JP2010236197A - Vibration control frame by composite damper, construction method for the vibration control frame by the composite damper, and interval adjusting method for the vibration control frame by the composite damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure a clearance between a stopper pin and a pin hole constituting a damper for small amplitude after constructing a vibration control frame by a composite damper. <P>SOLUTION: This composite damper includes the damper 7 for small amplitude connected with a damper for large amplitude made of steel in series through an extension part 6. The damper 7 for small amplitude includes a pair of external plates 71, a plurality of internal plates 72, a viscous elastic body 73 mounted and nipped between the internal plates 72, and the stopper pin 75 mounted in the pin hole 76 passing through them in the direction for stacking them to be freely inserted and pulled in/out of the pin hole 76. The extension part 6 includes a pair of extension external plates 61 arranged at positions corresponding to the pair of external plates 71, a plurality of extension internal plates 62, a plurality of spacers 63 mounted and nipped between the extension internal plates 62 detachably, a lock mechanism R for regulating amplitude between the damper 7 for small amplitude and the extension part 6, and a lock release mechanism RK allowing amplitude between the damper 7 for small amplitude and the extension part 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vibration control frame using a composite damper, a method for constructing a vibration control frame using a composite damper, and a method for adjusting the interval of the vibration control frame using a composite damper, and belongs to the field of vibration control technology for buildings. Damping structure with composite damper that can reduce a wide range from large shaking of a building due to a large earthquake to small shaking of a building due to a small earthquake or strong wind, construction method and composite type of damping frame with a composite damper The present invention relates to a method for adjusting the interval of a vibration control frame using a damper.

  In recent years, the development of damping structures using composite dampers has been promoted with the aim of reducing the wide range of vibrations of buildings due to large earthquakes to small shakings of buildings due to small earthquakes and strong winds.

  Conventionally, as a vibration control structure using such a composite damper, a steel support frame material as a large-amplitude damper arranged in the frame surface of a building, and a small structure coupled in series to the support frame material are provided. What is comprised with the damping device as an amplitude damper is known (for example, patent document 1 etc.).

However, this vibration damping device is configured so that a plurality of two-way plates are alternately stacked and viscoelastic bodies are sandwiched between the plates, and vibration energy is absorbed by shear deformation of the viscoelastic bodies. In such a vibration damper with a composite damper, it is necessary to design the rigidity of the viscoelastic body in the vibration damping device, which is a damper for small amplitude, to be higher than the rigidity of the support frame to be plasticized, that is, the small amplitude Although the damper is a damper, the performance as a damping device is set by the rigidity at the time of maximum deformation and the vibration damping performance, so that the vibration damping effect at a small amplitude is reduced. In addition, if an elastic-plastic damper, a viscous damper, or a friction damper is used as a small-amplitude damper, the support frame cannot be plasticized even at a large amplitude, which makes it difficult to use these dampers. .

For this reason, there has been devised a damping structure using a composite damper in which a steel-based large-amplitude damper arranged in a brace and a small-amplitude damper coupled in series to the large-amplitude damper are combined. (For example, Patent Document 2 etc.)
According to such a vibration damper with a composite damper, the small-amplitude damper is not damaged due to excessive deformation even at large amplitude, and the large-amplitude at large amplitude due to deformation of the small-amplitude damper. Because there is no loss in the effect of the damper, the response of the structure due to a small earthquake or wind load (habitability level response or concrete crack level response) where the damper for large amplitude does not exert its effect The small-amplitude damper exerts a damping function to suppress the vibration, and the so-called response to the safety level of the structure during a so-called large earthquake, the large-amplitude damper exhibits a damping action due to its elastic-plastic effect. It has a damping effect. Further, even if the damping member of the small amplitude damper is damaged for some reason, the large amplitude damper is configured to exhibit the effect appropriately in the event of a large earthquake.

  In particular, in response to a large earthquake, the small-amplitude damper is fixed to a static state that does not exhibit damping performance by a stopper at a limited amplitude, and is damaged even in excessive deformation during a large amplitude. There is no risk of destruction, and the presence of the small-amplitude damper does not cause a loss in the operation effect (vibration suppression effect) of the large-amplitude damper.

  By the way, as a stopper for limiting the magnitude of the amplitude, a stopper pin that penetrates each resistance plate of the damper for small amplitude in the stacking direction is passed through a pin hole whose diameter is several mm larger than its outer diameter, Since the amplitude is limited to the gap between the diameter difference between the stopper pin and the pin hole, it is necessary to install the stopper pin with an accuracy of 1 mm.

