KR20020089537A - Vibration control system of construction - Google Patents

Abstract

PURPOSE: A vibration control device for a structure is provided to reduce the horizontal vibration of a structure caused by external force effectively and to restrict the rotation of a movable mass. CONSTITUTION: The vibration control device(100) for a structure comprises: a base plate(110) fixed to the upper part of a structure; a main vibration damping unit(120) fixed to the upper part of the base plate(110) to offset vibration occurring on the structure and composed of a gusset plate(122) connected to a movable mass(130) and a laminating part(124) coupled between the gusset plate(122) and the base plate(110); a movable mass(130) coupled to the upper part of the main vibration damping unit(120) to be moved by the main vibration damping unit(120); and an auxiliary vibration damping unit fitted to the upper part of the base plate(110) to be placed to the outer horizontal direction of the main vibration damping unit(120) and coupled with the movable mass(130) to restrict the movement of the movable mass(130).

Description

VIBRATION CONTROL SYSTEM OF CONSTRUCTION}

The present invention relates to a vibration control device, and more particularly, to a vibration control device for a structure that reduces vibration for a structure that is likely to cause horizontal vibration due to wind or road vibration, such as a high-rise building or a control tower.

In general, structures formed high above the ground, such as high-rise buildings are affected by the wind. When a structure has its own natural frequency and an external force of the same frequency is applied, the structure's vibration is amplified to deteriorate the durability of the structure, and in severe cases, a risk of collapse occurs.

Therefore, reducing the vibration caused by the external force of the structure has become a very important technology especially in the recent building and other structures which are getting higher.

As a means for reducing vibration of such buildings and other structures, as shown in FIG. 1, the vibration control device 20 is installed on the roof of the building 10 to reduce the vibration of the building 10 due to wind. .

2 shows the vibration control device 20 by the laminated dustproof rubber 24, the configuration of which is the base plate 22, laminated rubber 24, X-axis damper 26, Y-axis damper (28) and a movable mass (30).

In the vibration control device 20 according to the configuration of FIG. 2, the movable mass 30 for vibration reduction placed on the laminated rubber 24 is moved in a horizontal plane, and the vibration is canceled to reduce the vibration of the building 10. In addition, the vibration reduction effect is increased by the damping force of the X-axis direction damper 26 and the Y-axis direction damper 28 provided separately between the laminated vibration-proof rubbers 24.

However, the vibration control device using the anti-vibration rubber laminated in the above manner is effective for micro vibration because there is little friction force acting in the direction of movement of the movable mass, but the binding force against the rotational movement of the movable mass is not applied. Therefore, torsional vibration of the building may be undesirable, which causes a problem of lowering linear vibration efficiency.

In addition, once installed, it is difficult to control the vibration offset period of the vibration control device, so there is a technical difficulty that a complete analysis of the vibration of the building and other structures must be preceded before installation. That is, once installed, it was difficult to tune and find and set the natural frequency of the most preferred vibration control device while changing the natural frequency of the vibration control device.

An object of the present invention is to provide a vibration control device for a structure that can more effectively reduce the horizontal vibration of buildings and other structures due to external forces, such as wind or road vibration, and to bind the rotational movement of the moving mass.

Another object of the present invention is to provide a vibration control device for a structure that can efficiently perform the period adjustment operation of the movable mass even after the vibration control device is mounted on the structure.

In order to achieve the above objects, the present invention provides a vibration control apparatus for reducing vibration of a structure, comprising: a base plate mounted on an upper portion of the structure; A main vibration isolator mounted on an upper surface of the base plate to cancel vibration generated in the structure; A movable mass mounted to an upper portion of the main vibration isolator so as to be linked to the movement of the main vibration damper; And an auxiliary vibration damping unit mounted between the base plate upper surface and the movable mass so as to restrain the movement of the movable mass in a set direction.

1 is a perspective view showing the position of the vibration control device installed in the structure.

Figure 2 is a perspective view showing the configuration of a vibration control device according to the prior art.

Figure 3 is an exploded perspective view showing the configuration of a vibration control device according to an embodiment of the present invention.

Figure 4 is a perspective view showing a coupling relationship between the components of the vibration control device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrative of the invention and are not meant to limit the invention to them. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Referring to Figures 3 and 4 will be described the configuration of the vibration control apparatus 100 according to an embodiment of the present invention.

Vibration control device 100 according to an embodiment of the present invention relates to a vibration control device 100 for reducing vibration for a structure that is likely to generate horizontal vibration due to wind or road vibration, such as high-rise buildings and control towers, As shown in FIG. 3, the configuration includes a base plate 110, a main vibration damper 120, a movable mass 130, and an auxiliary vibration damper 140. Here, it should be noted that damping is used to mean vibration suppression and attenuation of vibration.

