JP2009249973A - Vibration control structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a sufficient vibration control effect even if a high-rigidity structure has a large ratio of a height to a width and to a depth in the horizontal direction. <P>SOLUTION: The vibration control structure 10 is provided with an external building 20, an inside structure 30 having a natural period different from that of the external building 20, and a horizontal vibration control device 40 for connecting the external building 20 with the inside structure 30 at a plurality of heights. The vibration control structure is further provided with a vertical displacement control mechanism 50 for controlling relative displacement in the vertical direction of both the external building 20 and the inside structure 30 at their upper portions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vibration damping structure formed by connecting a plurality of structures having different natural periods with a vibration damping device.

  Conventionally, in a high-rise building, if a large horizontal force due to seismic force or wind load is input, the building will undergo a large displacement accordingly, so the number of columns and beams will increase, or the cross-sectional area of the columns and beams will increase. By increasing the size of the building, the rigidity of the building is increased to improve earthquake resistance. However, such a method has a problem in that the plan area becomes an obstacle, for example, the opening area of the building is reduced or the living space is shaved.

Therefore, the applicants of the present application provided an internal structure with high rigidity and different natural period in the external building constituting the building main body, and connected the external building and the internal structure with a vibration damper. A structure has been proposed (see, for example, Patent Documents 1 and 2). According to such a vibration control structure, since the external building and the internal structure have different natural periods, the deformation modes are different, and vibration energy can be efficiently absorbed by the vibration damper. Even if the rigidity is not increased, it is possible to provide earthquake resistance and solve the above problems.
JP 2006-241783 A Japanese Patent Laid-Open No. 2005-180089

  However, in the damping structure as described above, when the ratio of the height to the width and depth of the internal structure is large, the rigidity of the internal structure with respect to the reaction force of the earthquake motion and the damping damper becomes small, Since the difference in natural period with the external building is small, there is a problem that the vibration control effect on the external building cannot be obtained sufficiently.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a horizontal structure of a structure having high rigidity in a vibration control structure in which structures having different natural periods are connected by a vibration control device. Even when the ratio of height to width and depth is large, a sufficient vibration damping effect is obtained.

  The vibration damping structure of the present invention includes a first structure, one or more second structures having a natural period different from that of the first structure, and the first structure at one or more height positions. A damping structure including a damping device that couples the structure and the second structure, wherein the first structure and the second structure are separated at an upper portion; It has a vertical displacement suppression mechanism that suppresses the relative displacement in the vertical direction between the first structure and the second structure.

  In the above vibration damping structure, the vertical displacement suppression mechanism includes a mounting member protruding laterally from an upper part of the higher structure of the first or second structure, the mounting member, and the first It may consist of a vibration damping device or a member having high vertical rigidity attached so as to connect the other upper part of the first structure or the second structure.

The vertical displacement suppression mechanism includes a mounting member protruding laterally from the upper part of each of the first and second structures at different height positions, and a control member mounted so as to connect the mounting members. It may consist of a vibration device or a member with high vertical rigidity.
The higher one of the first and second structures is disposed so as to surround the other structure or on both sides of the other structure, and the vertical displacement suppression mechanism is The upper part of the higher structure is attached so as to tie the attachment member spanned over the other structure, the attachment member, and the upper part of the other structure. It may consist of a vibration damping device or a member with high vertical rigidity.
The higher one of the first and second structures is disposed so as to surround the other structure or on both sides of the other structure, and the vertical displacement suppression mechanism is In the upper part of the higher structure, the upper structure may be composed of a member that is suspended above the other structure so as to be slidably contacted with the upper part of the other structure. .

The vibration control device or the member having high vertical rigidity may be connected so that both ends thereof can rotate in any direction.
In addition, the vibration damping device or the highly rigid member is connected at one end thereof to one of the first or second structures so as to be rotatable at least within a predetermined plane deviating from a horizontal plane, The other end may be connected so as to be rotatable within the predetermined plane, and connected to be slidable horizontally in a direction intersecting with the predetermined plane.

