JPS63275825A - Vibration absorbing device - Google Patents

Abstract

PURPOSE:To vertically fix pipes and to prevent leakage of a viscous fluid by filling up a large-diameter pipe with a viscous fluid and fitting a small-diameter pipe therein not to be sealed. CONSTITUTION:The interior of an outside pipe having the base 1 at the lower end thereof is filled up with a viscous fluid 3 of high-polymer material, and spacers 7 are fixed at several places of the outer peripheral surface of an inside pipe 6 having the top surface 5 where small holes 4 are bored at the upper end thereof. When the outside pipe 2 the inside pipe 6 are shifted in the axial direction by vibration or earthquake, shearing resistance of the viscous fluid 3 in a very small gap acts as damping force so that vibration absorbing action occurs. Accordingly, the large and small pipes are not seals, so that fixing is restricted to vertical to prevent leakage of the viscous fluid.

Description

[Detailed Description of the Invention] [Field of Application in ργ Industry] This invention is applicable to skyscrapers l? Concerning buildings with low damping performance due to glazed roofs, buildings with large bending deformations in observation towers, and buildings with large span floors - vibration absorption devices that damp vibrations transmitted to buildings where downward movement is a problem and earthquake vibrations. There are things.

[Conventional technology]

Conventionally, a damping wall shown in FIG. 10 is known as an example of a vibration absorbing device. In other words, one steel plate (1) fixed to the upper floor (18) is placed between two steel plates (17) fixed to the floor (16) with a sponge (20) installed at the lower end. , and inserted through the spacer (21), the steel plate (17),
(19) Viscous fluid (22
) was filled with sealing 44 (23)' C-Lj and the outside of the steel plate (17) was: 1 concrete 1- (24) was solidified to form the wall 3, and this damping wall was The building is water I
U...i of viscous fluid that is generated in deformation by igniting I force.
The low resistance J:'C converts the energy of the vibration into heat and absorbs it.

In addition, as another example, a small vibration suppressor is known as shown in FIG. In other words, a small gap is installed inside the external cylinder (25) and a hole (= number J) is installed at the tip of the shaft (26).
The inner cylinder (28) attached to the body (27) is fitted so as to be movable in the axial direction, and the inner cylinder (28) is fitted between the handle (J & J body (27) and the bearing (29) at one end of the outer cylinder (25). Axis (26
) and also covers the shaft (30) protruding inwardly from the other end of the external cylinder (25).
1), attach the bell (31) and the outer cylinder (25).
A 1゛S damper (sealed with a sticky fluid (32) made of 18-molecule lumber filled and sealed) is known.This damper, like the above-mentioned damping wall, Damping is avoided by the shear resistance of the viscous fluid against violent movements.

[Problems that the invention attempts to solve]

, F Conventionally known seismic control walls have a large surface area, and it is necessary to create a minute gap between the steel plates at the edges of the wall, and this gap needs to be maintained at a constant level. It is difficult to perform the same work, and it is necessary to fill the minute gap with viscous fluid and prevent the leakage of viscous fluid. Attaching a quake wall is technically difficult and has manufacturing problems, so it is generally not possible to do so unless it is produced in a factory. heavy,
There is a problem in that it requires a lot of labor and time to transport and install, and also because small vibration dampers are used in various places, Compatible with 6 types of usage: Saru J: Prevents viscous fluid from leaking.
Since it is a closed type using a bell coat, it has the problem of being expensive because it requires one and two close fittings.

[Means for solving problems]

In order to solve problem 1 in F, this invention CAL, lower Ω:
A viscous flow (A (3) is filled in the outer pipe (2) with the closed part (2) closed, and the inner pipe (6) is closed so that there is a minute gap of -T between it and the inner circumferential wall of the outer pipe (2). The means of the fitted vibration absorbing device is indicated by jM.

(Example) Embodiments of the present invention will be described with reference to drawings.

