JP2008215071A - Seismic response control apparatus and seismic control structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic response control apparatus having an enhanced seismic response controlling performance without increasing the size of the apparatus. <P>SOLUTION: The seismic response control apparatus comprises a viscous liquid reservoir tank 14 installed on a lower beam 16 of a building structure, and an in-plane vibration control plate 18 suspended from an upper beam 20 of the building structure and immersed in a viscous liquid 12 stored in the viscous liquid reservoir tank 14. The apparatus is further provided with a hysteresis vibration damper 26 installed between the upper beam 16 and the in-plane vibration control plate 18, and the in-plane vibration control plate 18 is fixed to the upper beam 20 with the hysteresis vibration damper 26 disposed between them. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibration control device and a vibration control structure that suppress rolling of a structure.

  In general, middle- and high-rise building structures and civil engineering structures such as railway viaducts adopt a ramen structure as a framework. For this reason, an interlayer deformation may occur between the upper floor and the lower floor due to seismic force or the like, and this interlayer deformation appears as a roll, and if the interlayer deformation increases, the structure is destroyed.

  In order to suppress the rolling caused by such interlayer deformation and maintain the soundness of the structure, various types of vibration control devices have been devised, and one of them is a viscous body or viscoelastic body. A seismic control device that uses the roll of a structure to suppress it is known (Patent Document 1).

  FIG. 26 is a front view of the above-described vibration control device, and FIG. 27 is a longitudinal sectional view thereof. 26 and 27, the vibration damping device 10 is provided with a box-shaped viscous material storage tank 14 in which a viscous body 12 or a viscoelastic body is stored. The viscous body storage tank 14 is a lower beam portion 16 of the structure. It is fixed on the top. Further, the vibration control device 10 includes a rectangular in-plane vibration suppressing plate 18. The in-plane vibration suppressing plate 18 is formed to have a size that does not contact the inner surface of the viscous material storage tank 14, and is suspended from the upper beam portion 20 of the structure and immersed in the viscous material 12.

  In the vibration damping device 10 configured in this way, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing the in-plane vibration suppressing plate 18 to be in the viscous material reservoir 14. On the other hand, when trying to move in the horizontal direction, the viscous resistance of the viscous body or the viscoelastic body 12 acts on the in-plane vibration suppressing plate 18, so that the roll due to the interlayer deformation is caused by the viscous resistance acting on the in-plane vibration suppressing plate 18. It is possible to suppress.

JP-A-1-97764

  However, in the above-described vibration control device, if the surface area of the in-plane vibration suppression plate 18 is increased in order to improve the vibration control performance, the viscous material storage tank 14 is also changed to a viscous material storage tank with a large volume. There must be. For this reason, there was a problem that the size of the apparatus was increased and the occupied area with respect to the frame space was increased.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a vibration control device and a vibration control structure capable of improving the vibration control performance without increasing the size of the device. There is.

  In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a viscous material storage tank installed on a lower beam portion of a structure and a viscous material storage tank suspended from the upper beam portion of the structure. In a vibration control device comprising an in-plane vibration suppression plate immersed in a viscous body or a viscoelastic body stored in the end surface of the hysteretic vibration attenuator in the in-plane vibration suppression plate or the viscous body storage tank The fork-type vibration damping mechanism is formed by fixing the viscous body storage tank or the in-plane vibration suppressing plate to the other end surface of the hysteresis type vibration attenuator opposite to the one end surface.

  In the invention of claim 2, a viscous vibration attenuator is arranged between the lower beam portion and the upper beam portion of the structure, and the structure of the structure such as an earthquake of the structure is interposed through the viscous vibration attenuator. In the vibration control device configured to suppress horizontal lateral displacement, a hysteretic vibration attenuator is connected to the viscous vibration attenuator in a series or parallel relationship to form a coupling mechanism, and the coupling mechanism One end of the coupling mechanism is connected to the lower beam portion, and the other end of the coupling mechanism opposite to the one end is connected to the upper beam portion.

  The invention according to claim 3 is characterized in that the vibration control device according to claim 1 or 2 is used as means for absorbing vibration energy input to the frame of the structure.

  ADVANTAGE OF THE INVENTION According to this invention, the damping device which can aim at the improvement of damping performance can be provided, without causing the enlargement of an apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of the vibration control device according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 and 2, the vibration control device 22 according to the first embodiment of the present invention includes a viscous material storage tank 14 fixed on the lower beam portion 16 of the structure. The viscous body storage tank 14 is formed in a box shape with an upper portion opened, and a viscoelastic body 12 such as a gel made of a viscous material such as a carbon compound or silicone oil or an asphalt rubber is contained therein. A rectangular in-plane vibration suppression plate 18 that is stored and suppresses interlayer deformation generated between the lower beam portion 16 and the upper beam portion 20 is inserted.

  The in-plane vibration suppressing plate 18 has a rectangular plate-like portion 18 a immersed in the viscous body or viscoelastic body 12, and between the plate-like portion 18 a and the inner surface of the viscous body storage tank 14. The gap is formed so that the plate-like portion 18a does not come into contact with the inner surface of the viscous material reservoir 14 even if the expected interlayer deformation occurs. Further, the in-plane vibration suppressing plate 18 has a plate-like attachment portion 18b at the upper end portion, and a plurality (for example, three) of hysteresis type vibrations are provided between the attachment portion 18b and the upper beam portion 20. Attenuators 26 are provided at substantially equal intervals in the longitudinal direction (in-plane horizontal direction) of the upper beam portion 20.

