JPH0356575Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a heat insulating and waterproofing device for concrete structures such as heat storage tanks and flat roofs.

Conventional technology Conventionally, insulation and waterproofing devices using waterproof sheets were
For example, as shown in FIG. 5, a concrete wall 2 to be waterproofed in a heat storage tank 22 of a concrete structure 21
A heat insulating material layer 23 consisting of a large number of heat insulating material blocks 24 provided along lines 7 and 28, and a base sheet 2 for preventing plasticizer migration and for curing covered on the heat insulating material layer 23.
5 and the waterproof sheet 2 covered with the base sheet 25
After a large number of insulation blocks 24 are laid out on the concrete walls 27 and 28, a base sheet 25 is covered, and all the insulation blocks 24 are combined with the base sheet 25 and a waterproof sheet joint piece 30. Concrete wall 27,2 by fixing device 31
8, and these waterproof sheet joint pieces 30 and the waterproof sheet 26 are joined to form a waterproof sheet.

Problems to be Solved by the Invention However, with such a conventional heat insulating and waterproofing device, buckling may occur in the heat insulating material layer 23 due to water pressure during long-term use, or gentle unevenness of the concrete walls 27, 28 may occur. When the heat insulating material layer 23 is deformed due to so-called unevenness, for example, as shown in FIG. As a result, the head 31a of the fixing device 31 such as a split nail protrudes relatively, or as shown in FIG. There was a problem in that the piece 30 and the head 31a of the fixing member 31 protruded as one, thereby partially damaging the waterproof sheet 26 and causing a risk of water leakage.

Furthermore, in the conventional heat-insulating waterproofing device, all the heat-insulating blocks 24 are fixed to the concrete walls 27 and 28 from above the base sheet 25 using the waterproof sheet joining piece 30 and the fixture 31, and in this case, the heat-insulating blocks 24 are In order to prevent the corners of the insulation blocks 24 from lifting up, it is necessary to press down the four corners of each insulation block 24, but it is very difficult to distinguish the four corners of the insulation blocks 24 from above the base sheet 25. Moreover, especially in the peripheral side wall portion of the heat storage tank 24, it is necessary to fix the base sheet 25 and the heat insulating material block 24 while holding down the heat insulating material block 24, which poses a problem of extremely poor workability.

The purpose of this invention is to solve the above-mentioned problems of the conventional technology, and to provide waterproofing even when the insulation layer is buckled or deformed at the periphery of the insulation layer or at the intermediate portion between the periphery and the corner. It is extremely effective because it prevents damage to the sheet, there is no risk of water leakage, and it is extremely easy and reliable to fix the large number of insulation blocks that make up the insulation layer. It is an object of the present invention to provide a heat insulating and waterproofing device for a concrete structure which has excellent workability and can perform the heat insulating and waterproofing construction of the concrete structure quickly and reliably.

Means for Solving the Problems In order to achieve the above object, this invention has a heat insulating material layer consisting of a large number of heat insulating material blocks provided on the surface of a concrete wall that is to be insulated and waterproofed, and a heat insulating material It is equipped with a base sheet that covers the base sheet and a waterproof sheet that covers the base sheet. The corresponding parts of the base sheet that have been attached are fixed together to the concrete wall by a waterproof sheet joint piece and a joint piece fixing device that press down the base sheet from the outside, and the waterproof sheet is attached to the outer surface of these waterproof sheet joint pieces. A heat insulating and waterproofing device in which the corresponding parts of the heat insulating material layer are joined, and in the peripheral part of the heat insulating material layer or in the intermediate part excluding the peripheral part and the corner part, the square insulating material block is connected to the heat insulating material block holding part and the fixing part. are fixed to the concrete wall by fixing members having
The gist of this paper is a heat insulating and waterproofing device for concrete structures, in which the corresponding part of the base sheet is covered with a corresponding part of the waterproof sheet.

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

In FIGS. 1 to 3 showing a first embodiment in which this invention is applied to a heat storage tank, a concrete structure 1
A heat storage tank 2 is provided in the underground part of the building. A heat insulating material layer 3 is provided on the surfaces of the concrete bottom wall 7 and peripheral side wall 8 of this heat storage tank 2, and this insulating material layer 3 consists of a large number of layers each having a size of, for example, 1 m in width x 2 m in length. It is composed of a heat insulating material block 4.