  However, with this type of composite damper construction method, the accuracy when joining the pillars and beams of the building is on the level of 1 cm, so it is sufficient to install the stopper pin with a high precision level. Management was necessary. In addition, the weight of the building differs greatly before and after the floor slab is stretched. Even if the composite damper can be attached with high accuracy of 1 mm, if the floor slab is fixed to the building, the weight of the floor slab is received. Since it is assumed that the composite damper is deformed by 1 to 2 mm, the clearance between the stopper pin and the pin hole may not be ensured when sufficient construction management is not performed. In that case, there is a possibility that the function as a small-amplitude damper is not exhibited.

  And after construction of the composite type damper, if the clearance between the stopper pin and the pin hole cannot be secured, as one of the countermeasures, both a large amplitude damper and a small amplitude damper using a chain block, Alternatively, it is conceivable to remove the bolt at the joint between the large-amplitude damper and the small-amplitude damper, remove only the small-amplitude damper from the building, replace or fine-adjust it, and reattach it. In that case, it takes a long time to replace or fine-tune the composite damper, which is expensive and expensive, and is dangerous for the replacement and fine adjustment work of the composite damper. There is a difficulty that accompanies.

JP-A-3-247870 (FIGS. 2 to 4) Japanese Patent Laid-Open No. 10-280727 (FIGS. 2 and 5)

  The present invention has been made to solve the above-mentioned problems, and is a composite that can secure a clearance between a stopper pin and a pin hole constituting a small-amplitude damper after the construction of a damping frame by a composite damper. It is an object of the present invention to provide a damping structure using a type damper, a method for constructing a damping structure using a composite damper, and a method for adjusting an interval between damping structures using a composite damper.

  The vibration damping structure using the composite damper according to the first aspect of the present invention has a steel-based large-amplitude damper disposed in the plane of the building pillar and the beam structure, and an extending portion at one end. A small-amplitude damper coupled in series to the large-amplitude damper via the extending portion, and the small-amplitude damper includes a pair of external plates disposed in parallel with each other in the axial direction, and a pair of A plurality of internal plates arranged between the external plates so as to be spaced apart in parallel in the axial direction, a viscoelastic body sandwiched between the internal plates, a pair of external plates, a plurality of internal plates and a viscoelastic body And a stopper pin that is removably mounted in a pin hole penetrating in the stacking direction, and the extending portion is disposed at a position corresponding to the pair of external plates and spaced apart in parallel in the axial direction. Outer plate and multiple inner plates At least two internal plates are extended toward the extended portion, and are detachably sandwiched between the extended internal plates and a plurality of extended internal plates that are spaced apart in parallel to the axial direction. A plurality of spacers, a lock mechanism for regulating the amplitude between the small amplitude damper and the extending portion, and a lock release mechanism for allowing the amplitude between the small amplitude damper and the extending portion.

  According to a second aspect of the present invention, in the vibration damping frame using the composite damper according to the first aspect, the plurality of spacers extend outward in the width direction on both side edges of at least two spacers. An extension is provided, and a stopper plate is sandwiched between the extensions.

  According to a third aspect of the present invention, in the vibration damping structure using the composite damper according to the first aspect or the second aspect, the lock mechanism and the lock release mechanism include a pair of extended external plates and a plurality of extended internal parts. A bolt that is removably attached to a through hole that penetrates the plate and the spacer in the stacking direction, and a nut that is screwed to the tip of the bolt are provided.

  According to a fourth aspect of the present invention, in the vibration damping frame using the composite damper according to any one of the first to third aspects, the outer surface side of the small amplitude damper and the outer surface side of the extending portion are An interval adjusting mechanism that can adjust an interval between the small amplitude damper and the extending portion is detachably disposed.

  According to a fifth aspect of the present invention, in the vibration damping frame using the composite damper according to the fourth aspect, the distance adjusting mechanism is detachably attached to the outer surfaces of the pair of external plates, and passes through the first axial direction. A pair of first jigs having through-holes and a second through-hole that is detachably attached to the outer surfaces of the pair of extended external plates and penetrates in the axial direction at a position corresponding to the first through-hole. A pair of second jigs, a pair of shafts that are detachably mounted between the pair of first through holes and the pair of second through holes, and both ends of the pair of shafts. A pair of nuts screwed together is provided.

  According to a sixth aspect of the present invention, in the vibration damping frame using the composite damper according to the fifth aspect, the pair of first jigs and the pair of second jigs are a steel material having a square section or an L-shaped section. It is made of steel material.

  A construction method for a vibration control frame using a composite damper according to a seventh aspect of the present invention includes the vibration control frame using the composite damper according to any one of the first to third aspects, and the composite damper. The vibration control mechanism with a composite damper is attached to the building with the lock mechanism of the extension part that constitutes the vibration control structure by the actuated, and the operation of the lock mechanism is released after the installation work on the building is completed. .

