JP2001032882A - Damping damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently display specified damper performance by securing large buckling strength and flexural strength while reducing cost by lightening and reducing assembly mandays. SOLUTION: This device is furnished with a plural number of first steel plates 1 arranged in parallel with each other with intervals between them, a second steel plate 2 arranged in parallel with them at an intermediate position between the adjacent first steel plates 1, 1 and viscoelastic bodies 3, 3 interposed between opposed surfaces of the first steel plates 1 and the second steel plate 2, and the first steel plates 1 and spacers 4, 4 cross-sections of which are solid and rectangular interposed between opposed surfaces of both ends in the cross direction of them are constituted in a box shape by integrally connecting them by fastening bolts 5 and nuts 6 passing through solid parts of the spacers 4, 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for absorbing the vibration energy of a building such as a building when wind or seismic force acts on the building to attenuate the shaking motion and vibration of the building.
The present invention relates to a vibration damper that is used by being incorporated as a brace or a brace in a structural frame of an existing or newly-built building.

[0002]

2. Description of the Related Art As a vibration damper of this type, a viscoelastic body capable of stably absorbing the energy of displacement (amplitude) over a wide range from a minute displacement to a large displacement by shear deformation is used as a vibration energy. Conventionally, a vibration damper device used for an absorber has been proposed.

[0003] A conventionally proposed damping device, which is assembled and used as a brace capable of exhibiting the most effective damping function (damper function), is generally shown in FIG. It has a simple cross-sectional shape. That is, a steel plate 21 that can be joined to one of the opposing portions of the structural skeleton composed of columns and beams and a steel plate 22 that can be joined to the other opposing portion of the structural skeleton are arranged in parallel with a space therebetween. And these two steel plates 2
The viscoelastic body 23 is bonded and interposed between the opposing surfaces 1 and 22.

[0004]

In the conventional damping device for a brace having the above-mentioned cross-sectional shape, in order to sufficiently exhibit a predetermined damper performance, the entire device must be used under actual use conditions. In addition to the shape-retaining strength that the cross-sectional shape of the steel plate does not deform, a strength (second moment of area) that does not cause the steel plate 21 or 22 to buckle or bend in the longitudinal direction is required. In order to secure such strength, in the conventional apparatus, a means for increasing the thickness of the steel plate 21 or 22 is adopted. However, according to this, not only the entire apparatus becomes heavy, but also the workability is poor. In addition, there has been a problem that all handling work costs, such as during assembling and transportation, are increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a large buckling strength and a large bending strength while maintaining a predetermined damper performance while reducing the weight and the number of assembly steps to reduce the cost. It is an object of the present invention to provide a vibration damper device capable of sufficiently exhibiting vibration.

[0006]

In order to achieve the above object, a vibration damper device according to the present invention is capable of being joined to one of opposing portions of a structural skeleton and is arranged in parallel at a distance from each other. And at least two first band-shaped rigid plate members, which can be joined to the other of the opposing portions of the structural frame, and are located at an intermediate position between the at least two first band-shaped rigid plate members in parallel with the rigid plate members. At least one second placed
A vibration damper device comprising: a band-shaped rigid plate; and a viscoelastic body interposed between the first band-shaped rigid plate and the second band-shaped rigid plate, wherein at least two first rigid plates are provided. A spacer having a solid rectangular cross section is interposed between the opposing surfaces at both ends in the width direction. The two first rigid plate members are joined to each other by tightening bolts and nuts penetrating the solid portions of the spacers. Are integrally joined.

According to the present invention having the above-described structure, of the first and second belt-shaped rigid plate members for interposing the viscoelastic body capable of stably absorbing the energy of displacement (amplitude) over a wide range, At least two first band-shaped rigid plate members arranged in parallel at a distance from each other are provided with a spacer having a rectangular cross section at both ends in the width direction thereof and a bolt and a nut penetrating a solid portion of the spacer. Since it has a box-shaped cross-section by being integrally joined by tightening, each of the band-shaped rigid plate members is made of thin material to reduce the weight of the entire device while maintaining the shape retention strength, buckling strength and longitudinal bending strength. As a result, no extra compressive force is applied to the viscoelastic body during both assembly and actual use.
It is possible to secure the viscoelastic body to the predetermined thickness and avoid the adverse effect on the deformation characteristics due to the change in the rigidity, thereby making full use of the deformation characteristics of the viscoelastic body during actual use. And excellent damper performance.

In addition, a spacer having a solid rectangular cross section is used as a spacer for integrally connecting at least two first band-shaped rigid plate members to each other. There is no constraint that the thickness of the viscoelastic body is uniquely determined by the standard dimensions of the spacer, compared to the case where the spacer is used. The dimensions and the thickness of the viscoelastic body can be arbitrarily set. That is, the degree of freedom in design is increased, and the applicable range of the vibration damper device can be expanded. In addition, by tightening bolts that penetrate the solid portion of the spacer with a solid rectangular cross section, they are integrally connected, thereby reducing the number of assembling steps as compared with a case where a spacer having a U-shaped cross section such as a standard channel material is used. Thus, the manufacturing cost of the entire apparatus can be reduced.

