JP2009024473A - Seismic response control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic response control device having excellent responsiveness particularly to small oscillations and developing seismic response control function against large oscillations. <P>SOLUTION: In this seismic response control device installed between an upper structure 1 and a floor surface, an interposition member is interposed between an upper member 3 in which a partial spherical recessed part is formed and a lower member 4 in which a partial spherical recessed part is formed. The interposition member is formed of a ring-shaped elastic body 6. A steel ball 5 is fitted into the center gap part 61 of the elastic body 6. The inner diameter of the center gap part 61 of the elastic body is larger than the outer diameter of the ball screw 5, the inner diameter of the gap part 6 of the elastic body is equal to the outer diameter of the steel ball 5, or the inner diameter of the center gap part 61 of the elastic body is smaller than the outer diameter of the steel ball 5. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a vibration control device, and in particular, provides a vibration control device that has good responsiveness to small vibrations of an earthquake and has the effect of exerting a vibration control function against large vibrations.

Various seismic isolation devices have been developed in order to protect structures from earthquake vibrations. For example, as shown in Japanese Patent Application Laid-Open No. 2002-266933, a cone-contained isolation bearing is known. is there.
JP 2002-266933 A

  However, the ball-contained isolation bearing in the cone has good response to small earthquake shaking, but the device itself has no braking function, so that there is a problem that the shaking is difficult to be settled.

  The present invention has been made as a result of earnest research to solve the above-mentioned problems, and provides a seismic control device that is responsive to small earthquake shaking and can exhibit a damping function against large shaking. To do.

  In the vibration control device installed between the upper structure and the floor surface, an insertion member is inserted between the upper member formed with the partial spherical recess and the lower member formed with the partial spherical recess, The insertion member is characterized by a ring-shaped elastic body and a steel ball fitted in the central gap portion of the elastic body, and the inner diameter of the central gap portion of the elastic body is formed larger than the outer diameter of the steel ball The insertion member is formed by using an insertion member, and the inner diameter of the central void portion of the elastic body is equal to the outer diameter of the steel ball, or the inner diameter of the central void portion of the elastic body is a steel ball. The insertion member is configured using an insertion member formed to be smaller than the outer diameter of the elastic member, and the thickness of the elastic body that is in contact with the steel ball is set to an arbitrary thickness according to the vibration control function It has a responsiveness due to the rolling of only steel balls with respect to small earthquake shaking, In response to this, both the elastic body and the steel ball are subjected to the suppression resistance between the partial spherical recesses, and are constructed so as to generate a vibration control function, and at the time of an earthquake on each floor of a high-rise building structure Depending on the expected amplitude of the insertion member, the inner diameter of the central gap of the elastic body is larger than the outer diameter of the steel ball, or the inner diameter of the central gap of the elastic body and the outside of the steel ball A seismic control device using either an insertion member having the same diameter or an insertion member in which the inner diameter of the central gap of the elastic body is smaller than the outer diameter of the steel ball can be selected and installed. Provided is a vibration control device characterized by comprising.

  Therefore, the seismic control device of the present invention has a good response to a small shaking and has an effect of exhibiting a damping function against a large shaking.

Hereinafter, the damping device of the present invention will be specifically described with reference to the drawings.
In the drawings, FIG. 1 is a cross-sectional view of an essential part of a vibration control device according to the present invention. FIG. 2 is a partial perspective view of an insertion part inserted in the vibration control device according to the present invention. FIG. 3 is a cross-sectional view of the main part showing the operation of the vibration control device according to the present invention. FIG. 4 is a partial perspective view showing another embodiment of the interpolated part of the vibration control device according to the present invention. FIG. 5 is a partial perspective view showing another embodiment of the interpolating part for the vibration control device according to the present invention. FIG. 6 is a partial perspective view showing another embodiment of the interpolating device for the vibration control device according to the present invention.

  As shown in FIG. 1, in the vibration damping device of the present invention installed between the upper structure 1 and the base portion 2, the upper member 3 in which the partial spherical concave portion 31 is formed and the lower side in which the partial spherical concave portion 41 is formed. An insertion member A is inserted between the members 4.

