JP6130256B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device used in a building such as a house.

  Various types of dampers, such as an oil damper, a viscous damper, a steel damper, and a friction damper, have been put to practical use as vibration dampers provided in buildings to absorb vibration energy during an earthquake. As this type of damping device, Patent Document 1 describes a damping damper that absorbs vibration energy by torsional deformation that occurs in a tubular elastic-plastic member such as a steel pipe.

  The vibration damper is provided between the upper floor beam and the lower floor beam, and includes a top plate fixed to the upper floor beam and a base plate fixed to the lower floor beam. A steel pipe is joined to the fixed plate depending from the top plate. A torsion plate is fixed to both end faces of the steel pipe, and a steel rod is disposed between the lower ends of the torsion plate. When this steel bar is arranged between two parallel plates erected on the base plate, when a horizontal relative displacement occurs between the beams, the steel bar and the torsion plate rotate with respect to the base plate, Twist deformation occurs in the steel pipe.

Japanese Patent Laid-Open No. 5-239952

  In the above vibration damper, the top plate is fixed to the upper beam, the base plate is fixed to the lower beam, and the steel pipe is supported between them. Becomes too big. In addition, the moment transmitted to the steel pipe is significantly increased. For this reason, it is difficult to appropriately transmit the moment to the steel pipe, and thus it is difficult to obtain a good vibration damping effect.

  An object of this invention is to provide the damping device which can acquire the favorable damping effect.

  The vibration damping device of the present invention is a vibration damping device installed between a pair of upper and lower beams of a building that supports a load from the beam by one or a plurality of columns, and is disposed between the pair of upper and lower beams. A plurality of longitudinal members connected to the beam, one or a plurality of transverse members provided in a state of intersecting the longitudinal members, and a tubular member provided at each of the intersecting portions of the longitudinal members and the transverse members. A longitudinal member is rigidly joined to one end side of the member, and a cross member is rigidly joined to the other end side of the tubular member.

  According to this vibration damping device, a plurality of longitudinal members are provided between a pair of upper and lower beams, and a transverse member is installed between these longitudinal members. A tubular member is provided at each of the intersecting portions of the cross member and the vertical member, and the vertical member and the cross member are rigidly joined to one end side and the other end side of the tubular member, respectively. Therefore, even when the distance between the beams is large, for example, by appropriately determining the distance between the vertical members, the distance between the horizontal members, or the position of the horizontal member with respect to the pair of upper and lower beams, the appropriate size for the tubular member The moment can be transmitted. As a result, the tubular member can be appropriately twisted, and energy is absorbed by this twist. Therefore, a good vibration damping effect can be obtained.

  When the horizontal displacement of a pair of upper and lower beams occurs, the angle that the vertical member makes with the horizontal plane changes due to the relative displacement of the upper and lower ends of the vertical member, and the angle that the horizontal member makes with the horizontal surface is It does not change. According to this configuration, since the angle at which the longitudinal member and the transverse member intersect changes, the tubular member can be twisted more reliably and a better vibration damping effect can be obtained.

  The longitudinal member is pin-bonded to one beam and is vertically roller-bonded to the other beam having a bending rigidity smaller than the bending rigidity of the one beam. According to this configuration, since the longitudinal member is connected between the pair of beams without supporting the axial force and moment, the vibration damping device functions as a device that reduces only vibration without bearing a load. Further, since the vertical member is pin-joined to one beam and the vertical member is joined to the other beam by the vertical roller, the vertical member is rotated by the horizontal displacement of the beam. Thereby, energy is intensively transmitted to the tubular member, and the energy absorbing ability of the tubular member can be sufficiently exhibited. In particular, the vertical member is pin-bonded to one beam with high bending rigidity and the vertical member is vertically roller-bonded to the other beam with low bending rigidity. It is possible to prevent bending deformation due to force or the like, and the vibration damping effect is sufficiently exhibited.

