JPH10121770A - Vibration control device of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attenuate an earthquake vibration, by fitting an elastic member at an angle slanted by 45 degrees between the vertical rod and the horizontal rod made of L-shaped steel materials and providing links between the rods and fixing the vertical rod to a column and fixing the horizontal rod to a beam respectively. SOLUTION: The ends of a vertical rod 1 and a horizontal rod 2 made of L-shaped steel are fixed to each other at a right angle and an elastic member 3 made of a spring steel flat plate is fixted to the fixing end O at an angle slanted by about 45 degree between the vertical rod 1 and the horizontal rod 2. Square-cylindrical links 4, 5 are provided between the elastic member 3 and the horizontal rod 2 and the vertical rod 1 respectively to form a vibration control device 6 for a building. The links 4, 5 are fitted so that the spans OCA, ODA are about 90 degrees and the length of the span OD is about 1/2 of the length of the span OC. A puerility of vibration control devices 6 are radially fitted to a column 7 and the vertical rods 1 are fixed to the column 7 and the horizontal rods are fixed to the beam 8. When the column 7 moves against the beam 8 by an earthquake, the elastic member 3 is pushed by the link 5 and deflected and the vibration of the building 9 is attenuated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building vibration control device, and more particularly to a vibration control device capable of controlling a wooden house during an earthquake.

[0002]

2. Description of the Related Art In general, when an earthquake occurs, buildings such as houses vibrate. In response to this earthquake, wooden houses have been strengthened by taking measures such as bracing and fading.

FIG. 9 is a view showing a state in which a brace is provided for the above-described countermeasure, but in a state in which a dimensional error has occurred due to a time-dependent change or the like, such as a dry wood. In this figure, it is assumed that an earthquake has occurred and a force has acted in the direction of the arrow in the figure. In this case, as shown in FIG. 10, a so-called play state is reached up to a point A where the displacement amount is a predetermined value, and then the position is surely returned to the position of the displacement 0. However, the play state disappears. Then, the brace 101 presses the column 102, and the force increases rapidly. Then, when the force reaches a predetermined value B, it is destroyed.

[0004]

However, in the case of a new construction, at the same time as using the above-mentioned brace, a bearing mainly made of laminated rubber is arranged between the land and the building, and the base is isolated. It is possible to easily take measures such as increasing the strength by using reinforcement metal fittings after obtaining the effect, but in the case of existing buildings, the entire building must be lifted from the land, Construction was difficult. Moreover, even in the event of the Great Hanshin Earthquake in January 1995, most of the damaged houses were wooden houses that were several years old, and how to prevent such buildings from being damaged could reduce the damage caused by the earthquake. It affects what you can do.

Therefore, the present invention prevents damage to a building as much as possible by absorbing such a force even when a force due to vibration acts on the building. Another object of the present invention is to provide a building vibration control device which can be easily installed and has a simple structure, and can be provided at a low cost without increasing the size.

[0006]

According to the present invention, there is provided a vertical rod, a horizontal rod provided orthogonally to the vertical rod, and an oblique angle substantially equal to the horizontal rod and the vertical rod. Elastic member, a first link member provided between the elastic member and the vertical rod, and a second link member provided between the elastic member and the horizontal rod. Features.

Further, the present invention is characterized in that the second link member has one end swingably provided on the horizontal rod, and the other end provided movably in the longitudinal direction of the elastic member.

Further, according to the present invention, a driving device is provided between the second link member and the elastic member for moving the second link member in the longitudinal direction of the elastic member by bending the elastic member. It is characterized by.

Further, the present invention is characterized in that the driving device is a hydraulic cylinder mechanism. Further, the present invention is characterized in that a rolling member for smoothly moving the second link member with respect to the elastic material is provided between the second link member and the elastic material.

[0010]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic view showing a state in which the building vibration control device of the present invention is attached to a house. In the figure, reference numeral 1 denotes a vertical rod formed of an L-shaped steel, and a horizontal rod 2 also formed of an L-shaped steel is provided at one end of the vertical rod 1 at a right angle. One end of the elastic member 3 is fixed at the same position as the fixed ends of the vertical rod 1 and the horizontal rod 2 so that the vertical rod 1 and the horizontal rod 2 are respectively about 45 °. The elastic member 3 is formed of a flat plate made of spring steel. Further, one end of a link 4 formed in the shape of a rectangular tube is fixed to the end 2a of the horizontal rod 2 so as to have rigidity. The other end of the link 4 is fixed to an appropriate position of the elastic member 3. This fixed position
The OCA is set to be about 90 °. Further, a link 5 is provided between the vertical rod 1 and the elastic member 3, and the condition of the attachment position of the link 5 is set so that the ODB is about 90 ° and the length of the OD is Is set to be about の of the length of the OC.
In this way, the building vibration control device 6 is configured.

