JP2000336971A - Vibration energy absorber for tension structure and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the reduction of deformation in the vertical direction of a structure covering a large space and the damping of vibrations, and to avoid the breaking of an energy absorber due to bending deflection vibrations from the outside. SOLUTION: A spherical support nut 81 screwed to the first tensile material 2 through a spherical-surface contacting section 82 is engaged rotatably with a spherical support 79 installed to the lower section of a core material 5 disposed around the end section of the first tensile material 2, having an opening, the first tensile material 2 is connected rotatably to the core material 5, viscoelastic body sheets 7 and steel plates 6 are laminated alternately on the side face of the core material 5 in single layers or double layers, and the periphery of the steel plate on the outside is fixed by an external steel plate 10 as a constraining material. A cover 12 enclosing the side face of the first tensile material 2 is fixed at one end section of the external steel plate 10, a spring 11 is inserted between the core material 5 and the cover 12, the second tensile material 13 is fixed at the other end section of the external steel plate 10, and the first tensile material 2 is connected to the second tensile material 13 in a viscoelastic manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration energy absorbing device for a tension member which gives a damping effect to an external force such as seismic force or wind force in a building or other structures.

[0002]

2. Description of the Related Art Examples of this type of prior art include those shown in FIGS. 6, 7, 23 and 24, for example. In the example shown in FIG. 6, a spring 33 is provided between two opposed first and second cover bodies 31, 32 each having a shaft 35 inserted into a center hole.
And a viscoelastic body 34 is inserted between its side surfaces to apply a vibration energy absorbing device (PCT) under the action of compressive force.
International Publication WO 97/21046) is shown. FIG.
Is a viscoelastic brace for a high-rise building in which a viscoelastic sheet and a steel plate are pressure-bonded in a stacked manner without a spring (Japanese Patent No. 2583).
No. 801) is configured as follows. That is, as shown in FIGS. 7A and 7B, a steel center having a through hole 39 for connection is provided at the upper center of the steel beam 37 in the frame 38 of the multi-story building composed of the steel columns 36 and the steel beams 37. The mounting plate 40 is fixed by welding, and a connecting through hole 41 is provided in an upper corner between the lower surface of the end of the steel beam 37 and the steel column 36.
The corner plate 42 made of steel having a shape is fixed by welding, and the connecting plate 44 of the vibration suppressing bracing member 43 and the base end of the inner bracing component 45 are attached to the center mounting plate 40 and the corner mounting plate 42. It is abutted and fixed by bolts 46.

[0003] The vibration suppressing bracing member 43 has webs of a pair of channel steels 47 extending in the longitudinal direction of the bracing arranged in parallel at intervals, and a strip steel plate 48 is applied to the outer surface of the flange of each channel steel 47. The steel connecting plate 44 having the connecting through-hole 50 and the steel spacer 51 are interposed between the base ends of the webs in the respective channel steels 47 and fixed by the bolts 49 and fixed by the bolts 52. ,
A steel outer bracing component 53 is configured.

A connecting through hole 54 is provided at the base end of an inner bracing component 45 made of a strip-shaped steel plate extending in the longitudinal direction of the brace, and a portion of the inner bracing component 45 except for the base end is: Holding hole 5 in outer brace component 53
5 and the entire peripheral surface of a portion of the inner bracing component 45 disposed in the holding hole 55 and the holding hole 5
A viscoelastic material 56 is interposed between the inner brace component 5 and the inner peripheral surface of the inner brace component 45 and is integrally fixed. Gap 57
Is provided.

FIG. 7 (c) is a modification of FIGS. 1 (a) and 1 (b), in which a viscoelastic material 56 is coated on the outside of the inner bracing member 45 and a cement hardening material 58 is coated on the outside thereof. An example in which the tube body 60 is filled and the outside thereof is fitted with a tube body 60 is shown. In the example shown in FIG. 23, a clamp 99 is fixedly provided on the cable in the middle of the cable length, while a damper made of viscoelastic rubber 100 is provided at a position below the clamp of the bridge girder, and a gap between the damper and the clamp is provided. Are provided between a cable C and a bridge girder G in a cable-stayed bridge characterized in that they are connected by a wire rope 101 (JP-A-10-37127).

In the example shown in FIG. 24, a split clamp 102 is fixed to a cable C with tightening bolts 103, while a cylindrical member 107, a lid 108, and a spring housed in the cylindrical member 107 are placed on the bridge girder G. Receiving cylinder 109, spring 11
0, one end is fixed to the center of the bottom of the cylindrical body 109, and the other end is connected to a connecting rod 106 provided through the lid 108 and a damper 112 made of a viscous fluid injected into the cylindrical member 107. The orifice 111 is opened in the bottom plate of the cylindrical body 109, and a minute gap g is provided between the outer peripheral wall of the cylindrical body 109 and the inner wall of the cylindrical member 107. Wire rope 1 between the tightening bolt 103 and the connecting rod 106
04 shows a vibration damping device (JP-A-5-59703) provided between a cable C and a bridge girder G in a cable-stayed bridge characterized in that an ice price 105 is formed at the upper end of a wire rope 104. ing.

[0007]

In a structure covering a large space, such as a stadium facility or an industrial facility, there is a possibility that vertical vibrations exert a great influence on the structure due to an earthquake, wind, or the like. At this time, since the vibration characteristics involve deformation with large amplitude at the center of the span, these vibrations cannot be controlled by the conventional support type energy absorbing device that controls horizontal or vertical vibration at the column support point. was there. In order to solve this, the center part of the roof of the structure and the fixed surface such as the floor are joined with a tension material with initial tension,
It is most effective to install a damping device during this time. However, there has been a problem that the conventional vertical energy absorbing device cannot transmit the tensile force.

For example, an apparatus shown in FIG. 6 (PCT International Publication WO97 / 2104)
When a tensile force is applied to 6), each spring 33
Since the viscoelastic body 34 cannot withstand the shearing force, it cannot transmit the tensile force. Also, there is no function to absorb bending deformation vibration, and it is not possible to sufficiently cope with it. In addition, the viscoelastic braces for high-rise buildings (Patent No. 2583801) have a problem that the deformation is advanced with respect to a static load such as the initial tension, and the tension cannot be maintained. Also, for example, in the vibration damping device shown in FIG. 23 (Japanese Patent Application Laid-Open No. 10-37127), when tension is generated in the wire rope 101, the viscoelastic rubber 100 cannot maintain the tension, and is deformed by this tension. Furthermore, this vibration control device has a problem that it cannot cope with bending deformation vibration outside the cable / bridge girder plane.

