JP5080938B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device that reduces vibration of a building that has been seismically isolated.

  Since the seismic isolation device has a structure in which the entire building is supported by laminated rubber, the building subjected to the seismic isolation has a laminated rubber-building vibration system and has a frequency region that amplifies fine vibrations. For this reason, while exhibiting the function which suppresses the vibration transmitted to a building with respect to large vibrations, such as an earthquake, an amplitude may be increased with respect to a slight vibration.

  For example, as shown in FIG. 10, when a large truck 70 travels on a surrounding road 68, the vibration wave P generated on the road 68 propagates through the ground while being attenuated. The vibration wave Q that has reached the foundation 32 is amplified by the seismic isolation device 34, and becomes a vibration wave A that is larger than the vibration wave Q in the first floor slab 20 of the building 40.

Due to the influence of the micro-vibration generated in the seismically isolated building, there is a problem that the yield of the product is lowered in the building that requires a very fine vibration environment represented by a semiconductor factory.
Currently, in order to prevent a decrease in product yield, manufacturing equipment that is greatly affected by micro-vibration is placed on a vibration isolation table. However, this measure limits the layout of manufacturing equipment. Moreover, the expense for installing an anti-vibration stand is needed separately.
For this reason, there is a need for a technique for controlling the seismically isolated building as a whole.

As a means for reducing the vibration of the entire building, for example, a technique has been proposed in which an active damping device is arranged on the roof of a building to reduce the vibration (Patent Document 1). However, Patent Document 1 does not relate to a base-isolated building, and vibrations that can be reduced are only in the vertical direction, and horizontal vibrations cannot be reduced.
JP-A-8-53954

  In view of the above-described facts, an object of the present invention is to reduce the vibration of a building subjected to seismic isolation as a whole building.

  The vibration damping device according to the first aspect of the present invention is a vibration damping device that reduces vibrations of a building that has been seismically isolated by a seismic isolation device arranged at a base, and detects the direction, frequency, and amplitude of the vibration. Building vibration detecting means, and a longitudinal vibration reducing means provided in the building for generating longitudinal vibration force to reduce longitudinal vibration of the building, and provided in the building for lateral vibration. A lateral vibration reducing means for generating a force to reduce a lateral vibration of the building, and an excitation force generated by the longitudinal vibration reducing means and the lateral vibration reducing means based on a detection result from the building vibration detecting means. And control means for controlling.

According to the first aspect of the present invention, the building subjected to seismic isolation is provided with longitudinal vibration reducing means and lateral vibration reducing means for applying an excitation force acting on the building in a direction to cancel the vibration of the building. ing.
The longitudinal vibration reducing means generates a vertical vibration force, and the horizontal vibration reduction means generates a horizontal vibration force.

  In addition, building vibration detection means for detecting the vibration of the building that has undergone seismic isolation is arranged. The building vibration detection means detects the direction, frequency and amplitude of building vibration and outputs the result to the control means. The control means calculates the excitation force generated by the longitudinal vibration reduction means and the lateral vibration reduction means based on the direction, frequency and amplitude of the building vibration input from the building vibration detection means, and reduces the longitudinal vibration based on the calculation result. And means for controlling the transverse vibration reducing means.

  As a result, the vertical and horizontal vibrations of the seismic isolated building are canceled by the excitation force applied from the vertical vibration reducing means and the horizontal vibration reducing means, and the vibration of the entire building is reduced. This eliminates the need to place the manufacturing equipment on the vibration isolation table.

  The vibration force applied to reduce the vibration of the building may be smaller than the vibration force required for ordinary buildings because the building is seismically isolated. In addition, the actuator constituting the transverse vibration reducing means can be reduced in size.

