JP6779480B2 - Vibration control device - Google Patents

Description

The present invention relates to a vibration control device used for suppressing vibration of a structure such as a building.

In recent years, from the viewpoint of improving the seismic resistance of structures such as buildings, vibration control devices for reducing the shaking of structures have been provided. Some such vibration control devices have both seismic resistance and vibration control functions. Patent Document 1 describes a vibration control device including a seismic section that receives seismic load in the elastic region and a seismic control section that functions as a damper after the seismic section yields and absorbs the shaking energy of the structure. ing.

The vibration control device described in Patent Document 1 includes seismic equipment provided with a trigger member that resists seismic load and breaks at a predetermined breaking strength, and a seismic damping damper that absorbs the vibration energy of the main body of the structure. It has. Then, when the load applied to the trigger member due to the vibration of the structure body is equal to or less than the breaking strength of the trigger member, a resistance force that resists the shaking of the structure is generated (that is, the seismic function is exhibited). When the breaking strength of the trigger member is exceeded, the trigger member is broken to generate a damping force by the vibration control damper (that is, the vibration control function is exhibited).

Japanese Unexamined Patent Publication No. 2011-042974

If the technology of Patent Document 1 is used, the seismic resistance of the structure can be remarkably improved by the seismic function of the seismic equipment and the seismic control function of the seismic damper. However, in the configuration of Patent Document 1, since seismic equipment and seismic damping dampers need to be installed in parallel or intersecting each other in the structure, a structure having narrow column spacing and beam spacing (that is, a narrow structure). It is difficult to apply to.

In addition, once the trigger member is broken by an earthquake, the seismic function is completely lost. Therefore, for further aftershocks, only the seismic control function by the seismic control damper is used to ensure sufficient seismic resistance. Can't. Further, in order to restore the function of the broken trigger member, it is necessary to replace it with a new trigger member, so that the trigger member needs to be detachably configured or easily accessible to the trigger member. Therefore, there are restrictions not only on the design of the vibration control device but also on the design of the structure itself using the vibration control device.

The present invention has been made in view of such circumstances, and an object of the present invention is a structure in which the column spacing and the beam spacing are narrow (that is, narrow) without the need for replacement parts such as the trigger member. It is an object of the present invention to provide a vibration control device that can be applied to the structure).

In order to solve the above problems and achieve the object, the vibration control device of the present invention is a vibration control device that is arranged in the frame of the structure and reduces the shaking of the structure due to an external force , and is one end in the axial direction. Is connected to a part of the frame, the other end in the axial direction is connected to the other part of the frame, and a seismic control device that generates a damping force in the axial direction with respect to the external force is connected in parallel with the seismic control device. A spring mechanism provided in the above, which generates a resistance force in the axial direction to the external force according to the relative displacement between the one end and the other end, and when a predetermined stress is generated in the spring mechanism, the said. A sliding mechanism that slides the spring mechanism in the axial direction with respect to the vibration control device is provided , and when the external force of a magnitude that does not operate the sliding mechanism is applied, the resistance force of the spring mechanism causes the spring mechanism. It is characterized in that the shaking is reduced, and when the external force of a magnitude that operates the sliding mechanism is applied, the shaking is reduced by the frictional force of the sliding mechanism and the damping force of the vibration control device. To do.

According to the present invention, a vibration control device that does not require a replacement part such as a conventional trigger member and can be applied to a structure having a narrow column spacing or beam spacing (that is, a narrow structure surface) is realized.

It is a figure which shows the installation example of the vibration control device which concerns on embodiment of this invention. It is external drawing explaining the schematic structure of the vibration control device which concerns on embodiment of this invention. It is a figure explaining the operation of the vibration control device which concerns on embodiment of this invention. It is a graph which shows the result of the effect confirmation experiment of the vibration control device which concerns on embodiment of this invention. It is a graph which shows the result of the effect confirmation experiment of the vibration control device which concerns on embodiment of this invention. It is a graph which shows the result of the effect confirmation experiment of the vibration control device which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, unless otherwise specified, the components, types, combinations, shapes, relative arrangements, etc. described in this embodiment are merely explanatory examples, not the purpose of limiting the scope of the present invention to that alone. .. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

