JP2002038761A - Seismically isolated residence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance on the lower side of a building body in a seismically isolated residence supported under the state in which the residence is floated from a ground surface by a seismically isolated element. SOLUTION: In the seismically isolated residence in which the building body is supported on a foundation (21) through the seismically isolated elements (22), a concrete erecting section (34) is erected from the foundation side (21) along the outer circumference of the building body, and the same appearance as a general residence, in which a building is constructed on a concrete foundation, is obtained by the erection of the concrete erecting section (34).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base-isolated house supported via a base-isolating element, and more particularly to a shielding structure for a gap below a building body.

[0002]

2. Description of the Related Art As means for preventing ground vibrations from being transmitted to a house during a large earthquake, a building body is supported via seismic isolation elements.

As this type of seismic isolation element, there are a sliding bearing that absorbs vibration from the ground by horizontal sliding, a rolling bearing that also absorbs by rolling, and a rubber bearing that absorbs by laminated rubber. In this method, any seismic isolation element is installed on a foundation, a foundation beam of a building body is placed on the seismic isolation element, and a wall, a floor, and the like are further constructed thereon.

[0004] Fig. 4 schematically shows a conventional seismic isolation house of this type. A seismic isolation element (2) is required on a slab foundation (1) formed by casting concrete. Installed in required places. On this seismic isolation element (2), the first floor base beam
Place (3) on this base beam (3), wall (4), floor (5)
Is supported.

[0005] In a house thus supported by seismic isolation, the building body (8) is supported by the seismic isolation element (2) in a state of being suspended from the ground. 8) A large gap (13) will be formed underneath. For this reason, conventionally, as shown in the figure,
The lower end of the draining cover (14) hanging from the outer wall side of (8) is extended to near the ground so as to close the gap (13) in this portion.

[0006]

In a house in which a building body is constructed on a concrete foundation, when viewed from the outside, a rising portion of the foundation concrete can be seen from the ground,
It is common for the building itself to be on top of it. However, in the case of seismically isolated houses,
(8) The drainage cover (14) covers the ground close to the ground, which makes it look different from a conventional house, giving a sense of incongruity. There is a disadvantage that it is easy to give.

Further, it is conceivable to excavate the ground deeply until the base beam (3) is located near the ground and install the seismic isolation element (2) at a low level. In addition, the amount of excavated soil increases, the cost increases, and there is a problem that a problem of disposal of the discharged soil occurs.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a base-isolated house which supports a building body via a base-isolating element on a foundation.
It is characterized by standing up the concrete rising part from the foundation side.

In the above, according to the invention of claim 2 of the present application, the concrete rising portion is provided integrally with the concrete slab foundation.

[0010] Similarly, in the invention of claim 3 of the present application, the gap between the upper end of the concrete rising portion and the lower end of the outer wall of the building body is covered with a cover hanging down from the building body side.

Further, in the invention of claim 4 of the present application,
An upper end surface of the decorative concrete is provided that is lower than a lower surface of a base beam installed on the seismic isolation element.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a support structure of a base-isolated house according to the present invention, wherein (21) is a concrete slab foundation, for example, when the ground is excavated shallowly. It has been put into place after doing the splittering business. This slab foundation (2
A pedestal (20) is installed at the key points in 1), and a seismic isolation element (22) is placed on it. A base beam (23) made of, for example, an H-section steel is placed so as to straddle the seismic isolation element (22), and the base beam (23) is used as a base, and the walls and floor (25) ) Has been built.

FIG. 2 shows the details of the lower end of the outer wall (24) of the building body. (26) is a base beam (23) mounted on the seismic isolation element (22), and a base at an outer peripheral portion joined to a distal end of the base beam (23) via a joining plate (27). It is a beam and is arranged along the building outer wall (24). The base beam (26) at the outer periphery is also made of H-section steel having the same cross section as the base beam (23) on the seismic isolation element (22), on which a frame (28) is installed. An inner wall material (29) is mounted inside the framed frame (28), and an exterior material (30) is mounted outside, thus constituting the outer wall (24).

(31) is a floor panel made of an ALC plate or other concrete plate, and a base beam on the seismic isolation element (22).
It is dropped on the middle part of (23) and is set on a plate (40) attached to a base beam (26), and a floor plate (33) is stretched thereon.

Below the base beam (26) of the outer peripheral portion, a concrete slab is cast integrally with the slab foundation (21) so as to stand up from the outer peripheral end of the slab foundation (21). The foundation rising portion (34) of the building stands up, thereby covering the gap (35) below the base beam (26), which is the lower side of the building body.

A draining cover (36) has a horizontal part (37) at the upper end thereof and an upper surface of a base beam (26) and the shaft frame (28).
The vertical cover body (38) bent from the outer end of the horizontal part (37)
Hanging on the outside of the base beam (26), the outside of the base beam (26) is covered, and the gap between the lower surface of the base beam (26) and the foundation rising portion (34) is closed.

The lower end of the drainage cover (35) is bent inward at a substantially right angle. , Is located slightly above the base rising portion (34).

In the above, the basic rising portion (34)
It protrudes above the outer ground surface (39), and as shown in Fig. 3, the concrete surface is exposed below the building body, as in a general house, and thus is directly supported by the concrete foundation. It has the appearance as if it had been done.

[0019]

As described above, according to the present invention, even when the building main body is supported by being raised from the ground surface due to the presence of the seismic isolation element, the concrete rising portion is provided below the building main body from the ground. Since it protrudes and covers the gap underneath, it has the same appearance as a general house supported by the rising part of the concrete foundation, does not give a stranger to the viewer, and has excellent appearance A seismically structured house is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a base-isolated house showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a lower end portion of the outer wall in a longitudinal direction.

FIG. 3 is an external view of a base-isolated house according to the present invention.

FIG. 4 is a schematic sectional view showing a conventional support structure for a base-isolated house.

[Explanation of symbols]

 (21) Slab foundation (22) Seismic isolation element (23) (26) Foundation beam (34) Rise of foundation concrete

Claims (4)

[Claims] Claims: 1. A seismic isolation house supporting a building body on a foundation via a seismic isolation element, wherein a concrete rising portion is raised from the foundation side along the outer periphery of the building body. Housing. 2. The seismic isolation house according to claim 1, wherein the concrete rising portion is cast integrally with the concrete slab foundation. 3. The seismically isolated house according to claim 1, wherein a gap between an upper end of the concrete rising portion and a lower end of the outer wall of the building body is covered by a cover hanging down from the building body side. 4. The base-isolated house according to claim 1, wherein an upper end surface of the decorative concrete is lower than a lower surface of a base beam installed on the base-isolation element.