JP2005220714A - Vibration control device for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control device for a building capable of absorbing energy even when the inter-layer deformation of the building by earthquake is small, capable of developing large damping force, easily installable in an existing or newly built building since its size is compact. <P>SOLUTION: This vibration control device for the building installed in the existing or the newly built building comprises upper and lower stubs 11 and 12, upper and lower damping materials 13 and 13, and a pendulum member 14 formed by connecting its upper and lower end parts to the upper and lower damping materials 13. The pendulum member 14 is formed to be connected to the upper and lower stubs when the projections 11a and 12a of the upper and lower stubs are inserted into opening holes 14a and 14a. Accordingly, the deformation of the damping material 13 can be amplified, for example, to 1.2 to 2.5 times by transferring the inter-layer deformation of the building to a relative deformation between the projections 11a and 12a and amplifying the relative deformation by the pendulum member 14. As a result, since the vibration control device 10 is allowed to act effectively from a time when the deformation of the building is small and can absorb the energy efficiently, it can develop the large damping force. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vibration control device for a building attached to an existing or new building.

Conventionally, as a vibration control device for a building, a device using a brace of a frame as a vibration control member (for example, Patent Document 1), a device using a vibration control material attached in the middle of a stud, and the like are known. .
For example, as shown in FIG. 10, the former includes a damper (damping material) 5 in the middle of a brace 4 installed via a mounting gusset 3 or the like in an internal space of a frame surrounded by columns 1 and beams 2. The damper 5 absorbs vibration energy in the event of an earthquake or the like, and is called a brace-type vibration damping device.
The latter, for example, as shown in FIG. 11, arranges the stud 7 having the mounting stubs 6 and 6 between the upper and lower beams 2 and 2, and attaches the mounting stubs 6 and 6 to the upper and lower beams 2 and 2, respectively. Further, a damper (damping material) 8 is interposed in a part (for example, the central portion) of the stud 7 and the damper 8 absorbs vibration energy in the event of an earthquake or the like. It is called.
JP 2003-49557 A

However, the conventional technology has the following problems.
That is, first, in both of the conventional brace type vibration damping device and the stud type vibration damping device, when the interlayer deformation of the building due to an earthquake or the like is small, the deformation transmitted to the vibration damping material (energy absorbing material) is also small. The energy absorption amount of the damping material is small, the damping force that attenuates the vibration of the building is also small, and the damping device does not work very effectively.
In addition, since the conventional vibration damping device is large, for example, in the case of a brace-type vibration damping device that is often used in steel buildings, etc., only one vibration damping device is installed in a frame surrounded by column beams. Can not. On the other hand, in the case of a stud-type vibration control device that is often used in reinforced concrete buildings, etc., only one vibration control device can be installed at the center of the span due to the limitation of the size of the mounting stub. In this way, conventional vibration control devices are quite large, so there are limited places to install them, and it is difficult to install the required number, and `` construction while living '' is strongly required for seismic reinforcement of existing buildings In other words, it is difficult to respond to construction while using the building as usual.

  The present invention has been made in view of the above circumstances, and can absorb a large amount of energy even when the interlayer deformation of a building due to an earthquake or the like is small, exhibits a large damping force, and has a compact shape that is already installed or newly built. An object of the present invention is to provide a building vibration control device that can be easily installed in a building.

In order to achieve the above object, the invention described in claim 1 is a building vibration damping device 10 attached to an existing or new building, for example, as shown in FIGS.
On each floor of the building, a plate-like upper stub 11 attached to the column head or the upper beam, and a plate-like lower stub 12 attached to the column base or the lower beam,
Upper and lower vibration damping materials 13 and 13 respectively provided on the upper part of the upper stub 11 and the lower part of the lower stub 12;
A plate-like pendulum member 14 having upper and lower ends joined to the upper and lower vibration damping materials 13 and 13, respectively, and amplifying and transmitting interlayer deformation of the building to the upper and lower vibration damping materials 13 and 13;
The pendulum member 14 has projections 11a and 12a provided at the lower end portion of the upper stub 11 and the upper end portion of the lower stub 12, respectively, in openings 14a and 14a formed in the central portion of the pendulum member 14 so as to be spaced apart vertically. Are inserted into the upper stub 11 and the lower stub 12, respectively.