According to a second aspect of the present invention, in the vibration damping device according to the first aspect, the longitudinal vibration reducing means causes the generated longitudinal vibration force to act on the pillars of the building to cause the vertical direction of the building. The lateral vibration reducing means reduces the lateral vibration of the building by applying the generated lateral excitation force to the pillars of the building .
According to the invention described in claim 2, since the vertical and horizontal excitation forces for canceling the vibration are applied to the building columns having excellent controllability, the control means can efficiently vibrate the entire building. Can be reduced.
According to a third aspect of the present invention, in the vibration damping device according to the second aspect , the longitudinal vibration reducing means and the lateral vibration reducing means are provided in a lower part of the building, and the longitudinal excitation force and the lateral direction are provided. The excitation force is applied to the lower part of the column .
According to the invention described in claim 3 , since the longitudinal and lateral exciting forces for canceling the vibration are applied to the lower part of the column , the vibration of the entire building can be efficiently reduced.

According to a fourth aspect of the present invention, in the vibration damping device according to the second aspect , the longitudinal vibration reducing means and the lateral vibration reducing means are provided in an upper part of the building, and the longitudinal excitation force and the lateral direction are provided. The above-mentioned excitation force is applied to the upper part of the column .
According to the invention described in claim 4 , since the vertical and horizontal excitation forces for canceling the vibration are applied to the upper part of the column , the vibration control device does not occupy the building space and the vibration of the entire building. Can be reduced.

According to a fifth aspect of the present invention, in the vibration damping device according to the second aspect , either the longitudinal vibration reducing means or the lateral vibration reducing means is provided at an upper portion of the building, and the other is disposed at a lower portion of the building . It is characterized in that either one of the longitudinal excitation force or the lateral excitation force is applied to the upper part of the column and the other is applied to the lower part of the column .
According to the invention described in claim 5 , either the longitudinal or lateral excitation force is applied to the upper portion of the column , and the other excitation force in the vertical or horizontal direction is applied to the lower portion of the column. . For this reason, a vibration damping device can be arranged according to the structure of the building, and the vibration of the entire building can be reduced well.

The invention according to claim 6 is the vibration damping device according to any one of claims 1 to 5 , wherein the external vibration is provided in the base portion and detects the direction, frequency and amplitude of the vibration of the base portion. Based on detection results from the detection means and the external vibration detection means, the control means controls the excitation force generated by the longitudinal vibration reduction means and the lateral vibration reduction means.
According to the sixth aspect of the present invention, the external vibration detecting means is provided in the foundation of the building, and detects the direction, frequency and amplitude of the vibration of the foundation.
As a result, it is possible to reduce the combined vibration of the building due to the vibration generated inside the building and the vibration transmitted from the foundation of the building.

The invention described in claim 7 is characterized in that the building includes the vibration damping device according to any one of claims 1 to 6 .
According to the invention described in claim 7 , the building is provided with the vibration control device. As a result, vibration generated in the building can be reduced.

  Since this invention is set as the said structure, it can reduce the vibration of the building subjected to seismic isolation as the whole building.

(First embodiment)
As shown in FIG. 1, the foundation portion 32 is provided with a rectangular frame-like foundation wall 32 </ b> A. Laminated rubbers 34 as seismic isolation devices are provided at the four corners of the foundation wall 32A.

  A pillar 14 is erected on the laminated rubber 34, and a first floor slab 20 serving as a floor surface and a second floor slab 24 serving as a ceiling surface are supported by the pillar 14. A building 40 is constituted by the pillar 14, the first floor slab 20, and the second floor slab 24.

  On the first floor slab 20, a building sensor 26 as a building vibration detecting means is provided. The building sensor 26 detects the vibration direction (vertical direction (Z-axis direction) and lateral X-axis direction and Y-axis direction), frequency, and amplitude of the first-floor slab 20, and the control result is a control device as control means. Output to 30.

A longitudinal vibration device 12 as a longitudinal vibration reducing means is disposed in the lower portion 14E of the column 14A.
Although details of the longitudinal vibration device 12 will be described later, the longitudinal vibration device 12 is disposed inside the column 14A, generates a longitudinal (Z-axis direction) excitation force, and vibrates the column 14A in the vertical direction with the generated excitation force. It is configured. At this time, the magnitude of the longitudinal excitation force to be generated and the generated timing are controlled by the control device 30.

The longitudinal vibration device 12 is also disposed below the pillars 14B to 14D.
On the upper surface of the first floor slab 20, an X-axis vibration device 16 as a lateral vibration reducing means is disposed beside the column 14 </ b> B.