In addition, the vibration damping device or the member having high vertical rigidity has one end fixed to one of the first or second structures and the other end of the first or second structure. On the other hand, it may be slidably connected in any direction in the horizontal direction.
In addition, one end of the vibration damping device or the highly rigid member is connected to one of the first or second structures so as to be slidable in one horizontal direction, and the other end is the first. Alternatively, the other of the second structures may be slidably connected in a horizontal direction different from the one direction.

  According to the present invention, by suppressing the vertical displacement of a plurality of structures having different natural periods, even if any structure has a large ratio of the height to the width or depth in the horizontal direction, Since the occurrence of bending deformation in the structure can be suppressed and the rigidity can be substantially improved, a sufficient vibration damping effect can be obtained.

Hereinafter, an embodiment of a vibration damping structure of the present invention will be described in detail with reference to the drawings.
1A and 1B show a configuration of a vibration damping structure 10 of the present embodiment, in which FIG. 1A is a vertical sectional view and FIG. 1B is a horizontal sectional view. As shown in the figure, the vibration damping structure 10 of the present embodiment includes an external building 20 having a void space 21 extending in the vertical direction inside, an internal structure 30 constructed in the void space 21, and an external building. 20 and the internal structure 30 are provided so as to connect the horizontal vibration control device 40 provided at a plurality of height positions in the void space 21 to the uppermost part of the external building 20 and the internal structure 30. And a vertical displacement suppression mechanism 50 that suppresses the relative displacement in the vertical direction between the external building 20 and the internal structure 30.

  The external building 20 is a high-rise building which is formed in a rectangular shape in plan view and has a void space 21 extending in the vertical direction inside as described above. As the external building 20, for example, a steel structure, a reinforced concrete structure, a steel reinforced concrete structure, or the like can be adopted.

  The internal structure 30 can employ, for example, a steel structure, a reinforced concrete structure, a steel reinforced concrete structure, or the like, as with the external building 20. The internal structure 30 may be used as a structural element that bears structural strength, or may be used as a building. Further, the internal structure 30 is constructed so as to have higher rigidity than the external building 20. Furthermore, the height ratio of the internal structure 30 is larger than its width and depth.

  The horizontal vibration damping device 40 is provided substantially horizontally so as to connect the corner portion of the void space 21 in the external building 20 and the corner portion of the internal structure 30. The horizontal vibration damping device 40 may be any vibration damping device that absorbs energy while being deformed according to the relative displacement between the internal structure 30 and the external building 20, such as a hydraulic damper or a steel damper. Moreover, the connection method of the horizontal vibration damping device 40 is not necessarily arranged as shown in FIG. 1 (B), and the relative displacement in any direction of the external building 20 and the internal structure 30 Any horizontal damping device 40 may be disposed so long as it can absorb energy by deformation.

  Here, like the internal structure 30 of the present embodiment, a building having a large height ratio compared to the width and depth has low rigidity, and a large bending deformation is likely to occur when a horizontal force is applied. FIG. 2 is a diagram illustrating a state in which a horizontal force is applied to a single internal structure 30. As shown in the figure, when a horizontal force in the direction of the arrow in the figure acts on the internal structure 30, bending deformation occurs in the internal structure 30, the left side of the upper end in the figure moves upward, The right side in the figure moves downward. In the present embodiment, the vertical displacement suppression mechanism 50 is provided so as to connect the uppermost portions of the external building 20 and the internal structure 30 in order to suppress such vertical displacement.

FIG. 3 is an enlarged view showing the vertical displacement suppression mechanism 50 provided so as to connect the outer building 20 and the upper part of the internal structure 30. As shown in the figure, the vertical displacement suppression mechanism 50 includes an attachment member 51 provided so as to protrude in the horizontal direction at the uppermost portion of the external building 20 and the tip thereof reaches the upper portion of the internal structure 30. A vertical vibration control device 52 is provided in a vertical direction so as to connect the tip of the member 51 and the internal structure 30.
The attachment member 51 has the same configuration as that of the beam of the external structure 20, and has a large rigidity particularly in the vertical direction.
As the vertical damping device 52, a damping device capable of absorbing vertical deformation energy, such as a hydraulic damper or a steel damper, can be used.

