JP2001262864A - Base isolated building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolated building capable of preventing a cover from being damaged when base isolation is working and surely covering between both up and down structures equipped with base isolation devices. SOLUTION: The cover 7 for covering a space between a footing 1 and the upper structure 2 from the outside of a building is pivoted on the side of the upper structure 2, the cover 7 is forced by the side of the footing 1 when base isolation is working, and it is pivoted outward. A return preventing device for preventing and suppressing the cover 7 pivoted and forced outward by the side of the lower structure from getting back to the initial position is included.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a base-isolated building.

[0002]

[Related Technology and Problems] As shown in FIG. 3A, a seismic isolation device 53 may be provided between a foundation 51 and a superstructure 52 in order to reduce the influence of an earthquake on a building. Yes,
In such a case, for example, in a detached house or an apartment, as shown in the figure, for the purpose of preventing the space between the foundation 51 and the upper structure 52 from being exposed to the outside, or with the foundation 51 and the upper structure 52 A cover 54 is provided for concealing the space between the foundation 51 and the superstructure 52 for the purpose of closing the rain or for another purpose.

[0003] As a structure of the cover 54, FIG.
As shown in FIG. 5, the upper cover member 55 is fixedly attached to the upper structure 52 using upper and lower cover members 55 and 56, and the lower cover member 56 is fixedly attached to the foundation 51 side. It is conceivable to adopt a structure in which the lower edge of the upper cover material 55 is overlapped with the upper edge of the lower cover material 56 from outside the building.

However, in this structure, if the base 51 and the upper structure 52 are horizontally displaced relative to each other by seismic isolation, the upper and lower cover members 55 and 56 collide with each other, and the cover members 55 , 56 may be damaged.

Therefore, as shown in FIG. 3 (b), a slight space is provided between the upper and lower cover members 55 and 56 in the vertical direction so that the foundation 51 and the upper structure portion 52 are relatively positioned horizontally in the event of an earthquake. It is conceivable to adopt a structure that does not interfere with each other even if displacement occurs.

However, in that case, the space between the foundation 51 and the upper structure 52 is not firmly covered. Therefore, for example, when the main purpose is to finish the rain, the space between the upper and lower cover members 55, 56 is required. Through the upper and lower cover materials 5
In order to keep the gap between the members 5 and 56 as small as possible, it is necessary to attach the cover members 55 and 56 with a high degree of accuracy.

The present invention has been made in consideration of the above-described conventional problems, and can prevent the cover from being damaged during seismic isolation. In addition, the present invention can firmly connect the upper and lower structural parts provided with the seismic isolation device. It is an object to provide a seismic isolation building having a structure that can be covered.

[0008]

An object of the present invention is to provide a base-isolated building in which a seismic isolation device is interposed between a lower structure and an upper structure. An isolating cover is pivotally mounted on the side of the upper structure, and the cover is pushed and moved outward by the side of the lower structure during seismic isolation. Settled by quake building.

In this seismic isolation building, the cover is pushed and moved outward by the side of the lower structure during the seismic isolation, so that the cover is prevented from being damaged during the seismic isolation. Can come off. In addition, the cover is pushed outward by the lower structure side during the seismic isolation, and is overlapped with the lower structure side. Can be firmly covered. When the main purpose is to finish the rain, it is possible to realize a cover structure excellent in the finish of the rain. Also, the mounting of the cover does not require very high precision.

In the above-described seismic isolation building, when the lower structure side is provided with a return preventing means for preventing or suppressing the cover which has been pushed outward and turned to return, the base is isolated. This can prevent the cover from flapping at the time. Therefore, the flapping sound can be reduced or eliminated, and the cover can be prevented from being damaged by the flapping.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

The seismic isolation building shown in FIG. 1A is a building such as a detached house or an apartment, 1 is a foundation as a lower structure, 2 is an upper structure, and a foundation 1 and an upper structure 2 The seismic isolation device 3 is interposed between them. The seismic isolation device 3 is a rolling seismic isolation bearing type seismic isolation device that receives a sphere 4 made of a steel ball or the like with the upper and lower receivers 5 and 6, but may be a seismic isolation device using laminated rubber. Other seismic isolation devices may be used. 7 is an upper cover material as a cover in the present invention, and 8 is a lower cover material. The upper and lower cover members 7 and 8 cover the space between the foundation 1 and the upper structure 2 from the outside. The foundation 1 is made of, for example, a concrete foundation. In the upper structure 2, reference numeral 9 denotes a beam of a building frame, 10 denotes a floor panel, 11 denotes an outer wall panel, and 12 denotes a blind for hiding the beam 9.

