JP3899252B2 - Vibration damper device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damper device. Specifically, when an interlaminar displacement force due to wind pressure, earthquake, etc. is applied to a building, such as a building, the displacement (vibration) energy is absorbed to attenuate the shaking motion and vibration of the building. The present invention relates to a vibration damper device that is used as a brace, a cane, or the like in a structural framework.
[0002]
[Prior art]
In general, this type of vibration damper device includes a plurality of first rigid members such as a plurality of steel plates arranged parallel to each other at intervals, and intermediate positions between adjacent members of the plurality of first rigid members. An energy absorbing material such as a viscoelastic body is interposed between the opposing surfaces of the second rigid member such as at least one steel plate arranged in parallel to the one rigid member, and the structural framework is formed by an earthquake or the like. When the first and second rigid members are displaced relative to each other due to the interlaminar displacement force, the displacement energy is absorbed by the shear deformation of the layered energy absorber, thereby damping the vibration and vibration of the building. It is configured to demonstrate performance.
[0003]
By the way, in the damping damper device that exhibits the damping performance by utilizing the shear deformation characteristics of the energy absorbing material as described above, the energy absorbing material inherently has the energy absorption in order to stably maintain the desired damping performance. It is important not to degrade the performance. In order to do so, the energy absorbing material should not be subjected to deformation force other than shear such as excessive compression, bending, torsion, etc., that is, a large tensile force or The first and second rigid members bearing the compressive force are required to have sufficient buckling strength so that they do not buckle or deform.
[0004]
As the vibration damper device 30 having such a high buckling strength, for example, as shown in FIG. 5, conventionally, left and right side plates 20 and 20 that are opposed to each other in parallel along the longitudinal direction of the damper and spaced apart from each other. The intermediate plate 21 disposed at an intermediate position between the left and right side plates 20 and 20 is composed of a flat steel plate (first rigid member), and is perpendicular to the damper longitudinal direction of the left and right side plates 20 and 20. Between the two ends, the channel steels 22 and 22 are fixedly connected by bolts and nuts, etc., while the left and right side plates 20 and 20 and the intermediate plate 21 are parallel to these plates 20, 20 and 21. The arranged sliding plates 23 and 23 are also formed of flat steel plates (second rigid members), and are formed between the left and right side plates 20 and 20 and the intermediate plate 21 and the sliding plates 23 and 23. Energy in each gap Interposing a viscoelastic material 24, 24 as an example of Osamuzai those constructed have been proposed.
[0005]
[Problems to be solved by the invention]
The conventional vibration damper device having the above-described configuration can ensure a very high buckling strength because a hollow rectangular parallelepiped is formed by the channel steels 22, 22 and the left and right side plates 20, 20. As a result, the flat steel plates 20, 21 and 23, which are the first and second rigid members, may buckle or bend even if they bear a great tensile force or compressive force in actual use. Therefore, the viscoelastic bodies 24 and 24 have the advantage that the desired vibration damping performance can be stably maintained over a long period of time without lowering the original energy absorption performance of the viscoelastic bodies 24, 24, but the dimensions of the channel steel and Since it is a combination of different types of flat steel plates, the number of components is large, the number of fixtures such as bolts and nuts used, the number of assembly steps, and the overall weight tends to increase. In addition, since multiple types of components with different shapes and dimensions are used, dimensional tolerances for each component are combined, and the alignment accuracy during assembly is likely to be distorted, resulting in complicated assembly work. There is a problem that not only the cost is increased, but also the finished quality of the product (damper device) tends to vary.
