JPH10121486A - Work execution method of ship's bottom-shaped heat insulated foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to construct with in a short period of time a heat insulated foundation which may be used also as a heat storage body by assembling expanded plastic plates in a ship bottom shape, arranging and assembling reinforcement rods and molding boxes for a foundation beam portion and a foundation slab portion, and depositing concrete. SOLUTION: Expanded plastic plates 1 are assembled in a ship's bottom shape on the ground. Next, reinforcement rods 4a, 4b for a foundation beam portion and reinforcement rods for a foundation slab portion, and molding boxes 5 are assembled. As concrete is deposited, a ship bottom-shaped, heat-insulated foundation is formed in which heat insulating material and concrete are united into a single body. Finally the molding boxes 5 are removed, earth filling or earth banking is made as required on the outside peripheral portion of the foundation. Therefore, the concrete surface opposite the indoor side is completely covered with heat insulating material and is not exposed directly to the elements or ground moisture. Since the entire indoor side is made of concrete as a heat insulated structure, the temperature is kept relatively constant throughout summer and winter. Thus, heat insulated property and heat storage property are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a ship bottom foundation in which an outer peripheral portion is surrounded by a foundation beam and a foundation slab is formed on an inner bottom portion thereof. The present invention relates to a method of constructing a ship bottom type insulation foundation that can be used.

[0002]

2. Description of the Related Art Conventionally, in wooden houses, high heat insulation and
Various measures have been taken to ensure high airtightness and improve durability and living environment. For example, in houses in cold regions, a basic heat insulation method has been frequently used in which the underfloor space is thermally insulated from the outer space by insulating the foundation and the underfloor space is used as a space inside the building.

[0003] In the conventional foundation heat insulation method, as shown in FIG.
Generally, as shown in FIG. 5, or as shown in FIG. 5, a heat insulating material 101 is applied to the rising portion of the foundation beam 102 and the lower surface of the foundation slab 103.

[0004] The above-mentioned conventional thermal insulation method will be briefly described.

[0005] In the case of continuous footing as shown in FIG. 4, after the concrete of the footing 104 is cast, the heat insulating material 101 is installed inside the formwork of the foundation beam 102 and the concrete is cast. When the mold is removed after the concrete has hardened, the heat insulating material 101 and the foundation beam are bonded and integrated. Next, leveling mortar 105 for level adjustment is installed on the upper surface of the foundation beam, and the heat insulating material 101 is cut in accordance with the level of the leveling mortar 105. In the base heat insulation method, since airtightness between the foundation and the base is required, the base 106 is fixed after laying a packing material (not shown) on the leveling mortar 105.

In the case of a continuous footing + foundation slab as shown in FIG. 5, after the concrete of the footing 104 is cast, the heat insulating material 101 is installed inside the formwork of the foundation beam 102, and the concrete Is installed. After the concrete is hardened, the formwork of the foundation beam is dismantled, and then the foundation slab is grounded. Next, after laying the heat insulating material 101 'and further arranging the reinforcement of the foundation slab, concrete is poured. Hereinafter, the smoothing mortar 10
5. A packing material (not shown) and a base 106 are installed.

[0007]

In the heat insulating basic structure shown in FIG. 4, the underfloor space can be thermally insulated from the outer space, but the underfloor space and the ground are not thermally insulated. In particular, heat can easily escape from the indoor side to the ground during winter heating, and there is a limit to improvement in heat insulation even if heat insulation and airtight treatment of the wall surface and the roof surface are sufficiently performed.

On the other hand, in the heat insulating foundation structure as shown in FIG. 5, heat loss from the indoor side to the ground can be considerably improved and high heat insulation can be realized. However, as described above, concrete is poured into three parts. (Even if the concrete for the footing part and the beam part are cast at the same time, it is necessary to carry out the work in two separate steps), and there is a problem in that the construction takes time and effort. Further, since the foundation (particularly, a large-volume foundation slab portion) has a large heat capacity, it has been studied to use it as a heat storage in a passive solar system that has been recently implemented. And the ground was not completely thermally isolated, so the foundation could not be fully utilized as a heat storage.

In view of the above circumstances, an object of the present invention is to provide a construction method capable of constructing a heat insulating foundation which can realize high heat insulation and can be effectively used as a heat storage body in a shorter time.

[0010]

SUMMARY OF THE INVENTION The present invention, which has been made to achieve the above object, is a method for thermal insulation construction of a ship bottom type foundation in which an outer peripheral portion is surrounded by a foundation beam and a foundation slab is formed on an inner bottom portion thereof. Then, the synthetic resin foam plate is assembled into a ship bottom shape, the reinforcing beams of the foundation beam portion and the foundation slab portion are formed and the formwork is formed, and then concrete is poured.