Note that the installation position conditions of the links 4 and 5 are exemplarily shown as an embodiment, and the present invention is not limited to this. Then, the vertical rod 1 of the building damping device 6 is fixed to the column 7 and the horizontal bar 2 is fixed to the beam 8, thereby completing the installation of the building damping device 6 on the house 9.
In FIG. 1, the structure of the building vibration control device 6 is disclosed to the house 9 so that the structure of the building vibration control device 6 becomes clear. Is changed as appropriate,
It can be adjusted. Further, regarding the installation position of the building vibration control device 6 with respect to the house 9, in consideration that the direction of the vibration due to the earthquake is not limited to one direction, the direction of the vibration is equally divided with respect to one column 7. It is thought that by installing a plurality (three or more) radially so as to achieve a more reliable effect on vibration control, in reality, as shown in FIG. In addition, the effect of the vibration control can be sufficiently expected by installing in two directions on the pillar 7 at the four corners of the room. Also, considering that the columns of the house vibrate in conjunction with each other, the installation position may be determined by focusing on the structure of the entire house, and it is not always necessary to radially install each pillar, but the structure of the house to be installed It is sufficient to determine the installation position and the number of installation according to the above.

When the building vibration control device 6 is installed in this way, if an earthquake occurs and a horizontal vibration in FIG. 1 occurs, the column 7 moves to the right in the drawing. . Accordingly, the vertical rod 1 also swings clockwise with respect to the beam 8. Then, the link 5 pushes the elastic member 3 with a force F in the direction of arrow a in the figure. However, since the elastic member 3 is made of spring steel, the elastic member 3 bends to absorb the movement of the link 5 due to the force F, and the elastic member 3 is attenuated and vibrated by the span OC. As a result, the vibration of the house 9 due to the earthquake is attenuated.

FIG. 3 is a view schematically showing a house 9 provided with a second embodiment of the building vibration control device 6 according to the present invention. The same members as those in the above-described first embodiment are denoted by the same reference numerals, and detailed description is omitted. In this embodiment, one end of the elastic member 3 formed of a flat plate made of spring steel is held at the same position as the fixed ends of the vertical rod 1 and the horizontal rod 2 so as to be swingable. The horizontal rod 2 is provided with one end of a link 4 formed in the shape of a rectangular tube so as to be rigid so as to have rigidity. At the other end of the link 4, two rollers 10, 10 are rotatably provided at a fixed interval, and the tip of the elastic member 3 is positioned between the two rollers 10, 10. Have been. Further, stoppers 11, 11 for restricting the swing of the link 4 by contacting the roller 10 with the elastic member 3.
Is provided. The OFA is formed at an acute angle, and when the vertical rod 1 and the horizontal rod 2 are approximately 90 °, the roller 10
Are set so as to abut against the proximal end stopper 11 of the elastic member 3. Thus, the building vibration control device 6 according to the present embodiment is
Is composed.

It is assumed that an earthquake occurs when the building vibration control device 6 configured as described above is installed, and that a vibration in the left-right direction in FIG. 3 is generated. When the column 7 moves rightward in the figure, the vertical rod 1 also swings clockwise with respect to the beam 8. Then, the link 5 pushes the elastic member 3 with a certain force F in the direction of arrow a in the figure.
However, since the elastic member 3 is formed of spring steel, the elastic member 3 bends, so that the link 4 rotates clockwise around A, and the roller 10 attached to the link 4 3 comes into contact with the stopper 11 on the tip side. Therefore, the movement of the link 5 due to the force F is the span OE.
Causes the elastic member 3 to bend. Further, when the column 7 moves leftward in the drawing, the vertical rod 1 also swings counterclockwise with respect to the beam 8. Then, the link 5 pulls the elastic member 3 with a certain force F in the direction of the arrow b in the figure. Further, the elastic force caused by the bending of the elastic material 3 causes an arrow b
When the elastic member 3 moves in the direction, the link 4
, And the roller 10 attached to the link 4 abuts against the stopper 11 on the base end side of the elastic member 3. Therefore, for link 5, the span is OE.
, The rigidity of the elastic member 3 increases. That is, if the length of the span becomes short, the amount of bending becomes small, so that the inclination of the vertical
Is reduced, and as a result, the vibration is attenuated.

