JP4135225B2 - Vibration control structure of building frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention effectively absorbs vibration energy such as earthquakes and winds input to a multi-storey building, and suppresses the vibration of the building that is caused by the vibration energy. Concerning structure.
[0002]
[Prior art]
In general, a multi-storey building such as a building is configured as an RC structure, an S structure, or an SRC structure, and columns and beams are sequentially connected to form each side of a cube to form a ramen structure. Such a multi-story building incorporates various vibration control functions to suppress the swinging of the building caused by earthquakes or strong winds. For such a damping function, there is a conventional idea of damping from the structure of the building itself. For example, as shown in FIGS. 6 (a) and 6 (b), a damping system using walls is used. is there. This is because when the building frame 1 is swung due to an earthquake or strong wind and sheared as shown in FIG. 7A and bent as shown in FIG. 7B, the wall 2 and the beam (or The vibration energy caused by the earthquake or wind is absorbed by a damping device 4 such as a damper provided between the column and the pillar 3. In other words, a predetermined gap δ is provided between the wall 2 and the beam (column) 3, and the gap δ changes due to deformation of the building frame, and the vibration damping device 4 is activated. A vibration control function can be obtained.
[0003]
[Problems to be solved by the invention]
However, in such a conventional vibration control structure of a building frame, the wall 2 is constructed independently for each floor, and is separated on the upper and lower floors, so that the gap δ input to the vibration suppression device 4 is reduced. The amount of change will depend on the amount of shear and bending deformation at each floor. In particular, in the shear deformation shown in FIG. 7 (a), the horizontal relative change amount δSH1 between the wall 2 and the beam 3 is relatively large, but in the bending deformation shown in FIG. The change amount ΔMH1 becomes small, and the relative change amount ΔMV1 in the vertical direction becomes further small.
[0004]
For this reason, in the said damping device 4 set also considering the shear deformation, it becomes impossible to obtain a sufficient damping function when the building frame 1 is bent and deformed. Moreover, in a building structure such as an RC structure that increases rigidity and enters the nonlinear region of the member with a small amount of deformation, a sufficient vibration control function by the vibration control device 4 cannot be exhibited regardless of shear deformation or bending deformation. There was a problem that it ended up.
[0005]
Therefore, the present invention has been made in view of such a conventional problem. Regardless of shear deformation or bending deformation, the present invention can fully extract the function of the vibration suppression device even when the amount of deformation of the building frame is small, thereby suppressing vibration. An object of the present invention is to provide a vibration control structure of a building frame that can improve the effect.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, the vibration control structure of a building frame according to the present invention is a multi-story building frame, and a continuous wall is formed between opposing columns over a plurality of floors. A frame structure composed of opposing columns and beams installed between the columns is provided with an appropriate gap, and the frame structure and the multi-layered wall are operated in accordance with horizontal displacement. It connects via the horizontal damper provided in the direction, and connects via the vertical damper provided in the vertical direction that operates according to the displacement in the vertical direction .
[0007]
Therefore, in the vibration control structure of a building frame according to the present invention, a multi-story continuous wall is installed in the frame structure part composed of columns and beams. When bending deformation occurs, the amount of deformation between the multi-layer wall and the frame structure can be obtained as a large amount of deformation for the layer where the multi-layer wall continues. Therefore, even when the amount of deformation of the building frame is small, the gap change can be increased, so that the vibration control function by the vibration control device that connects the frame structure and the multi-layered wall can be fully exploited, and the vibration control effect of the building Can be remarkably improved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of a vibration control structure for a building frame according to the present invention, FIG. 1 is a front view of the main part of the building frame, FIG. 2 is a longitudinal sectional view of the main part of the building frame, and FIG. FIG. 4 is an explanatory view showing a change in the gap during bending deformation of the building frame.
[0009]
The vibration damping structure according to the present invention is applied to a multi-story building frame 10, and its basic structure forms a continuous wall 14 extending across a plurality of floors between opposing pillars 12 and 12, as shown in FIG. The multi-layer wall 14 is fitted into a frame structure portion 18 composed of opposing columns 12 and 12 and a beam 16 installed between the columns 12 and 12, with appropriate gaps δ1 and δ2, and the frame The structural portion 18 and the multi-layer wall 14 are connected via a vibration control device 20.
