JP2008121347A - Aseismic device, and aseismic structure of building using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismic device and an seismic structure of a building using it by which relative positional displacement of a pair of mutually parallel members constituting a skeleton of the building is converted to a rotational movement so that a large aseismic control force can be obtained. <P>SOLUTION: The aseismic device including a fixed plate 7 having a mounting member 7a for mounting the device on one of the pair of mutually parallel horizontal members 6, 6 constituting the skeleton of the building, a circular elastic body 9 one side surface of which is fixed to a plate surface of the fixed plate 7, a rotating plate 10 fitted to the other side surface of the elastic body 9 and connected to the fixed plate 7 by a connector 13 in a manner of being rotatable around a central axial line of the elastic body 9, and a mounting member 8a for mounting the device on the other horizontal member 6 comprises a bracket 8 interlocked to an eccentric part of the rotating plate 10 by an interlocking means 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibration control device that converts a displacement of two parallel members constituting a building frame into a rotational motion to suppress vibration during an earthquake, etc., and vibration control of a building using the same Concerning structure.

One of the prior arts for introducing a vibration control structure to a building frame of a woodwork frame structure is a vibration control damper described in Patent Document 1. This seismic damper is composed of a pair of steel plates fixed to two members joined to each other at the joint of a woodworking frame, with viscoelastic materials sandwiched between them, such as during an earthquake. Furthermore, when the included angle of the two members joined to each other at the joint changes, the steel plates fixed to them tend to move relative to each other, and the viscoelastic body sandwiched between the steel plates at that time The vibration is controlled by the resistance at the time of elastic deformation, and the vibration is suppressed by the early damping effect.
JP 2001-295506 A

  However, in the event of an earthquake or the like, the range in which the depression angle of the two members of the joint portion fluctuates is very small, and both the steel plates are disposed close to the joint portion, so the viscoelastic body at that time It is difficult to expect that sufficient damping force will be obtained by the resistance force caused by elastic deformation. Therefore, many seismic control devices must be used, and the assembling work becomes complicated.

  Also, most of the steel plates are fixed to the outside of the horizontal and vertical members in the vicinity of the joint, so even if the interior is a large wall structure, subsequent work such as mating with wall materials is troublesome. Become.

  In view of the above-mentioned problems of the conventional technology, the present invention converts a relative positional shift between a pair of parallel members constituting a building frame into a rotational motion, thereby providing a large damping force. The object is to provide a vibration control device and a vibration control structure for a building using the vibration control device.

  The present invention is also capable of knowing the magnitude of vibrations such as earthquakes, and enabling smooth interior construction of the housing after mounting the damping device, and the damping structure of a building using the damping device. The other purpose is to provide.

According to the present invention, the above problem is solved as follows.
(1) A fixing plate having an attachment piece for attaching the vibration control device to one member of a pair of parallel members constituting the housing of the building, and one side surface stopped on the plate surface of the fixing plate A ring-shaped or arc-shaped elastic body that is attached, and a rotation that is fixed to the other side surface of the elastic body and that is connected to the fixing plate with a connector so as to be rotatable around the center of curvature of the elastic body. A plate and a bracket having an attachment piece for attachment to the other member of the pair of parallel members and linked to the eccentric portion of the rotating plate by linkage means are provided.

  (2) In the above item (1), unevenness that engages with the elastic body is provided on the surface of at least one of the fixed plate and the rotating plate that faces the elastic body.

  (3) In the above item (1) or (2), a plurality of annular elastic bodies having different diameters are concentrically arranged between the fixed plate and the rotating plate.

  (4) In any of the above items (1) to (3), a pointer indicating the maximum rotation angle of the rotation plate with respect to the fixed plate is provided on the connector.

  (5) The vibration control structure of the building, the mounting piece of the fixed plate in the vibration control device according to any one of the above items (1) to (3), the opposing surfaces of the pair of upper and lower horizontal members constituting the building frame It is assumed that the bracket mounting piece is fixed to either one and the other horizontal member is opposed to the other surface.