[0006]
The present invention has been made in view of the above-mentioned circumstances, and reduces the number of assembly steps, the assembly work efficiency, and the assembly while ensuring a high buckling strength that can stably maintain the desired vibration damping performance for a long period of time. An object of the present invention is to provide a vibration damping damper device capable of improving accuracy and reducing costs and making the finished quality constant.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a vibration damper device according to the present invention includes a plurality of first rigid members arranged in parallel with a distance from each other, and an intermediate between adjacent members of the plurality of first rigid members. A vibration damping device comprising: at least one second rigid member disposed in parallel with the first rigid member at a position; and an energy absorbing material sandwiched between opposing surfaces of the first and second rigid members. A damper device,
All of the first and second rigid members use unequal angle irons, and the plurality of unequal angle irons for the first rigid member and at least one unequal angle iron for the second rigid member are their lengths. The side surface portions are opposed surfaces that sandwich the energy absorbing material, and the short side surface portions are arranged in a posture extending in different directions from each other, and a plurality of irregularities for the first and second rigid members are disposed. The equilateral angle irons are fixed to each other in a state in which the short side surfaces are in contact with each other so that the long side surfaces are held at a predetermined interval, and the vibration damper device is attached to both ends of the damper in the longitudinal direction. includes a joint portion joined respectively to the gusset plate positioned diagonally of the structural framework which definitive in building, first rigid member by one of the connecting portions above is connected to one of the gusset plate above the other joint By part Second rigid member is characterized in that connected to the other of the gusset plate.
[0008]
According to the present invention having the above configuration, even when a large tensile force or compressive force is borne in the actual use state of the damper device by using the unequal side angle steel as the first rigid member and the second rigid member, Exhibits high buckling strength that does not cause buckling deformation or bending deformation of rigid members, and does not apply deformation force other than shear such as excessive compression, bending, and twisting to the energy absorbing material, so energy absorption It is possible to maintain the desired vibration damping performance stably over a long period of time without deteriorating the energy absorption performance inherent to the material. In addition, by using unequal angle irons of the same shape and dimensions for all of the rigid members, the number of components and the number of components are reduced, and accordingly the types of fixtures used such as bolts and nuts, the number of components used Therefore, the assembly work can be simplified and the number of assembling steps can be reduced, so that the manufacturing cost of the entire product can be significantly reduced. In addition, since the unequal angle irons used as the plurality of first rigid members and second rigid members only need to be fixed to each other with their short side surfaces in contact with each other, the alignment accuracy during assembly is improved. As a result, it is possible to improve the assembly work efficiency and the assembly accuracy, and to obtain a damper device in which the finished dimensions and quality are constant, and the finished dimensions and quality do not vary regardless of the number of unequal angle irons used. Is possible.
[0009]
As the unequal side angle irons for the first and second rigid members in the vibration damper device having the above-described configuration, unequal side equal thickness irons may be used. It is preferable to use an unequal side unequal thickness angle steel having a side face portion thinner than a short side face portion. In this case, it is possible to further reduce the cost and weight of the entire damper device while maintaining a sufficiently high buckling strength with the use of the unequal side angle steel.
[0010]
Moreover, in the vibration damper device having the above-described configuration, as described in claim 3, the thickness direction of the energy absorbing material is provided between the long side surface portions that are the opposed surfaces of the unequal angle irons for the first and second rigid members. In the case of adopting a configuration in which an interval maintaining member that receives the compressive load applied to the member and holds the thickness of the energy absorbing material constant over the entire layer is interposed, when the damper device is not loaded in an actual use state Even if a compressive load is applied in the thickness direction of the energy absorber during actual load operation, the load can be received by the interval maintaining member to keep the shear thickness of the energy absorber constant throughout the entire layer. It is possible to prevent stress relaxation and permanent distortion from occurring in the energy absorbing material, maintain the energy absorbing performance well and maximize the specified vibration damping performance even after long-term use. It is possible.
[0011]
Furthermore, as said space | interval maintenance member, as described in Claim 4, it does not produce baking between the metal member by which the anti-seizing process was carried out , or the long side surface part of the unequal angle iron which is a sliding contact surface. It is desirable to use a member having a low coefficient of friction with the long side surface portion . Further, as described in claim 5, by disposing the gap maintaining member so as to surround the entire periphery of the energy absorbing material, a viscoelastic body or heat having high fluidity and temperature dependency can be used as the energy absorbing material. Even when a plastic elastomer is used, the performance of the energy absorbing material can be stably maintained by preventing the energy absorbing material from flowing out and deteriorating the performance due to temperature changes with the interval maintaining member.
