Underbed structure

Abstract

The purpose of this is to prevent damage to the partition wall caused by an earthquake compared to when the tip of the partition wall is connected to the floor slab. [Solution] The underfloor structure comprises a floor slab, a concrete floor provided below the floor slab and forming a dry area between it and the floor slab, a plurality of foundation bodies provided in the dry area that support the floor slab from below, and a partition wall provided in the dry area that rises from the concrete floor toward the floor slab and has its tip separated from the floor slab.

Description

[Technical Field]

[0001] The present disclosure relates to an underfloor structure. [Background technology]

[0002] The construction method for a dam described in Patent Document 1 describes a water storage tank in which the spaces defined by the underground beams, base plate, and upper slab of the foundation of a building are used as water storage tanks.The dam is installed to prevent stagnation of stored water, and the water storage tank is constructed by pouring slab concrete, applying an insulating waterproof layer to the surface, and then attaching it to the slab side, underground beam side, or base plate side using a specified connecting and fixing means. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 63-191790 Summary of the Invention [Problem to be solved by the invention]

[0004] A dry area may be formed between the floor slab and the concrete floor below the floor slab. To make effective use of this dry area, a partition wall is installed to separate the dry area.

[0005] This partition wall rises from the concrete floor toward the floor slab, and its tip is connected to the floor slab. However, when the tip of the partition wall is connected to the floor slab, in the event of an earthquake, the displacement of the floor slab caused by the earthquake is transmitted directly to the partition wall, which causes damage to the partition wall.

[0006] The object of the present disclosure is to suppress damage to partition walls caused by earthquakes compared to when the tip of the partition wall is connected to the floor slab. [Means for solving the problem]

[0007] The underfloor structure of the first aspect is characterized by comprising a floor slab, a concrete floor provided below the floor slab and forming a dry area between the floor slab and the concrete floor, a plurality of foundation bodies provided in the dry area and supporting the floor slab from below, and a partition wall provided in the dry area, rising from the concrete floor toward the floor slab and with its tip separated from the floor slab.

[0008] According to the above-mentioned aspect, the tip of the partition wall rising from the concrete floor toward the floor slab is separated from the floor slab. This prevents the displacement of the floor slab caused by an earthquake from being directly transmitted to the partition wall. Therefore, damage to the partition wall due to an earthquake can be suppressed compared to when the tip of the partition wall is connected to the floor slab.

[0009] The underfloor structure of the second aspect is characterized in that, in the underfloor structure described in the first aspect, it is provided with foundation beams that are spanned across a pair of adjacent foundation bodies and support the floor slab, and the partition wall is separated from the foundation beams.

[0010] According to the above aspect, the partition wall is isolated from the foundation beams. This prevents displacement of the foundation beams due to an earthquake from being directly transmitted to the partition wall. Therefore, damage to the partition wall due to an earthquake can be suppressed compared to when the partition wall is connected to the foundation beams.

[0011] The underfloor structure of the third aspect is characterized in that, in the underfloor structure described in the first or second aspect, the partition wall is rectangular tubular in plan view, and water is stored inside the partition wall.

[0012] According to the above aspect, the tip of the partition wall is separated from the floor slab, thereby preventing damage to the water tank due to an earthquake. [Effects of the Invention]

[0013] According to the present disclosure, damage to the partition wall due to an earthquake can be suppressed compared to when the tip of the partition wall is connected to the floor slab. [Brief explanation of the drawings]

[0014] [Figure 1] 2. FIG. 3 is a cross-sectional view of the underfloor structure according to the embodiment of the present disclosure taken along line II in FIG. [Figure 2] FIG. 1 is a plan view showing an underfloor structure according to an embodiment of the present disclosure. [Figure 3] 3 is a cross-sectional view taken along line III-III in FIG. 2, showing an underfloor structure according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0015] An example of an underfloor structure according to an embodiment of the present disclosure will be described with reference to Figures 1 to 3. Note that arrow H shown in each figure is vertical and indicates the up-down direction of the underfloor structure. Arrow W is perpendicular to arrow H and is horizontal and indicates the width direction of the underfloor structure. Arrow D is perpendicular to arrows H and W and is horizontal and indicates the depth direction of the underfloor structure.

[0016] (Underfloor structure 100) As shown in Figure 1, the underfloor structure 100 comprises a floor slab 10, a concrete floor 20 provided below the floor slab 10, a plurality of foundation bodies 30 supporting the floor slab 10, foundation beams 40, and partition walls 50.