According to the first aspect of the present invention, when a displacement in a direction perpendicular to the central axis of the elastic body occurs between a pair of parallel members constituting the building frame during an earthquake or the like, The reaction force or resistance force of elastic deformation of the elastic body at that time becomes a seismic control force, and the housing can be controlled.
When a building is shaken during an earthquake, the relative displacement of a pair of parallel members that make up the enclosure increases in proportion to the distance between the two members. By increasing the distance, the rotation angle of the rotating plate with respect to the fixed plate can be increased to increase the damping force, and with one damping device, sufficient damping force can be obtained. The vibration can be effectively damped.

  According to invention of Claim 2, the slip between at least any one of a fixed plate and a rotation board, a rotation board, and an elastic body can be prevented reliably.

  According to the invention described in claim 3, since the plurality of annular elastic bodies having different diameters are concentrically arranged between the fixed plate and the rotating plate, a large vibration control force can be obtained. In addition, the most effective vibration control characteristics can be obtained by appropriately selecting the materials of the plurality of elastic bodies.

  According to the fourth aspect of the present invention, after the occurrence of an earthquake or the like, it is possible to easily know the magnitude of the vibration such as an earthquake at that time simply by looking at the pointer.

  According to the invention described in claim 5, since the vibration control device is attached between the opposing surfaces of the pair of upper and lower horizontal members constituting the building frame, the wall member and The interior construction can be carried out smoothly without causing any problems in connection.

1 to 5 show a first embodiment of the present invention.
FIG. 1 shows a state in which a vibration control device 1 according to the present invention is installed in a woodworking frame structure 2 of a large wall structure in a wooden building. The frame structure 2 is placed on a base 3. Connect the upper ends of a pair of left and right pillars 4 and 4 with an eaves 5 and divide the base 3 and eaves 5 into approximately 3 equal parts such as a pair of upper and lower body Horizontal members 6 and 6 are installed between the left and right support columns 4 and 4.

  In this embodiment, the vibration control device 1 is provided between a pair of upper and lower horizontal members 6, 6, but between the base 3 and the lower horizontal member 6, the upper horizontal member 6 and the eaves 5 Or may be provided in other parts of the housing. In addition, it is preferable that two or more vibration control devices 1 be arranged at right angles to each other on each of the two wall structures that are perpendicular to each other in plan view.

  As shown in FIGS. 2 to 4, the vibration control device 1 includes a metal vertical plate-like fixing plate 7 fixed to the center of the upper surface of the lower horizontal member 6, and a lower surface central portion of the upper horizontal member 6. A bracket 8 that is fixed, an annular (or arc-shaped) elastic body 9 that is fixed to the front surface of the fixing plate 7 with an adhesive or the like, and a vertical plate-shaped metal plate that has an oval shape when viewed from the front. And a rotating plate 10.

  The fixing plate 7 is fixed to the upper surface of the lower horizontal member 6 by screwing a horizontal mounting piece 7a provided at the lower end thereof with a fixing screw 11, and the bracket 8 is provided at the upper end thereof. The horizontal mounting piece 8 a is fixed to the lower surface of the upper horizontal member 6 by screwing with a fixing screw 11.

  The elastic body 9 has an annular shape having an outer diameter substantially equal to the diameter of the large-diameter portion of the rotating plate 10, and preferably a natural or artificial rubber having viscoelastic properties, or a ring-shaped steel plate in the thickness direction. It is good to form with vibration damping rubber laminated alternately.

  A shaft hole 10 a is provided at the center of the large diameter portion of the rotating plate 10, and a washer 12 is fitted around the shaft hole 10 a and the shaft hole 7 b provided at a substantially central position of the fixed plate 7. The bolt 13 is inserted, and on the back side of the fixed plate 7, the nut 14 is screwed and tightened to the rear end portion of the bolt 13 via the washer 12. While being sandwiched and pressed between the fixing plate 7 and the bolt 13 that coincides with the center axis of the elastic body 9 (the center of curvature when the elastic body 9 is arcuate), the fixing plate can be rotated. 7 is attached.