  Here, the stigma is the head that is the upper end of the pillar provided on the floor with the building, and the pedestal is the leg that is the lower end of the pillar provided on the floor with the building. .

According to the first aspect of the present invention, in order to effectively operate the vibration damping device from a small deformation of the building, the interlayer deformation of the building is amplified and transmitted to the vibration damping material using a lever mechanism.
That is, when an interlayer deformation occurs in the building, the upper stub and the lower stub move to the left and right, respectively, so that the interlayer deformation of the building is provided at the protrusion provided at the lower end of the upper stub and the upper end of the lower stub. It shifts to relative deformation between the projected protrusions. Since the protrusions provided on the upper stub and the lower stub are respectively inserted into the openings formed in the pendulum member, the pendulum member swings like a pendulum around the center between the openings. The upper and lower ends of the pendulum member are amplified in vibration, and thereby the relative deformation between the protrusions is amplified. Therefore, since the deformation of the damping material joined to the upper and lower ends of the pendulum member can be amplified, the damping device can be effectively operated from a small deformation of the building. In addition, since the deformation speed of the damping material can be amplified by the interlayer deformation speed of the building, it is more efficient when using a damping material whose energy absorption performance is proportional to the deformation speed (for example, viscoelastic material). Can absorb energy and exert a great damping force.

Further, the pendulum member swings like a pendulum, and the deformation is transmitted to the two damping materials at the upper and lower parts of the pendulum member while amplifying the interlayer deformation of the building, so that the deformation of the building can be distributed and transmitted to two places. Therefore, the stress applied to the damping material and the pendulum member per location is reduced, and the damping material and the pendulum member can be made compact, and the upper stub, the lower stub and the pendulum member are each plate-shaped. Can be made compact. Therefore, the entire apparatus can be made compact. In particular, when a plate-like viscoelastic material is used as the damping material, the thickness of the damping device can be made very thin.
Therefore, compared to conventional vibration control devices, the overall device can be made significantly smaller, so there are fewer restrictions on the installation location, the required number of units can be installed relatively easily, and easily in both existing and new buildings. Can be installed.

The invention according to claim 2 is the vibration damping device for a building according to claim 1,
At least one of the two openings 14a and 14a formed in the pendulum member 14 is configured such that the protrusions 11a and 12a are slidable in the axial direction of the pendulum member 14. To do.

  When the opening is configured such that the protrusion is slidable in the axial direction of the pendulum member, for example, the opening may be formed as a long hole extending in the axial direction of the pendulum member.

  According to the second aspect of the present invention, when interlayer deformation occurs in the building, the pendulum member swings like a pendulum around the center between the openings as the center of rotation. Although the distance between the top and bottom of the hole varies slightly, at least one of the two openings is configured so that the projection can slide in the axial direction of the pendulum member. Even if the distance between the top and bottom of the two openings varies slightly, the projection slides in the opening, so that the pendulum member can be smoothly shaken and the vibration damping device can be operated smoothly.

The invention according to claim 3 is the vibration damping device for a building according to claim 1 or 2,
Bearings 17 and 17 are attached to the openings 14a and 14a, and the protrusions 11a and 12a are inserted into the bearings 17 and 17, respectively.

  According to the third aspect of the present invention, when an interlayer deformation occurs in the building, the pendulum member swings like a pendulum around the central portion between the openings as the center of rotation. The hole also rotates slightly, and friction is generated between the opening and the protrusion. Since the protrusion is inserted into the bearing attached to the opening, the friction can be reduced. Therefore, the pendulum member can be shaken smoothly, and the vibration damping device can be operated smoothly.

The invention according to claim 4 is the vibration damping device for a building according to any one of claims 1 to 3,
The ratio of the distance A between the protrusions 11a and 12a provided on the upper stub 11 and the lower stub 12 to the distance B between the opening 14a formed in the pendulum member 14 and the damping material 13 is 1 : It is set to 1.2-2.5.