Although details of the X-axis vibration device 16 will be described later, the X-axis vibration device 16 is fixed to the column 14B, generates a vibration force in the X-axis direction, and vibrates the column 14B in the X-axis direction with the generated vibration force. The magnitude of the exciting force in the X-axis direction to be generated and the generated timing are controlled by the control device 30.
The X-axis vibration device 16 is also arranged beside the column 14D.

On the upper surface of the first floor slab 20, a Y-axis vibration device 18 as a lateral vibration reducing means is disposed beside the column 14A.
The Y-axis vibration device 18 has the same configuration as the X-axis vibration device 16 and differs only in the arrangement direction.

The Y-axis vibration device 18 is fixed to the side of the column 14A, generates a vibration force in the Y-axis direction, and vibrates the column 14A in the Y-axis direction with the generated vibration force. The magnitude of the exciting force in the Y-axis direction to be generated and the generated timing are controlled by the control device 30.
The Y-axis vibration device 18 is also disposed beside the column 14C.

Next, the arrangement positions of the X-axis vibration device 16 and the Y-axis vibration device 18 will be described.
As shown in FIG. 2, the X-axis vibration device 16 is disposed beside the column 14 </ b> B and is fixed to the side wall of the column 14 </ b> B with screws 98. The arrow of the X-axis vibration device 16 indicates the direction of the excitation force, and the X-axis vibration force of the X-axis vibration device 16 is applied to the side wall of the column 14B.

  Similarly, the X-axis vibration device 16 is fixed to the side surface of the column 14D, and the Y-axis vibration control device 18 is fixed to the side surfaces of the column 14A and the column 14C. At this time, the excitation force generated by the X-axis vibration device 16 and the Y-axis vibration control device 18 is configured to be transmitted to the side walls of the fixed columns.

  The X-axis damping device 16 and the Y-axis damping device 18 are arranged beside the columns 14A to 14D because the column 14 is formed of a rigid material (for example, H-shaped steel) and controls the building 40. This is because the controllability is excellent.

  Although the details will be described later by adopting the above configuration, the control device 30 controls the vibration of the first floor slab 20 based on the detection result of the vibration direction, frequency and amplitude of the first floor slab 20 input from the building sensor 26. The excitation force necessary for this is calculated and output to the longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18 as control signals.

The vertical vibration control device 12, the X-axis vibration device 16, and the Y-axis vibration means 18 generate an instructed excitation force according to the control signal and act in a direction to cancel the vibration of the first floor slab 20. As a result, vibration of the first floor slab 20 can be reduced. If the vibration of the first floor slab 20 is reduced, the vibration of the building 40 is also reduced.
Next, the vertical vibration damping means 12 will be described with reference to FIG.

  As shown in FIG. 3a, the column 14A is formed of H-shaped steel. A ceiling wall 104 and a bottom wall 106 made of a steel plate are welded between the flanges of the lower part 14E of the column 14A, and the ceiling wall 104 and the bottom wall 106 are welded to both sides of the web of the lower part 14E of the column 14A. An enclosed accommodation portion 107A and accommodation portion 107B are formed.

  The damping device 100 is housed in each of the housing portion 107A and the housing portion 107B. In addition, since the damping device 100 in the housing portion 107A and the housing portion 107B has the same configuration, the vibration damping device 100 housed in the housing portion 107A will be described.

  3A and 3B, the vibration damping device 100 includes a vibration unit 108 that generates vibrations, and vibrations that are transmitted to the ceiling wall 104 and the bottom wall 106 by adjusting the frequency generated by the vibration unit 108. It is comprised with the adjustment part 110. FIG.

  The vibration unit 108 has two channel steels opposed to each other on a bottom plate 118 and a column 120 formed by forming a gap 121, two auxiliary columns 126 erected on both sides of the column 120, a hollow A movable portion 122 that is cylindrically inserted on the support column 120 and a top plate 116 that is supported by the support column 120 and the auxiliary support column 126 are provided.

