JPH11247486A - Damping structure for structures - Google Patents

Abstract

(57) [Summary] [Objective] An object of the present invention is to provide a structure with excellent seismic and wind resistance at a low cost by effectively damping the structure with a simple structure. The present invention consumes kinetic energy of vertical displacement between two or more structures 1 in parallel due to bending deformation of the two or more structures due to a horizontal external force. A damper member 2 is provided, and a connecting member 3 for connecting the two or more structures to each other so as to be vertically movable relative to each other is provided.

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 for attenuating vibration of a structure such as a building or a bridge due to a horizontal external force applied by an earthquake, wind or the like.

[0002]

2. Description of the Related Art Various structures including super-high-rise buildings, structures such as main towers of long bridges and piers of bridges are deformed by horizontal external forces such as earthquakes and winds. Then, energy is stored in the inside, and the next deformation is caused by the internal energy, so that an attempt is made to maintain the balance. As a result, the structure vibrates while undergoing bending deformation and shearing deformation when subjected to a horizontal external force. At this time,
Bending stress and shear stress are generated in the cross section of the structure,
Bending stress is greatest at the end of the cross section, while shear stress is greatest at the neutral axis of the cross section.

Therefore, if the internal energy due to the shear stress generated in the above structure can be consumed before the next deformation occurs, the deformation of the structure can be reduced and the seismic performance of the structure can be improved. In addition, since the internal energy due to bending stress can be reduced due to the overall decrease in the internal energy, the structure can be made more flexible.

Conventionally, as a vibration damping structure for reducing the internal energy as described above, for example, the condensed papers of the 4th Symposium on “Motion and Vibration Control” of the Japan Society of Mechanical Engineers [No.95-28], page 255 ~ Page 258, "Bending and torsional vibration control of parallel structures" published by Yukihito Matsumoto et al. Is known, and this vibration damping structure is a linear linear actuation between two parallel buildings of different thickness. Connecting those buildings with an actuator (linear motor) interposed,
The interaction between the buildings and the operation of the linear actuator are intended to suppress the vibration of the buildings.

Conventionally, as a vibration damping structure for reducing the internal energy as described above, for example, pages 130 to 131 of "Building Technology", October 1996, supervised by the Building Research Institute of the Ministry of Construction.
It is also known that there is a very mild steel damping wall, which Hayashi announced on the page, "Early yielding and absorbing seismic energy." By connecting, the internal energy due to the horizontal shear stress between the stories is consumed by the horizontal shear deformation of the extremely mild steel damping wall, thereby suppressing the vibration of the building.

However, the former vibration damping structure has a disadvantage in that the installation and control of the linear actuator requires a great deal of cost. In the latter vibration damping structure, the whole structure is damped when the whole structure is damped. Since the damping wall must be provided between the floors, there is also a disadvantage that the installation requires a great deal of cost.

Therefore, the present invention disposes a member having a high damping property of shear energy at or near a neutral axis of a cross section of a structure so as to consume internal energy due to a vertical (vertical) shear stress. It is an object to provide a vibration damping structure having a simple structure and excellent vibration damping performance.

[0008]

In order to solve the above-mentioned problems, a vibration damping structure for a structure according to the present invention is provided between two or more parallel structures. Characterized in that a damper member that consumes kinetic energy of vertical displacement between the two or more structures due to bending deformation of the two or more structures due to external force in the direction is provided. A normal piston type oil damper may be used, but as described in claim 2, a member that consumes kinetic energy by shearing due to vertical displacement between the structures may be used. As described above, a member that consumes kinetic energy by sliding with respect to at least one of the structures due to a vertical displacement between the structures may be used.

In the vibration damping structure according to the present invention, the damper member disposed between the two or more structures arranged side by side is capable of preventing the two or more structures from being deformed due to a horizontal external force. This consumes the kinetic energy of vertical displacement between those structures, thereby consuming the internal energy stored in said structures due to external horizontal forces. Moreover, in the vibration damping structure of the present invention, the number of the damper members may be one or more.
It acts on the overall displacement of the structure in the height direction and exerts an energy consuming function on the entire structure.

