JP2000240316A - Vibration control structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain sufficient vibration control effect without obstructing a degree of freedom of a construction plan by providing a plurality of studs between upper and lower large beams, connecting a part threbetween by a batten beam, and providing a damper material for absorbing vibration on a part of the stud and the batten beam. SOLUTION: A stud 5 interposing a damper mateial 9 comprising a dead soft steel between a pair of upper and lower column materials 7, 8 is erected between upper and lower large columns 4. Rigid joint frame structure 15 fixed on the large beam 4 is formed by the upper side column material 7 and the upper side batten beam 6, and rigid joint frame structure 16 fixed on the lower side large beam 4 is formed by the lower side column material 8 and the lower side batten beam 6. Thereby the displacement of the stud can be suppressed by the batten beam, and, since interlayer displacement appearing as the relative displacement between the large beams can be effectively acted as the displacement amount of the damper material, excellent vibration control effect is obtained. In addition, since the vibration control structure forms by using the stud, a degree of freedom of a construction plan is not obstructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control structure for reducing a vibration response of a building frame during an earthquake.

[0002]

2. Description of the Related Art Since the Great Hanshin Earthquake, the anti-seismic safety of buildings has been increasing, and in particular, a vibration control structure capable of dramatically reducing earthquake input has been spotlighted. However, low-cost and effective damping structures have not been developed yet, and various structures (dampers) are being proposed by various companies. These damping structures are usually installed in the building frame,
It is incorporated in the form of walls, braces, bent columns, etc.

[0003]

When the damping structure is incorporated in a building in the above-described manner, walls and braces are strictly restricted by the architectural plan, and are likely to be difficult to adopt in a design. On the other hand, although bending columns are not likely to hinder the degree of freedom in architectural planning, the displacement that can be given to the damper due to deformation of beams and bending columns themselves is only a part of interlayer displacement, There is a problem that the damping effect is small.

Accordingly, in the present invention, the ratio of the displacement that can be given to the damper with respect to the interlayer displacement is not large as compared with the conventional one without hindering the degree of freedom of the architectural plan. It is an object to provide a vibration control structure capable of obtaining a vibration control effect.

[0005]

Means for Solving the Problems To solve the above problems, the present invention employs the following means. That is,
The seismic control structure according to claim 1 is a seismic control structure installed in a surface constituting a frame of a building, wherein a plurality of studs are provided between upper and lower girders, and a space between the studs penetrates. The structure is characterized in that a damper material for absorbing vibration of the frame is provided on at least a part of the studs and the through beams, which are connected by beams.

[0006] Because of such a configuration, in this vibration control structure, the deformation of the studs when the interlayer displacement occurs during the earthquake can be suppressed by the through beams.
The interlayer displacement can be transmitted to the damper material satisfactorily.

According to a second aspect of the present invention, in the vibration control structure of the first aspect, the stud is formed by interposing the damper material between a pair of upper and lower pillar materials, These studs are configured such that the lower ends of the pillar members located on the upper side are connected by the through beams, and the upper ends of the pillar members located on the lower side are connected by the other through beams. It is characterized by having.

[0008] In order to have such a configuration, in this vibration control structure, the column member and the beam located on the upper side form a rigid rigid frame structure, and the column member and the beam located on the lower side. Form a rigidly connected rigid frame structure, and a damper material is interposed between these two rigid frame structures. For this reason, the relative displacement generated between the upper and lower girders can be favorably transmitted to the damper material via the upper and lower rigid frame structures.

According to a third aspect of the present invention, there is provided a vibration control structure according to the first aspect, wherein the stud has a damper material fixed to one of the upper and lower girders, and one end has the upper and lower beams. It is characterized in that the other end of the girder is fixed to the pillar material and the other end is fixed to the damper material, and the other end of the pillar material is connected by the through beam.

[0010] Because of such a configuration, in the vibration control structure, a rigid connection frame structure including a column member and a through beam is fixed to one of the upper and lower girders. A damper material is interposed between the other large beam. Therefore, the relative displacement generated between the upper and lower beams can be transmitted to the damper material.