[0010]
The building frame 10 is constructed as a middle or high-rise building by RC construction, SRC construction, S construction, or the like, and the multi-story wall 14 is built between the center portions of the opposing columns 12 and 12. At this time, the multi-layer wall 14 is formed continuously from the first floor to the top floor. Therefore, the multi-layer wall 14 is formed between the pillars 12 and 12 and the beams 16 installed on each floor. Will penetrate. For this reason, in the present embodiment, a separation portion 22 is formed in the central portion of the beam 16, and the interlocking wall 14 is inserted through the separation portion 22. In FIG. 2, 24 is a floor slab.
[0011]
When the multi-layer wall 14 is fitted into the frame member 18 including the column 12 and the beam 16, a gap δ 1 is provided between the multi-layer wall 14 and the column 12, and a separation portion between the multi-layer wall 14 and the beam 16 is provided. A gap .delta.2 is provided between the inner side of 22 and the inner side. The damping device 20 that connects the multi-layer wall 14 and the frame member 18 is disposed in the gaps δ1 and δ2 or in the vicinity of the gap δ1 and the gap δ2.
[0012]
As the damping device 20, an energy absorbing material such as a damper 20a or a high damping rubber 20b is used. The damper 20a is preferably a sealed type of a highly viscous fluid, and absorbs vibration energy when forcibly passing through the orifice as the gaps δ1 and δ2 change. On the other hand, the high damping rubber 20b absorbs vibration energy when accompanied by sudden compression deformation, and can add damping to all in-plane directions of the multi-layer wall 14.
[0013]
One end of the damper 20 a is attached to the continuous wall 14, and the other end is attached to the frame structure 18. The high-attenuation rubber 20b is provided at a portion where it is difficult to place the damper 20a in a small gap δ2, and one side surface of the high-attenuation rubber 20b is fixed to the continuous wall 14 and the other side surface of the beam 16 is provided. It is fixed inside the separation part 22. The high-damping rubber 20b can also be disposed in the gap δ1 between the continuous wall 14 and the column 12.
[0014]
In the vibration control structure for a building frame according to the present embodiment having the above-described configuration, the continuous wall 14 extending from the first floor to the uppermost floor is formed on the column structure 12 including the columns 12 and the beams 16. Are provided with appropriate gaps δ1, δ2 between the beam 16 and the beam 16, and the multi-layer wall 14 and the frame structure 18 are connected to each other via a damping device 20 including a damper 20a, a high damping rubber 20b, and the like. Because they are connected, when shear deformation or bending deformation occurs in the building frame 10 due to an earthquake or wind, the gaps δ1 and δ2 change and the vibration control device 20 operates to absorb vibration energy, and the building The vibration of the frame 10 can be quickly attenuated to exhibit a vibration damping function.
[0015]
Here, in the present embodiment, since the multi-layer wall 14 is continuous over the multi-layer floor from the first floor to the top floor, the maximum amount of change in the gaps δ1 and δ2 between the multi-layer wall 14 and the frame structure portion 18 is as follows. The gap change amount of each floor from the first floor to the top floor is gathered.
[0016]
That is, FIG. 3 shows a case where the building frame 10 undergoes shear deformation, and when the amount of deformation of the building frame 10 is the same as that of the conventional case shown in FIG. The horizontal relative change amount ΔSH2 appearing during the period can be obtained as a larger value than the conventional relative change amount ΔSH1. FIG. 4 shows a case where the building frame 10 is bent and deformed. Even in this case, if the deformation amount of the building frame 10 is the same as the conventional structure shown in FIG. The vertical relative change ΔMV2 can be obtained as a larger value than the conventional relative changes ΔMH1 and ΔMV1.
[0017]
Therefore, even when the amount of deformation of the building frame 10 is small, the vibration damping function by the vibration damping device 20 can be sufficiently extracted, and the vibration damping effect of the building can be significantly improved. In particular, when the building frame 10 is bent and deformed, the amount of deformation in the horizontal direction and the vertical direction is significantly smaller than that during shear deformation. However, even when the amount of deformation is small, the damping device 20 is operated. As a result, the vibration control function of the building can be sufficiently secured. In addition, since the multi-layer wall 14 is not divided for each floor, the multi-layer wall 14 can make the interlayer deformation of each floor uniform, especially when the building is raised.
