JP2006336208A - Vibration control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure a sufficient vibration control capacity only by equipping a building with a smaller number of improved vibration control devices which transfer horizontal relative displacement between upside and downside beams, associated with the deformation of a vertical plane of a structure, to a damper arranged in the vertical plane of the structure of a column-beam skeleton. <P>SOLUTION: This vibration control device 10 is equipped with an oil damper 18 and a relative-displacement amplification and transfer mechanism, which are arranged in the vertical plane of the structure of the column-beam skeleton. The relative-displacement amplification and transfer mechanism is used for amplifying horizontal relative displacement (story deformation) between the upside beam and downside beams, associated with the deformation of the vertical plane of the structure, so as to transfer the horizontal relative displacement to the oil damper. The relative-displacement amplification and transfer mechanism is equipped with a connecting structure 20, the upper end of which is fixedly joined to the side of the upside beam and the lower end of which has a pin joining part, and a lever member 22, one end of which is pin-joined to the side of the downside beam, the other end of which is pin-joined to one end of the oil damper and the intermediate part of which is pin-joined to the pin joining part of the connecting structure. The other end of the oil damper is pin-joined to the side of the downside beam. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vibration damping device, and more particularly to a vibration damping device in which a damper is disposed in a vertical construction surface of a column beam frame.

As a vibration control device to reduce the shaking of buildings due to earthquakes and winds, the vertical structure of the column beam frame composed of the upper beam, the lower beam, and the columns joined to the upper and lower beams There is a vibration damping device in which a damper is disposed therein and a relative displacement in the horizontal direction between the upper beam and the lower beam accompanying the deformation of the vertical structural surface is transmitted to the damper. Many damping devices of this type have been proposed in the past, and one example is a damping device described in Japanese Patent Application Laid-Open No. 2004-218207. The vibration damping device of the same publication is such that both ends of a damper are connected to two beam-column joints located on the diagonal of the vertical surface.
JP 2004-218207 A

  As another example of this type of conventional vibration damping device, there is a vibration damping device already designed by the present applicant, which is shown in FIG. 3, the vibration damping device 50 includes an oil damper 58. The oil damper 58 includes an upper beam 52, a lower beam 54, and columns 56a and 56b joined to the upper beam 52 and the lower beam 54. Are arranged in the vertical plane of the column beam frame. The vibration damping device 50 further includes a connection structure for transmitting the horizontal relative displacement between the upper beam 52 and the lower beam 54 accompanying the deformation of the vertical structure to the oil damper 58, and this connection structure. Is composed of a pair of brace-like members 60a and 60b extending in an inclined manner and a connecting member 62 fixedly joined to the lower ends of the brace-like members 60a and 60b. The upper ends of the pair of brace members 60a and 60b are fixedly joined to the joint between the upper beam 52 and the columns 56a and 56b. The oil damper 58 has an end portion on the cylinder side pin-connected to a bracket 66 attached to a support member 64 fixedly joined to the lower beam 54, and an end portion on the piston rod side connected to the oil damper 58. Pin-joined to a bracket 68 attached to the member 62.

  When horizontal shear deformation occurs in the building due to an earthquake or wind, the horizontal relative displacement (hereinafter referred to as “interlayer deformation”) between the upper beam 52 and the lower beam 54 accompanying the deformation of the vertical structural surface is caused. Then, the oil is transmitted to the oil damper 58 through a connecting structure including the brace-like members 60a and 60b and the connecting member 62. The amount of movement of the piston with respect to the cylinder in the oil damper 58 is almost the same as that of the interlayer deformation. More strictly, the amount of movement of the piston is smaller than that of the interlayer deformation by the elastic deformation of the connecting structure caused by the reaction force of the oil damper 58. It becomes.

  The damping capacity of the oil damper 58 has a magnitude corresponding to the amount of movement of the piston relative to the cylinder. However, in the conventional vibration damping device 50 shown in FIG. 3, the movement amount of the piston with respect to the cylinder is as large as the interlayer deformation, and therefore, the movement amount is relatively small. For this reason, if a large damping capacity is to be obtained, it is necessary to make the damper of the vibration control device large or install a lot of vibration control devices in the building. It is disadvantageous in plan.

  The present invention has been made in view of such circumstances, and an object of the present invention is to use a conventional vibration damping device in a vibration damping device in which a damper is disposed in the vertical construction surface of a column beam frame. Compared to the above, it is possible to secure a sufficient vibration control capability by using a vibration control device using a smaller damper or by installing a smaller number of vibration control devices in a building.

