JPH10121484A - Heat insulating foundation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat insulation property, workability, and airtightness by providing top ends of molding boxes serving also as heat insulation members on both sides with base sheets for attaching top end members, attaching the top end members having heat insulating property along the top ends of both of the molding boxes serving also as heat insulation members and by pouring top end mortar between top end side surface members. SOLUTION: Foundation concrete 3 is deposited between opposite heat insulation members 2, 2 which serve also as molding boxes. Next, top end member attaching base sheets 4 are provided to be integral with the top end outside surfaces of both of the heat insulation members 2 serving also as molding boxes. Top end side surface members 5 having heat insulation property are attached in the state of projecting upward to the top end member attaching base sheets 4. Top end mortar 6 is deposited between both of the top end side surface members 5, 5. Since the top end side surface members 5 having heat insulation property are attached to the heat insulation member 2 serving also as molding boxes in the top end portion of a foundation 1, heat insulation property of the top end mortar 6 is secured, heat insulation property is prevented from lowering due to heat bridge through the top end mortar 6 to provide an excellent heat insulation foundation structure. Thus, heat insulation property, workability, and airtightness are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating foundation in a house for cold regions and other buildings.

[0002]

2. Description of the Related Art As a heat insulating basic structure for a house in a cold region, the present applicant has proposed a structure shown in FIG. 6 (Japanese Patent Application No. 7-28).
No. 7967). This is because the facing insulating material 51 also serves as a formwork.
The base concrete 52 is cast between the bases 51 so that the mold and heat insulating material 51 is left as a base heat insulating material after the base concrete 52 is hardened. The mold frame and heat insulating material 51 is made of urethane foam. According to this, an excellent heat insulating property is obtained by the mold and heat insulating material 51, and since there is no need to remove the mold, a basic structure excellent in workability is obtained. By covering the entire circumference of the foundation portion of the building with such a heat insulating foundation and keeping the underfloor space airtight with respect to the outdoors, the underfloor space can be insulated against outdoor cool air, and high heat insulation inside the building can be obtained. Therefore, the heat insulation structure on the floor can be simple.

[0003]

However, the heat insulating basic structure having the structure shown in FIG. 6 is not satisfactory with respect to the heat insulating property and the workability at the top end. That is, the top end mortar 53 is cast at the top end to level the top end surface to the same level, but since the top end mortar 53 is not covered with the heat insulating material, heat insulation cannot be obtained. . If there is even a portion having such low heat insulating property, a so-called heat bridge occurs, and the heat insulating property of the entire base 50 is greatly reduced. Therefore, it is desirable to provide a heat insulating material also around the top end mortar 53. However, if such a local heat insulating treatment is performed separately, the number of steps is increased, and the workability is significantly reduced. In addition, it is desired that the top end face of the foundation 50 be leveled accurately and accurately not only in terms of building accuracy but also in terms of ensuring airtightness. Installation is difficult, and the top end of the foundation concrete generally has some irregularities. This unevenness is leveled by the top mortar 53, but it takes time and skill to level the top surface of the top mortar 53 to the same level with high precision.

[0004] On the other hand, the above-mentioned mold and heat insulating material 51 integrally has a portion for forming the upper surface of the base base portion 50b and has a bent shape, and the strength of the bent portion 51a is lower than that of concrete. There is a concern that it will be insufficient during casting. When the mold and heat insulating material 51 is damaged, the heat insulating property is reduced at that location, and the heat bridge leads to a decrease in the heat insulating property of the entire foundation. Insufficient strength of the bent portion 51a of the heat-insulating material 51 can be solved by increasing the wall thickness, but it is difficult to form a locally thick portion due to foaming.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a heat insulating foundation structure capable of improving the heat insulating property, workability, and airtightness of a top end. Another object of the present invention is to make it possible to eliminate a local lack of strength of a heat insulating material that also serves as a mold with a simple configuration.