Therefore, according to the vibration damping structure of the present invention, two or more parallel structures can be effectively damped with a simple configuration, and a structure excellent in earthquake resistance and wind resistance can be manufactured at low cost. Can be provided.

In the damper member according to the second aspect, the kinetic energy of the vertical displacement between the structures is consumed by being sheared by the displacement and converted into thermal energy. In the damper member described in 3, the kinetic energy of the vertical displacement between the structures is consumed by sliding into at least one of the structures by the displacement and converting the kinetic energy into thermal energy.

Therefore, according to these damper members,
The configuration of the vibration damping structure can be made simpler.

In the vibration damping structure according to the present invention, a connecting member may be provided for connecting the two or more structures so as to be vertically movable relative to each other. If the member is provided, the deformation of the structures in the separating direction is prevented by the connecting member, so that the shear deformation and sliding of the damper member can be surely brought about.

The upper part of the two or more structures is attracted to each other by the connecting member to give the structures an initial elastic bending deformation in a direction approaching each other.
The shearing and sliding of the damper member can be more reliably brought about, and the internal energy due to the initial elastic bending deformation resists the external force in the horizontal direction, so that the accumulation of the internal energy itself due to the external force can be reduced. .

The above structure is applied to two or more parallel structures, while the structure can be applied to one structure. Between two or more struts supporting one structure in parallel, the kinetic energy of vertical displacement between those struts due to the bending deformation of the two or more struts due to horizontal external force It is characterized by arranging a damper member to be consumed, and the damper member here may be a normal piston type oil damper, but as described in claim 6, shearing due to vertical displacement between the columns. The member may be a member that consumes kinetic energy by being deformed, and slides on at least one of the columns due to a vertical displacement between the columns as described in claim 7. It may be a member to consume.

In the vibration damping structure according to the present invention, the damper member disposed between two or more columns supporting one structure in parallel is provided with the two or more dampers due to a horizontal external force. Consumes the kinetic energy of vertical displacement between the columns due to the bending deformation of the columns, thereby consuming the internal energy stored in the columns due to the external force in the horizontal direction. Moreover, in the vibration damping structure of the present invention, one or a plurality of damper members may be used, but each of the damper members acts on the displacement of the entire column in the height direction, and has an energy consumption function for the entire structure. Demonstrate.

Therefore, according to the vibration damping structure of the present invention, two or more struts supporting one structure in parallel can be effectively damped with a simple configuration, and excellent in earthquake resistance and wind resistance. Can be provided at a low cost and as a single structure.

According to the damper member of the present invention, the kinetic energy of the vertical displacement between the columns is consumed by being sheared by the displacement and converted into thermal energy. In the damper member described above, the kinetic energy of vertical displacement between the columns is consumed by sliding into at least one of the columns and converting it into thermal energy due to the positional displacement.

Therefore, according to these damper members,
The configuration of the vibration damping structure can be made simpler.

In the vibration damping structure of the present invention, a connecting member may be provided for connecting the two or more columns so as to be relatively movable in the vertical direction. Since the deformation in the separating direction is prevented by the connecting member, shear deformation and sliding of the damper member can be surely brought about.

If the two or more columns are attracted to each other by the connecting member and the columns are given initial elastic bending deformation in a direction approaching each other, the shear deformation and sliding of the damper member can be more reliably performed. In addition, since the internal energy due to the initial elastic bending deformation resists the external force in the horizontal direction, the accumulation of the internal energy due to the external force can be reduced.

[0022]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view schematically showing one embodiment of the structure vibration damping structure of the present invention applied to two buildings as two or more parallel structures. The damping structure is
The damper member 2 is disposed between the upper ends of the side surfaces of the two buildings 1 arranged side by side, and the both sides of the buildings 1 are buried at the upper ends of the side surfaces of the buildings 1, respectively. The connection member 3 is connected so as to be relatively movable in the vertical direction.