  As shown in FIG. 2, the insertion member A is inserted so that the steel ball 5 is positioned in the ring-shaped elastic body 6 and the gap 61 at the center of the elastic body 6.

  Therefore, the responsiveness due to rolling of only the steel ball 5 is good for small earthquake shaking. That is, since the steel ball 5 is located in the central gap portion 61 of the elastic body 6, the steel ball 5 itself can respond to a small vibration caused by an earthquake.

  When further large shaking occurs, as shown in FIG. 3, the steel ball 5 rolled with small shaking is brought into contact with the elastic body 6, and both the elastic body 6 and the steel ball 5 are located between the partial spherical concave portions 31 and 41. The interposing member A is configured such that it receives a suppression resistance and slides together with the elastic body 6 and can exert a vibration control function by its frictional force.

  As a result, according to the vibration control device of the present invention, the responsiveness is good even for a small vibration, and the vibration control function can be exhibited for a large vibration.

  FIG. 4 is a partial perspective view showing another embodiment of the interpolating part for the vibration damping device according to the present invention. In the case of this interpolating part, the steel ball 5 and the elastic body 6 are Because it is in contact, it has a structure in which the vibration control function acts immediately against a large shake.

  Therefore, in the case of the interpolated part shown in FIG. 4, it is suitable for a floor surface having a large swing amplitude that requires the action of the damping function immediately against a large swing.

  FIGS. 5 to 6 are partial perspective views showing other embodiments of the interpolating parts for the vibration control device according to the present invention, respectively. The case is suitable for a floor surface of a layer having a small swing amplitude compared to the case of the interpolated part in FIG.

  It is principal part sectional drawing of the damping device which concerns on this invention.   It is a fragmentary perspective view of the insertion component inserted by the vibration damping device which concerns on this invention.   It is principal part sectional drawing which shows operation | movement of the damping device which concerns on this invention.   It is a fragmentary perspective view which shows the other Example of the insertion component of the damping device which concerns on this invention.   It is a fragmentary perspective view which shows the other Example of the insertion component of the damping device which concerns on this invention.   It is a fragmentary perspective view which shows the other Example of the insertion component of the damping device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Superstructure 2 Base part 3 Upper member 31 Partial spherical recessed part 4 Lower member 41 Partial spherical recessed part 5 Steel ball 6 Sponge rubber 61 Cavity part A Insertion member

Claims (6)

In the vibration control device installed between the superstructure and the floor,
An insertion member is inserted between the upper member formed with the partial spherical recess and the lower member formed with the partial spherical recess. The insertion member includes a ring-shaped elastic body and a central gap of the elastic body. A vibration control device characterized in that a steel ball is fitted in the part.   2. The vibration control device according to claim 1, wherein the vibration control device is configured by using an insertion member in which an inner diameter of a central gap portion of the elastic body is formed larger than an outer diameter of the steel ball.   Using an insertion member in which the inner diameter of the central void portion of the elastic body and the outer diameter of the steel ball are the same, or an insertion member in which the inner diameter of the central void portion of the elastic body is smaller than the outer diameter of the steel ball The vibration control device according to claim 1, wherein the vibration control device is configured as described above.   2. The vibration control device according to claim 1, wherein the elastic member abutted against the steel ball is configured by using an insertion member in which the thickness of the elastic body is set to an arbitrary thickness corresponding to the vibration control function.   Responsive to the small shaking of the earthquake by rolling only the steel ball, and for large shaking, the elastic body and the steel ball are both subjected to the suppression resistance between the partial spherical recesses to produce a damping function. The seismic control device according to claim 1, which is configured.   Depending on the magnitude of the expected amplitude of each floor of a high-rise building structure during an earthquake, an insertion member in which the inner diameter of the central cavity of the elastic body is formed larger than the outer diameter of the steel ball, or elasticity Either an insertion member in which the inner diameter of the central void portion of the body and the outer diameter of the steel ball are formed identically, or an insertion member in which the inner diameter of the central void portion of the elastic body is smaller than the outer diameter of the steel ball The seismic control device according to claim 1, wherein the seismic control device using the slab can be selectively installed.

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