  The support column 120 is surrounded by the movable portion 122, and a support member 128 extending inward from the movable portion 122 is positioned in the gap portion 121 so as to be movable in the vertical direction. Further, a plurality of magnets 142 are fixed in a vertical direction on the inner side (web) of the channel steel constituting the support column 120.

  In the center of the support member 128, an electromagnetic coil 130 is fixed, which is wound around a core metal (not shown), and is opposed to the magnet 142. Thereby, the electromagnetic coil 130 and the movable part 122 are integrated, and can move along the outer peripheral surface of the column 120.

  One end of a cable 132 that can be energized is connected to the electromagnetic coil 130. The other end of the cable 132 is connected to a power source (not shown), and control of energization to the cable 132 is controlled by the control device 30.

  On the outer surface of the movable portion 122, a weight 124 made of a steel plate is fixed so as to be replaceable by fixing means such as a bolt and a nut (not shown). By changing the weight of the weight 124, the weight of the movable portion 122 can be changed.

  Here, when the electromagnetic coil 130 is energized in accordance with a command from the control device 30, a magnetic field is generated around the electromagnetic coil 130, and the movable portion 122 is supported by the column 120 by the repulsive force between the magnetic field and the magnetic field of the magnet 142 described above. Move along.

  The moving direction of the movable part 122 changes depending on the energization direction to the electromagnetic coil 130, and the movable part 122 moves in the vertical direction (arrow F direction) when the control device 30 appropriately changes the energization direction. . As the movable part 122 moves in the vertical direction, the vibration part 108 vibrates and a vibration force is generated.

On the other hand, the vibration adjustment unit 110 includes a spring 112 having a predetermined spring constant (inherent rigidity) and an air spring 114 whose rigidity changes depending on the pressure of the injected air.
One end of the spring 112 and the air spring 114 is fixed to the ceiling wall 104 or the bottom wall 106, and the other end is fixed to the top plate 116 or the bottom plate 118.

  A pipe (not shown) is connected to the air spring 114, and the other end of the pipe is connected to an air supply means such as an air cylinder or a compressor. A switching valve for closing or opening the pipe is provided in the middle of the pipe path. The air supply means and the switching valve are driven and controlled by the control device 30 described above.

  Here, when air is supplied to the air spring 114 by the above-described air supply means or the supply is stopped, the spring constant of the air spring 114 changes. Thereby, the rigidity of the vibration adjustment unit 110 is changed, and the frequency generated in the vibration unit 108 is variable.

  In this embodiment, the air spring 114 is used for the vibration adjusting unit 110. However, as another means for changing the rigidity (changing the spring constant), for example, a configuration in which the distance between the leaf spring fulcrums is changed may be used.

With the above-described configuration of the vertical vibration damping means 12, the vertical vibration damping means 12 can generate a vibration force, and a vertical vibration force can be applied to the column 14A. In addition, although the pillar 14A was demonstrated, the vertical damping means 12 provided in the other pillar 14B-pillar 14D is also the same structure, and description is abbreviate | omitted.
Next, the X-axis vibration device 16 will be described with reference to FIG.

As shown in FIG. 4, a guide shaft 80 formed of a round bar is horizontally disposed inside the case 92. Both end portions of the guide shaft 80 are fixed to the wall surface of the case 92 with a fixture 94.
An iron weight 82 is inserted into the guide shaft 80. The weight 82 is provided with a ball bearing 84 that penetrates the weight 82 and has a shaft hole in the horizontal direction, and the guide shaft 80 is slidable by the ball bearing 84.

  In addition, a rotating shaft 86 formed of a long screw is disposed in the case 92 in parallel with the guide shaft 80. The rotating shaft 86 is rotatably supported on the wall surface of the case 92 by a shaft support 96, and a motor 88 is attached to one end of the rotating shaft 86.

  The motor 88 is supplied with electric power from a power source (not shown), and the control device 30 controls the switching of the rotation direction and the rotation speed. The rotating shaft 86 is rotated by the rotational force of the motor 88. That is, by changing the rotation direction and rotation speed of the motor 88, the rotation direction and rotation speed of the rotation shaft 86 are changed.