  In order to achieve such an object, the vibration damping device according to the present invention includes a vertical beam plane of a column beam frame defined by an upper beam, a lower beam, and a column joined to the upper beam and the lower beam. In the vibration damping device, in which a damper is disposed therein and a horizontal relative displacement between the upper beam and the lower beam accompanying the deformation of the vertical structural surface is transmitted to the damper. A connection structure that is fixedly joined to the upper beam side and has a pin joint at the lower end, and one end is pin joined to the lower beam, and the other end is pin joined to one end of the damper, A lever member pin-bonded to the pin joint portion of the connection structure, and the other end of the damper is pin-joined to the lower beam side. The relative displacement in the horizontal direction between the upper beam and the lower beam accompanying the deformation of Characterized by being adapted to transmit the path.

  In the vibration damping device according to the present invention, a damper is arranged in a vertical structure of a column beam frame defined by an upper beam, a lower beam, and a column joined to the upper beam and the lower beam. And a vibration damping device configured to transmit a horizontal relative displacement between the upper beam and the lower beam accompanying the deformation of the vertical structural surface to the damper. A connecting structure fixedly joined to the side and having a pin joint at the upper end, one end is pin joined to the upper beam side, the other end is pin joined to one end of the damper, and an intermediate part is the connection A lever member that is pin-bonded to the pin joint portion of the structure, and the other end of the damper is pin-joined to the upper beam side. Amplify the horizontal relative displacement between the beam and the lower beam and transmit it to the damper Characterized in that was.

  According to the vibration damping device of the present invention, the lever member is used to amplify and transmit the horizontal relative displacement between the upper beam and the lower beam accompanying the deformation of the vertical structural surface to the damper. The interlayer deformation generated by the external force acting on the building is amplified and transmitted to the damper. Therefore, compared with the case of using a conventional vibration control device, sufficient vibration control capability can be ensured by using a vibration control device with a smaller damper and by installing a smaller number of vibration control devices in the building. The effect that it can be obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing a vibration damping device according to a preferred embodiment of the present invention, and FIG. 2 is a diagram showing an operating state of the vibration damping device of FIG.

  In FIG. 1, a vibration damping device 10 is a device for absorbing and suppressing vibration generated by an external force such as an earthquake or a wind acting on a building having a column beam frame, and includes an upper beam 12 and a lower beam. 14 and an oil damper 18 is arranged in a vertical frame of a column beam frame defined by columns 16a and 16b joined to the upper beam 12 and the lower beam 14. The vibration damping device 10 further has a horizontal relative displacement (hereinafter referred to as “horizontal displacement”) between the upper beam 12 and the lower beam 14 accompanying the deformation of the vertical surface when an external force acts on the building and the vertical surface is deformed. , Referred to as “interlayer deformation”) and a relative displacement amplification transmission mechanism for transmitting to the oil damper 18 is also provided, and this relative displacement transmission mechanism is also disposed in the vertical plane.

  As shown in FIG. 1, the relative displacement amplification transmission mechanism includes a connection structure 20 and a lever member 22. The connection structure 20 has an upper end fixedly joined to the upper beam 12 side and a pin joint at the lower end. One end portion of the lever member 22 is pin-joined to the lower beam 14 side, the other end portion is pin-joined to one end of the oil damper 18, and an intermediate portion is pin-joined to the pin joint portion of the connection structure. .

  More specifically, the connecting structure 20 includes a pair of brace members 24a and 24b and a connecting member 26 fixedly joined to the lower ends of the brace members 24a and 24b. The upper ends of 24a and 24b are fixedly joined to the joint portion between the upper beam 12 and the columns 16a and 16b, and extend at an inclination. Note that the upper ends of the brace members 24a and 24b may be fixedly joined to arbitrary portions on the upper beam 12 side, for example, may be fixedly joined to the upper beam 12, or the upper beam 12 and the columns 16a, You may fix-join to pillar 16a, 16b in the vicinity of a junction part with 16b. The connection member 26 includes a bracket 28 at one end thereof, and the pin joint provided on the bracket 28 constitutes the pin joint at the lower end of the connection structure 20 described above.

  A bracket 30 is fixedly joined to the upper surface of the lower beam 14, and the pin joint at the lower end of the lever member 22 is pin joined to the pin joint provided on the bracket 30, thereby lever member The lower end of 22 is pin-joined to the lower beam 14 side. As a result, the lever member 22 can swing within the vertical plane with the pin joint at the lower end thereof as the center. The bracket 30 may be fixedly joined to an arbitrary portion on the side of the lower beam 14, for example, may be fixedly joined to a joint portion between the lower beam 14 and the columns 16a and 16b. You may fix-join to pillar 16a, 16b in the vicinity of the junction part of the beam 14 and pillar 16a, 16b.

