JP2007211503A - Building vibration control device and building structure - Google Patents

Abstract

Disclosed is a damping device that acts on a viscous material with no difference in velocity distribution, prevents pressure fluctuations, and does not close a hierarchy of damping devices such as damping walls. To provide a vibration control device with a minimum size.
A support leg installed between upper and lower layers of a building structure and having one end connected to one first layer of the upper and lower layers, a resistor connected to the first layer by a first pin, and one end The second pin is connected to the other second layer of the upper and lower layers, and the other end is connected to the resistor and the third pin and is connected to the other end of the support leg and serves as a rotation center. The arm is provided with a support point, and the displacement is amplified by the distance ratio according to the distance from the pin support point to the second pin connection and the distance from the pin support point to the third pin connection. By applying the applied displacement to the resistor, a resistance force related to the distance ratio is generated and applied to the building structure.
[Selection] Figure 1

Description

  The present invention relates to a vibration control device for a building structure, and particularly relates to vibration control for a structure and vibrations such as traffic.

  Generally, when a building vibrates due to an earthquake or the like, it has vibration energy, and if this vibration energy is large, the building may be destroyed.

  By the way, the complete equation of motion of a building structure includes a term representing energy dissipation, that is, a damping force term. This damping force is classified into a viscous damping force and a structural damping force. Therefore, it is possible to further increase the viscous damping force of the building structure to absorb vibration energy and prevent the building from being destroyed.

  This viscous damping force is speed dependent. That is, if the strain rate acting on the viscous material, that is, the strain rate that is the quotient obtained by dividing the velocity by the shear gap increases, a large damping force, that is, a resistance force is generated. Further, if the contact area between the viscous material and the container in contact with the viscous material is increased, a large damping force can be generated.

For example, the graph of FIG. 8 shows the relationship between speed and damping force in an example in which a viscous body is used for the damping wall. FIG. 8 shows a velocity and an area of 1 cm when the frequency is 1 Hz, the gap dy = 5 mm between two kinds of members in contact with each other via a viscous material, the viscosity of the viscous material is μ30, 93,000 poise at 30 ° C., and a temperature of 20 ° C. The relationship of the viscous damping force in ² is shown. The viscous damping force increases in proportion to the speed up to about 20 kin (cm / s) A point, and when the speed exceeds 20 kin, the damping force becomes substantially constant.

  However, even in the case of a large earthquake that can actually occur, the interlayer velocity is only about 10 kine (point B in FIG. 8). That is, even if a large earthquake occurs, the viscous material does not generate the maximum capacity of the damping force.

  For this reason, it has become necessary to increase the damping force by amplifying the interlayer velocity. For example, as a means for amplifying the interlayer velocity, a method using the principle of insulator is proposed in Patent Document 1 by the applicants.

  On the other hand, a damper using a wall damping damper and an insulator principle is also disclosed for interlayer deformation. In particular, a large damping force can be generated by utilizing a large interlayer deformation extending over a plurality of layers.

Japanese Patent No. 1704249 JP 2000-314243 A

  However, in Patent Document 1, the amplified speed acting on the viscous material by the second resistance plate varies depending on the distance from the pin that is the center of rotation. That is, the speed at a point where the distance from the center of rotation is shorter than the distance from the upper floor to the center of rotation is reduced by the lever principle rather than the original interlayer speed. Further, since the speed acting on the viscous material varies depending on the distance from the center of rotation, the damping force at each part is different, and pressure variation occurs in the viscous material. That is, it is necessary to act on the viscous material at the same speed.

  Moreover, in patent document 2, the area | region for two layers is required for each apparatus, and the subject that the apparatus is huge has arisen. Furthermore, although the damping wall is used as the resistor, since the size thereof is large, there is a problem that it is necessary to close all of the two layers.

  Furthermore, the cost of the viscous damping device is determined by the damping force of the resistor. For example, the price of a resistor with a damping force of 100 tons is 3-5 times the price of a resistor with a damping force of 20 tons.

  Further, since the accuracy of the attenuation device increases as the size of the attenuation device before amplification decreases, it is necessary to use an amplification mechanism to obtain a large attenuation force.

