CN106320558A - Mixed type multi-dimensional and multi-level energy dissipation device - Google Patents

Abstract

The invention discloses a mixed type multi-dimensional and multi-level energy dissipation device. The mixed type multi-dimensional and multi-level energy dissipation device comprises a metallic inner box and an outer box which are nested together, wherein the outer wall of the inner box and the inner wall of the outer box are connected through a spring; a plurality of rolling metallic balls are arranged at the bottom of the inner box and inlaid in spherical grooves in the outer box; a mass ball is suspended at the top of the inner box, can swing in any direction in the inner box and can collide with the side wall of the inner box; a viscoelastic material layer is arranged outside the mass ball so as to realize primary energy dissipation in the horizontal direction; the inner box is driven to slide in the horizontal direction through swing and collision of the mass ball, so that the spring in the connected position of the outer box and the inner box deforms, and the multi-level energy dissipation is realized.

Description

Hybrid Multidimensional Multistage Energy Dissipating Vibration Damping Device

technical field

The invention belongs to the vibration reduction control of towering structures, in particular to a hybrid multi-dimensional and multi-stage energy consumption vibration reduction device.

Background technique

In recent years, with the continuous increase of building height, the losses caused by earthquakes and wind disasters have become more and more serious. The safety, aesthetics and comfort of buildings have become a research hotspot in the field of civil engineering and have received more and more attention.

Traditional seismic structural systems actually rely on the damage of structures and load-bearing components to consume most of the input energy. This method often leads to serious damage or even collapse of structural components. This is unreasonable and unsafe to a certain extent. It is a passive approach. Anti-seismic method. In order to overcome the defects of traditional anti-seismic methods, structural vibration control technology has been gradually developed, and it is considered to be an effective means to reduce the vibration response of structures. Studies have shown that vibration reduction control measures can effectively reduce the impact of high-rise structures under dynamic loads such as earthquakes or wind. Response, significantly improve the disaster resistance of the structure.

The vibration reduction system of suspended mass pendulum structure is to hang the mass pendulum on the structure. When the system generates horizontal vibration under the action of earthquake, it will drive the vibration of the pendulum, and the inertial force generated by the pendulum vibration reacts on the structure itself. When this inertial force When it is opposite to the movement of the structure itself, the vibration damping effect is produced, so as to achieve the purpose of controlling the vibration of the structure.

At present, the common vibration control devices can only control the vibration in a certain direction or in a few specific directions. Considering the multi-dimensionality of the direction of earthquake or wind load and the complexity of structural vibration, such vibration control devices cannot be very good. meet the requirements of vibration control. Universal hinges and rolling metal balls are used in this patent, and the shock absorbing box can move freely in the horizontal direction to consume energy and reduce vibration in all directions. The mass ball in this patent is a metal ball with a viscoelastic material layer, and the outer layer is rubber, which is easy to manufacture, and can collide with the side wall when swinging, and the collision will cause the horizontal sliding of the inner box at the same time, thereby further consuming the structural vibration. Energy, play the effect of multi-level energy consumption and vibration reduction.

Contents of the invention

The object of the present invention is to provide a multi-level multi-dimensional collision energy consumption and vibration reduction device, which aims to reduce the vibration response of building structures (especially high-rise buildings or towering structures, etc.) under the action of wind and earthquake, so as to achieve the effect of energy consumption and vibration reduction .

To achieve the above object, the present invention adopts the following technical solutions:

The hybrid multi-dimensional and multi-stage energy-dissipating vibration damping device includes a metal inner box and an outer box that are set together, and the outer wall of the inner box and the inner wall of the outer box are connected by a spring, and the bottom of the inner box There are several rolling metal balls, the metal balls are embedded in the spherical groove of the outer box, and a mass ball is suspended at the center of the top of the inner box, and the mass ball can The inside of the inner box swings in any direction and can collide with the side wall of the inner box. The outside of the mass ball is provided with a layer of viscoelastic material, so as to play the role of primary energy consumption and vibration reduction in the horizontal direction; The swing and collision of the mass ball cause the inner box to slide in the horizontal direction, thereby deforming the spring at the junction of the outer box and the inner box, which plays a role of multi-stage energy consumption and vibration reduction.

Further, the mass ball is suspended on the top of the inner box by a rigid suspender, the upper end of the rigid suspender is connected with the universal hinge fixed on the top of the inner box, and the lower end is fixedly connected with the mass ball.

Further, the inner box body and the outer box body are cylindrical tubular structures, and the two are coaxially installed.

Further, a plurality of springs are arranged along the circumferential direction of the inner box and the outer box, and the plurality of springs are evenly distributed in the circumferential direction.

Further, a plurality of metal balls are arranged around the central axis of the inner box, and the plurality of metal balls form a circle and are evenly distributed in the circumferential direction.

