JP2007063757A - Base isolation housing with underfloor air-tight structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base isolation housing with an underfloor air-tight structure, enabling a base isolation housing to adopt an underfloor air-tight structure. <P>SOLUTION: An earthquake-proof device is utilized to adopt the following means for the base isolation housing in which a gap is formed between a foundation and a base isolation sill: firstly, an air-tight material installation site is provided in the gap between the foundation and the base isolation sill, and secondly, an elastic air-tight material is provided at the air-tight material installation site for vertically energizing the foundation and the base isolation sill to keep air tight. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seismic isolation house having an underfloor airtight structure that secures an underfloor airtight structure in a seismic isolation house in which a gap is formed between a foundation and a base isolation base.

  Traditionally, buildings have been fixed to the foundation, but in recent years the building has become seismically isolated, and buildings that are not affected by earthquake vibrations have started to spread. On the other hand, energy conservation of buildings has progressed, and the number of buildings that do not have ventilation openings under the building floor has increased. In a conventional building, an underfloor airtight house could be easily constructed by not providing this ventilation port.

  As shown in Patent Document 1, the base-isolated house is a house in which a laminated rubber-based (using sliding) or bearing-based (using rolling) seismic isolation device is placed between the foundation and the base. Laminated rubber-based seismic isolation devices use the deformation of materials to reduce the effects of seismic transverse waves, and bearing-based seismic isolation devices use the rolling movement of balls to reduce the effects of seismic shear waves. It was to reduce. However, each of the seismic isolation devices has a space 3 between the foundation 1 and the seismic isolation base 2 as shown in FIG. 3 in order to weaken the transmission of the seismic vibration.

  On the other hand, the number of houses with an underfloor airtight structure has increased in order to enhance the air conditioning effect. However, since the base-isolated house has a gap 10 between the base 1 and the base-isolated base 2, an airtight structure could not be taken. Therefore, the seismic isolation house has a problem that the underfloor airtight structure cannot be taken, and if the underfloor airtight structure is adopted, it cannot be a seismic isolation house.

Japanese Patent Laid-Open No. 2000-120882

  The present invention solves the above problems, and provides an underfloor airtight structure that can adopt an underfloor airtight structure even in a seismically isolated house and can be adapted to the movement of a seismically isolated base due to an earthquake. The purpose is to do.

In order to solve the above-described problems, the first invention employs the following means in a seismic isolation house in which a gap is formed between the foundation and the seismic isolation base by using a seismic isolation device.
First, an airtight material installation place is provided in the gap between the foundation and the base.
Secondly, an elastic airtight material is provided at the airtight material installation location by urging it vertically so as to maintain airtightness with respect to the foundation and the seismic isolation base.
A first invention is a seismic isolation house having an underfloor airtight structure characterized by comprising the above-described means.

  A second invention is a seismic isolated house having an underfloor hermetic structure in which an airtight material installation place is added to the outer wall side of the gap between the foundation and the seismic isolation base in the first invention. Furthermore, the third invention is a seismic isolation house with an underfloor airtight structure to which a configuration of a concave groove formed on the outer wall side of the gap between the foundation and the seismic isolation base is added.

  The first invention provides an airtight material installation place in the gap between the foundation and the base isolation base, and the elastic airtight material is installed in the vertical direction so that the airtight material can be kept airtight with respect to the base and the base isolation base. Because it is provided with energization, even in base-isolated houses, an underfloor airtight structure can be maintained, and even if the base is moved due to an earthquake, the foundation is supported by the elasticity of the airtight material and the vertical bias after the earthquake. The gap between the bases was isolated and the underfloor airtight structure could continue.

  In the second invention, since the airtight material installation place is provided on the outer wall side through the gap between the foundation and the seismic isolation base, the inundation due to rain or the like can be prevented. Furthermore, in the third aspect of the invention, since the airtight material installation place is a concave groove formed on the outer wall side of the foundation and the seismic isolation base, the installation position of the airtight material is moved by the earthquake vibration and the airtight structure is destroyed. It became possible to prevent.

  Hereinafter, embodiments of the present invention will be described together with examples according to the drawings. In the present invention, the building part of the base-isolated house is not shown, and the base-isolated base 2 is located above the foundation 1 made of concrete rising from the ground, and the building is located on the base-isolated base 2. .

  A plurality of seismic isolation devices 3 are fixedly installed on the foundation 1 according to the scale of the building as shown in FIG. The seismic isolation device 3 in this embodiment is a seismic isolation device 3 that uses a bearing ball 4 and a ball tray 5, and a seismic isolation base 2 is installed on the seismic isolation device 3.