  Therefore, in the present invention, the pressure fluctuation is prevented by arranging a damping device that acts on the viscous material with no difference in velocity distribution, and the damping is performed without closing the hierarchy by the damping device such as the damping wall. An object of the present invention is to provide a vibration control device that minimizes the size of the device.

  In order to solve the above-mentioned problems, a building vibration control device according to the present invention includes a support leg that is installed between upper and lower layers of a building structure and has one end connected to one first layer of the upper and lower layers, A resistor having a first pin coupled to one layer, a second pin coupled to the other second layer of the upper and lower layers at one end, and a third pin coupled to the resistor at the other end The arm is provided with a pin support point that is coupled to the other end of the support leg and also serves as a center of rotation. The distance from the pin support point to the second pin connection and the third pin connection from the pin support point. The displacement (velocity) is amplified from the distance ratio depending on the distance to the distance, and the amplified displacement (velocity) is applied to the resistor to generate a resistance force related to the distance ratio and act on the building structure. .

  Further, the pin support point of the arm may be an intersection of the horizontal arm portion and the vertical arm portion, and the arm may be composed of only the vertical arm.

  Further, the building vibration control device according to the present invention is provided between the upper and lower layers of the building structure and has a support leg whose one end is connected to one of the upper and lower layers, and protrudes from the first layer. A resistor horizontally spanned between the two bases and a second pin coupled to the other second layer of the upper and lower layers and a second end intermediate between the resistors. 3 is coupled to the other end of the support leg and is provided with a pin support point that also serves as a rotation center, and the distance from the pin support point to the second pin connection, Amplifying the displacement from a distance ratio depending on the distance from the pin support point to the third pin coupling, and applying the amplified displacement (velocity) to the resistor to generate a resistance force related to the distance ratio. Act on building structures.

  In addition, the joint between the arm and the second layer may be a loose hole, and the support leg may be a brace structure. Further, one of the support legs may be arranged vertically with the upper and lower layers. In addition, the support leg and the resistor are arranged in the same plane by arranging so that the connection point of the support leg and the first layer and the connection point of the resistor and the first layer substantially overlap. Also good. In addition, the resistor may be an oil damper.

  The resistor may be a rotating body that includes an inner ring and an outer ring having different radii on the same axis and whose mass is concentrated on the outer ring from the inner ring.

  Further, the rotating body includes first and second connecting members connected to each other so as to be relatively displaceable. The first connecting member includes at least a first rod having a guide screw portion formed on the connecting side thereof. A guide nut pivotally supported to rotate and slide on the guide screw portion based on a relative displacement with the guide screw portion and a diameter larger than that of the first rod. A cylindrical rotating body having a sufficiently large axial length and inserted so as to be able to rotate and slide through the guide nut, and the second connecting member includes the cylindrical rotating body and the guide nut. A damping device comprising a cylindrical casing to be accommodated, wherein at least a gap between the inner wall of the cylindrical casing and the cylindrical rotating body is filled with a damping viscous body and / or a viscoelastic body.

  Furthermore, the building structure according to the present invention includes a support leg installed between the upper and lower layers of the building structure and connected to one of the upper and lower layers, a resistor connected to the first layer, and one end. Is composed of an arm provided with a pin support point which is pin-coupled to the other second layer of the upper and lower layers and the other end is pin-coupled to the resistor and also serves as a support leg and a rotation center. It is also possible to provide a building vibration control device that amplifies the displacement according to the distance ratio between the two pins and generates a resistance force related to the distance ratio from the amplified displacement and acts on the building structure.

  Hereinafter, embodiments of a vibration control device according to the present invention will be described with reference to FIGS. 1 to 7.

  FIG. 1 is a configuration diagram of a first embodiment of a vibration control device according to the present invention.

  The vibration control device 4 according to the present invention is installed in a frame constituted by a pillar 1 of a building structure and beams 2 and 3. Between the beams 2 and 3, support legs 6a and 6b, damping pieces 8a and 8b, and an arm 18 are arranged.