The upper and lower cover members 7 and 8 are made of metal, resin, or the like, and the upper edge of the upper cover member 7 pivots toward the upper structure 2, for example, the lower flange of the beam 9. The lower cover member 8 is pivotably attached to the base 1 and can be attached in a hanging state.
And the lower edge of the upper cover member 7 is overlapped with the upper edge of the lower cover member 8 from the outside of the building. ing. A cushioning member 13 made of rubber or the like is attached to the outer surface of the upper edge of the lower cover member 8 so that the upper and lower cover members 7 and 8 do not directly come into contact with each other.

In the seismic isolation building of this embodiment, after the upper cover member 7 pivotally attached and pivoted outwardly, the upper cover member 7 pivots in a direction to return by its own weight. Return prevention means are provided to prevent it from occurring. This return prevention means can be realized by, for example, setting a large rotational frictional resistance of the upper cover member 7 at the pivot portion.

In the above seismic isolation building, an earthquake occurs and the side of the foundation 1 moves in the horizontal direction together with the ground, and the side of the foundation 1 is displaced outward from the upper structure 2 as shown in FIG. At this time, the upper cover member 7 is pushed and moved by the lower cover member 8 attached to the side of the lower structure portion 1, that is, the side of the foundation 1, and rotates outward. This prevents the upper cover member 7 from being damaged during an earthquake.

Then, as shown in FIGS. 2A and 2B,
The side of the foundation 1 is moving inward of the upper structure 2,
Even after the upper cover material 7 becomes free, the upper cover material 7
Does not try to return like a pendulum by its own weight by the above-mentioned return prevention means, and keeps the state open outward. Therefore, after the side of the foundation 1 moves inward of the upper structure part 2, it moves outward again, and when the distance moved outward is the same as or shorter than the previous time, the foundation 1 Side does not hit the upper cover material 7, and even when the distance moved outward is larger than the last time, the lower cover 8 of the foundation 1 lightly hits the upper cover material 7, Only by pushing the material 7 outward, it is possible to prevent the upper cover material 7 from flapping during the seismic isolation operation, and to reduce or eliminate the fluttering sound, and also to prevent the upper and lower covers from flapping. Materials 7 and 8 can be prevented from being damaged.

In the above seismic isolation building, at the time of inspection, etc.,
By simply rotating the cover 7, the space between the upper structure 2 and the foundation 1 can be opened to the outside, the seismic isolation bearing can be easily accessed, and work such as inspection can be performed with good workability. . In this case, the cover 7 can be easily rotated by dividing the cover 7 in a predetermined length unit, for example, about 1 m in the direction in which the foundation 1 extends.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit of the invention. For example, in the above embodiment, the return prevention means functions to prevent the return of the upper cover material 7, but the return prevention means controls the return so that the upper cover material 7 returns at a low speed. May be configured to function in a manner that suppresses In this case, flapping of the upper cover material 7 during an earthquake can be suppressed, and the upper cover material 7 remains open after the earthquake because it moves back to its original position after the earthquake. Can be prevented. Also,
In the above embodiment, the example in which the return preventing means is provided is shown. However, the upper cover material may be pivotally attached so as to freely rotate, or may be attached in the return direction by a biasing means such as a spring. You may make it go. In the latter case, it is possible to more reliably prevent the upper cover member 7 from being left open after the earthquake. Further, in the above-described embodiment, the case where the lower cover material 8 is provided in addition to the upper cover material 7 is shown. However, the cover may be covered only with the upper cover material and the lower cover material may be omitted. Good. Also, the present invention
It goes without saying that it may be used for various buildings other than detached houses and apartments. The lower structure is not limited to the foundation, but may be any structure provided below the upper structure to be seismically isolated. The lower floor portion is a lower structure portion, and the upper floor portion is an upper structure portion.

[0019]

As described above, the present invention is as described above, so that it is possible to prevent the cover from being damaged at the time of seismic isolation operation, and furthermore, the upper and lower parts where the seismic isolation device is provided are provided. It is possible to firmly cover between the structural parts.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a cover attachment portion in a seismic isolation building according to an embodiment, and FIG. 1B is a cross-sectional view showing a state where a cover is pushed outward and rotated during seismic isolation. is there.

FIGS. 2 (a) and 2 (b) are cross-sectional views sequentially showing states when a lower structure portion moves in a direction opposite to the above.

FIGS. 3 (a) and 3 (b) are cross-sectional views showing a related technique of a structure of a cover attaching portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Foundation (lower structure part) 2 ... Upper structure part 3 ... Seismic isolation device 7 ... Upper cover material (cover)

Claims (2)

[Claims] 1. A seismic isolation building having a seismic isolation device interposed between a lower structure and an upper structure, wherein a cover for hiding the space between the lower structure and the upper structure from outside the building is provided on the upper structure. A base-isolated building pivotally mounted on a side, wherein the cover is pushed and moved outward by the side of the lower structure part during the seismic isolation. 2. The seismic isolation building according to claim 1, further comprising return prevention means for preventing or suppressing the cover which has been pushed outward by the lower structural portion and turned so as to return.