  The upper end of the vertical vibration damping device 52 is connected to the mounting member 51 so that it can be rotated in any direction in the horizontal view by a universal joint 54. The lower end of the vertical vibration damping device 52 is also connected to the uppermost part of the internal structure 30 so that it can be rotated in any direction in the horizontal view by the universal joint 53. With this configuration, even if the external building 20 and the internal structure 30 are relatively displaced in any horizontal direction, the vertical vibration damping device 52 is rotated so as to be directed in the relative displaced direction, and the vertical direction is thus changed. Therefore, the vertical vibration damping device 52 can be prevented from being damaged and the vibration damping performance in the vertical direction can be maintained.

  When seismic force acts on the vibration damping structure 10 having such a configuration, the internal structure 30 tends to bend and deform as shown in FIG. At this time, as described above, the side where the horizontal force acts on the upper end of the internal structure 30 tends to move upward, and the side opposite to the side where the horizontal force acts on the upper end tends to move downward.

  On the other hand, the vertical damping device 52 provided to connect the internal structure 30 and the external building 20 resists the relative displacement in the vertical direction. Thereby, the bending deformation which arises in the internal structure 30 becomes small, and the internal structure 30 will show the same behavior as a structure with high rigidity with respect to a horizontal force.

  For this reason, even if it is the internal structure 30 with a small width | variety and depth with respect to height, the difference of the natural period of the external building 20 and the internal structure 30 does not become small, and the external building 20 and the internal structure 30 Vibrate in different vibration modes, and the horizontal damping device 40 can sufficiently absorb vibration energy.

  As described above, according to the present embodiment, by providing the vertical vibration damping device 52 between the internal structure 30 and the top floor of the external building 20, the space between the internal structure 30 and the external building 20 is provided. The relative displacement in the vertical direction that occurs in For this reason, even if the internal structure 30 exhibits the same behavior as a highly rigid structure and the internal structure 30 is small in width and depth, a sufficient vibration damping effect can be obtained.

  Further, since the vibration damping energy is absorbed by the deformation of the vertical vibration damping device 52, the external building 20 can be further efficiently damped.

  In the present embodiment, both ends of the vertical damping device 52 are connected so as to be rotatable in any direction in the horizontal view, so that the external building 20 and the internal structure 30 are in any direction in the horizontal view. Even if the relative displacement occurs, it is possible to follow this. However, the present invention is not limited to this, and it is also possible to follow the relative displacement by connecting as described below.

  FIG. 4 is a diagram illustrating a connection method according to the vertical vibration control device 52. In the example shown in FIG. 4A, one end (upper end in the example of FIG. 4) of the vertical vibration damping device 52 is rotatably connected on the XZ plane in the drawing, and the other end (lower end in the example of FIG. 4). ) Can be rotated in the XZ plane and slidable in the Y direction.

  Even in such a case, for example, when relative displacement in the X direction occurs between the external building 20 and the internal structure 30, as shown in FIG. By rotating and tilting in the XZ plane, it is possible to follow this relative displacement. Further, as shown in FIG. 5C, when relative displacement in the Y direction occurs, the lower end of the vertical vibration damping device 52 slides in the Y direction, so that this can be followed. Since the vertical damping device 52 can follow the displacement in the X direction and the Y direction in this way, the displacement is generated in any direction in the horizontal direction between the external building 20 and the internal structure 30. Can also follow this.

