JP3204057B2 - Seismic control and seismic isolation structure of structures with large tower ratio - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control and seismic isolation structure for a structure having a large tower ratio.

[0002]

2. Description of the Related Art A wall-type concrete structure capable of bearing a large amount of horizontal force due to an earthquake is applied to a case where bending deformation does not occur so much in the axial direction of a building and shear deformation is predominant. ing. However, when the height H of the wall shape is higher than the width L, the wall behaves like a cantilever supported by the ground itself and the bending deformation becomes more prominent. On the other hand, Japanese Patent Application Laid-Open
No. 918 and Japanese Patent Application Laid-Open No. 7-26786 disclose countermeasures.

[0003] In contrast to the above-mentioned reference, the present invention provides a seismic isolation structure equipped with seismic isolation rubber or the like in a tower-like ratio H / L.
This is a countermeasure for cases where the pull-out force on the tension side due to the overturning moment during an earthquake is greater than 2.5 and the seismic isolation structure cannot be established.

[0004] Therefore, in order to establish a seismic isolation structure, a seismic control frame suitable for reducing the overturning moment is provided to provide a structure of a structure having a seismic isolation structure with a reduced pull-out force and a seismic isolation function. The task is to

[0005]

SUMMARY OF THE INVENTION A seismic control / isolation structure for a structure having a tower-like ratio, that is, a ratio H / L of the height H to the width L of the main structure larger than 2.5, wherein the top of the main structure From the top beam, and a column is continuously erected on the main structure and the seismic isolation layer toward the tip of the top beam, and the top beam is separated from the top beam at the top of the column. Connected with the device,
A seismic isolation and seismic isolation structure of a structure having a large tower-like ratio, wherein laminated rubber is disposed on the main structure and the seismic isolation layer of the column.

The operation of the present invention will be described.

FIG. 3 is a diagram showing that there is an effect of reducing the response by comparing the overturning moment of a normal seismic isolation structure with the seismic isolation / isolation structure to which the present invention is applied.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention. The structure is equipped with the laminated rubber 1, the structure is made seismic-isolated, the top beam 2 projects from the top of the structure, the support column 3 is erected, and the support column 3 and the top beam 2 are connected to each other.
Joining is performed via the vibration damping device 4. For the vibration damping device 4, for example, an oil damper or the like is used.

FIG. 2 is a diagram of a structure equipped with a normal, seismic isolation rubber 1. The tower ratio, that is, the height H of the structure and the width L of the structure are shown.
When the ratio H / L is 2.5 or more, the overturning moment increases and the pulling force on the tension side is large, making it difficult to achieve a structure.

[0011]

The effects of the present invention are as follows.

In a normal seismic isolation structure, the tower ratio of a building is 2.5
When it exceeds, the pull-out force due to the overturning moment at the time of the earthquake becomes large, and the pull-out of the seismic isolation rubber may occur, making it difficult to establish as a structure.

[0013] Therefore, it is possible to construct a seismic control frame suitable for reducing the overturning moment and to establish a seismic isolation structure even for a structure having a large tower ratio.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a view of a structure equipped with a normal seismic isolation rubber 1. FIG.

FIG. 3 shows an ordinary seismic isolation structure and a seismic control system to which the present invention is applied.
It is the figure which showed that there was a reduction effect in response by comparing the overturning moment of a base-isolated structure.

[Explanation of symbols]

1 ... laminated rubber, 2 ... top beam, 3 ... support column, 4 ... vibration control device

Claims (1)

(57) [Claims] 1. A seismic isolation / isolation structure for a structure having a tower-like ratio, that is, a ratio H / L of a height H to a width L of the main structure is larger than 2.5, wherein a top beam is formed from the top of the main structure. Protruding, standing upright on the main structure and the seismic isolation layer continuously toward the tip of the top beam, and connecting the top beam separated from the top beam at the top with a vibration damping device. A seismic isolation / seismic isolation structure for a structure having a large tower ratio, wherein laminated rubber is disposed on the main structure and the seismic isolation layer of the support.