JP4028821B2 - Thermal insulation reinforcement structure of building structure and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating reinforcement structure for a building structure and a construction method thereof.
[0002]
[Prior art]
Conventionally, heat insulation folding is known as a heat insulation reinforcement of an inner heat insulation method in an apartment house. This folding is to insulate the floor, pillars and beams connected to the outer wall within a certain range. This is the part where the outer wall is connected to the floor, pillars and beams when the outer wall is insulated from the inside. Since heat insulation is cut off, heat escapes from this part, that is, a thermal bridge phenomenon occurs, and it is said that 10% to 15% of the heat in the dwelling unit is lost. For this reason, the “next-generation energy saving standard” defines that “folding” is within a predetermined range from the outer wall (see, for example, Non-Patent Document 1 and Non-Patent Document 2).
[0003]
However, as shown in FIG. 3 (shown on page 268 of Non-Patent Document 2), in a condominium where a floor covering 22 is directly stretched on a concrete ceiling or floor 21, spraying heat insulation is performed. Insufficient compressive strength of the material 23, that is, the problem of being too soft, and the bulge due to unevenness after spraying is conspicuous, so it cannot be used as a foundation for the direct floor finish. That is, a double floor finish is assumed. In other conventional examples, this folding is not performed at all.
[0004]
[Non-Patent Document 1]
Weekly housing information “Heat insulation”, June 20, 2001, p. 1092, 1093.
[Non-Patent Document 2]
Issued by the Energy Conservation Organization of Housing and Architecture, “Next Generation Energy Conservation Standards and Guidelines for Residential Buildings” November 1, 1999, p. 266-268.
[0005]
[Problems to be solved by the invention]
However, the double floor finishing in which the floor finishing material 22 is laid on the upper surface of the heat insulating material 23 is not only complicated, but also leads to an increase in cost and floor height. Moreover, such a thing which does not return at all does not satisfy the next-generation energy saving standard naturally. In addition, in the conventional example with direct floor finishing, it is necessary to cut out (cut out) the top surface of the floor slab in advance, which increases the work required for formwork, concrete placement, demolding, etc., and flat floor slab Problems with accuracy are likely to occur.
[0006]
Accordingly, an object of the present invention is to provide a heat insulating reinforcement structure for a building structure that can achieve a straight floor finish without notching a floor slab, prevent a thermal bridge phenomenon, and meet the next-generation energy-saving standards, and its construction method. It is to provide.
[0007]
[Means for Solving the Problems]
The first feature of the heat insulation and reinforcement structure for a building structure according to the present invention is a floor slab that is not cut, an outer wall partition wall or sash provided on the floor slab, and an upper surface of the floor slab. The outer peripheral end surface covers the heat insulation board with a predetermined width continuously laid in contact with the outer peripheral partition wall or the inner peripheral surface of the sash and the upper surface of the floor slab, and fixes the heat insulation board in a predetermined position. Self-leveling material, foamed urethane heat insulating material sprayed from the outer peripheral edge of the heat insulating board to the inner peripheral surface of the outer wall partition or sash, and the self-leveling material and the heat insulating board. And floor finish.
[0008]
The second feature of the heat insulating reinforcing structure of this building structure is that the floor slab that is not cut out, the outer wall partition wall or sash provided on the floor slab, and the outer wall partition wall or sash from the surface of the floor slab. A predetermined width of the urethane foam heat insulating material sprayed toward the inner peripheral surface of the sash and the upper surface of the floor slab continuously applied in contact with the inner peripheral surface of the urethane foam heat insulating material. A heat-insulating mortar, a self-leveling material that covers the upper surface of the floor slab, and fixes the heat-insulating mortar at a predetermined position, and a floor finishing material provided in the self-leveling material or the heat-insulating mortar. Is where you are.
[0009]
The third feature is that the self-leveling material covers the heat insulating board or the heat insulating mortar.
[0010]
The fourth feature is that the self-leveling material is at the same level as the heat insulating board or the heat insulating mortar.