According to the present invention, prior to the casting of concrete, the arrangement of the heat insulating material (synthetic resin foam board), the arrangement of the reinforcing bars and the formwork can be completed. Insulation foundation can be constructed.

Further, the heat insulating foundation constructed according to the present invention has a complete external heat insulating structure using a synthetic resin foam plate formed in a ship bottom shape as a heat insulating material, realizing high heat insulation and effectively utilizing it as a heat storage body. Insulation foundation is realized.

[0013]

FIG. 1 shows an example of a heat insulating foundation constructed according to the present invention. In the figure, 1 is a synthetic resin foam plate assembled in a ship bottom shape, 2 is a foundation beam of an outer peripheral portion,
2 'is the inner foundation beam and 3 is the inner bottom foundation slab. Such a heat-insulating foundation is a bottom-type solid foundation without a footing portion.
Has a complete external heat insulation structure using as a heat insulating material.

The construction method of the present invention will be specifically described with reference to FIG. 2 by taking the heat insulating foundation shown in FIG. 1 as an example. FIG. 2 shows a cross section taken along line AA of FIG.

First, appropriate groundwork (FIG. 2A) is performed.
Since the ship bottom type heat insulating foundation according to the present invention has a solid foundation structure without a footing portion, it is not always necessary to perform root cutting as in the past, and is generally used for leveling and splitting ground, leveling and dumping concrete. It can be done with simple local business.

Next, the synthetic resin foam plate 1 is assembled on the ground in a ship bottom shape (FIG. 2B). The ship bottom type assembling with the synthetic resin foam plate 1 can be performed by connecting a synthetic resin foam plate processed to a predetermined size in accordance with the board splitting with an adhesive or an adhesive tape. Since the synthetic resin foam board can be easily processed with a cutter knife etc., in order to improve the workability and airtightness at the time of assembling the bottom of the ship, the joint part of each synthetic resin foam board should have a desired cross-sectional shape It is preferable to process it. The height H of the ship bottom shape is usually set to be several cm higher than the height of the foundation to be constructed.

The synthetic resin foam plate 1 can be used in combination of any size. However, in consideration of transportability, on-site workability, etc., it is generally 500 mm × 1000 mm to 2000 m.
Those having a size of about mx 3000 mm are suitable.

As a material of the synthetic resin foam plate 1, a material having excellent heat insulating properties is used, and particularly preferably a material having no water retention and excellent in durability is preferable. For example, a polystyrene foam, a hard urethane foam And phenol foam. The thickness of the synthetic resin foam plate 1 is determined by the heat insulation performance required from the design environment temperature and the like in each region.
mm to about 100 mm.

When a material such as polystyrene foam, which is likely to be deteriorated by ultraviolet rays before surface finishing, is used as the synthetic resin foam plate 1, an outer surface such as a resin mortar layer, a calcium silicate plate, or a flexible board is provided on one surface. It is preferable to form a material and then assemble the outer peripheral portion of the ship bottom shape with the surface on which the exterior material is formed outside.

Such a resin mortar layer can be formed by applying a resin mortar layer to the surface of a synthetic resin foam plate, and the applied thickness is usually about several mm. Specifically, for example, a resin mortar obtained by adding 0 to 100 parts of silica powder, 5 to 25 parts of a resin such as styrene butadiene latex, and 50 to 100 parts of water to 100 parts of cement can be used. Further, a calcium silicate plate, a flexible board and the like can be attached to a synthetic resin foam plate with an adhesive.

Next, as shown in FIG. 2C, the reinforcing bars 4a and 4b of the foundation beam portion and the reinforcing bars 4 of the foundation slab portion are provided.
c, Form frame 5 is further assembled. Incidentally, the synthetic resin foam plate of the outer peripheral portion can also be used as a formwork of the foundation beam, especially when the above-mentioned calcium silicate plate or a flexible board is used, a separate formwork is required. Not required.

A ship bottom-shaped assembly using the synthetic resin foam plate 1;
The arrangement of reinforcing bars and the formwork are not limited to the above procedures, but can be determined as appropriate in consideration of workability. For example, after the laying of the synthetic resin foam plate at the bottom and the reinforcement arrangement of the foundation slab are completed, the assembly of the synthetic resin foam plate at the peripheral portion and the reinforcement arrangement and formwork of the foundation beam can be performed.

After completing the arrangement of the heat insulating material (synthetic resin foam plate 1), the reinforcing arrangement and the formwork as described above,
By casting the concrete, a ship-bottomed heat-insulating foundation in which the heat insulating material and concrete are integrated is formed (Fig. 2).
(D)). Finally, after removing the formwork, burying or embankment is performed on the outer peripheral portion of the foundation as necessary.

