JP2005331035A - Seismic response control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seismic response control device for improving damping capacity of vibration by restraining a slipping phenomenon between a vessel structure and a viscous body. <P>SOLUTION: This seismic response control device is stored via the viscous body inside a fixed part fixed to one of a structure, and has a movable body movably connected to the other of the structure, and is characterized by preventing slipping between the viscous body and respective surfaces by including a resistance element in at least one area of an inner surface of the fixed part and an outside surface of the movable part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a building structure using a viscous damping device, and more particularly to a viscous damping device that prevents a decrease in vibration damping capability due to slippage of a viscous body and a container structure.

  Technologies that have been developed from the viewpoint of seismic design include space unit seismic isolation bearings, viscous damper supports, brace dampers, flexible seismic walls including slit seismic walls, and steel plate built-in RC seismic walls.

  In particular, in order to realize a high-rise building, it is essential to improve the deformation capacity of the earthquake-resistant wall, and many flexible earthquake-resistant walls have been proposed. The purpose is to increase the deformation capacity of the seismic wall to resist the seismic force in cooperation with the frame structure with low rigidity and large deformation capacity, and to increase the rigidity of the building structure appropriately. It is.

  However, the seismic elements in the conventional seismic design are frame structures, seismic walls, brace structures, etc. The essence is that the horizontal resistance is generated only when the structural elements undergo horizontal deformation. Moreover, in the event of a large earthquake, the resistance force is insufficient within the elastic deformation of these seismic elements. Therefore, the plasticization is allowed, and the basic idea is to endure the earthquake energy by the energy absorption ability in the plastic region. Seismic design is being carried out. Needless to say, this is based on the premise that the building structure will be considerably damaged during a major earthquake.

  Another problem with conventional seismic design is that even if well-designed building structures can withstand a large earthquake, these buildings experience very high horizontal acceleration during the duration of the ground motion. It is very likely that This means that even if the building structure is not damaged, the equipment of the furniture in the building falls, a falling object occurs, and a disaster such as a collision between a person and an object occurs. It means that the risk is extremely high.

  On the other hand, there has also been proposed a structure in which a vibration damping device in which a viscous material is interposed between resistance plates made of steel plates is incorporated between decorative members of a structure. The above device is supported by brace or hanging wall and waist wall-like mounting members in a space surrounded by left and right columns and upper and lower beams, and generates resistance in the direction along the plate surface due to viscous shear force resistance of viscous material This is to dampen vibration.

  The damping wall suppresses the displacement between the upper and lower floors that occurs in the building during an earthquake or wind due to the viscous force of the viscous material. Blocked by R, R is transmitted from the beam to the column. If this R is large, it becomes difficult to design the beam.

  Therefore, in the normal case, the damping walls on each floor are arranged in a staggered manner so that Rs cancel each other. However, even if the central Rs are canceled, the end Rs still remain. The greater the force that the damping wall bears, the greater the damping effect, but naturally the R becomes large, and if the damping wall has three inner steel plates, the design of the beam becomes extremely difficult.

  High-rise buildings and observation towers are structures that have a long natural period, which is the period of free vibration of a vibrating body, and have low rigidity. Therefore, not only earthquake motion but also wind vibration is an important issue. . There are various techniques for reducing the shaking of a reinforced concrete building such as an earthquake. For middle- and low-rise buildings, a method of insulating earthquake energy with laminated rubber and a method of reducing vibration by absorbing viscous energy according to deformation of the building by installing viscous dampers and steel dampers in the frame . In high-rise buildings, it is common to secure earthquake resistance by making columns and beams strong with high-strength reinforcing bars and high-strength concrete, or by installing earthquake-resistant walls, but that makes columns and beams thicker. The installation of the opening may be limited by providing a seismic wall. In recent years, the development of high-strength concrete has increased the number of high-rise buildings for reinforced concrete housing, and there is a need for a vibration control device that effectively suppresses wind-swing to large earthquakes with little impact on floor plans and floor plans. ing.

  In general, the damping mechanism is mounted between two points (objects) that are relatively displaced, and achieves a damping effect by converting the vibration energy transmitted from one vibration source side to the other damping object side and converting it into thermal energy. It is configured to

  However, a general normal damping mechanism achieves a damping effect through its viscous frictional resistance by accommodating a relative displacement portion generated by vibration in a viscous body chamber formed in the apparatus. Further, in this case, the displacement amount of the relative transition portion is configured to be amplified via the amplifying means from the actual displacement amount (the displacement amount between the two relatively displaced points). Accordingly, the damping effect can be increased.

