JPH05118160A - Damping wall device - Google Patents

Abstract

PURPOSE:To enable a damping wall to display its damping performance so effectively from small vibration to the large one despite a small type. CONSTITUTION:In this damping wall, there is provided with a damper frame 17 consisting of a cathode frame 10, stored with a liquid 12 composed of an electric viscous fluid in space between a beam 3 and a wall 5, and an anode frame 11 in the shape of submerging a part of a partition plate 11a in the liquid 12. Under this constitution, a proper voltage is impressed to an interval between the cathode frame 10 and the anode frame 11 via a voltage controller 15, and this voltage is fluctuated up and down whereby viscosity in the liquid 12 is increased or decreased, thus this liquid 12 is adjusted to an optimum damping member for absorbing a vibration in a structure 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damping wall device suitable for use in damping vibration generated in a structure such as a building due to an earthquake or wind.

[0002]

2. Description of the Related Art Recently, various types of vibration damping devices have been proposed in order to suppress the shaking generated in a structure due to an earthquake, wind, or the like, but many of them have been incorporated in the foundation of the structure. However, in addition to such a method, if there is a vibration damping device capable of absorbing vibration in each layer of the structure, even if the vibration damping performance of each individual device is relatively small, it can effectively work. Development was desired.
Therefore, the walls and columns on each floor are formed with a gap, and the walls are connected to the beams via appropriate dampers to prevent the shaking that occurs during an earthquake from viscoelasticity and plasticity of the energy absorber that constitutes the dampers. There has been proposed a damping wall device that absorbs strain energy or the like.

[0003]

By the way, in such a damping wall device, when a so-called passive damping system is attempted, it is possible to cover from a small sway caused by wind or a small earthquake to a large sway caused by a large earthquake. Is extremely difficult to manufacture. For this reason, it is usually necessary to set multiple dampers such that small vibrations are absorbed by the viscosity of the viscous damper, while large vibrations are absorbed by the elasto-plastic dampers such as steel dampers, friction dampers and lead dampers. It has to become a connection. In response to such passive type vibration control, various types of so-called semi-active type vibration control in which the rigidity and damping of a building are changed every moment to control the vibration have been proposed. However, in such semi-active type vibration control, it is very difficult to manufacture the device to continuously change the rigidity and damping of the building or to change it to an arbitrary size, and it corresponds to the large and small shaking that occurs in the building. It was extremely difficult to effectively dampen this at all times. Therefore, the present invention is a simple method in view of the above circumstances,
An object of the present invention is to provide a damping wall device capable of continuously and effectively responding to a wide variety of large and small shakings that can occur in a building.

[0004]

That is, the present invention has a plurality of columns (2) and beams (3), among which columns (2) and beams (3) are adjacent to each other. ) And the seismic resistant element member (5) between the beam (3), in the structure (1) between the beam (3) and the seismic resistant element member (5), the liquid storage space (16) inside. A frame (17) formed with is formed and disposed, a liquid (12) made of an electrorheological fluid is stored in a liquid storage space (16) of the frame (17), and an electrode ( 10), (1
1) is provided so that a voltage can be applied to the liquid (12) composed of the electrorheological fluid, and the electrodes (10) and (11) are provided with viscosity adjusting means (13) and (15) for the liquid (12). ,
The electrodes (10) and (11) are connected so as to increase or decrease the viscosity of the liquid (12) by raising or lowering the voltage. The numbers in parentheses () indicate the corresponding elements in the drawings for the sake of convenience, and therefore the present description is not limited to the description in the drawings. below

The same applies to the column of [Operation].

[0005]

With the above-mentioned structure, according to the present invention, the viscosity of the liquid (12) is increased or decreased by increasing or decreasing the voltage between the electrodes (10) and (11) according to the magnitude of the vibration. It acts to condition the liquid (12) as an optimal damping member to absorb the vibration.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a view showing an embodiment of a damping wall device according to the present invention, and FIG. 2 is a sectional side view of FIG.