(Vibration control device configuration)
FIG. 1 is a diagram showing an installation example of the vibration control device 1 according to the embodiment of the present invention. 2A and 2B are external views for explaining the schematic configuration of the vibration control device 1, FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a left side. It is a plan view. As shown in FIG. 1, the vibration control device 1 of the present embodiment is surrounded by two adjacent columns P1 and P2 of the structure S, and lower floor beams L1 and upper floor beams L2 adjacent to each other in the vertical direction. It is a device that is arranged in the frame (that is, the structure surface VP) and reduces the shaking of the structure S generated by an external force such as an earthquake.
The vibration control device 1 has a brace shape between the gusset plate GP provided at the intersection of the column P1 and the lower floor beam L1 and the gusset plate GP provided at the intersection of the column P2 and the upper floor beam L2. Be placed. Hereinafter, in the present specification, as shown in FIG. 2, the longitudinal direction of the vibration control device 1 is the X-axis direction, and the direction in which the pair of slider plates 214 and 224 are provided (that is, up and down in FIG. 2A). The direction) will be defined as the Y-axis direction, and the directions orthogonal to the X-axis and the Y-axis will be defined as the Z-axis direction. The alternate long and short dash line in FIGS. 2A and 2B shows the axial center of the vibration control device 1.

As shown in FIG. 2, the vibration control device 1 is slidably attached to the vibration control device 100 including the oil damper 110, the load column 120, and the rod end 130, and the load column 120. The pair of slider plates 214 and 224, the pair of frame plates 216 and 226 fixed to the rod end 130, and the slider plates 214 and 224 and the frame plates 216 and 226 are sandwiched between them, respectively, to elastically hold both. It is composed of viscoelastic bodies 218, 228 and the like to be connected.

The oil damper 110 is a cylindrical member filled with oil 116 inside (FIG. 3), and reduces vibration by converting the energy generated by an external force such as an earthquake into the thermal energy of the oil 116 (for details, see See below).

The load column 120 is a cylindrical member arranged so as to have a common axis with the oil damper 110. A pair of joints 122 and 124 protruding in the X-axis direction are formed on one end surface of the load column 120, and when the vibration control device 1 is attached to the structure S, the pair of joints 122 and 124 form a gusset plate GP. It is arranged so as to straddle (sandwich) and is rotatably attached by a fastening member such as a pin (not shown) (FIG. 1).

A pair of support members 210 and 220 to which the slider plates 214 and 224 are attached are formed on the outer peripheral surface of the load column 120, respectively. As shown in FIG. 2A, the pair of support members 210 and 220 are angle members having a substantially L-shaped cross section that protrude from the outer peripheral surface of the load column 120 in the Y-axis direction and the direction opposite to the Y-axis direction. , The flat surfaces 210a and 220a to which the slider plates 214 and 224 are attached are oriented outward (that is, the flat surfaces 210a and 220a are arranged so as to face the Y-axis direction) and welded to the outer peripheral surface of the load column 120. Is fixed by. Further, through holes (not shown) through which bolts 212 and 222 are inserted are formed in the flat surfaces 210a and 220a, and bolts 212 and 222 are elongated holes 214a and 224a of the slider plates 214 and 224 (in FIG. 2). The slider plates 214 and 224 are attached to the flat surface portions 210a and 220a by being inserted into the through holes (not shown) and fastened to the nuts 213 and 223.

The rod end 130 is a rectangular plate-shaped member joined to the other end of the piston rod 112 extending from the oil damper 110. A pair of joints 132 and 134 protruding in the X-axis direction are formed on one end surface of the rod end 130, and when the vibration control device 1 is attached to the structure S, the pair of joints 132 and 134 form a gusset plate GP. It is arranged so as to straddle (sandwich) and is rotatably attached by a fastening member such as a pin (not shown) (FIG. 1).

The pair of slider plates 214 and 224 are plate-shaped members extending in parallel in the X-axis direction with the vibration control device 100 sandwiched in the Y-axis direction. Long holes 214a and 224a extending in the X-axis direction are formed at the ends (base ends located on the left side in the drawing) of the pair of slider plates 214 and 224 on the upstream side in the X-axis direction (FIG. 2 (b)). )), A plurality of bolts 212 and 222 are inserted into the elongated holes 214a and 224a and fastened to the nuts 213 and 223, so that the slider plates 214 and 224 are attached to the flat surfaces 210a and 220a of the support members 210 and 220, respectively. Be done. That is, the pair of slider plates 214 and 224 are cantilevered by the pair of support members 210 and 220, respectively. In this embodiment, the plurality of bolts 212 and 222 and nuts 213 and 223 are fastened with a predetermined tightening torque, and the slider plates 214 and 224 are slidably fixed to the flat surfaces 210a and 220a. Has been done. Then, when a stress exceeding the sliding proof stress acts between the slider plates 214 and 224 and the flat surfaces 210a and 220a in the X-axis direction, the slider plates 214 and 224 slide with respect to the flat surfaces 210a and 220a. A predetermined frictional force is generated (details will be described later).

