Thermal insulation structure

Abstract

To improve insulation performance while minimizing the impact on ceiling height in four-story buildings with a height of 10 meters or less.SOLUTION: An insulation structure 1 is applied to a four-story building 100 having a height of 10 m or less. An insulation material 20 is disposed in a recess 10 formed in a slab 110 in a predetermined range from an inner surface 120a of an exterior wall 120 dividing the exterior and the interior, so that a top end level is lower than in other ranges. The slab 110 incorporates a thickened portion 112 added to the predetermined slab 110 specified as a structural member. The recess 10 in which the insulation material 20 is disposed is formed in the thickened portion 112. The insulation material 20 is disposed in the recess 10 to a position lower than the level of the slab 110 in portions other than the portion where the recess 10 is formed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a heat insulation structure applied to a four-story building with a height within 10 m.

Background Art

[0002] Depending on the area where a building is constructed, etc., if the height exceeds 10 m, it will be subject to various regulations (for example, Article 56-2 of the Building Standards Law that defines the exclusion of the application of shadow regulations), and it has been causing inconvenience to the neighborhood. Generally, when building a multi-story building with a height of 10 m or less, in order to secure a floor height that does not impair the habitability and keep the height within 10 m, it has been a three-story building.

[0003] However, if the site area is the same, making it a four-story building enables a wider living space compared to a three-story building. Therefore, the applicant has proposed a four-story building with a height within 10 m (see Patent Document 1).

[0004] In recent years, an improvement in the heat insulation performance of buildings has been demanded. Specifically, in a building, when a heat insulating material is arranged on the inner surface side of an outer wall that partitions the outside and the inside, since the heat insulating material cannot be arranged at the part where the slabs of the outer wall are continuous, a heat bridge phenomenon occurs where heat escapes from this part. Therefore, in order to prevent the heat bridge phenomenon, it is required to arrange a heat insulating material within a predetermined range from the outer wall in the slab.

[0005] For example, Patent Document 2 proposes a heat insulation reinforcement structure of a building structure in which a heat insulation board is arranged on the upper surface of a floor slab and a self-leveling material is poured up to a position higher than the heat insulation board to fix the heat insulation board to the floor slab.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] However, in the thermal insulation reinforcement structure of Patent Document 2, a thermal insulation board is laid on top of the slab, and then a self-leveling material is poured on top of that, which increases the thickness of the finished floor. As a result, there is a problem that the ceiling height, which is the height from the finished floor surface to the ceiling, is reduced by the amount that has been increased by the thermal insulation board and self-leveling material.

[0008] In four-story buildings with a height of 10m or less, there is a demand to reduce the thickness of floor finishing materials in order to ensure a ceiling height that does not impair livability, and therefore the thermal insulation reinforcement structure described in Patent Document 2 cannot be adopted.

[0009] This invention has been made in view of the above points, and aims to improve thermal insulation performance in a four-story building with a height of 10m or less, while minimizing the impact on ceiling height. [Means for solving the problem]

[0010] (1) An insulating structure applicable to a four-story building with a height of 10m or less, An insulating structure characterized in that insulating material is placed in a notch formed in a predetermined area of ​​the slab from the inner surface of the wall separating the exterior and interior, such that the top surface level is lower than that of other areas.

[0011] In invention (1), the thermal insulation structure applicable to a four-story building with a height of 10m or less is characterized in that thermal insulation material is placed in a notch formed in a predetermined range of the slab from the inner surface of the wall separating the exterior and interior, such that the top level is lower than that of the rest of the slab.

[0012] In this way, by placing insulation material within a predetermined range on the inner surface of the wall separating the exterior and interior, thermal bridging can be prevented, and insulation performance can be improved. Furthermore, by placing the insulation material in a notch formed so that the top level is lower than that outside the predetermined range, it is possible to prevent the ceiling height from being reduced due to the thickness of the insulation material. Therefore, in four-story buildings with a height of 10m or less, it is possible to improve thermal insulation performance while minimizing the impact on ceiling height.

[0013] (2) The slab is a predetermined slab defined as a structural element, with a furring portion added to it. The thermal insulation structure according to (1), characterized in that the notch in which the thermal insulation material is placed is formed in the furring portion.

[0014] In this case, the predetermined thickness of the slab defined as a structural element cannot be reduced (no notches can be formed). According to the invention of (2), a notch can be formed in the furring portion added to a predetermined slab defined as a structural element, and insulation material can be placed in this notch in the furring portion. This makes it possible to place insulation material without affecting the structural element and while minimizing the impact on the ceiling height.

[0015] (3) The insulation structure according to (1), characterized in that the notch in which the insulation material is placed is formed in the slab of the predetermined range by a stepped slab whose top surface level is lower than that of the other range.

[0016] According to invention (3), a notch is formed in a slab within a predetermined range by a stepped slab whose top surface level is lower than that of other ranges, and insulation material can be placed in this notch in the furring portion. As a result, the stepped slab can be used as a notch for placing insulation material, eliminating the need to separately form a notch solely for placing insulation material. Therefore, insulation material can be placed more easily while minimizing the impact on ceiling height. [Effects of the Invention]

[0017] According to the present invention, in a four-story building with a height of 10 m or less, the heat insulation performance can be improved while suppressing the influence on the ceiling height.

