JP6013971B2 - Suspension support structure for damping device - Google Patents

Description

  The present invention relates to a structure for supporting an end portion of a suspension member (for example, a wire) of a vibration control device that enables vibration control of a building that is shaken by an earthquake or strong wind.

  Conventionally, there is JP-A-2001-153177 as a technology in such a field. In the suspension support structure for a vibration control device described in this publication, a weight (mass body) is suspended from a slab or beam of a structure via a plurality of suspension members, and a damper has a damper. There has been disclosed a vibration control device that reduces vibrations of a structure that is provided in a continuous manner, and the vibration of the structure is converted into the amplitude of the weight, and the amplitude of the weight is absorbed by the damper. An eyebolt is embedded in the beam of the structure, and a ring-shaped hook provided on the upper end of the wire is hooked on the eyebolt. With such a rotation mechanism, the weight can be freely swung.

JP 2001-153177 A

  However, the above-described suspension support structure for the conventional vibration control device has the problem that the eye-bolt on the beam side and the hook on the wire side rub against each other due to the mass of the weight each time the weight swings, and wear each other. There is a point. When such wear occurs, uneven wear tends to occur on the eyebolts and hooks, which is disadvantageous in terms of durability. In addition, when the weight is swung, the rotation mechanism may become a resistance torque and affect the swing characteristics.

  An object of this invention is to provide the suspension material support structure of the damping device which does not require a rotation mechanism.

The present invention is the suspension material support structure of the vibration control device in which the upper end of the suspension material is attached to the support frame and the lower end of the suspension material is attached to the mass body.
A pressure receiving member through which the upper end of the suspension member passes is fixed to the support frame. A suspension member insertion hole extending in the vertical direction is formed in the pressure reception member, and a wall surface of the suspension member insertion hole extends downward. And the suspension member is deformed along the wall surface when the mass body shakes.

  In the suspension support structure of this seismic control device, the wall surface of the suspension member insertion hole of the pressure receiving member has a rotating body shape that gradually spreads downward, so every time the building is shaken by an earthquake or strong wind When the mass body swings, the upper end of the suspension member also swings. At this time, the suspension member is deformed along the wall surface of the suspension member insertion hole. And the contact area where a suspension material hits a wall surface becomes large, so that the amplitude of a mass body becomes large. That is, the contact area where the suspension material hits the wall surface can be increased or decreased according to the deflection force of the mass body. Thus, since the contact area can be changed in response to the shaking of the mass body, stress concentration is unlikely to occur in the suspension material, and thereby the suspension material is hardly cut. In addition, a member (for example, a bearing socket) that supports the vertical load of the suspension member does not move and does not move, and thus does not generate friction as in a wire hook. In addition, since there is no rotating part, resistance is not generated at the time of swinging, and the influence on the swing characteristics can be eliminated.

Moreover, the pressure receiving member is divided | segmented with the division surface extended in an up-down direction including a suspension material penetration hole.
If such a structure is employ | adopted, a pressure receiving member can be easily set to a suspension material in the state which suspended the suspension material on the support frame, and the improvement of workability | operativity of a pressure reception member can be aimed at. Further, the pressure receiving member can be easily removed from the suspension member, and the pressure receiving member can be replaced.

A case having an opening for inserting the pressure receiving member from below; and a drop-off preventing member for the pressure receiving member that is detachably attached to the end of the case on the opening side. ing.
By adopting such a configuration, the pressure receiving member can be taken out of the case by removing the drop-off preventing member from the case, so that even if the wall surface of the suspension material insertion hole of the pressure receiving member is worn out due to long-term use, The member itself can be exchanged and the pressure receiving member can be prevented from falling off.

  According to the present invention, it is possible to reduce the friction of the suspension support structure of the vibration control device and to reduce the resistance at the time of shaking.