A base sheet 5 for preventing plasticizer migration and curing is placed over the entire surface of the heat insulating layer 3, and a waterproof sheet 6 is placed over the entire surface of the base sheet 5.

Then, the peripheral edge 3a and corner portion 3b of the heat insulating layer 3
In this process, the edge of a predetermined heat insulating material block 4 and the corresponding part of the base sheet 5 placed over it are made of concrete by a waterproof sheet joining piece 10 and a joint piece fixture 11 that press down the base sheet 5 from the outside. are fixed together to the bottom wall 7 and peripheral side wall 8 of the waterproof sheet 6, and the corresponding portions of the waterproof sheet 6 are joined to the outer surfaces of these waterproof sheet joining pieces 10. In addition, in the intermediate part 3c of the heat insulating material layer 3 excluding the peripheral part 3a and the corner part 3b, the four corners and the center part of each insulating material block 4 have a circular heat insulating material block holding part 9a and a retaining part 9c at the tip. It is fixed to the concrete bottom wall 7 and the peripheral side wall 8 by a polypropylene fixing member 9 having a fixing part 9b. A corresponding portion of the base sheet 5 is placed over the outer surface of the heat insulating block holding portion 9a of each fixing member 9, and a corresponding portion of the waterproof sheet 6 is placed over the outside of the corresponding portion of the base sheet 5. Note that the base sheet 5 and the fixing member 9 are not joined.

In addition, in the peripheral edge part 3a of the heat insulating material layer 3, a waterproof sheet joint piece 10a having a substantially L-shaped cross section with a hanging part at the lower edge is used, and the upper vertical part of this waterproof sheet joint piece 10a is connected to the fixture 11. It is directly fixed to the peripheral side wall 8 by.

In addition, the hanging portion of the waterproof sheet joint piece 10a fixes the edge of the predetermined heat insulating material block 4 and the corresponding portion of the base sheet 5 placed thereon together to the concrete circumferential wall 8. A corresponding portion of the waterproof sheet 6 is joined to the outer surface of the hanging portion of the joining piece 10a.

Further, in the corner portion 3b of the heat insulating material layer 3, a waterproof sheet joint piece 10b having an L-shaped cross section is used, and a predetermined heat insulating material block 4 is formed by the horizontal and vertical parts of this waterproof sheet joint piece 10b. The edge and the corresponding part of the base sheet 5 placed over it are pressed together from the outside, and in this state, the horizontal and vertical parts of the joint piece 10b are fixed to the concrete bottom wall by the fixing device 11, respectively. 7 and the peripheral side wall 8.

Corresponding parts of the waterproof sheet 6 are joined to the waterproof sheet joint pieces 10a and 10b on the outer surfaces of the horizontal and vertical parts of the joint piece 10b.

In the heat storage tank 2, the heat insulating material blocks 4 constituting the heat insulating material layer 3 are made of resin foams such as polystyrene, polyvinyl chloride, polyurethane, and polyethylene.
In particular, it is economically advantageous to use polystyrene foam. The thickness of insulation block 4 is approximately 20
~100 mm, and usually one having a width of about 1 m and a length of about 2 m is used, but the size and shape of such a heat insulating material block 4 are of course arbitrary.

Note that the insulation block 4 is replaced by a concrete wall 7,
As the fixing member 9 to be fixed to the fixing member 8, a member having a structure other than the above-mentioned material, such as a hard or semi-hard synthetic resin, may of course be used.

As the waterproof sheet 6, 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 6 is usually 1.0 to 2.0 mm.

The base sheet 5 interposed between the heat insulating material layer 3 and the tarpaulin sheet 6 has a curing effect to protect the tarpaulin sheet 6 and, for example, when the tarpaulin sheet 6 is made of plasticizer-containing synthetic resin, it prevents plasticization from the tarpaulin sheet 6. This has the effect of preventing plasticizer migration to prevent the plasticizer from migrating to the heat insulating material layer 3.

