JPS6325149B2 - - Google Patents

Description

[Detailed Description of the Invention] [Detailed Description of the Invention] The present invention provides a structure in which a seismic isolation device is interposed between a structure and the foundation ground, and the seismic isolation device causes relative displacement between the two. A control device for a seismic isolation device for a structure configured to a guide rail provided therein, a stopper mounted so as to be slidable along the guide rail and whose tip abuts against the side surface of the other part, and a stopper disposed between the stopper and the one part, and always a first biasing member biased to cause the stopper to slide; a pair of locking members pivoted to the one portion so as to be openable and closable; It is characterized by a second biasing member attached to the stopper and biased so as to always close and contract the pair of locking members and lock them to the rear end of the stopper. In the case of seismic isolation devices for structures, the seismic isolation devices operate only when a large external force is applied to the structure that would impair its function or cause destruction, and the seismic isolation device does not operate when a weak input is applied. The object of the present invention is to provide a seismic isolation control device as described above.

Since the present invention is configured as described above, a structure in which a seismic isolation device is interposed between the foundation ground and
The force acting between the support structure rigidly constructed around the structure on the foundation ground is smaller than the urging force of the second urging member, and the stopper is locked by the locking member. When the stopper cannot be released, since the stopper is locked by the locking member, there is no relative displacement between the structure and the support structure, and the two are integral. Therefore, according to the present invention, the seismic isolation device does not operate even when a weak input is applied. Therefore, when a large earthquake external force that causes the structure to lose its function or cause destruction acts on the structure, the pair of locking members expands against the urging force of the second urging member. The lock on the opening locking member is released, and the stopper slides along the guide rail by the biasing force of the first biasing member.
Therefore, there is no pressure between the structure and the support structure, and the seismic isolation device acts to prevent the structure from losing its function or being destroyed.

According to the present invention, in the seismic isolation device for a structure, the seismic isolation device operates only when a large external force is applied to the structure that would impair its function or cause destruction, and when a weak force is applied, the seismic isolation device operates. It is possible to prevent the seismic isolation device from operating.

The present invention will be described below with reference to the illustrated embodiments.

A is a structure with a seismic isolation device C interposed between it and the foundation ground D, B is a support structure rigidly constructed around the structure A on the foundation ground D, and a guide rail 1 is installed on top of it. has been installed. Reference numeral 2 denotes a stopper with an occluded circular cross section that is slidably fitted into the guide rail 1. A screw rod 3 is screwed onto the tip of the stopper so that its protrusion length can be adjusted. 9
As shown in the figure, the ball bearing 4 is installed,
It is pressed against a steel plate 5 fixed to the circumferential surface of the structure A,
Only axial forces are transmitted to the stopper 2.

Reference numeral 6 denotes a pair of locking members each formed in a bifurcated shape and pivotally supported on the supporting structure B via pins 7 on both sides of the guide rail 1 so as to be rotatable therebetween. Furthermore, rods 8 are provided on both sides of the guide rail 1 in parallel with the rail 1.
A compression bullet 12 is interposed between a washer 10 supported by a nut 9 screwed onto the threaded portion of the front end of the rod 8 and a washer 11 slidably fitted to the rear end of the rod 8. Due to the force of the ammunition 12, the washer 1
The pressing piece 13 provided on the locking member 6 has a bifurcated shape.
By pressing , both locking members 6 are rotated around pin 7 so that the end locking claws 6a of both locking members 6 are closed and contracted, and one end of the stopper 2 is rotated with each of the locking claws 6a. The stopper 2 is stretched between the mounting piece 14 disposed near the other end and the support structure B, and the stopper 2 is always slid toward the one end. Activated tension bomb 15
This prevents the guide rail 1 from sliding along the guide rail 1.

The tension bullet 15 constitutes the first biasing member, and the rod 8, the nut 9 mounted on the rod 8, the washer 10, the washer 11 with the pressing piece 13, and the bullet 12 constitute the first biasing member. This constitutes a second biasing member.

In addition, 16 in the figure is a guide portion of the rod 8, 1
Reference numeral 7 designates a fixing pin of the guide, and the pin 17 is attached to a rotation stopper piece 18 of the locking member 6 disposed on the support structure B.

By adjusting the screw rotation of the nut 9, the pressing force of the bullet 12 against the locking member 6 can be adjusted, and the restraining force of the stopper 2 by the distal end locking pawl 6a of the locking member 6 can be set to a predetermined value. It should be adjusted so that

In addition, 19 in the figure is a cushion attached to the front end of the guide rail 1.

In addition, as shown in the above-mentioned embodiment and the explanatory diagram of the usage state in FIG. It is arranged on the support structure B side of the support structure B which is rigidly constructed, or it is arranged on the structure A side as shown in FIG. may be brought into contact with the support structure B.

Since the device of the present invention is configured as described above, the force acting between the structure A and the support structure B is weak and resists the urging force of the compression bombardment machine 12, so that the pair of If the force is smaller than the force that causes the locking members 6, 6 to expand, the stopper 2 is locked by the end locking claws 6a of the locking members 6, so that the structure A and the support structure B are Since no relative displacement occurs between them, the structure A and the support structure B perform an integrated movement and the seismic isolation device C is not activated.

In the event of an earthquake, if a large external force is applied to Structure A that may impair its function or cause its destruction,
This force causes the stopper 2 to open the pair of locking members 6, 6 against the urging force of the compression bullet 12, and the locking between the stopper 2 and the locking pawl 6a is released, and the stopper 2 slides along the guide rail 1 by the force of the tension bomb 15, and there is no pressure between the structure A and the support structure B, and the seismic isolation device C
is activated.

Furthermore, after the earthquake is over, simply by pushing the stopper 2 forward against the tension bomb 15, the rear end of the stopper 2 is automatically locked by the locking pawl 6a of the locking member 6. , a stopper 2 is fixed between the structure A and the support structure B. At this time, if there is a residual displacement between the structure A and the support structure B, the screw rod 3 is screwed to adjust its length and the structure A is attached to the support structure B by this device. It is fixed.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the seismic isolation control device for a structure according to the present invention, FIGS. 2 and 3 are views taken in the direction of the arrows in FIG. The figure is a side view, Figures 5 and 6 are plan views showing the operating process during an earthquake, Figure 7 is a plan view showing details of the stopper locking part, Figure 8 is a front view, and Figure 9 is a plan view showing the details of the stopper locking part. The figure is a side view of the stopper tip, No. 10.
1 and 11 are explanatory diagrams showing the usage state of the apparatus of the present invention, respectively. A...Structure, B...Support structure, C...Seismic isolation device, 1...Guide rail, 2...Stopper, 6
... Locking member, 6a ... Locking claw, 12 ... Compression bullet, 15 ... Tension bullet.

Claims (1)

[Claims] 1. In a seismic isolation device for a structure in which a seismic isolation device is interposed between the structure and the foundation ground, and the seismic isolation device is configured to cause relative movement between the two, the structure a guide rail disposed on either part of a support structure rigidly constructed around the object and the structure on the foundation ground;
A stopper is mounted so as to be slidable along the guide rail and whose tip abuts against the side surface of the other part, and a stopper is disposed between the stopper and the one part so that the stopper always slides. a first biasing member that is energized; a pair of locking members that are pivotally supported on the one portion so as to be openable and closable and that engage and disengage from the rear end of the stopper; A seismic isolation control device for a structure, comprising a second biasing member biased to close the locking member and lock the locking member to the rear end of the stopper.