  The pin joint portion at the intermediate portion of the lever member 22 is pin joined to the pin joint portion of the bracket 28 attached to the lower end portion of the connection structure 20. Further, the pin joint portion at the upper end portion of the lever member 22 is pin joined to the end portion of the oil damper 18 on the piston rod side. The pin connection points of the upper end, lower end, and intermediate portion of the lever member 22 are positioned on a straight line, and the distance from the pin connection point of the lower end to the pin connection point of the upper end is determined by the pin at the lower end. This is α times (α> 1) the distance from the joint point to the intermediate pin joint point, and the lever mechanism of the vibration damping device 10 is configured as described above.

  A support member 34 to which a bracket 32 is attached is further fixedly joined to the upper surface of the lower beam 14. The cylinder-side end of the oil damper 18 is pin-bonded to the pin-joint portion of the bracket 32, whereby the cylinder-side end of the oil damper 18 is pin-bonded to the lower beam 14 side. Yes. Note that the bracket 32 and the support member 34 may be fixedly bonded to arbitrary portions on the lower beam 14 side, for example, may be fixedly bonded to the bonding portion between the lower beam 14 and the columns 16a and 16b. Alternatively, the lower beam 14 and the columns 16a and 16b may be fixedly joined to the columns 16a and 16b in the vicinity of the joint portion. As described above, the oil damper 18 is attached to the vertical construction surface in a posture extending substantially horizontally.

  FIG. 2 shows a situation where an interlayer deformation δ occurs in the column beam frame due to an external force such as an earthquake or wind. At this time, a relative displacement δ ′ in the horizontal direction is generated between the lower end portion of the connection structure 20 and the lower beam 14. The relative displacement δ ′ is amplified to α · δ ′ by the swinging lever member 22 and transmitted to the piston rod of the oil damper 18. At the same time, a horizontal force that is α times as large as the reaction force generated by the oil damper 18 acts on the lower end portion of the connecting structure 20 from the lever member 22. Because of the horizontal force, the brace members 24a and 24b of the connecting structure 20 are elastically deformed and bent, so that the relative displacement δ 'becomes smaller than the interlayer deformation δ by the amount of the elastic deformation. Further, when the lever member 22 swings, the swing locus of the pin joint point at the intermediate portion of the lever member 22 and the original (that is, the pin joint portion) of the pin joint portion at the lower end portion of the connecting structure 20 However, there is a slight deviation between the movement trajectory (which should have been followed if the lever member 22 was not pin-coupled), and this deviation of the movement trajectory is also caused by the elastic deformation of the brace members 24a and 24b. Is absorbed by. That is, when the interlayer deformation δ occurs, the brace members 24 a and 24 b of the connecting structure 20 are elastically deformed, so that the pin joint at the lower end of the connecting member 26 becomes the pin joint at the intermediate portion of the lever member 22. It moves according to the arcuate rocking locus.

  The present invention can also be implemented as an embodiment in which the above-described embodiment is turned upside down. That is, in the above-described embodiment, the connection structure 20 constituting the relative displacement amplification transmission mechanism has the upper end portion fixedly joined to the upper beam side and the pin lower end portion having the pin joint portion. . Similarly, the lever member 22 is one in which one end portion is pin-joined to the lower beam side, the other end portion is pin-joined to one end of the damper, and the intermediate portion is pin-joined to the pin joint portion of the connection structure. there were. Further, the other end of the damper 18 is pin-bonded to the lower beam side. Further, the connecting structure has a pair of brace-like members whose upper ends are fixedly joined to the upper beam side and extend in an inclined manner, and a joint having a pin joint portion fixedly joined to the lower ends of the pair of brace-like members. It consisted of parts. When the interlayer deformation occurs, the connecting structure is elastically deformed so that the pin joint portion of the connecting member moves according to the arcuate swing locus of the pin joint portion in the intermediate portion of the lever member. . On the other hand, when the above configuration is reversed upside down, the connection structure of the relative displacement amplification transmission mechanism has the lower end fixedly joined to the lower beam side and the upper end joined to the pin. It will have a part. The lever member has one end pin-connected to the upper beam side, the other end pin-bonded to one end of the damper, and an intermediate portion pin-connected to the pin joint portion of the connection structure. Further, the other end of the damper is pin-joined to the upper beam side. Further, the connecting structure in that case has a pair of brace-like members whose lower ends are fixedly joined to the lower beam side and extend in an inclined manner, and pins which are fixedly joined to the upper ends of the pair of brace-like members. And a connecting member having a joint. When interlayer deformation occurs, the connecting structure is elastically deformed, so that the pin joint portion of the connecting member moves according to the arcuate swing locus of the intermediate portion of the lever member.