  Further, in the connection example of the vertical vibration damping device 52 described with reference to FIG. 4, the relative displacement in the X direction can be achieved by making both ends of the vertical vibration damping device 52 rotatable in the XZ plane perpendicular to the horizontal plane. The lower end of the vertical vibration control device 52 is slidably connected in the Y direction perpendicular to the XZ plane so as to follow the relative displacement in the Y direction. It is not necessary to be able to rotate in a vertical plane, it is only necessary that both ends are connected so as to be able to rotate in a rotating plane that is out of the horizontal plane, and it can slide in a direction perpendicular to the rotating plane. There is no need to do so, as long as it is slidable in a direction away from the rotation surface (that is, a direction intersecting the rotation surface).

  Further, any one end of the vertical vibration damping device 52 may be fixed, and the other end may be configured to be able to slide in any direction on the horizontal plane. Further, one end of the vertical vibration damping device 52 may be slidable in one direction in the horizontal direction, and the other end may be slidable in a direction different from the one direction. In short, what is necessary is just a structure which can follow this, even if the external building 20 and the internal structure 30 are relatively displaced in the horizontal direction.

  In the present embodiment, the mounting member 51 is protruded from the external building 20, the upper end of the vertical vibration damping device 52 is connected to the mounting member 51, and the lower end is connected to the upper part of the internal structure 30. Not limited to this, as shown in FIG. 5 (A), the external building 20 and the internal structure 30 are provided with mounting members 153 and 151 that protrude in the horizontal direction, and the vertical damping device is provided on these mounting members 153 and 151. Both ends of 152 may be connected. Further, as shown in FIG. 5 (B), a mounting member 251 is stretched over the external building 20 so as to straddle the upper part of the void space 21, and the vertical control is performed so as to connect the mounting member 251 and the upper part of the internal structure 30. A vibration device 252 may be provided.

  In the present embodiment, both ends of the vertical vibration damping device 52 are connected so as to connect the external building 20 and the internal structure 30. However, the present invention is not limited to this, and a rigid material having high vertical rigidity. May be connected. Even in such a case, if the internal structure 30 is to bend and deform, the bending deformation is suppressed by the rigid material, so that the rigidity of the internal structure 30 can be improved. At this time, there is a mechanism that can follow the horizontal displacement between the external building 20 and the internal structure 30 even if the rigid material does not expand and contract, such as allowing the upper end or the lower end to slide in any direction in the horizontal view. Necessary.

  In the present embodiment, the vertical vibration damping device 52 is installed so as to extend in the vertical direction. However, the present invention is not limited to this, and may be installed in an inclined manner. In short, the external building 20 and the internal structure 30 are provided. What is necessary is just to be able to suppress the vertical displacement between. When the vertical vibration damping device 52 is installed in an inclined manner as described above, the vertical vibration damping device 52 can also have a function as a horizontal vibration damping device.

  Moreover, although this embodiment demonstrated the case where the external building 20 was high compared with the internal structure 30, not only this but this invention is applied also when the internal structure 30 is high compared with the external building 20. be able to. FIG. 6 is a diagram illustrating the vibration damping structure 10 when the internal structure 30 is higher than the external building 20. As shown in the figure, when the internal structure 30 is higher than the external building 20, the mounting member 351 protrudes from the internal structure 30, and the upper end of the vertical vibration damping device 352 is connected to the mounting member 351. The lower end of the vertical vibration damping device 352 may be connected to the upper part of the external building 20. At this time, as shown in FIG. 6A, a vertical damping device 352 may be provided at the outer edge of the external building 20, or as shown in FIG. 6B, the vertical damping device 352 is provided at the edge of the void space 21. A vibration device 352 may be provided.

  Moreover, when the height of the external building 20 and the internal structure 30 is substantially equal, the vertical vibration damping device 52 can be omitted. In this case, as shown in FIG. 7, a horizontal member 451 is stretched over the outer building 20 so as to straddle the upper part of the void space 21, and the horizontal member 451 and the internal structure 30 are slidably contacted. Good.

