JP5153440B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device, and more particularly to a vibration damping device that is built in a wall of a building such as a wooden house and configured to suppress vibrations of the building.

  For example, as a conventional vibration damping device, there is a device that suppresses horizontal vibration of a building by a damping force of a hydraulic damper (see, for example, Patent Document 1).

  This type of vibration control device is composed of an upper beam, a lower beam, a frame made of a pair of columns fixed to the wall of the building, an upper transmission member fixed to the upper beam, and a lower side fixed to the lower beam. It is comprised from the transmission member and the hydraulic damper mounted between the upper side transmission member and the lower side transmission member.

When the vibration caused by the earthquake is propagated to the building, the vibration damping device causes a relative displacement in the horizontal direction between the upper transmission member and the lower transmission member, and the distance between both ends of the hydraulic damper is in the proximity direction or the separation direction. A damping force is generated along with the change to dampen the vibration of the building.
JP 2002-70357 A

  In the vibration damping device configured as described above, the height from the floor surface to the ceiling differs depending on each building. Therefore, the height of the frame and the height of the upper and lower transmission members at each construction site The dimensions were adjusted. Since such a construction work is performed by a craftsman such as a carpenter, the frame body and the upper and lower transmission members are made of wood such as a structural plywood so that the dimensions can be easily adjusted.

  However, if the rigidity of the upper and lower transmission members is weak, the upper and lower transmission members themselves will be deformed, making it difficult for vibrations due to earthquakes to be transmitted to the hydraulic damper, reducing the stroke of the hydraulic damper relative to the building amplitude. By doing so, the original damping effect may not be sufficiently obtained.

  In the case of a medium-scale earthquake with relatively low acceleration, the upper and lower transmission members bend, making it difficult to transmit the force that pushes the piston rod of the hydraulic damper in the vibration direction. Since the stroke for generating the pressure cannot be obtained, the original damping performance may not be exhibited.

  Therefore, in view of the above circumstances, an object of the present invention is to provide a vibration damping device that solves the above problems.

  In order to solve the above problems, the present invention has the following means.

  The present invention provides a vibration damping device that applies a damping force to a horizontal relative displacement between an upper beam and a lower beam, an upper transmission member that transmits the horizontal displacement of the upper beam, and a horizontal beam of the lower beam. A lower transmission member configured to transmit a displacement in a direction, and one end of the upper beam or the lower beam is provided in contact with the other, and the other end is in contact with one of the upper transmission member or the lower transmission member. A plate member for adjusting the height position of the transmission member or the lower transmission member, at least two through holes penetrating in the vertical direction of the plate member, and one end side of the plate member of the upper transmission member or the lower transmission member An insertion hole provided in a horizontal portion in contact with the insertion hole provided at a position facing the through hole, and penetrating the through hole and the insertion hole, and either the upper transmission member or the lower transmission member is connected to the upper beam or Bolts fixed to the lower beam A gap filling member inserted into a gap between at least one horizontal portion of the upper transmission member or the lower transmission member and a column facing a side surface of the plate member; the upper transmission member and the lower transmission; The above-mentioned problem is solved by providing a damper that is provided between the members and generates a damping force according to the relative displacement between the upper transmission member and the lower transmission member.

  According to the present invention, since the upper transmission member or the lower transmission member is fixed to the upper beam or the lower beam via the plate material, the height can be easily adjusted by the plate material, and the upper or lower side can be adjusted by the gap filling member. The movement of the transmission member in the horizontal direction can be minimized, and the damper can be stroked sufficiently to obtain a great vibration damping effect.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a front view showing an embodiment of a vibration damping device according to the present invention. FIG. 2 is an enlarged longitudinal sectional view showing the lower connection mechanism. FIG. 3 is an enlarged vertical sectional view showing the upper connection mechanism. In addition, the structure shown in FIG. 1 thru | or FIG. 3 illustrates the case where it attaches to the wall part of the building constructed | assembled by the wooden conventional construction method.

  As shown in FIG. 1, the vibration damping device 10 includes a lower beam 30 fixed to the upper surface of a concrete base (foundation) 20, a pair of columns 40 and 50 extending above the lower beam 30, The upper beam 60 horizontally mounted on the upper ends of 40 and 50, the upper transmission member 70 fixed to the lower surface of the upper beam 60, the plate member 80 for height adjustment fixed to the upper surface of the lower beam 30, and the plate member 80 The lower transmission member 90 is fixed to the upper end of the upper transmission member, and the hydraulic damper 100 is connected between the upper transmission member 70 and the lower transmission member 90. Further, the vibration damping device 10 includes an upper connection mechanism 200 that couples the upper transmission member 70 to the upper beam 60 and a lower connection mechanism 300 that couples the lower transmission member 90 to the lower beam 30.