  According to an eighth aspect of the present invention, there is provided a method for adjusting the interval of a vibration control frame by a composite damper, comprising the vibration control frame by a composite damper according to any one of the fourth to seventh aspects. The distance between the stopper pin and the pin hole constituting the damping structure by the composite damper is predetermined by the interval adjustment mechanism that constitutes the damping structure by the composite damper while the lock release mechanism that constitutes the damping structure by the damper is activated. After the adjustment, the lock mechanism constituting the vibration control frame by the composite damper is operated.

  According to the vibration control frame by the composite damper, the construction method of the vibration control frame by the composite damper, and the interval adjustment method of the vibration control frame by the composite damper according to the first to eighth aspects of the present invention, There is a great effect.

  1stly, according to the damping frame by the composite type damper of this invention, the damper for small amplitudes is couple | bonded in series via the extension part with the damper for large amplitudes, and the lock mechanism is provided in the extension part. Therefore, the small-amplitude damper can be prevented from being deformed by an external force during construction.

  In addition, by releasing the locking mechanism of the extension part when the construction of the vibration control frame with the composite type damper is completed, it can be attached to the building with the appropriate clearance between the stopper pin and the pin hole, and as a result With respect to vibrations of buildings due to earthquakes and wind loads, it is possible to exhibit a good damping function as designed for a small-amplitude damper.

  Second, if the distance adjusting mechanism of the present invention is used, the small-amplitude damper is gradually deformed by the axial force in the axial direction (X direction) obtained by rotating (tightening or loosening) the nut. Therefore, the position of the small-amplitude damper can be easily fine-tuned on site. Further, since the locking mechanism in the extended portion is attached at a place where it does not interfere with the damper and the connecting portion of the building, the fixing to the building and the operation of the locking mechanism can be performed independently.

It is explanatory drawing which shows an example of the construction state of the damping frame by the composite type damper in this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows an example of the damping structure by the composite type damper in this invention, A divided figure (a) is a top view, A divided figure (b) is a partial cross section figure. It is explanatory drawing which shows an example of the damper for small amplitudes which has the extension part in this invention, A fraction (a) is a top view, A fragment (b) is sectional drawing which follows the III-III line of a fragment (a), The partial view (c) is a side view, and the partial view (d) is an explanatory view showing the relationship between the stopper pin and the pin hole. It is explanatory drawing which shows an example of the damper for small amplitudes which has the space | interval adjustment mechanism in this invention, A divided figure (a) is a top view, A divided figure (b) is a partial cross section figure. It is a perspective view which shows an example of the measurement condition of the space | interval between the damper for small amplitudes and the extension part in this invention. It is explanatory drawing which shows an example of the damper for small amplitudes of the state which removed the space | interval adjustment mechanism in this invention, A part (a) is a top view, A part (b) is a partial cross section. It is explanatory drawing which shows an example of the damper for small amplitudes which has the space | interval adjustment mechanism in the other Example of this invention, A divided figure (a) is a top view, A divided figure (b) is a partial cross section figure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, preferred embodiments to which a damping structure using a composite damper of the present invention, a method for constructing a damping structure using a composite damper, and a method for adjusting a distance between damping structures using a composite damper are applied. explain.
[Example 1]
FIG. 1 is an explanatory diagram showing an example of a construction state of a vibration control frame by a composite damper according to the present invention, FIG. 2 is an explanatory diagram showing an example of a vibration control frame by a composite damper according to the present invention, and FIG. It is explanatory drawing which shows an example of the damper for small amplitudes which has the extension part in invention.

  In FIG. 1, a building 1 such as a high-rise building or a skyscraper is provided with columns 2 erected at a predetermined interval and beams 3 that connect between adjacent columns 2 and are adjacent to the left and right. In the vertical plane of the space surrounded by the pair of pillars 2 and the upper and lower adjacent beams 3, a damping frame 4 by the composite damper according to the present invention is installed.

  As shown in FIG. 2, the vibration damping frame 4 using the composite damper has a steel-based large-amplitude damper 5 arranged in a brace shape in the vertical plane, and an extending portion 6 at one end portion. A small-amplitude damper 7 coupled in series to the large-amplitude damper 5 through the extended portion 6 is provided. In such a vibration control structure 4 with a composite damper, the large amplitude damper 5 is effective for large amplitude fluctuations caused by a large earthquake, and the small amplitude damper 7 is effective for small amplitude fluctuations due to strong winds. With such a configuration, it is possible to deal with a wide range of vibrations with a single device, and space saving can be achieved by integrating the two dampers.

  Here, in the present invention, “coupling in series” the small-amplitude damper 7 with respect to the large-amplitude damper 5 means that a force is applied between the large-amplitude damper 5 and the small-amplitude damper 7 in the direction of action of the damper. In the following description, the direction in which the force is reliably transmitted will be described as an axial direction.

