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 thermal insulation structure that can be applied to a four-story building with a height of 10 m or less. [Background technology]

[0002] Depending on the region where a building is constructed, if the height exceeds 10m, it will be subject to various regulations (for example, Article 56-2 of the Building Standards Act, which stipulates exemptions from shadow regulations), and it will cause inconvenience to neighbors. Generally, when building a multi-story building under 10m, it has been made three stories tall to ensure a floor height that does not impair livability and to keep the height under 10m.

[0003] However, if the site area is the same, a four-story building can provide a larger living space than a three-story building. Therefore, the applicant has proposed a four-story building with a height of 10 m or less (see Patent Document 1).

[0004] In recent years, there has been a demand for improved thermal insulation performance in buildings. Specifically, when placing thermal insulation on the inner side of an exterior wall that separates the interior from the exterior of a building, the thermal insulation cannot be placed in the area where the exterior wall slab joins, resulting in a thermal bridging phenomenon in which heat escapes from this area. Therefore, in order to prevent the thermal bridging phenomenon, it is necessary to place the thermal insulation within a specified range from the exterior wall in the slab.

[0005] For example, Patent Document 2 proposes an insulation reinforcement structure for building structures in which an insulation board is placed on the top surface of a floor slab and a self-leveling material is poured in up to a position higher than the insulation board, thereby fixing the insulation board in place on the floor slab. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3890075 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-360278 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the insulation reinforcement structure of Patent Document 2, insulation boards are laid on top of the slab, and then a self-leveling material is poured on top of that, which makes the finished floor thicker. This poses a problem in that the ceiling height, which is the height from the finished floor surface to the ceiling, is reduced by the amount of thickness increased by the insulation boards and self-leveling material.

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

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

[0010] (1) A thermal insulation structure applied to a four-story building with a height of 10 m or less, An insulated structure characterized in that insulation material is placed in a recess formed in a slab within a specified range from the inner surface of a wall separating the outside from the inside, so that the top level is lower than in other ranges.

[0011] In the invention (1), the heat insulation structure applied to a four-story building with a height of 10m or less has heat insulation material placed in a recess formed in the slab within a specified range from the inner surface of the wall separating the outside from the inside, so that the top level is lower than in other areas.

[0012] In this way, by placing insulation within a specified range from the inner surface of the wall that separates the outside from the inside, it is possible to prevent thermal bridging and improve insulation performance.Furthermore, by placing the insulation in a recess formed so that the ceiling level is lower than outside the specified range, it is possible to prevent the ceiling height from being reduced due to the thickness of the insulation. Therefore, in a four-story building with a height of 10m or less, it is possible to improve the insulation performance while minimizing the impact on ceiling height.

[0013] (2) The slab is a specified slab defined as a structure to which a recessed portion is added, The heat insulating structure described in (1) is characterized in that the recess in which the heat insulating material is placed is formed in the recessed portion.

[0014] Here, the thickness of a given slab defined as a structure cannot be reduced (no notches can be formed). According to the invention of (2), a notch is formed in the recessed portion added on top of a specified slab defined as a structure, and the insulation material can be placed in the notch of the recessed portion. This allows the insulation material to be placed without affecting the structure and while minimizing the impact on the ceiling height.

[0015] (3) The insulating structure described in (1), characterized in that the recess in which the insulating material is placed is formed by a stepped slab in the slab in the specified range, the top level of which is lower than that of the other ranges.

[0016] According to the invention of (3), a notch is formed in a specified area of ​​the slab by a step slab whose top level is lower than the other areas, and insulation can be placed in this notch. This allows the step slab to be used as a notch for placing insulation, eliminating the process of forming a separate notch just for placing insulation. This makes it easier to place insulation while minimizing the impact on ceiling height. [Effects of the Invention]

[0017] According to the present invention, it is possible to improve the thermal insulation performance of a four-story building with a height of 10 m or less while minimizing the impact on ceiling height. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a diagram showing an overview of a building to which a thermal insulation structure according to an embodiment of the present invention is applied. [Figure 2] 1 is a diagram showing a cross section of a room in a building to which a thermal insulation structure according to an embodiment of the present invention is applied. [Figure 3] 1 is a diagram showing a cross section of a space other than a room in a building to which a thermal insulation structure according to an embodiment of the present invention is applied. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of 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 designated by the same numbers or symbols throughout the description of the embodiments.