  The upper transmission member 70 is composed of a steel frame panel formed by combining steel frames in a triangular shape and integrated by welding or the like, and includes a horizontal portion 72 fixed to the lower surface of the upper beam 60 and a pair of portions extending downward from the horizontal portion 72. Inclined portions 74 and 76 and an upper connecting portion 78 coupled to the tips of the inclined portions 74 and 76 are provided. The inclined portions 74 and 76 are provided at different angles so that an inclination angle θ1 of the outer inclined portion 74 with respect to the horizontal portion 72 and an inclination angle θ2 of the inner inclined portion 76 satisfy θ1> θ2.

  Similarly to the upper transmission member 70, the lower transmission member 90 includes a steel panel in which steel frames are combined in a triangular shape and integrated by welding or the like, and a horizontal portion 92 fixed to the upper surface of the lower beam 30; A pair of inclined portions 94, 96 extending upward from 92, and a lower connecting portion 98 coupled to the tips of the inclined portions 94, 96 are provided. Similarly to the upper transmission member 70, the inclined portions 94 and 96 are different so that the inclination angle θ1 of the outer inclined portion 94 with respect to the horizontal portion 92 and the inclination angle θ2 of the inner inclined portion 96 are θ1> θ2. It is provided at an angle.

  Further, the upper transmission member 70 and the lower transmission member 90 are attached so as to be point-symmetric with respect to the center of the hydraulic damper 100.

  The hydraulic damper 100 includes a cylinder 102 formed in a cylindrical shape and a piston rod 104 having a piston that slides inside the cylinder 102. The piston is provided with a damping force generating section that includes a passage through which hydraulic oil filled in the cylinder 102 flows and an orifice that restricts the flow rate of the hydraulic oil flowing through the passage.

  The end of the cylinder 102 is rotatably connected to the lower connecting portion 98 via the connecting pin 106, and the end of the piston rod 104 is rotatable to the upper connecting portion 78 via the connecting pin 108. It is connected to. The hydraulic damper 100 is held in a substantially horizontal state with both ends connected to the upper connecting portion 78 and the lower connecting portion 98, and the vibration in the horizontal direction (X direction) is transmitted to the cylinder. A piston slides in 102, and a damping force corresponding to the sliding stroke is generated.

  The plate member 80 is made of wooden plywood, has a width that is the same as the distance between the pair of columns 40 and 50, and is attached in a state where both side surfaces are in contact with the columns 40 and 50. Further, the plate member 80 is processed to have a height dimension along with the columns 40 and 50 according to the height dimension of the floor surface and the ceiling to be constructed.

  The plate member 80 is previously provided with a pair of through holes 82 and 84 that penetrate in the vertical direction. The through holes 82 and 84 are holes for inserting bolts 110 for fastening the lower transmission member 90 to the lower beam 30.

  In addition, a pair of bolt fastening members 120 communicating with the lower ends of the through holes 82 and 84 are embedded in the upper surface of the lower beam 30 on which the plate member 80 is placed. The bolt fastening member 120 has a female screw into which the bolt 110 is screwed.

  In the horizontal portion 92 of the lower transmission member 90, a pair of bolt insertion holes 91 and 93 communicating with the upper ends of the through holes 82 and 84 of the plate member 80 penetrates in the vertical direction (Z direction). A gap filling member 130 made of a piece of wood is inserted into the gap between both ends of the horizontal portion 92 and the pillars 40 and 50. The gap filling member 130 is a horizontal spacer for preventing the horizontal portion 92 from rattling in the horizontal direction.

  The plate member 80, the lower transmission member 90, the bolt 110, and the gap filling member 130 constitute a lower connection mechanism 300.

  Here, a procedure for attaching the lower connection mechanism 300 will be described.

  As shown in FIG. 2, in the lower connection mechanism 300, after the height dimension of the plate member 80 is adjusted to a dimension corresponding to the ceiling height at the construction site, the bolt 110 is inserted into the bolt of the lower transmission member 90. The ends of the bolts 110 are screwed into the bolt fastening members 120 through the holes 91 and 93 and the through holes 82 and 84 of the plate member 80. Thereby, the lower transmission member 90 and the plate member 80 are fastened to the upper surface of the lower beam 30.

