JP2956367B2 - Damping structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping structure capable of damping vibrations in all directions on a horizontal plane during an earthquake or the like.

[0002]

2. Description of the Related Art There are various techniques for controlling the vibration of a structure such as a building. For example, the one shown in FIG.
A brace 5 incorporating a damping device 3 is provided in a part of a frame 1 of a building (Japanese Patent Laid-Open No. 62-148775). However, according to this technique, although there is a large effect on the shearing deformation (the chain line on the left in the figure), the effect is small on the bending deformation (the chain line on the right in the figure). Therefore, it is not so effective for high-rise buildings where bending deformation is dominant as a form of shaking.

Further, as shown in FIGS. 4 and 5, by connecting the upper parts of two buildings 7, 9 with a damping device, the upper part of the buildings is displaced regardless of shearing deformation or bending deformation. There are techniques that can have a great effect on shaking.

[0004] Among them, the one shown in Fig. 4 is one in which the top floors of two completely independent buildings 7, 9 are connected to each other by a passage 11, and a damping device is provided in the passage 11 portion.
On the other hand, the one shown in FIG. 5 looks like one large building from the outside, but in fact two buildings 7, 9 separated from each other are connected to each other by a roof garden 13 at the upper part, and this roof garden 13 Provided with a damping device.

[0005]

However, what is shown in FIG. 4 and FIG. 5 is that two adjacent buildings which are built in parallel are connected by a damping device, and the vibration is damped only in a single direction on a horizontal plane. No action can be taken. That is, the vibration damping effect can be obtained only in the direction connecting the two buildings. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vibration damping structure capable of obtaining a vibration damping action in all directions on a horizontal plane.

[0006]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 comprises a structure in which each of the structures comprises a central frame independently standing independently and an outer peripheral frame surrounding the central frame. On the upper part of the central frame and the outer frame,
Connected to each other via a pin joint to reduce the relative vibration
Fluid damper or friction damper damped by expansion and contraction operation
It is characterized in that a damping device such as a power unit is provided.

[0007] The invention according to claim 2 provides a structure.
A central frame that is independent and independent, and the outside that surrounds the central frame
And a peripheral frame, the upper side of the central frame and the outer peripheral frame.
To interconnect these to dampen their relative vibration
And a floor on each floor of the outer frame is slidably supported in the horizontal direction on the outer frame, and the floor of the outer frame is absorbed by the floor on the same floor of the central frame. It is characterized by being mutually connected via a pin joint.

[0008]

According to the first aspect of the present invention, when a structure shakes in the horizontal direction due to an earthquake or the like, a horizontal relative displacement is generated between the central frame and the outer peripheral frame that are independently independent. Also, since there is an outer frame in all horizontal directions surrounding the periphery of the central frame, the damping device that connects the upper portions of the central frame and the outer frame to each other is provided with a fluid damper or a damper.
Has a damping effect due to the expansion and contraction of friction dampers, etc.
By using a plurality of pin joints arranged in appropriate directions
In addition to providing vibration control in all directions on the horizontal plane ,
Bending deformation occurs in the frame and the outer frame, and this bending deformation
As a result, relative vertical swaying occurred between both frames
Also suppresses this vertical sway and allows for bending deformation.
Can be prevented.

According to the second aspect of the present invention , the structure is
When the object shakes in the horizontal direction,
Horizontal relative displacement between the self-supporting central and outer frames
All water around the central frame
Since the outer frame exists in the horizontal direction, the central frame and the outer frame
A damping device interconnecting the upper parts of the
By arranging several, the shaking in all directions on the horizontal plane
In addition to the vibration-damping effect, the jointed floor of each floor absorbs horizontal displacement even if relative displacement occurs between the central frame and the outer frame by the sliding means, and bends due to vertical displacement. The deformation is absorbed by the pin joint. For this reason, floor bending deformation can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. When viewed from the outside, the structure 15 that looks like one is composed of two mechanically almost independent frames 1
7 and 19. One is a central frame 17 which forms the center of the structure 15, and the other is an outer frame 19 which surrounds the center frame 17 and forms the outer periphery of the structure 15. The central frame 17 has a substantially rectangular horizontal cross section as a whole, and the outer peripheral frame 19 has a generally rectangular ring-shaped horizontal cross section as a whole.

A damping device 21 is provided on the upper part of the frames 17, 19, that is, on the top, and connects the frames 17, 19 to each other. In this embodiment, the damping device 21 is operated to extend and retract.
Damper or friction damper
The dampers 21 are arranged in a substantially horizontal direction and are connected to both frames 17, 19 via a universal type pin joint 23. As shown in FIG. A pair is provided in each of the eight directions, for a total of eight places, so that vibration can be suppressed in any direction of the horizontal plane and the vertical plane .

The roof portion of the structure 15 has a double structure, and the roof 27 of the central frame 17 is horizontally two-dimensionally connected to the ring-shaped roof 25 of the outer frame 19 via, for example, a cart with casters. Is slidably covered. In addition, a waterproof structure is applied to a joint portion between the roofs 25 and 27 in a flexible manner.

On each floor, the floor of the outer frame 19 is
The lower floor 29 is fixed to the outer frame 19. The upper floor 31 is supported on the lower floor 29 via a slide means 32, for example, a cart with casters, and is slidable two-dimensionally with respect to the lower floor 29. The upper floor 31 is the central frame 19
Floor 3 of the central frame 17 on the same floor extending horizontally toward
4 and the floor 31 above it is connected to the central frame 1
A pin joint 35 is provided on the 7 side via a pin joint 33, and a pin joint 35 is also provided at a portion between the central frame 17 and the outer frame 19. That is, even if a vertical relative displacement occurs between the center frame 17 side and the outer frame 19 side due to an earthquake or the like, for example, the floor 31 is fixed to the pin joint 3.
It breaks at the portions 3 and 35 to absorb the bending stress.