Such base sheet 5 may be a foamed sheet with a thickness of 1 to 4 mm made of closed foam of thermoplastic resin such as polyethylene, polypropylene, polyurethane, and polyvinyl chloride, or a foamed sheet of these foamed sheets and a foamed sheet such as polyethylene, polypropylene, polyvinyl chloride, etc. A composite sheet is used in which a reinforcing layer made of polyvinyl chloride and polyester films, or woven or nonwoven fabrics made of these resins is attached to the entire surface with an adhesive or by heating. When the waterproof sheet 6 is made of, for example, a soft vinyl chloride sheet and the insulation block 4 is made of polystyrene or polyvinyl chloride foam, in order to prevent the plasticizer from migrating from the waterproof sheet 6. In particular, it is desirable to use polyethylene or polypropylene films or foams, as well as composite sheets of foams of these resins and resin films, woven fabrics or non-woven fabrics.

Further, as the waterproof sheet joining piece 10, a hard or semi-hard synthetic resin plate, a metal plate, or a plate material such as a steel plate coated with vinyl chloride resin on one or both sides to improve adhesion is used.

Waterproof sheet joint piece 10 is attached to concrete walls 7, 8
As the fixing device 11 for fixing, a split nail, a curl plug, or the like is used.

As the adhesive for joining the waterproof sheet 6 to the joint piece 10, epoxy-based, urethane-based, rubber-based adhesives, etc. can be used. In such a case, it is preferable to use tetrahydrofuran alone or a solvent-based adhesive prepared by dissolving a small amount of vinyl chloride resin in tetrahydrofuran, since this produces a highly durable adhesive effect. Note that if both the waterproof sheet 6 and the joining surfaces of the joining piece 10 are made of thermoplastic synthetic resin, they can also be joined by thermal fusion without using an adhesive.

In the heat storage tank 2, a large number of heat insulating blocks 4 constituting the heat insulating layer 3 are connected to a concrete wall 7,
8 with the fixing member 9 first, the four corners of the insulation block 4 can be firmly held down, and therefore the corners of the insulation block 4 can be reliably prevented from lifting up. At the same time, it has excellent workability, and in particular, there is no need to hold down the heat insulating material block 4 when stretching the base sheet 5 on the peripheral side wall 8 of the heat storage tank 2, and the stretching work can be carried out easily. . In addition, if the heat insulating layer 3 is buckled or deformed due to long-term use of the heat storage tank 2, the head of the fixing member 9 of the insulating block 4, that is, the insulating block holding part 9a, will be moved relative to the insulating block 4. Even if the waterproof sheet 6 protrudes from the upper surface, the waterproof sheet 6 will not be damaged due to the presence of the base sheet 5.

FIG. 4 shows a second embodiment in which this invention is applied to the insulation and waterproofing of a flat roof 12 of a concrete structure 1. Here, the difference from the first embodiment is that a large number of insulation blocks 4 constituting the insulation layer 3 provided on the concrete wall 13 of the flat roof 12 exclude the peripheral edge 3a of the insulation layer 3. The intermediate portion 3c is composed of an intermediate holding piece (insulation block holding part) 14a made of the same material as the waterproof sheet joining piece 10, and a fixture (fixing part) 14b similar to the fixture 11. A required intermediate portion of the waterproof sheet 6 that covers the entire surface of the flat roof 12 is joined to the outer surface of the waterproof sheet joining piece 10 having a substantially L-shaped cross section at the peripheral edge 3a of the heat insulating layer 3. At the same time, the peripheral edge of the waterproof sheet 6 is attached to the end portion of the waterproof sheet joint piece 1 having a substantially L-shaped cross section at the upper end of the parapet 15 of the flat roof 12.
6 in a close contact state. In addition,
The base sheet 5 and the intermediate holding piece 14a are not joined. As the intermediate holding piece 14a, a circular plate or a strip-shaped piece may be used.

The other points of this second embodiment are the same as those of the first embodiment, and accordingly, the same parts are given the same reference numerals in the drawings.