It is a front view which shows one Embodiment of a damping device. It is sectional drawing which shows the suspension material support structure of the damping device which concerns on this invention. It is a perspective view which shows the pressure receiving member applied to a suspension material support structure. FIG. 4 is a cross-sectional view of FIG. 3. It is sectional drawing which shows the assembly procedure of a suspension material support structure. It is sectional drawing which shows the other example of a pressure receiving member. It is sectional drawing which shows the other example of a pressure receiving member.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a suspension material support structure for a vibration control device according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a vibration control device 1 that is installed on the roof of a building S and suppresses the shaking of the building S due to an earthquake or wind includes a weight (mass body) 3 suspended from a wire (hanging material) 2. A pendulum type TMD (Tuned Mass Damper) provided with an oil damper 4. In the vibration control device 1, the weight 3 performs a pendulum motion when the building S is shaken, and the vibration energy of the weight 3 is attenuated by the oil damper 4. Thereby, the vibration of the building S can be attenuated. The seismic control device 1 includes a support frame 5 including a column 5A extending upward from the building S and a beam 5B that bridges the upper end of the column 5A, and the weight 3 is a beam 5B of the support frame 5. Are suspended by a plurality of (in this case, four) wires 2 extending downward. The plurality of oil dampers 4 are installed so as to bridge between the side surface of the weight 3 and the side surface of the column 5A in the support frame 5, and both ends of the oil damper 4 are connected to the column 3A of the weight 3 and the support frame 5. Each is attached.

  As shown in FIGS. 2 to 4, in the structure 100 for supporting the wire 2 when the weight 3 swings, the upper end of the wire 2 is attached to the beam 5 </ b> B. In this attachment, the pressure receiving member 10 is used. The pressure receiving member 10 is formed with a suspension material insertion hole 11 through which the upper end of the wire 2 penetrates. A wall surface 11a forming the suspension material insertion hole 11 extends in the vertical direction and gradually decreases downward. It has an arcuate rotating body shape that expands. When the weight 3 swings, the wire 2 is deformed along the wall surface 11a.

  The pressure receiving member 10 has a cylindrical shape made of resin or metal, and is divided by a dividing surface 10b including the suspension material insertion hole 11 and extending in the vertical direction. In other words, the pressure receiving member 10 includes the first pressure receiving half 10A and the second pressure receiving half 10B. When such a configuration is adopted, the first pressure receiving half 10A and the second pressure receiving half 10B are aligned at the dividing surface 10b in a state where the wire 2 is suspended from the beam 5B of the support frame 5, The wire 2 can be set in the hanging material insertion hole 11. In such an operation, the pressure receiving member 10 can be easily attached to the wire 2, and the workability of attaching the pressure receiving member 10 is improved. Further, the pressure receiving member 10 can be replaced while the wire 2 is suspended.

  Such a pressure receiving member 10 is accommodated in the case 12. The case 12 is fixed to the lower surface of the beam 5B of the support frame 5, and has a cylindrical case body 13 having an opening 12a (see FIG. 5A) into which the pressure receiving member 10 is inserted from below, The flange portion 14 is disposed at the upper end and abuts against the lower surface of the beam 5B, and has an opening 12b through which the bearing socket 17 can be inserted.

  Further, a detachable pressure-receiving member drop prevention member 16 that closes the opening 12 a formed in the case body 13 is attached to the lower end of the case body 13. The drop-off preventing member 16 may be a ring-shaped member or a plurality of claw-shaped members as long as the member protrudes inward from the lower end of the case body 13. In addition, when the dropout prevention member 16 is ring-shaped, it is divided for easy attachment / detachment. When such a configuration is employed, the pressure receiving member 10 can be taken out from the opening 12a of the case 12 by removing the screw 25 from the case 12 and removing the dropout prevention member 16. Thereby, even when the wall surface 11a of the suspension material insertion hole 11 in the pressure receiving member 1 is worn out due to long-term use, the pressure receiving member 10 itself can be replaced.

  A support socket 17 is fixed to the upper end of the wire 2, and the support socket 17 can pass through the through hole 5 </ b> S formed in the beam 5 </ b> B from below. The flange portion 18 fixed to the upper surface of the beam 5B via the screw 19 is held on the upper side of the beam 5B.

  In the suspension material support structure 100 of the vibration control device 1, the wall surface 11 a of the suspension material insertion hole 11 of the pressure receiving member 10 has a rotating body shape that gradually spreads downward. When the weight (mass body) 3 swings whenever the building swings, the upper end of the wire (suspending material) 2 also swings. At this time, the wire 2 is deformed along the wall surface 11 a of the suspension member insertion hole 11. The contact area where the wire 2 hits the wall surface 11a increases as the amplitude of the weight 3 increases. That is, the contact area where the wire 2 hits the wall surface 11a can be increased or decreased according to the deflection force of the weight (mass body) 3. As described above, since the contact area can be changed in accordance with the swing of the weight 3, it is difficult for stress concentration to occur in the wire 2, and thereby the wire 2 is difficult to break. Further, the member (supporting socket 17) that supports the vertical load of the suspension member 2 does not move and does not move, and therefore does not generate friction like a wire hook. In addition, since there is no rotating part, resistance is not generated at the time of swinging, and the influence on the swing characteristics can be eliminated.

