JPH0725411Y2 - Wall structure incorporating a vibration damping device - Google Patents

Description

[Detailed Description of Device] a. Purpose of the Invention [Industrial Application Field] The present invention relates to a wall structure of a building structure that opposes a strong forced vibration force such as an earthquake motion, and more particularly to a wall structure incorporating a vibration damping device.

[Conventional technology]

When a building or other building structure vibrates due to a forced vibration force such as an earthquake and causes deformation, the deformation is roughly classified into shear deformation in which each floor moves horizontally and bending deformation in which each floor moves with inclination. To be done. The shearing and bending deformations that occur in the building structure due to the earthquake or the like spread to the wall that blocks the space portion defined by the columns and beams of each floor, and damage the wall.

In view of the above-mentioned point, conventionally, a wall structure in which a vibration damping device utilizing the viscous shear resistance of a highly viscous substance is incorporated in the space defined by the columns and beams of each layer (Japanese Patent Publication No. 54-28).
No. 226), or a wall structure in which the wall itself is configured to generate viscous shear resistance of a highly viscous substance (JP-A-61-87068).
No.), and a wall structure incorporating a hydraulic damper (piston-orifice type) between the column and the wall.

However, the above-mentioned conventional technique using the former viscous shear resistance force has a performance advantage that not only a large resistance force can be obtained but also it reacts extremely sensitively to a minute displacement. Since all of them use high-viscosity substances, there is a problem of leakage of the viscous substances, so-called sealing means need special consideration, and the resistance plates that cause a great influence on the generation of viscous shear resistance force. There is a problem in manufacturing that flatness, parallelism, and maintenance of minute gaps between resistance plates are difficult, and it is difficult to manufacture them with high precision. This manufacturing difficulty increases as the size of the device or the wall itself increases.

Further, while the latter conventional technology using the hydraulic damper has an advantage that a large capacity one can be manufactured relatively easily, on the other hand, the sealing material is constantly subjected to internal stress, and the sealing material is easily damaged. There is a problem.

[Problems to be solved by the invention]

In view of the above points, the present invention aims to obtain a wall structure incorporating a vibration damping device by using a vibration damping device which is easy to manufacture and has a large vibration damping function with a relatively small structure. is there.

B. Configuration of the Invention [Means for Solving Problems] The present invention employs the following technical means (configuration) in order to achieve the above-mentioned object. That is, a wall body that blocks the space portion is arranged in a space portion defined by columns and beams that form the frame of the building structure, and the wall body faces the beam at its upper edge portion. A notch recess is formed, and the notch recess has a casing internally provided with a substantially hollow cylindrical working chamber; at least one resistance vane is provided on an outer surface, and the resistance vane is actuated. A vibration damping device comprising: a rotary shaft member positioned in a room and rotatably supported by the casing; and a metal plastic substance such as lead closely packed in the working chamber wall and a detent means in the working chamber. Is fixed to the beam by making the plate surface of the casing orthogonal to the side surface of the cutout recess, and the outer peripheral surface of the rotary shaft protruding from the casing is between the side surfaces of the cutout recess of the wall body. The tensioned material is wound around at least once And said that you are.

[Action]

Large shear deformation and bending deformation occur in a building structure such as a building due to an earthquake or the like, and due to the deformation, an excellent relative displacement of periodic shear deformation occurs between the beam and the wall body of each floor.

Along with this, the tension members whose end portions are respectively fixed between the side surfaces of the cutout concave portion of the wall body are horizontally displaced.

Due to the horizontal displacement of the tension member, the rotational force is periodically transmitted to the rotary shaft body that interlocks with the tension member.

When the rotating shaft is about to rotate cyclically, the metal-plastic material densely filled in the working chamber of the casing with the inner wall of the working chamber and the rotation stopping means is located in the working chamber of the casing. The resistance blade causes plastic deformation in the vicinity of the resistance blade.

Energy is consumed when the metallic plastic material is plastically deformed, and the rotational movement of the rotary shaft body is attenuated. Since the energy consumption associated with the plastic deformation of the metallic plastic material is extremely large, this periodic rotational movement is quickly damped, and as a result, the relative displacement between the beam and the wall is prevented. Since the relative displacement between the beam and the wall body is prevented, in other words, the seismic energy that causes the relative displacement between the beam and the wall body is absorbed, the damage of the wall body is prevented.