As shown in FIG. 1, the structure 1 has pillars 2 standing upright at a predetermined interval, and a beam 3 is formed between the pillars 2 so that the pillars 2 are connected to each other. It is installed horizontally. A wall 5 made of precast concrete is provided in a space surrounded by columns 2 and 2 adjacent to each other in the horizontal direction and beams 3 and 3 adjacent to each other in the vertical direction in a form connected to the beam 3 above in the drawing. Between the lower edge 5d of the wall 5 in the figure and the upper surface 3d of the beam adjacent to the lower edge 5d, a damper frame 17 constituting the damping wall device 6 is provided between the beam 3 and the wall 5. It is provided in the form of connecting. Incidentally, both side edge portions 5c, 5c and the lower edge portion 5 in the figure other than the portion of the wall 5 supported by the damper frame 17 are shown.
In d, a gap 9 is formed between the surrounding pillars 2 and beams 3.

As shown in FIG. 2, the damper frame 17 includes a metallic cathode frame 10 and an anode frame 11 in which a liquid storage space 16 is formed, and the frame 10,
The mounting plates 7 and 7 are arranged at the top and the bottom in FIG. The cathode frame 10 includes side plates 10a and 10a.
2 are fixed to the upper surface 3d of the beam 3 via a mounting plate 7 made of an insulating material in such a manner that the parts face each other and extend in the direction perpendicular to the paper surface in FIG.
Is formed in the shape of a container having a U-shaped cross section so as to be able to store the liquid, so that the liquid storage space 16 is provided in the cathode frame 10.
Has been placed. In the liquid storage space 16, a liquid 12 made of a known electrorheological fluid that can develop a viscosity corresponding to the voltage when a voltage is applied forms side walls 10a, 10a and a bottom plate in a form of forming an open liquid surface 12a. The partition plate 11a of the metallic anode frame 11 having a T-shaped cross section is stored so as to be surrounded by the liquid storage space 16, that is, between the side plates 10a and 10a. It is arranged so as to extend in a direction perpendicular to the paper surface. Anode frame 1
On the lower side of FIG. 1 in the drawing, a gap 19 is formed between the lower end portion of the partition plate 11a and the bottom plate 10b of the cathode frame 10 so that the liquid 12 can communicate therewith. The upper portion is fixed to the lower edge portion 5d of the wall 5 via a mounting plate 7 made of an insulating material. Further, as shown in FIG. 1, the beam 3 is provided with a vibration sensor 13 for detecting the vibration of the structure 1, and the voltage sensor 15 is connected to the vibration sensor 13. The voltage control device 15 is connected to the cathode frame 10 and the anode frame 11 of each damping wall device 6, and the voltage control device 15 applies an arbitrary voltage between the cathode frame 10 and the anode frame 11. It is configured to be able to.