The damper member 2 here may be an ordinary piston type oil damper, but is preferably
For example, rubber containing lead, polymer, and mild steel (for example, trade name “SLY100” sold by Sumitomo Metal Industries, Ltd.)
A member that converts kinetic energy into heat energy by internal loss caused by shear deformation, such as extremely low yield point steel), or slides against a side surface of the building 1 such as a normal steel plate. Kinetic energy is converted into heat energy by friction with the side surface and consumed.
In general, lead-containing rubber and polymers convert kinetic energy into heat energy by internal loss while elastically shearing, and extreme mild steel converts kinetic energy into thermal energy by internal loss while plastically shearing. Convert.

When the damper member 2 is a member that converts kinetic energy into heat energy and consumes it by internal loss generated by shear deformation, both side surfaces of the damper member 2 are integrated with the side surfaces of the building on both sides. Then, both sides of the damper member 2 are fixed to the sides of the building on both sides by means of sticking, vulcanization bonding, welding, or the like so as to move in the vertical direction. When the damper member 2 is a member that slides on the side surface of the building 1 and converts kinetic energy into heat energy by friction with the side surface and consumes it, at least one side surface of the damper member 2 The damper member 2 is supported at a predetermined position by a suitable support member so as to be in sliding contact with the side surface of the building 1 on the corresponding side, and is pressed against the side surface of the building 1 on which the sliding contact is made.

The connecting member 3 is made of a PC cable, a high-tension cable, or the like, and is a member that is strong against pulling force but low in resistance against bending force. In this embodiment, the building 1 on both sides is connected by the connecting member 3.
The buildings 1 are attracted to each other to give an initial elastic bending deformation in a direction approaching each other.

FIG. 2 is a front view schematically showing another embodiment of the structure vibration damping structure of the present invention applied to two super-high-rise buildings as juxtaposed structures. In the vibration damping structure, a plurality of damper members 2 are arranged at intervals in the vertical direction between the side surfaces of the two super-high-rise buildings 4 arranged side by side, and the side surfaces of the super-high-rise buildings 4 are connected to the side surfaces. Each of the above damper members 2
By the connecting member 3 which joined both ends at the position of
It is connected so as to be vertically movable relative to each other. The damper member 2 and the connecting member 3 here are the same as those in the embodiment shown in FIG.

In the vibration damping structures of the two embodiments, two buildings 1 and a super-high-rise building 4 are arranged side by side.
When an external force is applied in the horizontal direction due to an earthquake, wind, or the like, the degree of deformation of the high-rise building 4 is expanded in FIG. 4 is deformed, and a positional displacement in the vertical direction is generated between them as shown by an arrow in FIG.
The damper member 2 disposed between the high-rise building 4 and the high-rise building 4 consumes the kinetic energy of the vertical displacement between the two buildings 1 and the high-rise building 4, whereby the external force in the horizontal direction is increased. Consumes the internal energy stored in these two buildings 1 and the skyscraper 4. Moreover, in the vibration damping structure of the above embodiment,
Each of the damper members 3 acts on the overall displacement of the building 1 and the super-high-rise building 4 in the height direction, and exerts an energy consumption function on the entire building 1 and the super-high-rise building 4.

Therefore, according to the vibration damping structure of the above embodiment,
It is possible to effectively control the two buildings 1 and the super-high-rise building 4 arranged side by side with a simple configuration, and to provide the building 1 and the super-high-rise building 4 excellent in earthquake resistance and wind resistance at low cost. .

In the above embodiment, the damper member 2 is converted into thermal energy by shearing and deforming the kinetic energy of vertical displacement between structures, such as lead-containing rubber and ultra-mild steel, due to the displacement. And what you consume in
If the kinetic energy of vertical displacement between structures, such as a steel plate, is consumed by converting the kinetic energy into thermal energy by sliding against at least one of the structures due to the displacement, The configuration of the structure can be made simpler.

Further, according to the vibration damping structure of the above embodiment, since the connecting member 3 for connecting the two buildings 1 and the super high-rise buildings 4 so as to be relatively movable in the vertical direction is provided, the building 1 Since deformation of the high-rise buildings 4 in the separating direction is prevented by the connecting members 3, shear deformation and sliding of the damper members 2 can be surely brought about.