A through hole is provided in the weight 82 in parallel with the axis of the ball bearing 84, and a female screw 89 that meshes with a male screw of the rotating shaft 86 is cut in the through hole. As the rotation shaft 86 rotates, the meshing female screw 89 moves, and the weight 82 integrated with the female screw 89 moves in parallel with the rotation shaft 86.
The shock absorbing material 90 is arrange | positioned at the both sides | surfaces of case 92, and the impact when the weight 82 collides with the side surface of case 92 is adjusted.

  The case 92 is disposed beside the column 14, and the side surface of the case 92 and the side wall of the column 14 are fixed with screws 98. The case 92 is disposed on the first floor slab 20, and the bottom surface of the case 92 and the first floor slab 20 are fixed with screws 98.

  With such a configuration, the direction and speed of movement of the weight 82 in the lateral direction can be adjusted via the rotation shaft 86 by controlling the direction and speed of rotation of the motor 88.

By changing the moving speed of the weight 82 in the horizontal direction, a lateral excitation force is generated. The column 14 can be vibrated in the lateral direction by the lateral exciting force, and the lateral vibration of the first floor slab 20 can be canceled.
The configuration of the Y-axis vibration device 18 is the same, and a description thereof is omitted.

  Next, the vibration damping action of the building 40 against vibration propagated from outside the building will be described with reference to FIG. 5a to 5c, the horizontal axis represents the period of the vibration wave, and the vertical axis represents the amplitude of the vibration wave.

  As shown in FIG. 5a, the vibration wave Q1 is a vibration wave (amplitude p2, period T1, frequency 1 / T1) propagated to the foundation 32 when a large truck travels on a surrounding road. The vibration wave A1 is a vibration wave (amplitude p1, period T1, frequency 1 / T1) in which the vibration wave Q1 is amplified by the vibration isolating rubber 34 and the first floor slab 20 vibrates.

  The building sensor 26 detects the vibration direction, amplitude p1 and period T1 of the vibration wave A1 in the first floor slab 20, and transmits the detection result to the control device 30. The vibration direction is the vertical direction.

The control device 30 calculates a vibration wave B1 for canceling the vibration wave A1. In this case, the vibration wave B1 has a period shifted from the vibration wave A1 by a half period, and the amplitude p1 and the period T1 are the same vibration waves as the vibration wave A1.
From the calculation result, the control device 30 issues a control signal to the longitudinal vibration device 12 so as to generate the vibration wave B1 (amplitude p1, vibration frequency 1 / T1, delay T1 / 2).

  The longitudinal vibration device 12 energizes the electromagnetic coil 132 to vibrate the excitation unit 108. The vibration unit 108 adjusts the rigidity of the spring 112 and the air spring 114 to generate a vibration wave B1 having an amplitude p1, a vibration frequency 1 / T1, and a period T1 / 2 delay.

  By applying this vibration wave B1 to the pillar 14, the longitudinal vibration wave A1 propagated to the first floor slab 20 is canceled out, and the vibration of the first floor slab 20 is reduced.

  If weak vibrations are still detected by the building sensor 26, the control device 30 adjusts the energization amount to the electromagnetic coil 130, or compressed air is supplied to the air chamber of the air spring 114 by a compressor (not shown). By supplying air from the stored buffer or exhausting air from the air chamber of the air spring 114, the air pressure of the air spring 114 is adjusted to change the rigidity, and feedback control is appropriately performed. Thereby, a weak vibration can be reduced.

  Next, when the frequency and amplitude of vibration propagated to the building 40 change, for example, a case where a large truck subsequently travels after a passenger car travels on a surrounding road will be described.

  As shown in FIG. 5b, the vibration wave Q2 is a vibration wave (amplitude p4, period T2, frequency 1 / T2) that is propagated to the base 32 when a passenger car travels on a surrounding road. The wave A2 is a vibration wave (amplitude p3, period T2, frequency 1 / T2) in which the vibration wave Q2 is amplified by the vibration isolating rubber 34 and the first floor slab 20 vibrates. Due to the vibration caused by the passenger car, the amplitude p4 is smaller than the amplitude p2 in FIG. 5a, and the amplitude p3 shown in FIG. 5b is smaller than the amplitude p1.