[0006]

SUMMARY OF THE INVENTION A heat insulating foundation of the present invention is a heat insulating foundation of a cloth foundation comprising a facing heat-insulating material which also serves as a formwork, and a foundation concrete placed between the heat-forming materials also serving as a formwork. A top end mounting base is provided at the upper end of both the formwork and heat insulating material, and a heat insulating top end side member projecting upward along the upper end of the both formwork and heat insulating material is attached. The top mortar is cast between the top side members. According to this configuration, the heat insulating property of the top mortar portion is secured by attaching the heat-insulating top side surface member to the mold and heat insulating material. In addition, even if the accuracy of the upper end level of the mold and heat insulator is not accurate, the upper end level of the top end side member can be easily fixed by adjusting the mounting height of the top end side member to the form and heat insulator. Level. Therefore, the top side mortar can be used as a ruler when setting the top mortar. Can be cast. Therefore, the workability is good, and the level accuracy of the top end surface is improved, so that it is easy to secure airtightness with the outer wall disposed thereon, and the heat insulation of the building base can be further improved.

In the above structure, a recess extending along the length direction may be provided on the outer surface of the upper end of the heat insulating material that also serves as a mold, and the lower portion of the top end side member may be disposed in the recess. By providing the concave portion in this manner, it is possible to prevent the top end side member from protruding in the thickness direction of the foundation, and the fitting is good. In the vicinity of the upper end of the foundation, the concrete pressure at the time of placing the foundation concrete is low, and there is no problem of insufficient strength even if the heat insulating material which also serves as a form is thinned due to the formation of the recess. In these configurations, the top end side member may be made of a metal plate and a heat insulating material made of a foamed resin attached to the back surface of the metal plate. By providing the metal plate part in this way,
The top end side member can be easily and firmly fixed to the mold and heat insulating material with a fixing tool such as a screw. At the upper end of this metal plate, a downwardly facing base cover locking piece for locking the lower end of the base cover may be provided. Thus, the lower end of the base cover can be easily fixed, and the metal plate also serves as a component of the top end side member and a locking member of the base cover, thereby reducing the number of members.

Further, in these configurations, when the heat-insulating material also serves as a mold unit, the heat-insulating material integrally has a base-part upper-surface molding part and a base-part side molding part for molding the upper surface and the side surface of the base part. A reinforcing resin meshed with a resin tape in a portion from the lower end of the foundation rising portion forming portion on the inner surface of the formwork / heat insulating material to the upper end of the foundation rising portion forming portion via the base portion upper surface forming portion. A lath may be attached. By attaching such a lath, it is possible to easily reinforce a bent portion which tends to be insufficient in strength of the formwork and heat insulating material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. This heat insulating foundation structure is applied to a cloth foundation for a house in a cold region, and has a basic structure in which a foundation concrete 3 is cast between facing mold and heat insulating materials 2 and 2 facing each other. A plurality of molds and heat insulators 2 having a predetermined width are arranged side by side in the longitudinal direction of the foundation. Foundation concrete 3
Has a rising portion 3a and a base portion 3b extending from the lower end to both sides, and the base portion 3b is tapered so that the upper surface is lowered to both end sides. The mold and heat insulating material 2 is formed by molding a foamed resin such as urethane foam or styrofoam in a mold, and forms a base rising portion forming portion 2a and a base portion upper surface so as to conform to the shape of the basic concrete 3 described above. The section 2b and the base section side forming section 2c have a cross-sectional shape that follows the bent plate shape.

On both outer sides of the upper ends of the mold and heat insulating materials 2 and 2 on both sides, a top end mounting base 4 is integrally provided, and a heat insulating top end side member 5 is provided on the top end mounting base 4. To protrude. A top mortar 6 is cast between the top side members 5 on both sides. A concave portion 7 is provided along the length direction on the outer surface of the upper end of the mold and heat insulating material 2, and the top end side member 5 is provided so as to substantially fit in the depth of the concave portion 7 in the base thickness direction. The top end material mounting base 4 is a folded plate that covers the bottom surface of the concave portion 7 that is the outer surface of the mold / heat insulator 2, the upper surface of the mold / heat insulator 2, and the upper end of the inner surface of the mold / heat insulator 2. It is in the shape. The top end mounting base 4 is made of a metal plate such as an iron plate, and is integrated with the mold and heat insulating material 2 by the adhesive property of the foamed resin when the mold and heat insulating material 2 is foamed. The urethane foam has a strong adhesive force to the iron plate, and when the formwork heat insulating material 2 is made of urethane, the top end material mounting base 4
Are tightly integrated.