The base plate 110 may be implemented as a horizontal surface of the upper part of the structure, such as a roof of the structure, but is preferably formed of a rectangular parallelepiped panel placed on the upper floor of the structure.

The main vibration isolator 120 is mounted at the center of the upper surface of the base plate 110. The main vibration damper 120 has a predetermined restoring force and functions to cancel the vibration generated in the structure while allowing the movable mass 130 to move manually according to the movement of the structure by external force.

The main vibration damper 120 includes a connecting plate 122 having an upper surface connected to the movable mass 130, and a laminated part 124 coupled between the connecting plate 122 and the base plate 110.

As illustrated in FIG. 3, the stacking unit 124 has a shape in which a plurality of rubbers having a predetermined elasticity are stacked on the bottom edges of the connecting plate 122. The elastic force of the laminated rubber acts as a restoring force for the movement of the movable mass 130.

The movable mass 130 is a mass that is coupled to the main vibration damper 120 and moved by the main vibration damper 120.

Most of the load of the movable mass 130 acts on the main vibration damping unit 120.

The auxiliary vibration damping unit 140 is mounted on the upper surface of the base plate 110 so as to be disposed in the outer horizontal direction of the main vibration damping unit 120, and binds the movement of the movable mass 130 to the movable mass 130. Function

As shown in FIG. 3, the auxiliary vibration damper 140 includes first and second guide rails 141 and 142 and third and fourth guide rails 143 and 144.

The guide rail is referred to as including a conventional rail and a frame supporting the rail.

In addition, in the coupling relationship between the first and second guide rails 141 and 142 and the third and fourth guide rails 143 and 144, the first and second guide rails 141 and 142 may be the third, second, and third guide rails 141 and 142. The fourth guide rails 143 and 144 are disposed to be perpendicular to each other.

That is, the first and second guide rails 141 and 142 are disposed in the X-axis direction of FIG. 3, and the third and fourth guide rails 143 and 144 are disposed in the Y-axis direction of FIG. 3.

The first and second guide rails 141 and 142 are divided and positioned at upper edge portions of the base plate 110, and are parallel to each other at predetermined intervals in the front and rear X-axis directions of the main vibration damper 120. Is fitted. The first and second guide rails 141 and 142 are arranged in the X-axis direction of FIG. 3, and when the movable mass 130 moves on the horizontal plane, the first and second guide rails 141 and 142 limit the direction to the X-axis direction.

Lower portions of the third and fourth guide rails 143 and 144 are divided in the orthogonal directions of the first and second guide rails 141 and 142, respectively, and an upper portion thereof is disposed below the movable mass body 130. Each is connected. As shown in FIG. 3, the third and fourth guide rails 143 and 144 are arranged in parallel to the left and right Y-axis directions of the main vibration isolator 120, and allow the movable mass 130 to move on a horizontal plane. If so, the direction is limited to the Y-axis direction and guided. Rails formed on the upper portions of the third and fourth guide rails 143 and 144 are respectively connected to the guide portions 132 coupled to the lower portions of the movable mass bodies 130 as shown in FIGS. 3 and 4.

That is, the first to fourth guide rails 141 to 144 are connected to the base plate 110 and the movable mass 130, respectively, with a lower portion and an upper portion thereof to support a portion of the movable mass 130, and at the same time the first and fourth guide rails 141 to 144. The second guide rails 141 and 142 are connected to be orthogonal to the lower portions of the third and fourth guide rails 143 and 144 to perform horizontal movement in a limited direction, thereby rotating and moving the movable mass 130 in the vertical direction. Will be bound.

As a result, the horizontal plane motion of the movable mass 130 is decomposed in the two axis directions of the X axis direction and the Y axis direction shown in FIG. 3 according to the connection configuration of the first to fourth guide rails 141 to 144. .

For reference, a configuration in which the first and second guide rails 141 and 142 are connected to the third and fourth guide rails 143 and 144, and the third and fourth guide rails 143 and 144 It should be noted that a detailed configuration connected to the guide portion of the movable mass 130 is omitted.

The embodiment of the present invention further includes a first and second period adjusting units 145 to 148 and third and fourth period adjusting units 149 to 152 in the auxiliary vibration suppressing unit 140. .

Referring to FIG. 3, the first and second period adjusting units 145 to 148 may be mounted in parallel to each other in the X-axis direction between the third and fourth guide rails 143 and 144. 145, 147, and the first and second tension coil springs 146, 148.

The bottom surfaces of the first and second blocks 145 and 147 are coupled to and fixed to the top surface of the base plate 110.