  The vertical member is pin-bonded to the one beam in a state where a gap is provided between the vertical members. According to this configuration, the vertical member is pin-bonded to one of the beams in a state where the vertical member can be easily tilted to the left and right. Therefore, the longitudinal member rotates without receiving a large resistance with the relative displacement of the beam, and thereby the displacement can be transmitted to the tubular member satisfactorily.

  A plurality of cross members are provided, and the cross member has a first cross member provided close to one beam and a second cross member provided close to the other beam. According to this configuration, even when the longitudinal member is long due to the large interval between the beams, the first cross member is close to one beam and the second cross member is close to the other beam. The distance to the intersection is also shortened, and the moment can be reliably transmitted to the tubular member.

  At least three cross members are provided and are arranged at equal intervals. By arranging three or more cross members at equal intervals, the relative displacement generated between the beams can be evenly distributed, and a better vibration damping effect can be obtained by the cooperation of the tubular members.

  At least three vertical members are provided and are arranged at equal intervals. By arranging three or more vertical members at equal intervals, the relative displacement generated between the beams can be evenly distributed, and a better vibration damping effect can be obtained by the cooperation of the tubular members.

  Each of the vertical member and the cross member has a U-shaped cross-sectional shape, and the vertical member and the cross member intersect so that the open surfaces face each other. According to this configuration, the groove portion of the longitudinal member and the groove portion of the transverse member communicate with each other, and an internal space is formed between the longitudinal member and the transverse member. Since the tubular member can be provided using this internal space, the vibration damping device in the out-of-plane direction can be slimmed.

  The shaft misalignment prevention plate is disposed between the longitudinal member and the transverse member and has a through hole through which the tubular member passes. The shaft misalignment prevention plate is joined to either the longitudinal member or the transverse member. The axial deviation prevention plate prevents the axial center of the tubular member from shifting. Therefore, the tubular member can be twisted and deformed satisfactorily.

  According to the present invention, a good vibration damping effect can be obtained.

It is a front view which shows the frame provided with the damping device which concerns on 1st embodiment of this invention. FIG. 2 is a front view of the vibration damping device in FIG. 1. It is a front view which shows the junction part with respect to the lower beam of the damping device of FIG. It is a front view which shows the junction part with respect to the upper beam of the damping device of FIG. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is a figure which shows typically the deformation | transformation of the damping device of FIG. 2 when a horizontal force is input into the building. (A) is a front view which shows the junction part with respect to the lower beam of the damping device which concerns on a 1st modification, (b) is sectional drawing which follows the VIIIb-VIIIb line | wire of (a). (A) is a front view which shows the junction part with respect to the upper beam of the damping device which concerns on a 1st modification, (b) is sectional drawing which follows the IXb-IXb line | wire of (a). (A) is a front view which shows the junction part with respect to the upper beam of the damping device which concerns on a 2nd modification, (b) is sectional drawing which follows the Xb-Xb line | wire of (a). It is a front view which shows the frame provided with the damping device which concerns on 2nd embodiment of this invention. It is a top view of the damping device of FIG. It is sectional drawing which follows the XIII-XIII line | wire of FIG. It is a front view which expands and shows the upper part of the damping device of FIG. It is sectional drawing which follows the XV-XV line | wire of FIG. It is a figure which shows typically the deformation | transformation of the damping device of FIG. 12 in case a horizontal force is input into a building.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

  As shown in FIG. 1, the vibration damping device 1 of the present embodiment is provided in a building X having, for example, a steel frame A, and is effective when vibration occurs in the building X due to, for example, an earthquake. It is a device for attenuating automatically. Examples of the building X in which the vibration control device 1 is provided include a detached house or a low-rise apartment house. Although the following description demonstrates the case where the damping device 1 is provided in the 1st-floor part of the building X, the damping device 1 may be provided in the 2nd-floor part of the building X, or the upper floor.