〔Example〕

An embodiment of a wall structure incorporating the vibration damping device of the present invention will be described with reference to the drawings.

(Structure of Embodiment) FIGS. 1 to 4 show an embodiment thereof. That is, the first
The figure shows the entire wall structure, and FIGS. 2 to 4 show the detailed structure of each part.

Referring to FIG. 1 and FIG. 2, 1 and 2 are columns and beams that form the frame of a building structure, and a wall body 4 is closed in a space 3 defined by the columns 1 and 2. Installed. The wall 4
Is fixedly installed by, for example, groove fitting means or the like so that relative displacement is allowed with respect to the pillar 1 and the beam 2.

The wall 4 has a predetermined thickness, and a rectangular notch recess 5 is provided at the upper edge of the wall 4, and the side face 5a of the notch recess 5 has a narrow width in a direction orthogonal to the side face 5a. Recessed grooves 6 are formed respectively. The groove 6 opens upward.

A mounting plate 8 having a through hole 8a on the side surface of the cutout recess 5
However, the through hole 8a is fixed to the groove 6 so as to communicate therewith.

Then, the tension member 10 is attached to the attachment plate 8. That is, the threaded portions 11a are formed on the outer surfaces of both ends of the tension member 10.
The gripping body 11 provided with is fixed by caulking, the threaded portion 11a of the gripping body 11 is inserted into the through hole 8a of the mounting plate 8, and the nut 12 inserted using the space of the concave groove 6 is screwed. The tension member 10 is fixed and the tension member 10 is fixed.

Further, the vibration damping device S is fixed to the lower surface of the beam 2 via the mounting member 14 so as to face the notched concave portion 5 of the wall body 4.

FIG. 3 and FIG. 4 show an exemplary embodiment of this vibration damping device S.

That is, this vibration damping device S has a cylindrical casing 17 having a substantially hollow cylindrical working chamber 16 therein, and a resistance vane 18 on the outer surface thereof.
It includes a rotary shaft body 19 that is positioned in the casing 16 and is rotatably supported at a central axis position in the casing 17, and lead P that is densely filled in the working chamber 16.

More specifically, the casing 17 includes a divided body 17A in which a pot-shaped concave portion 21 having a substantially cylindrical shape is formed inside, and a lid-shaped divided body provided so as to face the concave portion 21 of the divided body 17A. 17B
And appropriate fixing means (eg welding, bolts, etc.)
The two divided bodies 17A and 17B are integrally assembled with each other.
A circular hole 22 is formed in the center of each of the split bodies 17A and 17B, and the rotary shaft body 19 is rotatably supported in the circular hole 22 via a bearing 23.

The working chamber 16 is a sealed space, and a protrusion 25 as a rotation stopping means is formed on the circumferential side wall surface thereof, in other words, on the side wall surface of the pan-shaped recess 21.

In the present embodiment, the protrusions 25 are provided at two locations facing the side wall of the working chamber 16, but they may be provided at one location or at three or more locations at equal intervals. Also, the protrusion 25
Instead of this, a wavy uneven portion may be used. Further, when the working chamber 16, in other words, the pot-shaped recess 21 has a quadrangular shape (or a polygonal shape), no special rotation stopping means is required.

In the working chamber 16, the resistance blades 18 are provided on the outer peripheral surface of the rotary shaft body 19 so as to project toward the mutually opposing sides. The width of the resistance vane 18 substantially matches the width of the working chamber 16 and does not form a gap.

Also, the top portion 18a of the resistance wing 18 has a rounded shape,
Moreover, the side surface portion 18b is also formed into a gently curved surface. The top portion 18a and the inner wall of the working chamber 16 are kept at a distance that does not change the plastic deformation characteristics of lead described later.

The rotary shaft body 19 projects from the side portion 17a of the casing 17, and an annular groove 19a is provided in the projecting shaft portion to receive the tension member 10.

Lead P as an energy absorber is filled in the working chamber 16 in which the resistance blade 18 is incorporated.

The lead P is cast in the working chamber 16 in a molten state (melting point 327.5 ° C.). In the assembling process of the apparatus S, this pouring is performed by pouring molten metal from a sprue (not shown) formed in the casing 17 in a state where the casing 17 is assembled, and then a blind lid (not shown) is provided at the inlet. To be fitted. The lead P to be used includes, in addition to pure lead, a lead alloy or a mixture with lead and other substances.