The first and second tension coil springs 146 and 148 are respectively mounted between the first and second blocks 145 and 147 and the third and fourth guide rails 143 and 144 to move the movable mass 130. Adjusts the restoring force acting in the X-axis direction of the X-axis, and the movement of the rotational direction of the X-axis direction of the movable mass 130 is made within the set tension range.

By adjusting the number or tension of the first and second tension coil springs 146 and 148 differently, it is possible to easily adjust the period in the X-axis direction of the movable mass 130.

The third and fourth period adjusting units 149 to 152 are mounted in parallel to each other in the Y-axis direction between the third and fourth guide rails 143 and 144 to be connected to the movable mass 130. Four blocks 149 and 151 and third and fourth tension coil springs 150 and 152 are formed.

The bottom surface of the third and fourth blocks 149 and 151 is not fixed to the upper surface of the base plate 110, and the upper surface of the third and fourth blocks 149 and 151 is fixedly coupled to the lower surface of the movable mass body 130.

The third and fourth tension coil springs 150 and 152 are mounted between the third and fourth blocks 149 and 151 and the third and fourth guide rails 143 and 144, respectively, so that the Y of the movable mass 130 The restoring force acting in the axial direction is adjusted, and the Y-axis periodic control of the movable mass 130 and the movement in the rotational direction are made within a set tension range.

By controlling the number or tension of the third and fourth tension coil springs 150 and 152 differently, it is possible to facilitate the Y-axis periodic control of the movable mass 130.

In addition, the embodiment of the present invention further includes the first and second shock absorbing parts 153 and 154 and the third and fourth shock absorbing parts 155 and 156 in the auxiliary vibration suppressing part 140. .

Referring to FIG. 3, the third and fourth guide rails 143 and 144 may be adjacent to the mounting directions of the first and second period adjusting units 145 to 148. The damper is mounted between the dampers to generate a damping force acting in the X-axis direction of the movable mass body 130. Each of the first and second shock absorbing parts 153 and 154 has one end thereof coupled to one surface of the third and fourth guide rails 143 and 144, and the other end thereof is embedded in a cylindrical cylinder. do. The cylinder is supported by a separate frame is configured to be coupled to the upper surface of the base plate 110.

The third and fourth buffer parts 155 and 156 are disposed between the third and fourth guide rails 143 and 144 to be adjacent to the mounting directions of the third and fourth period adjusting parts 149, 150, 151 and 152. And a damper mounted to generate a damping force acting in the Y-axis direction of the movable mass 130. The configuration of the third and fourth buffer units 155 and 156 is the same as that of the first and second buffer units 153 and 154. However, a separate frame for supporting the cylinder is configured to be coupled to the lower surface of the movable mass (130).

3 and 4, the operation of the vibration control apparatus 100 according to the embodiment of the present invention will be described.

Embodiment of the present invention configured as described above is a vibration control device for reducing the horizontal vibration of the structure due to the wind load and road surface vibration load vibration control device consisting of a tension coil spring and rail and a vibration control device made of laminated rubber It is characterized by comprising in combination.

First, assuming that horizontal vibration due to relatively little wind or weak road vibration acts on the structure in which the vibration control device 100 of the present invention is installed, the main vibration isolator 120 moves the movable mass 130. It will move slowly in conjunction with.

Most of the weight of the movable mass 130 is applied to the main vibration isolator 120 made of laminated rubber so that the load acting on the auxiliary vibration isolator 140 is small. Therefore, since the frictional force of the first to fourth guide rails 141 to 144 constituting the auxiliary vibration damper 140 is reduced, the vibration control device 100 of the present invention may be operated even at low vibration, that is, low speed. Will work.

At this time, the rotational direction of the movable mass 130 is decomposed in the two-axis direction of the X-axis direction and Y-axis direction shown in Figs. 3 and 4 according to the connection configuration of the first to fourth guide rail (141 ~ 144) , The horizontal movement of the movable mass 130 is within the natural vibration period of the first to fourth period control unit (145 ~ 152) consisting of the elasticity of the laminated rubber 124 of the main vibration damping unit 120 and the tension coil spring Will move.

In this state, when a relatively large vibration is applied to the structure, the movable mass 130 is gradually moved in large amplitude in conjunction with the movement of the main vibration damper 120.

However, as in the prior art, the rotational movement of the movable mass 130 does not occur. And the movement of the movable mass 130 is also greatly reduced compared with the prior art.

The reason is that the elasticity of the laminated rubber acts as a restoring force of the movable mass 130, thereby canceling the vibration of the movable mass 130 to reduce the vibration of the structure and at the same time forming the auxiliary vibration damping unit 140. Through the fourth guide rail (141 ~ 144) to bind the rotational movement of the movable mass 130 in the horizontal direction, the first to fourth period adjusting unit (145 ~ 152) and the first to fourth buffer (153 ~) This is because the horizontal force is reduced to the minimum by using the reaction force of 156).