  The frame A has a ramen structure, and a pair of concrete foundations (lower beams) 2 extending in the horizontal direction D and a pair of standing foundations 2 spaced apart from each other in the horizontal direction D by a predetermined distance. Columns 3 and 3 and beams (upper beams) 4 installed between the pair of columns 3 and 3 are provided. The continuous foundation 2 and the beam 4 are a pair of upper and lower beams. By incorporating the vibration damping device 1 into the frame A, a vibration damping structure B is formed. The housing provided with the vibration damping device 1 is not limited to the case where the pillar winning method is used like the frame A, but may be the beam winning method.

  The continuous foundation 2 which is one horizontal material is, for example, a cloth foundation. The columns 3 and 3 are made of, for example, a square steel pipe. The other horizontal member 4 is made of, for example, H-section steel. Both ends of the beam 4 are joined to the columns 3 and 3. The columns 3 and 3 support the load transmitted from the beam 4. The continuous foundation 2 and the beam 4 extend parallel to each other so as to face each other in the vertical direction. That is, the continuous foundation 2 and the beam 4 extend in the same direction, that is, the horizontal direction D. The bending rigidity of the continuous foundation 2 is larger than the bending rigidity of the beam 4. That is, the beam 4 has a bending rigidity smaller than that of the continuous foundation 2.

  The damping structure B includes a continuous foundation 2, columns 3 and 3, a beam 4, and a damping device 1.

  As shown in FIGS. 1 and 2, the vibration damping device 1 is provided between the continuous foundation 2 and the beam 4. More specifically, the vibration damping device 1 has a panel shape arranged along the horizontal direction D and the vertical direction. In other words, the vibration damping device 1 is a load-bearing panel arranged in a plane formed by the continuous foundation 2, the columns 3 and 3, and the beam 4.

  The vibration damping device 1 is disposed between the beam 4 and the continuous foundation 2 and is connected to the beam 4 and the continuous foundation 2 and intersects with the vertical members 6 and 6. And two (upper and lower) cross members 7 and 8 provided. The vertical member 6 is made of, for example, an H-shaped steel, and extends along the vertical direction. The web portion 6c of the vertical member 6 is disposed along the horizontal direction D and the vertical direction.

  Of the two cross members 7 and 8, the lower cross member (first cross member) 8 is provided close to the beam 4, and the upper cross member (second cross member) 7 is It is provided close to the continuous foundation 2. Each of the upper cross member 7 and the lower cross member 8 has main body portions 7c and 8c made of, for example, H-shaped steel, and end portions 7a and 8a joined to the left and right ends of the main body portions 7c and 8c. . The main body portions 7 c and 8 c are disposed between the pair of vertical members 6 and 6. The end portions 7a and 8a are joined to the longitudinal members 6 and 6 through a steel pipe 10 described later. The cross members 7 and 8 extend in the horizontal direction D, for example, and extend in a direction orthogonal to the vertical members 6 and 6. The web portions 7d and 8d of the main body portions 7c and 8c are arranged along the horizontal direction D and the vertical direction.

  First, the joining structure of the longitudinal members 6 and 6 to the pair of upper and lower beams 4 and 2 will be described. As shown in FIGS. 3 and 5, a rectangular lower end plate 6 b is joined to the lower end of the longitudinal member 6. The lower end plate 6b extends in the horizontal direction. A rectangular plate 13 is interposed between the lower end plate 6 b and the upper surface 2 a of the continuous foundation 2. The plate 13 is smaller than the lower end plate 6b and is arranged to be biased toward one side (left side in FIGS. 3 and 5) of the lower end plate 6b in the horizontal direction D. Thereby, a gap 20 is provided between the lower end plate 6 b and the upper surface 2 a of the continuous foundation 2. That is, the plate 13 functions as a spacer for maintaining the gap 20.

  Two anchor bolts or the like embedded in the continuous foundation 2 penetrate the lower end plate 6 b and the plate 13 and are fastened by nuts or the like, so that the lower end portion of the vertical member 6 is pin-joined to the continuous foundation 2. The anchor bolt and the nut are fastening members 14 for joining the lower end portion of the longitudinal member 6 to the continuous foundation 2 and are arranged on both sides (both sides in the out-of-plane direction) of the web portion 6c of the longitudinal member 6 (FIG. 5). reference).