[0017] [10m floor slab, 20m concrete floor] The floor slab 10 is made of reinforced concrete, and has a thickness direction extending up and down as shown in Fig. 1. In this embodiment, the floor slab 10 forms the floor of the first floor. As shown in Fig. 2, the floor slab 10 has a rectangular shape when viewed from above.

[0018] As shown in Figure 1, the concrete floor 20 is provided below the floor slab 10, and a dry area 12 is formed between the concrete floor 20 and the floor slab 10. The dry area 12 is a space formed by digging into the ground surface. As shown in Figure 2, the concrete floor 20 has a rectangular shape when viewed from above. Specifically, the outer shape of the concrete floor 20 overlaps with the outer shape of the floor slab 10 when viewed from above.

[0019] 1, an outer peripheral wall 22 rising toward the outer peripheral portion of the floor slab 10 is formed integrally with the concrete floor 20. The space surrounded by this outer peripheral wall 22, the concrete floor 20, and the floor slab 10 is the dry area 12.

[0020] Furthermore, the upper end of the outer peripheral wall 22 and the underside of the floor slab 10 are spaced apart, and an edge cutting material 24 is disposed in this spaced apart area. In other words, the upper end of the outer peripheral wall 22 and the underside of the floor slab 10 are cut off, and the edge cutting material 24 is disposed in this cut off area. Here, the edge cutting material is a member that suppresses the transmission of load, and the edge cutting material 24 is designed to suppress the transmission of load from the floor slab 10 to the outer peripheral wall 22. Note that, for example, Styrofoam (registered trademark) or the like can be used as the edge cutting material 24.

[0021] [Foundation body 30, foundation beam 40] As shown in Fig. 1, the foundation body 30 (so-called footing) is provided in the dry area 12 so as to support the floor slab 10 from below. Specifically, as shown in Fig. 2, the foundation body 30 is disposed at the four corners of the floor slab 10, which is rectangular in plan view.

[0022] As shown in Figure 1, the foundation body 30 comprises a rectangular tubular steel pipe 30a filled with concrete. The upper end portion of a pile 110 is fitted into the lower end portion of the foundation body 30, and the lower end portion of a column 120 is fitted into the part of the foundation body 30 above the pile 110. In this configuration, displacement of the column 120 caused by an earthquake or the like is directly transmitted to the foundation body 30.

[0023] Furthermore, short brackets 30b for attaching foundation beams 40 are attached to the outer periphery of the foundation body 30.

[0024] The foundation beams 40 are formed using H-shaped steel materials, and four of them are provided. As shown in Fig. 2, two of the foundation beams 40 extend in the width direction and are arranged so as to span between a pair of adjacent foundation bodies 30 spaced apart in the width direction. The other two foundation beams 40 extend in the depth direction and are arranged so as to span between a pair of adjacent foundation bodies 30 spaced apart in the depth direction.

[0025] The upper surfaces of the foundation beams 40 contact the floor slab 10, and the headed studs provided on the foundation beams 40 are incorporated into the floor slab 10. In this configuration, the foundation body 30 and the foundation beams 40 are displaced by an earthquake or the like. Furthermore, in accordance with the displacement of the foundation beams 40, the floor slab 10 is also displaced.

[0026] [Partition wall 50] As shown in Figure 3, the partition wall 50 rises from the concrete floor 20 toward the floor slab 10 and is formed integrally with the concrete floor 20. As shown in Figure 2, the partition wall 50 has a rectangular cylindrical shape when viewed from above, and is placed inside a rectangular cylindrical foundation structure 14 formed from a plurality of foundation bodies 30 and a plurality of foundation beams 40.

[0027] The foundation structure 14 and the partition wall 50 are separated horizontally. In other words, the partition wall 50 is separated from the foundation body 30 and the foundation beams 40. Furthermore, water is stored inside the partition wall 50, which is surrounded by the partition wall 50, and the partition wall 50 forms a water tank 52.

[0028] 3, the upper end of the partition wall 50 and the underside of the floor slab 10 are spaced apart, and an edge cutting material 54 is disposed in this spaced apart area. In other words, the upper end of the partition wall 50 and the underside of the floor slab 10 are spaced apart, and the edge cutting material 54 is disposed in this spaced apart area. This edge cutting material 54 also functions as a water-stopping material. Note that, for example, Styrofoam (registered trademark) or the like can be used as the edge cutting material 54.

[0029] Furthermore, on the outside of the partition wall 50 (the side opposite to the side where water is stored), a small beam 42 is provided to support the floor slab 10. The partition wall 50 and the small beam 42 are spaced apart in the width direction, and an edge cutting material 44 is disposed in this spaced apart area. In other words, the partition wall 50 is separated from the small beam 42, and the edge cutting material 44 is disposed in this separated area. Note that the edge cutting materials 44, 54 may be, for example, Styrofoam (registered trademark) or the like.