  For a damping device using a viscous body, Patent Document 1 discloses a damping device using a damping rod.

  FIG. 1 shows a viscous damping wall 2. A resistance plate made of a steel plate, that is, a vibration damping device in which a viscous body 4 is filled between outer wall steel plates 8 fixed to the lower beam is incorporated between decorative members of the structure, and is suspended from the upper beam. The inner wall steel plate 6 is inserted into the viscous body 4, and the device is supported by the hanging wall, that is, the inner wall steel plate 6 in the space surrounded by the left and right columns and the upper and lower beams, and the viscous shear force resistance of the viscous body 4 Thus, a resistance force is generated in the direction along the plate surface to attenuate the vibration (Patent Document 2).

  FIG. 2 shows an example of a conventional attenuation top which is an attenuation device connected by a clevis.

  The damping top is composed of first and second clevises 20 and 22 that are connected to each other so as to connect two points (objects) A and B that are relatively displaced. Are fixed to one of the two points 24 and 26, respectively, and the first clevis 20 is formed with a guide screw portion 28 on its connecting side, and a ball bearing 30 is mounted on the screw portion 28. A rotating inner cylinder 34 that is driven by a guide nut 32 that is screwed through is inserted in a slidable manner, and a second clevis 22 is formed in the fixed outer cylinder 38, and in the chamber 36 The damping viscous body and / or the viscoelastic body 40 is filled. Here, the rotating inner cylinder 34 is composed of a closed cylinder whose other end is extrapolated to the guide nut 32, and a fixed outer cylinder 38 at one side of the guide nut 32 and the closed end of the rotating inner cylinder 34. The ball bearings 42 and 44 are disposed on both the upper and lower contact surfaces with respect to the guide screw portion 28 on the guide screw portion 28 corresponding to both compression and tension loads generated from the relative displacement between the two points 24 and 26, respectively. It is pivotally supported so as to rotate and slide in the vertical direction in the figure.

  However, these viscous damping walls and damping top techniques have the following problems. As shown in FIG. 3, a viscous damping wall will be described as an example. In an apparatus intended to absorb energy by the shear resistance force of the viscous body 56, when the inner wall steel plate 52 moves, the viscous body 56 in the vicinity thereof also moves. Since the outer wall steel plate 54 is fixed, the viscous body 56 in the vicinity thereof does not move. The resistance increases as the moving speed of the viscous body 56 increases. However, when the moving speed reaches a certain value, the container structure that encloses the viscous body 56, that is, slips between the inner wall steel plate 52 and the outer wall steel plate 54 and the viscous body 56. A phenomenon occurs and the resistance begins to decrease. As a result, the vibration damping capability decreases. This phenomenon is the same even in the case of a damping top, but when the viscous body 56 is sheared and deformed at a very high speed by an amplification mechanism as in the case of the damping top, the slip between the container structure and the viscous body 56 significantly increases the energy absorption capacity. There is a possibility of lowering. Because of this phenomenon, there is a possibility that the ability to attenuate vibrations may be limited in viscous damping devices such as viscous damping walls and damping tops.

Japanese Patent No. 3408706 JP 2000-27485 A

  Accordingly, an object of the present invention is to develop a vibration control device that suppresses the slip phenomenon between the viscous body and the container structure, improves the vibration energy absorption capability, and effectively attenuates the vibration.

  In the present invention, in order to solve the problem of reduction in vibration energy absorption capacity due to the slip phenomenon between the container structure of the viscous damping device and the viscous body, the outer wall steel plate and inner wall steel plate are used for the viscous damping wall, In addition, it has been proposed that the container structure including the inner cylinder is subjected to a protrusion or a roughening treatment. This suppresses the slip phenomenon between the container structure and the viscous body and prevents the energy absorption capacity from being lowered. In the case of a viscous damping wall, the damping capacity is improved by resistance by a protrusion other than the conventional shear resistance.

  According to a first aspect of the present invention, there is provided a vibration control device including a movable portion that is accommodated in a fixed portion fixed to one of the structures via a viscous body and is movably connected to the other of the structure. A resistance element is included in at least one region of the inner surface and the outer surface of the movable portion to prevent slippage between the viscous material and each surface.