[0012]
In addition, as an energy absorbing material in the vibration damper device according to the present invention, an elastic body such as urethane asphalt rubber or a high damping rubber may be used in addition to the viscoelastic body and the thermoplastic elastomer.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall side view of a brace-type damping damper device according to the present invention. The damping damper device 10 includes three unequal side unequal thick angle steels 1 for a first rigid member, As shown in FIG. 2, the lengths of the two unequal side unequal thickness angle steels 2 and 2 for the second rigid member having the same cross-sectional shape and cross-sectional dimensions as the equal side unequal thickness angle steels 1. The side surface portions 1a... And 2a, 2a are arranged in a parallel state with a certain distance from each other, and the short side surface portions 1b... 2b, 2b are arranged in a posture extending in different directions. Has been.
[0014]
The three unequal side unequal thick angle steels 1 for the first rigid member are arranged so that their long side face parts 1a are held at a predetermined interval with their short side face parts 1b. Are connected to each other by tightening and fixing the short side surface portions 1b, 1b... That are in contact with each other with bolts and nuts 3. The angle steels 2 and 2 are also brought into contact with each other in the damper width direction so that the long side surface portions 2a and 2a are held at a predetermined interval, and the short side surface portions are in contact with each other. 2b and 2b are fixedly connected to each other by fastening them with bolts and nuts 4.
[0015]
The long side surface portion 1a of each unequal side unequal thick angle steel 1 for the first rigid member and the long side surface portion 2a of each unequal side unequal thickness angle steel 2 and 2 for the second rigid member parallel thereto. 2a, viscoelastic bodies 5 as an example of energy absorbing material are sandwiched between layers facing each other, as shown in FIG. 2, and the entire area around these viscoelastic bodies 5 ... Between the opposing surfaces of the long side surface parts 2a, 2a of the unequal side unequal thick angle steels 2, 2 in the surrounding state, the viscoelastic body 5 ... Interval maintaining members 6 for maintaining the wall thickness are interposed. As the gap maintaining members 6..., Steel members subjected to anti-seize treatment or low friction members such as MC nylon are used, but steel balls or the like may be used.
[0016]
One end of the damping damper device 10 in the longitudinal direction is one unequal side inequality located in the middle of the damper thickness direction among the three unequal side unequal thick angle steels 1 for the first rigid member. Bolt holes that can be bolted to one of the gusset plates fixed to the four corners of the structural framework in the building by extending only the thick steel section 1 outward in the longitudinal direction of the damper from the damping region L 7A having 7... Are formed. Further, at the other end in the longitudinal direction of the vibration damper device 10, as shown in FIG. 3, vibration is suppressed by the ends of two unequal side unequal thickness irons 2 and 2 for the second rigid member. The portions 2c and 2c projecting outward in the longitudinal direction of the damper from the action region L are folded and overlapped with each other in the damper thickness direction, and another short unequal unequal thickness is formed on the overlapping portions 2c and 2c. The angle steel 8 can be further overlapped and fixed, and only the short non-uniform unequal thickness angle steel 8 that is overlapped and fixed can be extended outward in the longitudinal direction of the damper to be bolted to the other one of the gusset plates. A joint portion 10B having various bolt holes 9 is formed.
[0017]
As shown in FIG. 4, the vibration damper device 10 configured as described above includes a structural frame 13 composed of a steel column 11 and a steel beam 12 in a building with joints 10 </ b> A and 10 </ b> B at both ends in the longitudinal direction of the damper. Are used as a brace for seismic reinforcement of the structural framework 13 or a wand for seismic reinforcement. And in such a use mode, when relative displacement occurs between the steel column 11 and the steel beam 12 of the structural framework 13 due to interlaminar displacement force due to wind pressure, earthquake, or the like on the building, the damping damper device 10 The unequal side unequal thickness angle steels 1 and 2 and 2 are relatively slid and displaced in the longitudinal direction of the damper, and the displacement energy is absorbed by the shear deformation of the viscoelastic body 5. It will exhibit damping performance such as damping the vibration and vibration.
[0018]
Here, by using the unequal sides and unequal thickness angle steels 1..., 2 and 2 for all of the first and second rigid members for the damper, a great tensile force and compression can be achieved in the actual use state of the vibration damper device 10. Even when a force is applied, each rigid member exhibits a high buckling strength that does not bend or deform, and the viscoelastic body 5 is not subjected to shear such as excessive compression, bending, and twisting. Therefore, the energy absorption performance inherently possessed by the viscoelastic bodies 5 is not reduced, and the desired vibration damping performance can be stably maintained over a long period of time.