Further, a vibration damping device shown in FIG.
No. 9703) uses a viscous fluid, so there is a possibility that liquid leakage may occur when the damper 112 is replaced and used, and in such a case, there is a problem that the surroundings must be contaminated or the liquid must be replenished. . Further, the vibration of the cable usually accompanies not only the axial deformation vibration that pushes and pulls the connecting lever of the damper but also the bending deformation vibration. Even if the wire rope is vertical, the wire rope starts to vibrate in the horizontal direction due to wind force or the like. When bending deformation vibration acts on the connecting lever, a mechanism for absorbing the vibration is not provided, and if the vibration is large, there is also a problem that the damper may collapse.

The present invention can reduce the vertical deformation of a structure covering a large space, such as a stadium facility or an industrial facility, and can rapidly attenuate the vibration. It is an object of the present invention to provide a maintenance-free device that can smoothly absorb energy without giving any noise. In addition, the present invention provides an apparatus, an initial tension introducing method, and a construction method for retaining an initial tension introduced beforehand until mounting.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has the following construction.

In the vibration energy absorbing device for a tension structure according to the present invention, a core is provided with a gap around an end portion of a first tension member, and a rotation mechanism is attached to the core using the first tension member. The viscoelastic body sheet fixed to the side surface of the core material and the outer steel plate around the core material are fixed directly or in a single layer or a plurality of layers through the steel plate. A lid that surrounds the side surface of the first tension member with a gap is fixed to an end, and a spring is inserted between the core material and the lid with a gap around the first tension member. The other end of the outer steel plate is connected to the fixing portion directly or via a second tension member. Further, the rotating mechanism of the vibration energy absorbing device for a tension structure includes the first member provided below the core member.
A ball seat provided with a gap around the end of the tension member, and a ball seat nut screwed to an end of the first tension member on a lower surface of the ball seat and engaged via a spherical contact portion It is composed of A ball seat provided at a lower portion of the core material, and a ball screwed to the first tension member inserted through the ball seat with a gap, and engaged with a lower surface of the ball seat via a spherical contact portion. It consists of a seat nut. Further, the lid is fixed to the outer steel plate by welding or is fixed to the lid and the outer steel plate via a fixing screw inserted into a screw insertion portion formed in the outer steel plate, and is introduced into the first tension member on the upper surface of the lid. Provided so that the initial tension can be maintained. Further, a steel rod may be used for the first tension member and / or the second tension member. Further, a box-shaped section steel material is used as the core material, and a flat plate parallel to each side surface of the core material is used as the outer steel plate. Further, the core member is formed of a circular steel pipe or a steel plate bent in an arc shape. Further, the core material is formed by connecting an inner steel pipe provided with a gap around an outer periphery of the first tension member and an outer steel pipe provided outside the inner steel pipe with a connecting steel plate. Can be. In addition, a first tension member axial force is applied to the end of the ball seat nut screwed to the first tension member in a direction opposite to the initial tension holding nut, and is inserted between the core member and the lid. The initial tension is introduced into the first tension member by tightening the ball seat nut to the ball seat in a state where the spring is subjected to compression deformation by a spring compression force, and the spring is carried into the installation location from a manufacturing plant. After assembling the tension member, the nut may be opened by opening the nut for holding the initial tension.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated examples. Fig. 1 shows (a), (b), (c),
(D) and (e) are views showing an application example of the vibration energy absorbing device 4 for a tension structure in the present invention. In each figure, the first tension member 2 and the second
A tension member 3 is led out, or a first tension member 2 is led out from one end of the energy absorbing device 4, and ends of the first and second tension members 2 and 3 or the energy The absorption device is directly fixed to a structure 1 covering a large space, such as a stadium facility or an industrial facility, in the arrangement shown in the figure.
In FIG. 1, (a) is horizontal vibration, (b) is vertical vibration,
(C) is a diagram showing an example of application to vertical vibration of a cylindrical roof, (d) is horizontal vibration of a steel tower, and (e) is an application example to vertical vibration of a stadium stand roof.

[0014]

First Embodiment A first embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

In the vibration energy absorbing device 4 for a tension structure according to the first embodiment, a core member 5 is disposed around an end of the first tension member 2 shown in FIG.
And the steel plates 6 fixed by the steel plate stoppers 9 are alternately laminated and fixed to form the vibration energy absorbing portion 8, and FIG.
As shown in (b), (c), and (d) as three modified examples cut along the line AA in FIG. A lid 12 surrounding the side surface of the first tension member 2 is fixed to one end of the outer steel plate 10, and a dish-shaped lid is provided between the core 5 and the lid 12. A plurality of springs 11 are inserted, and the second tension member 3 is fixed to the other end of the outer steel plate 10 by a connecting member 13.

As shown in FIG. 2A, the core member 5 has a cylindrical hole 83 into which the first tension member 2 is inserted.
And a core member 5 with a predetermined gap S therebetween, a ball seat 79 is fixed to the lower end of the core member 5, and a ball seat nut 81 is screwed into a screw 80 engraved at the tip of the first tension member 2. Screwed and the spherical contact portion 82 of the ball seat 79 and the ball seat nut 81 as the center of rotation,
The upper portion of the first tension member 2 is rotatably locked in a lateral direction by a predetermined θ angle via the gap S and the gap between each member above the first tension member 2 and the first tension member 2. Fig. 2 (b),
(C) As shown in (d), it is a curved or flat steel piece conforming to the shape of the core material 5 and the outer steel plate 10, and the outer peripheral surface of the core material 5 and the inner peripheral surface of the steel plate 6 To form the vibration energy absorbing portion 8. The steel plate 6 is fixed to the outer steel plate 10 by a steel plate stopper 9 attached to the outer steel plate 10 and a connecting member 13. The steel plate stopper 9 is provided to fix the steel plate 6 and also has a role of fixing the position of the spring 11 in the outer steel plate 10.