  Further, when the fastening operation with the bolt 110 is completed, the gap filling member 130 is inserted into the gap between the both ends of the horizontal portion 92 of the lower transmission member 90 and the columns 40 and 50. The gap filling member 130 is cut into a size corresponding to the gap between the both ends of the horizontal portion 92 and the pillars 40 and 50 and is inserted into the gap between the both ends of the horizontal portion 92 and the pillars 40 and 50. Can be regulated in the horizontal direction. Then, the gap filling member 130 is fastened to the plate member 80 by a fastening member 140 such as a nail or a wood screw.

  Thereby, the height dimension of the lower transmission member 90 is reduced to increase the rigidity against vibration in the horizontal direction (X direction), and the horizontal portion 92 of the lower transmission member 90 leans in the vibration direction (X direction). It is integrated in a stable state without sticking. Therefore, when horizontal vibration F is input to the lower beam 30, the plate member 80 and the lower transmission member 90 fastened to the lower beam 30 by the bolt 110 can vibrate together with the lower beam 30, and The vibration F of the beam 30 can be efficiently transmitted to the hydraulic damper 100.

  Therefore, even when a medium-scale earthquake with a relatively small amplitude occurs, the vibration F caused by the earthquake is transmitted to the hydraulic damper 100 without deforming the lower transmission member 90, and the magnitude of the vibration F depends on the magnitude of the vibration F. In addition, the piston stroke of the hydraulic damper 100 can be transmitted to ensure a damping effect.

  Moreover, since the lower side connection mechanism 300 has the board | plate material 80 for height adjustment, it becomes possible to attach to the wall part of the existing building easily. Therefore, the vibration damping device 10 is also advantageous when a general house (a building that does not have earthquake resistance) is remodeled into an earthquake resistant house.

  After the attachment work of the plate member 80, the lower transmission member 90, the bolt 110, and the gap filling member 130 constituting the lower connection mechanism 300 is completed, the attachment work by the upper connection mechanism 200 is performed.

  As shown in FIG. 3, in the upper connection mechanism 200, the upper transmission member 70 is directly fastened to the lower surface of the upper beam 60 without using the plate member 80.

  In the horizontal portion 72 of the upper transmission member 70, a pair of bolt insertion holes 71, 73 penetrates in the vertical direction (Z direction). A pair of bolt fastening members 220 are embedded in the lower surface of the upper beam 60 at positions communicating with the pair of bolt insertion holes 71 and 73. The bolt fastening member 220 has a female screw into which the bolt 210 is screwed.

  Further, a gap filling member 230 made of a piece of wood is inserted into the gap between both ends of the horizontal portion 92 and the columns 40 and 50. The gap filling member 230 is a horizontal spacer for preventing the horizontal portion 72 from rattling in the horizontal direction.

  The upper transmission member 70, the bolt 210, and the gap filling member 230 constitute the upper connection mechanism 200.

  Here, a procedure for attaching the upper connection mechanism 200 will be described.

  In the upper connection mechanism 200, the bolt 210 is inserted into the bolt insertion holes 71 and 73 of the upper transmission member 70 and the tip of the bolt 210 is screwed into the bolt fastening member 220. Thereby, the upper transmission member 70 is fastened to the lower surface of the upper beam 60.

  Further, when the fastening operation by the bolt 210 is completed, the gap filling member 230 is inserted into the gap between the both ends of the horizontal portion 72 of the upper transmission member 70 and the columns 40 and 50. The gap filling member 230 is cut into a size corresponding to the gap between the both ends of the horizontal portion 72 and the columns 40 and 50 and is inserted into the gap between the both ends of the horizontal portion 72 and the columns 40 and 50. Can be regulated in the horizontal direction. Then, the gap filling member 230 is fastened to the upper beam 60 by a fastening member 240 such as a nail or a wood screw.

  As a result, the horizontal portion 72 of the upper transmission member 70 is integrated in a stable state with no shaking in the vibration direction (X direction). Therefore, when horizontal vibration is input to the upper beam 60, the upper transmission member 70 fastened to the upper beam 60 by the bolt 210 can vibrate together with the upper beam 60. Can be efficiently transmitted to the hydraulic damper 100.

  When the fastening operation by the bolt 210 is completed, the end of the cylinder 102 of the hydraulic damper 100 is connected to the upper connecting portion 78 via the connecting pin 106, and then the end of the piston rod 104 is connected to the connecting pin 108. It is connected to the lower side connection part 98 via.

  In the above embodiment, the configuration in which the bolts 110 and 210 are screwed into the bolt fastening members 120 and 220 of the lower beam 30 and the upper beam 60 has been described as an example. A mounting structure may be adopted in which a stud bolt or an anchor bolt is embedded in the beam 60, and a nut is fastened to a bolt tip penetrating the horizontal portion 72 of the upper transmission member 70 and the horizontal portion 92 of the lower transmission member 90.

