JPH1061083A - Execution method of dirt floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute a dirt floor having excellent heat-insulating properties and moistureproofness by directly laying a foamed heat-insulating material on ballast without clearances and without laying a moistureproof sheet. SOLUTION: In the execution method of the dirt floor, the outer circumferential surface of a continuous footing is surrounded by a foamed heat-insulating material 2 and the heat-insulating material 2 is installed at the same time as the constitution of the continuous footing 1, the inside of the surrounded partition of the continuous footing 1 is backfilled with soil to be refilled 3, ballast 4 is laid on the soil to be refilled, ballast 4 is rolled, the foamed heat-insulating materials 5 are laid at the intervals 6 of arrangement, a field expansible heat- insulating material 7 is injected among the mutual foamed heat-insulating materials 5 and into the intervals 6 of arrangement of the foamed heat-insulating materials 5 and the continuous footing 1, and dirt-floor reinforcements 8 are assembled to the upper sections of these foamed heat-insulating materials 5, 7. Dirt-floor concrete is placed on the foamed heat-insulating materials 5, 7 and the dirt floor 9 is constituted integrally with the continuous footing 1. The intervals 6 of arrangement can be formed efficiently when spacers 10 are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the floor of a building, and more particularly to an improvement of a floor in a cold region.

[0002]

2. Description of the Related Art Conventionally, a block-shaped thick panel made of a closed-cell hard resin foam is laid closely in the surrounding section of a cloth base, and integrated with the surrounding cloth base on the block-shaped panel. In addition, a plurality of slab floor devices and block-shaped thick panels are laid in close contact with each other, and a block-shaped thick slab is provided. 2. Description of the Related Art There is known a building floor device in which a moisture-proof sheet for covering a meat panel contact portion is additionally provided on a lower surface side (for example, Japanese Patent Application Laid-Open No. 1-2689).
See No. 45 publication. Hereinafter, this is referred to as a first conventional technique. According to the first prior art, although the concrete floor is formed, since the heat insulating material is not provided on the outer peripheral surface of the cloth foundation, in a cold region, although there is a difference depending on the region, the freezing depth is different. (About 60-100 cm)
The cold spreads from the fabric foundation to the dirt floor and cools the whole dirt floor, and at the same time, dissipates the heat storage of the dirt floor into the soil. Propagation to the floor of the soil, making the use of moisture-proof sheets meaningless,
Poor moisture proof. In a cold region, when the cloth foundation and the floor of the soil absorb moisture, they freeze in the cold season, causing cracks, and shortening the life of the soil floor.

The present inventor has proposed an invention which solves the problem of the first prior art. According to the invention of the present inventor, as shown in FIGS. 3 and 4, at the same time as the structure of the cloth foundation 1 ', a foam heat insulating material 2' is provided on the outer peripheral surface of the cloth foundation 1 ',
The inside of the surrounding section of the cloth foundation 1 'is backfilled with backfill soil 3', a ballast 4 'is laid on the backfill soil, and after rolling the ballast, a moisture-proof sheet 7' is laid, and the moisture-proof sheet 7 'is laid. A foam insulation material 5 'is laid, a dirt reinforcing bar 8' is assembled above the foam insulation material, and a dirt concrete is cast on the foam insulation material to form a dirt floor 9 'integrally with the cloth foundation 1'. That's what it means. (For example, refer to JP-A-4-315614. Hereinafter, this is referred to as a second conventional technique.)

According to the second prior art, the foam insulation on the outer peripheral surface of the fabric base can prevent the transmission of cold and moisture to the floor, and prevent the heat of the floor from escaping into the ground. This second function
The prior art can be said to be a significant invention. However, in the second prior art, the moisture-proof sheet laid on the rolled ballast may be broken or cut by the ballast, and in that case, it must be re-laid, and the work efficiency is reduced. And the construction period was adversely affected. If the moisture-proof sheet is damaged as described above, it is conceivable that the sheet will not be laid again. However, in this case, the foam insulation must be laid directly on the ballast.

[0005] With this construction, there is a possibility that the heat of the slab floor may escape into the soil from the contact portion between the foamed heat insulating materials and the contact portion between the foamed heat insulating material and the cloth foundation, and that the moisture of the ballast may be removed from the soil. There is a concern that it will be transmitted to the floor, and the floor will not be a preferable floor. Damage to the moisture barrier sheet described above often appears to occur when the gravel is square.