The core member 5 has the first tension member 2 rotatably locked thereto, and is elastically connected to the outer steel plate 10 by a spring 11. The second tension member 3 is fixed to the outer steel plate 10 by the connecting member 13, whereby the vibration energy transmitted from the first tension member 2 or the second tension member 3 is input to the vibration energy absorbing device 4 for a tension structure. It is possible. Predetermined gaps S1 and S2 are formed in a portion where the first tension member 2 passes through the spring 11 and a portion where the first tension member 2 passes through the lid 12.

The cross-sectional shapes of the core material 5 and the outer steel plate 10 can be designed and implemented in various shapes according to the purpose, installation location, and other conditions. In addition, the viscoelastic sheet 7 and the steel plate 6 can be designed and implemented with various cross-sectional shapes accompanying the core material 5 and the outer steel plate 10. here,
FIG. 2 (b) shows that the core 5 is rectangular and the outer steel plate 10 is circular.
FIG. 2C shows an example in which both the core member 5 and the outer steel plate 10 have a rectangular cross-section, and FIG. By using a steel rod as the first tension member 2 and / or the second tension member 3, vibration energy can be more effectively absorbed. First tension member 2 and / or second tension member
When vibration energy due to a tensile force from a structure is input to the tension member 3, the spring 11 elastically vibrates, and the viscoelastic sheet 7 laminated and fixed to the outer peripheral surface of the core member 5 and the inner peripheral surface of the steel plate 6 is laminated. Acts so as to absorb vibration energy from the core material 5 and / or the steel plate 6 by shear deformation. Thereby, the vibration of the first tension member 2 and the second tension member 3 is rapidly attenuated, and an excellent vibration damping effect can be exhibited.

As described above, the vibration of the first tension member 2 usually involves not only axial deformation vibration for pushing and pulling the first tension member 2 but also bending deformation vibration. Even if the first tension member 2 is vertical, the first tension member 2 starts to vibrate in the horizontal direction due to an external force such as wind force, and bending deformation vibration acts on the first tension member 2. In response to the bending deformation vibration, the first tension member 2 includes a ball seat 79 and a ball seat nut 81.
And the spherical contact portion 82 as a rotation center portion by sliding,
Since it can rotate in the horizontal direction through the upper gaps S, S1, S2, no lateral vibration is transmitted to the built-in spring 11 and the viscoelastic sheet 7 side, only axial deformation vibration is transmitted, and vibration energy is absorbed. Destruction due to excessive load on the device 4 is avoided.

[0020]

Second Embodiment A second embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The vibration energy absorbing device 4 is characterized in that the first additional steel plate 14 is fixed to the steel plate 6 by the first additional steel plate fixing member 19, and the second additional steel plate 15 is fixed to the core 5 by the second additional steel plate fixing member 18. The viscoelastic sheet 7 is pressed against the outer peripheral surface of the core material 5 and the inner peripheral surface of the first additional steel sheet 14, and the first additional viscoelastic sheet 16 is bonded to the outer peripheral surface of the first additional steel sheet 14 and the second additional steel sheet 15. The second additional viscoelastic sheet 1 is pressed on the inner peripheral surface.
7 differs from the vibration energy absorbing device 4 for tension structure of the first embodiment shown in FIG. 2 in that the outer peripheral surface of the second additional steel plate 15 and the inner peripheral surface of the steel plate 6 are pressed. That is, the vibration energy absorbing section 8 of FIG.
In FIG. 3, the vibration energy absorbing portion 8 includes a pair of the viscoelastic sheet 7 and the first additional steel plate 14, and the first additional viscoelastic sheet 16 and the second additional sheet. A set of steel plates 15, a second additional viscoelastic sheet 17 and a steel plate 6
And a three-layer structure.

Such a structure is not limited to three layers,
The additional steel sheet and the additional viscoelastic sheet may be combined to further increase the number of layers. Steel plate 6 is the connecting material 1
3 and a steel plate stopper 9. Further, the core member 5, the second additional steel plate fixing member 18, and the second additional steel plate 15 are elastically connected to the outer steel plate 10, which is a restraining member, by a spring 11. In this way, the additional steel sheet and the additional viscoelastic sheet are laminated, and the tension that can absorb the vibration energy due to the shear deformation of the viscoelastic sheets provided in parallel against the vibration caused by the tension in the direction of the arrow. A structural vibration energy absorbing device 4 can be formed,
The damping effect can be obtained more effectively than in the first embodiment. Further, the connection structure between the first tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81, and the first
The function of absorbing the bending deformation vibration of the tension member 2 is the same as that of the first embodiment.

[0023]

Third Embodiment A third embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The initial tension introduced into the first tension member 2 is held on the upper surface of the lid 12 which is fixed to one end of the outer steel plate 10 as a restraining member, surrounding the side surface of the first tension member 2. 2 is different from the vibration energy absorbing device 4 for tension structure of the first embodiment shown in FIG. 2 in that an initial tension holding nut 20 is provided. Initial tension holding nut 20
Is fixed to the first tension member 2 with a screw or the like at the position of the upper surface of the lid 12, and by adjusting this, the initial tension is introduced into the first tension member 2, and the initial displacement is given to the spring 11. Structure 1
Until it is attached to the device, it can be in a self-balancing state.

Therefore, after attaching the vibration energy absorbing device 4 for tension structure into which the initial tension is introduced to the structure 1,
By releasing the initial tension holding nut 20, it is possible to automatically introduce a predetermined initial tension. Thereby, the initial shear deformation of the viscoelastic sheet 7 can be suppressed as compared with the case where the initial tension is introduced after being attached to the structure 1, and the first tension member 2 and / or the second tension member 3 can be suppressed. Thus, the deformation performance of the viscoelastic sheet can be used more effectively with respect to vibrations. Also, the first tension member 2
The connection structure of the ball 5 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the action of absorbing the bending deformation vibration of the first tension member 2 by this are the same as in the first and second embodiments.

[0026]

Fourth Embodiment A fourth embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The outer steel plate 1 surrounding the side surface of the first tension member 2
0 on the upper surface of the lid 12 fixed to one end of the
The difference from the vibration energy absorbing device 4 for tension structure of the second embodiment shown in FIG. 3 in that an initial tension holding nut 20 that can hold the initial tension introduced into the tension member 2 is provided. Similarly to the third embodiment, the initial tension holding nut 20 is fixed to the first tension member 2 with a screw or the like at a position on the upper surface of the lid 12 and adjusted to adjust the initial tension to the first tension member 2. The self-balancing state can be maintained until the spring 11 is installed and attached to the structure 1 with the initial displacement applied to the spring 11.