  As shown in FIG. 3, the hysteresis type vibration attenuator 26 includes a vibration energy absorber 28 for absorbing vibration energy, and both end surfaces of the vibration energy absorber 28 are rectangular mounting plates 30 and 32. Are fixed to the lower surface of the upper beam portion 20 and the upper surface of the mounting portion 18b.

  As shown in FIG. 4, the vibration energy absorber 28 includes a laminate 34 formed by alternately laminating constraining layers such as rubber and metal layers in the vertical direction, and an upper surface and a lower surface of the laminate 34. Two metal plates 36 and 38 vulcanized and bonded are provided, and these metal plates 36 and 38 are respectively fixed to the mounting plates 30 and 32 by a plurality of bolts 40. Further, the vibration energy absorber 28 includes cylindrical lead plugs 42 and 44 embedded in the laminated body 34, and an adhesive friction material 45 made of a striped steel plate or the like is provided on both end faces of the lead plugs 42 and 44. Is provided. That is, the vibration energy absorber 28 includes lead plugs 42 and 44 that absorb vibration energy, and a laminated body 34 that restrains the lead plugs 42 and 44.

  The mounting plates 30 and 32 are formed to be slightly larger than the vibration energy absorber 28, and the mounting plates 30 and 32 are attached to the upper beam portion 20 by bolts (not shown) on the outer edges of the mounting plates 30 and 32. In addition, a large number of mounting holes 46 (see FIG. 3) are formed for fixing to the in-plane vibration suppressing plate 18.

  The lead plugs 42 and 44 have a cross-sectional shape in the vertical direction that is set to have a large transverse dimension with respect to the longitudinal dimension. In this embodiment, when the longitudinal dimension H is 1, the transverse dimension L is about 1.5 to 3. Thus, the proportion of the lead plugs 42 and 44 in the horizontal direction with respect to the cross-sectional area in the horizontal direction of the laminate 34 is increased. Specifically, the laminated body 34 has a long side of about 60 to 90 cm and a short side of about 25 to 40 cm, and the lead plugs 42 and 44 have a diameter of about 15 to 26 cm. The ratio of the horizontal sectional area of the lead plugs 42 and 44 to the area is set to 20 to 50 percent. If this ratio is small, the damping performance itself becomes small, so that it is necessary to increase the size of the device and to increase the number of devices. Moreover, when the said ratio is extremely large, attenuation | damping performance falls because the restraining effect of lead falls, It is suitable to set it to about 15 to 35%. The vibration energy absorber 28 has a height of about 5 to 10 cm, and the overall shape is a flat rectangular parallelepiped shape.

  FIG. 5 is a diagram schematically illustrating the vibration control device 22 illustrated in FIG. 1. In the figure, the symbol M1 indicates the mass of the lower beam portion 16, and M2 indicates the mass of the upper beam portion 20. Reference numeral Cw denotes a damping coefficient of a viscous damping system constituted by the viscous body storage tank 14, the viscous body 12, and the in-plane vibration suppressing plate 18, and Kf is constituted by the hysteresis type vibration damping body 26 described above. The stiffness of the hysteresis damping system is shown.

  In the vibration damping device 22 according to the first embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby suppressing in-plane vibration. When the plate 18 is about to be displaced in the horizontal direction with respect to the viscous body storage tank 14, the viscous resistance of the viscous body or the viscoelastic body 12 acts on the surface of the in-plane vibration suppressing plate 18, and the hysteretic vibration damping body 26 The vibration energy is absorbed by causing the lead plugs 42 and 44 of the vibration energy absorber 28 to undergo shear deformation according to the reaction force of the in-plane vibration suppressing plate 18. That is, the viscous damping system including the viscous body storage tank 14, the viscous body or viscoelastic body 12, and the in-plane vibration suppressing plate 18 attenuates the vibration component in proportion to the speed, and the hysteretic vibration attenuation body 26 is the vibration component. Is attenuated in proportion to the displacement.

  Therefore, in the first embodiment described above, a Maxwell type vibration damping mechanism in which the viscous damping system Cw and the hysteresis damping system Kf are connected in series is formed, so that the surface area of the in-plane vibration suppressing plate 18 is not increased. However, energy can be absorbed at any time for the velocity component and displacement component of the seismic motion system, and the damping performance can be improved. Therefore, the damping performance can be improved without increasing the size of the apparatus.

  FIG. 6 is a front view of the vibration control device according to the second embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line BB in FIG. 6 and 7, the vibration damping device according to the second embodiment of the present invention includes a viscous material reservoir 14 fixed on the lower beam portion 16 of the structure. The viscous body storage tank 14 is formed in a box shape with an upper portion opened, and a viscoelastic body 12 such as a gel made of a viscous material such as a carbon compound or silicone oil or an asphalt rubber is contained therein. A rectangular in-plane vibration suppression plate 18 that is stored and suppresses interlayer deformation generated between the lower beam portion 16 and the upper beam portion 20 is inserted.

  The in-plane vibration suppressing plate 18 has a rectangular plate-like portion 18 a immersed in the viscous body or viscoelastic body 12, and between the plate-like portion 18 a and the inner surface of the viscous body storage tank 14. The gap is formed so that the plate-like portion 18a does not come into contact with the inner surface of the viscous material reservoir 14 even if the expected interlayer deformation occurs. Further, the in-plane vibration suppressing plate 18 has a plate-like mounting portion 18b at the upper end, and a plurality (for example, two) of hysteresis type vibrations are provided between the mounting portion 18b and the upper beam portion 20. Attenuators 26 are provided at substantially equal intervals in the longitudinal direction (in-plane horizontal direction) of the upper beam portion 20.

  The hysteretic vibration attenuator 26 includes a vibration energy absorber 28 (see FIG. 3) that absorbs vibration energy, and both end surfaces of the vibration energy absorber 28 are located on the upper side via rectangular mounting plates 30 and 32. It is being fixed to the lower surface of the beam part 20, and the upper surface of the attaching part 18b.

