JPH0233540Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a waterproof sheet tensioning device for a concrete building in which a heat insulating material is installed, such as a heat storage tank or a flat roof.

BACKGROUND ART Conventionally, in a heat storage tank, as shown in FIG.
Plate-like joint pieces 25 are arranged at required locations on the two surfaces,
Each joint piece 25 is fixed by a fixing fitting 26 that penetrates the joint piece 25 and the heat insulating material 22 and reaches the concrete wall 21a at its tip end, and a corresponding required portion of the waterproof sheet 23 is attached to the surface of each joint piece 25. By joining, the waterproof sheet 23 was stretched over the entire surface of the heat insulating material 22.

However, generally the head 26 of the fixture 26
The size of a is considerably smaller than the joint piece 25, and the head 26a is not integrated with the joint piece 25, and the heat insulating material 22 is made of elastic material such as foamed synthetic resin or glass wool. Since the material is made of a material, when pressure from the contents of the heat storage tank 21 acts on the joint piece 25 and the heat insulating material 22 through the waterproof sheet 23, the heat insulating material 22 will be damaged as shown in FIG. 6B, for example. The head 26a of the fixing fitting 26 is deformed so as to be thinner, and is recessed together with the joint piece 25, and the head 26a of the fixing fitting 26 is
protrudes inside the tank from the joint piece 25, and this head 26
There was a problem in that the waterproof sheet 23 was torn due to water a and the waterproofing effect of the sheet 23 was impaired.

For example, as shown in Fig. 7A, if there is a large recess (or protrusion) 27 on the surface of the concrete wall 21a, the depth of the recess 27 is further increased as shown in Fig. 7B. Insulation material 22
is deformed, and the head portion 26a of the fixture 26 protrudes further relative to this, causing the problem that the waterproof sheet 23 is more easily torn.

Purpose of the invention The purpose of this invention is to solve the above problem, and to prevent the heat insulating material from being pressed by the pressure of the contents of the heat storage tank.
If the waterproof sheet is deformed so that its thickness becomes thin, or if the deformation becomes even greater due to the presence of uneven parts on the surface of the wall to be waterproofed, the locking head of the fixing bracket will not attach to the waterproof sheet. It is an object of the present invention to provide a device for stretching a waterproof sheet in a concrete building such as a heat storage tank, which can prevent the waterproof sheet from being damaged by direct contact.

Composition of the invention In order to achieve the above-mentioned purpose, this invention is based on the following: Insulating material laid on the concrete wall of the part of the concrete building such as a heat storage tank that should be insulated and waterproofed.
It is held down to the concrete wall by a required number of insulation material holding plates and fixing metal fittings that penetrate the holding plates and the insulation material and have a locking head, and a fixing metal fitting is attached to the surface of each heat insulation material holding plate. The joint plate that covers the locking head is fastened together, the retaining plate and the locking head of the fixing bracket are integrated with the joint plate, and a waterproof sheet is placed over the entire surface of the insulation material from above the joint plate. The gist of this paper is a waterproof sheet tensioning device for concrete buildings such as heat storage tanks, in which the required parts are joined to the surface of the corresponding joint plate.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In FIGS. 1 and 2 showing the first embodiment of this invention, this invention shows a concrete wall 1 of a portion of a concrete building 1 such as a heat storage tank that is to be insulated and waterproofed.
The heat insulating materials 2 laid out in rows a and 1b are connected to the required number of heat insulating material holding plates 5, these holding plates 5 and the heat insulating materials 2.
It is held down to the concrete walls 1a, 1b by a fixing metal fitting 6 having a locking head 6a and penetrating through it, and the locking head 6a of the fixing metal fitting 6 is covered with the surface of each heat insulating material holding plate 5. The joining plates 7 are fixed together,
Holding plate 5, locking head 6a of fixture 5, and joint plate 7
The required portion 3 of the waterproof sheet 3 is made into one piece, and the entire surface of the heat insulating material 2 is covered from above the joint plate 7.
a is bonded to the surface of the corresponding bonding plate 7.

As the heat insulating material 2, for example, polystyrene, polyvinyl chloride, polyurethane, polyethylene resin foams, glass wool, etc. are used, and polystyrene foams are particularly preferred because they are inexpensive.

The thickness of the heat insulating material 2 varies depending on the case, but is usually about 25 to 100 mm.

As the waterproof sheet 3, a sheet made of thermoplastic synthetic resin such as soft polyvinyl chloride, polyethylene, or polypropylene, a non-vulcanized rubber sheet, a rubber asphalt sheet, etc. is used.
In particular, it is preferable to use a flexible polyvinyl chloride sheet from the viewpoint of adhesiveness. The thickness of this waterproof sheet 3 is usually about 1.0 to 2.0 mm.