Further, according to the vibration damping structure of the above embodiment,
Since the upper parts of the two buildings 1 and the high-rise building 4 are attracted to each other by the connecting member 3 to give them initial elastic bending deformation in a direction approaching each other, the shear deformation and sliding of the damper member 2 are further reduced. In addition to reliably providing the internal energy, the internal energy due to the initial elastic deformation resists the external force in the horizontal direction, so that the accumulation of the internal energy itself due to the external force can be reduced.

FIG. 3 is a front view schematically showing still another embodiment of the structure vibration damping structure of the present invention applied to one main tower of a long bridge as one structure. In the vibration damping structure of this embodiment, the damper members 2 are interposed between the upper end portions and the intermediate portions of the side surfaces of the two columns 6 supporting the main tower 5 in parallel, respectively. The side surfaces are connected to each other so as to be relatively movable in the vertical direction by a connecting member 3 having both ends connected to the respective side surfaces at the positions of the damper members 2. The damper member 2 and the connecting member 3 here are the same as those in the embodiment shown in FIG.

According to the vibration damping structure of this embodiment, the main tower 5 of the long bridge can be effectively damped with a simple configuration, and a long bridge with excellent seismic and wind resistance can be provided at low cost. For example, various effects similar to those of the previous embodiment can be obtained.

FIG. 4A is a front view schematically showing still another embodiment of the structure damping structure of the present invention applied to one super-high-rise building as one structure, and FIG. FIG. 2B is an explanatory view showing an operation of the vibration damping structure of the embodiment, and FIG. 2C is a plan view of the super-high-rise building showing an arrangement of connecting members in the vibration damping structure of the embodiment. FIG. 4D is a cross-sectional view of the super-high-rise building showing the arrangement of the damper members in the vibration damping structure of the embodiment. The super-high-rise building 4 in this embodiment is shown in FIGS. As shown in d), it has four portions 4a, 4b, 4c and 4d adjacent to each other and arranged in a rectangular shape.

When viewed in the vertical direction, the vibration damping structure according to this embodiment has, as shown in FIGS. 4 (a) and 4 (b),
It has a four-post damping part 7 and a two-post damping part 8. The four-post damping part 7 and the two-post damping part 8 are shown in FIGS. 4 (c) and 4 (d) in plan view. As shown, the four-post vibration damper 7 is composed of four parts 4a, 4b,
Located in the center gap where the corners of 4c and 4d gather,
Further, the two-pillar damping part 8 is located at the side end part and the middle part of the gap where the four parts 4a, 4b, 4c and 4d of the skyscraper 4 face each other two by two.

Here, the four-post vibration damper 7 is a perspective view of FIG. 5 (a) and side views of FIGS. 5 (b) and 5 (c) as viewed from the directions of arrows A and B in the perspective view, respectively. As shown in the figure, in the cross-shaped gap between the four columns 6 which are adjacent to each other and are arranged side by side in a rectangular shape and each made of an H-shaped steel material,
A damper member 2 having a cruciform cross section as shown in the perspective view of FIG. 5D is arranged, and the four struts 6 are connected to each other by four brackets 10 having a substantially L-shaped cross section.
And the above-mentioned damper member 2 is sandwiched between the four columns 6, and a portion of the column 6 made of H-shaped steel material to be clamped by the bracket 10 has a flange of the column 6. However, a reinforcing plate 11 is interposed between the flanges so as not to be deformed by tightening.

The damper member 2 here is a member such as a rubber plate containing lead, which consumes by converting the kinetic energy of the vertical displacement between the columns 6 into thermal energy by shearing the kinetic energy due to the displacement. Or a member, such as a steel plate, which consumes the kinetic energy of vertical displacement between the columns 6 by converting the kinetic energy into thermal energy by sliding against at least one of the structures due to the displacement. .