Brief Description of the Drawings

[0018] [Figure 1] FIG. 1 is a view showing an outline of a building to which a heat insulation structure according to an embodiment of the present invention is applied. [Figure 2] FIG. 2 is a view showing a cross section of a living room of a building to which a heat insulation structure according to an embodiment of the present invention is applied. [Figure 3] FIG. 3 is a view showing a cross section of a space other than a living room of a building to which a heat insulation structure according to an embodiment of the present invention is applied.

Embodiments for Carrying Out the Invention

[0019] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. In the following drawings, the same elements are denoted by the same numbers or symbols throughout the description of the embodiments.

[0020] (A four-story building with a height of 10 m or less) FIG. 1 is a view showing an outline of a building to which a heat insulation structure according to an embodiment of the present invention is applied. In FIG. 1, the left side shows a cross section of a living room where residents spend more time, and the right side shows a cross section of an entrance hall which is a space temporarily used by residents.

[0021] A four-story building 100 with a height of 10 m or less is made of reinforced concrete, and the floor height (the height from the FL of a certain floor to the FL of the next upper floor) is 2500 mm (10 m / 4) or less. Also, the thickness of a predetermined slab 110 defined as a structure of the building 100 on this scale needs to be 150 mm or more.

[0022] Furthermore, since residents spend more time in the living spaces of a building (Building 100), there is a demand to increase the ceiling height (height from the floor surface to the ceiling surface) of these spaces (for example, 2300mm or more) to improve livability, as lower ceiling heights increase the feeling of confinement in these spaces. On the other hand, spaces other than living spaces, such as entrances, corridors, and bathrooms, are spaces that residents use only temporarily, so livability does not decrease even if the ceiling height is not as high as that of living spaces.

[0023] In such a building 100, in order to prevent thermal bridging and improve thermal insulation performance, it is necessary to apply thermal insulation to the exterior wall 120, which is an example of a wall separating the exterior and interior, and to the upper and lower surfaces of the slab 110 within a predetermined range (for example, a range of 450 mm or more from the inner surface 120a) of the exterior wall 120.

[0024] Furthermore, when insulating the slab 110 within a predetermined range from the inner surface 120a of the exterior wall 120, at least the upper surface of the slab 110 in a living room becomes the floor, so after placing the insulation material, it is necessary to make it flat so that there are no steps.

[0025] (Insulated structure) In the thermal insulation structure 1, the thermal insulation material 20 is placed in notches 10, 10A formed in a predetermined range of the slab 110 from the inner surface 120a of the outer wall 120, which is a wall separating the outside and the inside, so that the top level is lower than in other areas.

[0026] The insulation material 20 is, for example, insulating mortar, but is not limited to this. Any material can be used as long as it has higher insulation performance than concrete and can be used as a base for floor finishing materials (for example, wood-based flooring or tiles).

[0027] (Insulation structure of living spaces) Figure 2 shows a cross-section of a living room in a building to which an insulating structure according to an embodiment of the present invention is applied. In a living space, the slab 110 has a furring section 112 (for example, 20 mm thick) added on top of the structural slab 111 (for example, 150 mm thick).

[0028] In the living space, a notch 10 is formed in the slab 110 by not providing a furring portion 112 within a predetermined range from the inner surface 120a of the exterior wall 120. An insulating material 20 is then placed in this notch 10. For example, by making the insulating material 20 15 mm thick and placing a leveling material 5 mm thick on top of it, the surface becomes flush with the part of the slab 110 other than the part in which the notch 10 is formed, and it becomes the base for the floor finishing material 130.

[0029] This allows for insulation treatment of the upper surface of the slab 110 within a predetermined range from the inner surface 120a of the exterior wall 120, without creating any steps on the floor in the living space.

[0030] Such a notch 10 is formed as follows. When pouring concrete to raise a certain floor, a plate with the same thickness as the depth of the notch 10 (for example, 20 mm) is placed in the concrete before it hardens. The top surface of this plate is aligned with the top of the concrete before hardening (FL: the height that serves as the reference plane for that floor, as shown in Figure 2), and the concrete is allowed to harden. Then, when the formwork is removed, the plate is removed, thereby forming the notch 10.

[0031] In this case, if the floor height is limited to 2500 mm (10 m / 4) or less, adopting a raised floor (double floor) for the floor finish would increase the required dimensions of the floor finish, thus reducing the ceiling height. For this reason, in this embodiment, it is desirable to directly apply the floor finishing material 130 (for example, wood-based flooring material) to the floor.

[0032] According to the thermal insulation structure 1 of this embodiment, in a four-story building 100 with a height of 10m or less, where the floor height can only be 2500mm, by using a structural slab 111 with a thickness of 150mm, a furring portion 112 (insulation material 20) with a thickness of 20mm, a floor finishing material 130 (for example, wood-based flooring material, etc.) with a thickness of 15mm, and directly attaching a ceiling finishing material 140 (for example, vinyl wallpaper, etc.) to the underside of the upper floor slab 110, the ceiling height can be made 2315mm, at least outside a predetermined range from the inner surface 120a of the exterior wall 120. This prevents thermal bridging and improves insulation performance, while also preventing the formation of steps due to the placement of insulation material 20 on the floor, reducing the feeling of confinement caused by low ceilings, and preventing a decrease in livability in the living space.