In particular, in the vibration damper device having the above configuration, the first band-shaped rigid plate member and the spacer having a solid rectangular cross section are provided at a plurality of points in the longitudinal direction thereof. In the case where the welding configuration is adopted, it is possible to easily obtain a vibration damper device that ensures the predetermined damper performance by ensuring the positioning between the first band-shaped rigid plate member and the spacer during assembly.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a model structural view showing an outline of a vibration damper device according to the present invention. As is apparent from FIG. 1, a vibration damper device A according to the present invention is used for a structure comprising columns and beams in a building. Two first steel plates (examples of first band-shaped rigid plate) 1, 1 which can be joined to one of the opposing portions of a skeleton (described later) and are arranged in parallel at a distance from each other; The first steel plate 1 can be joined to the other of the opposing portions of the structural skeleton having a slightly smaller width dimension than the plates 1, 1, and at an intermediate position between the two first steel plates 1, 1. , 1 and a second steel plate (an example of a second strip-shaped rigid plate) 2, both surfaces of the second steel plate 2, and opposing surfaces of the first steel plates 1, 1 Between each other, and are continuous with each other at both ends in the board width direction. And a viscoelastic body 3,3 that.

A spacer 4, 4 having a solid rectangular cross section is provided at one longitudinal end of each of the two steel plates 1, 1 between opposing surfaces at both ends in the width direction of the two first steel plates 1, 1. The solid portions and the steel plates of the spacers 4, 4 are interposed over the entire length excluding the joints to the structural frame to be formed, at a plurality of locations spaced at regular intervals in the longitudinal direction of the steel plates 1, 1. By fastening a plurality of bolts 5, 5 ... and nuts 6, 6 ... penetrating the plates 1, 1, the two steel plates 1, 1 are integrally joined to form a box-shaped cross section.

FIGS. 2 to 4 are a side view, a plan view and a vertical sectional front view of a brace type vibration damper device A constructed so as to be practicable using the model shown in FIG. 1 as a basic structure. The vibration damper device A has three first steel plates 1 arranged in parallel with each other, and one end in the longitudinal direction of the first steel plate 1 is provided with a steel column 7 and a steel beam 8 as shown in FIG. One of the gusset plates 10... Fixed to the four corners of the structural frame 9 is formed with a joint portion 11 that can be bolted, and an intermediate position between the three first steel plate plates 1. Has a second
The steel plates 2, 2 are arranged in parallel with the first steel plates 1,... At one longitudinal end thereof on the side opposite to the side where the joints 11 of the first steel plates 1 exist. A joining portion 12 capable of being bolted to another one of the gusset plates 10 in the framework 9 is formed.

The spacers 4, 4,... Having a solid rectangular cross section are provided between the opposing surfaces of the first steel plates 1, 1 adjacent to each other at both ends in the width direction of the three first steel plates.
Are interposed over the entire length excluding the joint portion 11 to the structural skeleton 9 formed at one longitudinal end of each of the steel plate plates 1..., And are disposed at a plurality of locations spaced at regular intervals in the longitudinal direction of each of the steel plate plates 1. , The three steel plates 1 are joined together by tightening a plurality of bolts 5, 5 and nuts 6, 6 that penetrate the solid portions of the spacers 4, 4 and the steel plates 1. It has a box shape with a double cross section.

[0014] Between both surfaces of the two second steel plates 2 and 2 and opposing surfaces of the first steel plates 1 and 1 sandwiching the second steel plates 2 and 2, respectively. The viscoelastic bodies 3, 3... Are interposed at both ends in the plate width direction in a state of being continuous with each other, three first steel plate 1, four layers of viscoelastic bodies 3, and two second A brace type vibration damper A having a structure in which the steel plates 2 and 2 are stacked in the thickness direction is configured.

As shown in FIG. 5, the vibration damper device A configured as described above has the joints 11 at both ends in the longitudinal direction.
The bolts 12 are respectively bolted to the gusset plates 10, 10 located in the diagonal direction of the structural skeleton 9, so that the gusset plates 10 are used as braces for seismic reinforcement of the structural skeleton 9. In such a usage mode, when a wind or seismic force acts on the steel columns 7 and the steel beams 8 of the structural frame 9 to cause a displacement, the displacement energy is absorbed by the viscoelastic bodies 3, 3,. Therefore, the shaking motion and vibration of the building are attenuated.