  The upper ends of the support legs 6a and 6b are connected to the upper beam 2 in a V shape. The damping pieces 8a and 8b are pin-connected to the upper beam 2 at two points by first pins 7a and 7b, respectively. On the other hand, the lower ends of the damping pieces 8a and 8b are pin-coupled by both ends of the arm 18 disposed horizontally with respect to the column and the third pins 12a and 12b. At the center of the arm 18, the lower ends of the support legs 6 a and 6 b are connected to the pin support point 14 so as to be rotatable. The arm 18 extends vertically downward from the pin support point 14, and the lower end is pin-connected to the beam 3 by the second pin 10. A loose hole (pin-roller) is provided so that the opening in the pin coupling 10 can move up and down.

  FIG. 2 shows the attenuation pieces 8a and 8b which are the resistors shown in FIG. 1, and includes a speed amplification unit 30, a transmission unit 32, and an attenuation unit 34. A guide screw portion 36 with a thread groove is inserted into the speed amplifying portion 30 from its end, and is screwed with a guide nut 42 via a ball bearing 40. The guide nut 42 is external to the speed amplifying portion 30. The cylinder 44 and the thrust bearing 46 are joined so as to be rotatable.

  The guide nut 42 is joined to the rotating inner cylinder 48 in the transmission portion 32, and the rotating inner cylinder 48 rotates in the damping portion 34. A viscous body 52 is enclosed between the outer cylinder 50 and the rotating inner cylinder 48 of the attenuation portion 34 and sealed with a seal 54 at the end of the outer cylinder 50, so that the viscous body 52 does not leak. One of the linear shaft 56 and the outer cylinder 50 is pin-joined with the arm 18, and the other is pin-joined with the upper beam 2.

  In such a configuration, when the building vibrates due to seismic force or wind force, the vibration energy (relative velocity generated between the layers) is transmitted from the beam 3 to the arm 18 through the pin coupling 10, and the pin 14 of the arm 18 is transmitted through the pin 14. Amplified by center vibration. The amplification ratio is the ratio of the distance from the pin 14 to the pin 12a or 12b to the distance from the pin 14 to the pin 10. The contraction and expansion effects are produced from the pins 12a or 12b to the damping pieces 8a and 8b. The shaft is supported so as to rotate on the guide screw portion 36 and slide in the vertical direction in the figure in response to both compressive and tensile loads generated from the relative displacement. A simple and small configuration (particularly extending in the longitudinal direction) that converts the linear displacement of the threaded portion into the rotational motion of the rotating inner cylinder, and has an extremely large damping effect compared to this type of conventional device. Can be easily achieved. Here, the obtained viscous damping force acts as a resistance force that is twice the insulator ratio.

  The case where the vibration which generate | occur | produces in an actual earthquake is applied to this invention is demonstrated. Here, the lever ratio, which is the ratio of the distance from the pin 14 to the pin 12a or 12b to the distance 1 from the pin 14 to the pin 10, is set to 5.

FIG. 9 shows that in this case, when an interlayer velocity of 5 kines occurs due to an earthquake, a resistance force of 0.525 kg / cm ² per 1 cm ² occurs when there is no conventional insulator ratio. In the present invention, since the insulator ratio is 5, the speed is amplified to 5 × 5 = 25 kines, and the viscous damping force in the viscous material portion is 1.206 kg / cm ^{2, which} is approximately 2.3 times. Since this viscous damping force becomes a resistance force that is twice the insulator ratio, a resistance force of 1.206 kg / cm ² × 5 = 6.03 kg / cm ² is obtained. Therefore, the resistance is 11 times that of the conventional resistance of 0.525 kg / cm ² .

When the interlayer velocity is 10 kine, the conventional type is 0.8524 kg / cm ² and the present invention does not change the viscous damping force of the viscous material portion to 1.206 kg / cm ^2, and therefore the resistance force is 6.03 kg / cm ² . And the performance is about 7 times that of the conventional system. In order to obtain the same damping force, this makes it possible to manufacture the steel plate area of the inner wall smaller than the performance ratio.

  Alternatively, instead of polyisobutylene, which has been used for damping walls, etc., although the viscosity is high, it is possible to use materials such as silicone, which has a lower viscosity than polyisobutylene but less temperature dependency. Become.

  FIG. 3 is a configuration diagram of a second embodiment of the vibration control device according to the present invention.

  The vibration control device 74 according to the present invention is installed in a frame constituted by the pillar 1 of the building structure and the beams 2 and 3. Between the beams 2 and 3, support legs 76a and 76b, hydraulic dampers 78a and 78b, and an arm 88 are arranged.