  As shown in FIG. 4, radial unevenness 10 b having a pattern corresponding to the shape of the elastic body 9 is engraved on the surface of the rear surface of the rotating plate 10 facing the elastic body 9 by press molding or the like. At the time of fastening, the unevenness 10 b is engaged with the front surface of the elastic body 9 so that the rotating plate 10 does not slip with respect to the elastic body 9.

  A long hole 10c that is long in the vertical direction is provided in the upper center of the rounded tip that is the tip of the rotating plate 10, and the long hole 10c and the shaft hole 8b provided in the lower center of the bracket 8 include A bolt 15 fitted with a washer 12 is inserted, and on the rear surface side of the bracket 8, a nut 14 is screwed and tightened to the rear end portion of the bolt 15 via the washer 12, whereby the front end of the rotating plate 10. The part is connected to the bracket 8.

  In this embodiment, a washer 12, a bolt 13, a nut 14 and the like form a connector for connecting the rotating plate 10 to the fixed plate 7 so that the rotating plate 10 can rotate around the central axis of the elastic body 9. A long hole 10c, a bolt 15, a nut 14, a washer 12, and the like provided in the plate 10 form linkage means for linking the eccentric portion of the rotating plate 10 and the bracket 9.

Next, the operation of the above configuration will be described.
In normal times, the vibration control device 1 functions as a reinforcing body in the plane of the frame structure 2, like a brace.
From this state, when a large horizontal force such as an earthquake acts on the frame structure 2, the upper and lower horizontal members 6 and 6 are greatly increased in the left-right direction as indicated by arrows in FIGS. 5 (a) and 5 (b). Misalignment. At this time, due to the left and right displacement between the fixed plate 7 and the bracket 8, the rotating plate 10 is relative to the fixed plate 7 with the bolt 13 as the rotation center and the bolt 15 as the tip portion as the action point. The elastic body 9 is elastically deformed in the left and right rotation directions. Due to the elastic resistance of the elastic body 9 at this time, deformation of the housing is suppressed to a minimum, and vibration energy at that time is absorbed by the elastic body 9 and quickly attenuated. Thereby, the shear failure of the pillars 4 and 4 and the shear failure of a joint part are prevented beforehand.

  FIG. 6 shows a second embodiment of the present invention. In the following description, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

  In FIG. 6, the second annular elastic body 20 is concentrically bonded and fixed to the front surface of the fixing plate 7 inside the annular elastic body 9, and is rotated by fastening the bolt 14 in the same manner as described above. It is pressed against the back surface of the plate 10. The second elastic body 20 is made of a material having rigidity higher than that of the elastic body 9 to which a large rotational moment is applied, that is, having a low viscosity, and corresponds to the rotational moment of the rotational plate 10.

According to this embodiment, a large seismic damping force can be obtained by the two elastic bodies 9, 20, the in-plane rigidity of the frame structure 2 can be increased, and the resistance to earthquakes can be increased.
Although not shown in the drawings, the same unevenness as the unevenness 10b in the first embodiment is formed on the rear surface of the rotating plate 10 in the surface contact with the second elastic body 20, and the engagement thereof is performed. Therefore, it is preferable that slip with the elastic body 20 can be prevented.

  FIG. 7 shows a third embodiment of the present invention. In FIG. 7, a pin 30 facing forward is projected above the shaft hole 8 b on the front surface of the bracket 8, and the pin 30 is sandwiched from the left and right at the front end of the rotating plate 10. The base end portions of the pair of pointers 31 and 31 are fastened together by bolts 13.