  As shown in FIG. 4, a rectangular upper end plate 6 a is joined to the upper end of the longitudinal member 6. The upper end plate 6a extends in the horizontal direction. A rectangular plate 17 is interposed between the upper end plate 6 a and the lower flange 4 a of the beam 4. The plate 17 is smaller than the upper end plate 6a and is arranged to be biased to one side (left side in FIG. 4) of the upper end plate 6a in the horizontal direction D. The size and arrangement of the plate 17 with respect to the upper end plate 6a are substantially the same as the size and arrangement of the plate 13 with respect to the lower end plate 6b (see FIG. 5). Thereby, a gap 21 is provided between the upper end plate 6 a and the flange 4 a below the beam 4. That is, the plate 17 functions as a spacer for maintaining the gap 21.

  Thus, the upper end plate 6 a faces the flange 4 a of the beam 4 via the gap 21. A through hole 23 is formed in the upper end plate 6 a, and a through hole 22 is formed in the plate 17 at a position overlapping the through hole 23. The through hole 23 and the through hole 22 communicate with each other. Bolts (shaft portions) 18 fixed to the flange 4a of the beam 4 are inserted through the through holes 23 and 22 and are fastened by nuts or the like.

  The through hole 23 and the through hole 22 have an inner diameter larger than the diameter of the bolt 18, so that the upper end plate 6 a and the plate 17 can move relative to the bolt 18, that is, the beam 4 in the vertical direction. Yes. A part of the bolt 18 disposed in the through hole 23 and the through hole 22 may not be formed with a male screw, or may be formed with a male screw.

  With the above configuration, the upper portion of the vibration damping device 1 is joined to the beam 4 by so-called vertical roller joining that transmits a horizontal force from the beam 4 and does not transmit a vertical force. More specifically, when the beam 4 is displaced in the horizontal direction D with respect to the continuous foundation 2, the upper end plates 6a and 6a are rotated by the rotation of the longitudinal members 6 and 6 accompanying the horizontal displacement, and the shaft portion is also rotated therewith. The bolt 18 moves up and down in the through-hole 23 of the upper end plate 6a and the through-hole 22 of the plate 17, so that the load in the vertical direction is not transmitted and only the rotational displacement can be transmitted.

  Next, the joining structure of the cross members 7 and 8 to the vertical members 6 and 6 will be described. As shown in FIG. 2, a steel pipe (tubular member) 10 is provided at each of the intersections between the longitudinal members 6, 6 and the transverse members 7, 8. The steel pipes 10 are arranged so that their axial centers face in the out-of-plane direction. The longitudinal member 6 is rigidly joined to one end side of the steel pipe 10 by welding or the like, and the transverse member 7 or the transverse member 8 is rigidly joined to the other end side of the steel pipe 10 by welding or the like.

  6 is a cross-sectional view taken along the line VI-VI in FIG. That is, in FIG. 6, the joining structure of the lower cross member 8 is shown. As shown in FIGS. 3 and 6, rectangular first plates 11 and 11 are welded to the front and back surfaces of the web portion 6 c of the longitudinal member 6. Second plates 12 and 12 are disposed on one side and the other side of the longitudinal member 6 in the out-of-plane direction. The second plates 12 and 12 are joined to both ends of the flange portion 8b of the cross member 8 by welding or the like. The first plate 11 and the second plate 12 face each other in the out-of-plane direction. In other words, the longitudinal member 6 is disposed between the second plates 12 and 12.

  One end of the steel pipe 10 is rigidly joined to the first plate 11 by welding or the like, and the other end of the steel pipe 10 is rigidly joined to the second plate 12 by welding or the like. The axial centers of the steel pipes 10 and 10 arranged on the front surface side and the back surface side of the web portion 6c of the longitudinal member 6 are coincident (see the axial center L in FIG. 6). A plurality of steel pipes 10 (eight in the vibration damping device 1 as a whole) provided at the intersections of the longitudinal members 6 and 6 and the transverse members 7 and 8 are twisted and deformed when the longitudinal displacements of the longitudinal members 6 and 6 occur. By doing so, the energy of the horizontal force applied to the building X is absorbed.