The pair of frame plates 216 and 226 are plate-shaped members arranged in close proximity to the slider plates 214 and 224 so that at least a part of each of the pair of slider plates 214 and 224 faces each other. The pair of frame plates 216 and 226 are cantilevered and supported by the end portion (base end portion) on the downstream side in the X-axis direction being fixed to the rod end 130.

The viscoelastic body 218 is a member that is sandwiched by being fixed to the slider plate 214 and the frame plate 216 by adhesion and elastically connects the two. Similarly, the viscoelastic body 228 is a member that is sandwiched by being fixed to the slider plate 224 and the frame plate 226 by a method such as adhesion, and elastically connects the two. In the present embodiment, the ends of the slider plates 214 and 224 on the downstream side in the X-axis direction and the ends of the frame plates 216 and 226 on the upstream side in the X-axis direction face each other, and both members face each other. A viscoelastic body 218 is arranged in the portion.
The viscoelastic body 218 of the present embodiment is a gel-like substance such as αGEL (registered trademark). In the present embodiment, when an external force such as an earthquake is applied to the vibration control device 1, the viscoelastic bodies 218 and 228 are sheared and deformed in the X-axis direction to generate a resistance force against the external force. (Details will be described later).

(Operation of vibration control device)
Next, the specific operation of the vibration control device 1 of the present embodiment will be described in more detail. FIG. 3 is a diagram illustrating the operation of the vibration control device 1. FIG. 3A shows a state in which no external force is applied to the vibration control device 1, and FIG. 3B shows a state in which a minute amplitude external force is applied to the vibration control device 1. FIG. c) shows a state in which a large-amplitude external force is applied to the vibration control device 1. Note that, in FIGS. 3A to 3C, for convenience of explanation, a partial schematic cross-sectional view of the oil damper 110 in the XY plane is shown.

As shown in FIGS. 3 (a) to 3 (c), the oil damper 110 of the present embodiment is inserted into the cylinder 111 filled with the oil 116 and the cylinder 111, and can freely move forward and backward in the axial direction (X-axis direction). It is provided with a piston rod 112 supported by the piston rod 112, and a piston 114 fixed around one end of the piston rod 112 (the end on the load column 120 side) and partitioning the inside of the cylinder 111 into two liquid chambers 111a and 111b. .. The other end of the piston rod 112 is joined to the rod end 130.

As shown in FIG. 3A, when no external force is applied to the vibration control device 1, the rod end 130 and the load column 120 of the vibration control device 1 are respectively located at the initial positions, and the piston 114 is also the cylinder 111. It is located approximately in the center of the axis.

When the structure S vibrates due to an earthquake or the like and an external force having a small amplitude is applied to the vibration control device 1, the relative positional relationship between the rod end 130 and the load column 120 changes. Therefore, the piston 114 is also displaced in the cylinder 111 in the axial direction (X-axis direction).
FIG. 3B shows a state in which a minute amplitude external force is applied to the rod end 130 in the direction indicated by the white arrow A1 (that is, the negative direction of the X-axis). As shown in FIG. 3B, when a small amplitude external force is applied to the rod end 130, the piston rod 112 fixed to the rod end 130 is axially pressed, and the rod end 130 and the load column 120 Since the relative position is displaced, the piston 114 is also displaced in the cylinder 111 in the axial direction, but at the same time, the pair of frame plates 216 and 226 fixed to the rod end 130 also try to be displaced in the axial direction. For this reason, axial shear stress (force to extend in the axial direction) is generated in the viscoelastic bodies 218 and 228 sandwiched between the slider plates 214 and 224 and the frame plates 216 and 226, but at the same time. , The viscoelastic resistance (that is, reaction) of the viscoelastic bodies 218 and 228 generates a resistance force (force that tries to contract in the axial direction) in the direction indicated by the black-painted arrow A2 (that is, the positive direction of the X-axis).
That is, the viscoelastic bodies 218 and 228 of the present embodiment function as a kind of spring mechanism provided in parallel with the oil damper 110, and follow the displacement of the piston rod 112 and shear as shown in FIG. 3 (b). Since it is deformed, the viscoelastic resistance accompanying this becomes a resistance force in the direction opposite to the moving direction and acts on the piston rod 112. Therefore, the external force applied to the rod end 130 is mainly absorbed by the viscoelastic resistance of the viscoelastic bodies 218 and 228 within a predetermined amplitude range (that is, within the range in which the viscoelastic bodies 218 and 228 are sheared and deformed). Become.
However, in such a configuration, if the amplitude of the external force applied to the rod end 130 becomes large, the viscoelastic bodies 218 and 228 may be broken by shearing. Therefore, in the present embodiment, when the shear stress of the viscoelastic bodies 218 and 228 becomes a predetermined value or more, the pair of slider plates 214 and 224 are slid in the axial direction to cause the viscoelastic bodies 218 and 228. It is configured so that it does not break or shear more than a predetermined amount.