  As the large-amplitude damper 5, for example, box-type steel is used. One end of the box-type steel is connected to the extending portion 6 via the first connecting portion 5a (see FIG. 1), and the other end is the second. Are connected to the first connecting member 8 (see FIG. 1) via the connecting portion 5b (see FIG. 1). It is important that the large-amplitude damper 5 has a design that does not buckle due to compressive force. For example, an elastic-plastic member such as an ultra-soft steel that yields with a small stress compared to ordinary steel materials is an H-shaped steel. An unbonded brace or the like in which a steel pipe or a circular steel pipe is manufactured and a stiffener for preventing buckling is added thereto is suitable.

  The small-amplitude damper 7 has a sandwich structure in which viscoelastic materials having viscosity and elasticity are sandwiched between a plurality of parallel steel plates, and the viscoelastic material is subjected to shear deformation by an external force in the axial direction (X direction). A so-called viscoelastic damper in which vibration energy is absorbed by a resistance force generated during the operation is suitable.

  Specifically, as shown in FIG. 3, the viscoelastic damper as the small-amplitude damper 7 includes an external plate 71 composed of a pair of metal parts and the like that are spaced apart in parallel to the axial direction (X direction), Between the pair of external plates 71, an internal plate 72 made up of a plurality of metal parts and the like spaced apart in parallel in the axial direction (X direction), and between the adjacent internal plates 72, one external plate 71 (upper part in the figure) ) And an internal plate 72 adjacent to the upper external plate 71 and a viscoelastic body 73 sandwiched between the other external plate 71 (lower part in the figure) and the internal plate 72 adjacent to the lower external plate 71. , And two stopper pins 75 that limit the amplitude of the laminate 74 described later.

  Here, the external plate 71 includes a main body portion 71a that constitutes the stacked body 74, and a continuous portion 71b that is coupled to the second connection member 9 (see FIG. 1), and both side edges of the main body portion 71a. A plurality of through holes (not shown) for penetrating the plurality of bolts 71d are provided at equal intervals along the X direction in the portion (upper and lower portions in FIG. 3A). Has a plurality of through holes 71c for allowing a plurality of bolts (not shown) to pass therethrough at equal intervals along the Z direction.

  The plurality of inner plates 72 have a width (Z direction) of Z1 and a length (X direction) of X2 (see FIG. 3A) and a width (Z direction) of Z2. A length (X direction) X1 and a second internal plate 72b that is longer than the first internal plate 72a in the X direction and is configured as a part of the extending portion 6; The first inner plate 72a and the second inner plate 72b are alternately arranged between the pair of outer plates 71 along the stacking direction (Y direction).

  The viscoelastic body 73 is formed of a rubber sheet having a thickness of about several millimeters, a material that resists by shear deformation such as asphalt, that is, a polymer material having both damping force and restoring force, and has a width (Z direction) and The length (X direction) dimensions are Z2 and X2, respectively.

  As shown in FIG. 3, the pair of external plates 71 and the plurality of first and second internal plates 72 a and 72 b having such a configuration are stacked via a viscoelastic body 73. The pair of outer plates 71 and the plurality of first and second inner plates 72a and 72b are integrated by vulcanization.

  In addition, the pair of external plates 71 having the above configuration, the plurality of first internal plates 72a, the space between the adjacent internal plates 72a and the space between the internal plates 72a adjacent to the external plate 71 (Z direction) Z3, long (X direction) Via a spacer (not shown) of X2, it is integrated by a bolt 71d attached to a through hole (not shown) penetrating in the Y direction and a nut 71e screwed to the tip of the bolt 71d. Has been.

  Further, in the laminated body 74 having such a configuration, two pin holes 76 (only one pin hole 76 appears in FIG. 3B) penetrating in the lamination direction (Y direction) are separated. In these pin holes 76, stopper pins 75 made of, for example, a rolling rod for building structure having a diameter of about 50 mm are detachably mounted. The material of the rolled bar for building structure may be selected according to the design, such as SS400, SNR400B, SNR490B, SM490A, and the like. In this embodiment, two pin holes 76 are provided on the diagonal line of the laminated body 74 at a predetermined interval. As shown in FIG. 3D, the diameter of the pin hole 76 is about several millimeters larger than the diameter D of the stopper pin 75, and the difference between the diameter of the pin hole 76 and the diameter D of the stopper pin 75. Amplitude is limited to the limit of. 3A and 3B, reference numeral 75a denotes a rubber sheet having a thickness of about 10 mm that comes into contact with the outer surface of the external plate 71, and 75b denotes a portion protruding from the outer surface of the outer plate 71 of the stopper pin 75. A flat washer 75c is a C-type retaining ring.

  The extended portion 6 includes an extended external plate 61 made of a pair of metal fittings and the like disposed at positions corresponding to the pair of external plates 71 and spaced in parallel in the axial direction (X direction), and a pair of extended external portions. A spacer composed of a plurality of extended internal plates 62 that are spaced apart in parallel in the axial direction (X direction) between the plates 61, and a metal fitting that is detachably sandwiched between the adjacent extended internal plates 62. 63, and a lock mechanism R and a lock release mechanism RK described later.