  Further, a displacement direction between the mounting portion 18b of the in-plane vibration suppression plate 18 and the upper beam portion 20 that allows displacement of the in-plane vibration suppression plate 18 due to interlayer deformation only in the longitudinal direction of the upper beam portion 20. Restricting means 90 is provided. This direction regulating means 90 has an upper guide 92 fixed to the lower surface of the upper beam portion 20, and a guide convex portion (or guide concave portion) 94 is provided on the lower surface of the upper guide 92 in the longitudinal direction of the upper beam portion 20. It is provided along. Further, the direction regulating means 90 has a lower guide 96 fixed to the upper surface of the mounting portion 18b, and the upper surface of the lower guide 96 is slidably engaged with the guide convex portion (or guide concave portion) 94. Engaging concave portions (or engaging convex portions) 98 are provided. A plurality of ball bearings (not shown) are provided in the lower guide 96 (or in the upper guide 92) in rolling contact with the guide convex portion 94 (or the engaging convex portion 98).

  In the vibration damping device according to the second embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing an in-plane vibration suppressing plate. When 18 is going to be displaced in the horizontal direction with respect to the viscous material reservoir 14, a viscous resistance proportional to the velocity component of the viscous material or the viscoelastic body 12 acts on the surface of the in-plane vibration suppressing plate 18, and the hysteretic vibration is applied. The lead plugs 42 and 44 of the vibration energy absorber 28 of the damping body 26 cause shear deformation according to the reaction force of the in-plane vibration suppression plate 18, so that vibration energy proportional to the displacement component is absorbed. That is, the viscous damping system including the viscous body storage tank 14, the viscous body or viscoelastic body 12, and the in-plane vibration suppressing plate 18 attenuates the vibration component in proportion to the speed, and the hysteretic vibration attenuation body 26 is the vibration component. Is attenuated in proportion to the displacement.

  Therefore, in the second embodiment described above, a Maxwell type vibration damping mechanism in which a viscous damping system and a hysteresis damping system are connected in series is formed, so that the surface area of the in-plane vibration suppression plate 18 does not have to be increased. Since the damping performance can be improved, the damping performance can be improved without increasing the size of the apparatus.

  Further, in the above-described second embodiment, the displacement direction restricting means that allows the displacement of the in-plane vibration suppression plate 18 between the in-plane vibration suppression plate 18 and the upper beam portion 20 only in the longitudinal direction of the upper beam portion 20. By providing 90, the in-plane vibration suppression plate 18 can be displaced only in the longitudinal direction of the upper beam portion 20 in the event of an earthquake, thereby suppressing the rotational motion associated with the horizontal deformation of the in-plane vibration suppression plate 18. Can do.

  In the first and second embodiments described above, a plurality of hysteretic vibration attenuators 26 are provided between the in-plane vibration suppressing plate 18 and the upper beam portion 20, but the hysteretic vibration having a large vibration absorption capability is provided. If it is an attenuator, it may be one.

  FIG. 8 is a front view of the vibration control device according to the third embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along the line CC of FIG. 8 and 9, the vibration control device 48 according to the third embodiment of the present invention includes a viscous body storage tank 14 that is formed in a box shape with an upper opening, and the inside of the viscous body storage tank 14. For example, a viscoelastic body 12 such as a gel made of a viscous material such as a carbon compound or silicone oil or an asphalt rubber is stored, and is generated between the lower beam portion 16 and the upper beam portion 20. An in-plane vibration suppressing plate 18 that suppresses interlayer deformation is inserted. The in-plane vibration suppressing plate 18 is formed in such a size that it does not come into contact with the inner surface of the viscous material reservoir 14 even if the expected interlayer deformation occurs. In other words, even if an expected interlayer deformation occurs between the in-plane vibration suppression plate 18 and the inner surface of the viscous material storage tank 14, the gap is such that the in-plane vibration suppression plate 18 does not contact the inner surface of the viscous material storage tank 14. The upper end portion of the in-plane vibration suppressing plate 18 is fixed to the lower surface of the upper beam portion 20 with a plurality of bolts.

  The viscous material reservoir 14 is installed on the lower beam portion 16, and a plurality of (for example, two) hysteretic vibration attenuators 26 are provided between the lower beam portion 16 and the viscous material reservoir 14. Are provided at substantially equal intervals in the longitudinal direction (in-plane horizontal direction) of the lower beam portion 16. These hysteretic vibration attenuators 26 are provided with vibration energy absorbers 28 (see FIG. 3) for absorbing vibration energy, and both end surfaces of the vibration energy absorbers 28 are attached via rectangular mounting plates 30 and 32. It is fixed to the lower surface of the viscous material reservoir 14 and the upper surface of the lower beam portion 16.

  In the vibration damping device 48 according to the third embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby suppressing in-plane vibration. When the plate 18 is about to be displaced in the horizontal direction with respect to the viscous body storage tank 14, the viscous resistance of the viscous body or the viscoelastic body 12 acts on the surface of the in-plane vibration suppressing plate 18, and the hysteretic vibration damping body 26 The vibration energy is absorbed by causing the lead plugs 42 and 44 of the vibration energy absorber 28 to undergo shear deformation according to the reaction force of the in-plane vibration suppressing plate 18. That is, the viscous damping system including the viscous body storage tank 14, the viscous body or viscoelastic body 12, and the in-plane vibration suppressing plate 18 attenuates the vibration component in proportion to the speed, and the hysteretic vibration attenuation body 26 is the vibration component. Is attenuated in proportion to the displacement.