FIG. 3C shows a state in which a large amplitude external force is applied to the rod end 130 in the direction indicated by the white arrow A3 (that is, the negative direction of the X axis) (that is, the viscoelastic bodies 218 and 228). The state in which the acting shear stress exceeds a predetermined value) is shown. In the present embodiment, when the shear stress acting on the viscoelastic bodies 218 and 228 becomes a predetermined value or more, the pair of slider plates 214 and 224 slide in the axial direction. The 224 is fixed to the flat surfaces 210a and 220a of the pair of support members 210 and 220 with a predetermined fastening force. In other words, the pair of slider plates 214 and 224 and the flat surface portions 210a and 220a form a kind of sliding mechanism. Therefore, when a large-amplitude external force is applied to the rod end 130, as shown in FIG. 3C, the pair of slider plates 214 and 224 are axially deformed while the viscoelastic bodies 218 and 228 are shear-deformed. Slide. Then, when the pair of slider plates 214 and 224 slide, resistance force (that is, frictional force) in the direction opposite to the moving direction (that is, the direction of the black arrow A4) is generated by friction with the flat surface portions 210a and 220a.

Further, when a large amplitude external force is applied to the rod end 130, the pair of slider plates 214 and 224 slide, so that the piston rod 112 fixed to the rod end 130 is largely displaced in the axial direction, and accordingly. The piston 114 in the cylinder 111 is also largely displaced in the axial direction. When the piston 114 is largely displaced in the cylinder 111, a pump action causes a flow in the oil 116, and the oil 116 passes through the orifice 114a formed in the piston 114, so that a pressure difference is generated before and after the orifice 114a. Since this pressure difference is applied to the cylinder 111 and the piston rod 112, a damping force is generated at the rod end 130 in the direction opposite to the moving direction (that is, in the direction of the black arrow). As described above, in the present embodiment, when a large amplitude external force is applied to the rod end 130, the pair of slider plates 214 and 224 are slid with respect to the flat surface portions 210a and 220a to be opposite to the moving direction. The resistance force in the direction is generated, and the damping force in the direction opposite to the moving direction is generated by the oil damper 110. Therefore, the external force applied to the rod end 130 is absorbed by the resistance force of the pair of slider plates 214 and 224 and the damping force of the oil damper 110.

In addition, in FIG. 3B and FIG. 3C, the operation when an external force is applied to the rod end 130 in the negative direction of the X-axis (that is, the operation in the compression direction of the oil damper 110). As described above, when an external force is applied to the rod end 130 in the positive direction of the X-axis, the operation of the oil damper 110 is merely in the opposite direction (that is, the operation is in the extension direction). , Detailed description will be omitted.

As described above, the vibration control device 1 of the present embodiment exerts a seismic resistance function mainly by utilizing the viscous resistance of the viscous elastic bodies 218 and 228 against a minute amplitude external force, and with respect to a large amplitude external force. Is configured to exert a vibration control function by utilizing the frictional force of the pair of slider plates 214 and 224 and the damping force of the oil damper 110. Therefore, according to the vibration control device 1 of the present embodiment, it is possible to accurately control the vibration of the structure regardless of the magnitude of the vibration energy. Further, in the present embodiment, since the pair of slider plates 214 and 224 are slidable so that the viscoelastic bodies 218 and 228 are not sheared, it is similar to a conventional trigger member. No replacement parts are required, and sufficient seismic resistance and damping functions are exhibited even against further aftershocks. Further, in the vibration control device 1 of the present embodiment, a spring mechanism having a seismic resistance function (that is, viscoelastic bodies 218 and 228), a sliding mechanism having a vibration control function (that is, slider plates 214 and 224), and an oil damper Since the 110 is integrally configured, one vibration control device 1 may be arranged for one structural surface VP, and the structure S with narrow column spacing and beam spacing (that is, narrow structural surface VP). ) Can also be applied.