[0011]
The first feature of the construction method of the heat insulation and reinforcement structure for a building structure according to the present invention is the step of constructing or attaching an outer wall partition wall to a floor slab that is not notched, and the inner wall of the outer wall partition wall or sash. A process of constructing a heat insulation board with a predetermined width in contact with the peripheral surface, and after constructing the heat insulation board, the foamed urethane heat insulating material is applied from the upper surface of the outer peripheral edge of the heat insulation board to the inside of the outer wall partition wall or sash. It exists in the place which has the process of spraying toward a surrounding surface, and the process of constructing a self-leveling material inside the said heat insulation board.
[0012]
The second feature of the construction method of the heat insulation reinforcing structure for a building structure according to the present invention is the step of constructing an outer wall partition wall or attaching a sash to a floor slab that has not been cut, and the outer wall from the surface of the floor slab. A step of spraying urethane foam heat insulating material toward the inner peripheral surface of the partition wall or sash, a step of applying heat insulating mortar having a predetermined width on the inner peripheral surface of the foamed urethane heat insulating material on the upper surface of the floor slab, and the heat insulating mortar And a step of applying a self-leveling material on the upper surface or the inner side.
[0013]
Further, the third feature of the construction method of the heat insulation reinforcing structure is that the construction level of the self-leveling material covers the heat insulation board or the heat insulation mortar.
[0014]
Furthermore, a fourth feature of the construction method of the heat insulation reinforcing structure is that the construction level of the self-leveling material is the same level as the heat insulation board or the heat insulation mortar.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the drawings, first, a first embodiment of a heat insulating reinforcement structure for a building structure according to the present invention will be described. The embodiment shown in FIG. 1 does not have a waist wall like a sweep-out window. A floor slab 1 having a structure and not cut is provided with a sash 3 through an outer wall partition wall 2 and a mortar 31, and a heat insulating board 6 having a predetermined width is provided on the upper surface of the floor slab 1. The outer peripheral end face is continuously laid with an adhesive in contact with the inner peripheral surface of the mortar 31 filling the gap between the sash 3 and the floor slab 1 (hereinafter referred to as “the inner peripheral surface 31a of the sash”). Furthermore, the self-leveling material 8 covers the upper surface of the floor slab 1 and fixes the heat insulating board 6 at a predetermined position. Further, the urethane foam heat insulating material 7 is sprayed from the outer peripheral end of the heat insulating board 6 to the inner peripheral surface 31 a of the sash and the inner surface of the sash 3. The floor finishing material 9 is provided so as to cover the self-leveling material 8 and the heat insulating board 6.
[0016]
Next, an embodiment of the construction method of the heat insulating reinforcement structure for a building structure according to the first embodiment will be described. In the apartment house, the veranda 1a and the floor slab 1 are constructed, and the floor slab is notched. There is no processing. An outer wall partition wall 2 is constructed on the upper surface of the floor slab 1, and a sash 3 is attached to the outer wall partition wall and the floor slab 1, and the sash, the floor slab 1, and the outer wall partition wall 2 are formed by a mortar 31. Fill the gap. The outer surfaces of the floor slab 1 and the mortar 31 are waterproofed with a composite coating film to form a mortar base 4, which is well known in the art. Further, a sealing material 5 is injected between the sash 3 and the mortar base 4 to enhance waterproof performance.
[0017]
Therefore, the floor slab 1 of the frame is not cut out, and the outer end of the heat insulating board 6 having a predetermined width, for example, 20 cm width is brought into contact with the inner peripheral surface of the inner peripheral surface 31a of the sash. It is continuously laid and fixed with an adhesive in a state along the inner peripheral surface. As the heat insulating board 6, for example, a hard polyurethane foam having a thickness of 10 to 15 mm is used as a core material, and both sides thereof have a moisture-proof reinforcing layer. For example, an Achilles folded board (Achilles Co., Ltd. product) can be used. This heat insulation board 6 has the heat insulation performance equivalent to foaming urethane. Thereafter, the urethane foam heat insulating material 7 is sprayed from the upper surface of the outer peripheral end portion of the heat insulating board 6 toward the inner peripheral surface 31 a of the sash or the inner surface of the sash 3. In this way, since the laying work of the heat insulation board 6 is performed prior to the operation of blowing the urethane foam heat insulating material 7, the heat bridge portion can be completely removed from the heat insulation board 6 by simply blowing the urethane foam. Can be insulated.