FIG. 6 (a) shows a damper member 2 made of, for example, the above-described lead-containing rubber plate of the four-post vibration damping portion 7 when the above-mentioned column 6 is bent and deformed by an external force in the horizontal direction and is displaced vertically. FIG. 4 is a side view showing the state of FIG. 5. As shown in the figure, the damper member 2 is sheared by the vertical displacement of the column 6, and the internal loss causes the kinetic energy of the vertical displacement of the column 6 to be thermally dissipated. Convert to energy and consume.

FIG. 6B shows the state of the damper member 2 made of, for example, the steel plate of the four-post vibration damper 7 when the above-mentioned column 6 is flexed and deformed by an external force in the horizontal direction and is displaced vertically. As shown in the drawing, the damper member 2 slides on at least one of the opposing columns 6 due to the vertical displacement of the column 6, and the surface of the damper member 2 and the column 5 The kinetic energy of the vertical displacement of the column 6 is converted into heat energy and consumed by friction between the side wall of the support 6 and the support 6.

On the other hand, the two-pillar damping part 8 is different from the side view in FIGS. 7A and 7B viewed from two directions which are horizontal and perpendicular to each other, and the cross-sectional view in FIG. As shown in the figure, a flat damper member 2 is disposed in a gap between two columns 6 each made of an H-shaped steel material, which are arranged side by side with each other, and are connected to each other by bolts 9. The U-shaped bracket 12 makes the two columns 6
Is surrounded and tightened, the damper member 2 is sandwiched between the two columns 6, and the portion of the column 6 made of the H-shaped steel material to be tightened with the bracket 12 is provided with a flange of the column 6. However, a reinforcing plate 11 is interposed between the flanges so as not to be deformed by tightening.

The damper member 2 here is also a member such as a lead-containing rubber plate, which consumes by converting the kinetic energy of the vertical displacement between the columns 6 into thermal energy by shearing the kinetic energy due to the displacement. Alternatively, a member, such as a steel plate, which consumes the kinetic energy of vertical displacement between the columns 6 by converting the kinetic energy into thermal energy by sliding on at least one of the structures due to the displacement.

In the two-post vibration damper 8, the support 6
Is deformed by the external force in the horizontal direction and is displaced in the vertical direction. For example, when the damper member 2 made of the above-described lead-containing rubber plate is used, the damper member 2 is sheared and deformed due to the displacement of the column 6. Due to the internal loss
The kinetic energy of the vertical displacement of the column 6 is converted into heat energy and consumed, and for example, when the damper member 2 made of the steel plate is used, the damper member 2 is used.
Is slid on at least one of the opposing columns 6 due to the displacement of the column 6, and the vertical position of the column 6 is caused by friction between the surface of the damper member 2 and the side surface of the column 6. The kinetic energy of the slip is converted to heat energy and consumed.

FIG. 8A is a perspective view showing another example of the structure of the two-post vibration damper 8 in the vibration damping structure of the above embodiment.
(B) and (c) show the two-post vibration damper 8 in FIG.
8 (a) is a side view as seen from the directions of arrows C and D, and FIG. 8 (d) is a cross-sectional view showing the two-post vibration damping portion 8, and the two-post vibration damping portion of this configuration example. Reference numeral 8 denotes twelve damper members 2 made of a U-shaped ultra-soft steel plate (for example, a plate of an ultra-low yield point steel) on both sides of the two columns 6 standing side by side, and the recesses formed by the two columns. 6, two pieces of each step are arranged horizontally in six steps, and the two ends of the damper member 2 made of extremely mild steel sheet are sandwiched by a plurality of brackets 14 connected to each other by long bolts 13, respectively. Those brackets
14 is fixed to the two columns 6 by means (not shown) such as bolts. Here, a U-groove is cut in each damper member 2 and each bracket 14, and a long bolt 13 to which a number of nuts are attached in advance is fitted therewith, so that each step is connected with a separate bolt. The number of bolts is reduced to facilitate the work of assembling the two-post vibration damper 8.

