Seismic isolation building

Abstract

To provide a seismic isolation building that can prevent water from entering the lower structure.SOLUTION: A seismic isolation building 10 includes a ceiling slab 12D that is provided on a lower structure 12 and prevents water from entering the lower structure 12 from above, a seismic isolation device 20 that is arranged above the ceiling slab 12D, an upper structure 14 that is supported by a seismic isolation device 20, and a flood wall 30 that rises from the ceiling slab 12D and surrounds a predetermined area of a seismic isolation layer 16 in which the seismic isolation device 20 is arranged.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a seismically isolated building. [Background technology]

[0002] The following Patent Document 1 describes a seismically isolated building in which a seismic isolation mechanism is surrounded by a water cutoff wall to prevent water from entering the seismic isolation mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-150598 Summary of the Invention [Problem to be solved by the invention]

[0004] The seismic isolation mechanism shown in Patent Document 1 is placed on the foundation, but there are also buildings in which the seismic isolation device is placed between the lower structure and the upper structure. In such buildings, it is necessary to prevent water from entering the lower structure.

[0005] In consideration of the above, the present invention aims to provide a seismically isolated building that can prevent water from entering the lower structure. [Means for solving the problem]

[0006] The seismically isolated building of claim 1 comprises a ceiling slab provided on a lower structure to prevent water from entering the lower structure from above, a seismic isolation device disposed above the ceiling slab, an upper structure supported by the seismic isolation device, and a flood wall rising from the ceiling slab and surrounding a predetermined range of the seismic isolation layer in which the seismic isolation device is disposed.

[0007] In the base-isolated building of claim 1, the ceiling slab prevents water from seeping into the substructure from above. The flood barrier also prevents water from seeping into a specified area of ​​the base-isolated layer.

[0008] A base-isolated building according to a second aspect of the present invention is the base-isolated building according to the first aspect, wherein the predetermined area is an opening formed in the ceiling slab.

[0009] In the base-isolated building of claim 2, an opening is formed in the ceiling slab of the substructure, but this opening is surrounded by a flood wall, which also prevents water from entering the substructure from above through the opening.

[0010] A base-isolated building according to a third aspect of the present invention is the base-isolated building according to the second aspect, wherein an elevator is inserted through the opening.

[0011] In the seismically isolated building of claim 3, the opening through which the elevator passes is surrounded by a flood wall, which prevents water from flooding the basement floors from above through the elevator shaft.

[0012] The seismically isolated building of claim 4 is the seismically isolated building of claim 2, wherein the lower structure forms a basement floor, the upper structure forms a ground floor, and the upper end of the flood wall is positioned at a height of one floor or higher of the upper structure.

[0013] In the base-isolated building of claim 4, the base isolation device is installed between the lower structure that forms the basement floor and the upper structure that forms the ground floor. Therefore, compared to when the upper structure is formed including the basement floor, the basement floor is more effectively prevented from flooding.

[0014] Furthermore, in a seismically isolated building with a basement floor, if the seismic isolation device is placed on the basement foundation, for example, seismic isolation slits must be constructed around the building to absorb the building's shaking, and the basement floor is prone to flooding through these seismic isolation slits.

[0015] The upper end of the flood wall is located at a height of at least one floor of the superstructure that forms the ground floor, which means that even if the water level rises to the height of the first floor, flooding into the basement floor can be prevented. [Effects of the Invention]

[0016] According to the present invention, it is possible to prevent water from entering the lower structure. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a partial cross-sectional view showing an example of a seismically isolated building according to an embodiment of the present invention. [Figure 2] 1 is a plan view partially showing a seismic isolation layer of a seismic isolated building according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] A base-isolated building according to an embodiment of the present invention will be described below with reference to the drawings. Components indicated by the same reference numerals in the various drawings are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers.

[0019] Furthermore, descriptions of overlapping configurations and symbols in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment with various modified examples, within the scope of the purpose of the present disclosure.

[0020] <Seismic isolation building> (Building composition) As shown in Figure 1, the seismically isolated building 10 according to an embodiment of the present invention is a building comprising a lower structure 12 and an upper structure 14, and comprising a seismically isolated layer 16 between the lower structure 12 and the first floor 14A of the upper structure 14.

[0021] The substructure 12 forms the basement floor 12A of the base-isolated building 10, and is constructed on a foundation slab 18A. A retaining wall 18B is constructed around the periphery of the foundation slab 18A. The retaining wall 18B is a wall placed in contact with the ground G. The foundation slab 18A may also include foundation beams (not shown).

[0022] In FIG. 1, the lower structure 12 is shown as having only one basement floor as the basement floor 12A, but the lower structure 12 may be configured to have multiple floors as the basement floor 12A.

[0023] The substructure 12 is a column-beam frame structure with columns 12B and beams 12C, and a slab 12D is spanned across the beams 12C. The ends of the slab 12D are joined to the retaining wall 18B, which prevents water from flooding into the substructure from above, for example, during a flood.

[0024] The seismic isolation device 20 is disposed above the slab 12D of the substructure 12. The seismic isolation device 20 is also disposed at the top of the column 12B. Furthermore, the seismic isolation device 20 supports the superstructure 14. The superstructure 14 forms the ground floor of the seismic isolated building 10.

[0025] In this way, the seismically isolated building 10 is a building with an intermediate-layer seismic isolation structure between the basement and first floors, and a capital seismic isolation structure, in which a seismic isolation layer 16 is formed between the lower structure 12 and the upper structure 14.