  Here, the pair of extended external plates 61 includes a main body portion 61a constituting the laminated body 69 and a continuous portion 61b connected to the first connecting portion 5a (see FIG. 1). A plurality of through holes (not shown) for allowing the first and second bolts 65a and 66a to pass through are provided in the 61a at equal intervals along the Z direction, and a plurality of through holes 61b are provided in the connecting portion 61b. A plurality of through-holes 61c are provided at equal intervals along the Z direction for passing through a bolt (not shown).

  Further, the plurality of extended internal plates 62 are obtained by extending the second internal plate 72b constituting the small amplitude damper 7 toward the extended portion 6 side, and extended with the second internal plate 72b. The inner plate 62 is formed of a single piece.

  Further, the plurality of spacers 63 include a plurality of first spacers 63a having the same width in the Z direction as the extended internal plate 62, and a pair of second spacers having a larger width than the first spacer 63a. 63b, the first spacer 63a is disposed on the outer side of the stacked body 69, and the second spacer 63b is disposed on the inner side of the stacked body 69.

  The extended internal plate 62 and the first and second spacers 63a and 63b having such a configuration are alternately arranged between the pair of extended external plates 61 along the Y direction. In addition, extension portions 63c that extend outward in the Z direction are provided at both edge portions (end portions in the Z direction) of the pair of second spacers 63b, and between the extension portions 63c, respectively. A first stopper plate 64 made of a metal fitting is sandwiched. A second stopper plate 65 and a short spacer 68 are disposed on the extended external plate 61 side of the extension portion 63c. Note that the width (Z direction) and length (X direction) dimensions of the first and second stopper plates 64 and 65 and the short spacer 68 are Z3 and X3, respectively.

  The pair of extended external plates 61, the plurality of extended internal plates 62, and the first and second spacers 63a and 63b having such a configuration are mounted in through holes (not shown) penetrating in the Y direction. The first and second bolts 65a and 66a and the first and second nuts 65b and 66b respectively screwed to the tip ends of the first and second bolts 65a and 66a are integrated. Further, the extension 63c, the first stopper plate 64, the second stopper plate 65, and the short spacer 68 provided at both end edges (ends in the Z direction) of the pair of second spacers 63b are provided in the Y direction. Are integrated by a bolt 67a mounted in a through-hole (not shown) penetrating through and a nut 67b screwed to the tip of the bolt 67a.

  In the extending portion 6 having such a configuration, the first and second bolts 65a and 66a are removably inserted into through holes (not shown) penetrating in the stacking direction (Y direction). The first and second nuts 65b and 66b respectively screwed to the tip ends of the second bolts 65a and 66a are tightened, and the bolt 67a is inserted into and removed from a through hole (not shown) of the extension 63c. The lock mechanism R can be operated by freely inserting and tightening the nut 67b screwed to the tip of the bolt 67a. Further, by loosening the nut 67b in the extension 63c and removing the nut 67b, the bolt 67a, the first stopper plate 64, the second stopper plate 65, and the short spacer 68, the operation of the lock mechanism R can be performed. The unlocking mechanism RK can be activated.

  Next, the construction method of the vibration control frame by the composite damper according to the present invention will be described.

  First, as shown in FIG. 2 and FIG. 3, the extended portion of the laminated structure in which the spacers 63 are sandwiched between the plurality of extended internal plates 62 (second internal plates 72 b) constituting the extended portion 6. The first and second bolts 65a and 66a are mounted in the through-holes 6 and the first and second nuts 65b and 66b screwed to the tip portions of the first and second bolts 65a and 66a are tightened. Further, the first stopper plate 64 is sandwiched between the extension portions 63c of the pair of second spacers 63b, the second stopper plate 65 and the short spacer 68 are disposed, and bolts 67a are attached to the through holes. Then, the nut 67b screwed to the tip of the bolt 67a is tightened.

  Accordingly, the small amplitude damper 7 is locked in a state where the viscoelastic body 73 is not deformed at an arbitrary stroke position.

  Next, the damping frame 4 by the composite damper is lifted with a crane (not shown) together with the pillar 2 and the beam 3 constituting the building 1 and temporarily assembled to the building 1, and a slab (not shown) is placed on the floor (not shown). Install. Then, after the slab is stretched on the floor and the weight of the building 1 is stabilized, the damping frame 4 by the composite damper is fixed to the building 1. Here, since the welding work is deformed to the vibration control frame 4 by the composite damper due to the influence of heat, it is necessary to have a product form that is not affected by the heat as much as possible.