In such a two-post vibration damper 8, FIG.
9 (a) and 9 (b), when an external force is applied in the horizontal direction due to an earthquake, wind, or the like at the upper part of FIGS. As shown in (1), each of the twelve damper members 2 is plastically deformed, and the kinetic energy of the vertical displacement of the column 6 is converted into heat energy and consumed.

Further, the vibration damping structure of this embodiment is shown in FIG.
As shown in (a) and (c), the top of the skyscraper 4 is located between the parts 4a and 4b, between the parts 4b and 4c, between the parts 4c and 4d, and between the parts 4a and 4d. Each of the connecting members 3 has a connecting member 3 for connecting the parts 4a and 4d so as to be movable relative to each other in the vertical direction. As shown in FIG. Is constituted by a rod made of high-tensile steel, and each end of the connecting member 3 is connected to each of the parts 4a, 4b, 4
linked to the corresponding parts of c and 4d.

As shown in FIG. 10 (b) and FIG. 10 (c), which is a cross-sectional view taken along the line EE, the support portion 15 includes the portions 4a, 4b, 4c and 4c. A receiving member 18 is fixed via a bracket 17 on a beam 16 made of H-shaped steel buried at the upper end of the 4d, and the bracket 17 and the receiving member are fixed.
One end of the connecting member 3 is made to penetrate through the connecting member 3 and a spherical sliding contact with a radius equal to or smaller than the radius of the spherical receiving surface 18a of the receiving member 18 is made on the penetrating end of the connecting member 3. A hook 19 having a surface 19a is inserted therethrough, and a nut 20 is screwed into a screw portion 3a at an end of the connecting member 3 so that the hook 19 is prevented from coming off from the connecting member 3.

The support section 15 is a high-rise building 4
When a vertical displacement occurs between the above-mentioned parts 4a, 4b, 4c and 4d, the spherical sliding contact surface 19a of the hooking material 19
By sliding against the spherical receiving surface 18a of FIG.
As shown by an imaginary line in (b), the connecting member 3 is allowed to swing, whereby the connecting member 3 is moved to the high-rise building 4.
The portions 4a and 4b, the portions 4b and 4c, the portions 4c and 4d, and the portions 4a and 4d are connected so as to be relatively movable in the vertical direction. Here, by tightening the nut 20, as shown in FIG. 10 (d), the connecting members 3 draw the tops of the respective portions 4a, 4b, 4c and 4d of the high-rise building 4 together. Thus, the portions 4a, 4b, 4c, and 4d are given initial elastic bending deformation in a direction approaching each other.

According to the vibration damping structure of the above embodiment, FIG.
As shown in (b), the high-rise building 4 is deflected by a horizontal external force such as an earthquake or wind, and its four parts 4a,
4b, 4c and 4d e.g. between parts 4a, 4d and parts 4b, 4c
When the two columns are displaced in the vertical direction, the four-post vibration damper 7 and the two-post vibration damper 8 consume the kinetic energy of the displacement as described above, so that the super-high-rise building 4 has a simple configuration. Various actions and effects similar to those of the previous embodiment can be provided, such as being able to effectively control the vibration and providing a super-high-rise building with excellent seismic resistance and wind resistance at low cost. Each floor of the super-high-rise building 4 is provided with a connecting floor material (not shown) covering a gap between the parts 4a, 4b, 4c, and 4d so as to be able to move vertically relative to each other. It is provided for

FIG. 11 (a) is a longitudinal sectional view showing a test specimen of a vibration test performed by the present inventor for confirming the operation and effect of the vibration damping structure of the present invention. Above the above, two floor boards (width 20 mm in the direction perpendicular to the paper x length 298 mm x height 40 mm, weight 250 g per sheet) 22 each with rigidity made of aluminum honeycomb structure inside are spaced apart. A leaf spring (width 20 mm in the direction perpendicular to the paper surface × thickness 2 mm ×
Height 520 mm) 23 are erected on the base 21 instead of the columns, and each of the floor plates 22 is supported by two leaf springs 23,
Further, as a damper member between the upper ends of two leaf springs 23 adjacent to each other at the center of the four sheets, an aluminum block provided with an adhesive (specifically, a double-sided tape) on both end surfaces (the paper block). 20mm width x 10mm thickness x 40 height in orthogonal directions
mm) 24, and furthermore, the upper portions of the two leaf springs 23 adjacent to each other (the portion immediately below the floor plate 22) are connected by a wire 25 as a connecting member so as to be relatively movable in the vertical direction. The upper portions of the two leaf springs 23 are pulled together by 25 to give the leaf springs 23 an initial elastic bending deformation in a direction approaching each other. An acceleration sensor 26 is provided on one floor plate 22.

