CN105220791B - Multidimensional dual adjustable formula damping control device - Google Patents

Abstract

The multi-dimensional double-adjustable damping control device has a structure including a bottom plate, an elastic part I, an elastic part II, a movable part, and a mass pendulum. A support rod is set on the top of the elastic part I, and the deformation of the elastic part I along the Z-axis drives the support rod to move along the Z-axis. Move in the direction of the Z axis to achieve vibration reduction in the Z-axis direction; the elastic part II and the movable part are located above the elastic part I, and the movable part moves in the X-axis direction with the deformation of the elastic part II to achieve vibration reduction in the X-axis direction; The pendulum is arranged at the center of the lower surface of the movable part, and the mass pendulum swings in the Y-axis direction to achieve vibration reduction in the Y-axis direction. Liquid is provided in the mass block of the mass pendulum so that the mass pendulum forms a tuned liquid damper, thereby realizing double vibration reduction. The invention can double reduce the vibration response of the structure under loads such as earthquake or wind in three directions, and has the characteristics of simple principle, convenient installation and high cost performance.

Description

Multi-dimensional dual adjustable damping control device

technical field

The invention relates to the field of building structures, in particular to a multi-dimensional double-adjustable damping control device, which is mainly used in the damping control of large-span, towering and other related structures.

Background technique

In recent years, in the case of more and more serious losses caused by large earthquakes and wind disasters, people are increasingly aware of the limitations and inalterability of traditional structural design for natural disasters of unknown intensity (such as the different seismic fortification intensity). Deterministic and disastrous weather exceeds historical statistics, etc.). Structural vibration control technology has changed the traditional way of using load-bearing structural systems to directly resist disasters, and uses non-load-bearing structural control devices or components to reduce the disaster response of the main structure and improve the ability of engineering structures to resist disasters. It is possible for the structure to be less damaged or not damaged under the action of disasters, and to make it fully meet the design requirements, which is a new change in the design thinking of disaster prevention and mitigation of civil engineering structures.

At present, because the passive control device does not require external energy to provide control force, and the control process does not depend on structural response and external interference information, it has many advantages such as simple structure, low cost, and easy maintenance, and is widely used in practical engineering. Passive damping control devices mainly include the following tuned mass damper (TMD), suspended mass pendulum (SMP) and tuned liquid damper (TLD).

The tuned mass damper is a passive control system composed of springs, dampers and mass blocks. Its working principle is: the structure vibrates under external excitation, which drives the tuned mass damper system to vibrate together, and the tuned mass damper system moves relative to each other. The generated inertial force reacts to the structure, and the vibration control of the structure is realized by tuning this inertial force.

The vibration reduction system of suspended mass pendulum structure is to suspend the mass pendulum on the structure. When the system generates horizontal vibration under the action of earthquake or wind load, it will drive the vibration of the pendulum; and the inertial force generated by the pendulum vibration will react on the structure itself. When this inertial force is opposite to the movement of the structure itself, it produces a damping effect, thereby achieving the purpose of controlling the vibration of the structure.

The working principle of the tuned liquid damper: the structural vibration drives the liquid to slosh to generate hydrodynamic pressure (equivalent to the damping force) in the opposite direction to the structural motion to reduce the vibration of the main structure.

At present, more and more vibration damping devices are used in practical projects, such as: Taipei 101 Building, Shanghai World Financial Building, etc., but most of the various forms of vibration dampers only control vibration in one or two directions of the structure. However, considering the complexity of structural vibration, such a vibration control device cannot well meet the requirements of vibration control.

Contents of the invention

In view of the problems referred to above, the object of the present invention is to provide a multi-dimensional double adjustable damping control device, which can reduce the vibration of high-rise structures (especially tower structures) in the left-right direction (X-axis) and front-rear direction (Y-axis). And the vibration response under loads such as earthquake or wind in the up and down direction (Z axis) to protect the main structure.

The technical solution adopted by the present invention to solve the technical problem is: a multi-dimensional double-adjustable damping control device, including a bottom plate, an elastic component I, an elastic component II, a movable part and a mass pendulum, and the bottom plate is used to carry the entire device.

The bottom end of the elastic part 1 is fixedly connected to the base plate, the top of the elastic part 1 is provided with a support rod, and the deformation of the elastic part 1 along the Z-axis direction drives the support rod to move in the Z-axis direction, so as to realize the vibration reduction in the Z-axis direction.

The elastic part II and the movable part are located above the elastic part I, and the elastic part II is symmetrically arranged on both sides of the movable part, and the movable part moves in the X-axis direction with the deformation of the elastic part II, so as to achieve vibration reduction in the X-axis direction.

The mass pendulum is arranged at the center of the lower surface of the movable part. The mass pendulum is a one-way pendulum and swings in the Y-axis direction to achieve vibration reduction in the Y-axis direction.

The frequency of the vibration damping device can be adjusted by changing the stiffness of the elastic component I and the elastic component II, and the length of the mass pendulum.

A further technical solution is: the mass pendulum includes a swing rod and a mass block, the top of the swing rod is connected to the movable part through a one-way hinge, and the bottom end of the swing rod is connected to the mass block; the mass block is provided with a liquid to make the mass The pendulum forms a tuned liquid damper, resulting in double vibration damping.