The building sensor 26 detects the vibration direction, amplitude p3 and period T2 of the vibration wave A2 in the first floor slab 20, and transmits the detection result to the control device 30. The vibration direction is the vertical direction.
The control device 30 calculates a vibration wave B2 for canceling the vibration wave A2. In this case, the vibration wave B2 has a period shifted from the vibration wave A2 by a half period, and the amplitude p3 and the period T2 are the same vibration waves as the vibration wave A2.

From the calculation result, the control device 30 transmits a control signal to the longitudinal vibration device 12 so as to generate a vibration wave B2 (amplitude p3, frequency 1 / T2, delay T2 / 2).
The longitudinal vibration device 12 energizes the electromagnetic coil 132 to vibrate the excitation unit 108. The vibration unit 108 adjusts the rigidity of the spring 112 and the air spring 114 to generate a vibration wave B2 having an amplitude p3, a vibration frequency 1 / T2, and a period T2 / 2 delay.

  When this vibration wave B2 is applied to the pillar 14, the vertical vibration wave A2 propagated to the first floor slab 20 is canceled, and the vibration of the first floor slab 20 is reduced.

Here, since the large truck has passed after the passenger car, the first floor slab 20 again vibrates with the vibration wave A1 shown in FIG. 5a.
The building sensor 26 detects the vibration wave A1 (amplitude p1, period T1, vibration frequency 1 / T1), and transmits the detection result to the control device 30.

The control device 30 outputs an instruction for changing the generated vibration wave B2 to the vibration wave B1 to the longitudinal vibration device 12 based on the detection result.
As shown in FIG. 5c, the longitudinal vibration device 12 adjusts the energization amount and energization direction to the electromagnetic coil 130 (see FIG. 3b) and adjusts the amplitude p3 to the amplitude p1 (arrow Y).

Further, the longitudinal vibration device 12 adjusts the air pressure of the air spring 114 to change the rigidity, and adjusts the frequency from 1 / T2 to the frequency 1 / T1 (arrow X).
As a result, a vibration wave B1 (amplitude p1, vibration frequency 1 / T1, period T1 / 2 delay) is generated again in the vibration unit 108, and the vibration wave A1 is canceled by the vibration force of the vibration wave B1. The vibration wave A1 propagated to the floor slab 20 can be reduced.

  As described above, when canceling the vibration (vibration wave) propagated to the building 40, the amplitude is adjusted by the vibration of the excitation unit 108, and the frequency is adjusted by changing the rigidity of the air spring 114. The magnitude of the excitation force can be controlled with a simple configuration.

  Further, by providing the air spring 114 on the ceiling wall 104 and the bottom wall 106 of the accommodating portions 107A and 107B of the vibration portion 108, the vibration force can be applied regardless of whether the vibration portion 108 moves upward or downward. Occur. Thereby, even if the vibration unit 108 is small, the vibration force can be amplified.

  Next, a case where the first-floor slab 20 vibrates in the X-axis direction with an indoor vibration source, for example, when a person moves on the first-floor slab 20, will be described with reference to FIG. The horizontal axis in FIG. 6 is the period, and the vertical axis is the amplitude.

As shown in FIG. 6, the vibration wave A3 is a vibration wave (amplitude p5, vibration frequency 1 / T3) when the first-floor slab 20 vibrates in the X-axis direction with an indoor vibration source.
The building sensor 26 detects the vibration wave A3 (amplitude p5, period T3, frequency 1 / T3), and transmits the result to the control device 30. The vibration direction is the X-axis direction.

  The control device 30 calculates a vibration wave B3 for canceling the vibration wave A3. In this case, the period of the vibration wave B3 is shifted from the vibration wave A3 by a half period, and the amplitude p5 and the period T3 are the same vibration waves as the vibration wave A3.

From the calculation result, the control device 30 issues a control signal to the X-axis vibration device 16 so as to generate a vibration wave B3 (amplitude p5, frequency 1 / T3, period T3 / 2 delay).
The X-axis vibration device 16 rotates the motor 88, rotates the rotation shaft 86, and moves the weight 82 to generate the vibration wave B3 in the X-axis direction. At this time, the amplitude is adjusted by the moving amount of the weight 82, and the period is adjusted by the switching timing of the moving direction.