  According to the invention described in claim 4, the interlayer deformation of the building shifts to a relative deformation between the protrusion provided at the lower end portion of the upper stub and the protrusion provided at the upper end portion of the lower stub. The ratio between the distance between the protrusions provided on the stub and the lower stub and the distance between the opening formed in the pendulum member and the damping material is set to 1: 1.2 to 2.5. Therefore, the deformation of the damping material joined to the upper and lower ends of the pendulum member can be amplified by 1.2 to 2.5 times the interlayer deformation of the building by the lever principle, so that the deformation from the small deformation of the building can be controlled. The vibration device can work more effectively. In addition, since the deformation speed of the damping material can be amplified to 1.2 to 2.5 times the interlayer deformation speed of the building, the damping material whose energy absorption performance is proportional to the deformation speed (for example, viscoelastic material) When is used, energy can be absorbed more efficiently and a large damping force can be exhibited.

The invention according to claim 5 is the building vibration control device according to any one of claims 1 to 3, for example, as shown in FIGS.
The distance between the protrusions 11a, 12a provided on the upper stub 11 and the lower stub 12, respectively, and the upper opening 14a and the upper stub 11 of the two openings 14a, 14a formed in the pendulum member 14 The ratio of the distance to the provided damping material 13 is A: B,
The distance between the projections 11a and 12a provided on the upper stub 11 and the lower stub 12 respectively, and the lower opening 14a and the lower stub 12 of the two openings 14a and 14a formed on the pendulum member 14 If the ratio of the distance to the provided damping material 13 is A: C,
B> A and C> A and B ≠ C are set.

Here, the relationship between B and C may be B> C or C> B.
For example, when A = 1, it is desirable that B = about 1.2 and C = about 2.4.

According to the invention described in claim 5, the interlayer deformation of the building shifts to a relative deformation between the protrusion provided at the lower end portion of the upper stub and the protrusion provided at the upper end portion of the lower stub. The ratio between the distance between the protrusions provided on each of the stub and the lower stub and the distance between the upper opening and the damping material provided on the upper stub among the two openings formed in the pendulum member. Since A: B, the deformation amount and deformation speed of the damping material provided on the upper stub can be amplified to B / A times the interlayer deformation amount and interlayer deformation speed of the building by the lever principle. Further, an interval between the protrusions provided on the upper stub and the lower stub, and an interval between the lower opening of the two openings formed in the pendulum member and the damping material provided on the lower stub, Therefore, the deformation amount and deformation speed of the damping material provided in the lower stub can be amplified to C / A times the interlayer deformation amount and interlayer deformation speed of the building.
In this way, the amount of interlayer deformation and the interlayer deformation speed of the building can be amplified to B / A times or C / A times, so that the vibration control device can be effectively operated from small deformations to large deformations of the building, and energy absorption performance. When a vibration damping material (for example, a viscoelastic material) that is proportional to the deformation speed is used, energy can be absorbed more effectively.

  In addition, when a plate-like viscoelastic material is used as the damping material, it is known that the energy absorption performance of the viscoelastic material has a property that depends on the strain amount of the viscoelastic material. When the amount of strain exceeds 200%, the energy absorption performance decreases. Increasing the leverage to transmit the building deformation to the viscoelastic material is very effective when the building interlayer deformation is small due to wind or small earthquake, but when the building interlayer deformation is large due to a large earthquake Is disadvantageous due to the aforementioned properties of the viscoelastic material. Therefore, in the present invention, it is possible to change the amplification factor of the interlayer deformation by changing the lever ratio above and below the pendulum member. Thereby, from the case where the interlayer deformation of a building is small to the case where it is large, the vibration damping device of the present invention can maintain almost constant energy absorption performance.

According to the present invention, the upper stub and the lower stub, the upper and lower vibration damping materials respectively provided on the upper part of the upper stub and the lower part of the lower stub, and the upper and lower ends are respectively joined to the upper and lower vibration damping materials. A pendulum member, and the pendulum member has projections provided respectively at the lower end portion of the upper stub and the upper end portion of the lower stub inserted in respective openings formed in the central portion of the pendulum member so as to be spaced apart from each other. By connecting to the upper stub and the lower stub, the interlayer deformation of the building is transferred to the relative deformation between the protrusions, and the relative deformation between the protrusions is amplified by the pendulum member, so that the damping material The deformation can be amplified to about 1.2 to 2.5 times by this principle. Therefore, the vibration control device can be effectively operated from a small deformation of the building.
Moreover, since the deformation speed of the vibration damping material can be amplified to 1.2 to 2.5 times the interlayer deformation speed of the building, for example, by using the vibration damping material whose energy absorption performance is proportional to the deformation speed, It can absorb energy efficiently and exert a great damping force.