Each pointer 31 is made of a highly plastic metal such as copper or lead. When the rotating plate 10 is rotated with respect to the fixed plate 7 during an earthquake or the like, the base is integrated with the rotating plate 10. On the other hand, the tip portion is blocked by the pin 30 and is plastically deformed in the direction opposite to the rotation direction of the rotation plate 10 to indicate the maximum rotation angle of the rotation plate 10.
Therefore, after the occurrence of an earthquake or the like, it is possible to easily know the magnitude of the vibration such as an earthquake at that time simply by looking at the pointers 31 and 31.
After confirmation, both the hands 31 and 31 are plastically deformed and returned to the initial position where they abut against the pin 30 to prepare for the next earthquake or the like.

A scale indicating the maximum rotation angle of the rotation plate 10 is preferably attached to the front surface of the rotation plate 10 in correspondence with the hands 31 and 31.
Further, when the vibration control device 1 with the pointers 31 and 31 is provided in the housing, the window hole with the door on the wall surface so that the vibration control device 1, particularly the pointers 31 and 31 can be seen. It is good to provide.

The present invention is not limited to the above-described embodiments, and can be modified as follows, for example, without departing from the scope of the claims.
(1) The vibration control device 1 is attached between a pair of left and right columns 4 and 4 while being rotated 90 ° laterally.
(2) Adhere both side surfaces of the elastic body 9 to the fixed plate 7 and the rotating plate 10 with an adhesive. Alternatively, the fixing plate 7 is also provided with unevenness similar to the unevenness 10b on the rotating plate 10, and the fixing plate 7, the elastic body 9, and the rotating plate 10 are not bonded, and the bolts 13 are removed to simplify the mutual operation. So that it can be separated.
(3) When the positional deviation between the upper and lower horizontal members 6 and 6 reaches a predetermined limit value, the bolt 15 comes into contact with the upper end of the long hole 10c, and further rotation of the rotating plate 10 is prevented. As such, the length and position of the long hole 10c are determined. By doing so, the stopping power works just before the building falls, and the building can be prevented from collapsing.

It is a front view which shows the state which integrated the 1st Embodiment of the damping device of this invention in the woodwork frame structure. It is the II-II sectional view taken on the line of FIG. It is a disassembled perspective view of 1st Embodiment of a damping device. It is the perspective view which looked at the rotation board from diagonally backward. (a) (b) is explanatory drawing which shows the state at the time of an earthquake. It is a disassembled perspective view of 2nd Embodiment of the damping device of this invention. It is a perspective view of 3rd Embodiment of the damping device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Damping device 2 Frame structure 3 Base 4 Pillar 5 Elevated 6 Horizontal member 7 Fixed plate 7a mounting piece 7b shaft hole 8 Bracket 8a mounting piece 8b shaft hole 9, 20 Elastic body 10 Rotating plate 10a Shaft hole 10b Unevenness 10c long hole 11 fixing screw 12 washer 13 bolt (connector)
14 Nut 15 Bolt (linkage means)
30 pin 31 pointer

Claims (5)

  Of a pair of parallel members constituting the building body, a fixed plate having a mounting piece for mounting to one member, and an annular or arcuate shape having one side fixed to the plate surface of the fixed plate An elastic body, a rotation plate fixed to the other side surface of the elastic body, and capable of rotating around the center of curvature of the elastic body, and a pair of parallel plates connected to the fixed plate with a connector. A vibration control device comprising: a mounting piece for mounting to the other of the members; and a bracket linked to the eccentric portion of the rotating plate by linkage means.   The vibration control device according to claim 1, wherein a concavity and convexity engaging with the elastic body is provided on a surface facing the elastic body in at least one of the fixed plate and the rotating plate.   The damping device according to claim 1 or 2, wherein a plurality of annular elastic bodies having different diameters are concentrically arranged between the fixed plate and the rotating plate.   The vibration control device according to any one of claims 1 to 3, wherein the connector is provided with a pointer indicating a maximum rotation angle of the rotation plate with respect to the fixed plate.   The fixing piece of the fixed plate in the vibration damping device according to any one of claims 1 to 4 is fixed to any one of opposing surfaces of a pair of upper and lower horizontal members constituting a building body, and the other horizontal member Building damping structure, characterized in that bracket mounting pieces are fixed to the opposite surface of

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