  In the above embodiment, the hydraulic damper is described as an example, but it is needless to say that a damper other than the hydraulic damper (for example, a damper made of a friction damper or a viscoelastic rubber) may be used.

  Moreover, although the said Example demonstrated the case where it attached so that the right and left side surface of the board | plate material 80 may contact | abut to the pillars 40 and 50 on both sides, the attachment structure which provides a clearance gap between the left and right side surfaces of the board | plate material 80, and the pillars 40 and 50. It is also good.

  Further, in the above embodiment, the upper transmission member 70 and the lower transmission member 90 are attached at positions separated from the columns 40 and 50 on both sides, and the gaps between the both ends of the horizontal portions 72 and 92 and the columns 40 and 50 are filled. Although the configuration in which the members 130 and 230 are inserted is illustrated, when any one of the horizontal portions 72 and 92 abuts on the columns 40 and 50, the gap filling members 130 and 230 are connected to the other end and the column. You may insert only in the clearance gap between 40 and 50.

  In the above-described embodiment, the configuration in which the plate member 80 for height adjustment is interposed between the lower transmission member 90 and the lower beam 30 has been described. However, the configuration is not limited thereto, and the upper transmission member 70 and the upper beam 60 It is good also as a structure which interposes the board | plate material 80 for height adjustment between these. In this case, since the height adjustment is performed on both the upper side and the lower side, the labor is doubled. Therefore, it is desirable to provide the plate member 80 on either the upper side or the lower side.

  In the above-described embodiment, the upper transmission member 70 and the lower transmission member 90 are made of steel. However, the present invention is not limited to this, and the upper transmission member 70 and the lower transmission member 90 may be formed of a light metal material such as an aluminum alloy. Alternatively, it may be made of wood. When the upper transmission member 70 and the lower transmission member 90 are made of wood, the height of the upper transmission member 70 and the lower transmission member 90 itself can be adjusted at the construction site.

  Moreover, in the said Example, although the case where the damping device was installed in the wall part of a wooden house was mentioned as an example and explained, it is not restricted to this, Buildings other than a wooden (for example, a light steel frame, pillars and beams are made of concrete. Of course, the present invention can also be applied to a wall portion of a formed building).

  In the above embodiment, the configuration in which the upper transmission member 70 and the lower transmission member 90 are fastened to the upper beam 60 and the lower beam 30 with two bolts 110 and 210 is described as an example. Of course, a greater number of bolts 110 and 210 may be used.

It is a front view which shows one Example of the damping device by this invention. It is a longitudinal cross-sectional view which expands and shows a lower side connection mechanism. It is a longitudinal cross-sectional view which expands and shows an upper side connection mechanism.

Explanation of symbols

10 Damping device 20 Foundation (basic)
30 Lower beam 40, 50 Column 60 Upper beam 70 Upper transmission member 71, 73, 91, 93 Bolt insertion hole 72, 92 Horizontal portion 74, 76, 94, 96 Inclined portion 78 Upper connecting portion 80 Plate member 82, 84 Through hole 90 Lower transmission member 98 Lower coupling part 100 Hydraulic damper 110, 210 Bolt 120, 220 Bolt fastening member 130, 230 Gap filling member 140, 240 Fastening member 200 Upper connection mechanism 300 Lower connection mechanism

Claims (3)

In the vibration damping device that gives a damping force to the horizontal relative displacement between the upper beam and the lower beam,
An upper transmission member for transmitting a horizontal displacement of the upper beam;
A lower transmission member for transmitting a horizontal displacement of the lower beam;
One end side is provided in contact with one of the upper beam or the lower beam, the other end side is in contact with one of the upper transmission member or the lower transmission member, and the height position of the upper transmission member or the lower transmission member Adjusting the plate material,
At least two through holes penetrating in the vertical direction of the plate material;
An insertion hole provided in a horizontal portion that contacts one end of the plate member of the upper transmission member or the lower transmission member, and provided at a position facing the through hole;
A bolt that penetrates the through hole and the insertion hole, and fixes one of the upper transmission member or the lower transmission member to the upper beam or the lower beam;
A gap filling member inserted into a gap between at least one horizontal portion of the upper transmission member or the lower transmission member and a column facing a side surface of the plate member;
A damper that is provided between the upper transmission member and the lower transmission member, and generates a damping force according to relative displacement between the upper transmission member and the lower transmission member;
A vibration damping device characterized by comprising:   The vibration control device according to claim 1, wherein the upper and lower transmission members are formed of a steel frame.   The vibration damping device according to claim 1 or 2, wherein the plate member is made of wood.

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