FIG. 12 (a) shows an aluminum block (width 20 mm × thickness 25 mm × height in a direction perpendicular to the paper surface) having an adhesive applied to both ends instead of the aluminum block 24 in the specimen shown in FIG. 40mm), and the upper ends of two leaf springs 23 adjacent to each other at the center of the four leaf springs are rigidly connected to each other with an adhesive.
Two pieces of the test piece of the comparative example in which the displacement in the vertical direction due to the flexural deformation of 23 is prevented from occurring, and the initial elastic flexure in the direction approaching each other is not given to the leaf springs 23. In the figure, the state where the output voltage of the acceleration sensor 26 changes with the passage of time when a horizontal external force is applied to the floor plate 22 is shown in the figure. As is clear from FIG. Of the horizontal vibration was extremely small, and the vibration lasted for a long time.

FIG. 12 (b) shows the test piece shown in FIG. 11, in which the aluminum block 24 is inserted without providing an adhesive on both end surfaces thereof, and the aluminum block 24 and two leaf springs 23 on both sides thereof are provided. While the frictional resistance between them is substantially eliminated, the leaf springs 23 are given an initial elastic bending deformation in the direction approaching each other by the wire 25, and the two floor plates 22 are horizontally moved in the horizontal direction in the figure. It shows the state of change of the output voltage of the acceleration sensor 26 with the passage of time when a strong external force is applied, and as can be seen from the figure, in this case, the attenuation of the horizontal vibration of the floor plate 22 is relatively large. The vibration converged in a relatively short time.

FIG. 12 (c) shows that the frictional resistance between the aluminum block 24 and the two leaf springs 23 on both sides of the aluminum block 24 is increased with an adhesive by using the specimen itself shown in FIG. An acceleration sensor with respect to the passage of time when a horizontal external force is applied to the two floor plates 22 in the figure by giving the plate springs 23 an initial elastic bending deformation in a direction approaching each other with a wire 25. FIG. 26 shows a change state of the output voltage. As is apparent from the figure, in this case, the attenuation of the horizontal vibration of the floor plate 22 was extremely large, and the vibration converged in a very short time.

From these test results, it is understood from the results of the present invention that a damper member is used to provide resistance to the vertical displacement between the structures or the columns thereof, as well as the initial elasticity in the direction approaching the structure or the columns, as in the present invention. It has been confirmed that the structure can be effectively damped if the bending deformation is given. Since the result of the above (c) is considerably larger than the result of the above (b), the damper member only provides resistance to the vertical displacement between the structures or their columns. It has been found that a considerable damping effect can be obtained.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, in the above embodiment, a high-rise building is divided into four parts and a damper member is provided between those parts. Although provided, a damper member may be provided between columns that stand side by side inside a structure such as a high-rise building. Further, the shape of the damper member is not limited to that of the above-described embodiment, and can be appropriately changed. It goes without saying that the vibration damping structure of the present invention can be applied to structures other than the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing one embodiment of a structural vibration damping structure of the present invention applied to two buildings as two or more parallel structures.

FIG. 2 is a front view schematically showing another embodiment of the structural damping structure of the present invention applied to two super-high-rise buildings as juxtaposed structures.

FIG. 3 is a front view schematically showing still another embodiment of the structural vibration damping structure of the present invention applied to one main tower of a long bridge as one structure.