  Finally, the lock mechanism R of the vibration control frame 4 by the composite damper is released. Specifically, the nut 67b screwed to the tip of the bolt 67a disposed in the extension 63c is loosened to remove the bolt 67a from the through hole, and the first stopper plate 64 sandwiched between the extensions 63c, Then, the second stopper plate 65 and the short spacer 68 disposed outside the extension 63c are taken out. Accordingly, the operation of the lock mechanism R can be released, and the lock that allows the amplitude in the axial direction between the small amplitude damper 7 and the extending portion 6 is released.

  As described above, according to the vibration damping structure using the composite damper of the present invention, the small-amplitude damper 7 is coupled in series to the large-amplitude damper 5 via the extending portion 6. Since the lock mechanism R and the lock release mechanism RK are provided, it is possible to prevent the small amplitude damper 7 from being deformed by an external force during construction.

Then, when the construction of the vibration control frame with the composite damper is completed, the lock mechanism R of the extended portion 6 is released, and the structure is attached to the building 1 while maintaining an appropriate clearance between the stopper pin 75 and the pin hole 76. As a result, with respect to the vibration of the building 1 caused by a small earthquake or wind load, the small-amplitude damper 7 can exhibit a good damping function as designed.
[Example 2]
FIG. 4 is an explanatory view schematically showing an example of an interval adjusting mechanism in the present invention. In the figure, parts common to those in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In this embodiment, a small-amplitude damper 7 shown in FIG. 3, that is, a small-amplitude damper 7 in a state where the lock mechanism R is operating, and an interval adjusting mechanism described later are detachable. It is attached. 4 differs from the small amplitude damper 7 and the extending portion 6 shown in FIG. 3 only in the type (difference in the dimensions of the laminated body and the number of bolts, etc.). The structure is the same as that of the small-amplitude damper 7 and the extending portion 6 shown in FIG.

  4, the small-amplitude damper 7 and the extended portion are disposed between the outer surface side of the pair of external plates 71 constituting the small-amplitude damper 7 and the outer surface side of the pair of extended external plates 61 constituting the extended portion 6. An interval adjusting mechanism capable of adjusting the interval g between the 6 is detachably disposed.

  Specifically, the distance adjusting mechanism includes a pair of first jigs 10 and 11 having a square cross section that are detachably attached to the outer surface sides of the pair of external plates 71, and the outer surfaces of the pair of extended external plates 61. And a pair of second jigs 12 and 13 each having a square cross section that is detachably attached to the side. In addition, first through holes 10a and 11a are provided in the X direction in the substantially central portions of the pair of first jigs 10 and 11, respectively. A through hole (not shown) is provided in the Y direction at each end in the width direction (Z direction). The pair of first jigs 10 and 11 are disposed between the two stopper pins 75.

  Similarly, the second through holes 12a and 13a are provided in the X direction in the positions corresponding to the first through holes 10a and 11a, respectively, at the substantially central portions of the pair of second jigs 12 and 13, respectively. Furthermore, through holes (not shown) are also provided in the Y direction at the ends of the pair of first jigs 12 and 13 in the width direction (Z direction).

  The pair of first jigs 10 and 11 having such a configuration includes the first shaft 20 between the through holes provided at the ends in the width direction (Z direction) of the pair of first jigs 10 and 11. And a pair of first jigs 10 and 11 are detachably attached to the outer surface sides of the pair of external plates 71 by screwing the first nuts 22 and 23 to both ends thereof. Will be.

  Similarly, the pair of second jigs 12, 13 is inserted through the second shaft 21 between the through holes provided at the ends in the width direction (Z direction) of the pair of second jigs 12, 13. Then, the second nuts 24 and 25 are screwed to both ends thereof, so that the pair of second jigs 12 and 13 are detachably attached to the outer surface sides of the pair of extended external plates 61, respectively. Will be.

  In this way, the pair of first jigs 10 and 11 are attached to the outer surface side of the pair of external plates 71, and the pair of second jigs 12 and 13 are attached to the outer surface side of the pair of extended external plates 61. After the third shaft 14 is inserted between the first through hole 10a and the second through hole 12a, the third pair of nuts 16a, 16b, 17a, 17b is screwed to each other. Of the third pair of nuts 16a, 16b, 17a, 17b, one pair of nuts 16a, 16b is one end (left side in the figure) of the third shaft 14, and the first The other pair of nuts 17a and 17b is the other end (the right side in the figure) of the third shaft 14 and the second jig 12 is sandwiched between them. It is screwed.

  Similarly, the fourth shaft 15 is inserted between the first through hole 11 a and the second through hole 13 a, and a fourth pair of nuts 18 a, 18 b, 19 a, 19 b are inserted at both ends of the fourth shaft 15. Screw each one. Of the fourth pair of nuts 18a, 18b, 19a, 19b, one pair of nuts 18a, 18b is one end (left side in the figure) of the fourth shaft 15, and The other pair of nuts 19a and 19b is the other end (right side in the figure) of the fourth shaft 15, and the second jig 13 is sandwiched between them. It is screwed.