FIG. 4 is a view schematically showing a house 9 provided with a third embodiment of a building vibration control device 6 according to the present invention. The same members as those in the first and second embodiments are denoted by the same reference numerals, and the detailed description is omitted. In this embodiment, a hydraulic cylinder 12 of a hydraulic system as shown in FIG. 5 is interposed between the elastic member 3 and the link 4 of the second embodiment. Here, FIG. 5A is an enlarged view of a portion A in FIG.
(B) is a conceptual diagram of a hydraulic system. In FIG. 5A, the hydraulic cylinder 12 is placed on an extension of the link 5 in the longitudinal direction.
a is installed to detect the movement of the link 5 in the directions of arrows a and b in FIG. Further, a hydraulic cylinder 12b is installed in the swing direction of the link 4, and senses the swing of the link 4. Then, the hydraulic cylinder 12a and the hydraulic cylinder 12b
And are connected by a hydraulic cylinder 12c. That is, in FIG. 4, the link 4 is forcibly and surely swung according to the bending of the elastic member 3.

Then, it is assumed that an earthquake occurs when the building vibration control device 6 configured as described above is installed, and that a vibration in the left-right direction in FIG. 4 is generated. When the column 7 moves rightward in the drawing, the vertical rod 1 also swings clockwise with respect to the beam 8. Then, the link 5 pushes the elastic member 3 with a certain force F in the direction of arrow a in the figure.
However, since the elastic member 3 is formed of spring steel, the elastic member 3 bends. The hydraulic cylinder 12a operates simultaneously with the bending of the elastic member 3, and the hydraulic cylinder 12b operates via the hydraulic communication pipe 12c. Therefore, link 4 is set to A
Is forcibly rotated in the clockwise direction around the center. Then, the roller 10 attached to the link 4 comes into contact with the stopper 11 on the distal end side of the elastic member 3, and the movement of the link 5 by the force F causes the elastic member 3 to bend in the span OE. Further, when the column 7 moves to the left in the drawing, the base 1 also swings counterclockwise with respect to the beam 8. Then, the link 5 moves the elastic member 3 in the direction of the arrow b in the figure,
It will be pulled with a certain force F. This time, the hydraulic cylinder 12 operates in a direction opposite to the previous direction, and the link 4 is forcibly rotated counterclockwise about A. Then link 4
The roller 10 attached to the elastic member 3 abuts against the stopper 11 on the base end side of the elastic member 3, and the link 5 changes from the span OE to the OF short so that the rigidity of the elastic member 3 increases. In other words, if the length of the span becomes short, the amount of bending becomes short, so that the inclination of the vertical rod 1 vibrates so that the bending of the elastic member 3 becomes small each time the vibration is vibrated. As a result, the vibration is attenuated. In addition, the hydraulic cylinder 12
Since the link 4 is surely rotated via the shaft, the vibration damping effect due to the damping can be expected more reliably.

FIG. 6 is a block diagram showing another embodiment of the hydraulic system used in the third embodiment. In this embodiment, an accumulator 13 is installed in a hydraulic system. And
An on-off valve 14 is provided between the accumulator 13 and the hydraulic communication pipe 12c, and an on-off valve 16 is provided in the middle of the hydraulic connection pipe 12c on the hydraulic cylinder 12b side. Further, stoppers 11 provided on the elastic member 3,
11 is provided with limit switches 15, 15 and a differential pressure gauge 19 for measuring the pressure difference between the hydraulic cylinders 12a, 12b. A signal discriminator 20 for determining whether the limit switch 15 has been switched ON / OFF or whether the differential pressure has exceeded a specified value.
Thus, the on-off valves 14 and 16 are configured to be opened and closed.

FIG. 7 is a block diagram showing the open / close state of the on-off valves 14 and 16. In FIG. 7, the hydraulic cylinder 1
The pressures 2a and 12b are input into the differential pressure gauge 19, and the differential pressure detected here is input into two comparators 21 and 21. The high-pressure reference value and the low-pressure reference value are input to the comparators in advance, and are compared with these reference values. The comparison result here is input into the OR circuit 22, and a signal is input to the AND circuit 23 when the comparison result by one of the comparators 21 exceeds a reference value. Also,
A base end side limit switch 15 and a front end side limit switch 15 are connected to the AND circuit 23, and a signal is input to the AND circuit 23 when the limit switch 15 is turned on. Then, in the AND circuit 23, the OR
When a signal from the circuit 22 and a signal from the limit switch 15 are received, a current flows through the relay 24 and the on-off valve 1
It is configured such that the open / close switching of 4, 16 is performed.