By applying this vibration wave B3 in the X-axis direction of the pillars 14B and 14D, the vibration wave A3 in the X-axis direction propagated to the first-floor slab 20 is canceled, and the vibration of the first-floor slab 20 in the X-axis direction can be reduced. .
(Second Embodiment)

  As shown in FIG. 7, a longitudinal vibration device 52 is disposed on the upper part of the second floor slab 24. The longitudinal vibration device 52 is provided in a box-shaped storage unit (not shown) installed in the second-floor slab 24 located above the pillar 14A.

  The vertical vibration device 52 generates a vertical vibration force at the upper part of the second-floor slab 24, and applies the generated vertical vibration force to the column 14A to reduce the vertical vibration of the first-floor slab 20. . In addition, it is the same structure also about pillar 14B-14D.

  An X-axis vibration device 16 and a Y-axis vibration device 18 are disposed beside the box-shaped storage unit at the upper part of the second floor slab 24. The X-axis vibration device 16 and the Y-axis vibration device 18 are fixed to the side wall of the box-shaped storage unit, generate excitation forces in the X-axis direction and the Y-axis direction, and store the generated excitation forces in a box shape. In addition to the part, the vibration of the first floor slab 20 in the X-axis direction and the Y-axis direction is reduced. The arrangement method of the X-axis vibration device 16 and the Y-axis vibration device 18 is the same as that in the second embodiment.

The building sensor 26 is arranged at the upper part of the first floor slab 20, detects vibration of the first floor slab 20, and outputs the result to the control device 30. The control device 30 outputs a control signal to the longitudinal vibration device 52, the X-axis vibration device 16, and the Y-axis vibration device 18 based on the detection result of the building sensor 26.
The control method is the same as in the first embodiment, and a description thereof is omitted.

Since the column 14 is made of H-shaped steel and has high rigidity, the longitudinal vibration device 52, the X-axis vibration device 16 and the Y-axis vibration device 18 are arranged on the second-floor slab 24, and each is generated from the second-floor slab 24. Even if the applied excitation force is applied to the column 14, the vibration of the first floor slab 20 can be reduced.
It is not necessary to arrange a vibration damping device on the first floor slab 20, and the first floor slab 20 can be effectively used.

  The longitudinal vibration device 52 may be disposed not on the upper part of the second floor slab 24 but on the lower surface of the second floor slab 24 and inside the upper part 14U of the column 14A. The same applies to the columns 14B to 14D.

Further, the X-axis vibration device 16 and the Y-axis vibration device 18 may be attached not to the upper part of the second floor slab 24 but to the second beam.
By setting it as such a structure, the upper surface of the 2nd floor slab 24 can be used effectively.

(Third embodiment)
As shown in FIG. 8, the longitudinal vibration device 12 is arranged in the lower portion 14E of the column 14A, which is the same as that in the first embodiment. The other pillars 14B to 14D are the same.
On the other hand, the X-axis vibration device 16 and the Y-axis vibration device 18 are provided on the same second floor slab 24 as in the second embodiment.

The building sensor 26 is arranged at the upper part of the first floor slab 20, detects vibration of the first floor slab 20, and outputs the result to the control device 30. The control device 30 outputs a control signal to the longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18 based on the detection result of the building sensor 26.
The control method is the same as in the first embodiment, and a description thereof is omitted.

The longitudinal vibration device 12 may be disposed on the upper part of the second floor slab 24, and the X-axis vibration device 16 and the Y-axis vibration device 18 may be disposed on the upper side of the first floor slab 20 and beside the lower portions of the columns 14A to 14D. Good.
(Fourth embodiment)

  As shown in FIG. 9, an external sensor 60 that is an external vibration detecting means is disposed on the base portion 32.

  The external sensor 60 detects the vibration direction (vertical direction (Z-axis direction) and horizontal direction (X-axis direction, Y-axis direction)), frequency, and amplitude of the base portion 32, and the control result is a control device that is a control means. To 36. The arrangement of the longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18 is the same as that in the first embodiment.