According to a fourth aspect of the present invention, in the vibration control structure of the first aspect, the stud is formed by interposing the damper member between a pair of upper and lower column members. The damper members of these studs are connected by the through beam.

In order to obtain such a structure, in this vibration control structure, the panel at the joint between the stud and the through beam is used as a damper, so that the rigid connection rigid frame structure constituted by the stud and the through beam is used. Is deformed, so that energy can be effectively absorbed by the damper portion.

According to a fifth aspect of the present invention, there is provided a vibration control structure according to the first aspect, wherein a central portion of the through beam is formed of the damper material.

Due to such a configuration, in this vibration control structure, the studs and one end and the other end of the through beam form a rigid structure, and a damper material is interposed between these rigid structures. Will be mounted. Therefore, the relative displacement generated between the upper and lower girders can be satisfactorily transmitted to the damper material via these rigid structures.

According to a sixth aspect of the present invention, there is provided a vibration control structure according to any one of the first to fifth aspects, wherein the damper material is formed of extremely mild steel.

Due to such a configuration, in this vibration damping structure, a stable hysteresis performance can be obtained without a change in the physical properties of the damper material due to the temperature and the frequency.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention, and reference numeral 1 indicates a vibration control structure. The vibration control structure 1 is installed in a surface 3 constituting a frame 2 of a building, and includes a pair of studs 5, 5 installed between upper and lower girders 4, 4, and these studs 5, 5. It is roughly constituted by beams 6 and 6 installed between them.

The stud 5 has a configuration in which a damper material 9 made of extremely mild steel is interposed between a pair of upper and lower pillar materials 7 and 8. The upper end 7a of the column member 7 located on the upper side is rigidly connected to the girder 4 and the lower end 7b is rigidly connected to the end of the through beam 6 and another stud via the through beam 6. 5 is connected to the lower end 7b of the column 7. Further, the upper end 8a of the pillar member 8 located on the lower side is rigidly connected to the end of the through beam 6, and is connected to the upper end 8a of the pillar member 8 in the other stud 5 via the through beam 6. The lower end 8 b is rigidly connected to the girder 4.

FIG. 2 is an enlarged view showing the vicinity of the damper member 9. The damper member 9 is a substantially E-shaped member when viewed from the front, and has a configuration in which one surface thereof is reinforced by a rib plate 11 made of ordinary steel, as shown in FIG. Also, as shown in FIG.
The abutment plates 12, 12, 12 are applied to the a and the lower end 9b from the outside, and further, the abutment plates 12, 12, 12, the upper end 9a or the lower end 9b of the damper member 9, and the lower end 7b or the column As shown in FIGS. 4 and 5, the upper end 8a of the material 8 is integrated by being joined using high-strength bolts 13,.

With such a configuration, the upper column members 7, 7
The rigid beam structure 15 (see FIG. 1) fixed to the upper girder 4 is formed by the upper and lower beams 6, and the lower pillars 8 and 8 and the lower and lower beams are formed. 6, rigid rigid frame structure 16 fixed to lower girder 4
(See FIG. 1). The damper members 9 and 9 are connected to the rigid frame structures 15 and 16 respectively.
It is provided so that it may be located between. Therefore, when an interlayer displacement acts on the frame 2 during an earthquake and the upper and lower girders 4, 4 are relatively displaced in the direction A in FIG. Can be sheared, whereby the damper members 9, 9 can be plastically deformed to absorb the vibration energy of the frame 2. At this time, since the column members 7, 7 and 8, 8 are integrated with the through beams 6, 6, the bending deformation caused by the load of the damper members 9, 9 is suppressed, and therefore, the interlayer The displacement is transmitted to the damper members 9, 9 without being substantially reduced due to the bending deformation of the column members 7 and 8. Further, in this case, since the damper material 9 is stiffened by the rib plate 11 and the backing plate 12, out-of-plane deformation and twist of the stud 5 can be suppressed.