  The upper ends of the support legs 76a and 76b are connected to the upper beam 2 in a V shape. On the other hand, foundation parts 79a and 79b are provided on the upper beam 2 so as to protrude vertically downward in the vicinity of both columns. The hydraulic dampers 78a and 78b are inserted between the base portions 79a and 79b so as to project horizontally from the side surfaces of the base portions 79a and 79b, respectively. One end of an arm 88 is pin-coupled by a pin 82 at the center of both hydraulic dampers 78a and 78b, and the other end is pin-coupled to the beam 3 by a loose hole 80. In the vicinity of the lower end of the arm 88, the arm 88 is rotatably connected by the lower end of the support legs 76a and 76b and the pin 84.

  FIG. 4 shows the structure of hydraulic dampers 78a and 78b in the second embodiment of the vibration control device according to the present invention. The cylinder 90 includes a piston 92 having an outer shape smaller than the inner diameter of the cylinder 90, and a rod 94 that stands vertically from the piston 92 and protrudes to the outside of the cylinder 90. Filled and an orifice 98 is formed in a part of the piston 92 to be a passage for the oil 96. For this reason, the piston 92 can slide in the cylinder 90 in the longitudinal direction.

  In such a configuration, when the building vibrates due to seismic force or wind force, the relative speed (relative speed generated between the layers) is transmitted from the beam 3 to the arm 88 via the pin coupling 80. The relative speed is amplified at pin 82 by the effect of the insulator centered on pin 84. The amplification factor is the ratio of the distance from the pin 84 to the pin 82 to the distance from the pin 84 to the pin 80. Amplified contraction and expansion effects are produced from the pin 82 to the hydraulic dampers 78a and 78b. The amplified relative speed can enhance the damping effect by pressing or pulling the oil 96 through the rod 94 of the hydraulic damper.

  Although the hydraulic damper is used in the second embodiment, it can be naturally achieved with a damping piece.

  FIG. 3B shows an embodiment according to the present invention in which the depth of the vibration control device is further reduced in the second embodiment. In order to reduce the thickness, the length of the hydraulic dampers 78b and 78c may be shorter than the length of the connecting portions with the brace structure beam. With this configuration, the V brace structures 76c and 76d and the hydraulic dampers 78b and 78c can be arranged in the same plane, so that the thickness can be reduced.

  FIG. 3C is a cross-sectional view taken along the line AA in FIG. 3B, and it is clear that the V brace structure 76c and the hydraulic damper 78C are arranged in the same plane.

  FIG. 5 is a configuration diagram of a third embodiment of the vibration control device according to the present invention.

  The vibration control device 104 according to the present invention is installed in a frame constituted by the pillar 1 of the building structure and the beams 2 and 3. Between the beams 2 and 3, support legs 106a and 106b, a damping piece 108, and an arm 118 are arranged.

  The support legs 106a and 106b are connected to the upper beam 2, and one of the support legs 106a is connected to the beam 2 obliquely while having the function of a brace, and the 106b is connected to the beam 2 vertically. The damping piece 108 is pin-coupled to the upper beam 2 by a first pin 107. On the other hand, the lower end of the attenuation piece 108 is pin-coupled by the third pin 112 and one end of the arm 118 disposed horizontally with respect to the column. The other end of the arm 118 is rotatably connected to the lower ends of the support legs 106a and 106b at a pin support point 114. The arm 118 extends vertically downward from the pin support point 114, and the lower end is pin-connected to the beam 3 by the second pin 110. A loose hole is provided so that the opening in the pin coupling 110 can move up and down.

  By being configured in this way, since one of the support legs extends in the vertical direction, a space having a certain size can be secured.