  Based on the detection results from the external sensor 60 and the building sensor 26, the control device 36 calculates the magnitude and period of the excitation force generated by the longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18. The result is output to the longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18.

The longitudinal vibration device 12, the X-axis vibration device 16, and the Y-axis vibration device 18 generate an excitation force based on an instruction from the control device 36, and apply the generated excitation force to the column 14 to cause the first floor flav 20 Damping.
As a result, the vibration generated inside the building and the combined vibration of the building due to the vibration transmitted from the outside of the building can be reduced.

1 is a diagram showing a basic configuration of a vibration damping device according to a first embodiment of the present invention. FIG. 3 is a diagram illustrating an arrangement example of the lateral vibration device according to the first embodiment of the present invention. 1 is a diagram showing a basic configuration of a vertical vibration damping device according to a first embodiment of the present invention. It is a figure which shows the basic composition of the horizontal damping device which concerns on the 1st Embodiment of this invention. FIG. 3 is a diagram illustrating the principle of a vibration damping action according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating the principle of a vibration damping action according to the first embodiment of the present invention. It is a figure which shows the basic composition of the damping device which concerns on the 2nd Embodiment of this invention. It is a figure which shows the basic composition of the damping device which concerns on the 3rd Embodiment of this invention. It is a figure which shows the basic composition of the damping device which concerns on the 4th Embodiment of this invention. It is a figure which shows generation | occurrence | production of the vibration of the building subjected to seismic isolation.

Explanation of symbols

10 Damping device 12 Longitudinal vibration reducing means (longitudinal vibration device)
14 pillar 16 transverse vibration reducing means (X-axis vibration device)
18 Lateral vibration reduction means (Y-axis vibration device)
26 Building vibration detection means (building sensor)
30 Control means (control device)
32 Foundation 34 Seismic isolation device (Seismic isolation rubber)
36 Control means (control device)
52 Longitudinal vibration reduction means (longitudinal vibration device)
60 External vibration detection means (external sensor)

Claims (7)

In the damping device that reduces the vibration of the building that has been seismically isolated by the seismic isolation device located at the base,
Building vibration detecting means for detecting the direction, frequency and amplitude of the vibration;
Longitudinal vibration reduction means that is provided in the building and generates longitudinal excitation force to reduce the vertical vibration of the building;
Lateral vibration reducing means provided in the building for generating lateral excitation force to reduce lateral vibration of the building;
Control means for controlling the excitation force generated by the longitudinal vibration reducing means and the lateral vibration reducing means based on the detection result from the building vibration detecting means;
A vibration damping device comprising: The longitudinal vibration reducing means reduces the longitudinal vibration of the building by applying the generated longitudinal excitation force to the pillar of the building,
2. The vibration damping device according to claim 1, wherein the lateral vibration reducing unit reduces the lateral vibration of the building by applying the generated lateral excitation force to the pillar of the building . 3. It provided the longitudinal vibration reduction means and the lateral vibration reduction means at the bottom of the building, the excitation force in the vertical direction of the exciting force and lateral, characterized in that added to the lower portion of the pillar The vibration damping device according to claim 2 . And wherein the set of longitudinal vibration reduction means and the lateral vibration reducing hand stage on top of the building only, the exciting force and vibration force of the lateral front Kitate direction was added to the top of the column The vibration damping device according to claim 2 .   Either one of the longitudinal vibration reducing means or the lateral vibration reducing means is provided in the upper part of the building, and the other is provided in the lower part of the building, and either the vertical vibration force or the horizontal vibration force is provided. 3. The vibration damping device according to claim 2, wherein one is added to the upper part of the column and the other is added to the lower part of the column. An external vibration detecting means provided on the base portion for detecting the direction, frequency and amplitude of vibration of the base portion;
6. The excitation force generated by the longitudinal vibration reducing means and the lateral vibration reducing means is controlled by the control means based on a detection result from the external vibration detecting means. The vibration damping device according to item 1. The building provided with the damping device of any one of Claims 1-6.

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