As described above, in the vibration control structure 1, the displacement of the studs 5, 5 can be suppressed by the through beams 6, 6 during an earthquake, and therefore, the relative displacement between the girders 4, 4 can be reduced. Can be effectively caused to act as the amount of deformation of the damper material. This allows
Excellent vibration control effect can be obtained.

Further, in the vibration damping structure 1, a stud 5 is formed by interposing a damper member 9 between a pair of upper and lower pillar members 7, 8, and the pillar member 7 located on the upper side is formed. Of lower ends 7b of each other and column member 8 located on the lower side
Of the two rigidly connected rigid frame structures 15 and 16
The damper material 9 is interposed between them, and the interlayer displacement is concentrated on the deformation of the damper materials 9 and 9, so that a large shear strain can be obtained at this portion, and an effective damper is constructed from the small interlayer displacement. can do. Accordingly, it is possible to realize a vibration control frame effective not only for steel structures but also for SRC and RC structures which have high rigidity and small interlayer displacement and are difficult to be applied by the conventional vibration control method.

In particular, when compared with a conventional vibration damping structure of a type in which a damper such as an ultra-soft steel web or a shear panel is provided at a position where there is no bending stress at the center of a bending column, the conventional structure has a damping force of the damper. As a result of the deformation of the bending column, the interlayer deformation loss occurs, and the efficiency of the damper is reduced.
Since the stud 5 and the beam 6 are rigidly connected in the vicinity of the mounting portion, the stud 5 can be expected to be bent back, the deformation of the stud 5 due to the load of the damper material 9 is reduced, and interlayer deformation is effective. In addition, the damper member 9 acts on the damper member 9 to realize an effective vibration control structure. Further, conventionally, in order to reduce the deformation of the bent column, a steel material having a large size is used for the bent column. However, in the above-described vibration control structure 1, the stud 5 is made of an assembling material, so that low cost is achieved. Therefore, even if a light steel material is used, it is possible to obtain the same performance as the conventional one.

Further, in the above-described vibration control structure 1, since the bending back is applied in the middle of the stud 5 by the through beam 6, the bending moment acting on the girders 4, 4 can be reduced. (Assuming that the damper burden is Q and the floor height is h, in the conventional bending column, the moment M acting on the girder is M = Q × h, but in this embodiment, Assuming that the bending moment is Mn, the bending moment M ′ acting on the girders 4 and 4 is M ′ = Q × h
-Mn. )

Further, in the above-described vibration damping structure 1, since the damper material 9 is formed of extremely mild steel, the physical properties of the damper material 9 do not change with temperature and frequency.
A stable hysteresis performance can be obtained, and thereby an excellent vibration control effect can be stably obtained. Further, by using extremely mild steel as the damper material 9, a steel damper having a small yield stress can be realized, and even when the damper is in a yielded state, most of the frame 2 still retains elasticity without yielding. Therefore, the residual deformation after the earthquake that occurs in the frame 2 can be made sufficiently smaller than the maximum deformation. Thereby, the function can be maintained without leaving harmful residual deformation in the building after the earthquake. In addition, the damper material 9 made of extremely mild steel does not require any special consideration such as the need for upside-down use in transportation and installation as compared with a viscous damper or the like, and does not require special consideration.

Further, in the above-described damping structure 1, when the plasticity of the damper is excessive, or when it is necessary to replace the damper after a fire or an earthquake, it is possible to replace only the damper portion made of extremely mild steel. And maintenance is easy. Also, the stud 5 does not bear the axial force, so that it can be easily replaced, and the burden on the resident and the repair work are reduced, and the construction period can be shortened.

Further, in the above-described vibration control structure 1, since the members to be used have the dimensions of a general structural material, including the vicinity of the damper member 9 which is a damper portion, the transportation and mounting are performed in a general steel frame. It can be performed in exactly the same way as the construction.