The operation of this embodiment will be described below. When the structure 15 is shaken in the horizontal direction due to an earthquake or the like, the central frame 17 and the outer frame 19, which are independently independent, have different shapes and the like, and therefore have different unique vibration periods. Accordingly, a relative displacement in the horizontal direction occurs between the two frames 17, 19, and the fluid damper or
The damping device 21 such as a friction damper expands and contracts to perform a vibration damping action. At this time, as described above, a pair of damping devices 21 are provided at each of the four corners of the central frame 17 along the direction orthogonal to the horizontal plane, and are connected to both frames 17, 19 via the universal type pin joint 23. because it is (FIG. 2) may damp the shaking for any direction in the horizontal direction.

When the structure 15 is a high-rise building, bending deformation occurs as a whole. Even if the bending deformation causes a relative displacement in the vertical direction between the two frames 17 and 19, each floor is not deformed. This displacement can be absorbed by the two pin joints 33 and 35 provided on the floor 31 of the vehicle. That is, when the two pin joints 33 and 35 are bent, the floor 3 is bent.
1 can be prevented from bending deformation. In addition,
As shown, the damping device 21 is a universal type pin joy.
Connected via the socket 23,
The vertical swing of both frames 17, 19 is also suppressed
And the bending deformation of both frames 17, 19 as much as possible
Can be prevented.

As described above, according to this embodiment, both frames
Regarding the relative swaying in any of the horizontal directions 17 and 19 , furthermore, the relative swaying in the vertical direction due to bending deformation.
Vibration suppression can be performed against it . Further, the floors on the same floor of both frames 17, 19 are connected to the slide means 32 and the pin joints 33, 35.
The two buildings that have been used previously (see FIG. 5) can be formed as a continuous single floor in a state where horizontal displacement and bending deformation can be absorbed. The space 10 between 7 and 9 is partitioned for each floor, so that the floor area can be expanded and used effectively.

In the above embodiment, the central frame 1
Although the description has been made assuming that each of the outer frame 7 and the outer frame 19 has a rectangular horizontal cross section, the other embodiments need not necessarily be rectangular. That is, since the outer frame 19 only needs to be positioned so as to surround the center frame 17, the shape of the horizontal cross section of both frames 17, 19 is not particularly limited. For example, the shape may be a circle, a triangle, a polygon such as a pentagon or more, or a more complicated shape.

[0018]

As described above in detail in the embodiments,
According to the vibration damping structure according to claim 1 of the present invention, when the structure shakes in the horizontal direction due to an earthquake or the like, the horizontal structure is provided between the independently independent center frame and the outer frame. Even if relative displacement occurs, there is an outer frame surrounding the center frame, and the upper part of the center frame and the outer frame is
Pin join with a damping device that exerts damping force by expanding and contracting
Are connected to each other via the horizontal axis, so that the relative vibration in all directions on the horizontal plane and the relative
Can be damping the record, Kakyu the bending deformation of both Frames
Can be prevented .

According to the vibration damping structure of the second aspect of the present invention , the structure is shaken in the horizontal direction due to an earthquake or the like.
In each case, the center frame and the outer frame are independent and independent.
Even if there is a horizontal relative displacement between
An outer frame exists in all horizontal directions surrounding the enclosure
So the upper parts of the central frame and the outer frame are interconnected
By arranging a plurality of damping devices in appropriate directions,
Can provide vibration damping action against shaking in all directions
In addition, since the floors of each floor of the central frame and the outer frame are joined together with the slide means and the pin joint, in a state where horizontal displacement and bending deformation can be absorbed,
The floor can be formed as a continuous single floor surface while preventing bending deformation of the floor, and can be used as a floor portion without wasting the space between the central frame and the outer peripheral frame.

[Brief description of the drawings]

FIG. 1 is a schematic overall longitudinal sectional view of a vibration damping structure according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of a main part of FIG.

FIG. 3 is a schematic overall longitudinal sectional view showing a first conventional example.

FIG. 4 is a schematic overall perspective view showing a second conventional example.

FIG. 5 is a schematic overall longitudinal sectional view showing a third conventional example.

[Explanation of symbols]

17 center frame 19 outer frame 21 damping device 25,27 roof 29 lower floor 31 upper floor 32 slide part 23,33,35 pin joint

Claims (2)

(57) [Claims] 1. A structure comprising a central frame independently standing independently and an outer peripheral frame surrounding the central frame, and these are joined to an upper part of the central frame and the outer peripheral frame by a pin joint.
Stretch actuating the relative vibration interconnected via preparative
Damping structure characterized in that a damping device such as a fluid damper or friction damper which attenuates Ri. 2. The structure is composed of a central frame that is independently self-supporting and an outer frame surrounding the central frame, and these are connected to each other on the upper portions of the central frame and the outer frame by interconnecting them. A damping device for damping the relative vibration is provided, and the floor of each floor of the outer frame is slidably supported in the horizontal direction on the outer frame, and the floor of the outer frame is bent to the floor of the same floor of the central frame. A vibration damping structure characterized by being mutually connected via a pin joint that absorbs deformation.