Further, the pendulum member swings like a pendulum, and the deformation is transmitted to two damping materials at the upper and lower end portions of the pendulum member while amplifying the interlayer deformation of the building. Therefore, since the deformation of the building can be distributed and transmitted to two locations, the stress on the damping material and the pendulum member per location is reduced, and the damping material and the pendulum member can be made compact. Compared to the vibration control device, it can be significantly reduced. Thereby, there are few restrictions on an installation place and the required number can be installed comparatively easily. In particular, since the thickness of the device can be reduced, the effectiveness of the balcony or corridor is not significantly impaired, so that it can be attached to the outer surface of the column. For this reason, it can be easily applied not only to newly built buildings but also to seismic reinforcement while existing buildings are in place.
Furthermore, since the apparatus is compact, the number of parts is small, and the size of the parts is relatively small, a large heavy machine is not required when installing the apparatus. For this reason, construction is easy and construction cost can be reduced.
In addition, the amount of inter-layer deformation and the inter-layer deformation speed of the building can be amplified to B / A times or C / A times, so that the vibration control device can work effectively from small deformations to large deformations of the building and energy absorption performance. When a damping material (for example, a viscoelastic material) that is proportional to the deformation speed is used, energy can be absorbed more effectively.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
1 to 4 show an example of a vibration damping device for a building according to the present invention. FIG. 1 is a front view thereof, FIG. 2 is a side view, and FIG. 3 is a front view showing a deformed state of a pendulum member of the vibration damping device. 4 and 4 are front views showing a state in which the vibration damping device is attached to the pillar.

As shown in FIGS. 1 to 4, a building vibration damping device (hereinafter abbreviated as a vibration damping device) 10 according to the present embodiment includes an upper stub 11, a lower stub 12, and upper and lower vibration damping materials 13. , 13 and a pendulum member 14.
Each of the upper stub 11 and the lower stub 12 is a thin plate formed of a steel plate, and the upper stub 11 is attached and fixed to the head of the pillar 1 by a fastening member S such as an anchor bolt, and the lower stub 12 is a pillar. The fixing member S is attached and fixed to the leg portion of 1. In addition, the pillar 1 is a pillar provided in the floor with a building, and does not mean the whole pillar extended from the 1st floor of a building to a rooftop. However, in this embodiment, a part of the entire pillar extending from the first floor to the roof, that is, a part located on a certain floor is used as the pillar 1.

The upper stub 11 and the lower stub 12 are vertically long thin plates extending to the vicinity of the center of the column 1, and a predetermined gap is formed between the lower end of the upper stub 11 and the upper end of the lower stub 11. Has been.
A columnar protrusion 11 a is provided at a right angle to the upper stub 11 at the lower end of the upper stub 11, and a columnar protrusion 12 a is provided at a right angle to the lower stub 12 at the upper end of the lower stub 12. It has been.

At the upper end of the upper stub 11, a plate 15 is provided at a right angle to the upper stub 11, and the plates 16 and 16 are suspended from the lower surface of the plate 15 in parallel with each other. An upper damping material 13 is provided on the plates 16 and 16. The damping material 13 is composed of two plate-like viscoelastic materials 13a and 13a, and the viscoelastic materials 13a and 13a are attached to the plates 16 and 16, respectively.
Further, a plate 15 is provided at a lower end portion of the lower stub 12 at a right angle to the lower stub 12, and plates 16, 16 are erected in parallel on the upper surface of the plate 15. The plates 16 and 16 are provided with a lower damping material 13. The damping material 13 is composed of two plate-like viscoelastic materials 13a and 13a, and the viscoelastic materials 13a and 13a are attached to the plates 16 and 16, respectively.

The pendulum member 14 amplifies and transmits the interlayer deformation of the building to the upper and lower vibration damping materials 13 and 13 and is formed of a vertically long thin plate-shaped steel plate.
The upper end portion of the pendulum member 14 is joined to the upper damping material 13. That is, the upper end portion of the pendulum member 14 is inserted between the two plate-like viscoelastic materials 13a and 13a constituting the vibration damping material 13, and the upper end portion of the pendulum member 14 is the viscoelastic material. It is stuck to 13a, 13a with an adhesive or the like.
The lower end portion of the pendulum member 14 is joined to the lower vibration damping material 13. That is, the lower end portion of the pendulum member 14 is inserted between the two plate-like viscoelastic materials 13a and 13a constituting the vibration damping material 13, and the lower end portion of the pendulum member 14 is the viscoelastic material. It is stuck to 13a, 13a with an adhesive or the like.