  The seismic isolation device 3 moves the seismic isolation base 2 up and down with a height difference of about 6 mm when the base isolation base 2 moves to the left and right due to the rolling of the earthquake. Of course, this height difference is standard, and its range varies depending on the individual seismic isolation device 3.

  On the outer wall side in the gap 10 between the foundation 1 and the seismic isolation base 2, an airtight material installation place 6 formed by cutting the foundation 1 on the upper surface of the foundation 1 is provided. An airtight material mounting base 7 made of a material such as wood or the like is provided at the cutout portion, although it may be simply cutout.

  Further, an airtight material pressing tool 8 made of a metal such as an aluminum plate is provided outside the airtight material mounting base 7 by screws 9 or nails, and the airtight material installation place 6 is formed as a concave groove. The airtight material presser 8 in the embodiment uses an aluminum flat bar, but may be made of other materials such as a stainless steel plate. By providing the airtight material presser 8 in this way, the airtight material installation place 6 is formed into a concave groove shape, and even when the base isolation base 2 moves due to an earthquake, the airtight material 11 can be prevented from shifting.

  An airtight material 11 is disposed on the airtight material mounting base 7. In order to prevent the airtight material 11 from coming off, it is adhered to the airtight material mounting base 7 with an adhesive or the like. The airtight material 11 is made of an elastic material that can respond to flexible movement. Specifically, rubber or silicon is used. The airtight material 11 is arranged to be urged in the vertical direction so as to maintain airtightness with respect to the foundation 1 and the seismic isolation base 2 due to the characteristics of the material and other means.

  As shown in FIG. 2, the seismic isolation base 2 is usually at the lowest position by the seismic isolation device 3, and rises 6 millimeters in the state of maximum movement. However, the airtight material 11 does not need to maintain an airtight state at the time of maximum increase. After the earthquake, when the seismic isolation base 2 returns to the original position, the airtight material 11 may be pressed and the underfloor airtight state may be maintained. Therefore, in the embodiment, the airtight member 11 in a normal state is installed in a state where it is crushed by about 2 to 3 millimeters within a recoverable range.

  The shape of the airtight material 11 may be a shape for maintaining airtightness. In the embodiment of FIGS. 1 and 2, the cross section is circular, and the length is long enough to airtight the entire gap between the foundation 1 and the seismic isolation base 2. However, as shown in FIG. 4, the long airtight material 11 having a triangular cross section (FIG. 4A), the long airtight material 11 having an inverted triangular cross section (FIG. 4B), and the long airtight material 11 having a cross sectional shape (FIG. 4C). ), A bellows type long airtight material (FIG. 4D), a long airtight material 11 having an S-shaped cross section (FIG. 4E), a composite airtight material 11 having a circular cross section and an inverted triangular cross section (FIG. 4F), A combined airtight material (FIG. 4G) having a square cross section and an oval cross section is also conceivable.

The explanatory perspective view which shows one Example of the relationship between the foundation of this invention and a seismic isolation base Cross-sectional explanatory drawing Cross-sectional illustration showing the relationship between conventional foundations and bases FIGS. 4A and 4B are diagrams showing another embodiment of an airtight material, where FIG. 6A is an airtight material having a triangular cross section, FIG. 5B is an airtight material having an inverted triangular cross section, FIG. (E) is an airtight material having an S-shaped cross section, (F) is a composite airtight material having a circular cross section and an inverted triangular cross section, and (G) is a composite airtight material having a square cross section and an oval cross section. It is.

Explanation of symbols

1. . . . . . Basics 2. . . . . . 2. Seismic isolation base . . . . . 3. Seismic isolation device . . . . . 4. Bearing ball . . . . . Ball tray 6. . . . . . 6. Airtight material installation place . . . . . Airtight material mounting base 8. . . . . . Airtight material holder 9. . . . . . Screw 10. . . . . Gap 11. . . . . Airtight material

Claims (3)

  In a base-isolated house where there is a gap between the foundation and the base isolated by using a base isolation device, an airtight material installation place is provided in the gap between the foundation and the base isolation base, and the airtight material is elastic at the place where the airtight material is installed. A seismically isolated house with an underfloor airtight structure, which is erected vertically so as to maintain airtightness with respect to the foundation and seismic isolation base.   The seismic isolation house with an underfloor hermetic structure according to claim 1, wherein the airtight material installation place is provided on the outer wall side of the gap between the foundation and the seismic isolation base.   The seismic isolation house with an underfloor hermetic structure according to claim 1, wherein the airtight material installation place is a concave groove formed on the outer wall side of the gap between the foundation and the base isolation base.

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