  As described above, the distance adjusting mechanism can be detachably disposed between the outer surface side of the pair of external plates 71 and the outer surface side of the pair of extended external plates 61.

  Next, a method for adjusting the gap g between the small amplitude damper 7 and the extending portion 6 using such a gap adjusting mechanism will be described.

  First, the lock release mechanism RK is operated to release the lock mechanism R in the extending portion 6. In such a state, for example, the nuts 17a, 17b, 19a, 19b on the second jig 12, 13 side are fixed, and the left nuts 16a, 18a on the first jig 10, 11 side in the figure are fixed. Is loosened, and the extending portion 6 is moved away from the small-amplitude damper 7 by tightening the nuts 16b, 18b on the right side in the drawing on the first jig 10, 11 side, or the first jig Loosen the nuts 16b and 18b on the right side in the drawing on the 10 and 11 side, and tighten the nuts 16a and 18a on the left side in the drawing on the first jig 10 and 11 side, so that the small amplitude damper 7 is moved to the extending portion 6 side. Move towards. By adjusting the gap g between the small-amplitude damper 7 and the extending portion 6 by rotating these nuts, the stopper pin 75 and the pin hole 76 are adjusted to have a predetermined clearance. In this case, as shown in FIG. 5, the gap g between the two can be easily measured by inserting the tip of the gap measuring member 30 into the gap g between the small amplitude damper 7 and the extended portion 6. it can. In this embodiment, by adjusting the gap g between the small amplitude damper 7 and the extending portion 6 by the gap adjusting mechanism, the accuracy of the stopper pin 75 center to the pin hole 76 center is 0.2 mm to 0.5 mm. The range can be adjusted.

  And after adjusting so that the stopper pin 75 and the pin hole 76 may become predetermined clearance, the locking mechanism R in the extension part 6 is operated, and the damper 7 for small amplitudes is locked, and as shown in FIG. Remove the adjustment mechanism.

  Next, as in the first embodiment, the small-amplitude damper 7 is temporarily fixed to the building 1 in a locked state. Then, after the joining of the pillars 2 and beams 3 constituting the building 1 and the placement of the slab on the floor are finished, and the change in the weight of the building 1 with the progress of the construction becomes small, the large amplitude The damper 5 and the small amplitude damper 7 are firmly coupled to the building 1.

  Finally, similarly to the first embodiment, the lock mechanism R is released so that the small-amplitude damper 7 can exhibit a predetermined damper function.

As described above, if the distance adjusting mechanism of the present invention is used, the small amplitude damper 7 is gradually deformed by the axial force in the axial direction (X direction) obtained by rotating (tightening, loosening) the nut. Since it can be given and positioned, the position of the small-amplitude damper 7 can be easily finely adjusted on site. In addition, since the locking mechanism R in the extended portion is attached to a place where it does not interfere with the joint between the damper and the building 1, the fixing to the building 1 and the operation of the locking mechanism R should be performed independently. Can do.
[Example 3]
FIG. 7 is an explanatory view schematically showing another example of the interval adjusting mechanism in the present invention. In the figure, parts common to those in FIGS. 4 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In this embodiment, instead of the pair of first jigs 10 and 11 shown in FIG. 4, an L-shaped third jig 41 having an abutting portion 41 a and a flange portion 41 b is used for the pair of external plates 71. It is detachably attached to the outer surface side through fixing means (not shown), and has an abutting portion 43a and a flange portion 43b instead of the pair of second jigs 12 and 13 shown in FIG. A fourth jig 43 of the mold is detachably attached to the outer surface sides of the pair of external plates 71 via fixing means (not shown).

  Further, a shaft 45 is inserted between a through hole provided in the third jig 41 and a through hole provided in the fourth jig 43, and a pair of nuts 46a, 46b, 47a are provided at both ends of the shaft 45. 47b are screwed.

  Also in this embodiment, as in the second embodiment, the clearance between the stopper pin 75 and the pin hole 76 can be finely adjusted, and the stopper pin 75 and the pin hole 76 are maintained in the building with the optimum clearance maintained. Since they can be joined, the small-amplitude damper 7 can exhibit a good damping function as designed against structural vibrations caused by small earthquakes or wind loads.

  In the above-described embodiments, the present invention is described with specific embodiments shown in the drawings. However, the present invention is not limited to these embodiments, and as long as the effects of the present invention are exhibited, You may comprise as follows.

  1stly, in the above-mentioned Example, although the damper is installed in the shape of a brace, you may install vertically between a pair of adjacent beams 3. FIG.

  Secondly, in the above-described embodiment, box-type steel is used as the damper for large amplitude, but the damper for large amplitude is not limited to this. For example, a steel material made of H-shaped steel or L-shaped steel may be used. Good.

