Heat insulation structure and method for constructing heat insulation structure

Abstract

To reduce labor related to a formwork for installing concrete and to avoid delay in a construction period, labor in a construction management and material management, and sharp rise of procurement cost, in a heat insulation structure in a floor slab of a building.SOLUTION: A floor slab S comprises: a deck plate 1 which is laid on a beam B and has side concrete C laminated on its upper face side; and a heat insulation material 2 laminated on a lower face side of the deck plate 1. The heat insulation material 2 is made of a thermosetting resin foam.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a heat insulation structure in a floor slab of a building and a construction method of the heat insulation structure.

Background Art

[0002] Conventionally, a heat insulation structure for blocking cold air and hot air from the ground has been adopted on the floor surfaces of buildings such as apartment houses and detached houses. For example, a structure in which a heat insulating material such as glass wool or rock wool is provided under the floor is common. However, not only the heat insulation effect but also, particularly in apartment houses, a design considering the compatibility with other materials, maintenance after construction, material costs and labor costs, construction period, work load, etc. has been demanded.

[0003] For example, Patent Document 1 discloses a heat insulation structure utilizing a deck plate that is also used as a formwork for a concrete slab of an apartment house. Specifically, a plate-shaped heat insulating material is attached to the upper surface side of the deck plate with an adhesive, and reinforcement bars are arranged from above the heat insulating material and concrete is placed, so that the installation of the heat insulating material is easy, there is no risk of the heat insulating material being blown away by the wind, and a desired heat insulation effect can be obtained.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in Patent Document 1, there is a risk that the construction period may be delayed or the construction management may become complicated because concrete cannot be placed until the laying of the heat insulating material is completed. In addition, since the deck plate and the heat insulating material have to be transported to the construction site respectively, it may take a lot of labor for material management and the procurement cost may become high. Generally, when implementing a heat insulation structure such as that in Patent Document 1, the demerits associated therewith should be overcome.

[0006] Also, when the formwork of the concrete slab corresponding to the first floor slab surface is a general formwork that is removed after the curing of the concrete, and when the concrete slab and the ground beam are cast integrally, the labor associated with the removal and transportation of the general formwork tends to be excessive. That is, since the height from the ground to the concrete slab is low, the working space for the above labor is narrow, and the larger the size of the general formwork, the larger the diameter of the opening for transporting the formwork through the concrete slab.

[0007] Therefore, through creative ideas and efforts, the inventors have found that by utilizing a structural material that doubles as a disposable formwork like a deck plate, not only can the labor load as described above be reduced, but also by further utilizing the characteristics and construction methods of the deck plate, a heat insulation structure that overcomes the demerits associated with the heat insulation structure such as that in Patent Document 1 can be realized.

[0008] Therefore, an object of the present invention is to provide a heat insulation structure and a construction method of the heat insulation structure for a floor slab of a building that reduce the labor related to the formwork for placing concrete and avoid delays in the construction period, the burden of construction management and material management, and the increase in procurement costs.

Means for Solving the Problems

[0009] That is, the present invention is It is an apartment house A heat insulation structure for a floor slab of a building, wherein the floor slab includes a deck plate laid on a beam and having concrete laminated on the upper surface side, and a heat insulating material laminated on the lower surface side of the deck plate. It is provided on the floor surface of the first floor of the above building and not provided on the floor surfaces of the second floor and above The heat insulating material is a thermosetting resin foam.

[0010] The above heat insulating material is laminated on the plating formed on the surface of the above deck plate.

[0011] Further, the present invention is It is an apartment house A method for constructing a heat insulating structure in a floor slab of a building, the floor slab being formed of a deck plate laid on a beam and having concrete laminated on the upper surface side, and a heat insulating material laminated on the lower surface side of the deck plate. It is provided on the floor surface of the first floor of the above building and not provided on the floor surfaces of the second floor and above Spray a heat insulating material, which is a thermosetting resin foam, on the lower surface side of the above deck plate. Before the above heat insulating material is completely dried or cured Lay the deck plate with the heat insulating material sprayed on the lower surface side on the above beam.