Dimensions J shown in Figure 1 J3 and Figure 2: sea urchin, bottom (1
) is filled with a viscous fluid (3) made of 4A polymer, and the inner pipe (2) is filled with a viscous fluid (3) made of polymer 4A, and the top surface (5) with a small hole (/I) is placed on the right side. 6), solidify subelements (7) made of low-friction synthetic resin such as 7Freon (trade name) at several places on the outer circumferential surface of pipe (2), and attach them to the outer pipe (2).
There is a small hole (/l) in the top surface (5) that is inserted from above.
In order to do this, the inner bar (6) is compressed by the viscous fluid (3) and receives the resistance created by the outer pipe (2).
．． 1 wall with a certain minute gap between them, and if the outer pipe (2) and the inner pipe (6) are misaligned in the axial direction due to vibration or earthquake, the minute gap will be removed. The shearing resistance of the viscous fluid (3) between them is the damping force C(g)
J is the star that causes absorption action.

The bottom surface (1) of the outer pipe (2) and the inner pipe ((3)
) is equipped with a Uniper joint 1-(10) for attachment to the structure (8) or superstructure (9), respectively. ) It is designed to be able to follow all the deformations of the ancient body.

The cross-sectional shape of the outer pipe (2) and the inner pipe (6) is not only circular, but can also be of any appropriate shape, such as a regular shape or a rectangle, as shown in Figure J3 and Figure 4 of S53. This rectangular one can be installed inside the partition wall.

Figure 5 t shows a state where the moon is shining on a tower-shaped building.
As shown in Figure 6, the vibration absorbing device (△) is placed between the lower end (12) of the shaft (11), the door beam (13), and the space ('l) in a diagonal place shape to the extent that the fluid does not flow out. It is designed to avoid horizontal vibrations, and in Fig. 7, the vibration absorbing device (
A) is installed vertically between the beam (13) and the floor (171) along the shaft (11) to avoid large bending deformation. (△) is a column (1
1) and <11) between the beams (13) and the dots (14), a number of them are installed in a wa-shape directly between the nails to cope with horizontal vibrations.1! It's ours.

Figure 9 shows a state in which a vibration absorbing device (△) is applied between the girders (15) of a super-large span building with pillars (11) spaced at 20 m.
The vibration absorber (△) is equipped with a damper. The mounting position can be changed relatively easily, and it is effective in preventing vibration disturbances caused by traffic, walking, etc., and in reducing vertical movement of the ground fim IIM.

〔Effect of the invention〕

Conventional seismic control walls occupy a large area, making it difficult to work on-site as steel plates are required to create minute gaps across the entire wall surface.However, with this invention, it is possible to It is possible to take a pipe with a diameter of 4Jr, fill the large diameter pipe with viscous fluid, and then insert a small diameter pipe. Since the seismic damper is not a closed type, there is no need for filtration, and we decided to cut ready-made pipes with various cross-sectional shapes into appropriate shapes and divide them into large and small pieces.J,-)'(4 C to be a member
There is no need to worry about leakage of viscous fluid, and h1 is limited to the angle of the center of gravity or place.
Easy to transport and install as it is relatively small.
IR price is low.

[Brief explanation of the drawing]

Figures 1 to 9 show embodiments of this invention.
Fig. 1 is a cross-sectional view of the pipe section, Fig. 2 is an enlarged cross-sectional plan view thereof, and Fig. 3 and Fig. 4 are cross-sectional plan views showing other embodiments, respectively. , Fig. 5 is a longitudinal front view showing how the suction device is used, Fig. 6 is an enlarged cutaway front view of a part of the king, and Fig. 7 is an enlarged cutaway front view showing other usage modes.
Fig. 8 is an enlarged cutaway front view showing another usage mode, Fig. 9 is a front view of the IC state when the IC is applied to a building with a large span, and Fig. 10 is a conventionally known Control: Vertical section 1 of electric box [Top view, Figure 11 shows the vertical IQi of a conventionally known small control device.
It is a front view. (2)...outer pipe, (3>...viscosity↑11 fluid,
(6)...Inner pipe. Agent Patent attorney 1 month Tomari Figure 6 Figure 9

Claims (1)

[Claims] A vibration absorber in which a viscous fluid (3) is filled in an outer pipe (2) with its lower end closed, and an inner pipe (6) is fitted so that a certain minute gap exists between it and the inner circumferential wall of the outer pipe (2). Device.