  The joining structure of the upper cross member 7 with respect to the longitudinal members 6 and 6 is the same as the joining structure of the cross member 8 described above.

  The cross members 7 and 8 are joined to the vertical members 6 and 6 in the following procedure. First, the steel pipe 10 is joined to the second plate 12 by welding or the like. Next, the first plate 11 is joined to the steel pipe 10 by welding or the like. Next, of the integrated second plate 12, steel pipe 10, and first plate 11, the first plate 11 is joined to the web portion 6c of the longitudinal member 6 by welding or the like. The 1st plate 11 protrudes in the up-and-down direction rather than the upper and lower ends of the 2nd plate 12 so that welding to web part 6c becomes easy. And after performing the same joining operation | work to the surface and back surface of the web part 6c, the flange part 8b of the cross member 8 is joined by welding etc. with respect to the 2nd plates 12 and 12 which oppose, 12 are connected.

  As shown in FIG. 7, in the vibration damping device 1, for example, when a horizontal force acts on the building X and relative displacement in the horizontal direction D between the continuous foundation 2 and the beam 4 occurs, When the upper and lower ends (specifically, the upper end plate 6a and the lower end plate 6b) are relatively displaced, the vertical members 6 and 6 are rotated, and the horizontal members 7 and 8 are kept in a horizontal state. In other words, the angle formed by the vertical members 6 and 6 with respect to the horizontal plane changes, but the angle formed by the horizontal members 7 and 8 with respect to the horizontal plane does not change, and the cross members 7 and 8 maintain a posture. ing. At this time, the steel pipe 10 that joins between the longitudinal members 6 and 6 and the transverse members 7 and 8 is twisted and deformed.

  According to the vibration damping device 1 having the above configuration, a pair of longitudinal members 6 and 6 are provided between the pair of upper and lower beams 2 and 4, and the transverse members 7 and 8 are installed between the longitudinal members 6 and 6. The A steel pipe 10 is provided at each of the intersecting portions of the cross members 7 and 8 and the longitudinal members 6 and 6, and the longitudinal members 6 and 6 and the cross members 7 and 8 are rigidly joined to one end side and the other end side of the steel pipe 10, respectively. The Therefore, even when the distance between the beams 2 and 4 is large, for example, the distance between the longitudinal members 6 and 6, the distance between the transverse members 7 and 8, or the position of the transverse members 7 and 8 with respect to the pair of upper and lower beams 2 and 4 By appropriately determining etc., a moment having an appropriate magnitude can be transmitted to the steel pipe 10. As a result, the steel pipe 10 can be appropriately twisted, and energy is absorbed by this twist. Therefore, a good vibration damping effect can be obtained.

  For example, when a horizontal force acts on the building X and a relative displacement between the continuous foundation 2 and the beam 4 in the horizontal direction D occurs, the angle formed by the vertical members 6 and 6 with respect to the horizontal plane changes, Since the angle formed by the members 7 and 8 with respect to the horizontal plane does not change, the angle at which the longitudinal members 6 and 6 and the cross members 7 and 8 intersect reliably changes (see FIG. 7). Therefore, the steel pipe 10 can be more reliably twisted and can absorb energy more favorably.

  Further, since the vertical members 6 and 6 are pin-bonded to the continuous foundation 2 having a large bending rigidity and are vertically roller-bonded to the beam 4 having a bending rigidity smaller than the bending rigidity of the continuous foundation 2, the vertical members 6 and 6 are used. Are connected between the pair of beams 2 and 4 without supporting axial force and moment. Therefore, the vibration damping device 1 functions as a device that reduces only vibration (horizontal load) without burdening the axial force. Since the vertical members 6 and 6 are pin-bonded to the continuous foundation 2 and the vertical members 6 and 6 are vertically roller-bonded to the beam 4, the vertical members 6 and 6 are bent by the axial force due to the horizontal displacement of the beam 4. It will rotate only by horizontal force without. Thereby, energy is transmitted intensively to the steel pipe 10, and the energy absorption ability of the steel pipe 10 can be sufficiently exhibited. In particular, the vertical members 6 and 6 are pin-bonded to the continuous foundation 2 having a large bending rigidity, and the vertical members 6 and 6 are vertically roller-bonded to the beam 4 having a low bending rigidity. It is possible to prevent bending deformation from occurring due to a reaction force from the apparatus and the vibration damping effect is sufficiently exhibited.