[0020] (4-storey buildings up to 10m in height) FIG. 1 is a diagram showing an outline of a building to which a thermal insulation structure according to an embodiment of the present invention is applied. In Figure 1, the left side shows a cross-section of the living room where residents spend most of their time, and the right side shows a cross-section of the entrance hall, a space that residents use temporarily.

[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 floor level of one floor to the floor level of the next floor up) is 2500 mm (10 m / 4) or less. In addition, the thickness of the specified slab 110 specified as the structural element of a building 100 of this size must be 150 mm or more.

[0022] Furthermore, since residents spend more time in the living rooms of building 100, the lower the ceiling height (height from the finished floor surface to the finished ceiling surface) of the living rooms, the more oppressive the feeling in the rooms becomes, so there is a demand to make it higher (for example, 2300 mm or more) to improve livability. On the other hand, spaces other than the living rooms, such as the entrance, corridor, and bathroom, are spaces that residents use temporarily, so livability does not decrease even if the ceiling height is not as high as that of the living rooms.

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

[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 the living room will become the floor, so after placing the insulating material, it needs to be made flat to prevent any steps.

[0025] (Insulated structure) In the heat insulating structure 1, heat insulating material 20 is arranged in notches 10, 10A formed in a predetermined range of the slab 110 from the inner surface 120a of the exterior wall 120, which is a wall separating the outside from the inside, so that the top level is lower than in other ranges.

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

[0027] (Room insulation structure) FIG. 2 is a diagram showing a cross section of a room in a building to which a thermal insulation structure according to an embodiment of the present invention is applied. The slab 110 in the living room has a structural slab 111 (for example, 150 mm thick) on which a recessed portion 112 (for example, 20 mm thick) is added.

[0028] In the slab 110 of the living room, a recess 112 is not provided within a predetermined range from the inner surface 120a of the exterior wall 120, thereby forming a notch 10. Then, a heat insulating material 20 is placed in this notch 10. For example, by making the thickness of the heat insulating material 20 15 mm and placing a leveling material with a thickness of 5 mm on top of it, the heat insulating material 20 will be flush with the parts of the slab 110 other than the part where the notch 10 is formed, and will serve as a base for the floor finishing material 130.

[0029] This allows the upper surface side of the slab 110 within a predetermined range from the inner surface 120a of the exterior wall 120 to be thermally insulated without creating a step on the floor of the room.

[0030] Such a notch 10 is formed as follows. When pouring concrete to create a certain floor, a plate with the same thickness as the depth of notch 10 (for example, 20 mm) is placed in the unhardened concrete, and the top surface of this plate is aligned with the top edge of the unhardened concrete (FL in Figure 2: the height that becomes the reference plane for that floor), and the concrete is allowed to harden. Then, when the formwork is dismantled, the plate is removed, forming notch 10.

[0031] Here, if the floor height is limited to 2500 mm (10 m / 4) or less, using a double floor for the floor finish will increase the required dimensions of the floor finish and restrict the ceiling height. For this reason, in this embodiment, it is desirable to use a floor finishing material 130 (for example, a wood-based floor material) that is directly laid for the floor finish.

[0032] According to the insulation structure 1 of this embodiment, by using the above-mentioned configuration, in a four-story building 100 with a height of less than 10 m, where the floor height can only be 2500 mm, by making the structural slab 111 150 mm thick, the recessed portion 112 (insulating material 20) 20 mm thick, the floor finishing material 130 (e.g., wood-based flooring, etc.) 15 mm thick, and directly attaching the ceiling finishing material 140 (e.g., vinyl wallpaper, etc.) to the underside of the upper floor slab 110, the ceiling height can be made 2315 mm, at least outside a specified range from the inner surface 120a of the exterior wall 120. This prevents the thermal bridge phenomenon, improves the heat insulating performance, prevents the formation of a step due to the placement of the heat insulating material 20 on the floor, reduces the oppressive feeling caused by a low ceiling, and prevents the livability of the room from decreasing.

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

[0034] In the slab 110 in the spaces other than the living room, a notch 10A is formed by a step slab in a predetermined range from the inner surface 120a of the exterior wall 120, where the top level is lower than in the other ranges. Then, a heat insulating material 20 is placed in this notch 10A. The heat insulating material 20 placed in the notch 10A serves as a base for a floor finishing material 130A to be placed on top of it.