Here, the first steel plates 1 are connected to each other by spacers 4 having a solid rectangular cross section at both ends in the width direction thereof and bolts 5 penetrating through the solid portions of the spacers 4. 5 and the nuts 6, 6 are integrally joined to form a box-shaped cross-section, so that the first steel plate 1 and the second steel plate 2, 2 are made of thin materials to suppress vibration. While reducing the weight of the entire damper device A, the shape retention strength, the buckling strength, and the bending strength in the longitudinal direction can be increased, and the viscoelastic bodies 3, 3,... By applying a compressive force, it is possible to secure the viscoelastic bodies 3, 3... To a predetermined thickness, and to avoid an adverse effect on deformation characteristics due to a change in the rigidity of the viscoelastic bodies 3, 3,. Fully utilize the inherent deformation characteristics of It is possible to exhibit an excellent damper performance by.

The first steel plate 1 and the spacers 4, 4 having a solid rectangular cross section are provided at a plurality of locations in the longitudinal direction, specifically, bolts 5, 5 and nuts 6, 6.
It is desirable to perform spot welding 13 at each intermediate position of the fastening location by. This is to ensure the positioning of the first steel plate 1 and the spacers 4, 4 at the time of assembly, and to prevent the viscoelastic bodies 3, 3,. This is to suppress the characteristic change due to the erosion and always ensure the predetermined damper performance.

Although the brace type vibration damper A has been described in the above embodiment, the same damper function as described above can be exhibited when used as a brace.

[0019]

As described above, according to the present invention, at least two first band-shaped rigid plate members are integrally connected to each other at both ends in the width direction by tightening a spacer and bolts and nuts penetrating the spacer. Since the configuration is a box-shaped cross section, the first and second band-shaped rigid plate members are thin and the shape retention strength, the buckling strength and the longitudinal bending strength are increased while reducing the weight of the entire apparatus. In addition to applying excessive compressive force to the viscoelastic body during both assembly and actual use, the thickness of the viscoelastic body is maintained as specified and the deformation characteristics of the viscoelastic body are fully utilized. And exhibit excellent damper performance.

Furthermore, by using a spacer having a solid rectangular cross section as a spacer for integrally connecting the first band-shaped rigid plate members, a spacer having a U-shaped cross section such as a standard channel material is used. There are no restrictions on the thickness of the viscoelastic body, and the freedom of design to freely set the dimensions of the spacer and the thickness of the viscoelastic body in consideration of the balance between the strength of the entire device and the damper performance, which differs depending on the application conditions. As a result, the range of application of the damping device can be expanded. In addition, since the bolts that penetrate through the solid portion of the solid rectangular cross-section spacer are integrally connected, the assembly man-hour is reduced compared to the case of using a U-shaped spacer such as a standard channel material. There is an effect that the total manufacturing cost can be reduced.

In particular, when adopting a configuration in which the first belt-shaped rigid plate member and the spacer having a solid rectangular cross section are spot-welded at a plurality of locations in the longitudinal direction thereof, as described in the second aspect, it is difficult to assemble. Thus, it is possible to easily obtain a vibration damper device that ensures the predetermined damper performance by ensuring the positioning between the first belt-shaped rigid plate member and the spacer.

[Brief description of the drawings]

FIG. 1 is a model structure diagram showing an outline of a vibration damper device according to the present invention.

FIG. 2 is a side view of a brace-type vibration damper device A configured so as to be practicable using the model shown in FIG. 1 as a basic structure.

FIG. 3 is a plan view of the brace type vibration damper device.

FIG. 4 is a vertical sectional front view of the brace type vibration damper device.

FIG. 5 is a side view showing a use state of the brace type vibration damper device.

FIG. 6 is a vertical sectional front view of a conventional vibration damper device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st steel plate (1st rigid plate) 2 2nd steel plate (2nd rigid plate) 3 Viscoelastic body 4 Spacer 5 Bolt 6 Nut A Brace type vibration damper

Claims (2)

[Claims] 1. At least two mutually parallel and spaced apart jointable to one of the opposing portions of the structural skeleton.
The first band-shaped rigid plate members can be joined to the other of the opposing portions of the structural frame, and are disposed at an intermediate position between the at least two first band-shaped rigid plate members in parallel with the rigid plate members. What is claimed is: 1. A vibration damper device comprising at least one second band-shaped rigid plate, and a viscoelastic body interposed between said first band-shaped rigid plate and said second band-shaped rigid plate. Between the opposing surfaces at both ends in the width direction of the first rigid plate material, spacers each having a solid rectangular cross section are interposed, and two spacers are tightened by bolts and nuts penetrating the solid portions of these spacers. Wherein the first rigid plate members are integrally connected to each other. 2. The vibration damper device according to claim 1, wherein the first band-shaped rigid plate member and the spacer having a solid rectangular cross section are spot-welded at a plurality of positions in a longitudinal direction thereof.