  Since the vertical members 6 and 6 are pin-bonded to the continuous foundation 2 with a gap 20 between the vertical members 6 and 6, the vertical members 6 and 6 can be easily tilted left and right. Pinned to the continuous foundation 2. Therefore, the vertical members 6 and 6 rotate without receiving a large resistance with the relative displacement of the beams 2 and 4, and thereby the displacement can be transmitted to the steel pipe 10 satisfactorily.

  Since the lower cross member 8 provided in the vicinity of the continuous foundation 2 and the upper cross member 7 provided in the vicinity of the beam 4 are provided, the distance between the beams 2 and 4 is large, and therefore the vertical member 6 is used. , 6 is long, the distance from each beam 2, 4 to the intersection is also shortened, and the moment can be reliably transmitted to the steel pipe 10.

  Furthermore, since the torsional deformation of the steel pipe 10 is used for energy absorption, the performance of the steel pipe 10 can be adjusted with all design elements such as the diameter, thickness, and axial length of the steel pipe 10. Thereby, an easy and flexible design is possible. Further, the performance of the vibration damping device 1 can be adjusted by the cross-sectional shape of the longitudinal member 6 or the transverse members 7 and 8.

  The configuration of the vibration damping device 1 has been described above, but the joining structure of the longitudinal member 6 and the transverse members 7 and 8 is not limited to the above structure. For example, as shown in FIGS. 8A and 8B, a plate-like flange portion 30 disposed on both sides in the out-of-plane direction of the longitudinal member 6 and a web portion 31 that connects the flange portions 30 to each other. The cross member 8A provided may be used. For example, as a joining structure for the continuous foundation 2, a fastening member 31 made of bolts and nuts may be provided only at one place in the center in the out-of-plane direction of the lower end plate 6b. It is good also as the shape which provided the narrow part 30a in the horizontal direction D center part of the flange part 30, and was made to hunch.

  As shown in FIGS. 9A and 9B, for example, as a joint structure to the beam 4, a sufficiently large gap 21B is provided without interposing a plate between the upper end plate 6a and the flange 4a of the beam 4. May be. In this case, the vertical roller joint can be formed by inserting the bolts 33 into the four positions of the upper end plate 6a and allowing the bolts 33 to move in the vertical direction with respect to the upper end plate 6a. The cross member 7B has the same configuration as the above-described cross member 8A.

  As shown in FIGS. 10A and 10B, a rectangular plate 36 is installed between a pair of longitudinal members 6, 6, and further between the plate 36 and the flange 4 a at the center of the beam 4. It is good also as a structure which pinched | interposed the plate 37. FIG. The gap 37 </ b> C can be secured by making the plate 37 smaller than the plate 36 and overlapping a part of the plate 36. Further, the upper end of the vibration damping device 1 is connected to the central portion of the beam 4 by inserting bolts 38 through the plate 36 and the plate 37. When the beam 4 is long, the central portion of the beam 4 is slightly bent, and when the horizontal force is applied, the beam 4 moves up and down by the amount of the bending. However, the plate 37 can follow the up and down movement, thereby It becomes movable and shows the same behavior as vertical roller joining.