In addition, two openings 14a and 14a are formed in the central portion of the pendulum member 14 so as to be separated from each other in the vertical direction. The openings 14a and 14a are arranged symmetrically with respect to the center of the pendulum member 14, and circular bearings 17 and 17 are attached to the openings 14a and 14a. In the circular bearings 17 and 17, the protrusion 11a of the upper stub 11 and the protrusion 12a of the lower stub 12 are respectively inserted. As a result, the pendulum member 14 is connected to the upper stub 11 and the lower stub 12.
Further, at least one of the openings 14a and 14a is configured such that the protrusion 11a (12a) can slide in the axial direction of the pendulum member 14. For example, at least one of the openings 14a is formed as a long hole in the axial direction of the pendulum member 14, and the circular bearing 17 is slidable in the axial direction of the pendulum member 14 in the opening 14a that is the long hole. Thus, the protrusion 11a (12a) is configured to be slidable in the axial direction of the pendulum member 14.

  Further, the ratio between the distance A between the projections 11a and 12a provided on the upper stub 11 and the lower stub 12 and the distance B between the opening 14a formed in the pendulum member 14 and the damping material 13 is as follows. 1: 1.5, the amount of deformation and the deformation speed of the damping material 13 are amplified to 1.5 times the interlayer deformation and interlayer deformation speed of the building by the lever principle.

  As shown in FIG. 4, the vibration damping device 10 configured as described above is attached to the outer surfaces of a plurality of pillars 1 located on a floor where an existing building is located.

Then, as shown in FIG. 3, when an interlayer deformation occurs in the building, the upper stub 11 and the lower stub 12 move to the left and right, respectively, so that the interlayer deformation of the building is provided at the lower end of the upper stub 11. The process shifts to a relative deformation between the protrusion 11a and the protrusion 12a provided at the upper end of the lower stub 12.
Since the projections 11a and 12a provided on the upper stub 11 and the lower stub 12 are respectively inserted into the openings 14a and 14a formed in the pendulum member 14 via the circular bearings 17 and 17, the pendulum member 14 Swings like a pendulum with the center between the apertures 14a and 14a as the rotation center O, and the upper and lower ends of the pendulum member 14 amplify the swing, thereby amplifying the relative deformation between the protrusions 11a and 12a. The
Therefore, since the deformation of the vibration damping materials 13 and 13 respectively joined to the upper and lower end portions of the pendulum member 14 can be amplified by 1.5 times, the vibration damping device can be effectively operated from a small deformation of the building.
Further, the deformation speed of the vibration damping materials 13 and 13 can be amplified by 1.5 times the interlayer deformation speed of the building, and the vibration damping material 13 made of a viscoelastic material whose energy absorption performance is proportional to the deformation speed. Since 13 is used, energy can be absorbed more efficiently and a large damping force can be exhibited.

Further, the pendulum member 14 swings like a pendulum, and the deformation is transmitted to the two damping materials 13 and 13 at the upper and lower ends of the pendulum member 14 while amplifying the interlayer deformation of the building. Therefore, since the deformation of the building can be distributed and transmitted to two locations, the stress applied to the damping material 13 and the pendulum member 14 per location is reduced, and the damping material 13 and the pendulum member 14 can be made compact. The device 10 can be made much smaller than conventional vibration damping devices.
Thereby, there are few restrictions on an installation place and the required number can be installed comparatively easily. In particular, since the thickness of the vibration damping device 10 can be reduced, the effectiveness of the balcony and the hallway is not significantly impaired, so that it can be attached to the outer surface of the pillar 1. For this reason, it can be easily applied not only to newly built buildings but also to seismic reinforcement while existing buildings are in place.
Furthermore, since the vibration damping device 10 is compact, has a small number of parts, and the size of the parts is relatively small, a large heavy machine is not required when installing the apparatus. For this reason, construction is easy and construction cost can be reduced.