[0026] (Tide wall) The seismic isolation layer 16 is provided with a flood wall 30 that rises vertically from slab 12D, which is the ceiling slab of the substructure 12, and surrounds a predetermined area of ​​the seismic isolation layer 16. Specifically, the "predetermined area" is opening V formed in slab 12D. In other words, flood wall 30 is disposed to surround the opening formed in slab 12D.

[0027] The upper end of the flood wall 30 is located at a height equal to or higher than the first floor 14A of the superstructure 14. "A height equal to or higher than the first floor 14A" includes the height between the upper and lower slabs of the first floor (slabs 14B and 14C).

[0028] As shown in Figure 2, a stairwell 32 is arranged inside the flood wall 30 (in other words, opening V), and an elevator shaft 34 passes through it. The stairwell 32 and elevator shaft 34 are arranged between the lower structure 12 and the upper structure 14, forming a vertical traffic line that allows movement between the lower structure 12 and the upper structure 14. For this reason, opening V is connected to the basement floor 12A.

[0029] An equipment and machinery room (not shown) is located on basement floor 12A, which is connected to opening V. Equipment and machinery important for the operation of the seismically isolated building 10 are concentrated in the machinery room. Pipe spaces and duct spaces for laying electrical wiring and various piping from this equipment and machinery room to each floor of the seismically isolated building 10 are located through opening V. In other words, the various vertical holes located in the seismically isolated building 10 are surrounded by flood wall 30.

[0030] If necessary, opening 30A is formed in flood wall 30. Opening 30A is an opening for passage between the outside of flood wall 30 and stairwell 32 and the elevator in elevator shaft 34. This opening is provided with a door that can be closed normally or in the event of a flood.

[0031] <Action and effect> In the base-isolated building 10 according to the embodiment of the present invention, the slab 12D prevents water from seeping into the substructure 12 from above. In addition, a flood wall 30 rises from the slab 12D of the substructure 12. This flood wall 30 surrounds an opening V formed in the slab 12D in the base isolation layer 16. This also prevents water from seeping into the substructure 12 from above through the opening V.

[0032] Furthermore, in the base-isolated building 10, an elevator shaft 34 is inserted through the opening V. In other words, the opening V through which the elevator shaft 34 is inserted is surrounded by a flood wall, which makes it possible to prevent water from entering the lower structure 12 through the elevator shaft 34.

[0033] Furthermore, in the base-isolated building 10 according to the embodiment of the present invention, the base isolation device 20 is installed between the lower structure 12 that forms the basement floor and the upper structure 14 that forms the above-ground floor. Therefore, compared to when the upper structure is formed to include the basement floor, the effect of suppressing flooding in the basement floor is higher.

[0034] Furthermore, in a seismically isolated building with a basement floor, if the seismic isolation device is placed on the basement foundation, for example, seismic isolation slits must be constructed around the building to absorb the building's shaking, and the basement floor is prone to flooding through these seismic isolation slits.

[0035] Furthermore, the upper end of the flood wall 30 of the present invention is disposed at a height equal to or higher than the first floor of the superstructure 14, which forms the ground floor. This makes it possible to prevent flooding into the basement floor, even if the water level rises to the height of the first floor, as shown by the dashed line H in Figure 1, for example.

[0036] <Other embodiments> In the above embodiment, the flood wall 30 is arranged to surround the opening V formed in the slab 12D, but the embodiment of the present invention is not limited to this. For example, the flood wall 30 may be arranged to partially surround the seismic isolation layer 16. Specifically, the flood wall 30 may be arranged to surround the seismic isolation device 20. This makes it possible to prevent the seismic isolation device 20 from being submerged.

[0037] Furthermore, even when a flood wall 30 is placed around an opening V formed in the slab 12D, the flood wall 30 does not have to be placed around the stairwell 32 and elevator shaft 34, but may be placed around, for example, a pipe space, a duct space, etc.

[0038] Furthermore, in the above embodiment, the lower structure 12 forms only the basement floor, and the upper structure 14 forms only the ground floor, but the embodiment of the present invention is not limited to this. For example, the lower structure 12 may include the ground floor, and the upper structure 14 may include the basement floor. In other words, the present invention is applicable to a building with mid-story seismic isolation as long as it can prevent flooding of the floors belonging to the lower structure and the basement floor. As such, the present invention can be implemented in various forms. [Explanation of symbols]

[0039] 10 Earthquake-resistant building 12 Undercarriage 12A Basement floor 12D Slab (ceiling slab) 14 Superstructure 14A 1st floor (ground floor) 20 Seismic isolation device 30 Seawall 34 Elevator Shaft (Elevator) V opening

Claims

1. a ceiling slab provided in the lower structure to prevent water from entering the lower structure from above; A seismic isolation device disposed above the ceiling slab; an upper structure supported by the seismic isolation device; a seawall that rises from the ceiling slab and surrounds a predetermined area of ​​the seismic isolation layer in which the seismic isolation device is arranged; A seismically isolated building.

2. The predetermined range is an opening formed in the ceiling slab. The seismically isolated building according to claim 1.

3. An elevator passes through the opening. The seismically isolated building according to claim 2.

4. the substructure forms a basement floor; the superstructure forms a ground floor; The upper end of the flood wall is located at a height equal to or higher than the first floor of the superstructure. The seismically isolated building according to claim 2.

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