[0012] Also, after laying the above deck plate on the above beam by the above construction method, the above heat insulating material is additionally attached to the bearing of the above deck plate on the above beam

Advantages of the Invention

[0013] According to the present invention, it is possible to reduce the labor related to the formwork for placing concrete, and avoid the delay in the construction period, the burden of construction management and material management, and the increase in procurement costs.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0015] Hereinafter, with reference to FIGS. 1 to 3, a heat insulation structure (hereinafter also referred to as "this heat insulation structure") and a construction method of the heat insulation structure (hereinafter also referred to as "this construction method") in an embodiment of the present invention will be described. In these figures, for the same parts existing in plural, there are also parts numbered only for one part. For convenience of explanation, there are also parts where a predetermined part and the lead-out line of this part are indicated by a hidden line (broken line). In the description, terms indicating directions such as up, down, vertical, and horizontal are basically based on the floor slab of the building.

[0016] <Overview of this heat insulation structure> As shown in FIG. 1, this heat insulation structure is adopted, for example, for the floor slab S that forms the floor surface of each living room in an apartment house. The floor slab S is a concrete slab cast on a beam B provided on a column or a beam B and a formwork supported by a shoring F. The beam B may include a main beam supported by a column and a secondary beam supported by the main beam. The main beam may be an underground beam. The secondary beam may be a simple beam with respect to the main beam or a continuous beam by a shoring F, and may have a span suitable for each. The material and dimensions of the beam B may be appropriately determined according to the design of the apartment house based on known techniques. The height of the shoring F is about 500 mm to 1500 mm and is not limited.

[0017] The concrete C may be placed with single reinforcement or double reinforcement, and the formwork may or may not be removed after curing. The components and dimensions of the concrete C may be appropriately determined according to the design of the apartment house based on known techniques.

[0018] The floor slab S of this heat insulation structure is a composite slab including a deck plate 1, and includes a deck plate 1 laid on the beam B and having concrete C laminated on the upper surface side, and a heat insulating material 2 laminated on the lower surface side of the deck plate 1. The heat insulating material 2 is a thermosetting resin foam.

[0019] According to this configuration, the heat insulation structure can be easily formed without affecting the specifications, functions, and construction of the floor slab S. That is, the heat insulating material 2 can be formed. Located on the lower surface side of the deck plate 1Therefore, it does not affect the placement of the concrete C. Also, since it is a thermosetting resin foam, it is lightweight and easily plastically deformed before curing, and does not affect the laying of the deck plate 1 on the beam B. Thus, it is easy to insulate the floor slab S.

[0020] Also, the heat insulating material 2 is laminated on the plating formed on the surface of the deck plate 1.

[0021] According to this configuration, since the plating makes the surface of the deck plate 1 rust-resistant, an effect that the heat insulating material 2 is difficult to peel off from the deck plate 1 can be expected. That is, since the peeling of the heat insulating material 2 can be prevented by the plating, the maintenance load of the heat insulating material 2 can be reduced.

[0022] Also, the floor slab S is the floor surface of the first floor of an apartment house. In other words, the floor slab S is not provided on the floor surfaces of the second floor and above of the apartment house.

[0023] According to this configuration, the heat insulating material 2 can block cold air and hot air from the ground to the floor surface of the first floor of the apartment house, and since the heat insulating material 2 is not formed on the floor surfaces of the second floor and above that are less affected by the temperature change of the ground than the first floor surface, the labor of construction and the procurement cost of materials can be reduced.

[0024] <Details of the Deck Plate> The shape of the deck plate 1 is corrugated in an end face view, and has a top surface portion not numbered, a bottom surface portion substantially parallel to the top surface portion, and an inclined surface portion connecting the top surface portion and the bottom surface portion. For example, two top surface portions and three bottom surface portions are alternately connected via inclined surface portions to form a single deck plate, but it may be flat or folded in an end face view, and is not limited. The deck plate 1 may be laid adjacent to each other in two or more sheets on the beam B and joined with a deck joint. The deck plate 1 may be adopted as a formwork for the concrete C like a flat deck.

[0025] The dimensions of the deck plate 1 may be, for example, a thickness of about 1 mm to 10 mm, a vertical height such as the distance between the top surface and the bottom surface of about 50 mm to 300 mm, and lengths in the short and long directions of about 500 mm to 8000 mm, without limitation. The material of the deck plate 1 is made of steel, but may be any material having the desired strength and rigidity, without limitation. The weight of the deck plate 1 is about 10 kg to 20 kg per sheet, and may be determined according to the dimensions, material, and presence or absence of plating, without limitation. The plating on the surface of the deck plate 1 is, for example, zinc or a mixture of zinc and an aluminum alloy, but may not contain zinc, and may be about 4 kg / m to 8 kg / m per 1 mm thickness of the deck plate 1.