(Effect confirmation experiment)
4 to 6 are the results of an effect confirmation experiment of the vibration control device 1 conducted by the inventor of the present invention and the like. FIG. 4 is a graph showing the results of performing a sine wave vibration experiment with a stroke of ± 10 mm using a vibration test device. FIG. 5 is a graph showing the results of performing a sine wave vibration experiment with a stroke of ± 20 mm using a vibration test device. Further, FIG. 6 is a graph showing the results of performing a random wave response experiment with a stroke of ± 20 mm using a vibration test device. In FIGS. 4 to 6, the horizontal axis represents the displacement amount (mm) applied by the vibration test device, and indicates the displacement of the rod end 130 of the vibration control device 1. The vertical axis shows the damping force (kN) of the vibration control device 1 measured by the measuring instrument. In FIGS. 4 to 6, the graphs shown by solid lines show the characteristics of the vibration control device 1 of the present embodiment, and the graphs shown by broken lines are for conventional construction without viscoelastic bodies 218 and 228. It shows the characteristics of the oil damper alone.

(Structure of vibration control device 1 used as a test body)
In the effect confirmation experiments shown in FIGS. 4 to 6, a bilinear oil damper for construction (manufactured by Sanwa Tekki Co., Ltd.) having the specifications shown in Table 1 below was used as the oil damper 110, and the viscoelasticity of the specifications shown in Table 2 was used. The vibration control device 1 was constructed by using the elastic body as the viscoelastic body 218 and 228. The slider plates 214 and 224 are not displaced until the shear deformation amount of the viscoelastic bodies 218 and 228 is 10 mm, and when the shear deformation amount of the viscoelastic bodies 218 and 228 exceeds 10 mm, the slider plates 214 and 224 are not displaced. Is configured to displace and generate frictional force. The main parameters of the test piece of the vibration control device 1 are as follows.
(1) Rigidity up to a displacement of 10 mm: 12.5 kN / mm
(2) Rigidity with a displacement of 10 mm or more: 6.4 kN / mm
(3) Sliding resistance: 64 kN

(Discussion of experimental results)
As shown in FIG. 4, when the rod end 130 of the vibration control device 1 is vibrated with a sine wave having a stroke of ± 10 mm, the viscoelastic bodies 218 and 228 are sheared and deformed without the slider plates 214 and 224 being displaced. It is considered that the damping force is dominated by the characteristics of the viscous elastic bodies 218 and 228, but the characteristic of the vibration control device 1 of the present embodiment is that the conventional building oil damper does not have the viscous elastic bodies 218 and 228. It showed higher rigidity and damping than the characteristics of a single unit.

Further, as shown in FIG. 5, when the rod end 130 of the vibration control device 1 is vibrated with a sine wave having a stroke of ± 20 mm, the slider plates 214 and 224 are displaced, so that the damping force is applied to the slider plates 214 and 224. It is considered that the characteristics due to the frictional force and the damping force of the oil damper 110 are dominant, but the characteristic of the vibration control device 1 of this embodiment is that of the conventional building oil damper alone which does not have the slider plates 214 and 224. It showed higher rigidity and damping than the characteristics.

Further, as shown in FIG. 6, when the rod end 130 of the vibration control device 1 is vibrated by a random wave having a stroke of ± 20 mm, the slider plate 214 and 224 are randomly displaced and not displaced. It can be seen that it exhibits the same followability as a conventional building oil damper that does not have the viscoelastic bodies 218 and 228 and the slider plates 214 and 224. Further, it can be seen that the damping force of the vibration control device 1 far exceeds the damping force of the conventional building oil damper.

From the above, the vibration control device 1 of the present embodiment has an extremely high damping force as compared with the conventional building oil damper, and by applying this to the structure S, the structure S Will have sufficient seismic and seismic control functions.

The above is the description of the embodiment of the present invention, but the present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made within the scope of the technical idea thereof. For example, the viscoelastic bodies 218 and 228 of the present embodiment have been described as being α-gel (registered trademark), but any gel-like substance having a predetermined elastic force can be applied.

