JP2003239564A - Damping method and device using rocking type curtain wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damping method and device for a building executed using attaching means of a rocking type curtain wall. <P>SOLUTION: The curtain wall 10 is supported so as to rockingly rotate in a in-plane direction about a virtual rotating center P according to story deformation occurring in the building due to an earthquake, etc. This device is provided with a damper 11 producing a damping force in deformation of the rocking rotation. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field of a building vibration control method and a vibration control device which are carried out by using a locking type curtain wall mounting means which has been increasing in number in recent years.

[0002]

2. Description of the Related Art As a means for reducing the shaking of a building against strong winds and earthquakes, a technique of installing a damper between the layers of the building is known, and in recent years, it has been widely used particularly in high-rise steel-framed buildings. For example, FIGS. 6 and 7 show an embodiment in which an oil damper 4 is combined with a brace 3 incorporated in the surface of a column-beam structure formed by a column 1 and a beam 2. FIG. 8 shows an example in which a viscoelastic damper 6 utilizing the wall 5 is incorporated in the surface of the column beam structure. In addition to this, a wide variety of dampers such as viscous dampers and steel dampers are used.

As shown in FIG. 6, FIG. 7, and FIG. 8, when a damper is installed between the layers of a building, interlayer deformation is rigidly transmitted to the damper, and the damping force of the damper is rigidly applied to the layers. Need to communicate. Therefore, a transmission mechanism such as a rigid brace 3 or a wall 5 is required, which not only causes a cost increase but also a very large constraint condition in the layout plan for building design.

On the other hand, an invention is also known in which a damper is installed by using an existing curtain wall. For example, (1) "Curtain wall with built-in viscous damping device" disclosed in Japanese Utility Model Publication No. 4-11093 has a damping wall provided along the inside of the curtain wall, and between the wall and the curtain wall. This is a configuration in which a damping viscous material is filled and sealed. When interlayer deformation occurs in the building due to an earthquake, a gap occurs between the curtain wall and the damping wall, and the viscous material interposed there creates a resistance according to the relative movement speed of the shift, and the damping action works. . This invention is a technique that is applied to a so-called sway type curtain wall in which the curtain wall moves horizontally, it is difficult to apply to a locking type curtain wall, and even if it is applied, the effect is low. is there.

(2) The "vibration damping device having a steel frame structure" disclosed in Japanese Patent Laid-Open No. 11-293811 is an invention for improving the vibration characteristics of a building by utilizing a so-called locking type curtain wall. When the curtain wall is attached to the frame of the ramen structure in a rotatable state, the curtain wall is prevented from rotating against a small sway of the frame due to horizontal force between the curtain wall and the frame. However, a coil spring or an elastic body such as rubber is provided to allow the curtain wall to rotate by expanding or contracting in response to a greater shaking. The present invention suppresses lifting (rotation) of the curtain wall with respect to a small amplitude by the precompressing force of the elastic body, and adds the rigidity of the curtain wall to the rigidity of the building frame. In other words, only for the purpose of adding rigidity, there is no damping function, so effective damping cannot be expected. Moreover, since the movement of the curtain wall is suppressed when the amplitude is small, even if a damping device is added, the damping function does not work,
It has no effect.

(3) The "dynamic absorber using curtain wall" disclosed in Japanese Patent Publication No. 8-6502 constitutes a mass damper (dynamic absorber) using the mass of the curtain wall. . As a fastener that slidably supports the curtain wall on the wall surface of the building so as to be able to follow the interlayer deformation, an elasto-plastic damper (L-shaped support metal fitting) having a deformable section is provided to enhance the deformability. The rigidity and damping amount of the elasto-plastic damper are designed to have values according to the natural frequency of the building, and a dynamic vibration absorber having a curtain wall as a weight is configured. Therefore, the curtain wall is configured to freely vibrate according to the vibration of the building.

(4) As described above, at present, there is still no effective vibration control method or vibration control device using the curtain wall for the locking type curtain wall.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide an effective damping method and damping device using a locking type curtain wall.

A second object of the present invention is to provide a damping system for a curtain wall using a rocking system, in which a damping device effectively functions to exert a damping effect on a wide range of vibrations of the curtain wall caused by an earthquake from a small amplitude to a large amplitude. A method and a vibration control device.

A further object of the present invention is to realize a compact vibration control mechanism by providing a supporting member (supporting means) of the curtain wall with an elastic function or a damping function.
It is an object of the present invention to provide a vibration control method and a vibration control device using a locking type curtain wall.