  Next, the assembly procedure of the suspension material support structure 100 of the vibration control device 1 according to the present invention will be briefly described.

  As shown in FIG. 5A, the flange portion 14 of the case 12 is screwed with the screw 26 so that the opening 12b at the upper end of the case body 13 matches the through hole 5S formed in the beam 5B. Secure to. Thereafter, as shown in FIG. 5B, the bearing socket 17 of the wire 2 is inserted into the through hole 5S of the beam 5B from below. Then, as shown in FIG. 5 (c), the wire 2 is passed through a slit (not shown) extending in the radial direction from the through hole 18a formed in the center of the disc-shaped flange portion 18, A flange portion 18 is disposed between the bearing socket 17 and the beam 5B, thereby preventing the bearing socket 17 from falling off. The flange portion 18 is fixed to the beam 5B by screws 19.

  After that, as shown in FIG. 5D, the wire 2 is inserted into the suspension material insertion hole 11 so that the first pressure receiving half 10A and the second pressure receiving half 10B are aligned with each other at the dividing surface 10b. The pressure receiving member 10 is loaded into the case body 13 while moving the pressure receiving member 10 upward along the wire 2 while maintaining the state. Then, as shown in FIG. 5 (e) and FIG. 2, the drop-off prevention member 16 is disposed so as to close the opening 10 a formed in the case body 13, and the drop-off prevention member 16 is placed on the lower end surface of the case body 13. Secure with screws 25.

  The present invention is not limited to the above-described embodiment, and various modifications as described below are possible without departing from the gist of the present invention.

  For example, as shown in FIG. 6, as another pressure receiving member 20, the wall surface 21 a of the hanging material insertion hole 21 may have a perfect circular rotating body shape. Further, as shown in FIG. 7, as another pressure receiving member 22, the wall surface 23 a of the suspension member insertion hole 23 includes upper and lower curved surfaces A <b> 1 and A <b> 2, and a plane B disposed between the curved surfaces A <b> 1 and A <b> 2. May be formed. In this case, at the boundary between the curved surfaces A1, A2 and the plane B, the plane B is a tangential plane with respect to the curved surfaces A1, A2.

  The suspension member 2 is not limited to a wire in its entire length, and may be a rod at the middle or at both ends.

  As shown in FIG. 1, the suspension material support structure 100 can also be applied to the holding frame 3 a of the weight 3.

  The pressure receiving member is not limited to two, and may be three or more.

  DESCRIPTION OF SYMBOLS 100 ... Suspension material support structure 1 ... Damping device 2 ... Wire (suspending material) 3 ... Weight (mass body) 5 ... Support frame 5B ... Beam 5S ... Through-hole 10 ... Pressure receiving member 10A, 10B ... Pressure receiving half 10a ... Opening Part 10b ... Dividing surface 11 ... Hanging material insertion hole 11a ... Wall surface 12 ... Case 12a ... Opening part 13 ... Case main body 13b ... Upper end opening part 14 ... Flange part 16 ... Drop-off prevention member 17 ... Bearing socket 18 ... Flange part 18a ... Through hole 20 ... Pressure receiving member 21 ... Hanging material insertion hole 21a ... Wall surface 22 ... Pressure receiving member 23 ... Hanging material insertion hole 23a ... Wall surface

Claims (3)

In the suspension support structure of the vibration control device in which the upper end of the wire is attached to the support frame and the lower end of the wire is attached to the mass body,
A pressure receiving member through which the upper end of the wire penetrates is fixed to the support frame, and a suspension member insertion hole extending in the vertical direction is formed in the pressure reception member, and a wall surface of the suspension member insertion hole extends downward. A suspension material support structure for a vibration control device, having a rotating body shape that gradually spreads as it goes, wherein the wire deforms along the wall surface when the mass body shakes.   The suspension member supporting structure for a vibration control device according to claim 1, wherein the pressure receiving member is divided with a dividing surface including a suspension member insertion hole and extending in a vertical direction. A case fixed to the support frame and having an opening for inserting the pressure receiving member from below; a drop-off preventing member for the pressure receiving member detachably attached to an end of the case on the opening side; The suspension material support structure for a vibration damping device according to claim 1 or 2, wherein

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