  Therefore, in the above-described third embodiment, a Maxwell type vibration damping mechanism in which a viscous damping system and a hysteresis damping system are connected in series is formed, so that the surface area of the in-plane vibration suppressing plate 18 is not increased. Since the damping performance can be improved, the damping performance can be improved without increasing the size of the apparatus.

  FIG. 10 is a front view of a vibration damping device according to the fourth embodiment of the present invention, and FIG. 11 is a cross-sectional view taken along the line DD of FIG. 10 and 11, the vibration control device according to the fourth embodiment of the present invention includes a viscous body storage tank 14 that is formed in a box shape with an upper part opened, and the viscous body storage tank 14 is provided with the viscous body storage tank 14. Is a viscoelastic body 12 such as a gel made of a viscous material such as a carbon-based compound or silicone oil or an asphalt rubber, and a layer generated between the lower beam portion 16 and the upper beam portion 20. An in-plane vibration suppressing plate 18 that suppresses deformation is inserted. There is a gap between the in-plane vibration suppression plate 18 and the inner surface of the viscous material reservoir 14 so that the in-plane vibration suppression plate 18 does not contact the inner surface of the viscous material reservoir 14 even if an expected interlayer deformation occurs. The upper end portion of the in-plane vibration suppressing plate 18 is fixed to the lower surface of the upper beam portion 20 with a plurality of bolts.

  The viscous material storage tank 14 is installed on the lower beam portion 16, and a plurality (for example, two) of hysteresis type vibration damping bodies 26 are provided between the lower beam portion 16 and the viscous material storage tank 14. Are provided at substantially equal intervals in the longitudinal direction of the lower beam portion 16. These hysteretic vibration attenuators 26 are provided with vibration energy absorbers 28 (see FIG. 3) for absorbing vibration energy, and both end surfaces of the vibration energy absorbers 28 are attached via rectangular mounting plates 30 and 32. It is fixed to the lower surface of the viscous material reservoir 14 and the upper surface of the lower beam portion 16.

  Between the lower beam portion 16 and the viscous material storage tank 14, a displacement direction regulating means 90 that allows the displacement of the viscous material storage tank 14 due to interlayer deformation only in the longitudinal direction of the lower beam portion 16. Is provided. The direction restricting means 90 has an upper guide 92 fixed to the lower surface of the viscous material storage tank 14, and a guide concave portion (or a guide convex portion) 94 is formed on the lower beam portion 16 on the lower surface of the upper guide 92. It is provided along the longitudinal direction. Further, the direction regulating means 90 has a lower guide 96 fixed to the upper surface of the lower beam portion 16, and can slide on the upper surface of the lower guide 96 with the guide concave portion (or guide convex portion) 94. An engaging convex portion (or engaging concave portion) 98 that engages with is provided. A plurality of ball bearings (not shown) are provided in the upper guide 92 (or the lower guide 96) in rolling contact with the engaging convex portion 98 (or the guide convex portion 94).

  In the vibration damping device according to the fourth embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing an in-plane vibration suppressing plate. When 18 is to be displaced in the horizontal direction with respect to the viscous body storage tank 14, the viscous resistance of the viscous body or the viscoelastic body 12 acts on the surface of the in-plane vibration suppressing plate 18, and the hysteresis type vibration damping body 26 vibrates. Vibration energy is absorbed by causing the lead plugs 42 and 44 of the energy absorber 28 to undergo shear deformation in accordance with the reaction force of the in-plane vibration suppressing plate 18. That is, the viscous damping system including the viscous body storage tank 14, the viscous body or viscoelastic body 12, and the in-plane vibration suppressing plate 18 attenuates the vibration component in proportion to the speed, and the hysteretic vibration attenuation body 26 is the vibration component. Is attenuated in proportion to the displacement.

  Therefore, in the above-described fourth embodiment, a Maxwell type vibration damping mechanism in which a viscous damping system and a hysteresis damping system are connected in series is formed, so that the surface area of the in-plane vibration suppression plate 18 does not have to be increased. Since the damping performance can be improved, the damping performance can be improved without increasing the size of the apparatus.

  Further, in the above-described fourth embodiment, the displacement direction restricting means that allows the displacement of the viscous material reservoir 14 between the lower beam portion 16 and the viscous material reservoir 14 only in the longitudinal direction of the lower beam portion 16. By providing 90, the viscous material storage tank 14 can be displaced only in the longitudinal direction of the upper beam portion 20 in the event of an earthquake, thereby suppressing the rotational motion associated with the horizontal deformation of the in-plane vibration suppressing plate 18. it can.

  FIG. 12 is a front view of a vibration control device according to the fifth embodiment of the present invention, and FIG. 13 is a cross-sectional view taken along line EE of FIG. 12 and 13, the vibration control device 48 according to the fifth embodiment of the present invention includes the viscous material reservoir 14 fixed on the lower beam portion 16 of the structure. The viscous body storage tank 14 is formed in a box shape with an upper portion opened, and a viscoelastic body 12 such as a gel made of a viscous material such as a carbon compound or silicone oil or an asphalt rubber is contained therein. An in-plane vibration suppressing plate 18 that is stored and suppresses interlayer deformation generated between the lower beam portion 16 and the upper beam portion 20 is inserted.

  There is a gap between the in-plane vibration suppressing plate 18 and the inner surface of the viscous material storage tank 14 so that the in-plane vibration suppressing plate 18 does not contact the inner surface of the viscous material storage tank 14 even if an expected interlayer deformation occurs. The upper end portion of the in-plane vibration suppressing plate 18 is fixed to the lower surface of the upper beam portion 20 with a plurality of bolts. Further, the in-plane vibration suppressing plate 18 is formed in a square shape, and a plurality (for example, two) of the in-plane vibration suppressing plate 18 is provided between the front upper portion and the rear upper portion of the in-plane vibration suppressing plate 18 and the viscous material storage tank 14. The hysteretic vibration attenuator 26 is provided.