  In such a configuration, when the building vibrates due to seismic force or wind force, the vibration energy (relative velocity generated between the layers) is transmitted from the beam 3 to the arm 118 via the pin coupling 110, and the pin 114 of the arm 118 is transmitted. Amplified by center rotation. The amplification ratio is the ratio of the distance from the pin 114 to the pin 112 with respect to the distance from the pin 114 to the pin 110. The effect of contraction and expansion amplified from the pin 112 to the attenuation piece 108 occurs. The shaft is supported so as to rotate on the guide screw portion 36 and slide in the vertical direction in the figure in response to both compressive and tensile loads generated from the relative displacement. A simple and small configuration (particularly extending in the longitudinal direction) that converts the linear displacement of the threaded portion into the rotational motion of the rotating inner cylinder, and has an extremely large damping effect compared to this type of conventional device. Can be easily achieved

  Next, FIG. 6A, FIG. 6B, FIG. 6C, FIG. 6D, and FIG. 6E show a modification of the first embodiment according to the present invention. First, an embodiment in which the support leg and the damping piece can be arranged simultaneously. .

  In FIG. 6A, the connection points of the support legs 136a and 136b and the beam of the attenuation piece 128 are arranged to coincide with each other. In this embodiment, when the length of the arm 138 is extended and the damping piece is suspended vertically from the connection points 127a and 127b between the support legs 136a and 136b and the beam 2, the arm 138 is arranged to be the end of the arm 138. .

  By arranging in this way, the support legs 136a and 136b, the damping piece and the arm can be arranged on an integral surface, so that the space is extremely saved.

  On the other hand, in FIG. 6B, the length of the damping piece is extended so that the damping piece is connected to the connecting point 127b between the support legs 136c and 136d and the beam 2. Similarly, since the support legs 136c and 136d, the damping piece 128a, and the arm 138a can be arranged on an integrated surface, the space is extremely saved.

  6C, FIG. 6D, and FIG. 6E show an embodiment 4 that further improves the insulator ratio.

  By increasing the width of the arm 138b and providing a pin 133c for connecting to the support legs 136e and 136f and a pin 131c for connecting to the beam 3 at the center of the arm 138b, the pin 133c with respect to the distance between the pin 129c and the pin 133c is provided. And the pin 131c are shortened to increase the lever ratio.

  Further, as shown in FIGS. 6D and 6E, since the support legs 136e and 136f and the damping piece 128b are arranged on the same plane, the vibration control device can be made thin.

  In addition, as shown in FIG. 7, the seismic control effect can be enhanced by arranging the seismic control devices according to the present invention in a connected manner. In particular, since the reaction force applied to the support leg is obliquely connected to the beam 2, if the reaction force is divided into a vertical component and a horizontal component, the vertical component of the reaction force of the continuous vibration control device will cancel each other out. .

Since the vibration control device according to the present invention enables a reduction in cost with a large space, it can be applied to structures that are expected to generate earthquakes and structures that are subject to daily vibration due to traffic. can do.

It is a block diagram of the 1st Example of the damping device which concerns on this invention. It is a block diagram of the attenuation | damping piece applied to the 1st Example of the damping device which concerns on this invention. The block diagram of the 2nd Example of the damping device which concerns on this invention is shown. The block diagram of the 2nd Example of the damping device which concerns on this invention is shown. Sectional drawing of the 2nd Example of the damping device which concerns on this invention is shown. The block diagram of the hydraulic damper in the 2nd Example of the damping device which concerns on this invention is shown. It is a block diagram of the 3rd Example of the damping device which concerns on this invention. It is a block diagram of the 4th Example of the damping device which concerns on this invention, Comprising: An attenuation | damping piece becomes vertical direction. It is a block diagram of the 4th Example of the damping device which concerns on this invention, Comprising: An attenuation | damping piece becomes diagonal. It is a block diagram of the 4th Example of the damping device which concerns on this invention. It is sectional drawing of the 4th Example of the damping device which concerns on this invention. It is sectional drawing of the 4th Example of the damping device which concerns on this invention. It is a block diagram of the 4th Example of the damping device which concerns on this invention. It is a graph which shows the speed dependence of a viscous damping force. It is a graph which shows the dependence of the axial velocity of an attenuation | damping piece, and an axial damping force.