Further, when the interlayer deformation occurs in the building, the pendulum member 14 swings like a pendulum with the central portion between the apertures 14a and 14a as the rotation center O. Therefore, the two apertures 14a and 14a formed in the pendulum member 14 Although the distance between the upper and lower portions of 14a varies slightly, at least one of the two openings 14a and 14a is configured such that the protrusion 11a or the protrusion 12a can slide in the axial direction of the pendulum member 14. Even if the distance between the top and bottom of the two openings 14a and 14a slightly varies with the swing of the pendulum member 14, the protrusions 11a and 12a slide in the openings 14a and 14a, so that the pendulum member 14 can be smoothly moved. The vibration control device 10 can be operated smoothly.
In addition, since the protrusions 11a and 12a are inserted into the circular bearings 17 and 17 attached to the openings 14a and 14a, friction between the protrusions 11a and 12a and the openings 14a and 14a can be reduced. Therefore, the pendulum member 14 can be smoothly shaken, and the damping device 10 can be smoothly operated in this respect.

(Second Embodiment)
5 and 6 show another example of the vibration damping device for a building according to the present invention. FIG. 5 is a front view thereof, and FIG. 6 is a side view thereof.
In this embodiment, in order to improve energy absorption performance and reduce the number of vibration damping devices to be installed, the pendulum members 14 are arranged on both sides of the upper and lower stubs, and the number of vibration damping materials 13 to be installed is four. There are several places.

Hereinafter, the building vibration damping device of the present embodiment (hereinafter, abbreviated as a vibration damping device) will be described in detail. In the vibration damping device 20 of the present embodiment, the same reference numerals are given to the common parts with the vibration damping device 10 of the first embodiment, and the description thereof is omitted or simplified.
As in the case of the vibration damping device 10, the building vibration damping device 20 of the present embodiment has an upper stub 11, a lower stub 12, four upper and lower vibration damping materials 13, and two pendulum members 14 and 14. And.

  At the upper end of the upper stub 11, a flange portion 21 is integrally formed at a right angle with the upper stub 11, and the flange portion 21 is attached to the upper beam 2 a with a fastening material S such as an anchor bolt, thereby A stub 11 is attached to the upper beam 2a. Further, a flange portion 22 is integrally formed at a right angle with the lower stub 12 at the lower end of the lower stub 11, and the flange portion 22 is attached to the lower beam 2b by a fastening material S such as an anchor bolt. The lower stub 12 is attached to the lower beam 2b.

  A columnar protrusion 11b is provided at a lower end portion of the upper stub 11 so as to pass through the upper stub 11 at a right angle to the upper stub 11, and a columnar protrusion 12b at the upper end portion of the lower stub 12. Is provided so as to penetrate the lower stub 12 at a right angle to the lower stub 12. In other words, the lower stub 11 is provided with a protrusion 11b at the lower end portion so as to protrude on both sides, and the lower stub 12 is provided with a protrusion 12b at the upper end portion so as to protrude on both sides.

Two L-shaped plates 25, 25 are fixed to the upper end portion of the upper stub 11 by fastening materials such as bolts so as to protrude at right angles to both sides of the upper stub 11, Plates 16 and 16 are suspended from the lower surface of each plate 25 in parallel. The plates 16 and 16 are provided with an upper damping material 13. That is, two damping materials 13 are provided on the upper side.
Further, two L-shaped plates 25, 25 are fixed to the lower end portion of the lower stub 12 by fastening materials such as bolts so as to protrude at right angles to both sides of the lower stub 12. The plates 16 and 16 are erected in parallel with each other on the upper surface of each plate 25. The plates 16 and 16 are provided with a lower damping material 13. That is, two damping materials 13 are provided on the lower side.

The two pendulum members 14 and 14 are respectively arranged on both sides of the upper stub 11 and the lower stub 12, and the upper end portion of one pendulum member 14 is joined to one upper damping material 13, and the other pendulum The upper end portion of the member 14 is joined to the other damping material 13 on the upper side.
The lower end of one pendulum member 14 is joined to one lower damping material 13, and the lower end of the other pendulum member 14 is joined to the other lower damping material 13.