  11 is a front view showing a frame provided with a vibration damping device 1D according to the second embodiment, FIG. 12 is a plan view of the vibration damping device 1D, and FIG. 13 is a cross section taken along line XIII-XIII in FIG. FIG. The vibration damping device 1D shown in FIGS. 11 to 13 is different from the vibration damping device 1 according to the first embodiment in that three (plural) vertical members 6D and six (plural) cross members 7D are provided. This is the point that these are arranged at equal intervals, and the steel material having a U-shaped cross-sectional shape is used as the longitudinal member 6D and the transverse member 7D. Eighteen steel pipes 10 are provided at the intersection between the vertical member 6D and the horizontal member 7D.

  In the vibration damping device 1D, the longitudinal member 6D and the transverse member 7D intersect so that the opened surfaces face each other. Thereby, the groove part of the vertical member 6D and the groove part of the cross member 7D communicate, and an internal space 50 (see FIG. 15) is formed between the vertical member and the cross member. As the longitudinal member 6D or the transverse member 7D, an existing grooved steel (channel material) may be used, or the longitudinal member 6D or the transverse member 7D is produced by roll forming or bending a steel plate. May be.

  The steel pipe 10 is disposed in the internal space 50, the bottom of the groove of the longitudinal member 6D is joined to one end of the steel pipe 10 by welding or the like, and the bottom of the groove of the cross member 7D is joined to the other end of the steel pipe 10 by welding or the like. Is done. Here, as shown in FIGS. 14 and 15, in consideration of welding work, a plate 46 is interposed between the steel pipe 10 and the longitudinal member 6D, and between the steel pipe 10 and the cross member 7D. The plate 47 is interposed.

  The vibration damping device 1D includes a shaft misalignment prevention plate 51 that is disposed between the longitudinal member 6D and the transverse member 7D and has a through hole 51a through which the steel pipe 10 passes. The shaft misalignment prevention plate 51 is disposed between the longitudinal member 6D and the transverse member 7D, and is joined to the opening end surface of the longitudinal member 6D by welding or the like. The steel pipe 10 is not joined to the shaft misalignment prevention plate 51, and the steel pipe 10 is rotatable with respect to the shaft misalignment prevention plate 51. The shaft misalignment prevention plate 51 may be joined to the opening end surface of the cross member 7D by welding or the like.

  As shown in FIG. 12, a rectangular plate 41 is joined to the upper end and the lower end of the longitudinal member 6 </ b> D, and a long plate 42 is installed between the plates 41. A plurality of bolts are inserted into the plate 41 and the plate 42, the lower end portion of the vibration damping device 1D is pin-joined, and the upper end portion of the vibration damping device 1D is joined to the vertical roller.

  Even with the vibration damping device 1D having the above configuration, for example, when a horizontal force acts on the building X and relative displacement in the horizontal direction D between the continuous foundation 2 and the beam 4 occurs, the upper and lower ends of the plurality of vertical members 6D are By relative displacement with respect to the continuous foundation 2, the vertical member 6 </ b> D rotates and the horizontal member 7 </ b> D maintains a horizontal state (see FIG. 16). In other words, the angle formed by the vertical member 6D with respect to the horizontal plane changes, but the angle formed by the horizontal member 7D with respect to the horizontal plane does not change, and the horizontal member 7D has a structure that maintains the posture. At this time, each steel pipe 10 that joins between the longitudinal member 6D and the transverse member 7D is twisted and deformed. This twist absorbs energy. Therefore, a good vibration damping effect can be obtained.

  Further, by arranging three or more cross members 7D at equal intervals, the relative displacement generated between the beams 2 and 4 can be evenly distributed, and a better vibration damping effect can be obtained by the cooperation of the steel pipes 10. it can.

  By arranging three or more longitudinal members 6D at equal intervals, the relative displacement generated between the beams 2 and 4 can be evenly distributed, and a better vibration damping effect can be obtained by the cooperation of the steel pipes 10.

  The groove portion of the vertical member 6D and the groove portion of the cross member 7D communicate with each other, and an internal space 50 is formed between the vertical member 6D and the cross member 7D. Therefore, the steel pipe 10 can be provided using the internal space 50. Further, the vibration damping device 1D in the out-of-plane direction can be slimmed. The vibration damping device 1D that is made slim is particularly suitable for low-rise houses.