[0026] <Details of the heat insulation material> The heat insulation material 2 is, for example, a foam obtained by mixing a foaming agent containing polyol or polyisocyanate into a synthetic resin such as polyurethane, polystyrene, or polyethylene. It may be made of a thermoplastic resin or a thermosetting resin, but is preferably made of a thermosetting resin, and more preferably is sprayable. Specifically, it is urethane foam, isocyanurate foam, or phenol foam. The spraying of the heat insulation material 2 may be by jet injection using a high-pressure pump via a hose or by spray injection, but in view of the area per sheet of the deck plate 1, jet injection is preferably used.

[0027] The dimensions of the heat insulation material 2 are about 10 mm to 100 mm in thickness, and may be appropriately determined according to the dimensions of the deck plate 1, the load-bearing capacity of the floor slab S, or the desired heat insulation performance, without limitation. The weight of the heat insulation material 2 is such that the weight of the deck plate 1 increases slightly, without limitation. The heat insulation material 2 may be formed at the construction site of an apartment building or at other locations and at appropriate times. It may be formed at the construction site and before laying the deck plate 1, or may be formed at a timing that is only as far back as the time before the sprayed heat insulation material 2 is completely cured from the scheduled laying time of the deck plate 1.

[0028] <Outline of this construction method> As shown in Fig. 1, this construction method forms the floor slab S with a deck plate 1 on which concrete C is laminated on the upper surface side by laying it on a beam B, and a heat insulating material 2 laminated on the lower surface side of the deck plate 1. The heat insulating material 2, which is a thermosetting resin foam, is sprayed on the lower surface side of the deck plate 1, and the deck plate 1 with the heat insulating material 2 sprayed on the lower surface side is laid on the beam B.

[0029] According to this configuration, since the heat insulating material 2 can be sprayed on the lower surface side of the deck plate 1 before laying the deck plate 1 on the beam B and the deck plate 1 can be laid on the beam B before it is completely dried or cured, the laying process of the deck plate 1 and the placing process of the concrete C are less likely to be delayed even through the spraying process of the heat insulating material 2. Also, since the spraying operation of the heat insulating material 2 and the laying operation of the deck plate 1 are easy, it is easy to manage the construction as it does not require skilled workers.

[0030] <Supplementary Explanation of this Construction Method> In the spraying process of the heat insulating material 2, the heat insulating material 2 may be sprayed on a plurality of deck plates 1 together or on each deck plate 1 one by one. After the spraying process of the heat insulating material 2, the deck plates 1 with the heat insulating material 2 sprayed on them may be carried into the construction site together in a plurality.

[0031] As shown in Figs. 2 and 3, in the bearing length of the deck plate 1 with respect to the beam B, since the heat insulating material 2 may be plastically deformed due to the weight of the concrete C, which may lead to a reduction in the heat insulation effect, for the bearing length or the deck joint fixed to the bearing length to connect adjacent deck plates 1 (not shown), the heat insulating material 2 may be sprayed, injected, or a shaped heat insulating material 2 may be pasted from the lower surface side of the deck plate 1 afterwards.

[0032] Note that the heat insulation structure and the construction method of the heat insulation structure shown in this embodiment are not limited to the above-described content, and include the position, shape, dimensions of any part, the relationship between parts, the relationship between processes, and the operations between processes as long as the same effect can be obtained.

Explanation of Reference Numerals

[0033] 1 Deck plate, 2 Heat insulating material, S Floor slab, C Concrete, B Beam, F Shoring

Claims

A method for constructing a heat insulation structure in a floor slab of a building which is an apartment house, comprising: forming the floor slab with a deck plate laid on a beam and having concrete laminated on the upper surface side thereof, and a heat insulating material laminated on the lower surface side of the deck plate, providing the floor slab on the floor surface of the first floor of the building and not providing it on the floor surfaces of the second floor and above; spraying a heat insulating material which is a thermosetting resin foam on the lower surface side of the deck plate; laying the deck plate on which the heat insulating material has been sprayed on the lower surface side on the beam before the heat insulating material is completely dried or cured; A method for constructing a heat insulation structure. Claim 2 after laying the deck plate on the beam, additionally attaching the heat insulating material to the bearing length of the deck plate with respect to the beam; The method for constructing a heat insulation structure according to Claim 1.

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