[0018]
By the way, in this embodiment, although the case where the continuous layer wall 14 was made to continue over the whole number of floors from the first floor to the top floor was disclosed, it is not limited to this and any continuous plural floors, for example, the first floor What is necessary is just to make this continuous layer wall 14 continue over several floors of arbitrary parts, such as between from the middle floor to the middle floor, or from the middle floor to the top floor. Of course, in this case, a damping effect corresponding to the number of consecutive floors can be obtained.
[0019]
Moreover, as the damping device 20, in addition to the damper 20a and the high damping rubber 20b disclosed in the present embodiment, a link material formed of a viscoelastic material such as lead, a high friction material, or the like can be used. In this case, vibration energy is absorbed by the link material due to viscous deformation, and the high friction material is absorbed by frictional resistance.
[0020]
By the way, in this embodiment, although the case where the said continuous layer wall 14 was provided between a pair of pillars 12 and 12 was illustrated, this continuous layer wall 14 may be applied to all the walls and is effective in damping. It is also possible to select a specific part and make the wall of the part a multi-layered wall 14.
[0021]
FIG. 5 is a longitudinal sectional view of the outer wall 26 portion of the building frame 10 and shows a case where the outer wall 26 is used as a multi-layered wall. Even in this case, a gap δ3 is appropriately provided between the outer wall 26 and the beam 16, a high damping rubber 20b is attached to the gap δ3, and a damper 20a is provided below the gap δ3.
[0022]
Therefore, by using the outer wall 26 constituting the outer shell of the building as a multi-layered wall in this way, the vibration control effect can be further improved by the outer wall 26 that is always provided in the building. In addition, the idea that the outer wall 26 is a multi-layered wall as in this embodiment can be applied even when the beam 16 is arranged on only one side of the multi-layered wall 14 inside the building frame 10. .
[0023]
【The invention's effect】
As described above, in the vibration control structure for a building frame according to claim 1 of the present invention, a multi-layer wall is continuously formed across a plurality of floors between opposing columns. The frame structure portion made of beams is installed with an appropriate gap, and the frame structure portion and the multi-layered wall are connected via a horizontal damper provided in a horizontal direction that operates according to a horizontal displacement, Because they are connected via vertical dampers that operate in response to vertical displacements , multi-story walls and frame structures can be used when shear deformation or bending deformation occurs in a building frame due to an earthquake or wind. The amount of deformation between the two can be obtained as a large amount of deformation corresponding to the layer in which the continuous wall is continuous.
[0024]
Therefore, even if the building frame is bent or deformed, or the rigidity of the frame itself is increased, and the amount of deformation of the building frame is small, the damping device that connects the frame structure and the multi-layered wall is used. The vibration function can be sufficiently extracted, and the vibration control effect of the building can be remarkably improved. In addition, since the above-mentioned multi-story wall is not divided for each floor, the multi-story wall has an excellent effect that the interlayer deformation of each floor can be made uniform especially when the building is raised.
[Brief description of the drawings]
FIG. 1 is a front view of a main part of a building frame showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of an essential part of a building frame showing an embodiment of the present invention.
FIG. 3 is an explanatory diagram at the time of shear deformation of a building frame showing an embodiment of the present invention.
FIG. 4 is an explanatory diagram at the time of bending deformation of a building frame showing an embodiment of the present invention.
FIG. 5 is a longitudinal sectional view of an essential part of a building frame showing another embodiment of the present invention.
FIG. 6 is an explanatory view showing a main part front view (a) and a main part longitudinal sectional view (b) of a conventional building frame.
FIG. 7 is an explanatory diagram showing a shear deformation (a) and a bending deformation (b) of a conventional building frame.
[Explanation of symbols]
10 Building Frame 12 Column 14 Multi-layer Wall 16 Beam 18 Frame Structure 20 Damping Device 20a Damper (Damping Device)
20b High damping rubber (damping device)
26 Outer wall (multi-layered wall)
δ1, δ2, δ3 clearance

Claims (1)

In a multi-story building structure, a continuous layer wall is formed between opposing columns across multiple floors, and the continuous layer wall is composed of opposing columns and beams built between these columns. The structure part is installed with an appropriate gap, and the frame structure part and the multi-layered wall are connected via a horizontal damper provided in the horizontal direction that operates according to the horizontal direction displacement, and the vertical direction displacement. A vibration control structure for a building frame, wherein the structure is connected via a vertical damper provided in a vertical direction that operates in response to the vibration.

Images