FIG. 4A is a front view schematically showing still another embodiment of the structure damping structure of the present invention applied to one super-high-rise building as one structure, and FIG. )
Is an explanatory view showing the operation of the vibration damping structure of the embodiment, (c) is a plan view of the super-high-rise building showing the arrangement of connecting members in the vibration damping structure of the embodiment, and (d) is It is a cross-sectional view of the said high-rise building which shows arrangement | positioning of the damper member in the damping structure of the example.

FIG. 5A is a perspective view showing a four-post damping unit in the embodiment, and FIGS. 5B and 5C are arrows in the perspective view of FIG. FIG. 4 is a side view as seen from the directions of arrow A and arrow B, respectively, and FIG. 4D is a perspective view showing a damper member used for the four-pillar damping unit.

FIG. 6A is a side view showing a state of the four-post damping unit when the damper member is sheared, and FIG. 6B is a side view showing the four-post damping unit when the damper member slides. It is a side view which shows the state of a vibration part.

7 (a) and 7 (b) are side views showing the two-post vibration damper in the above embodiment viewed from two directions which are horizontal and perpendicular to each other, and FIG. 7 (c) is a view of the two-post vibration damper. FIG.

FIG. 8A is a perspective view showing another example of the configuration of the two-pillar damping unit in the embodiment, and FIGS.
(D) is a side view of the four-pillar damping unit viewed from the directions of arrows C and D in the perspective view of (a).
It is a cross-sectional view of the four-pillar damping part.

FIGS. 9A and 9B are side views showing a state in which the damper member of the two-pillar damping unit shown in FIG. 8 is sheared and deformed by external forces in two directions different from each other.

10 (a) is an enlarged explanatory view showing an installation state of the connecting member on the top of the high-rise building in the embodiment shown in FIG. 4, and FIG. 10 (b) is a support for connecting the connecting member to the top of the high-rise building. FIG. 3C is a cross-sectional view of the supporting portion, taken along line EE of FIG. 3B, and FIG.
FIG. 4 is a side view showing a state in which the connecting member gives initial elastic deformation to each part of the high-rise building.

FIG. 11A is a longitudinal sectional view showing a test piece of a vibration test performed by the present inventor for confirming the operation and effect of the vibration damping structure of the present invention, and FIG. 11B is a plate of the test piece; It is a cross-sectional view showing a spring.

FIG. 12 (a) is a vibration test result of a comparative example in which the test piece is deformed, (b) is a vibration test result when the adhesive is removed from the test piece, and (c) is a result of the vibration test. FIG. 9 is a relationship diagram showing a vibration test result when both the pressure-sensitive adhesive and the initial elastic bending deformation are applied to a test sample.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Damper member 3 Connecting member 4 High-rise building 5 Main tower 6 Prop

Claims (8)

[Claims] 1. A vertical displacement movement between two or more structures (1) caused by bending of the two or more structures due to a horizontal external force. A damping structure for a structure, comprising a damper member (2) that consumes energy. 2. The structure according to claim 1, wherein the damper member is a member that consumes kinetic energy by shearing due to a vertical displacement between the structures. Swing structure. 3. The damper member (2) is a member that consumes kinetic energy by sliding against at least one of the structures due to a vertical displacement between the structures. The structure for damping a structure according to claim 1. 4. The structure according to claim 1, further comprising a connecting member (3) for connecting the two or more structures so as to be relatively movable in a vertical direction. Damping structure for goods. 5. Between two or more columns (6) supporting one structure in parallel, a vertical direction between the columns due to bending deformation of the two or more columns due to a horizontal external force. A damping member (2) that consumes the kinetic energy of the positional deviation is disposed. 6. The vibration damper for a structure according to claim 5, wherein said damper member (2) is a member that consumes kinetic energy by shearing deformation due to a vertical displacement between said columns. Construction. 7. The damper member (2) is a member that consumes kinetic energy by sliding against at least one of the columns due to a vertical displacement between the columns. 6. The vibration damping structure for a structure according to 5. 8. The structure according to claim 5, further comprising a connecting member (3) for connecting the two or more columns so as to be relatively movable in a vertical direction. For vibration control structure.