This vibration damping device S is one example mode applied to the present invention, and it goes without saying that a vibration damping device of another mode can be applied as long as it has essential requirements.

The attachment portion 14 attaches the vibration damping device S to the beam 2. That is, the mounting portion 14 rigidly grips the casing 17 and is fixed to the lower surface of the beam 2 via the flange 14a thereof. In this attachment, the plate surface 17a of the casing 17 of the vibration damping device S is provided with the cutout recess 5 of the wall body 4.
Of the rotary shaft body 19 is parallel to the side surface 5a of the cutout recess 5 and orthogonal to the tension member 10.

More specifically, the vibration damping device S is arranged in the cutout recess 5 with an extra space. Further, the wall structure is arranged in a building structure not only in one direction but also in multiple directions, but it is important that the wall structure is arranged in order to suppress an excellent vibration displacement.

(Operation of Embodiment) The wall structure incorporating the vibration damping device of the present embodiment configured as described above operates in the following manner against earthquake motion.

When a periodic forced vibration due to a seismic motion acts on a structure, the vibration is transmitted to the pillar 1 and the beam 2, but the wall body 4 is displaceably insulated from these, and the wall body 4 itself. Is regarded as a rigid body in the direction along the wall surface, so that an excellent relative displacement of shear deformation occurs between the beam 2 and the wall body 4.

Along with this, the tension members 10 whose end portions are respectively fixed to the mounting plate 8 on the side surface of the cutout recess 5 of the wall body 4 are horizontally displaced. Due to the horizontal displacement of the tension member 10, a frictional force is generated in the winding portion between the tension member 10 and the rotating shaft body 19, and the rotating shaft body 19 is periodically rotated by the frictional force.

Due to the rotation of the rotary shaft body 19, the resistance vanes 18 of the rotary shaft body 19 in the working chamber 16 of the casing 17 push the filled lead P by the gentle side curved surface to plastically deform the lead P and periodically. It is rotationally displaced. Energy is consumed by the plastic deformation of the lead P, and the movement of the rotary shaft body 19 is attenuated.

In this movement, the lead P is prevented from being rotated by the rotation stopping means 25, and the movement of the resistance blade 18 is effectively used for the plastic deformation of the lead P.

The above displacements are periodic and therefore the rotary shaft 19
Movement becomes periodic, and the energy consumption associated with the plastic deformation of lead is extremely large, this periodic rotational movement is rapidly attenuated, and eventually shear deformation between the beam 2 and the wall body 4 The relative displacement due to is rapidly attenuated.

In the present embodiment, a vibration damping device is provided between the upper end of the wall body of each floor and the beam where shear deformation is predominant in the high-rise building structure, and this deformation is directly mediated by the tension member 10. And transmitted to the vibration damping device. Therefore, the majority of the deformation energy is absorbed by the vibration damping device S, and the energy loss in the deformation transmission path is minimal.
Therefore, there is an advantage that energy absorption, that is, vibration damping, is made extremely sensitive.

Further, since the vibration damping device S incorporated in the present wall structure consumes energy associated with the plastic fluidization of lead, it is possible to obtain a large energy absorption capacity, and the size thereof is reduced accordingly, and it can be compactly incorporated into the wall body. .

(Modification) FIGS. 5 and 6 show an embodiment of the wound portion between the tension member 10 and the rotary shaft body 19.

FIG. 5 shows an engagement mode in which the locking body 27 crimped and fixed to the tension member 10 is fitted and fixed in the engagement concave portion 19b formed on the outer surface of the rotary shaft body 19. Due to the horizontal displacement of the tension member 10, the engaging body 27 of the tension member 19 and the engaging recess of the rotary shaft body 19
A shearing force is generated in the fitting and fixing portion with 19b, and the shearing force causes the rotating member to rotate periodically.

FIG. 6 shows an engagement mode in which the tension member 10 is fixed to the rotary shaft body 19 by a stopper plate 28 at the winding portion where the tension member 10 is wound around the outer circumference of the rotary shaft body 19. A horizontal displacement of the tension member 10 causes a shearing force to be generated in the fixing portion of the tension member 10 to the rotating shaft body 19 by the stopper plate 28, and the shearing force causes the tensioning member 10 to rotate periodically.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention.