Further, in the present embodiment, the external building 20 and the internal structure 30 provided in the void space 21 extending in the vertical direction inside the external building 20 are connected by the horizontal vibration control device 40. However, the present invention is not limited to this. However, the present invention is not limited to this, and a plurality of structures having different stiffnesses (different natural periods) are provided side by side, and these structures are connected by a vibration control device. The present invention can also be applied to a vibrating structure.
In each of the above embodiments, the mounting members 51, 151, 153, 251, and 351 are provided so as to protrude in the horizontal direction from the external building 20. However, the present invention is not limited thereto, and the mounting members 51, 151, 153, 251 and 351 are inclined with respect to the horizontal direction. In other words, it may be provided so as to project in the lateral direction.

The structure of the damping structure of this embodiment is shown, (A) is a vertical direction sectional view, (B) is a horizontal direction sectional view. It is a figure which shows a mode that the bending deformation occurred in the independent internal structure. It is an enlarged view which shows the vertical displacement suppression mechanism provided so that an upper part of an external building and an internal structure might be tied. It is a figure which shows another connection method of a vertical damping device. It is a figure which shows the damping structure of another embodiment. It is a figure which shows a damping structure when an internal structure is high compared with an external building. It is a figure which shows a damping structure when the height of an external building and an internal structure is substantially equal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Damping structure 20 External building 21 Void space 30 Internal structure 40 Horizontal damping device 50,150,250,350,450 Vertical displacement suppression mechanism 51,151,153,251,351 Mounting member 52,152,252, 352 Vertical damping device 53, 54 Universal joint 451 Horizontal member

Claims (9)

A first structure, one or more second structures having a different natural period from the first structure, and the first structure and the second structure at one or more height positions; A vibration control structure comprising:
The first structure and the second structure are separated at least at the top;
A vibration damping structure having a vertical displacement suppression mechanism that suppresses relative displacement in the vertical direction between the first structure and the second structure. The vibration damping structure according to claim 1,
The vertical displacement suppression mechanism includes a mounting member protruding laterally from the upper part of the higher structure of the first or second structure,
A vibration damping device comprising a vibration damping device or a member having high vertical rigidity attached so as to connect the attachment member and the other upper part of the first structure body or the second structure body. Structure. The vibration damping structure according to claim 1,
The vertical displacement suppression mechanism includes a mounting member that protrudes laterally from an upper portion of each of the first and second structures at different height positions;
A vibration damping structure comprising: a vibration damping device or a member having high vertical rigidity attached so as to connect the attachment members. The vibration damping structure according to claim 1,
The higher one of the first or second structures is disposed so as to surround the other structure or on both sides of the other structure,
The vertical displacement suppression mechanism includes an attachment member that spans above the other structure at the upper part of the higher structure,
A vibration damping structure comprising the vibration damping device or a member having high vertical rigidity attached so as to connect the attachment member and the upper part of the other structure. The vibration damping structure according to claim 1,
The higher one of the first or second structures is disposed so as to surround the other structure or on both sides of the other structure,
The vertical displacement suppression mechanism is composed of a member that is suspended above the other structure so as to be slidably contacted with the upper part of the other structure in the horizontal direction at the upper part of the higher structure. Damping structure characterized by that. A vibration damping structure according to any one of claims 2 to 4,
The vibration damping device or the member having high vertical rigidity is connected so that both ends thereof can rotate in any direction. A vibration damping structure according to any one of claims 2 to 4,
One end of the vibration damping device or the member having high vertical rigidity is connected to one of the first or second structures so as to be rotatable at least within a predetermined plane deviating from a horizontal plane, and the other end. Is connected so as to be rotatable within the predetermined plane, and is connected so as to be slidable horizontally in a direction intersecting with the predetermined plane. A vibration damping structure according to any one of claims 2 to 4,
One end of the vibration damping device or the highly rigid member is fixed to one of the first or second structures, and the other end is connected to the other of the first or second structures. A damping structure characterized by being slidably connected in any horizontal direction. A vibration damping structure according to any one of claims 2 to 4,
One end of the vibration damping device or the highly rigid member is slidably connected to one of the first or second structures in one horizontal direction, and the other end is the first or second. A vibration damping structure, wherein the other structure is slidably connected in a horizontal direction different from the one direction.

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