The top end side member 5 is formed by laminating a heat insulating material 9 on the back surface of a metal plate 8 such as an iron plate, and the heat insulating material 9 is made of a foamed resin such as urethane foam or styrene foam. As the heat insulating material 9, for example, a material formed in advance into a plate shape and cut into a predetermined shape is used. The metal plate 8 is provided with a horizontal piece 8a bent outward at the upper end, and bent downward from the tip of the horizontal piece 8a to form a base cover locking piece 8b. The top end side member 5 is fixed to the top end mounting base 4 by a fixing tool 10 made of a screw or the like such as a tapping screw with a drill penetrated from the outside of the metal plate 8, so that the top end side mounting member 4 becomes Mounted.

On the top end mortar 6 of the foundation 1, a base 11 made of a shaped steel or the like is arranged and installed on an anchor bolt 12 of the foundation 1. On the base 11, the wall panel 1
3 and a floor panel (not shown) are installed, and a wall panel 13 is provided.
The space between the base 1 and the base 1 is covered with a base cover 14 from the outdoor side. The base cover 14 is formed by providing a heat insulating material 14b such as a foamed resin on the back surface of a band-shaped metal plate 14a. The base cover 14 is locked to the base cover locking piece 8b of the top end side member 5 at the lower end of the metal plate 14a. U-shaped or V-shaped locking piece 15
Is provided. A packing 22 made of a thick sheet or tape may be provided between the base cover 14 and the top surface of the top end side member 5 serving as the top end surface of the foundation 1.
Thereby, airtightness is obtained between the foundation 1 and the base cover 14.

On the outside surface of the foundation 1 on the outdoor side, the mortar layer 16
Is painted. As shown in FIG. 4 (C), scratch grooves 17 are formed in a lattice shape on the mortar application surface of the mold and heat insulating material 2 so as to enhance the adhesion to the mortar layer 16. In addition, the mold and heat insulating material 2 is provided with a reinforcing resin lath 20 (FIG. 1) at a portion from the lower end of the base rising portion forming portion 2a to the upper end of the base portion side forming portion 2c via the base portion upper surface forming portion 2b. , FIG. 2) is adhered to reinforce the bent portion. The reinforcing resin lath 20 is formed by knitting a resin tape 20a in a mesh shape as shown in FIG.
At the time of construction, the form and heat insulating materials 2 on both sides are bonded to each other while maintaining an interval by the separator 18. These form and heat insulators 2 may be installed with their lower ends fitted on groove-shaped rails 19 as shown in FIG. 2, so that the level of each form and heat insulator 2 arranged in the longitudinal direction is made constant. Is obtained.

[0014] Basically, the heat-insulating basic structure of this structure is as follows.
The underfloor space is insulated against outdoor cool air by keeping the entire periphery of the foundation of the building airtight against the outside with the heat insulating foundation 1. Thereby, even if the heat insulation treatment of the floor portion constituted by the floor panel and the like is simple, the indoor heat insulation is ensured. The foundation 1 is a heat insulating material 2 that also serves as a formwork.
Because it covers both the inner and outer surfaces of the foundation concrete 3, excellent heat insulating properties can be obtained. At the top end of the foundation 1, the heat insulation of the top end mortar 6 is ensured by attaching the heat-insulating top end side member 5 to the formwork heat insulating material 2. Therefore, a decrease in heat insulation due to the heat bridge through the top end mortar 6 is prevented, and an excellent heat insulation basic structure is obtained.