  The invention according to claim 2 is an inner wall steel plate fixed to an upper floor horizontal structural member, the hanging portion extending vertically downward and movably connected to the other of the structure, and a lower floor horizontal structural member In the vibration control device, which is composed of an outer wall steel plate that is fixed to the upper wall and is opened upward and the inner wall steel plate is inserted in a non-contact state, and a viscous body that is injected into the outer wall steel plate, A resistance element is included in at least one region of the inner surface of the surface to prevent slippage between the viscous body and each surface.

  According to a third aspect of the present invention, there are provided first and second connecting members connected to each other so as to connect two relatively displaced points, a guide screw portion formed on a connection side of the first connecting member, A guide nut that is screwed onto the guide screw portion via a first plurality of ball bearings, and is rotationally driven via the guide nut and is slidably inserted into the first connecting member. A rotating inner cylinder, a closed end formed on one end of the rotating inner cylinder and covering the guide nut, and a contact surface between the guide nut and the closed end covering the guide nut, The guide nut is provided on two contact surfaces that are separated from each other along the longitudinal axis of the first and second connecting members, and corresponds to both compression and tension loads generated from relative displacement between two points. The guide nut is pivotally supported so as to be able to rotate and slide on the guide screw portion. A fixed outer cylinder provided on the connection side of the second and third ball bearings and the second connecting member, and forming a chamber for accommodating the rotating inner cylinder; and the chamber of the fixed outer cylinder is filled. A damping device comprising a viscoelastic body or a viscous body acting as a viscous fluid, wherein the rotating inner cylinder is formed of a closed end hollow cylinder, and the viscoelastic body or the viscous body is the closed end hollow cylinder. In the damping device configured such that the viscoelastic body or the viscous body is in contact with the outer surface of the closed end hollow cylinder by being filled in a gap between the outer surface of the fixed outer cylinder and the inner surface of the fixed outer cylinder. A resistance element is included in at least one region of the outer surface of the hollow cylinder and the inner surface of the fixed outer cylinder to prevent slippage between the viscous material and each surface.

  According to a fourth aspect of the present invention, there are provided first and second connecting members connected to each other so as to connect two relatively displaced points, a guide screw portion formed on a connection side of the first connecting member, A guide nut that is screwed onto the guide screw portion via a first plurality of ball bearings, and is rotationally driven via the guide nut and is slidably inserted into the first connecting member. A rotating inner cylinder, a closed end formed on one end of the rotating inner cylinder and covering the guide nut, and a contact surface between the guide nut and the closed end covering the guide nut, The guide nut is provided on two contact surfaces that are separated from each other along the longitudinal axis of the first and second connecting members, and corresponds to both compression and tension loads generated from relative displacement between two points. The guide nut is pivotally supported so as to be able to rotate and slide on the guide screw portion. A fixed outer cylinder provided on the connection side of the second and third ball bearings and the second connecting member, and forming a chamber for accommodating the rotating inner cylinder; and the chamber of the fixed outer cylinder is filled. A damping device comprising a viscoelastic body or a viscous body acting as a viscous fluid, wherein the rotating inner cylinder is formed from an open end hollow cylinder, and the viscoelastic body or the viscous body is the open end hollow cylinder. The viscoelastic body or the viscous body is filled in the gap between the outer side surface of the fixed outer cylinder and the inner side surface of the fixed outer cylinder, and is also filled in the inner hollow portion of the open end hollow cylinder. In the damping device configured to be in contact with both the outer side surface and the inner side surface of the body, a resistance element is included in at least one of the outer side surface of the hollow cylindrical body and the inner side surface and the inner side surface of the fixed outer cylinder. Sliding between viscous body and each surface Characterized in that it prevented. Here, the viscoelastic body may be, for example, a synthetic rubber.

  The invention according to claim 5 is characterized in that the resistance element is composed of interspersed protrusions. Here, the resistance element may be a conical protrusion or a bolt, and is provided on at least one of the inner surface of the fixed portion and the outer surface of the movable portion.

  The invention according to claim 6 is characterized in that the resistance element comprises a protrusion extending linearly in a direction not parallel to the moving direction of the movable portion. Here, the resistance element may be a triangular prism-shaped protrusion, and is provided on at least one of the inner surface of the fixed portion and the outer surface of the movable portion so that the side surface of the triangular prism-shaped protrusion is bonded to the surface of the movable portion. .

  The invention according to claim 7 is characterized in that the resistance element comprises a protrusion extending in a planar shape. Here, the resistance element may be configured by performing a roughening process on at least one of the inner surface of the fixed portion and the outer surface of the movable portion, or a striped steel plate may be provided.