That is, in a series of embodiments, the pressure of the hydraulic cylinder 12a rises, the differential pressure value with respect to the hydraulic cylinder 12b becomes larger than a specified value, and the roller 10 (FIG. 15 is O
When N is applied, the link 4 is basically in a state in which further swing is restricted, and it is desired that no force acts on the link 4. Therefore, the on-off valve 14 is in the open state,
6 is closed, so that the movement of the input side hydraulic cylinder 12a does not act on the output side hydraulic cylinder 12b, but acts on the accumulator 13. This allows
The movement of the link 4 by the hydraulic cylinder 12 is stopped, and it is possible to prevent an extra force from being applied to the link 4.

On the other hand, when the roller 10 (FIG. 4) does not touch the limit switch 15, the hydraulic cylinder 12
a, regardless of the pressure difference between the hydraulic cylinder 12b and the specified value, the limit switch 15 is in the OFF state, the link 4 is in a swingable state, and the link 4 is forcibly moved by the bending of the elastic material 3. There is a need. Therefore, the on-off valve 14 is in the closed state and the on-off valve 16 is in the open state, and the movement of the input-side hydraulic cylinder 12a acts on the output-side hydraulic cylinder 12b, and does not act on the accumulator 13; 4 is configured to be forcibly and surely moved.

In each of the above-described embodiments, the example in which the building vibration control device 6 is installed between the column 7 and the beam 8 has been described, but the installation position is not limited to this. Instead, as shown in FIG. 8, the building vibration control device 6 of each embodiment described above may be provided between the column 7 and the beam 17. In this case, there is an advantage that the building vibration control device 6 is not particularly noticeable, the appearance is not impaired, the frontage of the entrance is not narrowed, and the position of the entrance is not restricted.

The building damping device 6 according to the present invention is not an absolute device, but the device can be absolutely prevented from being damaged in any case simply by attaching the device. However, compared to the case where this device is not installed, the vibration can be damped earlier, and the influence of the vibration on the house can be reduced.

[0023]

As described above, according to the present invention, even when a house or the like vibrates due to an earthquake, the vibration can be reliably attenuated, and the damage to the house can be reduced. In other words, when there was a vibration under the same conditions (for example, the age of the building, the magnitude of the earthquake, etc.), when the building vibration damping device of the present invention was mounted, it was not mounted even if it was not damaged. In that case, it may be damaged. In addition, the building damping device can of course be easily installed in the case of a new building, but can also be easily installed in a used building that has already been built. In addition, the structure of the building vibration control device is simple, the manufacturing cost is low, and it can be provided to the market.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a state in which a building vibration control device of the present invention is attached to a house.

FIG. 2 is a schematic view showing an attached state of a building vibration control device according to the present invention.

FIG. 3 is a schematic view of a house provided with a building damping device according to a second embodiment of the present invention.

FIG. 4 is a schematic view of a house provided with a third embodiment of a building vibration control device according to the present invention.

FIG. 5 is a configuration diagram showing an embodiment of a hydraulic system used in a third embodiment of the building vibration damping device according to the present invention.

FIG. 6 is a configuration diagram showing another embodiment of the hydraulic system used in the third embodiment of the building vibration damping device according to the present invention.

FIG. 7 is a block diagram showing an open / closed state of an on-off valve.

FIG. 8 is another schematic diagram showing a state in which the building vibration damping device of the present invention is attached to a house.

FIG. 9 is a diagram showing a state in which a brace conventionally used generally for maintaining strength is inserted.

FIG. 10 is a diagram showing the relationship between the amount of displacement due to vibration and its force.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vertical rod 2 ... Horizontal rod 3 ... Elastic material 4 ... Link 5 ... Link 6 ... Building vibration control device 10 ... Roller 11 ... Stopper 12 ... Hydraulic cylinder

Claims (5)

[Claims] 1. A vertical rod, a horizontal rod provided orthogonally to the vertical rod, an elastic member provided at an angle substantially equal to the horizontal rod and the vertical rod, and an elastic member provided A first link member provided between the elastic member and the horizontal rod, and a second link member provided between the elastic member and the horizontal rod. . 2. The second link member according to claim 1, wherein one end of the second link member is swingably provided on the horizontal rod, and the other end is provided so as to be movable in a longitudinal direction of the elastic member. Building vibration control device. 3. A driving device for moving the second link member in the longitudinal direction of the elastic member by bending the elastic member between the second link member and the elastic member. The building vibration control device according to claim 2. 4. The building vibration control device according to claim 3, wherein the drive device is a hydraulic cylinder mechanism. 5. A rolling member for smoothly moving the second link member with respect to the elastic member is provided between the second link member and the elastic member. A building vibration control device according to any one of claims 1 to 4.