Further, in connection with the main body structure,
And the stud 5 only, and no connection with the pillar is required. Therefore, the present invention can be easily applied to a mixed structure of a steel frame and a rebar or a filled steel pipe concrete structure in which a steel pipe is small in thickness and a diaphragm is not easily inserted.

As described above, the use of the vibration damping structure 1 increases the hysteresis energy absorbed by the yielding of the extremely mild steel panel (damper material 9), reduces the seismic force acting on the building, and reduces the seismic safety. Can be improved. In addition, acceleration generated in the frame 2 during an earthquake is also reduced, and damage to furniture, fixtures, and equipment in the building can be prevented. Further, since the seismic force acting on the building is reduced, the cross section of the structural member is reduced, and the cost of the structural frame can be reduced. Furthermore, since the seismic control structure 1 is formed using the studs 5 instead of walls and braces, it is possible to secure a passage opening required for an architectural plan and a duct space required for a facility plan. In addition, since an opening space can be secured on the floor, wiring for OA and air conditioning under the floor can be easily handled.

In the above, one embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and other configurations may be adopted without departing from the gist of the present invention. It is possible.

For example, as shown in FIG. 6, the portion of the girder 4 located between the studs 5 and 5 may be reduced to be of a drop haunch type. Thereby, the air-conditioning duct space can be secured without using a down ceiling.

As shown in FIG. 7, the stud 17 is fixed to the damper 9 fixed to the lower surface of the upper girder 4, the upper end to the damper 9 and the lower end to the lower girder 4. The pillar 18 is formed by the fixed pillar 18.
May be connected to each other by a through beam 6.

With such a structure, the rigid connection frame structure 19 composed of the pillars 18 and 18 and the through beam 6 is fixed to the lower connection beam 4, and the rigid connection structure 19 and the upper connection beam 4 are fixed. Thus, a structure in which damper members 9 and 9 are interposed between the upper and lower girders 4 and 4 can be transmitted to the damper members 9 and 9 satisfactorily. it can. Therefore, even in such a configuration, it is possible to obtain the same effect as in the above-described embodiment.

As shown in FIG. 8, the studs 21 are fixed to the lower girder 4 with the damper material 9 and the lower end is fixed to the damper material 9 and the upper end is fixed to the upper girder 4. The same effect as in the above embodiment can be obtained even if the lower end of the column member 22 is formed by connecting the lower ends of the column member 22 with the through beam 6.

Further, as shown in FIG. 9, the stud 5 is configured so that a damper 9 is interposed between a pair of upper and lower pillars 7, 8, and the dampers 9 are connected to each other by a through beam 6. It may be. In this case, the panel at the joint between the stud 5 and the through beam 6 can be used as a damper, and the rigid rigid frame structure formed by the studs 5, 5 and the through beam 6 is deformed, so that it is effective at the damper portion. Can absorb energy. Thereby, the same effect as in the above embodiment can be obtained.

As shown in FIG. 10, the studs 23, which are not provided with a damper portion, are connected by a through beam 24 made of H-shaped steel. May be used. As a result, the studs 23, 23 and the portions of the through beam 24 located on the left and right of the ultra-mild steel 25 form rigid rigid frame structures 26, 26, and these rigid rigid frame structures 26, 26 are formed.
26, a configuration in which the damper material 9 is interposed can be realized. Accordingly, the mild mild steel 25 can be sheared and yielded by utilizing the relative displacement generated between the upper and lower girders 4, 4, and the same effect as in the above embodiment can be obtained.
Further, in this case, the beam may be bent and yielded by using extremely mild steel for the flange of the beam and reducing the cross-sectional performance, thereby forming a vibration control frame.

Apart from these, in the above-described embodiment, the column member 7 or 8, the through beam 6, and the girder 4 are formed as an integral member, and are joined to the damper member 9 at the time of construction on site. You can also When the floor height is large, a joint is provided on the stud 5. However, since the stud 5 is a general H-shaped steel, joining can be easily performed.

Apart from these, viscous dampers such as lead and friction dampers, BRC (Bitumen Rubber Compound), rubber-based viscoelastic dampers, and oil dampers can be used as the dampers.