[0011]

As a means for solving the above-mentioned problems of the prior art, the rocking type curtain wall utilizing damping method according to the invention of claim 1 occurs in a building due to an earthquake or the like. The curtain wall is supported so as to perform rocking rotation in an in-plane direction around one virtual rotation center due to interlayer deformation, and a damping device is installed to generate a damping force when the rocking rotation is deformed. And

The invention described in claim 2 is characterized in that, in the damping method using the locking type curtain wall described in claim 1, the curtain wall supporting means is provided with a damping function.

According to a third aspect of the present invention, in the vibration control method using the locking type curtain wall according to the first aspect, a damping device is installed separately from the supporting means of the curtain wall.

According to a fourth aspect of the present invention, there is provided a rocking type curtain wall damping device according to the present invention, wherein the curtain wall is 1 due to the interlayer deformation caused in the building due to an earthquake or the like.
Being supported by a supporting device so as to perform rocking rotation in an in-plane direction around each virtual rotation center, and a damping device that generates a damping force at the time of deformation of the locking rotation of the curtain wall is combined with the supporting device. It is characterized by being.

According to a fifth aspect of the present invention, in the vibration control device using the locking type curtain wall according to the fourth aspect, the damping device is a high damping rubber device or a sliding friction structure.

According to a sixth aspect of the present invention, in a vibration control device using a rocking type curtain wall, in the in-plane direction with a virtual center of rotation of one curtain wall as a center due to interlayer deformation caused in a building due to an earthquake or the like. Supported by a supporting device so as to perform rocking rotation, and a damping device that is independent of the supporting device is installed in an arrangement that generates a damping force when the curtain wall is deformed during the locking rotation. Is characterized by.

According to a seventh aspect of the present invention, in the vibration control device for locking type curtain wall use according to the sixth aspect, the damping device is a viscoelastic damper or an oil damper.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The rocking type curtain wall according to the invention described in claims 4 to 7 for carrying out the damping method using the locking type curtain wall according to the invention described in claims 1 to 3 below. The seismic control device to be used will be described based on the embodiment shown in FIGS. 1 to 5.

The main point of the present invention is that the curtain wall 10 is supported so as to perform rocking rotation in the in-plane direction around one virtual rotation center P as a result of interlayer deformation occurring in the building due to an earthquake or the like, and occurs at this time. Installing the damping device in a configuration and / or arrangement that produces a damping force when the rocking rotation is deformed.

First, in the embodiment shown in FIGS. 1a and 1b, the left and right supporting means for supporting the curtain wall 10 to the lower beam 2 are arranged so that the normal R thereof passes through the virtual rotation center P. It is composed of a rubber device 11. In the fastener for supporting the upper portion of the curtain wall 10, the bolt (or pin) 12 positioned on the perpendicular line Q passing through the virtual center of rotation P is fixed to the upper beam 2, and the loose hole 14 of the support metal 13 is fixed. It is configured to be passed through inside and fastened to a structure that can withstand an external force in the out-of-plane direction.

Therefore, when a building subjected to a horizontal force during an earthquake undergoes interlayer deformation, as shown in FIG. 1b, the curtain wall 10 has shear deformation of the high damping rubber device 11 and the bolt 12 inside the loose hole 14. Due to the flexibility of moving, the rocking rotation is performed in the in-plane direction about the virtual rotation center P.

As a result, the high damping rubber device 11 is shown in FIG.
When b is compared with b, a clear deformation occurs and a damping force is generated. That is, the rubber of the high damping rubber device 11 has a thickness of 1 cm to
It is about 3 cm, and the shear rigidity is extremely small compared to the compression rigidity. Therefore, when an external force acts, it has a property of being easily deformed in the shearing direction, and shearing centering on the virtual rotation center P is generated with good responsiveness to exert a damping action.
Moreover, as a characteristic of the high damping rubber device 11, after the deformation as described above, the restoring force for returning the curtain wall 10 to the original position also acts.

Now, the difference between the locking rotation of the curtain wall 10 realized by the above-described structure according to the present invention and the locking operation of the curtain wall, which has conventionally been caused by the interlayer deformation of the building, will be described.

FIG. 9 shows the locking rotation operation of the conventional type.
As shown in the conceptual diagrams at the time of large amplitude in a to c, the curtain wall 10 is supported at only one position 31 or 32 of the two supporting points 31 and 32, and rocking rotation is performed with this supporting point as the center of rotation. However, the other supporting points are in a mode that they are raised. Therefore, when the floating support point returns to its original position, shocking vibration and noise are generated. In addition, since the weight of the curtain wall 10 directly exerts a resistance action and does not cause displacement when the amplitude is small, where habitability is a problem,
Even if a damper is installed, the damping effect on the building structure can hardly be expected.