(A) In this embodiment, an example of the vibration damping device S is shown, but it is not possible to prevent the application of another vibration damping device using a lead body and having the same function. For example, in the vibration damping device S of this embodiment, the resistance blades 18 are stretched on both sides, but they may be stretched on one side or radially. Further, the resistance blade 18 may be made sufficiently smaller than the width of the working chamber 16.

(B) In this embodiment, the tension member 10 is attached to the attachment plate 8 fixed to the side surface of the cutout recess 5 of the wall body 4 through the groove 6, but the tension member 10 is directly attached. The groove 6 is not necessary if it is welded to the mounting plate 8 via the gripping body 11, or if the tension member 10 is embedded and fixed in the wall body 4, the mounting plate 8 and the groove 6 are used. Is also unnecessary.

(C) As an energy absorber, in addition to lead, metals such as tin, zinc, aluminum, sodium, and copper;
Superplastic alloys such as tin alloys, zinc-aluminum-copper are used. Furthermore, when lead, or the substances mentioned above and are selected, a combination of two or more of these substances is also possible.

When the above substances and are used as the energy absorber, these substances are attenuated by the energy absorption accompanying the plastic fluidization, like the lead body.

C. Effects of the Invention A wall structure incorporating the vibration damping device of the present invention has the following unique effects.

Since the vibration energy generated in the building structure is absorbed by the energy consumption associated with the plastic fluidization of the lead body, a large damping force can be obtained and the vibration damping device itself that consumes the energy. The structure is simple and the wall structure is easy to manufacture.

In combination with the above, the vibration damping device can be downsized and can be compactly incorporated into the wall body.

The predominant relative displacement between the building structure and the frame wall is transmitted to the vibration damping device via the tendons with as little energy loss as possible and the vibration energy is efficiently absorbed.

In this vibration damping device, the desired energy absorbing ability can be easily obtained by appropriately changing the number and size of the resistance blades that cause plastic deformation of lead closely packed in the working chamber of the casing. .

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing a wall structure incorporating a vibration damping device of the present invention, FIG. 2 is an enlarged sectional view taken along the line II of FIG. 1, and FIG. 3 is a vibration incorporated in this wall structure. Cross-sectional side view of the damping device (cross-sectional view taken along the line III-III in FIG. 4), FIG. 4 is a cross-sectional view taken along the line II-II in FIG. 3, and FIGS. It is a figure which shows the other aspect of the engaging part with. 1 ... Pillar, 2 ... Beam, 3 ... Space part, 4 ... Wall body, 5 ... Notch concave part, 5a ... Side surface, 8 ... Mounting plate, 10 ... Tensile member, 16 ... Working chamber, 17 ... Casing, 18 ... Resistance Wings, 19 ... Rotating shafts, 25 ...
Rotation stopping means, P ... Lead, S ... Vibration damping device

Front page continuation (72) Inventor Ikuo Shimoda 8 Kirihara-cho, Fujisawa-shi, Kanagawa, Oiles Kogyo Co., Ltd. (72) Chiaki Tsuruya, 8 Kirihara-cho, Fujisawa, Kanagawa (56) Reference Reference JP 62-197574 (JP, A)

Claims (3)

[Scope of utility model registration request] 1. A wall body for blocking the space portion is arranged in a space portion defined by columns and beams forming a frame of a building structure, and the beam body has an upper edge portion with the beam. And a casing having a substantially hollow cylindrical working chamber therein; and having at least one resistance vane on the outer surface thereof. A vibration damping device comprising: a rotary shaft member positioned in the working chamber and rotatably supported by the casing; and a metal plastic material densely filled in the working chamber with the working chamber inner wall and a detent means. Fixed to the beam so that the plate surface of the casing is orthogonal to the side surface of the cutout recess, and the outer peripheral surface of the rotary shaft protruding from the casing is stretched between the side surfaces of the cutout recess of the wall body. The tensioned material has been wound at least once , Incorporating wall structure vibration damping device, characterized in that. 2. The tension member is engaged with the rotary shaft body by fitting and fixing a locking body fixed to the tension member in a recess formed in the rotary shaft body. A wall structure incorporating the described vibration damping device. 3. The tension member is engaged with the rotary shaft body by being fixed to the rotary shaft body by a stopper plate.
A wall structure incorporating the described vibration damping device.