Therefore, after attaching the vibration energy absorbing device 4 for tension structure into which the initial tension is introduced to the structure 1,
By releasing the initial tension holding nut 20, it is possible to automatically introduce a predetermined initial tension. Thereby, the initial shear deformation of the viscoelastic sheet 7, the first additional viscoelastic sheet 16 and the second additional viscoelastic sheet 17 is suppressed as compared with the case where the initial tension is introduced after the attachment to the structure 1. Thus, the deformation performance of the viscoelastic sheet can be used more effectively against vibration from the first tension member 2 and / or the second tension member 3. Also, the first
The connecting structure of the tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the function of absorbing the bending deformation vibration of the first tension member 2 by this are the same as those of the first to third embodiments.

[0029]

Fifth Embodiment A fifth embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The vibration energy absorbing device 4 for a tension structure according to the fifth embodiment includes a core member 5 at the end of the first tension member 2 shown in FIG.
And a viscoelastic body sheet 7 and an outer steel plate 10 are alternately laminated and fixed to the side surface of the core material 5 to form a vibration energy absorbing portion 8. FIGS. 8 (c) and 8 (d) show FIGS. (B) A-
As shown as two modified examples cut along the line A, the outer steel plate 10, which is a restraining member having a rectangular or circular cross section, is connected with a stiffener 62, and the outer steel plate 10 is connected to one end of the outer steel plate 10. A cover 12 surrounding the side surface of the tension member 2 is fixed, a spring 11 is inserted between the core member 5 and the cover 12, and the second tension member 3 is fixed to the other end of the outer steel plate 10. . As shown in FIGS. 8 (c) and 8 (d), the outer steel plate 10 is a curved or flat steel piece conforming to the shape of the core material 5, and the outer peripheral surface of the core material 5 and the inner peripheral surface of the outer steel plate 10 are viscoelastic. The vibration energy absorbing portion 8 is formed by bonding the body sheet 7 by pressing. The core member 5 is fixed to the first tension member 2 and is elastically connected to the outer steel plate 10 by a spring 11. The second tension member 3 is fixed to the outer steel plate 10, thereby enabling input of vibration energy transmitted from the first tension member 2 or the second tension member 3 to the vibration energy absorbing device 4 for a tension structure.

The cross-sectional shapes of the core member 5 and the outer steel plate 10 can be designed and implemented in various shapes depending on conditions such as the purpose and installation location. Also, the viscoelastic sheet 7 can be implemented in various cross-sectional shapes accompanying the core material 5 and the outer steel plate 10. By using a steel rod as the first tension member 2 or the second tension member 3, the axial rigidity of the first tension member 2 or the second tension member 3 is increased, and vibration energy can be more effectively absorbed. The vibration energy absorbing device 4 for tension structure is provided on the upper surface of the lid 12 as shown in FIG.
An initial tension holding nut 20 for holding the initial tension introduced into the first tension member 2 may be provided.

When vibration energy due to a tensile force from a structure is input to the first tension member 2 and / or the second tension member 3, the spring 11 elastically vibrates, and the outer peripheral surface of the core member 5 and the outer steel plate 10 The viscoelastic sheet 7 laminated and fixed on the inner peripheral surface of the first member acts to absorb vibration energy from the core material 5 and / or the outer steel plate 10 by shear deformation.
Thereby, the vibration of the first tension member 2 and the second tension member 3 is rapidly attenuated, and an excellent vibration damping effect can be exhibited. The ball seat 79 and the ball nut 8 of the first tension member 2 and the core member 5
1 and the effect of absorbing the bending deformation vibration of the first tension member 2 by this are the same as those of the first to fourth embodiments.

[0033]

Sixth Embodiment A sixth embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The vibration energy absorbing device 4 for a tension structure according to the sixth embodiment is shown in FIG. 8 in that the shear stud 63 is attached to the side surface of the outer steel plate 10 as the restraining member shown in FIG. It is different from the vibration energy absorbing device 4 for tension structure of the fifth embodiment. By embedding the vibration energy absorbing device 4 for tension structure in the fixing portion, the shear stud 63 acts so as to directly transmit the axial force of the outer steel plate 10 to the fixing portion by shear resistance. This makes it possible to make the vibration energy absorbing device for tension structure 4 invisible from the outside, which is effective in architectural design. Further, the connection structure between the first tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the function of absorbing the bending deformation vibration of the first tension member 2 by this are the same as in the first to fifth embodiments. is there.

[0035]

Seventh Embodiment A seventh embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The vibration energy absorbing device 4 for a tension structure according to the seventh embodiment includes an outer steel plate 10 as a restraining member shown in FIG.
8 is different from the vibration energy absorbing device 4 for a tension structure of the fifth embodiment shown in FIG. By inserting the vibration energy absorbing device 4 for tension structure into the fixing position and fixing the bracket to the fixing portion, the bracket 64
Acts to directly transmit the axial force to the fixing portion by the shear resistance force. This makes the vibration energy absorbing device 4 for tension structure less visible from the outside, which is effective in architectural design, and is effective when the embedded length of the shear stud 63 shown in FIG. 9 of the sixth embodiment cannot be secured. Can be used for Further, the connection structure between the first tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the effect of absorbing the bending deformation vibration of the first tension member 2 by the first to sixth are as follows.
This is the same as the embodiment.