That is, the first to fourth guide rails 141 to 144 on the horizontal plane may constrain the rotational movement of the movable mass 130 by constraining the rotational movement direction of the movable mass 130 to the horizontal movement. The first to fourth period adjusting units 145 to 152 and the first to fourth buffer units 153 to 156 of 140 may also cushion the horizontal movement of the movable mass 130.

On the other hand, the detailed description of the present invention has been described with reference to specific embodiments, of course, various modifications are possible without departing from the scope of the invention. In the above-described embodiment, the configuration of the first to fourth period adjusting units 145 to 152 and the first to fourth buffer units 153 to 156 of the auxiliary vibration damper 140 has been separately described. Those skilled in the art should note that the first to fourth period adjusting units 145 to 152 and the first to fourth buffer units 153 to 156 may be combined to form a single body. For example, the tension coil spring of the periodic control unit may be fitted to the rod of the shock absorber, and the frame supporting the cylinder and the block to which the tension coil spring are coupled may be implemented.

Therefore, it should be noted that the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

As described above, according to the embodiment of the present invention, as the first to fourth rails are installed, the torsional vibration of the structure can be prevented by restraining the rotational direction of the movable mass in the horizontal direction, and the first to the fourth angles are set. By forming four rails, there is an effect of reducing vibration in multiple directions.

In addition, by installing the first to the fourth period adjusting portion so that the movable mass corresponds to the moving line moving in the horizontal direction, it is easy to adjust the period for the horizontal movement of the movable mass, in particular, the tension that can be replaced or tension adjustment Equipped with a coil spring has an effect that can be easier to adjust the cycle.

In addition, the horizontal movement of the movable mass can be reduced to a minimum by further installing the first to fourth buffer parts in the mounting direction of the first to fourth period adjusting parts, and the first to fourth period adjusting parts and the first to fourth parts. The configuration of the fourth buffer portion has the effect of buffering the horizontal movement of the movable mass to complement each other.

Claims (10)

In the vibration control device for reducing the vibration of the structure, A base plate mounted on the structure; A main vibration isolator mounted on an upper surface of the base plate to cancel vibration generated in the structure; A movable mass mounted to an upper portion of the main vibration isolator so as to be linked to the movement of the main vibration damper; And an auxiliary vibration damper mounted between the base plate upper surface and the movable mass so as to restrain the movement of the movable mass in a set direction. The vibration control device of claim 1, wherein the main vibration isolator has a shape in which a plurality of rubbers having a set elasticity are stacked. The vibration control apparatus of claim 1, wherein the auxiliary vibration damping unit includes first and second guide rails disposed on an upper surface of the base plate and arranged in parallel to the outside of the main vibration damping unit. The method of claim 3, wherein the auxiliary vibration damper A plurality of third and fourth guide rails disposed in parallel to the outside of the main vibration damping portion to be orthogonal to the first and second guide rails and connected between an upper portion of the first and second guide rails and a lower portion of the movable mass body, respectively. Vibration control device of the structure, characterized in that it further comprises. The method of claim 4, wherein the auxiliary vibration damper The vibration control device of the structure, characterized in that it further comprises a first, second period adjusting unit mounted between the third guide rail and the fourth guide rail in the direction in which the third and fourth guide rail move. The method of claim 5, wherein the first and second period control unit First and second blocks which are positioned at the center of the moving direction of the third and fourth guide rails and formed on an upper surface of the base plate, respectively; And first and second tension coil springs mounted between the third and fourth guide rails and the first and second blocks, respectively. The method of claim 5, wherein the auxiliary vibration damping unit Vibration of the structure further comprises a third, fourth period adjusting unit mounted between the third guide rail and the fourth guide rail in a direction orthogonal to the direction in which the third and fourth guide rails move. Control unit. The method of claim 7, wherein the third and fourth period adjusting unit Third and fourth blocks formed on the movable mass between the plurality of third guide rails and between the fourth guide rails in a direction orthogonal to the moving direction of the third and fourth guide rails; And third and fourth tension coil springs mounted between the third and fourth guide rails and the respective third and fourth blocks. The method of claim 5, wherein the auxiliary vibration damping unit The vibration control device of the structure, characterized in that it further comprises a first, second buffer unit mounted between the third, fourth guide rail in the direction in which the third, fourth guide rail moves. The method of claim 9, wherein the auxiliary vibration damping unit And a third and fourth buffer unit mounted between the third and fourth guide rails in a direction orthogonal to the moving direction of the third and fourth guide rails and connected to the movable mass. Vibration control device.