Here, if the heat insulating material 2 is made of expanded polystyrene and the waterproof sheet 3 is made of a sheet of plasticizer-containing resin such as soft polyvinyl chloride resin, the waterproof sheet 3
The plasticizer may transfer to the heat insulating material 2 and cause the heat insulating material 2 to swell and soften. For this reason, as shown in the figure, it is desirable to provide a plasticizer migration waterproof layer 4 between the heat insulating material 2 and the waterproof sheet 3.

As such a plasticizer migration prevention tank 4, one made of, for example, a polyethylene or polypropylene film or foam, or a composite of a foam of these resins and a woven fabric is used.

Further, as the heat insulating material holding plate 5, a hard or semi-hard synthetic resin plate, a metal plate, a steel plate coated on both sides with polyvinyl chloride resin, or the like is used.
In this embodiment, strip-shaped heat insulating material holding plates 5a and 5b with a substantially L-shaped cross section are used at the periphery and corners of the heat storage tank 1, and circular heat insulating material holding plates 5c are used at the other intermediate portions. used. In addition, as the heat insulating material holding plate 5c in the intermediate portion, other square or flat strip-shaped plates may be used.

As the fixture 6, a split nail, a curl plug, or the like is used.

Further, as the joint plate 7, a hard synthetic resin plate, a metal plate, a steel plate coated on both sides with vinyl chloride resin, etc. can be used similarly to the above-mentioned heat insulating material press plate 5, but the joint plate 7 and the heat insulating material press plate 5 The materials may be the same or different.

Epoxy, urethane, rubber, or other adhesives are used to bond the heat insulating material holding plate 5 and the bonding plate 7, and to bond the bonding plate 7 and the waterproof sheet 3, respectively.

In particular, when the joints of these parts are made of the same resin such as vinyl chloride resin, it is possible to bond them using tetrahydrofuran alone or a solvent-based adhesive prepared by dissolving a small amount of vinyl chloride resin in tetrahydrofuran. It is preferable because it is easy to act and produces a highly durable adhesive effect.

In addition, in the case of the heat storage tank 1, hot water, etc. is stored inside the tank, and pressure is constantly applied to the waterproof sheet 3 due to this hot water, etc., so the waterproof sheet 3 is held at least at its ends and corners by the heat insulating material. It is only necessary to join it to the joint plate 7 which is integral with the plates 5a and 5b, and the intermediate portion only needs to be appropriately joined to the joint plate 7 which is integral with the heat insulating material holding plate 5c.

Although the shape and size of the joining plate 7 are arbitrary, it is usually the same shape and the same size as the heat insulating material holding plate 5, or a piece that is slightly smaller than this. In some cases, a joining plate 7 is provided integrally with a metal plate or the like extending to one side of the insulation material holding plate 5, and the fixing metal fitting 6 is inserted from the insulation material holding plate 5 part. After fixing the heat insulating material 2, the remaining joint plate 7 is folded over the heat insulating material holding plate 5 and fastened together, so that it covers the locking head 6a of the fixing fitting 6. It's okay.

In the above, FIG. 2A shows the state before the heat storage tank 1 is filled with contents such as hot water. As shown in FIG. Although the portion 6a will protrude relatively,
Since the locking head 6a is sandwiched between the heat insulating material pressing plate 5 and the joining piece 7, it does not touch the waterproof sheet 3 at all, and therefore the locking head 6 of the fixing fitting 3 does not touch the waterproof sheet 3 at all.
Along with a, the heat insulating material holding plate 5 and the joining plate 7 are relatively lifted up from the surface of the heat insulating material 3. As a result, the tarpaulin sheet 3 is slightly stretched and deformed, but the tarpaulin sheet 3 is flexible and is pressed relatively gently by the heat insulating material holding plate 5 and the joining plate 7, which have a large area. Because only
There is no possibility that the tarpaulin sheet 3 will be torn.

In addition, when the waterproof sheet 3 is made of a relatively thin synthetic resin sheet, a protective covering material 8 is interposed between the waterproof sheet 3 and the joint piece 7, as shown in FIG. It's okay. As such a protective covering material 8, a shredded piece of the same synthetic resin sheet as the waterproof sheet 3 may be used, and of course, the stronger the material, the more preferable it is.

In the first embodiment, the plasticizer migration prevention layer 4 is provided between the heat insulating material 2 and the waterproof sheet 3, but the pins that occur in the waterproof sheet 3 after the insulation and waterproofing of the heat storage tank 1 are In order to detect holes, a conductive layer (not shown) may be provided between the heat insulating material 2 and the waterproof sheet 3, and in some cases, a composite layer of a plasticizer migration prevention layer and a conductive layer (not shown) may be provided. Layers may also be provided.