The present invention has been made by paying attention to these prior arts. In particular, the present invention aims to improve the second prior art, in which a moisture-proof sheet which is easily damaged by a ballast is laid on the ballast. Avoiding the method, while adopting construction means of laying foam insulation directly on the ballast, the heat of the dirt floor does not escape into the soil, and moisture in the soil passes through the ballast to the dirt floor. The purpose is to propose a useful slab that does not rise.

[0007]

The present invention takes the following measures to achieve the above-mentioned object. First, at the same time as the construction of the cloth foundation, a foam insulation material is provided around the outer peripheral surface of the cloth foundation, the inside of the surrounding section of the cloth foundation is backfilled with backfill soil, and a ballast is laid on the backfill soil. After the baluns are compacted, foam insulation is laid with a gap between the foam insulation and the gap between the foam insulation and the gap between the foam insulation and the fabric base. It means that a slab rebar is assembled above the heat insulating material, and then a slab concrete is cast on the foamed heat insulating material to form a slab floor integrally with the cloth foundation. Secondly, the space between the foam insulation and the space between the foam insulation and the fabric base are formed by disposing the spacers, and then the foam insulation in-situ is injected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given with reference to FIGS. The constituent means of the cloth foundation 1 and the foam heat insulating material 2 are the same as the constituent means disclosed in the above-mentioned Japanese Patent Application No. 4-315614. That is, the cloth foundation 1 and the foam insulation 2
The base reinforcing bar 12 and the cloth reinforcing bar 13 are assembled on the ballast 11 laid after the excavation, and the base concrete 14 is formed and simultaneously formed. The cloth foundation 1 and the foam heat insulating material 2 include an inner mold (not shown) standing on the base concrete 14 and a foam heat insulator 2 detachably fixed to the entire peripheral surface of one side of the outer mold 15. Place the base concrete 14 on the formwork (not shown) side.
Fabric concrete is cast between the foam insulation 2 of the outer formwork 15 erected above. The cloth foundation 1 and the foam insulation 2 are formed at the same time if the outer mold 15 is removed from the foam insulation 2 after the hardening of the cloth concrete. Moisture resistance is improved.

As described above, in order to surround the foam heat insulating material 2 on the entire outer peripheral surface of the cloth foundation 1 simultaneously with the construction of the cloth foundation 1,
As a fastening means between the heat insulating material and the outer mold 15, a fastening means such as nailing, which can be easily removed, is employed. The outer mold 15 may be removed from the foam insulation 2 at any time after the hardening of the cloth concrete, or may not be removed as in the illustrated example. When the cloth foundation 1 is constructed,
The inside of the surrounding section of the cloth foundation is backfilled with backfill soil 3, a ballast 4 is laid on the backfill soil, and after rolling compaction, a foam insulation material 5 is laid. This foam insulation material 5 is used for heat insulation and moisture proof like the foam insulation material 2 to prevent the floor from being cooled by the cold and to prevent the heat of the floor from escaping into the soil. It also prevents moisture and demonstrates its moisture-proof function.

The foam insulation 2 and the foam insulation 5
Uses a plate of a well-known expanded polystyrene resin (styrene foam resin having a thickness of about 50 mm). The thickness of the heat insulating materials 2 and 5 is not limited to 50 mm, and may be 50 mm or more. (For example, it is used by selecting from a thickness of about 50 to 100 mm.) The laying means of the foamed heat insulating material 5 does not employ the laying means for directly bringing the heat insulating materials into close contact with each other like a tatami mat. A new laying means of laying while forming the arrangement interval 6 by the spacer 10 is adopted.

The purpose of laying the foam insulating material 5 while forming the spacing 6 with the spacers 10 is as follows.
In order to improve the heat insulation performance and the moisture proof performance by the heat insulation layer, the heat insulation layer 7 is formed by injecting the in-situ foamable heat insulating material 7 into the inside of the ballast 4. This is because even if mixed ballasts are present, there is no need to worry about the heat insulation performance and moisture-proof performance being reduced due to the angular ballus. Foam insulation 5
As described above, if the foamed heat insulating material of the plate body is used as described above,
Even if the baluns 4 are squared, there is no need to worry that the foamed heat insulating material 5 is cut to the extent that the foamed heat insulating material 5 is depressed, and the same can be said for the foamed heat insulating material 7 on site.