Further, viscoelastic material is pasted on the outer side of the mass ball, which is convenient for energy absorption and cost saving.

Further, the bottom of the inner metal box is in contact with the outer box through several slidable metal balls, and the friction force should be as small as possible to facilitate the free sliding of the upper box under external excitation.

Further, the inner box is connected to the outer box through a shape memory alloy energy-dissipating spring on the side wall, and the further consumption of energy is facilitated by the elongation and shortening of the shape-memory alloy energy-dissipating spring.

Further, the centers of the rigid suspender and the mass ball are located on the vertical centerline of the inner box, and the mass ball can swing in any direction to achieve a multi-dimensional vibration reduction effect.

Further, the material of the viscoelastic material layer is rubber, silica gel or other elastic materials, so as to better absorb energy, dissipate energy and reduce vibration.

Further, the mass ball and the rigid suspender form a mass pendulum, the frequency of the mass pendulum is controlled by the mass of the mass ball and the length of the rigid suspender, and the pendulum length is designed according to the frequency of the controlled structure.

Further, the part of the metal ball in contact with the outer box is coated with lubricating oil.

So as to achieve better vibration reduction effect.

The invention should be fixed to the top of a towering structure. The upper end of the universal hinge is connected to the top of the inner metal box by welding, and the lower end of the rigid suspender is connected to the mass ball. The universal hinge allows the rigid pole to move in any direction. The rigid suspender and the mass ball form a multi-directional suspended mass pendulum. , through the swing and collision of the mass ball and the elongation and shortening of the shape memory alloy spring, the vibration response of the controlled structure is reduced, and the effect of multi-dimensional and multiple energy consumption and vibration reduction can be achieved; the length of the rigid suspender and the length of the spring can be adjusted Stiffness or mass balls are used to ensure that the frequency of the shock absorber is consistent with the natural frequency of the structure to achieve the optimal vibration reduction effect.

The beneficial effects of the present invention are: the damping device realizes multi-dimensional control of structural vibration by setting universal hinges and slidable metal balls, and uses suspended mass pendulum and memory alloy energy-dissipating spring to realize multi-level control of structural vibration, which can be better Dissipate energy efficiently and improve the vibration reduction effect; the vibration reduction device has the characteristics of simple structure, low price and easy installation.

Description of drawings

Fig. 1 is a front view of a multi-dimensional multi-stage damping device.

Fig. 2 is an A-A sectional view of the multi-dimensional and multi-stage damping device.

In the figure: 1 universal hinge, 2 rigid suspender, 3 viscoelastic material layer, 4 mass ball, 5 rolling metal ball, 6 inner box, 7 shape memory alloy energy dissipation spring, 8 outer box.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

The hybrid multi-dimensional and multi-stage energy dissipation vibration damping device proposed by the present invention is shown in Fig. 1 and Fig. 2, and comprises a metal inner box body 6 and an outer box body 8 set together, and the inner box body 6 outer wall and the outer The inner walls of the box body 8 are connected by springs. The bottom of the inner box body is provided with several rolling metal balls 5, and the metal balls 5 are embedded in the spherical grooves of the outer box body. A mass ball is suspended at the center of the top of the box. The mass ball 4 can swing in any direction inside the inner box and can collide with the side wall of the inner box. The outside of the mass ball 4 is provided with a layer of viscoelastic The material layer 3 plays the role of primary energy dissipation and vibration reduction in the horizontal direction; the swing and collision of the mass ball 4 cause the inner box to slide in the horizontal direction, so that the spring at the connection between the outer box and the inner box will Deformation, play the role of multi-stage energy consumption and vibration reduction.

The shock absorber of the device is composed of a slidable inner box and a suspended mass pendulum. The primary energy-dissipating shock absorber is the suspended mass pendulum, which is composed of a universal hinge 1, a rigid suspension rod 2, and a mass ball 4; the secondary shock absorber is composed of several shape memory alloy springs 7, which can roll metal balls 5. The inner metal box 6 and the outer metal box 8 are composed.

Further, the mass ball is suspended on the top of the inner box by a rigid suspender, the upper end of the rigid suspender is connected with the universal hinge fixed on the top of the inner box, and the lower end is fixedly connected with the mass ball.

Further, the inner box body 6 and the outer box body 8 are cylindrical tubular structures, and both are installed coaxially.

Further, a plurality of springs are arranged along the circumferential direction of the inner box body and the outer box body, and the plurality of springs are evenly distributed in the circumferential direction.

Further, a plurality of metal balls 5 are arranged around the central axis of the inner box, and the plurality of metal balls form a circle and are evenly distributed in the circumferential direction.

Further, viscoelastic material is attached to the outer side of the mass ball 5, which is convenient for energy absorption and cost saving.

Furthermore, the bottom of the inner metal box is in contact with the outer box through several slidable metal balls, and the friction force should be as small as possible, so that the upper box can slide freely under external excitation.