[0037]

Eighth Embodiment An eighth embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The vibration energy absorbing section 8 shown in FIG.
The additional steel sheet 14 is fixed to the outer steel sheet 10 and the second additional steel sheet 1
5 is fixed to the core material 5, the viscoelastic body sheet 7 is pressed against the outer peripheral surface of the core material 5 and the inner peripheral surface of the first additional steel plate 14, and the first additional viscoelastic body sheet 16 is attached to the outer periphery of the first additional steel plate 14. Face and second
FIG. 8 shows that the second additional viscoelastic sheet 17 is press-bonded on the inner peripheral surface of the additional steel plate 15 and the inner peripheral surface of the outer steel plate 10 serving as a restraining member. It is different from the vibration energy absorbing device 4 for tension structure of the fifth embodiment. That is, the vibration energy absorbing section 8 in FIG. 8 has a single-layer structure of the viscoelastic sheet 7 and the outer steel plate 10, whereas the vibration energy absorbing section 8 shown in FIG. And a first additional steel sheet 14, a first additional viscoelastic sheet 16 and a second additional steel sheet 15, and a second additional viscoelastic sheet 17 and an outer steel sheet 10. Such a structure may be provided not only in three layers but also in an additional layer by combining an additional steel sheet and an additional viscoelastic sheet. Further, it may be directly fixed to the fixing portion using the shear stud 63 or the bracket 64 shown in the sixth embodiment of FIG. 9 and the seventh embodiment of FIG.

With the structure in which the additional steel sheet and the additional viscoelastic sheet are laminated in this way, the vibration energy is absorbed by the shear deformation of the viscoelastic sheets provided in parallel to the vibration caused by the tension in the direction of the arrow. Thus, the vibration energy absorbing device 4 for tension structure can be formed, and the damping effect can be obtained more effectively than in the fifth embodiment. Further, the connection structure between the first tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the function of absorbing the bending deformation vibration of the first tension member 2 by this are the same as those of the first to seventh embodiments. is there.

[0040]

Ninth Embodiment A ninth embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIG.

The point that the core member 5 of FIG. 12 is fixed to the end of the first tension member 2 toward the side surrounding the elastic spring 11 is the vibration energy absorbing device 4 for tension structure of the fifth embodiment shown in FIG. Is different from Further, it may be directly fixed to the fixing portion using the shear stud 63 or the bracket 64 shown in the sixth embodiment of FIG. 9 and the seventh embodiment of FIG. Further, as shown in FIG. 13, the vibration energy absorbing device 4 for a tension structure may be fixed to a fixing portion using a fixing hardware 65. As shown in FIG. 14, the vibration energy absorbing portion 8 is provided for the purpose of further exhibiting the vibration energy absorbing effect.
Can be formed into a plurality of layers, and further, as shown in FIG. 15, the core material 5 can be extended to expand the vibration energy absorbing portion 8 formed of a single layer or a plurality of layers.

By fixing the core member 5 to the first tension member 2 toward the elastic spring 11, the vibration energy absorbing device 8 can be formed on the outer side surface of the elastic spring 11. It is possible to shorten the overall length of the absorber 4. Accordingly, when the space for installing the vibration energy absorbing device 4 for tension structure is narrow, it can be effectively used. Further, the connection structure between the first tension member 2 and the core member 5 by the ball seat 79 and the ball seat nut 81 and the effect of absorbing the bending deformation vibration of the first tension member 2 by the first to the eighth are as follows.
This is the same as the embodiment.

[0043]

Tenth Embodiment FIG. 1 shows a tenth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention.
6, and will be described with reference to FIGS.

The method of applying the vibration energy absorbing device 4 for tension structure according to the tenth embodiment is as follows. First, as an example of the initial tension introducing method, as shown in FIG. First tension member axial force 6 in the direction opposite to tension member 3
6 acts, the spring 11 inserted between the core 5 and the lid 12 generates a compression deformation 68 by a spring compression force 67, and FIG.
As shown in FIG. 6 (b), one end of the outer steel plate 10 which is a restraining material is fixed to the lid 12, and the nut for initial tension holding 20 is tightened to the lid 12 as shown in FIG. Is done.

After the first tension member axial force 66 is applied, the outer steel plate 10 is fixed to the lid 12 and the initial tension holding nut 20 is tightened to obtain the vibration energy for the tension structure as shown in FIG. Since the initial tension equivalent to the first tension member axial force 66 can be introduced into the absorbing device 4 and balanced with the spring compressive force 67, and the viscoelastic body sheet 7 hardly undergoes shear deformation due to the initial tension, an external input is required. It is possible to effectively absorb the vibration energy.

The vibration energy absorbing device 4 for a tension structure according to the present invention is transported from a manufacturing factory to a place where it is installed on a structure 1 covering a large space such as a stadium facility or an industrial facility, and is constructed in the following procedure, for example. Is performed. (1) In FIG. 17A, the vibration energy absorbing device 4 for tension structure carried into the installation location is supported by a temporary fixing jig 72 installed on the fixing unit 71.
17B, the anchor bolt 7 is supported by being embedded in the fixing portion 71. In FIG.
3 is supported by fixing to the fixing unit 71, and FIG.
7 (d), the fixing hardware 65 and the fixing portion 71 are supported by fixing them with anchor bolts 73. At this time, the vibration energy absorbing device 4 for the tension structure to which the initial tension has been introduced.
The first tension member 2 and the second tension member 3 have pin blocks 7
0 and the coupler 69 are attached. (2) According to FIG. 18A, the first tension member 2 to which the open socket 74 is attached is suspended from the structure 1. (3) As shown in FIG. 18 (b), the temporary tensioning jig 75 is installed, the first tension member 2 is pulled downward by the oil jack 76 attached thereto, and the initial tension holding nut 20, the ball nut By operating 81, the same initial tension as that of the vibration energy absorbing device for tension structure 4 is introduced into the first tension member 2. (4) From FIG. 18 (c), the pin block 70 is rotated by rotating the coupler 69 in a state where tension is introduced into the first tension member 2.
Is adjusted up and down, and connected with the open socket 74 and the pin 77. (5) From FIG. 18 (d), the tension of the oil jack 76 is removed, and after confirming that the initial tension holding nut 20 has risen, the temporary load jig 75 is removed, and the initial tension holding nut 75 is removed. 20 is moved to the coupler 69 side. (6) As shown in FIG. 18 (e), waterproof work 78 such as a waterproof cover is performed around the vibration energy absorbing device 4 for tension structure. According to this construction method, the vibration energy absorbing device 4 for a tension structure can be effectively installed on the structure 1.

[0047]

Eleventh Embodiment An eleventh embodiment of the vibration energy absorbing device for a tension structure according to the present invention will be described with reference to FIGS.