Since the structure 1 and the like have the above-described structure, the structure 1 does not vibrate in a normal state, so that the open liquid surface 12a of the liquid 12 is kept horizontal.
In the normal state, it is preferable to maintain a predetermined voltage VH between the cathode frame 10 and the anode frame 11 via the voltage controller 15 to increase the viscosity of the liquid 12 and solidify it. By doing so, the wall 5 is supported to the beam 3 through the solidified liquid 12 to a certain degree of rigidity, and as a result, artificial vibration (mechanical equipment, exercise facility, etc.) generated in the structure 1 occurs. Vibration that can occur)
It is possible to prevent the wall 5 from unnecessarily oscillating due to vibrations generated outside the structure 1 (ground vibration caused by traveling of a vehicle). Further, by solidifying the liquid 12 in this way, it is possible to prevent the liquid 12 from overflowing from the liquid storage space 16 to the outside of the damper frame 17. Next, when the structure 1 vibrates in the horizontal arrows A and B directions due to an earthquake or wind, relative vibration occurs between the beam 3 and the wall 5 in the directions A and B, and the vibrations are generated. The vibration sensor 13 detects and outputs a vibration detection signal S1 to the voltage controller 15. In response to this, the voltage control device 15 sets the optimum viscosity ML of the liquid 12 for absorbing the vibration of the structure 1, and sets the viscosity ML to the liquid 12
An appropriate voltage VL for expressing the above is set. Then, the voltage controller 15 applies the voltage VL to the cathode frame 1
0 is applied between the anode frames 11. Then, when the voltage VL is applied between the cathode frame 10 and the anode frame 11, the liquid 12, which is an electrorheological fluid, is applied to the voltage VL.
Accordingly, the most suitable viscosity ML for reducing the vibration of the structure 1 is developed. That is, the liquid 12 becomes an optimum damping member for absorbing the vibration generated in the structure 1. In this state, when the beam 3 and the wall 5 relatively vibrate in the directions of arrows A and B in FIG. 1 and the cathode frame 10 and the anode frame 11 relatively vibrate in the directions of arrows A and B, the vibration Is the liquid 1 that has become the damping member in the liquid storage space 16.
It is rapidly absorbed in a form that is absorbed by viscous deformation of No. 2. At this time, as shown in FIG. 2, the liquid storage space 16 is arranged between the adjacent columns 2 and 2 so as to extend over substantially the entire length in the directions of arrows A and B, which are the vibration directions of the structure 1. Therefore, the vibration of the structure 1 is caused by the arrow A of the liquid 12,
It can be effectively damped in the form of being distributed and distributed over the entire part in the B direction. When the vibration of the structure 1 is damped as described above, the liquid 12 that is an electrorheological fluid is used.
Since the larger the potential difference between the cathode and the anode, that is, the larger the voltage between the cathode frame 10 and the anode frame 11, the viscosity increases and the binding force increases, so that the voltage is controlled by the voltage control device 15. The liquid 12 is continuously adjusted to have such a viscosity that the vibration generated in the structure 1 is accurately damped by controlling and adjusting the vibration every moment so that the vibration generated in the structure 1 is large or small. It is possible to effectively attenuate it at all times. That is, the damping wall device 6 can continuously respond to both a small vibration due to a small earthquake or wind and a large vibration due to a large earthquake by appropriately adjusting the viscosity of the liquid 12 via the voltage control device 15. Can be done. In this way, the liquid 12 in which the vibration generated between the beam 3 and the wall 5 becomes an appropriate viscous damping member
When the sway of the structure 1 is absorbed by, the voltage VL between the cathode frame 10 and the anode frame 11 is restored to the voltage VH via the voltage control device 15, and the voltage of the liquid 12 is increased accordingly. If the viscosity is increased and solidified, the wall 5 can be rigidly supported again on the beam 3 again, and aftershocks in the structure 1 can be prevented from remaining forever. The viscosity of the liquid 12 is
Since it is possible to freely adjust the voltage between the cathode frame 10 and the anode frame 11 by raising and lowering it through the voltage control device 15, increasing the viscosity of the liquid 12 increases the energy absorption capacity that can be absorbed. Therefore, even if the liquid 12 has a small volume, the vibration energy of the structure 1 can be efficiently absorbed, and therefore, the volume of the liquid 12 can be reduced and the damper frame 17 can be downsized. Further, similarly, by reducing the viscosity of the liquid 12, it is possible to sensitively respond to minute vibration of the structure 1. Since the liquid 12 can be stored in the liquid storage space 16 in an arbitrary amount, it is easy to change the storage amount of the liquid 12 according to the state of the structure 1 and the damping condition even at the construction site. You can do it. Therefore, it is possible to freely make the damping wall device 6 respond to large and small vibrations of the structure 1 to exert a high damping effect at all times.