  The invention according to claim 8 is characterized in that the resistance element is formed of scattered concave portions. Here, the resistance element may be provided with a conical recess on at least one of the inner surface of the fixed portion and the outer surface of the movable portion.

  The invention according to claim 9 is characterized in that the resistance element is composed of a concave portion extending linearly in a direction not parallel to the moving direction of the movable portion. Here, the resistance element may be provided with a wedge-shaped groove on at least one of the inner surface of the fixed portion and the outer surface of the movable portion.

  The invention according to claim 10 is characterized in that the resistance element is formed of a concave portion extending in a planar shape. Here, the resistance element may be configured by performing shot blasting on at least one of the inner surface of the fixed portion and the outer surface of the movable portion.

  By providing protrusions on the container structure of the viscous vibration control device, applying a roughening treatment or shot blasting treatment, or making the surface of the container structure a striped steel plate, the contact area between the viscous material and the container structure increases, and resistance is increased. Thus, even if the moving speed of the viscous body is increased during vibration, the occurrence of the slip phenomenon can be suppressed, and the vibration energy absorbing ability can be improved. In addition, since the protrusion protrudes perpendicularly to the moving direction of the viscous material, it will be caught when the viscous material moves, so the slip phenomenon between them can be suppressed and the vibration energy absorption capacity can be prevented from being lowered. Can do. Furthermore, the slip phenomenon of the viscous body can be further suppressed by providing the protruding portions facing each other alternately. In addition, in the case of a viscous damping wall, the damping capability can be improved by resistance by a protrusion in addition to the conventional shear resistance. As a result, it is possible to provide a vibration control device that can effectively absorb vibration energy, significantly reducing the energy applied to the building during an earthquake and minimizing damage and destruction of the building. It is thought that you can.

  The viscous vibration control device according to the present invention will be described with reference to FIGS. FIG. 4 is a configuration diagram of a viscous damping wall obtained by subjecting the surface of the viscous damping wall according to the present invention to projection processing, and FIG. 5 illustrates a viscosity obtained by subjecting the surface of the viscous damping wall according to the present invention to projection processing. It is sectional drawing of a damping wall. FIG. 6 is a configuration diagram of an attenuation top obtained by subjecting the surface of the attenuation top according to the present invention to projection processing, and FIG. 7 is a cross-sectional view of the attenuation top obtained by performing projection processing on the surface of the attenuation top according to the present invention. .

  In FIG. 4, protrusions 74 are provided on the inside of the outer wall steel plate 70 of the viscous damping wall 68 according to the present invention and on both sides of the inner wall steel plate 72. The inner wall steel plate 72 has an upper end fixed to the horizontal structural member on the upper floor, and its hanging portion extends vertically downward and is movably connected to the outer wall steel plate 70. The outer wall steel plate 70 is fixed to the horizontal structural member on the lower floor and opens upward, and is composed of an outer wall steel plate 70 into which the inner wall steel plate 72 is inserted in a non-contact state and a viscous material injected into the outer wall steel plate 70. . In order to simplify the drawing, the viscous body is not shown here. As a result, the contact area between the viscous body and the outer wall steel plate 70 and the inner wall steel plate 72 is increased, the resistance is increased, and the occurrence of a slip phenomenon is suppressed even when the moving speed of the viscous body is increased during vibration. can do. In addition, the damping capability can be improved by the resistance by the protrusions other than the conventional shear resistance.

  FIG. 5 is a cross-sectional view of the viscous damping wall 80 subjected to the protrusion treatment, in which the positions of the protrusions 86 of the outer wall steel plate 82 and the inner wall steel plate 84 facing each other are shifted. Thereby, the resistance between the viscous body and the container surface can be further increased.

  6, projections 102 are provided on the surfaces of the inner cylinder and the outer cylinder 124 of the cylinder type damping top 100 according to the present invention. The cylinder type attenuation top 100 includes a speed amplification unit 136, a transmission unit 138, and an attenuation unit 140. A guide screw portion 114 having a thread groove formed therein is inserted into the speed amplifying portion 136 from its end, and is screwed with a guide nut 118 via a ball bearing 116 of a linear bearing. The guide nut 118 is speed-amplified. It is joined to the outer cylinder 132 of the part 136 through a thrust bearing so as to be rotatable. The guide nut 118 is joined to the rotating inner cylinder 120 in the transmission unit 138 and rotates in the damping unit 140. A viscous body 126 is sealed between the outer cylinder 124 and the rotating inner cylinder 120 of the damping section 140 and sealed with a seal 128 at the end of the outer cylinder 124, so that the viscous body 126 does not leak. By providing the protrusion 102 on this, it is possible to increase the resistance when the inner cylinder rotates and the viscous body 126 starts to move during vibration, thereby improving the vibration energy absorption capability. Become.