Explanation of symbols

1 pillar 2, 3 beam 4 damping device 6a, 6b support leg 7a, 7b first pin 8a, 8b damping piece 10 second pin 12a, 12b third pin 14 pin support point 18 arm 30 speed amplifier 32 transmission Part 34 damping part 36 guide screw part 38 linear bearing bearing 40 ball bearing 42 guide nut 44 outer cylinder 46 thrust bearing 48 rotating inner cylinder 50 outer cylinder 52 viscous body 54 seal 56 linear shaft 74 damping device 76a, 76b support leg 78a, 78b Hydraulic dampers 79a, 79b Base 80 Loose hole 88 Arm 82 Pin 84 Pin 90 Cylinder 92 Piston 94 Rod 96 Oil 98 Orifice 104 Damping device 107 Pin 106a, 106b Support leg 108 Damping piece 110 Second pin 112 Third pin Pin 114 Pin support point 118 Arm 127a, 127 Connection points 136a, 136 b support legs 138 arm

Claims (13)

  A support leg installed between upper and lower layers of a building structure and having one end connected to one first layer of the upper and lower layers, a resistor coupled to the first layer by a first pin, and one end of the upper and lower layers A second pin connection is made to the other second layer of the first electrode, and the other end is connected to the resistor and the third pin connection, and a pin support point is provided which is connected to the other end of the support leg and serves as a center of rotation. The displacement is amplified by a distance ratio between a distance from the pin support point to the second pin coupling and a distance from the pin support point to the third pin coupling, and the amplified displacement (speed) ) Is applied to the resistor to generate a resistance force related to the distance ratio and to act on the building structure.   The building vibration control device according to claim 1, wherein the pin support point of the arm is an intersection of the horizontal arm portion and the vertical arm portion.   2. The building vibration control device according to claim 1, wherein the arm comprises only a vertical arm.   A support leg that is installed between upper and lower layers of a building structure and has one end connected to one of the first layers of the upper and lower layers, and two foundations protruding from the first layer are horizontally stretched and connected. A resistor, one end of which is connected to the second layer of the upper and lower layers by a second pin, and the other end of which is a third pin between the two resistors and the other support legs. The arm is provided with a pin support point that is coupled to the end portion and also serves as a rotation center, and depends on the distance from the pin support point to the second pin connection and the distance from the pin support point to the third pin connection. A building vibration control device that amplifies a displacement (speed) from a distance ratio and applies the amplified displacement to the resistor to generate a resistance force related to the distance ratio and to act on the building structure.   The building damping device according to any one of claims 1 to 4, wherein the joint between the arm and the second layer comprises a loose hole.   6. The building vibration control device according to claim 1, wherein the support leg has a brace structure or a wall structure.   The building control device according to claim 1, wherein one of the support legs is disposed vertically with respect to the upper and lower layers.   By arranging so that the connection point between the support leg and the first layer and the connection point between the resistor and the first layer substantially overlap, the support leg and the resistor are arranged in the same plane. The building vibration control device according to claim 1, wherein the device is a building vibration control device.   The building damping device according to claim 1, wherein the resistor is an oil damper.   The building damping device according to claim 1, wherein the resistor is a hysteresis damper.   8. The building damping system according to claim 1, wherein the resistor includes an inner ring and an outer ring having different radii on the same axis and is a rotating body whose mass is concentrated on the outer ring from the inner ring. apparatus.   The rotating body includes first and second connecting members that are connected to each other so as to be relatively displaceable. The first connecting member includes at least a first rod having a guide screw portion formed on the connecting side thereof, A guide nut that is engaged with the guide screw portion and is rotatably supported on the guide screw portion based on a relative displacement with the guide screw portion, and has a larger diameter than the first rod and is sufficiently larger than the diameter. The cylindrical rotating body has a large axial length and is rotatably inserted through the guide nut. The second connecting member accommodates the cylindrical rotating body and the guide nut. The damping device comprising a cylindrical casing, wherein at least a gap between the inner wall of the cylindrical casing and the cylindrical rotating body is filled with a viscous viscous body and / or a viscoelastic body. Isolation System.   Support legs installed between upper and lower layers of a building structure and connected to one first layer of the upper and lower layers, a resistor connected to the first layer, and one end to the other second layer of the upper and lower layers It consists of an arm provided with a pin support point that is pin-coupled and the other end is pin-coupled to the resistor and is also provided with a support leg and a pin support point that also serves as the center of rotation. A building structure provided with a building vibration control device that amplifies and generates a resistance force related to the distance ratio from the amplified displacement and acts on the building structure.

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