Effects of the invention As mentioned above, the heat insulation and waterproofing device according to this invention includes a heat insulation layer consisting of a large number of heat insulation blocks provided on the surface of a concrete wall that is to be heat-insulated and waterproofed, and a heat insulation layer covered with the heat insulation material layer. It is equipped with a base sheet covered with a base sheet and a waterproof sheet placed over the base sheet, and the edge of a predetermined heat insulating material block and the base sheet placed over the base sheet are provided at the periphery of the heat insulating material layer or at the periphery and the corner. The corresponding parts of the waterproof sheet are fixed together to the concrete wall by the waterproof sheet joint piece and the joint piece fixing device that press down the base sheet from the outside, and the corresponding part of the waterproof sheet is attached to the outer surface of these waterproof sheet joint pieces. In the heat insulating and waterproofing device which is joined, each heat insulating block has a heat insulating material block holding part and a fixing part in the peripheral part of the heat insulating material layer or in the intermediate part excluding the peripheral part and the corner part. It is fixed to a concrete wall by members, and the outer surface of the insulation block holding part of each fixing member is covered with a corresponding part of a base sheet, and the corresponding part of a waterproof sheet is covered on the outside of the corresponding part of this base sheet. Therefore, even if the insulation layer is buckled or deformed in the middle of the insulation layer, the presence of the base sheet will prevent the waterproof sheet from being damaged by the fixing member. There is no risk of water leakage. Moreover, since the large number of insulation blocks constituting the insulation layer are first fixed to the concrete wall using fixing members, the four corners of each insulation block can be firmly held down. In addition to being able to reliably prevent parts from lifting up, it is extremely easy to work with, and there is no need to hold down the insulation block when applying the base sheet to the peripheral side wall of a heat storage tank, etc. The effect is that the insulation and waterproofing of concrete structures can be carried out quickly and reliably.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a heat storage tank showing a first embodiment of this invention, FIG. 2 is a sectional view taken along the line - FIG. 1, and FIG. 3 is a partially enlarged sectional view of FIG. 2. FIG. 4 is a longitudinal sectional view of a flat roof showing a second embodiment of this invention. Fig. 5 is a longitudinal sectional view showing a conventional example, and Fig. 6 is an enlarged sectional view of the main part of Fig. 5, showing the state in which the head of the fixture protrudes when buckling occurs in the insulation material. . FIG. 7 is an enlarged sectional view of the main part of FIG. 5, showing a state in which the head of the fixture and the waterproof sheet joint piece protrude. 1... Concrete structure, 2... Heat storage tank, 3
...Insulating material layer, 3a...Peripheral part, 3b...Corner part, 3c...Intermediate part, 4...Insulating material block, 5
... Base sheet, 6 ... Waterproof sheet, 7, 8, 1
3...Concrete wall, 9...Fixing member, 9a...
...Insulation block holding part, 9b...Fixing part, 9c
... Retention part, 10, 10a, 10b ... Waterproof sheet joint piece, 11 ... Fixture, 12 ... Flat roof,
14... Fixing member, 14a... Intermediate holding piece (insulating material block holding part), 14b... Fixing tool (fixing part).

Claims (1)

[Scope of utility model registration request] A heat insulating material layer 3 consisting of a large number of heat insulating material blocks 4 provided on the surface of the concrete walls 7, 8, 13 to be insulated and waterproofed in the concrete structure 1, a base sheet 5 placed on the heat insulating material layer 3, and a base material. sheet 5
At the peripheral edge 3a of the heat insulating material layer 3 or the peripheral edge 3a and the corner part 3b, the edge of a predetermined heat insulating material block 4 and a base sheet 5 covered therewith are provided. The corresponding part of
The base sheet 5 is fixed to the concrete walls 7, 8, 13 together by the waterproof sheet joint pieces 10 and joint piece fixtures 11 that press down the base sheet 5 from the outside, and the waterproof sheet 6 is attached to the outer surface of these waterproof sheet joint pieces 10. In the heat insulating and waterproofing device in which corresponding parts of the heat insulating material layer 3 are joined, the square heat insulating material block 4 is connected to the heat insulating material block in the peripheral part 3a of the heat insulating material layer 3 or in the intermediate part 3c excluding the peripheral part 3a and the corner part 3b. It is fixed to the concrete walls 7, 8, 13 by fixing members 9, 14 which have holding parts 9a, 14a and fixing parts 9b, 14b. A heat insulating and waterproofing device for a concrete structure, in which a corresponding part of a base sheet 5 is covered, and a corresponding part of a waterproof sheet 6 is covered on the outside of the corresponding part of the base sheet 5.