In the ship bottom type heat insulating foundation according to the present invention, the concrete surface on the side opposite to the indoor side is entirely covered with the heat insulating material so that it is not directly exposed to wind and rain or the moisture of the ground. Since the temperature is kept relatively constant throughout the summer and winter, the durability of the foundation itself can be improved. In addition, since the load is transmitted to the ground surface by the entire solid foundation with reinforcing steel, it is expected that the earthquake resistance on soft ground will be improved.

Further, since the ship bottom type heat insulation foundation according to the present invention has a complete external heat insulation structure, the heat storage effect is improved, and it is extremely suitable as a foundation for a house employing a passive solar system. Hereinafter, this point will be briefly described with reference to FIG.

FIG. 3 is a cross-sectional view schematically showing one example of construction around the foundation of a wooden house. In this construction example, after constructing the ship-bottom type insulation foundation according to the procedure described above, leveling the mortar 105 on the upper surfaces of the foundation beams 2 and 2 ', laying packing as necessary, and then mounting the base 106 Fix it.
Then, the heat insulating material 6 on the wall surface is attached to the outside of the pillar 107,
An airtight treatment is applied to a joint portion between the base and the heat insulating material 1. In the construction of a highly heat-insulated and air-tight house, the entire building except for the opening has a heat-insulating structure, and the heat-insulating material is attached without gaps all around the building.

When the base is used as a heat storage in a passive solar system, for example, during cooling in summer, cold outside air at night is introduced into the underfloor space to store heat in the concrete foundation which is a heat storage, and the cool air in the underfloor space is used during the day. Then, cool the living room (using cooling equipment such as a heat pump air conditioner if necessary). In addition, during winter heating, warm air in the roof space that rises between the outer wall and the heat insulating material during the day is introduced into the underfloor space and stored in the concrete foundation, which is a heat storage body, and the warm air in the underfloor space is used at night ( It is conceivable to heat the living room (using heating equipment as needed).

In the example shown in FIG. 3, two pipes 109 are passed through the partition wall 108, one pipe is used to introduce cold or warm air into the underfloor space, and the other pipe is used to warm or cool the underfloor space. It is used to introduce cold air into living rooms.

As described above, since the heat-insulating foundation constructed according to the present invention has a complete external heat-insulating structure, it is possible to efficiently store the sensible heat of cold or warm air introduced into the underfloor space on the foundation having a large heat capacity. It is possible and very effective for use as a heat storage in the passive solar system as described above.

[0030]

As described above, according to the method of constructing a ship bottom type heat insulating foundation according to the present invention, a foundation of a complete external heat insulating structure can be constructed by a single casting of concrete. It is not always necessary to cut off the roots as in the conventional case, and it is possible to end up with a simple local business. Therefore, a highly heat-insulated basic structure can be realized in a shorter period.

In particular, when a synthetic resin foam plate having a resin mortar layer, an outer material such as a calcium silicate plate or a flexible board formed on the outer surface of a ship bottom is used, the synthetic resin foam plate is exposed to ultraviolet rays. Deterioration can be prevented, and the occurrence of a heat-insulating defect due to this deterioration can be prevented. Further, such a synthetic resin foam plate can be sufficiently used as a formwork of a foundation beam, and a heat insulating material and a formwork can be simultaneously installed, thereby further shortening a construction period.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an example of a ship bottom type heat insulating foundation constructed according to the present invention.

FIG. 2 is a sectional view for explaining a construction method of the present invention.

FIG. 3 shows a ship bottom type insulation foundation constructed according to the present invention;
It is sectional drawing which showed typically an example used as the foundation of the house which employs a passive solar system.

FIG. 4 is a diagram for explaining a basic heat insulation method of a conventional example.

FIG. 5 is a diagram for explaining a basic heat insulation method of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Synthetic resin foam board (heat insulation material) 2, 2 'Foundation beam 3 Foundation slab 4a, 4b, 4c Reinforcement 5 Formwork 6 Wall insulation material 101 Thermal insulation material 102 Foundation beam 103 Foundation slab 104 Footing 105 Leveling mortar 106 Base 107 Column material 108 Partition wall 109 Piping

Claims (3)

[Claims] 1. A method for thermally insulating a ship bottom foundation in which an outer peripheral portion is surrounded by a foundation beam and a foundation slab is formed on an inner bottom portion thereof, comprising: assembling a synthetic resin foam plate into a ship bottom shape; After arranging the reinforcing slab and the formwork of the basic slab,
A method of constructing a ship-bottomed insulation foundation characterized by casting concrete. 2. The construction according to claim 1, wherein the outer peripheral portion of the bottom shape is assembled with the exterior material of a synthetic resin foam plate having an exterior material formed on one side thereof facing outward. Method. 3. The method according to claim 1, wherein the synthetic resin foam plate is used as a formwork of a rising portion of a foundation beam.