On the other hand, in the case of the embodiment shown in FIG. 1 of the present invention, on the other hand, the elasticity of the high damping rubber device 11 supports the curtain wall 10 so that it can be moved easily (softly), and thus even when the amplitude is small. Rocking rotation around the virtual rotation center P is performed with good responsiveness. Therefore, the damping effect of the damper works effectively.

The fastener for supporting the upper portion of the curtain wall 10 is not limited to a single fastener as shown in FIG. Although not shown, the curtain wall 1
It can be implemented by using a flexible fastener having the same structure as in FIG. 1 at the two upper corners of 0 or the upper and lower four corners.

Alternatively, as another different fastener, as shown in FIG.
As in the embodiments shown in a and b, the left end of the flat steel plate 15 having an appropriate width in the direction perpendicular to the paper surface so as to sufficiently exert the supporting force in the out-of-plane direction is fixed to the column 1 and the right end is fixed. It is also possible to use a fastener having a structure in which is fixed to the curtain wall 10.

The flat steel plate 15 has high rigidity in the out-of-plane direction and the horizontal direction, but has low rigidity in the vertical direction. Therefore, with the interlayer deformation due to an earthquake or the like, the curtain wall 10 can be supported so as to perform rocking rotation in the in-plane direction about one virtual rotation center P, and an effect of restraining in the out-of-plane direction can be expected. When a plurality of flat steel plates 15 are installed as fasteners, they are installed in a direction perpendicular to the normal line so that the rigidity in the direction of the normal line connecting to the virtual rotation center P becomes low.

Next, FIGS. 3a and 3b show the curtain wall 1
An embodiment using a pair of left and right sliding bearings 16 is shown as a means that also serves as a support for 0 and a damping device.

The sliding member 16a constituting the sliding bearing 16 has a small coefficient of friction, which is the lower base 16b.
It is fixed to. On the other hand, the mount 16c on the side of the curtain wall 10 slides on the sliding member 16a, and the frictional force at that time absorbs vibration energy and exerts a damping action.

No restoring force is generated in the sliding bearing 16 having the above structure. However, since the restoring force to restore the original shape is generated in the frame of the building structure itself, the curtain wall 1
0 is also restored to its original position.

When the sliding bearing 16 as shown in FIG. 3 is implemented, it is more preferable that the sliding surface is an arc surface having the virtual rotation center P as a center in order to realize smoother sliding.

In the embodiment of FIG. 3, the means for supporting the upper portion of the curtain wall 10 is substantially the same as that of the embodiment of FIG. 1, but the pin 12 attached to the upper portion of the curtain wall 10 is attached to the beam 2. It is configured to be movable in a loose hole 14 formed by left and right guide plates 17 fixed in parallel to each other vertically.

In the above, the embodiment in which the supporting means of the curtain wall 10 is combined so as to also serve as a damping device has been shown, but the embodiment is not limited to this. The support means and the damping device can also be embodied in different independent or combined configurations.

FIG. 4 shows an embodiment in which an oil damper 18 is used in addition to the sliding bearing 16 shown in FIG. 3 to enhance the damping effect.

The oil damper 18 is arranged in a so-called tangential direction perpendicular to the straight line Q passing through the virtual rotation center P, and is freely rotatable at a connection point 19 with the curtain wall 10 and a connection point 20 with the beam 2. Fittings are used.

Therefore, when a horizontal force due to an earthquake or the like acts, there is no problem in the curtain wall 10 rocking and rotating in the in-plane direction about the virtual rotation center P. Then, the oil damper 18 effectively exhibits the damping force by utilizing the deformation of the rocking rotation.

FIGS. 5a and 5b clearly show an embodiment in which the supporting means of the curtain wall 10 and the damping device are functionally differentiated and independent. Curtain wall 10
A mechanical pin structure is adopted as the support means of the above, and a viscoelastic damper 21 is used as a damping device.

That is, the lower part of the curtain wall 10 is supported so that the pin 22, which is the center of rotation for the rocking rotation, overlaps the bracket on the curtain wall side and the bracket on the beam side, and exhibits rigidity to withstand the out-of-plane force. It is configured to be fastened to a hinge structure. As in the embodiment shown in FIG. 3, the upper part is supported by the pin 12 attached to the upper part of the curtain wall 10 in the loose hole 14 formed by the left and right guide plates 17 fixed vertically and parallel to the beam 2. It is configured to be movable.

A pair of viscoelastic dampers 21 are installed so that the pin 22 of the rotation center is point-symmetric. That is, the fixed arms 21b fixed to the beam 2 are arranged at equal intervals on both sides of the movable arm 21a protruding from the side of the curtain wall 10, and the viscoelastic body 21c is provided between the fixed arm 21b and the movable arm 21a. It is the installed configuration.