In addition, other configurations may be adopted without departing from the spirit of the present invention, and the above-described modifications may be selectively adopted as appropriate. Needless to say.

[0040]

As described above, in the vibration damping structure according to the first aspect, at the time of an earthquake, the displacement of the studs can be suppressed by the through beams, and the interlayer displacement appears as a relative displacement between the girders. Can effectively act as the amount of deformation of the damper material. Thereby, an excellent vibration damping effect can be obtained. In addition, since this seismic control structure is formed using studs, it is possible to secure the passage opening required for architectural planning and the duct space required for equipment planning. Does not hinder.

In the vibration damping structure according to the second to fifth aspects, a rigid rigid frame structure is formed by the studs or the pillars constituting the studs and the beam, and the rigid frame structure is formed between the ramen structures or between the ramen structure and the frame. Because of this, or because the damper material is interposed inside this ramen structure, compared to the conventional vibration control structure using bent columns,
Bending back by these ramen structures can be expected, and deformation of the studs due to the load of the damper material can be suppressed to a minimum, so that interlayer deformation can effectively act as deformation of the damper material. Therefore, the interlayer displacement is concentrated on the deformation of the damper material, and the shear strain at this portion can be increased, and an effective damper can be constructed from the small interlayer displacement. Accordingly, it is possible to realize a vibration control structure effective not only for steel structures but also for SRC and RC structures which have high rigidity and small interlayer displacement and are difficult to be applied by the conventional vibration control method.

In the vibration damping structure according to the sixth aspect, since the damper material is formed of extremely mild steel, it is possible to obtain a stable hysteresis performance without a change in the physical property value of the damper material due to temperature and frequency. it can. This makes it possible to stably obtain an excellent vibration control effect.

[Brief description of the drawings]

FIG. 1 is a front view of a vibration control structure schematically showing an embodiment of the present invention.

FIG. 2 is an enlarged front view showing the vicinity of a damper material in the vibration damping structure shown in FIG.

FIG. 3 is an external perspective view of a damper material shown enlarged in FIG.

FIG. 4 is a sectional view taken along the line II in FIG. 2;

FIG. 5 is a sectional view taken along line II-II in FIG.

FIG. 6 is a front view showing a modification of the vibration damping structure shown in FIG.

FIG. 7 is a front view of a vibration damping structure schematically showing another embodiment of the present invention.

FIG. 8 is a front view of a vibration damping structure schematically showing still another embodiment of the present invention.

FIG. 9 is a front view of a vibration damping structure schematically showing still another embodiment of the present invention.

FIG. 10 is a front view of a vibration damping structure schematically showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vibration control structure 2 Frame 3 Construction surface 4 Large beam 5,17,21,23 Stud 6,24 Transit beam 7,8,18,22 Column material 9 Damper material

Claims (6)

[Claims] Claims: 1. A seismic control structure installed in a building surface constituting a frame of a building, wherein a plurality of studs are provided between upper and lower girders, and these studs are connected by through beams, A damping material is provided on at least a part of these studs and through beams to absorb vibration of the frame. 2. The vibration damping structure according to claim 1, wherein the stud is formed by interposing the damper material between a pair of upper and lower pillars, and the stud is located on an upper side. The lower ends of the column members are connected by the through beam, and the upper ends of the lower column members are connected by another through beam. Seismic structure. 3. The damping structure according to claim 1, wherein the stud is a damper material fixed to one of the upper and lower girders, and one end is fixed to the other of the upper and lower girders. Is formed by a pillar fixed to the damper material, and the other ends of the pillars are connected by the through beams. 4. The vibration damping structure according to claim 1, wherein the stud is formed by interposing the damper member between a pair of upper and lower pillar members, and the damper members of the stud members are connected to each other. And a damping structure connected by the beam. 5. The vibration damping structure according to claim 1, wherein a central portion of the through beam is formed of the damper material. 6. The vibration damping structure according to claim 1, wherein the damper member is formed of extremely mild steel.