  The hysteretic vibration attenuator 26 includes a vibration energy absorber 28 (see FIG. 3) for absorbing vibration energy, and both end surfaces of the vibration energy absorber 28 are attached to the viscous material storage tank via mounting plates 30 and 32. 14 and the surface of the in-plane vibration suppressing plate 18 are respectively fixed.

  FIG. 14 is a diagram schematically illustrating the vibration control device 48 illustrated in FIGS. 12 and 13. In the figure, the symbol M1 indicates the mass of the lower beam portion 16, and M2 indicates the mass of the upper beam portion 20. Reference numeral Cw denotes a damping coefficient of a viscous damping system including the viscous body storage tank 14, the viscous body or viscoelastic body 12, and the in-plane vibration suppressing plate 18, and Kf denotes the hysteresis type vibration attenuator 26 described above. The rigidity of the hysteresis damping system composed of

  In the vibration damping device 48 according to the fifth embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing in-plane vibration. When the suppression plate 18 is about to be displaced in the horizontal direction with respect to the viscous body storage tank 14, the viscous resistance of the viscous body or the viscoelastic body 12 acts on the in-plane vibration suppression plate 18 and the vibration of the hysteretic vibration attenuator 26. When the lead plugs 42 and 44 of the energy absorber 28 cause shear deformation according to the reaction force of the in-plane vibration suppressing plate 18, vibration energy is absorbed simultaneously.

  Therefore, in the fifth embodiment described above, a forked type vibration damping mechanism is formed in which the damping coefficient Cw of the viscous damping system and the rigidity Kf of the hysteresis damping system are connected in parallel, whereby the surface area of the in-plane vibration suppressing plate 18 is increased. Therefore, it is possible to improve the vibration control performance without increasing the size of the apparatus.

  FIG. 15 is a front view of a vibration control device according to the sixth embodiment of the present invention, and FIG. 16 is a cross-sectional view taken along line FF in FIG. 15 and 16, the vibration control device according to the sixth embodiment of the present invention includes a viscous material reservoir 14 fixed on the lower beam portion 16 of the structure. The viscous body storage tank 14 is formed in a box shape with an upper opening, and a viscoelastic body 12 such as a gel made of a viscous material such as a carbon-based compound or silicone oil or asphalt rubber is contained therein. The in-plane vibration suppressing plate 18 is inserted while being stored.

  There is a gap between the in-plane vibration suppressing plate 18 and the inner surface of the viscous material storage tank 14 so that the in-plane vibration suppressing plate 18 does not contact the inner surface of the viscous material storage tank 14 even if an expected interlayer deformation occurs. Most of the in-plane vibration suppressing plate 18 is formed and immersed in the viscous body or viscoelastic body 12. The in-plane vibration suppressing plate 18 is formed in a square shape, and the upper end portion thereof is fixed to the lower surface of the upper beam portion 20 by a plurality of bolts. Further, the in-plane vibration suppressing plate 18 has a mounting plate 18b that is bolted to the lower surface of the upper beam portion 20, and a plurality of (for example, six) hysteretic vibration attenuators are provided on the lower surface of the mounting plate 18b. 26 is attached.

  The hysteresis type vibration attenuating body 26 is disposed on both sides of the mounting plate 18b with the in-plane vibration suppressing plate 18 interposed therebetween. The hysteretic vibration attenuator 26 has an upper mounting plate 30 whose upper surface is fixed to the lower surface of the mounting plate 18b, a vibration energy absorber 28 whose upper surface is fixed to the lower surface of the upper mounting plate 30, and the vibration energy absorption. The lower mounting plate 32 has an upper surface fixed to the lower surface of the body 28, and the lower surface of the lower mounting plate 32 is fixed to the outer surface of the viscous material reservoir 14 via a bracket 29.

  In the vibration damping device according to the sixth embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby suppressing in-plane vibration. When the plate 18 tries to be displaced in the horizontal direction with respect to the viscous material storage tank 14, the viscous resistance of the viscous material or the viscoelastic material 12 acts on the in-plane vibration suppressing plate 18, and the vibration energy of the hysteretic vibration attenuator 26. The lead plugs 42 and 44 of the absorber 28 cause shear deformation in accordance with the amount of displacement of the in-plane vibration suppression plate 18, thereby simultaneously absorbing vibration energy.

  Therefore, in the sixth embodiment described above, a forked type vibration damping mechanism is formed in which the damping coefficient Cw of the viscous damping system and the rigidity Kf of the hysteresis damping system are connected in parallel, whereby the surface area of the in-plane vibration suppressing plate 18 is increased. Therefore, it is possible to improve the vibration control performance without increasing the size of the apparatus.

  In the sixth embodiment described above, the hysteresis type vibration attenuator 26 is attached to both surfaces of the in-plane vibration suppression plate 18. However, if the hysteresis type vibration attenuator has a large vibration absorption capability, the in-plane vibration suppression plate 18 is used. Even if it is provided only on one side, the same effect can be obtained.

  FIG. 17 is a front view of a vibration control device according to the seventh embodiment of the present invention. The vibration damping device according to the seventh embodiment includes a bracket 82 installed at the center of the upper surface of the lower beam portion 16, and diagonally from the center of the upper surface of the bracket 82 toward both ends of the lower surface of the upper beam portion 20. Viscosity type vibration attenuators 100 and 100 that are extended, and connection members 101 and 101 that connect the viscous type vibration attenuators 100 and 100 to both lower end portions of the upper beam portion 20, and a bracket 82 and a lower portion. A plurality of hysteretic vibration attenuators 26 are provided between the side beams 16.