  In the above-described embodiment, the oil damper 18 is used as the damper of the vibration damping device 10. However, the vibration damping device having the same configuration as that of the above-described embodiment using various dampers other than the oil damper. It is also possible to construct By appropriately setting the value of α of the lever member 22 in accordance with the type of the damper, it is possible to design a vibration damping device having excellent vibration damping performance.

  As is clear from the above description, according to the vibration damping device of the present invention, since the interlayer deformation generated by the external force acting on the building is amplified and transmitted to the damper, the conventional vibration damping device is used. As compared with the above, it is possible to obtain an effect that a sufficient damping capacity can be ensured by a damping device using a smaller damper and by installing a smaller number of damping devices in a building.

  In addition, a mechanism that amplifies the horizontal relative displacement between the upper beam and the lower beam due to the deformation of the vertical structural surface due to external force and transmits it to the damper is a connected structure that is fixedly joined to the upper beam or the lower beam And a lever member pin-bonded to the lower beam or the upper beam, the degree of amplification of the relative displacement between the upper and lower beams transmitted to the damper can be made substantially constant, which is excellent. Damping performance can be obtained.

It is the figure which showed the damping device which concerns on suitable embodiment of this invention. It is the figure which showed the operation state of the damping device of FIG. It is the figure which showed the conventional damping device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Damping device, 12 ... Upper side beam, 14 ... Lower side beam, 16a ... Column, 16b ... Column, 18 ... Oil damper, 20 ... Connection structure, 22 ... Lever member, 24a ...... Brace-like member, 24b ... Brace-like member, 26 ... Connecting member, 28 ... Bracket, 30 ... Bracket, 32 ... Bracket, 34 ... Support member.

Claims (4)

A damper is arranged in a vertical frame of a column beam frame defined by an upper beam, a lower beam, and a column joined to the upper beam and the lower beam, and the vertical beam is deformed. In the vibration damping device configured to transmit a horizontal relative displacement between the upper beam and the lower beam to the damper,
A connecting structure having an upper end fixedly joined to the side of the upper beam and a pin joint at the lower end;
One end portion is pin-joined to the lower beam side, the other end portion is pin-joined to one end of the damper, and an intermediate portion is provided with a lever member pin-joined to the pin joint portion of the connection structure,
The other end of the damper is pin-joined to the lower beam side,
By the above, the horizontal relative displacement between the upper beam and the lower beam accompanying the deformation of the vertical structural surface is amplified and transmitted to the damper.
A vibration damping device characterized by that. The connecting structure is
A pair of brace-like members whose upper ends are fixedly joined to the side of the upper beam and extend obliquely;
Including a connecting member fixedly joined to the lower ends of the pair of brace-shaped members and having the pin joint portion;
When the relative displacement in the horizontal direction occurs between the upper beam and the lower beam due to the deformation of the vertical structural surface, the connecting structure elastically deforms, whereby the pin joint portion of the connecting member Is moved according to an arcuate swing locus of the pin joint portion at the intermediate portion of the lever member.
The vibration damping device according to claim 1. A damper is disposed in a vertical frame of a column beam frame defined by an upper beam, a lower beam, and a column joined to the upper beam and the lower beam, and accompanying the deformation of the vertical beam In the vibration damping device configured to transmit a horizontal relative displacement between the upper beam and the lower beam to the damper,
A connecting structure having a lower end fixedly joined to the lower beam side and having a pin joint at the upper end;
One end portion is pin-joined to the upper beam side, the other end portion is pin-joined to one end of the damper, and an intermediate portion includes a lever member pin-joined to the pin joint portion of the connection structure,
The other end of the damper is pin-joined to the upper beam side,
By the above, the horizontal relative displacement between the upper beam and the lower beam accompanying the deformation of the vertical structural surface is amplified and transmitted to the damper.
A vibration damping device characterized by that. The connecting structure is
A pair of brace-like members whose lower ends are fixedly joined to the lower beam side and extend obliquely;
Including a connecting member fixedly joined to upper ends of the pair of brace-like members and having the pin joint portion;
When the relative displacement in the horizontal direction occurs between the upper beam and the lower beam due to the deformation of the vertical structural surface, the connecting structure elastically deforms, whereby the pin joint portion of the connecting member Is moved according to an arcuate swing locus of the pin joint portion at the intermediate portion of the lever member.
The vibration damping device according to claim 3.

Images