[0019]
Further, at the time of the above-mentioned vibration damping action, a gap maintaining member 6 is interposed between the unequal side unequal thick angle steels 1, 2 which are relatively displaced by sliding, and these gap maintaining members The frictional resistance force is generated by 6..., And the damping action by the frictional resistance further enhances the ability to absorb the displacement energy, thereby significantly improving the vibration damping performance. Further, even if a compressive load in the thickness direction is sometimes applied to the viscoelastic bodies 5 when the vibration damping damper device 10 is not loaded or is actually loaded due to the presence of the gap maintaining members 6. It is possible to keep the layer thickness of the viscoelastic bodies 5 ... constant throughout the entire layer by receiving the gap maintaining members 6 ..., thereby reducing the stress of the viscoelastic bodies 5 ... Generation | occurrence | production etc. can be prevented, the energy absorption performance of viscoelastic body 5 ... can be kept favorable, and a predetermined damping performance can be exhibited to the maximum even after long-term use.
[0020]
In the above-described embodiment, the vibration damper apparatus is constructed by assembling three of the unequal side unequal thickness irons 1 for the first rigid member and two of the unequal side unequal thickness irons 2 for the second rigid member. As described above, four or more first stiffnesses can be obtained by assembling two of the unequal side unequal thickness irons 1 for the first rigid member and one of the unequal side unequal thickness irons 2 for the second rigid member. It may be an assembly of the unequal side unequal thickness angle steel 1 for the member and the unequal side unequal thickness angle steel 2 for the three or more second rigid members. Instead of this, a thick angle steel with unequal sides may be used.
[0021]
Further, in the vibration damper device 10 having the configuration shown in the above embodiment, the unequal side unequal thick angle steel 1 for the first rigid member and the unequal side unequal thickness angle steel 2 for the second rigid member are provided. Relative sliding displacement is also possible in the damper width direction, and the displacement in that direction can be absorbed by the shear deformation of the viscoelastic body 5, but used in a place or installation posture where the displacement force in the damper width direction does not work. In the case of the vibration damper device to be obtained, as shown by the phantom line in FIG. 2, the unequal side unequal thick angle steel 1 for one first rigid member and the unequal side unequal thickness angle steel 2 for the second rigid member. The angle-shaped restraining member 11 may be fixedly connected between the two to restrain the relative sliding displacement in the damper width direction. Further, between the restraining member 11 and the short-side surface portion 2b of the unequal side unequal thickness chevron 2 for the second rigid member, the unequal side unequal thickness chevron 1 for the first rigid member and the second rigid member You may provide the clearance which accept | permits the relative displacement within the fixed range to the damper width direction Z with the unequal-side unequal-thickness angle steel 2.
[0022]
Moreover, in the said embodiment, as means for mutually fixing the three unequal side unequal thickness irons 1 for the first rigid member and the two unequal side unequal thickness irons 2 for the second rigid member, The means for tightening and fixing the contact portions of the short side surface portions 1b and 2b with bolts and nuts 3 and 4 was adopted. However, the internal thread portions are tapped into the short side surface portions 1b and 2b, and the bolts are screwed into the internal thread portions. It may be in the form.
[0023]
[0024]
【The invention's effect】
In short, according to the present invention, the first and second rigid members, which bear a great amount of tensile force and compressive force in the actual use state of the damper device, all have the same shape and the same size of the unequal side chevron. By using this, it is possible not only to secure high buckling strength and stably maintain the desired vibration damping performance for a long period of time, but also to reduce the number of types of components and the number of components, and accordingly Since the types and number of fasteners such as bolts and nuts are also reduced, the assembly work can be simplified and the number of assembly steps can be reduced, and the production cost of the entire product can be significantly reduced. Moreover, since the short side surfaces of the unequal angle irons used as the plurality of first rigid members and second rigid members may be fixed to each other while being in contact with each other, the alignment accuracy at the time of assembly is improved, and assembly is performed. Work efficiency and assembly accuracy can be improved, regardless of the number of unequal angle irons used, there is no variation in finished dimensions and quality, and a damper device with a constant external dimension and quality can be obtained. There is an effect.
