor 1 with a space therebetween. The horizontal piece 52 and the polyvinyl chloride resin waterproof sheet 41a for flat use were welded with a solvent, and the polyvinyl chloride resin waterproof sheet for flat use 41a was fixed to the fixture 5a. As a result, the fixture 5 was joined to the rising wall 2, and the fixture 5a could be fixed without interfering with the irregularities of the base and without any step or float.

A construction method of a modified example using the fixture 5b having the claw portion 53 in the fixture 5 of the first embodiment will be described. A rigid urethane foam 31a is laid as a base plate 3 on a horizontal floor 1, and a modified silicone adhesive 6a is applied as a bonding agent 6 to the surfaces of the rising pieces 51 of the fixtures 5b that come into contact with the rising wall 2. The rising piece 51 is inserted into the gap between the rigid urethane foam 31a and the rising wall 2 along the rising wall. A cut having a depth of 10 mm or more was made in the base plate 3 along the claw portion 53, and the claw portion 53 was inserted into the cut. When inserting, lightly tapping the fixture 5b with a hammer or the like enables easy insertion. A flat polyvinyl chloride resin waterproof sheet 41a is laid on the rigid urethane foam 31a and the horizontal piece 52 of the fixture 5b. fixed to At this time, the horizontal piece 52 is arranged so as to be between the hard urethane foam 31a and the polyvinyl chloride resin waterproof sheet 41a. In addition, the polyvinyl chloride resin waterproof sheets 41a for flat use were fixed with a modified silicone adhesive 7a applied to the horizontal floor 1 with a space therebetween. The horizontal piece 52 and the polyvinyl chloride resin waterproof sheet 41a for flat use were welded with a solvent, and the polyvinyl chloride resin waterproof sheet for flat use 41a was fixed to the fixture 5b.

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to provide a waterproof structure, a fixture, and a construction method that are well-fitting without being affected by the unevenness of the substrate, even when it is desired to perform construction without damaging the substrate or when the construction part is narrow and difficult to use tools. .

S Groundwork I Inner corner M Groundboard joint 1 Horizontal floor 2 Rising wall 3 Groundboard 4 Waterproof layer 41 Waterproof sheet 5 Fixture 51 Rising piece 52 Horizontal piece 53 Claw part 6 Bonding agent 10 Unevenness of the foundation

Claims (10)

a base plate laid on the horizontal floor of a waterproof base having a horizontal floor and a rising wall provided upward from the horizontal floor;
a fixture having a rising piece joined to the rising wall and a horizontal piece provided continuously from the rising piece at a substantially right angle and arranged on the base plate and not joined to the base plate;
a bonding agent that bonds the upstanding piece to the upstanding wall;
A waterproof structure comprising the horizontal piece of the fixture and a waterproof layer laid on the base plate and joined to the horizontal piece. 2. The waterproof structure according to claim 1, wherein said rising piece is not in contact with said horizontal floor. 3. The waterproof structure according to claim 1, wherein the rising piece is provided along the rising wall and from the horizontal piece toward the horizontal floor, and is arranged between the rising wall and the base plate. The waterproof structure according to any one of claims 1 to 3, wherein the rising piece is provided along the rising wall and upward from the horizontal piece. The waterproof structure according to any one of claims 1 to 4, wherein the adhesive has a viscosity of 250 Pa·s or more and 2600 Pa·s or less. 6. The waterproof structure according to claim 5, wherein the bonding agent has a volume reduction rate of 10% or less before and after drying. The waterproof structure according to any one of claims 1 to 6 , wherein the base plate is fixed to the horizontal floor with a bonding agent. The waterproof structure according to any one of claims 1 to 7 , wherein the fixture is long and the horizontal floor or the base plate has a slope. 9. The fixing device according to any one of claims 1 to 8 , wherein the fixture is long, a plurality of the base plates are used, and the fixture is arranged so as to straddle the joints of the adjacent base plates. waterproof structure. A step of laying a base board on the horizontal floor of the waterproof base having a horizontal floor and a rising wall provided upward from the horizontal floor;
Laying a waterproof layer on the base plate;
The horizontal piece of the fixture, in which the horizontal piece is provided continuously from the rising piece at a substantially right angle, is arranged between the base plate and the waterproof layer without being joined to the base plate, and the rising piece is connected to the rising piece. positioning along a wall and bonding the upstanding piece to the upstanding wall with a cement;
and bonding the waterproof layer to the horizontal piece and fixing the waterproof layer onto the base plate.

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