Further, the inner box is connected to the outer box through the shape memory alloy energy dissipation spring on the side wall, and the further consumption of energy is facilitated by the elongation and shortening of the shape memory alloy energy dissipation spring.

Further, the centers of the rigid suspender and the mass ball are located on the vertical centerline of the inner box, and the mass ball can swing in any direction to achieve a multi-dimensional vibration reduction effect.

Further, the material of the viscoelastic material layer 3 is rubber, silica gel or other elastic materials, so as to better absorb energy, dissipate energy and reduce vibration.

Further, the mass ball and the rigid suspender form a mass pendulum, the frequency of the mass pendulum is controlled by the mass of the mass ball and the length of the rigid suspender, and the pendulum length is designed according to the frequency of the controlled structure.

Specifically, the outer container box 8 is installed on the top of the structure, and it is connected with the inner metal cylindrical box body 6 through a shape memory alloy energy-dissipating spring 7, and the inner metal box body 6 is in contact with the outer box body through a rolling metal ball 5 . The hanging mass pendulum of horizontal direction is set in the metal cylinder box 5 . The universal hinge is welded to the center of the top of the inner box, the upper end of the rigid suspender is connected to the universal hinge, the lower end is welded to fix the mass ball, and a viscoelastic material layer 3 is attached to the outside of the mass ball 4 . The rigid suspender 2 and the mass ball 4 connected with the universal joint can swing in any direction, and can collide with the side wall of the inner metal box. A slidable metal ball 5 is arranged at the bottom of the inner metal box body 6, so that the box body can move freely in the horizontal direction, and achieve multi-dimensional and multi-level vibration reduction effects.

In this embodiment, when setting the mass ball, the length of the rigid suspender in the inner cylindrical box, the mass of the inner box, and the spring stiffness, it is necessary to pay attention to the following: First: the swing frequency of the mass ball and the inner box should be based on the controlled structure The pendulum length is specifically designed according to the frequency, so as to achieve better vibration reduction effect. ; Second: The viscoelastic material is arranged on the surface of the mass ball, which is convenient for absorbing energy and reducing the cost; Third: The part of the bottom of the inner box that is in contact with the outer box through a rolling metal ball should be brushed with an appropriate amount of lubricating oil to reduce The friction between the box and the ball ensures better sliding of the box.

In this embodiment, the installation location and quantity of the hybrid multi-dimensional and multi-stage energy-dissipating vibration-damping devices should be determined according to the specific conditions of the structure, so as to achieve the best vibration-damping effect.

The above-mentioned embodiments of this patent do not limit the scope of protection of the present invention. Under the premise of the above-mentioned basic technical ideas, other various forms of modification, replacement or change made to the above-mentioned structure of this patent shall fall within the scope of protection of this patent.

Claims (10)

1. the multistage dissipative damping device of mixed type multidimensional, it is characterised in that include metal internal box and the outer container being set in together Body, is connected by spring between outer case inwall at described internal box outer wall, is provided with several bottom described internal box Rotatable metal ball, described metal ball is embedded in the ball recess of outer case, hangs at the top of described internal box Having a mass ball, described mass ball can swing at the internal any direction of described internal box, and can send out with internal box sidewall Raw collision, the outside of described mass ball is provided with one layer of viscoelastic material layer, thus plays first passive energy dissipation in the horizontal direction Effect；The swing of mass ball causes the slip in internal box horizontal direction with collision, so that outer case and internal box connect The spring at place deforms, and plays multistage passive energy dissipation effect.

2. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described mass ball passes through One rigid hanger is suspended on internal box top, and rigid hanger upper end is connected with the universal hinge being fixed on internal box top, lower end Fix with mass ball and be connected.

3. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described mass ball and rigidity Suspension rod forms quality pendulum, and the frequency of quality pendulum is controlled, according to controlled structure by the length of the quality of mass ball with rigid hanger Frequency Design pendulum length.

4. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described internal box is with outer Casing is cylindrical tubular structure, and both are co-axially mounted.

5. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 4, it is characterised in that described spring is along interior The circumferencial direction of casing and outer case is provided with multiple, and multiple springs are uniformly distributed in a circumferential direction.

6. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 4, it is characterised in that described metal ball is around interior The central axis of casing is provided with multiple, and multiple metal ball form a circle and are uniformly distributed in a circumferential direction.

7. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described spring is shape Memorial alloy energy dissipation spring, by elongation and the shortening of shape memory alloy energy-consuming springs, it is simple to the further consumption of energy.

8. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described rigid hanger and matter The center of amount ball is respectively positioned on the vertical centrage of internal box.

9. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described viscoelastic material layer Material be rubber or silica gel.

10. the multistage dissipative damping device of mixed type multidimensional as claimed in claim 1, it is characterised in that described metal ball with The part that outer case contacts is brushed lubricating oil.