Therefore, the curtain wall 10 is pin 2 as shown in FIG.
The rocking rotation easily occurs in the in-plane direction around the center 2, and at that time, the viscoelastic body absorbs energy and exerts a damping force.

[0042]

The effects of the present invention are obtained by utilizing the damping system curtain wall according to the invention described in claims 1 to 3 and the locking system curtain wall according to the invention described in claims 4 to 7. The vibration control device sensitively responds to the rocking rotation of the curtain wall due to an earthquake or the like, and the damping device effectively functions against a wide range of vibrations from a small amplitude to a large amplitude to exert a damping effect. Moreover, since the support point never rises, no shocking vibration or noise is generated when restoring to the original position.

Since the vibration control method and the vibration control device using the curtain wall according to the present invention are configured to use the rocking rotation of the curtain wall, the floor plan in the building design like other normal vibration control devices is required. Since it does not inhibit, it can be widely implemented.

[Brief description of drawings]

1A and 1B are elevational views conceptually showing a first embodiment of a vibration damping device according to the present invention when it is at rest and when it is deformed.

2A and 2B are elevational views conceptually showing a second embodiment of the vibration damping device according to the present invention when it is stationary and when it is deformed.

3A and 3B are elevational views conceptually showing a third embodiment of the vibration damping device according to the present invention when it is stationary and when it is deformed.

FIG. 4 is an elevational view conceptually showing a fourth embodiment of the vibration damping device according to the present invention at rest.

5A and 5B are elevation views conceptually showing a vibration control device according to a fifth embodiment of the present invention when the vibration control device is at rest and when it is deformed.

FIG. 6 is an elevation view showing an example in which a conventional brace and a damper are combined.

FIG. 7 is an elevation view showing another example in which a conventional brace and a damper are combined.

FIG. 8 is an elevation view showing an example in which a conventional wall and a damper are combined.

9A to 9C are views conceptually illustrating rocking rotation of a conventional curtain wall at a large amplitude.

[Explanation of symbols]

10 curtain wall P virtual rotation center 11 Damping device (high damping rubber device) 16 sliding bearing 18 oil damper 21 Viscoelastic damper 12 Support points

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takeshi Katayama             4-3 Hommachi, Chuo-ku, Osaka City Stock Association             Takenaka Corporation Osaka Main Store (72) Inventor Yukihiro Shimano             4-3 Hommachi, Chuo-ku, Osaka City Stock Association             Takenaka Corporation Osaka Main Store (72) Inventor Masami Higashi             4-3 Hommachi, Chuo-ku, Osaka City Stock Association             Takenaka Corporation Osaka Main Store (72) Inventor Koji Fukumoto             4-3 Hommachi, Chuo-ku, Osaka City Stock Association             Takenaka Corporation Osaka Main Store F term (reference) 2E002 PA04 PA08 RA03 RB01 RB06                       TA01 WA01 XA03                 3J048 AA01 AA06 AC01 BA01 BD08                       BE03 BE12 DA02 EA07

Claims (7)

[Claims] 1. A curtain wall is supported so as to perform rocking rotation in an in-plane direction around one virtual rotation center due to interlayer deformation generated in a building due to an earthquake or the like, and a damping force is generated when the rocking rotation is deformed. A damping method using a curtain-type curtain wall, which is characterized by installing a damping device so that it will be generated. 2. The damping method for a curtain wall using a rocking system according to claim 1, wherein the supporting means of the curtain wall is provided with a damping function. 3. The vibration control method using a locking type curtain wall according to claim 1, wherein a damping device is installed separately from the supporting means of the curtain wall. 4. The curtain wall is supported by a supporting device so as to perform rocking rotation in an in-plane direction around one virtual center of rotation due to interlayer deformation generated in a building due to an earthquake or the like, and the supporting device. A damping device using a rocking type curtain wall, wherein a damping device that generates a damping force when the locking rotation of the curtain wall is deformed is combined. 5. The vibration damping device using the curtain wall of the locking system according to claim 4, wherein the damping device is a high damping rubber device or a sliding friction structure. 6. The curtain wall is supported by a supporting device so as to perform rocking rotation in an in-plane direction around one virtual rotation center due to interlayer deformation generated in a building due to an earthquake or the like; The damping device having a separate and independent structure is installed in an arrangement that generates a damping force when the curtain wall is deformed during the rocking rotation, and a damping system using a curtain wall of a locking system. 7. The vibration damping device using a curtain wall of a rocking system according to claim 6, wherein the damping device is a viscoelastic damper or an oil damper.