  As shown in FIG. 18, the viscous vibration attenuator 100 includes a first connecting member 102 connected to the upper beam portion 20 of the structure, a second connecting member 104 connected to the bracket 82, A fixed outer cylinder 106 fixed to one of the connecting members 102 and 104 (for example, the connecting member 104), a rotating inner cylinder 108 rotatably accommodated in the fixed outer cylinder 106, and the rotating inner cylinder 108 A guide nut 110 attached to one end is provided, and a guide screw 112 provided on one of the connecting members 102 and 104 (for example, the connecting member 102) is screwed to the guide nut 110 via a ball bearing 114. is doing. Further, a gap is formed between the inner peripheral surface of the fixed outer cylinder 106 and the outer peripheral surface of the rotating inner cylinder 108, and a viscous body or viscoelastic body 116 is enclosed in this gap.

  The hysteresis type vibration attenuator 26 is the same as that shown in FIGS. 3 and 4, and the mounting plate 30 of the hysteresis type vibration attenuator 26 is fixed to the lower surface of the bracket 82. The mounting plate 32 is fixed to the upper surface of the lower beam portion 16. In this embodiment, the hysteresis type vibration attenuator 26 constitutes a Maxwell type vibration attenuating mechanism in cooperation with the viscous vibration attenuators 100 and 100.

  In the seventh embodiment of the present invention configured as described above, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing the upper beam portion 20 to be relatively displaced in the horizontal direction. In this case, the viscous resistance of the viscous body or viscoelastic body 116 acts between the outer cylinder 106 and the inner cylinder 108 of the viscous vibration attenuator 100, and the upper beam is caused by the viscous resistance of the viscous body or viscoelastic body 116. The horizontal displacement of the portion 20 is suppressed. At this time, the lead plugs 42 and 44 of the vibration energy absorber 28 of the hysteretic vibration attenuator 26 constituting the Maxwell vibration attenuator mechanism together with the viscous vibration attenuators 100 and 100 cause shear deformation, thereby generating vibration energy. Absorbed. Therefore, in the seventh embodiment described above, as in the first to sixth embodiments, it is possible to improve the damping performance without increasing the size of the device.

  FIG. 19 is a front view of a vibration control device according to the eighth embodiment of the present invention. The vibration control device according to the eighth embodiment includes a V-shaped brace structure 117 provided between the upper beam portion 20 and the lower beam portion 16, and the upper beam portion via the V-shaped brace structure 117. 20 and viscous vibration attenuators 118 and 118 that suppress interlayer deformation between the lower beam portion 16 and the lower beam portion 16. The V-shaped brace structure 117 is a bracket 117a installed at the center of the upper surface of the lower beam part 16, and extends obliquely from the center of the upper surface of the bracket 117a toward the corners of the upper beam part 20 and the column 119. Hysteresis type vibration attenuating bodies 26, 26 are provided between the bracket 117a and the lower beam portion 16, and the V-shaped brace constituting members 117b, 117b.

  As shown in FIG. 20, the viscous vibration attenuator 118 includes a cylinder 122 connected to a bracket 117 a or a column 119 via a cylindrical member 120, and a piston 124 slidably provided in the cylinder 122. The viscous body 126 is enclosed in the cylinder 122. The viscous vibration attenuator 118 includes a connecting member 130 connected to the piston 124 via a piston rod 128, and the connecting member 130 is connected to the column 119 or the bracket 117a.

  The hysteresis type vibration attenuating body 26 is the same as that shown in FIGS. 3 and 4, and the mounting plate 30 of the hysteresis type vibration attenuating body 26 is fixed to the lower surface of the bracket 117a. The mounting plate 32 is fixed to the upper surface of the lower beam portion 16. In this embodiment, the hysteresis type vibration attenuator 26 forms a forked type vibration attenuating mechanism in cooperation with the viscous vibration attenuators 118 and 118.

  In the eighth embodiment of the present invention configured as described above, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, thereby causing the upper beam portion 20 to be relatively displaced in the horizontal direction. When trying to do so, the viscous resistance of the viscous body or viscoelastic body 126 acts on the piston 124 of the viscous vibration attenuator 118, and the horizontal displacement of the upper beam portion 20 is suppressed by the viscous resistance of the viscous body or viscoelastic body 126. Is done. At this time, the vibration energy is absorbed by the lead plugs 42 and 44 of the vibration energy absorber 28 of the hysteretic vibration attenuator 26 constituting the forked vibration attenuator mechanism together with the viscous vibration attenuators 118 and 118. Is done. Therefore, in the above-described eighth embodiment, as in the first to seventh embodiments, it is possible to improve the vibration control performance without increasing the size of the device.

  FIG. 21 is a front view of a vibration control device according to the ninth embodiment of the present invention. In the figure, reference numeral 50 denotes a vibration control device according to the ninth embodiment of the present invention, and this vibration control device is composed of a viscous vibration attenuator 50 and a hysteretic vibration attenuator 26.

  The viscous vibration attenuator 50 is provided substantially horizontally between the lower beam portion 16 and the upper beam portion 20 of the structure. The viscous vibration attenuator 50 includes a cylinder 50a in which a viscous material such as a carbon-based polymer compound or silicone oil or a viscoelastic material such as asphalt or a rubber material is enclosed, and a rear end of the cylinder 50a. The upper end of a vertical support member 54 extending upward from a horizontal support member 52 fixed on the hysteretic vibration attenuating body 26 is connected to the section via a horizontal pin 56. Further, the viscous vibration attenuator 50 includes a piston 50b slidably accommodated in the cylinder 50a, and the upper beam portion 20 is provided at the tip of a piston rod 50c extending forward from the piston 50b. A vertical support member 58 that is vertically suspended from the lower end of the vertical support member 58 is connected via a horizontal pin 60.