As the spacer 10 used to form the arrangement interval 6, one having a width of substantially the same size (for example, about 100 mm wide) is selected from wood pieces, metal pieces, plastic pieces and the like. The ball is placed on the ballast 4, or a molded piece having a width of substantially the same size (about the same size as above) is placed on the ballast 4. The shape of the spacer 10 is a cube, a rectangular parallelepiped,
The end material or the molded piece having a circular shape (including all circular shapes) or other square shapes, and is disposed on the ballast 4 for each width and / or length of the foamed heat insulating material 5. The configuration may be either a simple arrangement or a bonding to the ballast 4.

As described above, when the foamed heat insulating material 5 is laid on the ballast 4 while forming the spacing 6 by the spacers 10, the space between the heat insulating materials and the spacing 6 between the heat insulating material and the fabric base 1 are located on site. A foamable heat insulating material 7 (for example, foamed polyurethane foam or other foamable resin in place) is injected and foamed to form a heat insulating layer. Arrangement interval 6
When the in-situ foaming heat insulating material 7 injected into the inside rises higher than the laid foam heat insulating material 5, the rising portion is cut to make the surface flush. When the foamed heat insulating material 5 is laid without any gaps on the ballast 4 as described above, the earth reinforcement 8 is assembled above the heat insulating material and the foamed in-situ foamed heat insulating material 7, and the end of the reinforcing steel is connected to the cloth reinforcing steel. After joining and integrating to the floor 13, concrete between the floors is cast and integrated with the cloth foundation 1 to form the floor 9. The length, thickness, and other dimensions of each member in the embodiment described above are examples of easy-to-handle dimensions, moderate dimensions that do not impair the heat insulation function, airtight function, and the like. It is not something to be done.

[0014]

As described above, according to the present invention, the cloth foundation having the foam insulation on the outer peripheral surface can be efficiently constructed by surrounding the foam insulation on the outer peripheral surface of the cloth foundation simultaneously with the construction of the cloth foundation. Of course, it is possible to prevent the cold and moisture from propagating to the soil floor and the heat of the soil floor from escaping into the soil with the foam insulation material. Without laying the foam, lay the foam insulation at intervals, and inject the foamable insulation at the site between the foam insulation and the spacing between the insulation and the cloth foundation, and foam the insulation. By forming the heat insulation layer, foam insulation is laid directly on the ballast without any gaps, the heat of the intersoil floor dissipates into the soil under the floor, and the moisture in the soil under the floor passes through the ballast. Not only can it prevent propagation to the floor, Even if there is a sharp thing in the fabric, the foam insulation on the ballast will not be torn by this, and you will not have to do unnecessary work such as re-laying the moisture-proof sheet. And shorten the construction period. Therefore, the second prior art described above can be improved. Since the spacing between the foamed heat insulating materials on the ballast and the space between the heat insulating material and the fabric base are formed by arranging the spacers, the space between the foamed heat insulating materials can be formed efficiently with less variation in dimensions, By injecting the foaming heat insulating material, it is possible to efficiently configure a heat insulating structure for a clay floor having excellent heat insulating properties and moisture resistance.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal perspective view of a masonry floor completed by the masonry floor construction method of the present invention.

FIG. 2 is a partial cross-sectional view taken along line (2)-(2) in FIG.

FIG. 3 is a partially longitudinal perspective view of the earthen floor of the second prior art.

FIG. 4 is a partial cross-sectional view taken along line (4)-(4) in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fabric foundation 2 ... Foam insulation material 3 ... Backfill soil 4 ... Ballus 5 ... Foam insulation material 6 ... Arrangement interval 7 ... Foam heat insulation material on site 8.・ Soil reinforcement 9 ・ ・ ・ Soil floor 10 ・ ・ ・ Spacer

Claims (2)

[Claims] At the same time as the construction of the cloth foundation, a foam heat insulating material is provided around the outer peripheral surface of the cloth foundation, the inside of the surrounding section of the cloth foundation is backfilled with backfill soil, and a ballast is laid on the backfill soil. After compacting this ballast, foam insulation is laid at intervals,
In-situ foaming insulation is injected into the spaces between the foam insulations and the space between the foam insulation and the cloth foundation, and a slab reinforcing bar is assembled above the foam insulations. A slab floor construction method in which concrete is cast and a slab is constructed integrally with the fabric foundation. 2. The method according to claim 1, wherein the in-situ foaming heat insulating material is injected after the spacing between the foam heat insulating materials and the spacing between the foam heat insulating material and the fabric base are formed by disposing the spacers. .