In the vibration energy absorbing device 4 for tension structure according to the eleventh embodiment, a predetermined gap S is provided at the end of the first tension member 2 to which the tie rod 88 as the upper tension member is connected by the coupler 69 in FIG. The inner steel pipe 84
An outer steel pipe 85 having a rectangular cross section is disposed outside the inner steel pipe 84, and the outer surface of the inner steel pipe 84 and the four inner corners of the outer steel pipe 85 are connected by welding 87 with four connecting steel plates 86. Heartwood 5
A ball seat 79 concentric with the inner steel pipe 84 and having a spherical concave portion on the lower surface is welded to the lower end of the connecting steel plate 86, and the ball seat nut 81 screwed to the screw 80 at the end of the first tension member 2 is formed. The spherical convex portion is slidably pressed against the spherical concave portion to form a spherical contact portion 82, and the viscoelastic sheet 7 is fixed to four side surfaces of the rectangular outer steel pipe 85 to form the vibration energy absorber 8. As shown in FIG. 20A cut along the line CC in FIG. 19, four outer steel plates 10 are disposed on four side surfaces of the outer steel pipe 85 as restraining members, and the viscoelastic sheet 7 is A rectangular outer steel plate 10 which is fixed and which is formed by welding the corners of the outer steel plate 10 using an angle material 89 is provided, a spring seat 90 is provided at an upper end of the connecting steel plate 86, and an upper end of the outer steel plate 10 is provided. A rectangular lid 12 is fitted so as to be able to move up and down, and a coil-shaped spring 11 is inserted between the spring seat 90 and the lid 12. 12, the bolt holes 92 provided in the end face of the lid 12 are aligned with the bolt insertion holes 93 provided in the outer steel plate 10, and a high-strength bolt 98 is screwed through each hole, and the initial tension holding nut 20 is removed. To conclude.
In the vibration energy absorbing device 4 for tension structure of FIG. 19, the outer steel plate 10 and the mounting bracket 94 to the fixing portion (not shown) are integrally formed or welded to the outer steel plate 10, and the outer steel plate 10 A bottom cover 95 is bolted to the lower end of the cover. Also, the spring seat 90 of the first tension member 2
A predetermined gap S3, S1, S2 is formed in the insertion part with the spring 11, the insertion part with the spring 11, and the insertion part with the lid 12.

In the eleventh embodiment, when vibration energy due to a tensile force from a structure is input to the first tension member 2, the spring 11 elastically vibrates, and the outer peripheral surface of the outer steel pipe 85 and the restraint member. The viscoelastic body sheet 7 fixed to the inner peripheral surface of the outer steel plate 10 acts to absorb vibration energy from the outer steel pipe 85 and / or the outer steel plate 10 by shear deformation. Thereby, the vibration of the first tension member 2 is rapidly attenuated, and an excellent vibration damping effect can be exhibited.

The vibration of the first tension member 2 usually involves not only axial deformation vibration for pushing and pulling the first tension member 2 but also bending deformation vibration.
Is vertical, the first tension member 2 starts to vibrate in the horizontal direction due to an external force such as wind force, and bending deformation vibration acts on the first tension member 2 (the vibration energy absorbing device 4). In response to the bending deformation vibration, the first tension member 2 uses the spherical contact portion 82 of the ball seat 79 and the ball seat nut 81 as a rotation center portion by sliding, and passes through the upper gaps S, S1, S2, and S3. Therefore, the lateral vibration is not transmitted to the built-in spring 11 and the viscoelastic body sheet 7 side, and only the axial deformation vibration is transmitted to the vibration energy absorbing device 4.

[0051]

Twelfth Embodiment A twelfth embodiment, which is a method for installing a vibration energy absorbing device for a tension structure according to the present invention, is shown in FIG.
This will be described with reference to FIG. The vibration energy absorbing device 4 for a tension structure shown in FIGS. 19 and 20 is carried from a manufacturing factory to a place where a structure 1 covering a large space such as a stadium facility or an industrial facility is installed, and is constructed in the following procedure, for example. Is performed.

The vibration energy absorbing device 4 for a tension structure according to the eleventh embodiment is carried from a manufacturing factory to a place where it is installed on a structure 1 covering a large space such as a stadium facility or an industrial facility. The construction is carried out. (1) In FIG. 21A, the vibration energy absorbing device 4 for tension structure carried into the installation location is provided with the receiving beam 96 and the high-strength bolt 97, and then the vibration energy absorbing device 4 is suspended from below. It is fixed to the receiving beam 96 with a high-strength bolt 97. (2), FIG. 21 (b) shows that the upper tie rod 88 suspended from the roof and the lower first tension member 2 are coupled to the coupler 6
Join at 9. (3) As shown in FIG. 21 (c), the temporary load jig 75 is attached to the receiving beam 96, and the ball seat 79 is held down by the oil jack 76 attached to the temporary load jig 75.
The front end of the first tension member 2 is pulled downward while fixing so as not to move downward. At this time, the lid 12 fixed to the initial tension holding nut 20 moves downward from FIG.
The bolt holes 92 shown in FIG. 9 and the bolt insertion holes 93 match, and a high-strength bolt 98 is inserted into each hole, and the ball nut 81 is tightened. In order to set the distance until the bolt hole 92 and the bolt insertion hole 93 match from the initial tension to be introduced in advance and the spring constant of the spring 11, the bolt hole 92 and the bolt insertion hole 9 are set.
When 3 matches, the spring 11 is compressed and deformed, and a predetermined initial tension is introduced into the first tension member 2. (4) From FIG. 22 (a), the tension of the oil jack 76 is removed, and after confirming that the initial tension holding nut 20 has risen, the temporary load jig 75 is removed and the initial tension holding nut 75 is removed. 20 is moved to the coupler 69 side. When the initial tension holding nut 20 is in close contact with the lid 12,
The operation of (3) is repeated. (5) As shown in FIG. 22 (b), waterproof work 78 such as a waterproof cover is performed around the vibration energy absorbing device 4 for tension structure. With this construction method, the vibration energy absorbing device 4 for a tension structure can be effectively installed on the structure 1.