[0035] Generally, in a house, the floor of the entrance hall is finished one step lower than the floors of the living rooms and the hallway leading to the living rooms, or is finished with a finishing material (such as porcelain tile) that is higher than the finishing material (such as wood flooring) of the floors of the living rooms and the hallway leading to the living rooms. If the floors of the living rooms and the hallway leading to the living rooms are laid as a floor, even if the top edge of the slab is the same height as the living room and the hallway, by not using the hallway as a floor, a difference in level will be created at the boundary between the floor of the living room or the hallway leading to the living rooms and the floor of the entrance hall, so the entrance hall can be finished one step lower or with a finishing material that is higher in height than the entrance hall.

[0036] However, in a specification in which the floors of living rooms and hallways leading to the living rooms are finished directly, as in this embodiment, if it is desired to finish the entrance one step lower, a step slab is formed in slab 110 to finish the entrance slab 110 one step lower. Also, if it is desired to place floor finishing material 130A (e.g., porcelain tile requiring a height of 45 mm) in the entrance that requires a height dimension greater than floor finishing material 130 of the living room (e.g., wood flooring requiring a height dimension of 15 mm) in the entrance, if the top edge of the slab is formed to be the same height in the living room portion and the entrance portion, the finished surface of floor finishing material 130A in the entrance will protrude from the finished surface of the floor of the living room or the hallway leading to the living room. Therefore, a step slab is formed in slab 110 to finish the entrance slab 110 one step lower. In other words, in specifications where the floors of living rooms or corridors leading to living rooms are finished with direct laying, regardless of whether insulation material 20 is used or not, it is necessary to form a step slab in slab 110 that creates a step at the boundary between the living room or corridor leading to the living room and the entrance.

[0037] The notch 10A is formed by a step slab of this kind of slab 110, and the insulating material 20 is placed in it. In this way, the step slab, which is formed regardless of whether the insulating material 20 is present or not, can be used as the notch 10A for placing the insulating material 20, so the process of separately forming the notch 10A just for placing the insulating material 20 can be eliminated. Therefore, the insulating material can be placed more easily while minimizing the impact on the ceiling height.

[0038] Furthermore, the height dimension of the step of the step slab of slab 110 is 45 mm when the floor finishing material 130A of the entrance is made of porcelain tile, and when the thickness of the heat insulating material 20 is added, 15 mm, the height becomes 60 mm.

[0039] As described above, the slab 110 in the living room has a recessed portion 112 (20 mm thick) added on top of the structural slab 111 (150 mm thick). On the other hand, by omitting the recessed portion 112 (20 mm thick) in the entrance slab 110, the height dimension of the step of the structural slab 111 (the height dimension protruding from the underside of the slab 110 toward the floor below) can be kept to 40 mm (60 mm - 20 mm). This makes it possible to provide insulation when a step slab is formed and prevent the space above the ceiling on the floor below from being compressed.

[0040] It is desirable to place a heat insulating material 21 (for example, a synthetic resin foam material) on the underside of the slab 110 within a predetermined range from the inner surface 120a of the exterior wall 120 (for example, within a range of 450 mm or more from the inner surface 120a). Such heat insulating material 21 is placed, for example, by spraying the synthetic resin foam material onto the inner surface 120a of the exterior wall 120 and also spraying it up to the above-mentioned predetermined range on the underside of the slab 110. It is desirable to cover the heat insulating material 21 with a ceiling finishing material made by pasting wallpaper on gypsum board.

[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 apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modifications and improvements can also be included within 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 Underside 120 Exterior Wall 130,130A Floor finishing material 140 Ceiling Finishing Materials

Claims

[Claim 1] A thermal insulation structure applied to a four-story building with a height of 10 m or less, The insulation material is placed in a recess formed in the slab within a specified range from the inner surface of the wall separating the exterior and interior, so that the top level is lower than in the other ranges. The slab is a predetermined slab defined as a structure to which a recessed portion is added, The recess in which the heat insulating material is disposed is formed in the recessed portion, An insulating structure characterized in that the insulating material is arranged in the notch to a position lower than the rest of the slab other than the portion where the notch is formed.

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