[0025]
In particular, as in claims 3 and 4, a seizure-preventing metal member or a sliding contact surface is provided between the long side surface portions which are the opposed surfaces of the unequal side angle steel for the first and second rigid members. An interval maintaining member that keeps the thickness of the energy absorbing material constant over the entire layer, such as a member having a low coefficient of friction with the long side surface part to the extent that no seizure occurs between the long side surface part of the unequal side angle steel. Even if a compression load is applied in the thickness direction of the energy absorbing material when the damper device is in an unloaded state or during an actual load operation, the load is received by the interval maintaining member. The energy absorbing material can be kept constant in the shear thickness throughout its entire layer, and the energy absorbing performance is maintained well by preventing stress relaxation and permanent deformation of the energy absorbing material. In A predetermined damping performance can be maximized.
[0026]
Further, as described in claim 5, by arranging the gap maintaining member so as to surround the entire periphery of the energy absorbing material, the energy absorbing material can be a viscoelastic body or heat having high fluidity and temperature dependency. Even when a plastic elastomer is used, the performance of the energy absorbing material can be stably maintained by preventing the energy absorbing material from flowing out and deteriorating the performance due to temperature changes with the interval maintaining member.
[Brief description of the drawings]
FIG. 1 is an overall side view of a brace-type damping damper device according to the present invention.
FIG. 2 is an enlarged longitudinal sectional view taken along line XX in FIG.
3 is a longitudinal sectional view taken along line YY in FIG.
FIG. 4 is a side view showing a usage state of the brace-type vibration damper device according to the present invention.
FIG. 5 is a longitudinal sectional front view of a conventional vibration damper device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Unequal side unequal thick angle steel for 1st rigid members 1a Long side surface part 1b Short side surface part 2 Unequal side unequal thick angle steels for 2nd rigid member 2a Long side surface part 2b Short side surface part 5 Viscoelastic body (energy Example of absorbent material)
6 Spacing member 10 Damping damper device

Claims (6)

A plurality of first rigid members arranged in parallel with a distance from each other, and at least one first member arranged in parallel to the first rigid members at an intermediate position between adjacent members of the plurality of first rigid members. A damping damper device comprising a two rigid member and an energy absorbing material sandwiched between opposing surfaces of the first and second rigid members,
Use unequal side angle steel for all of the first and second rigid members,
The plurality of unequal side chevrons for the first rigid member and the at least one unequal angle chevron for the second rigid member are opposed to each other with their long side surfaces sandwiching the energy absorbing material, and The short side surface portion is arranged in a posture extending in different directions, and
A plurality of scalene angle steel for the first and second rigid members are their long sides face each other are secured to each other being in contact with the short side face each other so as to be held at a predetermined interval,
The vibration damper device includes joint portions respectively joined to gusset plates positioned in the diagonal direction of the structural framework in the building at both ends in the longitudinal direction of the damper, and the first rigid member is provided by the one connection portion. The vibration damper device is connected to the one gusset plate, and the second rigid member is connected to the other gusset plate by the other joint .   The unequal side unequal thickness angle steel whose thickness of the long side surface portion is thinner than the thickness of the short side surface portion is used as the unequal side angle steel for the first and second rigid members. Damping damper device. Between the long side surface portions which are the opposed surfaces of the unequal side chevron for the first and second rigid members, the compressive load applied in the thickness direction of the energy absorbing material is received and the thickness of the energy absorbing material is layered. The vibration damping damper device according to claim 1 or 2, wherein a spacing maintaining member that holds the entire region constant is interposed. The gap maintaining member has a low coefficient of friction with the long side surface part to such an extent that it does not cause seizure between the seizure-prevented metal member or the long side surface part of the unequal side angle steel that is the sliding contact surface. The damping damper device according to claim 3, wherein the damping damper device is a member.   The vibration damping damper device according to claim 3 or 4, wherein the spacing maintaining member is disposed so as to surround the entire periphery of the energy absorbing material.   6. The vibration damper according to claim 1, wherein the energy absorbing material is one selected from urethane asphalt or rubber viscoelastic body, elastic body, high damping rubber, and thermoplastic elastomer. apparatus.

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