[0033] (Insulation structure of spaces other than living rooms) Figure 3 shows a cross-section of a space other than a living room in a building to which the thermal insulation structure according to an embodiment of the present invention is applied.

[0034] In spaces other than living rooms, the slab 110 has a notch 10A formed by a stepped slab within a predetermined range from the inner surface 120a of the exterior wall 120, where the top surface level is lower than in other areas. Insulation material 20 is placed in this notch 10A. The insulation material 20 placed in the notch 10A serves as the base for the floor finishing material 130A that is placed on top of it.

[0035] Generally, in houses, the entrance floor is finished one step lower than the floors of the living rooms and corridors leading to them, or it is finished with a finishing material (for example, porcelain tiles) that is taller than the finishing material (for example, wood-based flooring) used for the living rooms and corridors leading to them. If the floors of the living rooms and corridors leading to them are raised floors, even if the top of the slab is at the same height in the living room area and the entrance area, not using a raised floor for the entrance creates a step at the boundary between the floors of the living rooms and corridors leading to them and the entrance floor, so the entrance can be finished one step lower, or it can be finished with a finishing material that is taller than the entrance.

[0036] However, in this embodiment, where the floors of living rooms and corridors connected to living rooms are finished by direct bonding, if the entrance is to be finished one step lower, a stepped slab is formed on the slab 110 to make the entrance slab 110 one step lower. Also, if a floor finishing material 130A (for example, a porcelain tile requiring a height of 45 mm) that requires a greater height dimension than the floor finishing material 130 of the living room (for example, a wood-based flooring material requiring a height dimension of 15 mm) is to be placed in the entrance, if the top surface of the slab is formed at the same height in the living room and entrance areas, the finished surface of the floor finishing material 130A in the entrance will protrude beyond the finished surface of the floor of the living room and corridor connected to living room. Therefore, a stepped slab is formed on the slab 110 to make the entrance slab 110 one step lower. In other words, in specifications where the floors of living rooms and corridors connected to living rooms are finished by direct bonding, regardless of whether or not insulation material 20 is used, it is necessary to form a stepped slab in the slab 110, creating a step at the boundary between the living room or corridor connected to the living room and the entrance.

[0037] The notch 10A is formed by the stepped slab of the slab 110, and the insulation material 20 is placed in it. In this way, the stepped slab, which is formed regardless of whether or not the insulation material 20 is present, can be used as the notch 10A for placing the insulation material 20, thus eliminating the need to separately form a notch 10A solely for placing the insulation material 20. Therefore, the insulation material can be placed more easily while minimizing the impact on the ceiling height.

[0038] Furthermore, the height dimension of the step in the stepped slab of slab 110 is 45 mm if, for example, the floor finishing material 130A for the entrance is porcelain tile, and if the thickness of the insulation material 20 of 15 mm is added to this, it becomes 60 mm.

[0039] As described above, in the living space, the slab 110 has a furring section 112 (20 mm thick) added on top of the structural slab 111 (150 mm thick). On the other hand, in the entrance slab 110, by omitting the furring section 112 (20 mm thick), the height dimension of the step in the structural slab 111 (the height dimension that protrudes from the bottom surface of the slab 110 towards the lower floor) can be reduced to 40 mm (60 mm - 20 mm). This makes it possible to prevent the space above the ceiling of the lower floor from being compressed while still providing insulation when a stepped slab is formed.

[0040] It is desirable to place insulation material 21 (e.g., synthetic resin foam) on the underside of the slab 110 within a predetermined range (for example, a range of 450 mm or more from the inner surface 120a of the exterior wall 120). Such insulation material 21 is placed, for example, by spraying synthetic resin foam onto the inner surface 120a of the exterior wall 120, and extending the spray to the above predetermined range on the underside of the slab 110. It is desirable to cover the insulation material 21 with a ceiling finishing material consisting of gypsum board with wallpaper attached.

[0041] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be obvious to those skilled in the art that various modifications or improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention. [Explanation of symbols]

[0042] 1. Insulated structure 10,10A Notch 20,21 Insulation 100 Buildings 110 Slab 111 Structural slab 112 Fukashi portion 120 Exterior Wall 130, 130A Floor finishing material 140 Ceiling finishing materials

Claims

[Claim 1] An insulating structure applicable to a four-story building with a height of 10m or less, Insulation material is placed in a notch formed in a predetermined area of ​​the slab on the inner surface of the wall separating the exterior and interior, such that the top level is lower than in other areas. The aforementioned slab is a predetermined slab defined as a structural element, with a thickened portion added. The notch in which the thermal insulation material is placed is formed in the furring portion, The thermal insulation structure is characterized in that the thermal insulation material is positioned in the notch to a position lower than the portion of the slab other than the portion in which the notch is formed.

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