  7 is a cross-sectional view of the inner cylinder 154 and the outer cylinder 152 of the cylinder type damping top 150 shown in FIG. Protrusions 158 are provided on the inner surface of the outer cylinder 152 and the outer surface of the inner cylinder 154. When the inner cylinder 154 rotates, the viscous body 156 existing between the outer cylinder 152 and the inner cylinder 154 tends to move in accordance with the rotation of the inner cylinder 154 near the inner cylinder 154 surface. The viscous body 156 tries to remain stationary like the outer cylinder 152. As a result, resistance of the viscous body 156 is generated to absorb vibration energy. The resistance increases as the speed of the viscous body 156 near the surface of the inner cylinder 154 increases, but when the speed reaches a certain speed, the viscous body 156 begins to slide and the resistance decreases, and the damping capacity also decreases. By providing the protrusions 158 on the surfaces of the outer cylinder 152 and the inner cylinder 154, it is possible to prevent the viscous body 156 from slipping due to being caught by the protrusion 158 when the viscous body 156 starts to slide.

  The protrusion structure may be attached to the surface of the outer wall steel plate and the inner wall steel plate, or the outer cylinder and the inner cylinder, or cut into the linear protrusions. A shape with a mark may be used. Thereby, the contact area between the viscous body and the container structure can be increased, and the slip phenomenon can be suppressed.

  FIG. 8 shows an example applied to another cylinder type damping top 160 according to the present invention. The feature of this cylinder type damping top 160 is that the viscous body is also inserted into the inner tube in order to increase the contact area with the viscous body.

  Another cylinder-type damping top 160 according to the present invention comprises first and second clevises 20 and 22 connected to each other so as to connect two points (objects) A and B that are relatively displaced. 20 and 22 each fix one end to one of the two points 24 and 26, respectively, and the first clevis 20 forms its connecting side on a guide screw 28 and this screw A rotating inner cylinder 166 that is driven by a guide nut 162 that is screwed through a ball bearing 32 is inserted on 28 so as to be slidable. The guide nut 162 is provided with bearings 42 and 168 so as to be rotatable at both upper and lower contact surfaces with the upper outer tube. The second clevis 22 is formed in the fixed outer cylinder 38, and the fixed outer cylinder 38 is configured to be filled with a damping viscous body and / or a viscoelastic body 40. Here, one end of the rotating inner cylinder 166 is attached to the guide nut 162, and on the guide screw portion 28 corresponding to both compression and tension loads generated from the relative displacement between the two points 24 and 26. It is pivotally supported so as to rotate and slide in the vertical direction in the figure.

  The resistance element 163 is provided on the outer side surface of the rotating inner cylinder 166, the resistance element 166 is provided on the inner side surface, and the resistance element 161 is also provided on the inner side surface of the outer cylinder tube 38. It is possible to prevent the damping viscous body and / or the viscoelastic body 40 from being slipped by being caught by the protrusions 161, 163, and 165 when the 40 starts to slide.

  Moreover, what attached the small conical protrusion 174 to the surface of many outer wall steel plates and inner wall steel plates, or the outer cylinder and the inner cylinder at predetermined intervals may be used. FIG. 9 shows a schematic view when the outer wall steel plate 170 and the inner wall steel plate 172 are provided with conical protrusions 174. For simplification of the drawing, only one side of the outer wall steel plate 170 is shown from the outer side, and the inner wall steel plate 172 shows a state in which the protrusions 174 are provided only on one side. Thereby, the contact area between the viscous body and the container structure can be increased, and the slip phenomenon can be suppressed.

  A shape in which a large number of bolts protrude from the surfaces of the outer wall steel plate and the inner wall steel plate, or the outer cylinder and the inner cylinder at a predetermined interval may be employed. FIG. 10 shows a schematic diagram when the outer wall steel plate 180 and the inner wall steel plate 182 are provided with bolts. For simplification of the drawing, only one side of the outer wall steel plate 180 is shown, and a state in which the bolt 186 is inserted from the outer side surface is shown, and the inner wall steel plate 182 shows a state in which the bolt 184 protrudes only on one side. Thereby, the contact area between the viscous body and the container structure can be increased, and the slip phenomenon can be suppressed.