Further, the vibration control device 1 of the present embodiment is in a frame surrounded by two adjacent columns P1 and P2 of the structure S, and lower floor beams L1 and upper floor beams L2 adjacent to each other in the vertical direction. That is, although it has been described as being arranged in a bracing shape on the frame surface VP), it is not necessarily limited to such a configuration, and one end of the vibration control device 1 (that is, a pair of joints 122 of the load column 120, 124) is rotatably connected (or fixed) to one part of the frame and the other end (ie, a pair of joints 132, 134 of the rod end 130) is rotatably connected (or fixed) to the other part of the frame. ) Should be done.

Further, the vibration control device 1 of the present embodiment has been described as having an oil damper 110 filled with oil 116, but the present invention is not necessarily limited to such a configuration, and instead of the oil 116, another It is also possible to apply a fluid damper filled with working fluid.

(Summary of Examples of Embodiments of the Present Invention, Actions, and Effects)
The vibration control device (vibration control device 1) according to the first aspect is a vibration control device that is interposed in the frame (structure surface VP) of the structure (structure S) to reduce the shaking of the structure due to an external force. One end (road column 120) is fixed to a part of the structure (lower floor beam L1), and the other end (rod end 130) is fixed to the other part of the structure (upper floor beam L2) against external force. It is provided in parallel with the seismic control device between one end and the other end of the seismic control device (seismic control device 100) that generates damping force, and responds to the relative displacement of one end and the other end. A spring mechanism (viscous elastic body 218, 228) that generates a resistance force against an external force, and when a predetermined stress is generated in the spring mechanism, the spring mechanism is slid with respect to the seismic control device to generate an external force. On the other hand, a sliding mechanism (slider plate 214, 224) that generates a frictional force is provided.
According to such a configuration, the seismic function is exhibited by the viscous resistance of the spring mechanism against a small amplitude external force, and the frictional force of the sliding mechanism and the damping of the seismic control device against a large amplitude external force. The seismic control function is exerted by the force. Therefore, according to the vibration control device of this embodiment, it is possible to accurately control the vibration of the structure regardless of the magnitude of the vibration energy.
Further, in this embodiment, a spring mechanism having a seismic resistance function, a sliding mechanism having a vibration control function, and a vibration control device are integrally configured. Conventionally, when both a reinforcing material that increases the rigidity of a structure and improves seismic function and a seismic control device that reduces the shaking of the structure are installed, both are separate members. It was necessary to arrange them on different structures, which led to an increase in construction sites and construction costs, and a decrease in convenience due to a decrease in openings due to the installation of each member. According to this aspect, one vibration control device may be arranged for one structural surface, and the structure can be applied to a structure having a narrow column spacing or beam spacing (that is, a narrow structural surface).
Further, according to this aspect, when a predetermined stress is generated in the spring mechanism, the spring mechanism slides with respect to the vibration control device, so that the spring mechanism does not shear. Therefore, unlike conventional trigger members, replacement parts are not required, and sufficient seismic resistance and damping functions are exhibited even against further aftershocks.

The vibration control device according to the second aspect is characterized in that the spring mechanism has a viscoelastic body (viscoelastic body 218, 228) that deforms according to the relative displacement of one end and the other end.
According to such a configuration, the spring mechanism can be realized with a simple configuration by utilizing the viscous resistance of the viscoelastic body.

The vibration control device according to the third aspect is characterized in that the viscoelastic body is a gel-like substance.
According to such a configuration, a predetermined resistance force can be easily obtained by utilizing the viscous resistance of the viscoelastic body.

In the vibration control device according to the fourth aspect, a pair of first plates (slider) in which spring mechanisms are arranged in parallel with each other so as to sandwich the vibration control device and a base end portion is attached to one end side of the vibration control device. A pair of second plates (frame plates) arranged close to each first plate so as to face each first plate and having a base end portion fixed to the other end side of the vibration control device. The viscoelastic body has 216, 226) and is adhered to each first plate and a second plate adjacent to each first plate and is held in a narrow position, depending on the relative displacement of one end and the other end. It is characterized by shear deformation.

The vibration control device according to the fifth aspect of the present invention is characterized in that the sliding mechanism is arranged on one end side of the vibration control device and has a pair of support members that slidably support the pair of first plates.

The vibration control device according to the sixth aspect of the present aspect is characterized in that the vibration control device generates a damping force when the spring mechanism slides with respect to the vibration control device.