[0053]

According to the present invention, a core is provided with a gap around the end of the first tension member, and the first tension member is engaged with the core through a rotating mechanism. A viscoelastic sheet is fixed to a side surface of the core material, and the viscoelastic sheet and an outer steel plate which is a constraining member around the viscoelastic sheet are fixed directly or through a steel plate in one of a single layer and a multiple layer, A lid surrounding the side surface of the first tension member with a gap is fixed to one end of the outer steel plate, and a gap is provided between the core member and the lid around the first tension member. By inserting a spring and connecting the other end of the outer steel plate to the fixing portion directly or via a second tension member, vibration energy due to the tensile force is reduced by the first tension member and / or the second tension member. When the vibration is input into the . As a result, vertical deformation of a structure covering a large space such as a stadium facility or an industrial facility can be reduced, and the vibration can be rapidly attenuated. Also,
The vibration energy absorbing portion including the core material, the steel plate, and the viscoelastic body sheet can be configured by pressing the viscoelastic body sheet between the outer peripheral surface of the core material and the inner peripheral surface of the steel plate. Further, the vibration of the first tension member usually involves not only the axial deformation vibration for pushing and pulling the first tension member but also the bending deformation vibration. In the present invention, the vibration is transmitted from outside the energy absorbing device. This bending deformation vibration is absorbed by the rotating mechanism at the connection between the first tension member and the core member, so that the energy absorbing device can be prevented from being broken and smooth energy absorption can be realized. There is.

The vibration energy absorbing device for a tension structure of the present invention has such a configuration. In the case of the prior art, the tension force cannot be maintained at a portion where a constant tension force acts, The present invention solves the problems that deformation occurs, does not work effectively as an energy absorbing device under the action of tensile force, and that the mounting of a sheet-like viscoelastic body could only be performed by insertion and could not be crimped. Is a maintenance-free vibration energy absorber for tension structures, which solves the problem of liquid leakage and liquid replenishment in vibration damping devices using viscous fluids, and attaches a pre-installed initial tension using an initial tension holding nut. This is a new invention in that it has a mechanism for holding until time, and that a high initial tension can be introduced thereby.

[Brief description of the drawings]

1 is a schematic view showing an application example of a vibration energy absorbing device for a tension structure according to the present invention, wherein (a) is a horizontal vibration, (b) is a vertical vibration, (c) is a horizontal vibration of a cylindrical roof,
(D) is a diagram showing an example of application to horizontal vibration of a steel tower, and (E) is an application to vertical vibration of a stadium stand roof.

FIG. 2 is a view showing a first embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein (A) is a longitudinal sectional view, and (B) is an AA sectional view (A) of FIG. The core 5 is rectangular, and the outer steel plate 10 is circular).
Another example of the A sectional view (the core material 5 and the outer steel plate 10 are also rectangular), (d) is the AA sectional view (the core material 5 and the outer steel plate 1)
0 is a circle).

FIG. 3 is a view showing a second embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein (A) is a longitudinal sectional view, and (B) is a BB sectional view of FIG. The core 5 is rectangular, and the outer steel plate 10 is circular).
Another example of a B sectional view (both core material 5 and outer steel plate 10 are rectangular),
(D) is another example of the BB cross-sectional view (the core 5 and the outer steel plate 10 are also circular).

FIG. 4 is a view showing a third embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein (A) is a longitudinal sectional view, and (B) is a CC sectional view of FIG. The core 5 is rectangular, and the outer steel plate 10 is circular).
Another example of the C cross-sectional view (the core material 5 and the outer steel plate 10 are also rectangular), (d) is the same CC cross-sectional view (the core material 5 and the outer steel plate 1).
0 is a circle).

FIG. 5 is a view showing a fourth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein (A) is a longitudinal sectional view, and (B) is a DD sectional view of FIG. The core 5 is rectangular, and the outer steel plate 10 is circular).
Another example of the D sectional view (both core material 5 and outer steel plate 10 are rectangular),
(D) is another example of the DD sectional view (the core 5 and the outer steel plate 10 are also circular).

FIG. 6 is a view showing a conventional technique, and is a partial longitudinal sectional side view of a vibration energy absorbing device.

FIG. 7 is a view showing a conventional technique, wherein (a) is a conceptual diagram of a vibration suppressing device for a building, (b) is a cross-sectional view, and (c) is a partial cross-section of a modified example of (b). is there.

8A and 8B are diagrams showing a fifth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 8A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

9A and 9B are diagrams showing a sixth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 9A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

10A and 10B are diagrams showing a seventh embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 10A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

11A and 11B are diagrams showing an eighth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 11A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

12A and 12B are diagrams showing a ninth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 12A is an example of a longitudinal sectional view, and FIG. (C) is an example of the AA cross-sectional view of FIGS. (A) and (b), and (d) is the same (a) and (b) of the same. 7 is another example of the AA cross-sectional view of FIG.

13A and 13B are diagrams showing a ninth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 13A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

14A and 14B are diagrams showing a ninth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 14A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

15A and 15B are diagrams showing a ninth embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein FIG. 15A is an example of a longitudinal sectional view, and FIG. (C) is an example of an AA cross-sectional view of FIGS. (A) and (b), and (d) is another example of the longitudinal cross-sectional view to which the nut 20 is added. 7 is another example of the AA cross-sectional view of FIG.

FIG. 16 is a view showing a tenth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention,
(A) is an example of a longitudinal sectional view in the process of introducing initial tension,
(B) is another example of the longitudinal sectional view in the initial tension introducing process, and (c) is another example of the longitudinal sectional view in the initial tension introducing process.

FIG. 17 is a view showing a tenth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention,
(A) is an example of a side view of the fixing situation, (B) is another example of a side view of the fixing situation, (C) is another example of a side view of the fixing situation, and (D) is a diagram of the fixing situation. It is another example of a side view.

FIG. 18 is a view showing a tenth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention,
(A) is an example of a side view in the construction process, (B) is another example of a side view in the construction process, (C) is another example of a side view in the construction process, and (D) is a side surface in the construction process (E) is another example of the side view in the construction process.

FIG. 19 is a sectional view of an eleventh embodiment of the vibration energy absorbing device for a tension structure according to the present invention.

20 is a view showing an eleventh embodiment of the vibration energy absorbing device for a tension structure according to the present invention, wherein (a) is a sectional view taken along line AA of FIG. 19, (b) is a sectional view taken along line BB of FIG.
(C) is a sectional view taken along the line CC.