  Furthermore, the protrusions 194 and 204 having the above shapes are provided on the outer wall steel plate and the inner wall steel plate, or on the surfaces of the outer cylinder and the inner cylinder so as to face each other. Here, the outer wall steel plates 190 and 200 and the inner wall steel plates 192 and 202 are schematically shown. As shown in FIG. 11 (a), the protrusions 194 facing each other may be provided so as to face each other, and as shown in FIG. 11 (b), the protrusions 204 facing each other are staggered. It may be arranged. In order to increase the resistance of the viscous body and improve the vibration energy absorption capability, it is more preferable to alternately arrange the protrusions 204 facing each other as shown in FIG.

  In FIG. 12, as an example in which the resistance element is formed of a protruding portion extending linearly, a linear protruding portion 224 extending linearly in a wedge shape on the surface of the outer wall steel plate 220 and the inner wall steel plate 222 is provided. An example is shown. The linear protrusions 224 are provided so that their side surfaces are bonded to the surfaces of the outer wall steel plate 220 and the inner wall steel plate 222, and extend linearly in a direction that is not parallel to the moving direction of the inner wall steel plate 222 (the direction of the arrow). . Like FIG.11 (b), it is more preferable that the protrusion part which faced is arrange | positioned alternately.

  FIG. 13 shows an example in which the roughening treatment is performed on the surfaces of the outer wall steel plate 230 and the inner wall steel plate 232 as an example in which the resistance elements are formed of protrusions extending in a planar shape. The surface 234 that has been subjected to the roughening treatment becomes rough, and the contact area between the viscous body and the surface 234 increases, and resistance increases when the viscous body moves, so that the slip phenomenon of the viscous body can be suppressed. Become.

  FIG. 14 shows an example in which the surface of the outer wall steel plate 240 and the inner wall steel plate 242 is a striped steel plate 244 as another example in which the resistance element is formed of a protrusion extending in a planar shape. By using a striped steel plate 244 for the surface, it is possible to realize a surface that is bumpy but has good wear resistance and a large anti-skid effect in any direction. Since the contact area between the viscous body and the surface increases due to the unevenness of the surface and the viscous body moves, the resistance increases, so that the slip phenomenon of the viscous body can be suppressed.

  FIG. 15 shows an example in which conical recesses 254 are provided at predetermined intervals on the surfaces of the outer wall steel plate 250 and the inner wall steel plate 252 as an example of recesses interspersed with resistance elements. Before the vibration, the viscous body is also filled in the concave portion, which has an effect of suppressing the slip of the viscous body during the vibration.

  FIG. 16 shows an example in which a plurality of wedge-shaped groove portions 264 are provided in parallel to each other on the surfaces of the outer wall steel plate 260 and the inner wall steel plate 262 as an example in which the resistance element is formed of a recess extending linearly. Before the vibration, the viscous body is also filled in the concave portion, which has an effect of suppressing the slip of the viscous body during the vibration.

  FIG. 17 shows an example in which the surface of the outer wall steel plate 270 and the inner wall steel plate 272 is shot blasted as an example in which the resistance element is formed of a concave portion extending in a planar shape. The shot blasting method, in which shots (abrasive grains) are sprayed from a rotating blade at high speed and surface treatment is performed by hammering or machining, the desired surface roughness can be obtained by adjusting the shot injection amount and the machine feed speed. Is possible. By this treatment, a large number of recesses are formed on the surface 274, the contact area between the viscous body and the surface 274 is increased, the resistance is increased, and the viscous body has the effect of suppressing the occurrence of a slip phenomenon during vibration. .

  Here, similarly to the outer wall steel plate and the inner wall steel plate, the outer cylinder, that is, the fixed portion and the inner cylinder, that is, the surface of the movable portion may be formed as shown in FIGS. 9 and 10 and FIGS.

  The viscous vibration control device with projection processing according to the present invention makes it possible to efficiently absorb the energy of earthquakes. Therefore, it is used in vibration control devices using viscous materials and is widely applied to earthquake-resistant design buildings. Can.