[0018]
After that, the self-leveling material 8 is poured into the upper surface of the floor slab 1 inside the heat insulation board 6 and installed, and the position of the heat insulation board 6 is fixed to the floor slab 1. According to an experimental example, it was found that the Achilles folded board has a high compressive strength and good adhesion to the self-leveling material 8. This means that when a person rides on the lower frame 10 of the sash, which will be described later, even if a large load is applied via the kick plate 11, it will not fall.
[0019]
A kick plate 11 is provided between the self-leveling material 8 and the lower frame 10, and a base board 12 is provided on the front surface of the kick plate. The floor finishing material 9 is provided on the self-leveling material 8 with the outer end of the floor finishing material 9 in contact with the skirting board 12. When the heat insulating board 6 is exposed, the flooring material 9 is provided on the self-leveling material 8 and the upper surface of the heat insulating board.
[0020]
In the first embodiment, the sash 3 is attached to the floor slab 1 through the mortar 31 using the sweeping sash. As the second embodiment, the outer wall section rising from the floor slab 1 is used. The case where the wall 2 is formed will be described. Similarly, when there is a waist wall, the outer end of the heat insulation board 6 is in contact with the inner peripheral surface (substantially the same as the inner peripheral surface 31a of the sash) of the outer wall partition wall, and the urethane foam heat insulating material 7 is the outer wall partition. Sprayed to the inner peripheral surface of the wall.
[0021]
Thus, in the present invention, the blowing of the urethane foam heat insulating material 7 is performed by the first embodiment and the floor slab which are sprayed on the mortar 31 of the sash 3 depending on the presence or absence of the outer wall partition wall 2 rising continuously from the floor slab 1. There is a second mode of spraying on the inner peripheral surface of the outer wall partition wall 2 standing up continuously from 1.
[0022]
Moreover, if the construction level of the self-leveling material 8 is constructed so as to cover the heat insulating board 6 as shown in the drawing, the accuracy of flatness can be easily secured. However, it is not limited to covering the heat insulation board 6, and the construction level of the self-leveling material may be the same level as that of the heat insulation board 6. The board can be used as a construction level ruler for the self-leveling material 8.
[0023]
Moreover, although the heat insulation board is used in the said 1st, 2nd embodiment, what uses the heat insulation mortar 61 instead of a heat insulation board as shown in FIG. 2 as a 3rd embodiment. is there. As the heat insulating mortar 61, there is an inorganic light weight mortar having a function of preventing heat insulation and condensation, and this includes a semi-liquid admixture and cement made of a light micro hollow body, carbon fiber, synthetic resin and water-soluble resin. For example, there is “ID mortar” (trade name of Nippon Kasei). In FIG. 2, in the embodiment in which the heat insulating mortar 61 is applied, the construction in which the urethane foam 71 is sprayed on the inner peripheral surface 31 a of the sash is performed first, and then the heat insulating mortar 61 is disposed on the inner peripheral surface of the urethane foam 71. When constructed on the floor slab 1, the mortar is filled into the irregular surface of the foamed urethane 71 without any gaps. However, in the third embodiment, there is a problem that the heat insulating mortar 61 is longer than the heat insulating board 6 in the time required for solidification.
[0024]
In the third embodiment, the self-leveling material 8 is poured as in the first and second embodiments, but the construction level is to cover the heat insulating mortar 61 as shown in FIG. When constructed, the flatness accuracy can be easily secured. However, as in the first and second embodiments, it is not limited to covering the heat insulating mortar 61. Even if the level of the self-leveling material is the same as that of the heat insulating mortar 61, Good.