Further, circular bearings 17, 17 are attached to the openings 14 a, 14 a formed in the central part of the pendulum member 14, and the protrusions 11 b of the upper stub 11 and the lower part are attached to the circular bearings 17, 17. The protrusion 12b of the stub 12 is inserted through each. Accordingly, the two pendulum members 14 and 14 are connected to the upper stub 11 and the lower stub 12.
Further, the ratio between the distance A between the protrusions 11b and 12b provided on the upper stub 11 and the lower stub 12 and the distance B between the opening 14a formed in the pendulum member 14 and the damping material 13 is as follows. 1: 1.5, the amount of deformation and the deformation speed of the damping material 13 are amplified to 1.5 times the interlayer deformation and interlayer deformation speed of the building by the lever principle.

In the vibration damping device 20 having such a configuration, when the interlayer deformation occurs in the building, the upper stub 11 and the lower stub 12 move to the left and right, respectively, as in the vibration damping device 10. The interlayer deformation shifts to a relative deformation between the protrusion 11b provided at the lower end of the upper stub 11 and the protrusion 12b provided at the upper end of the lower stub 12, and is provided on the upper stub 11 and the lower stub 12, respectively. Since the protrusions 11b and 12b are inserted into the openings 14a and 14a formed in the two pendulum members 14 and 14 through the circular bearings 17 and 17, respectively, the pendulum members 14 and 14 are opened to the openings 14a and 14a. 14a swings around the rotation center O as a pendulum, and swings are amplified at the upper and lower ends of the pendulum members 14 and 14, whereby the protrusions 11b and 12 The relative deformation between is amplified.
Therefore, the deformation of the total four damping materials 13... Joined to the upper and lower ends of the pendulum members 14 and 14 can be amplified by a factor of 1.5, so that the damping device can work effectively from a small deformation of the building. Can do.
Further, the deformation speed of the four vibration damping materials 13 can be amplified 1.5 times the interlayer deformation speed of the building, and the vibration damping material 13 made of a viscoelastic material whose energy absorption performance is proportional to the deformation speed. Can be used to absorb energy more efficiently and exert a large damping force.
Furthermore, since the vibration damping device 20 has improved energy absorption performance, there is an advantage that the number of installed devices can be smaller than that of the vibration damping device 10.
It is needless to say that the vibration damping device 20 of the present embodiment can obtain the same effects as those of the vibration damping device 10.

(Third embodiment)
7 to 9 show other examples of the vibration damping device for a building according to the present invention. FIG. 7 is a front view thereof, FIG. 8 is a side view thereof, and FIG. 9 is a deformation state of a pendulum member of the vibration damping device. FIG.
The damping device 30 shown in these drawings is different from the damping device 10 shown in FIGS. 1 to 4 in that the amplification factor of the interlayer deformation is changed by changing the lever ratio above and below the pendulum member 14. Since this is possible, this will be described in detail below, and the same parts as those in the vibration damping device 10 will be denoted by the same reference numerals, and description thereof will be omitted or simplified.

In the vibration damping device 30 of this embodiment, the upper and lower lengths of the upper stub 11 are formed shorter than the upper and lower lengths of the lower stub 12 and the two openings 14a and 14a formed in the pendulum member 14 are It is positioned slightly above the case of the vibration damping device 10.
Then, by slightly changing the configuration of the upper stub 11, the lower stub 12, and the pendulum member 14 as described above, the lever ratio is changed between the upper and lower sides of the pendulum member 14 as follows.
That is, the distance between the protrusions 11a and 12a provided on the upper stub 11 and the lower stub 12, respectively, and the upper opening 14a and the upper stub 11 out of the two openings 14a and 14a formed in the pendulum member 14. The ratio of the distance to the provided damping material 13 is A: B, the distance between the protrusions 11a and 12a provided on the upper stub 11 and the lower stub 12 respectively, and the two formed on the pendulum member 14 Assuming that the ratio of the distance between the lower opening 14a of the openings 14a, 14a and the damping material 13 provided in the lower stub 12 is A: C, A = 1, B = 1.2, C = It is set to 2.4. That is, A: B = 1: 1.2 and A: C = 1: 2.4.