It is a schematic diagram which shows the structure of the viscous damping wall of a prior art example. It is a schematic diagram of a conventional cylinder type damping top. It is explanatory drawing which shows the slip phenomenon between the container structure of the viscous damping device of a prior art example, and a viscous body. It is a block diagram of the viscous damping wall where the protrusion concerning this invention was given. It is sectional drawing of the viscous damping wall to which the protrusion process which concerns on this invention was given. It is a schematic diagram of the cylinder type damping top subjected to the projection processing according to the present invention. It is sectional drawing of the cylinder type attenuation | damping top subjected to the projection process which concerns on this invention. It is sectional drawing of the 2nd Example of the cylinder type attenuation | damping top which performed the projection process which concerns on this invention. As an example consisting of projections interspersed with resistance elements according to the present invention, a conical projection is provided on the surface of the outer wall steel plate and the inner wall steel plate, or on the surface of the outer tube and the inner tube at a predetermined interval, and the surface of the vibration control device FIG. As an example consisting of protrusions interspersed with resistance elements according to the present invention, a schematic diagram of the surface of a vibration control device in which bolts are provided at predetermined intervals on the surfaces of an outer wall steel plate and an inner wall steel plate, or an outer tube and an inner tube. is there. FIG. 4A is a cross-sectional view when protrusions facing each other are arranged on the surface subjected to the protrusion treatment according to the present invention, and FIG. 5B is a cross-sectional view when they are alternately arranged. As an example in which the resistance element according to the present invention is composed of protrusions extending linearly, a schematic diagram of the surface of a vibration control device in which triangular columnar protrusions are provided at predetermined intervals on the surfaces of an outer wall steel plate and an inner wall steel plate. is there. It is the schematic diagram of the surface of the damping device which performed the roughening process to the surface of the outer wall steel plate and the inner wall steel plate as an example which the resistance element which concerns on this invention consists of a protrusion extended in planar shape. It is a schematic diagram of the surface of the damping device which made the surface of an outer wall steel plate and an inner wall steel plate the striped steel plate as an example which consists of the protrusion which the resistance element which concerns on this invention extends in planar shape. It is a schematic diagram of the surface of the damping device which provided the conical recessed part in the surface of the outer wall steel plate and the inner wall steel plate with the predetermined space | interval as an example which consists of the recessed part in which the resistance element which concerns on this invention is scattered. FIG. 4 is a schematic diagram of the surface of a vibration control device in which a plurality of wedge-shaped grooves are provided in parallel to the surfaces of an outer wall steel plate and an inner wall steel plate as an example in which a resistance element according to the present invention is formed of a concave portion extending linearly. It is the schematic diagram of the surface of the damping device which performed the shot blast process on the surface of the outer wall steel plate and the inner wall steel plate as an example which the resistance element which concerns on this invention consists of a recessed part extended in planar shape.

Explanation of symbols

2 Viscous damping wall 4 Viscous body 6 Inner wall steel plate 8 Outer wall steel plate 20 First clevis 22 Second clevis 24, 26 Fixing point 28 Guide screw 30 Ball bearing 32 Guide nut 34 Rotating inner cylinder 36 Chamber 38 Fixed outer cylinder 40 For damping Viscous body and / or viscoelastic body 42, 44 Ball bearing 52 Inner wall steel plate 54 Outer wall steel plate 56 Viscous body 68 Viscous damping wall 70 Outer wall steel plate 72 Inner wall steel plate 74 Projection 80 Viscous damping wall 82 Outer wall steel plate 84 Inner wall steel plate 86 Projection 100 Cylinder Type damping top 102 Protrusion 114 Guide screw part 116 Ball bearing 118 Guide nut 120 Rotating inner cylinder 124 Outer cylinder 126 Viscous body 128 Seal 136 Speed amplifying part 138 Transmission part 140 Attenuating part 150 Cylinder type damping top 152 Outer cylinder 154 Inner cylinder 156 Viscosity Body 158 Protrusion 160 Cylinder type damping top 161, 16 , 165 Protrusion 162 Guide nut 166 Rotating inner cylinder 168 Bearing 170 Outer wall steel plate 172 Inner wall steel plate 174 Conical protrusion 180 Outer wall steel plate 182 Inner wall steel plates 184, 186 Bolt 190, 200 Outer wall steel plates 192, 202 Inner wall steel plates 194, 204 Protrusion 220 Outer wall Steel plate 222 Inner wall steel plate 224 Linear protrusion 230 Outer wall steel plate 232 Inner wall steel plate 234 Surface subjected to roughening treatment 240 Outer wall steel plate 242 Inner wall steel plate 244 Striped steel plate 250 Outer wall steel plate 252 Inner wall steel plate 254 Conical recess 260 Outer wall steel plate 262 Inner wall steel plate 264 Wedge-shaped groove 270 Outer wall steel plate 272 Inner wall steel plate 274 Shot-blasted surface

Claims (10)