  On the other hand, as shown in FIG. 3, the hysteresis type vibration attenuator 26 is a rectangular parallelepiped vibration energy absorber 28 whose upper and lower surfaces are formed in a rectangular shape, and is fixed to the upper and lower surfaces of the vibration energy absorber 28. The rectangular mounting plates 30 and 32 are formed.

  As shown in FIG. 4, the vibration energy absorber includes a laminated body 34 formed by alternately laminating vibration absorbing layers such as rubber and metal layers in the vertical direction, and an upper surface and a lower surface of the laminated body 34. Two metal plates 36 and 38 vulcanized and bonded are provided, and these metal plates 36 and 38 are fixed to the mounting plates 30 and 32 by a plurality of bolts 40, respectively. Further, the vibration energy absorber 28 includes cylindrical lead plugs 42 and 44, and the lead plugs 42 and 44 are embedded in the laminate 34 with both end faces exposed from the surfaces of the metal plates 36 and 38. Has been.

  The mounting plates 30 and 32 are formed to be slightly larger than the vibration energy absorber 28. The lower plates of the mounting plates 30 and 32 are attached to the outer edges of the mounting plates 30 and 32 by bolts (not shown). A plurality of mounting holes 46 (see FIG. 3) are drilled to be fixed to the upper surface of the portion 16 and the lower surface of the horizontal support member 52.

  In the vibration damping device according to the ninth embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, and thereby the upper beam portion 20. Tries to make a relative displacement in the horizontal direction, a viscous resistance of a viscous body or a viscoelastic body acts on the piston 50b of the viscous vibration attenuator 50, and the horizontal displacement of the upper beam portion 20 is suppressed by this viscous resistance. At this time, the vibration energy is absorbed by the lead plugs 42 and 44 of the vibration energy absorber 28 of the hysteretic vibration attenuator 26 constituting the Maxwell type vibration attenuator mechanism together with the viscous vibration attenuator 50. The

  Therefore, in the above-described ninth embodiment, it is possible to improve the vibration control performance without increasing the surface area of the piston 50b, thereby increasing the size of the device (increasing the diameter of the cylinder 50a), or constructing space. It is possible to improve the vibration control performance without greatly blocking.

  In the ninth embodiment described above, the hysteretic vibration attenuator 26 connected to the viscous vibration attenuator 50 is connected to the lower beam portion 16, but the piston rod 50c of the viscous vibration attenuator 50 is vertically supported. The hysteretic vibration attenuator 26 connected to the lower beam portion 16 via the member 54 and connected to the viscous vibration attenuator 50 may be connected to the upper beam portion 20.

  FIG. 22 is a front view of the vibration damping device according to the tenth embodiment of the present invention, and FIG. 23 is a diagram showing a detailed configuration of the G section shown in FIG. 22 and 23, a damping device 62 according to a tenth embodiment of the present invention is a dish-like viscous material storage tank 66 (FIG. 22) fixed on a lower beam portion 16 of a structure via a support base 64. 23), and a viscoelastic body 68 such as a gel made of a viscous material such as a carbon-based polymer compound, silicone oil, or asphalt rubber is stored in the viscous body storage tank 66.

  The vibration control device 62 includes a support member 70 that is suspended from the upper beam portion 20 of the structure toward the viscous body storage tank 66, and an in-plane vibration suppression plate 72 is provided at the lower end of the support member 70. Is held horizontally through the support member 74, the flange plate 76, the hysteretic vibration damper 26, the flange plate 78, and the support member 80. The in-plane vibration suppressing plate 72 is formed of a steel plate or the like and is immersed in the viscous body or viscoelastic body 68 described above.

  As shown in FIG. 3, the hysteretic vibration attenuator 26 is a rectangular parallelepiped vibration energy absorber 28 whose upper surface and lower surface are formed in a rectangular shape, and is fixed to the upper surface and lower surface of the vibration energy absorber 28. It is composed of rectangular mounting plates 30 and 32.

  As shown in FIG. 4, the vibration energy absorber 28 includes a laminated body 34 formed by alternately laminating vibration absorbing layers such as rubber and metal layers in the vertical direction, and an upper surface and a lower surface of the laminated body 34. Two metal plates 36 and 38 vulcanized and bonded to each other, and these metal plates 36 and 38 are fixed to the mounting plates 30 and 32 by a plurality of bolts 40, respectively. Further, the vibration energy absorber 28 includes cylindrical lead plugs 42 and 44, and these lead plugs 42 and 44 are exposed in the vibration energy absorber 34 by exposing both end surfaces thereof from the surfaces of the metal plates 36 and 38. It is buried in.

  The mounting plates 30 and 32 are formed to be slightly larger than the attenuator main body 28, and the above-described flange plates are attached to the outer edge portions of the mounting plates 30 and 32 by bolts (not shown). A plurality of mounting holes 46 (see FIG. 3) are drilled for fixing to 78,76.

  The hysteresis type vibration attenuating body 26 constitutes a Maxwell type vibration attenuating mechanism in cooperation with a viscous type vibration attenuating mechanism including a viscous body storage tank 66, an in-plane vibration suppressing plate 72, and the like.