In the vibration damping device 30 configured as described above, as in the vibration damping device 10, as shown in FIG. 9, when an interlayer deformation occurs in the building, the pendulum member 14 rotates in the center between the openings 14 a and 14 a. It swings like a pendulum as the center O, and the interlayer deformation of the building is transmitted to the upper and lower damping materials 13 and 13 while being amplified at different amplification factors.
And since the ratio of the space | interval (B) from the space | interval (A) of protrusion 11a, 12a of a stub and the upper surface protrusion 11a (upper opening 14a) to the center of the upper damping material 13 was set to 1: 1.2, The deformation amount and deformation speed of the upper damping material 13a can be amplified 1.2 times. The ratio of the distance (A) between the stub protrusions 11a and 12a to the distance (C) from the lower protrusion 12a (lower opening 14a) to the center of the lower vibration damping material 13a was set to 1: 2.4. Therefore, the deformation amount and deformation speed of the lower damping material 13 can be amplified 2.4 times.
As described above, the amount of interlayer deformation and the interlayer deformation speed of the building can be amplified to 1.2 times or 2.4 times, so that the vibration control device can be effectively operated from a small deformation to a large deformation of the building and energy absorption performance. Since the vibration damping material is a viscoelastic material proportional to the deformation speed, energy can be absorbed more effectively.
In addition, it is very effective to transmit the building deformation to the viscoelastic material by increasing the lever ratio, when the interlayer deformation of the building is small due to wind or small earthquakes. If it is large, the above properties of the viscoelastic material are disadvantageous. Therefore, in the present vibration damping device, it is possible to change the amplification factor of the interlayer deformation by changing the lever ratio above and below the pendulum member 14, so that the interlayer deformation of the building is almost constant from the small case to the large case. Energy absorption performance can be maintained.

An example of the vibration damping device of the building of the present invention is shown, and is the front view. It is a side view of a vibration damping device. It is a front view which shows the deformation | transformation state of the pendulum member of the damping device shown in FIG. It is a front view which shows the state which attached the damping device to the pillar. It shows the other example of the vibration damping device of the building of this invention, and is the front view. It is a side view of a vibration damping device. It shows the other example of the vibration damping device of the building of this invention, and is the front view. It is a side view of a vibration damping device. It is a front view which shows the deformation | transformation state of the pendulum member of the damping device shown in FIG. It is a front view which shows an example of the vibration control apparatus of the conventional building. It is a front view which shows the other example of the conventional damping device of a building.

Explanation of symbols

1 Pillar 2a Upper beam 2b Lower beam 10, 20, 30 Damping device 11 Upper stub 12 Lower stub 11a, 11b, 12a, 12b Protrusion 13 Damping material 14 Pendulum member 14a Opening hole 17 Bearing

Claims (5)

A vibration control device for a building attached to an existing or new building,
On each floor of the building, a plate-like upper stub attached to the capital or upper beam, and a plate-like lower stub attached to the column base or lower beam,
Upper and lower vibration damping materials respectively provided on the upper part of the upper stub and the lower part of the lower stub;
The upper and lower ends are joined to the upper and lower vibration damping materials, respectively, and plate-like pendulum members that amplify and transmit the interlayer deformation of the building to the upper and lower vibration damping materials,
The pendulum member is inserted into the respective openings formed in the central portion thereof so as to be spaced apart from each other by inserting protrusions respectively provided at the lower end portion of the upper stub and the upper end portion of the lower stub, thereby A vibration control device for a building, which is connected to an upper stub and a lower stub. In the building damping device according to claim 1,
At least one of the two openings formed in the pendulum member is configured such that the protrusion is slidable in the axial direction of the pendulum member. In the building vibration control device according to claim 1 or 2,
A building damping device, wherein a bearing is attached to the opening, and the protrusion is inserted into the bearing. In the building damping device according to any one of claims 1 to 3,
The ratio between the distance between the protrusions provided on the upper stub and the lower stub and the distance between the opening formed in the pendulum member and the damping material is set to 1: 1.2 to 2.5. A building vibration control device characterized by being made. In the building damping device according to any one of claims 1 to 3,
An interval between the protrusions provided on the upper stub and the lower stub, and an interval between the upper opening of the two openings formed in the pendulum member and the damping material provided on the upper stub. The ratio is A: B
An interval between the protrusions provided on the upper stub and the lower stub, and an interval between the lower opening of the two openings formed in the pendulum member and the damping material provided on the lower stub. If the ratio is A: C,
B> A and C> A and B ≠ C.

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