[0030] (action) Next, the operation of the underfloor structure 100 will be described. When an earthquake occurs, the foundation beams 40 are displaced by the earthquake, etc. Furthermore, the floor slab 10 is displaced in accordance with the displacement of the foundation beams 40. Furthermore, the displacement of the columns 120 due to the earthquake is transmitted from the foundation body 30 to the piles 110.

[0031] Here, the tip of the outer wall 22 rising from the outer periphery of the concrete floor 20 is spaced apart from the underside of the floor slab 10, and an edge cutter 24 is provided at the spaced apart part. This prevents the displacement of the floor slab 10 caused by an earthquake from being transmitted to the outer wall 22.

[0032] Furthermore, the tip of the partition wall 50 rising from the concrete floor 20 toward the floor slab 10 is spaced apart from the underside of the floor slab 10, and an edge cutting material 54 is provided at the spaced apart part. This prevents the transmission of displacement of the floor slab 10 due to an earthquake to the partition wall 50.

[0033] (summary) As explained above, according to the underfloor structure 100, the ends of the partition walls 50 rising from the concrete floor 20 are separated from the floor slab 10. This makes it possible to prevent damage to the outer wall 22 and the partition walls 50 due to an earthquake, compared to when the ends of the partition walls are connected to the floor slab.

[0034] Furthermore, according to the underfloor structure 100, the partition wall 50 is separated from the foundation beams 40. This makes it possible to prevent damage to the partition wall 50 due to an earthquake, compared to when the partition wall is connected to the foundation beams.

[0035] Moreover, according to the underfloor structure 100, water is stored inside the partition walls 50, which are surrounded by the partition walls 50, and the partition walls 50 form a water tank 52. The tip of the partition wall 50 is separated from the floor slab 10, which makes it possible to prevent the water tank 52 from being damaged by an earthquake.

[0036] Furthermore, according to the underfloor structure 100, the partition wall 50 and the joists 42 are spaced apart in the width direction. In other words, the partition wall 50 is separated from the joists 42. This makes it possible to prevent damage to the partition wall 50 due to an earthquake, compared to when the partition wall is connected to the joists.

[0037] Furthermore, according to the underfloor structure 100, the upper end of the partition wall 50 and the underside of the floor slab 10 are separated, and a separating material 54 is disposed in this separated portion. The separating material 54 also functions as a water-stopping material. Therefore, when the water tank 52 is shaken by an earthquake, it is possible to prevent the water stored in the water tank 52 from leaking to the outside from between the upper end of the partition wall 50 and the underside of the floor slab 10.

[0038] Although the present disclosure has been described in detail with respect to a specific embodiment, it will be apparent to those skilled in the art that the present disclosure is not limited to such an embodiment and that various other embodiments are possible within the scope of the present disclosure. For example, in the above embodiment, the water tank 52 is formed by the partition wall 50, but a storage area for storing equipment, etc. may also be formed by the partition wall.

[0039] In the above embodiment, the concrete floor 20 has a rectangular shape when viewed from above, but it may have a shape other than a rectangular shape.

[0040] Furthermore, in the above embodiment, the outer shape of the concrete floor 20 overlaps with the outer shape of the floor slab 10 when viewed from above, but they do not have to overlap.

[0041] In addition, in the above embodiment, the upper end of the outer wall 22 and the underside of the floor slab 10 are spaced apart, and an edge-cutting material 24 is placed in this spaced apart area, but if there is no problem with water entering the dry area 12, a gap may be formed without placing an edge-cutting material. [Explanation of symbols]

[0042] 10 Floor slab 12 Dry Area 20 Concrete floor 30 Foundation body 40 Foundation beam 50 Partition Wall 100 Underfloor structure

Claims

1. Floor slab and A concrete floor is provided below the floor slab, and a dry area is formed between the concrete floor and the floor slab; A plurality of foundation bodies provided in the dry area and supporting the floor slab from below; a partition wall provided in the dry area, rising from the concrete floor toward the floor slab, and having a tip separated from the floor slab; Underfloor structure equipped with:

2. a foundation beam that spans a pair of adjacent foundation bodies and supports the floor slab; The partition wall is separated from the foundation beam. The underfloor structure according to claim 1.

3. The partition wall has a rectangular cylindrical shape in a plan view, Water is stored inside the partition wall. The underfloor structure according to claim 1 or 2.

Images