Moreover, in the 4th embodiment, the structure of the outer wall partition wall 2 standing | starting up continuously from the floor slab 1 may be sufficient like the said 2nd embodiment. Then, the urethane foam heat insulating material 71 is first sprayed on the inner peripheral surface of the outer wall partition wall, and then the heat insulating mortar 61 is applied to the floor slab 1 in a state of contacting the inner peripheral surface of the urethane foam heat insulating material 71. .
[0025]
【The invention's effect】
Therefore, according to the heat insulation reinforcement structure of a building structure and its construction method according to the present invention, it is possible to finish the floor directly, and the heat insulation board can be turned to the outer wall partition wall or the inner peripheral surface of the sash. Is easy, prevents thermal bridge phenomenon, and can meet the next generation energy saving standards.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view.
FIG. 2 is a cross-sectional view showing another embodiment.
FIG. 3 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor slab 2 Outer wall partition wall 3 Sash 31 The mortar 31a which fills the crevice The sash inner peripheral surface 4 The mortar base 6 The heat insulation board 61 The heat insulation mortar 7 The urethane foam 71 The urethane foam 8 The self-leveling material 9 The floor finishing material

Claims (8)

Floor slabs that are not cut and
An outer wall partition wall or sash provided on the floor slab;
On the upper surface of the floor slab, the outer peripheral end surface is a heat insulating board having a predetermined width that is continuously laid in contact with the outer peripheral partition wall or the inner peripheral surface of the sash;
A self-leveling material that covers the upper surface of the floor slab and fixes the heat insulation board in place;
A foamed urethane heat insulating material sprayed from the outer peripheral end of the heat insulating board to the outer peripheral partition wall or the inner peripheral surface of the sash,
A heat-insulating / reinforcing structure for a building structure, comprising the flooring material provided on the self-leveling material or the heat-insulating board. Floor slabs that are not cut and
An outer wall partition wall or sash provided on the floor slab;
A foamed urethane heat insulating material sprayed from the surface of the floor slab toward the outer wall partition wall or the inner peripheral surface of the sash;
On the upper surface of the floor slab, a heat insulating mortar having a predetermined width that is continuously applied in a state in contact with the inner peripheral surface of the urethane foam heat insulating material,
A self-leveling material that covers the upper surface of the floor slab and fixes the heat-insulating mortar in place;
A heat-insulating / reinforcing structure for a building structure comprising the flooring material provided in the self-leveling material or the heat-insulating mortar. 3. The heat insulating reinforcement structure for a building structure according to claim 1, wherein the self-leveling material covers the heat insulating board or the heat insulating mortar. 3. The heat insulating reinforcing structure for a building structure according to claim 1, wherein the self-leveling material is at the same level as the heat insulating board or the heat insulating mortar. A process of installing an outer wall partition wall or attaching a sash to a floor slab that has not been cut;
A step of constructing a heat insulating board having a predetermined width in contact with the inner peripheral surface of the outer wall partition wall or the sash;
After applying this heat insulation board, blowing urethane foam heat insulating material from the upper surface of the outer peripheral end of the heat insulation board toward the outer peripheral wall or the inner peripheral surface of the sash,
And a step of applying a self-leveling material on the inside of the heat insulating board. A process of installing an outer partition wall or a sash on a floor slab that has not been cut;
Spraying urethane foam heat insulating material from the surface of the floor slab toward the outer wall partition wall or the inner peripheral surface of the sash;
A step of constructing a heat insulating mortar having a predetermined width on the inner peripheral surface of the foamed urethane heat insulating material on the upper surface of the floor slab;
And a step of constructing a self-leveling material on the upper surface or inside of the heat-insulating mortar. 7. The construction method for a heat-insulating / reinforcing structure of a building structure according to claim 5, wherein a construction level of the self-leveling material covers the heat insulation board or the heat insulation mortar. 7. The construction method for a heat-insulating / reinforcing structure for a building structure according to claim 5, wherein the level of construction of the self-leveling material is the same level as that of the heat insulation board or heat insulation mortar.

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