  In a vibration control device including a movable part that is housed in a fixed part fixed to one of the structures via a viscous body and is movably connected to the other of the structure, the inner surface of the fixed part and the movable part A vibration control device comprising a resistance element in at least one region of the outer surface of the slab to prevent slippage between the viscous body and each surface.   An inner wall steel plate that is fixed to the horizontal structural member of the upper floor and whose hanging part extends vertically downward and is movably connected to the other of the structure, and is fixed to the horizontal structural member of the lower floor and opens upward. In a vibration control device comprising an outer wall steel plate into which the inner wall steel plate is inserted in a non-contact state and a viscous body injected into the outer wall steel plate, at least one region of the surface of the inner wall steel plate and the inner surface of the outer wall steel plate A damping device characterized by including a resistance element to prevent slippage between the viscous body and each surface.   First and second connecting members connected to each other so as to connect two relatively displaced points, a guide screw portion formed on a connection side of the first connecting member, and a first on the guide screw portion A guide nut that is screwed through the plurality of ball bearings, a rotary inner cylinder that is rotationally driven through the guide nut and is rotatably inserted into the first connecting member, A closed end formed on one end of the rotating inner cylinder and covering the guide nut; and a contact surface between the guide nut and the closed end covering the guide nut; and the first and second Provided on two contact surfaces separated from each other along the longitudinal axis of the connecting member, the guide nut rotates on the guide screw portion in response to both compression and tension loads generated by relative displacement between two points. Second and third pluralities that pivotally support the guide nut A ball bearing and a fixed outer cylinder that is provided on the connection side of the second connecting member and forms a chamber that houses the rotating inner cylinder, and a viscoelasticity that fills the chamber of the fixed outer cylinder and acts as a viscous fluid The rotating inner cylinder is formed of a closed end hollow cylinder, and the viscoelastic body or the viscous body is connected to an outer surface of the closed end hollow cylinder and the fixed outer body. In the damping device configured so that the viscoelastic body or the viscous body is in contact with the outer surface of the closed end hollow cylinder by filling the gap with the inner surface of the cylinder, the outer surface of the closed hollow cylinder A vibration control device characterized in that a resistance element is included in at least one region of the inner surface of the fixed outer cylinder to prevent slipping between the viscous material and each surface.   First and second connecting members connected to each other so as to connect two relatively displaced points, a guide screw portion formed on a connection side of the first connecting member, and a first on the guide screw portion A guide nut that is screwed through the plurality of ball bearings, a rotary inner cylinder that is rotationally driven through the guide nut and is rotatably inserted into the first connecting member, A closed end formed on one end of the rotating inner cylinder and covering the guide nut; and a contact surface between the guide nut and the closed end covering the guide nut; and the first and second Provided on two contact surfaces separated from each other along the longitudinal axis of the connecting member, the guide nut rotates on the guide screw portion in response to both compression and tension loads generated by relative displacement between two points. Second and third pluralities that pivotally support the guide nut A ball bearing and a fixed outer cylinder that is provided on the connection side of the second connecting member and forms a chamber that houses the rotating inner cylinder, and a viscoelasticity that fills the chamber of the fixed outer cylinder and acts as a viscous fluid A damping device comprising a body or a viscous body, wherein the rotating inner cylinder is formed of an open end hollow cylinder, and the viscoelastic body or the viscous body is connected to an outer surface of the open end hollow cylinder and the fixed outer The viscoelastic body or the viscous body is filled in the gap between the inner surface of the cylinder and the inner hollow portion of the open-end hollow cylinder so that the viscoelastic body or the viscous body is the outer surface and the inner surface of the open-end hollow cylinder. In the damping device configured to be in contact with both of the viscous body and each surface, a resistance element is included in at least one region of the outer surface and the inner surface of the hollow cylinder and the inner surface of the fixed outer cylinder. Features to prevent slipping Vibration control device that.   5. The vibration control device according to claim 1, wherein the resistance element is formed of interspersed protrusions. 6.   5. The vibration control device according to claim 1, wherein the resistance element includes a protrusion extending linearly in a direction not parallel to the moving direction of the movable portion.   5. The vibration control device according to claim 1, wherein the resistance element includes a projecting portion extending in a planar shape.   5. The vibration control device according to claim 1, wherein the resistance element is formed of scattered concave portions.   5. The vibration control device according to claim 1, wherein the resistance element includes a concave portion extending linearly in a direction not parallel to the moving direction of the movable portion.   5. The vibration control device according to claim 1, wherein the resistance element includes a concave portion extending in a planar shape.

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