  Since the shaft misalignment prevention plate 51 prevents the axial center of the steel pipe 10 from shifting, the steel pipe 10 can be favorably twisted and deformed.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. Various modifications may be made in the first embodiment. For example, three or more vertical members 6 may be provided, and three or more cross members 7 and 8 may be provided. In that case, you may arrange | position the vertical member 6 or the horizontal members 7 and 8 at equal intervals.

  You may connect the plates 12 and 12 arrange | positioned at the both sides of the vertical member 6 with one steel pipe. In this case, a through hole through which the steel pipe penetrates is formed in the vertical member (for example, the web portion 6c), and the central portion in the axial direction of the steel pipe can be joined to the through hole by welding or the like.

  You may employ | adopt the grooved steel which has U-shaped cross-sectional shape as a vertical material or a horizontal material of the damping panel 1 of 1st embodiment.

  In the second embodiment, various modifications may be added. For example, two cross members 7D may be provided, and each cross member 7D may be disposed at a position close to the upper beam 4 and a position close to the lower beam (such as the continuous foundation 2). A plurality of cross members 7D may be provided at a position close to the upper beam 4 and a position close to the lower beam (such as the continuous foundation 2). You may arrange | position more cross members 7D adjacent to the beam of smaller bending rigidity than the cross member adjacent to the beam of larger bending rigidity.

  DESCRIPTION OF SYMBOLS 1 ... Damping device, 2 ... Continuous foundation (lower beam, one beam), 3 ... Column, 4 ... Beam (upper beam, the other beam), 6 ... Vertical member, 6D ... Vertical member, 7 ... Cross member ( Second cross member), 7D ... Cross member, 8 ... Cross member (first cross member), 10 ... Steel pipe (tubular member), 51 ... Axis deviation prevention plate, 51a ... Through hole, B ... Damping structure, D ... Horizontal direction, X ... Building.

Claims (9)

A vibration damping device installed between a pair of upper and lower beams of a building that supports a load from a beam by one or more columns,
A plurality of vertical members arranged between the pair of upper and lower beams and connected to the pair of beams;
One or a plurality of cross members provided in a state of intersecting the vertical members,
A tubular member provided at each of the intersecting portions of the longitudinal member and the transverse member,
The vibration control device, wherein the longitudinal member is rigidly joined to one end side of the tubular member, and the transverse member is rigidly joined to the other end side of the tubular member. When the horizontal displacement of the pair of upper and lower beams occurs, the angle formed by the vertical member with respect to the horizontal plane changes due to the relative displacement of the upper and lower ends of the vertical member, and the horizontal member changes with respect to the horizontal plane. The vibration control device according to claim 1, wherein the angle formed by the lever does not change. 3. The vertical member according to claim 1, wherein the vertical member is pin-bonded to one beam and is vertically roller-bonded to the other beam having a bending rigidity smaller than the bending rigidity of the one beam. Damping device. The said vertical member is pin-joined to the said one beam in the state which provided the clearance gap between one beam, The damping device as described in any one of Claims 1-3 characterized by the above-mentioned. A plurality of the cross members are provided,
The said cross member has the 1st cross member provided in the vicinity of one beam, and the 2nd cross member provided in the vicinity of the other beam of Claim 1-4 characterized by the above-mentioned. The vibration damping device according to any one of the above. The vibration control device according to any one of claims 1 to 5, wherein at least three cross members are provided and arranged at equal intervals. The vibration control device according to any one of claims 1 to 6, wherein at least three vertical members are provided and arranged at equal intervals. Each of the vertical member and the cross member has a U-shaped cross-sectional shape,
The said vertical member and the said cross member cross | intersect so that the open surface may face, The damping device as described in any one of Claims 1-7 characterized by the above-mentioned. An axial misalignment prevention plate disposed between the longitudinal member and the transverse member and having a through hole through which the tubular member passes;
9. The vibration damping device according to claim 8, wherein the shaft misalignment prevention plate is joined to one of the longitudinal member and the transverse member.

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