In the vibration control device according to the seventh aspect, the vibration control device has a cylinder, a piston rod inserted into the cylinder, and one end fixed to the other end of the vibration control device, and the inside of the cylinder into two liquid chambers. It comprises a piston that moves in the cylinder with the movement of the piston rod as well as a partition and a working liquid that fills the two liquid chambers, and the piston has an orifice through which the working liquid passes when the piston moves. It is characterized by.

It should be noted that the embodiments disclosed this time are examples in all respects and should not be considered to be restrictive. The scope of this aspect is indicated by the scope of claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 ... Vibration control device, 100 ... Vibration control device, 110 ... Oil damper, 111 ... Cylinder, 111a, 111b ... Liquid chamber, 112 ... Piston rod, 114 ... Piston, 114a ... Coupling, 116 ... Oil, 120 ... Road column, 122, 124, 132, 134 ... Joint, 130 ... Rod end, 210, 220 ... Support member, 210a, 220a ... Flat surface, 212, 222 ... Bolt, 213, 223 ... Nut, 214, 224 ... Slider plate, 214a, 224a ... long hole, 216, 226 ... frame plate, 218, 228 ... viscoelastic body

Claims (6)

A vibration control device that is placed inside the frame of a structure and reduces the shaking of the structure due to an external force.
A seismic control device in which one end in the axial direction is connected to a part of the frame and the other end in the axial direction is connected to the other part of the frame to generate a damping force in the axial direction with respect to the external force.
A spring mechanism provided in parallel with the vibration control device and generating a resistance force in the axial direction to the external force according to the relative displacement between the one end and the other end.
A sliding mechanism that slides the spring mechanism in the axial direction with respect to the vibration control device when a predetermined stress is generated in the spring mechanism .
When the external force of a magnitude that does not operate the sliding mechanism is applied, the vibration is reduced by the resistance force of the spring mechanism, and when the external force of a magnitude that the sliding mechanism operates is applied. A vibration control device characterized in that the vibration is reduced by the frictional force of the sliding mechanism and the damping force of the vibration control device. The seismic control device includes a joint that projects outward from one end surface in the axial direction and is connected to a part of the frame, a rod end that is arranged at the other end in the axial direction, and the like. The external force projects from the other surface of the rod end in the axial direction and has another joint connected to the other part of the frame, and operates in the compression direction or the extension direction along the axial direction. Generates damping force against
The spring mechanism has a first plate having a base end attached to the sliding mechanism and a second plate having at least a part facing the first plate and having a base end fixed to the rod end. When the fixed to the opposed surfaces of the first plate and the second plate, have a viscoelastic material that deforms in response to the relative displacement of said other end and said one end,
The sliding mechanism includes a support member having a flat surface portion that is partially fixed to the outer peripheral surface of one end portion of the vibration control device and slidably supports the first plate in the axial direction. The vibration control device according to claim 1, wherein the vibration control device is provided in parallel with the vibration control device and in series with the spring mechanism . The vibration control device according to claim 2, wherein the viscoelastic body is a gel-like substance. The spring mechanism
A pair of first plates disposed parallel to each other across the vibration control device,
A pair of said second plate, wherein at least a portion between each first plate is arranged to face,
And a pair of the viscoelastic body fixed to a portion of the second plate facing front SL in the first plate and the respective first plate,
2. Or 3 according to claim 2 , wherein the sliding mechanism includes a pair of the supporting members that slidably support each of the first plates by projecting from the outer peripheral surface of the vibration control device in opposite directions. The vibration control device according to. The vibration control device divides the inside of the cylinder into two liquid chambers, the cylinder, a piston rod inserted into the cylinder and one end fixed to the rod end , and the piston rod moves as the piston rod moves. comprising a piston which moves within a cylinder, and a hydraulic liquid filling the two liquid chambers, said piston, according to claim 2, characterized in that it comprises an orifice which the working liquid to pass through when said piston moves The vibration control device according to any one of 4 to 4 . The vibration control device is
A load column arranged on one end side in the axial direction, the one joint projecting from one end surface in the axial direction, and the support member fixed to the outer peripheral surface.
A claim characterized by having a piston rod arranged on the other end side in the axial direction and having the other end portion in the axial direction joined to a rod end, and an oil damper arranged coaxially with the load column. Item 2. The vibration control device according to any one of Items 2 to 5.

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