  Thirdly, in the above-described embodiment, the clearance between the stopper pin 75 and the pin hole 76 is about several millimeters, but is not limited to this clearance.

  Fourth, in the above-described embodiment, the shaft is inserted between the jigs constituting the interval adjusting mechanism, but a bolt having a head may be used instead of the shaft.

  Fifth, in the above-described embodiment, two internal plates are used as the internal plate constituting the extending portion, but more than two internal plates may be used.

DESCRIPTION OF SYMBOLS 1 ... Building 2 ... Pillar 3 ... Beam 5 ... Damper 6 for large amplitudes ... Extension part 61 ... Extension outer plate 62 ... Extension inner plate 63 ... -Spacer 63c ... Extension 64 ... Stopper plate 65a, 66a ... Bolt 65b, 66b ... Nut R ... Lock mechanism RK ... Lock release mechanism 7 ... Damper 71 for small amplitude ... External plate 72 ... Internal plate 73 ... Viscoelastic body 75 ... Stopper pin 76 ... Pin holes 10a, 11a ... First through holes 10, 11 ... First Jigs 12a, 13a ... second through holes 12, 13 ... second jigs 14, 15 ... shafts 16a, 16b to 19a, 19b ... nuts

Claims (8)

A steel-based large-amplitude damper arranged in the plane of a building column or beam frame, and an extending portion at one end, which are coupled in series to the large-amplitude damper via the extending portion. With a small amplitude damper
The small-amplitude damper includes a pair of outer plates arranged to be spaced apart in parallel in the axial direction, a plurality of inner plates arranged to be spaced apart in parallel to the axial direction between the pair of outer plates, A viscoelastic body sandwiched between internal plates; a pair of external plates; a plurality of internal plates; and a stopper pin that is detachably mounted in a pin hole that penetrates the viscoelastic body in the stacking direction. ,
The extended portion includes a pair of extended external plates disposed at positions corresponding to the pair of external plates and spaced apart in parallel in the axial direction, and at least two internal plates of the plurality of internal plates Is extended toward the extended portion side, and is arranged with a plurality of extended internal plates spaced apart in parallel to the axial direction, and a plurality of spacers detachably sandwiched between the extended internal plates And a lock mechanism that regulates the amplitude between the small amplitude damper and the extended portion, and a lock release mechanism that allows the amplitude between the small amplitude damper and the extended portion. Vibration control frame with type damper.   Of the plurality of spacers, at least two spacers are provided with extending portions extending outward in the width direction on both side edges, and a stopper plate is sandwiched between the extending portions. A vibration damping structure using a composite damper according to claim 1.   The lock mechanism and the unlock mechanism include a pair of extended external plates, a plurality of extended internal plates, a bolt that is removably attached to a through hole that penetrates the spacer in the stacking direction, and the bolt 3. A damping structure using a composite damper according to claim 1 or 2, further comprising a nut screwed to the tip portion of the composite damper.   An interval adjustment mechanism capable of adjusting an interval between the small amplitude damper and the extending portion is detachably disposed on the outer surface side of the small amplitude damper and the outer surface side of the extending portion. A vibration damping structure using a composite damper according to any one of claims 1 to 3.   The spacing adjusting mechanism is detachably attached to the outer surfaces of the pair of external plates, and has a pair of first jigs having a first through hole penetrating in the axial direction, and the pair of extended external plates A pair of second jigs that are detachably attached to the outer surfaces of the first jig and have second through holes penetrating in the axial direction at positions corresponding to the first through holes, and the pair of first through holes And a pair of shafts that are detachably mounted across the pair of second through holes, and a pair of nuts that are respectively screwed to both ends of the pair of shafts. A vibration control frame using the composite damper according to claim 4.   6. The vibration damping frame using a composite damper according to claim 5, wherein the pair of first jigs and the pair of second jigs are made of a steel material having a square cross section or an L-shaped steel material. A vibration damping structure comprising the composite damper according to any one of claims 1 to 3,
The vibration control structure by the composite damper is attached to the building in a state where the lock mechanism of the extension part constituting the vibration control structure by the composite damper is operated, and after the installation work to the building is completed, the lock mechanism A method for constructing a vibration control frame with a composite damper, wherein the operation is released. A vibration damping frame comprising the composite damper according to any one of claims 4 to 7,
A stopper pin constituting the damping structure by the composite damper by means of an interval adjusting mechanism constituting the damping structure by the composite damper in a state in which the lock release mechanism constituting the damping structure by the composite damper is operated. A method for adjusting the distance between the vibration control frames using the composite damper, wherein the clearance between the pin holes is adjusted so as to have a predetermined clearance, and a lock mechanism that configures the vibration control frame using the composite damper is operated after the adjustment.

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