  In the vibration damping device 62 according to the tenth embodiment of the present invention configured as described above, for example, interlayer deformation due to seismic force occurs between the lower beam portion 16 and the upper beam portion 20, and thereby the upper beam portion. When 20 is about to be displaced in the horizontal direction, the viscous resistance of the viscous body 68 acts on the in-plane vibration suppressing plate 72, and the horizontal displacement of the upper beam portion 20 is suppressed by this viscous resistance. At this time, the vibration energy is absorbed by causing the lead plugs 42 and 44 of the vibration energy absorber 28 of the hysteretic vibration attenuator 26 to undergo shear deformation according to the reaction force of the in-plane vibration suppressing plate 72.

  Therefore, in the tenth embodiment described above, the vibration control performance can be improved without increasing the surface area of the in-plane vibration suppression plate 72, thereby improving the vibration control performance without increasing the size of the device. Can be achieved.

  In the tenth embodiment described above, the Maxwell type vibration attenuating mechanism is configured by interposing the hysteresis type vibration attenuating body 26 between the in-plane vibration suppressing plate 72 and the support member 80, but is shown in FIG. As in the eleventh embodiment, the in-plane vibration suppression plate 72 is directly attached to the lower end of the column member 80, and the hysteretic vibration attenuator 26 is fixed to the column member 80 and the upper horizontal plate 82 and the viscous material reservoir 66. The same effect can be obtained even if a forked vibration damping mechanism is formed between the lower horizontal plate 84 and the lower horizontal plate 84 fixed thereto.

  In each of the first to eleventh embodiments described above, it has been described that the vibration energy absorber 28 of the hysteretic vibration attenuator 26 is formed by alternately laminating vibration absorption layers such as rubber and metal layers. However, the vibration energy absorber 28 of the hysteretic vibration attenuator 26 may be formed of a single-layer rubber body as shown in FIG. 25, or may be formed of mild steel or a honeycomb structure material.

  In addition, the present invention is not only applied to a building structure such as a building, but it is also effective in terms of earthquake resistance to be applied to a civil engineering structure such as a railway viaduct or a work piece or a ramen structure such as an automatic rack warehouse. It is clear that. Furthermore, it is needless to say that the present invention is not applied only to a single frame, and it is also effective to install it between the first floor and several floors (for example, the fourth floor).

It is a front view of the damping device concerning a 1st embodiment of the present invention. It is sectional drawing which follows the AA line of FIG. FIG. 3 is an exploded perspective view of the hysteresis type vibration attenuator shown in FIGS. 1 and 2. FIG. 3 is a longitudinal sectional view of the hysteresis type vibration attenuator shown in FIGS. 1 and 2. It is a figure which shows typically the damping device shown in FIG. It is a front view of the damping device concerning a 2nd embodiment of the present invention. It is sectional drawing which follows the BB line of FIG. It is a front view of the damping device concerning a 3rd embodiment of the present invention. It is sectional drawing which follows the CC line of FIG. It is a front view of the vibration damping device which concerns on the 4th Embodiment of this invention. It is sectional drawing which follows the DD line | wire of FIG. It is a front view of the vibration damping device which concerns on the 5th Embodiment of this invention. It is sectional drawing which follows the EE line | wire of FIG. It is a figure which shows typically the damping device shown in FIG.12 and FIG.13. It is a front view of the vibration damping device which concerns on the 6th Embodiment of this invention. It is sectional drawing which follows the FF line | wire of FIG. It is a front view of the damping device concerning a 7th embodiment of the present invention. FIG. 18 is a cross-sectional view of the viscous vibration attenuator shown in FIG. 17. It is a front view of the vibration damping device which concerns on the 8th Embodiment of this invention. FIG. 20 is a cross-sectional view of the viscous vibration attenuator shown in FIG. 19. It is a front view of the damping device concerning a 9th embodiment of the present invention. It is a front view of the vibration damping device which concerns on the 10th Embodiment of this invention. It is a figure which shows the detailed structure of the G section shown in FIG. It is a front view of the damping device concerning an 11th embodiment of the present invention. It is a figure which shows the other Example of a hysteresis type vibration attenuator. It is a front view of the conventional damping device. FIG. 27 is a longitudinal sectional view of the vibration control device shown in FIG. 26.

Explanation of symbols

12, 68 Viscous material 14, 66 Viscous material storage tank 16 Lower beam portion 18, 72 In-plane vibration suppression plate 20 Upper beam portion 26 Hysteretic vibration attenuator 28 Vibration energy absorber 30, 32 Mounting plate 34, 36 Metal plate 42, 44 Lead plug 50, 100, 118 Viscous vibration damper 50a Cylinder 50b Piston 50c Piston rod 76, 78 Flange plate

Claims (3)

Viscous material storage tank installed on the lower beam part of the structure, and a surface suspended from the upper beam part of the structure and immersed in the viscous material or viscoelastic body stored in the viscous material storage tank In the vibration control device with the internal vibration suppression plate,
One end surface of a hysteresis type vibration attenuator is fixed to the in-plane vibration suppressing plate or the viscous material reservoir, and the other end surface of the hysteresis type vibration attenuator opposite to the one end surface is connected to the viscous material reservoir or the in-plane A vibration control device characterized in that a forked vibration damping mechanism is formed by being fixed to a vibration suppression plate. A viscous vibration attenuator is arranged between the lower beam and the upper beam of the structure, and the horizontal displacement of the structure in the horizontal direction during the earthquake of the structure is suppressed through this viscous vibration attenuator. In the vibration control device configured as follows,
A hysteretic vibration attenuator is connected to the viscous vibration attenuator in a series or parallel relationship to form a coupling mechanism, and one end of the coupling mechanism is coupled to the lower beam portion, opposite to the one end. The other end of the coupling mechanism on the side is connected to the upper beam part.   A vibration control structure using the vibration control device according to claim 1 or 2 as means for absorbing vibration energy input to a frame of the structure.

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