In the above-described embodiment, the liquid 12 is stored in the cathode frame 10 having a U-shaped cross section as a container, and the partition plate 11a of the anode frame 11 having a T-shaped cross section is immersed in the liquid 12. Although the example in which the damper frame 17 is configured has been described in the above, in the present invention, the liquid 12 composed of the electrorheological fluid absorbs the relative vibration generated between the wall 5 and the beam 3, that is, the vibration is suppressed. It suffices that the wall device 6 can be deformed with arbitrary viscosity in the directions of arrows A and B in FIG. 1, which are set damping directions, so that the shapes, arrangements and polarities of the cathode frame 10 and the anode frame 11 can be determined. Can be changed arbitrarily. Therefore, the electrodes for applying the voltage to the liquid 12 are not necessarily limited to the cathode frame 10 and the anode frame 11. Further, although the example in which the vibration sensor 13 is provided on the beam 3 has been described in the embodiment, the installation positions of the vibration sensor 13 and the voltage control device 15 may be arbitrarily set, and further,
A plurality of damping wall devices 6 may be connected to the vibration sensor 13 and the voltage control device 15.

[0011]

As described above, according to the present invention,
Having a plurality of columns 2 and beams 3, of which columns 2 and beams 3,
In a structure 1 in which a seismic resistant element member such as a wall 5 is provided between adjacent columns 2 and beams 3, a damper frame in which a liquid storage space 16 is formed inside the beam 3 and the seismic resistant element member. A frame 17 or the like is arranged and provided, a liquid 12 made of an electrorheological fluid is stored in a liquid storage space of the frame, electrodes such as a cathode frame 10 and an anode frame 11 are stored in the liquid storage space 16, and the electrorheological fluid is Is provided so that a voltage can be applied to the liquid 12, and a viscous adjusting means for the liquid 12, such as a vibration sensor 13 and a voltage control device 15, is applied to the electrode to increase or decrease the voltage between the electrodes. Since the connection is made so that the viscosity can be increased or decreased, the viscosity of the liquid 12 is increased or decreased by increasing or decreasing the voltage between the electrodes momentarily according to the magnitude of the vibration, and the liquid 12 is It can be adjusted as an optimal damping member for absorbing this vibration. That is, the viscosity of the liquid 12 is adjusted by the viscosity adjusting means so as to have the optimum viscosity for damping the vibration of the structure 1, so that the liquid 12 is always absorbed regardless of the magnitude of the vibration generated in the structure 1. It is possible to effectively damp the large and small vibrations. Therefore, the damping wall device 6 according to the present invention is located between the pillar 2 and the beam 3 of the structure 1 and various vibrations generated in the pillar 2, the beam 3,
That is, it is possible to effectively respond to a small tremor caused by wind or the like and a large tremor caused by a large earthquake continuously. Furthermore, the viscosity of the liquid 12 can be easily and freely adjusted by simply increasing and decreasing the voltage via the voltage adjusting means, thereby increasing the viscosity of the liquid 12 and increasing the vibration energy absorption capacity, or Liquid 12
Since it can be used to reduce the viscosity of the structure to sensitively respond to the minute vibration of the structure 1, and also to rigidly support the seismic resistant element member to the beam 3 when the structure 1 is not vibrating, With the amount of the liquid 12, it is possible to selectively exert effective vibration damping ability in various ways.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a damping wall device according to the present invention.

FIG. 2 is a sectional side view of FIG.

[Explanation of symbols]

 1 ... Structure 2 ... Pillar 3 ... Beam 5 ... Wall (seismic element member) 6 ... Damping wall device 10 ... Cathode frame (electrode) 11 ... Anode frame (electrode) 12 ... Liquid 13 …… Vibration sensor (viscosity adjusting means) 15 …… Voltage control device (viscosity adjusting means) 17 …… Damper frame (frame)

Claims (1)

[Claims] 1. A structure having a plurality of pillars and beams, wherein among these pillars and beams, seismic resistant element members are provided between adjacent pillars and beams, and between the beams and the seismic resistant element members. A frame in which a liquid storage space is formed is arranged, a liquid consisting of an electrorheological fluid is stored in the liquid storage space of the frame, and an electrode is applied to the liquid consisting of the electrorheological fluid in the liquid storage space. The damping wall device is configured so that the viscosity of the liquid can be increased or decreased by increasing or decreasing a voltage between the electrodes.