In addition, at the time of construction, even if the accuracy of the upper end level of the mold and heat insulator 2 is not high as shown in FIG. 3, for example, the mounting height of the top end side member 5 to the mold and heat insulator 2 can be reduced. By adjusting, the upper end level of the top end side surface member 5 can be easily set to a constant level. Therefore, the top end side member 5 can be used as a ruler when the top end mortar 6 is driven. That is, the top mortar 6 is cast in accordance with the upper surface level of the top side member 5 so that the top mortar 6
Can be accurately driven to a fixed level. Therefore, the workability is good, and the level accuracy of the top end face is improved, so that it is easy to obtain airtightness between the building and the outer wall disposed thereon, and further improvement of the heat insulating property of the building foundation is achieved.

In the above-described embodiment, the top end mounting base 4 is made of a metal plate. However, as shown in FIG. It may be a block-shaped piece of wood buried every other time, or may be a wooden bar (not shown) provided along the upper end of the formwork / heat insulator 2.

[0017]

According to the heat insulating basic structure of the present invention, a ceiling material mounting base is provided on the upper end of both the form and heat insulating material, and the top of the both form and heat insulating material is provided along the upper end of the both form and heat insulating material. A heat-insulating top side member protruding from the upper end surface is attached to the base material mounting base with a fixing tool, and a top end mortar is cast between both top end side members. The workability and airtightness can be improved as well as the heat insulation property of the steel. Further, when a reinforcing resin lath assembled in a mesh shape with a resin tape is adhered to a predetermined portion of the mold and heat insulator, it is possible to easily reinforce a portion where the strength of the mold and heat insulator tends to be insufficient. .

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of an arrangement form of the mold and heat insulating material.

FIG. 3 is an explanatory diagram of a method of adjusting a level of a top end side member.

FIG. 4A is a partially enlarged perspective view of a top end side member,
(B) is an enlarged front view of the reinforcing resin lath, and (C) is an explanatory view of a scratch groove of the mold and heat insulating material.

FIG. 5 is a partial perspective view of a mold and heat insulating material according to another embodiment of the present invention.

FIG. 6 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Foundation 2 ... Insulating material which also serves as a formwork 3 ... Foundation concrete 4 ... Base material for mounting a top end material 5 ... Top side surface member 6 ... Top end mortar 7 ... Depression 8 ... Metal plate 9 ... Heat insulation material 8b ... Base cover locking part 14 ... Base cover 20 ... Reinforcing resin lath

Claims (5)

[Claims] The present invention relates to a heat-insulating basic structure of a cloth foundation comprising a facing heat-insulating material for a formwork and a foundation concrete placed between the heat-insulating materials for a formwork, wherein the heat-insulating material for the formwork on both sides is provided. A top material mounting base is provided at the upper end, a heat-insulating top side member protruding upward along the upper end of the heat-insulating material for both molds is attached, and a top mortar is struck between the two top side members. Insulated basic structure installed. 2. The heat insulating basic structure according to claim 1, wherein a concave portion extending along a length direction is provided on an outer surface of an upper end of the heat insulating material also serving as a mold, and a lower portion of the top end side member is disposed in the concave portion. 3. The heat insulating basic structure according to claim 1, wherein the top end side member comprises a metal plate and a heat insulating material made of a foamed resin adhered to a back surface of the metal plate. 4. A base cover locking piece for locking a lower end of a base cover at an upper end of the metal plate.
The described heat insulation basic structure. 5. The heat-insulating material that also serves as a formwork integrally has a base portion upper surface forming portion and a base portion side surface forming portion for forming an upper surface and a side surface of the base portion of the cloth base, respectively.
For reinforcement from the lower end of the foundation rising portion forming portion on the inner surface of the formwork and heat insulating material to the upper end of the foundation rising portion forming portion via the base portion upper surface forming portion, a mesh is formed by a resin tape for reinforcement. The heat insulating basic structure according to claim 1, wherein a resin lath is stuck.