FIG. 21 is a view showing a twelfth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention,
(A) is an example of a side view of the fixing situation, (B) is another example of a side view of the fixing situation, (C) is another example of a side view of the fixing situation, and (D) is a diagram of the fixing situation. It is another example of a side view.

FIG. 22 is a view showing a twelfth embodiment of a method for installing a vibration energy absorbing device for a tension structure according to the present invention,
(A) shows another example of the fixing state, and (B) shows another example of the fixing state.

FIG. 23 is a view showing a conventional technique, and is a partial longitudinal sectional side view of a vibration damping device.

FIG. 24 is a view showing a conventional technique, and is a partial longitudinal sectional side view of a vibration damping device.

[Explanation of symbols]

Reference Signs List 1 Structure covering large space such as stadium facilities, industrial facilities, etc. 2 First tension member 3 Second tension member 4 Vibration energy absorbing device for tension structure 5 Core material 6 Steel plate 7 Viscoelastic sheet 8 Vibration energy absorption unit 9 Steel plate stopper DESCRIPTION OF SYMBOLS 10 Outside steel plate 11 Spring 12 Lid 13 Connecting material 14 1st additional steel plate 15 2nd additional steel plate 16 1st additional viscoelastic body sheet 17 2nd additional viscoelastic body sheet 18 2nd additional steel plate fixing material 19 1st additional steel plate fixing material Reference Signs List 20 nut for maintaining initial tension 31 first cover body 32 second cover body 33 spring 34 viscoelastic material 35 axis 36 steel column 37 steel beam 38 frame 39 connection through hole 40 steel center mounting plate 41 connection through hole 42 steel Corner mounting plate 43 Vibration suppression bracing 44 Connecting plate 45 Inner bracing component 46 Bolt 47 Channel steel 48 Strip steel plate 49 Bolt 50 For connection Through-hole 51 Steel spacer 52 Bolt 53 Steel outer bracing component 54 Connecting through-hole 55 Holding hole 56 Viscoelastic material layer 57 Allowable expansion and contraction 58 Cement-based hardening material 60 Tubular body 62 Stiffener 63 Shear stud 64 Bracket 65 Fixing hardware 66 First tension member axial force 67 Spring compressive force 68 Compressive deformation 69 Coupler 70 Pin block 71 Fixing part 72 Temporary fixing jig 73 Anchor bolt 74 Open socket 75 Temporary applying jig 76 Oil jack 77 Pin 78 Waterproofing work 79 Ball seat 80 Screw 81 Ball seat nut 82 Spherical contact part 83 Cylindrical hole 84 Inner steel pipe 85 Outer steel pipe 86 Connecting steel pipe 87 Welding 88 Tie rod 89 Angle material 90 Spring seat 92 Bolt hole 93 Bolt insertion hole 94 Mounting bracket 95 Bottom cover 96 Receiving Beam 97 High strength bolt 98 High strength bolt 99 Clamp 100 Viscoelastic Rubber 101 Wire Rope 102 Clamp 103 Bolt 104 Wire Rope 105 Ice Price 106 Connecting Rod 107 Cylindrical Member 108 Lid 109 Cylindrical Body 110 Spring 111 Orifice 112 Damper 113 Ball Bearing Holder S Gap S1 Gap S2 Gap S3 Gap

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F16F 15/04 F16F 15/04 A (72) Inventor Hiroshi Nakamura 2-6-3 Otemachi, Chiyoda-ku, Tokyo F-term in Nippon Steel Corporation (reference) 2D059 GG05 GG13 2E001 DG01 DG02 FA03 FA16 FA26 FA30 FA71 GA24 GA42 HB02 HF16 KA03 LA01 3J048 AA02 AD14 BC05 BD08 EA38 3J066 AA01 AA26 BA10 BB01 BD10

Claims (8)

[Claims] 1. A core member is provided with a gap around an end of a first tension member, and the first tension member is engaged with the core member via a rotation mechanism, and a side surface of the core member is provided. The viscoelastic sheet and the outer steel plate around the viscoelastic material sheet are fixed either directly or through a steel plate in a single layer or multiple layers, and the side surface of the first tension member is attached to one end of the outer steel plate. Is fixed with a gap, a spring is inserted between the core material and the lid with a gap around the first tension member, and the other end of the outer steel plate is A vibration energy absorbing device for a tension structure connected to the fixing unit directly or via a second tension member. 2. A ball seat provided at a lower portion of the core with a gap around an end of the first tension member, and an end of the first tension member on a lower surface of the ball seat. 2. The vibration energy absorbing device for a tension structure according to claim 1, further comprising a ball seat nut screwed to said portion and engaged through a spherical contact portion. 3. The lid is fixed to the outer steel plate by welding, or is fixed to the lid and the outer steel plate via a fixing screw inserted into a screw insertion portion formed in the outer steel plate. The vibration energy absorbing device for a tension structure according to claim 1 or 2, further comprising an initial tension holding nut capable of holding the initial tension introduced into the nut. 4. The vibration energy absorbing device for a tension structure according to claim 1, wherein a steel rod is used as the first tension member and / or the second tension member. 5. The vibration energy absorbing device for a tension structure according to claim 1, wherein a box-shaped steel material having a box-shaped cross section is used as the core material, and a flat plate parallel to each side surface of the core material is used as the outer steel plate. . 6. The core material is made of a circular steel pipe or a steel sheet bent in an arc shape.
5. The vibration energy absorbing device for a tension structure according to any one of 4. 7. An inner steel pipe provided with a gap around the outer periphery of the first tension member, and an outer steel pipe provided outside the inner steel pipe is connected by a connecting steel plate. The vibration energy absorbing device for a tension structure according to any one of claims 1 to 6, wherein the device is configured. 8. A first tension member axial force is applied to an end of the ball nut, which is screwed to the first tension member, in a direction opposite to the initial tension holding nut fastened to the lid, so that the core member and the core member are connected to each other. An initial tension is introduced into the first tension member by tightening the ball seat nut to the ball seat in a state where the spring inserted between the lid and the spring undergoes compression deformation due to a spring compressive force, and a manufacturing factory And then, after assembling each tension member, releasing the initial tension holding nut.
The construction method of the vibration energy absorbing device for a tension structure according to any one of the above.