Here, as the material constituting the conductive layer, a conductive sheet formed by vapor-depositing a metal such as aluminum or copper onto a metal foil such as aluminum foil or a synthetic resin film such as polyester resin is used. Further, as a material for the conductive layer, a conductive sheet made of a nonwoven fabric made of conductive fiber alone or a mixture of the conductive fiber and a thermoplastic fiber having a low softening point may be used.

As a composite layer of plasticizer migration waterproof layer and conductive layer,
For example, a composite sheet formed by laminating and integrating aluminum foil, a polyethylene fiber woven fabric, and a polyethylene resin foam stopper is used.

4 and 5 show a second embodiment in which this invention is applied to a flat roof 11. Here, the difference from the first embodiment is that the heat insulating material 2 is laid on the concrete wall 11a at the bottom of the flat roof 11, and a plasticizer migration prevention layer 4 is formed between the heat insulating material 2 and the waterproof sheet 3. The reason is that there is no provision for this.

The joint plate 7 is attached only to the heat insulating material holding plate 5 at the part that holds down the heat insulating material 2, and the end portion of the waterproof sheet 3 is attached to the rising wall 11 on the periphery of the flat roof 11.
The insulation material holding plate 5a is extended to near the upper edge of b.
is joined to.

In addition, in the case of a flat roof 11 where people generally walk, a waterproof sheet 3 that is stronger than that of the heat storage layer 1 is used, but if the above-mentioned joining plate 7 is attached to the insulation material holding plate 5, Even when a local load is applied around the heat insulating material holding plate 5 and the joining plate 7, damage to the waterproof sheet 3 can be effectively prevented.

Effects of the invention As described above, the waterproof sheet spreading device for concrete buildings such as heat storage tanks and the like according to this invention is applicable to
The heat insulating materials 2 laid out in rows 11a are fixed to the concrete wall by a required number of heat insulating material holding plates 5 and fixing fittings 6 that penetrate the holding plates 5 and the heat insulating materials 2 and have locking heads 6a. 1a, 1b, and 11a, and a joining plate 7 that covers the locking head 6a of the fixing metal fitting 6 is attached to the surface of each heat insulating material holding plate 5, and the holding plate 5 and the fixing metal fitting 5 are locked together. The head 6a and the joint plate 7 are integrated, and a required portion 3a of the waterproof sheet 3, which is placed over the entire surface of the heat insulating material 2 from above the joint plate 7, is joined to the surface of the corresponding joint plate 7. Therefore, if the heat insulating material 2 is pressed by the pressure of the contents of the heat storage tank 1 and deforms so that its thickness becomes thin, and if the wall 1 to be waterproofed
Even if the deformation becomes larger due to the presence of uneven parts on the surface of the fixing metal 6,
The locking head 6a does not come into direct contact with the tarpaulin sheet 3, and damage to the tarpaulin sheet 3 can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a partial vertical sectional view of a heat storage tank showing a first embodiment of this invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 1A shows the state before deformation of the heat insulating material. Figure B shows the state after deformation. FIG. 3 is an enlarged sectional view of a main part showing a modification of FIG. 2A. Fig. 4 is a partial vertical sectional view of a flat roof showing a second embodiment of this invention, Fig. 5 is a partially enlarged sectional view of Fig. 4, and Fig. 6 is a partially enlarged sectional view of a heat storage tank showing a conventional example. FIG. 7 shows another conventional example of a heat storage tank in which a recess exists in the surface of the wall to be waterproofed, and FIGS. 6 and 7 correspond to FIG. 2. 1... Heat storage tank (concrete building), 1a... Concrete wall,... Heat insulation material, 3... Waterproof sheet, 5,
5a, 5b, 5c...Insulating material holding plate, 6...Fixing metal fittings, 6a...Locking head, 7...Joining plate, 11...Flat roof (concrete building), 11a, 11b...Concrete wall.

Claims (1)

[Scope of utility model registration request] Concrete walls 1a, 1b, 1 of parts of concrete buildings 1, 11 such as heat storage tanks that should be insulated and waterproofed
The heat insulating materials 2 laid out in rows 1a are fixed to the concrete wall by a required number of heat insulating material holding plates 5 and fixing fittings 6 that penetrate the holding plates 5 and the heat insulating materials 2 and have locking heads 6a. 1a, 1b, and 11a, and a fixing fitting 6 is attached to the surface of each insulation material holding plate 5.
The joint plate 7 that covers the locking head 6a of the holding plate 5 and the locking head 6a of the fixing metal fitting 5 and the joint plate 7 are made integral, and the heat insulating material 2 is inserted from above the joint plate 7. A waterproof sheet tensioning device for a concrete building such as a heat storage tank, in which a required portion 3a of a waterproof sheet 3 covering the entire surface of is joined to the surface of a corresponding joining plate 7.