A further technical solution is: the mass block is an arc-shaped tube with both ends closed, and the cavity inside the arc-shaped tube is filled with water. The mass block is set as an arc-shaped tube. When the water sloshes in the arc-shaped tube, its upper surface will be restricted to have different heights, making it irregular, further avoiding the resonance effect and enhancing the vibration reduction effect. At the same time, the liquid in the mass block is water, which not only has good fluidity and appropriate density, but also is non-toxic and tasteless, and will not cause pollution.

A further technical solution is: the elastic part 1 includes four vertical springs, the four vertical springs are arranged in a rectangle, and the outsides of the four vertical springs are respectively sleeved with sleeves so as to deform in the vertical direction; The bottom ends of the vertical spring and the sleeve are fixedly connected to the base plate, and the top end of the vertical spring is connected with a cover plate, and the cover plate moves in the sleeve with the deformation of the vertical spring, and the support rod is a longitudinal rod connected to the top of the cover.

The elastic parts I are arranged in a rectangle, which facilitates the arrangement of the elastic parts II and the movable parts above them, and simplifies the structure of the whole device.

A further technical solution is: the elastic part II and the movable part are arranged on a rectangular frame, the rectangular frame is arranged on the top of the support rod, and the rectangular frame includes two long-side rods and two short-side rods, The four corners of the rectangular frame are respectively fixedly connected with the top ends of the four support rods.

The rectangular frame is connected with the four support rods of the elastic part I to form an integral frame, which has a certain foundation stability. At the same time, because the rigidity of each vertical spring in the elastic part I is consistent, it can avoid the deflection of the rectangular frame, thereby ensuring The elastic part II performs vibration control in the X-axis direction.

A further technical solution is: the movable part includes two bushings and a connecting rod, the two bushings are respectively movably sleeved on the two long-side rods, and the two ends of the connecting rod are respectively connected to the ends of the two bushings. The central parts are connected. The inner wall of the casing and the side wall of the long-side rod are both smooth, and the sleeve of the movable part is sleeved on the long-side rod of the rectangular frame, which can ensure that the movable part moves along the long-side rod of the rectangular frame to avoid its Off the X-axis direction.

A further technical solution is: the elastic part II includes four horizontal springs and two liquid viscous dampers, and the horizontal springs and liquid viscous dampers are symmetrically arranged on both sides of the movable part, so that the movable part moves with the horizontal The deformation of the spring and hydro-viscous damper moves along the long-side rod.

A further technical solution is: the horizontal spring is sleeved on the long-side rod, one end of the horizontal spring is connected to the end of the long-side rod, and the other end of the horizontal spring is connected to the end of the sleeve; One end of the liquid viscous damper is connected to the middle part of the short-side rod, and the other end of the liquid viscous damper is connected to the middle part of the connecting rod.

The horizontal spring is sleeved on the long-side rod, and the liquid viscous damper is connected between the short-side rod and the connecting rod, so that the deformation direction of the horizontal spring and the liquid viscous damper is along the X-axis direction.

A further technical solution is: the cross-section of the long-side rod is circular, and the cross-section of the short-side rod is rectangular. The cross-section of the long-side rod is circular to form a smooth surface and cooperate with the horizontal spring and the bushing; the cross-section of the short-side rod is rectangular to facilitate the installation of the liquid viscous damper.

A further technical solution is: a box is provided above the bottom plate to cover the whole device. The box protects the device and prevents the device from being corroded and damaged by external forces.

The beneficial effects of the present invention are:

1. When the device is under the action of earthquake or wind load, with the increase of structural force and deformation, energy-dissipating devices such as elastic component I, elastic component II and/or mass pendulum are the first to produce greater damping, consuming a large amount of energy input into the structure Energy, so that the main structure avoids entering the obvious inelastic state and quickly attenuates the dynamic response of the structure to protect the main structure.

2. The quality block of the mass pendulum is equipped with a liquid so that the mass pendulum forms a tuned liquid damper, thereby achieving double vibration reduction. Due to the fluidity of the liquid, when shaking occurs, the liquid flows in all directions with external excitation, which can realize Dual vibration damping control in multiple directions, good vibration damping effect.

3. The damping control in multiple directions shares one mass, that is, the mass block of the mass pendulum, which effectively reduces the burden on the structure.

4. The frequency of the vibration damping device can be adjusted by changing the stiffness of the springs in the elastic part I and elastic part II, the length of the swing rod in the mass pendulum, the liquid level height of the liquid in the mass block, and the quality of the mass block. wide.

5. The principle of vibration reduction control belongs to passive control, which is convenient for processing, does not require energy input, is easy to implement and has high safety.

6. It can reduce the horizontal two-way and vertical response of the structure, avoid the resonance effect, and fully ensure the safety of the building structure. It is not only suitable for the vibration reduction of new building structures, but also for the vibration reduction control of existing building structures. It is suitable for building structures with long spans, high towers, complex shapes and high safety requirements, and can produce good economic and social benefits.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the embodiment of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

FIG. 3 is a schematic top view of an embodiment of the present invention.

In the figure: 1 bottom plate, 2 vertical spring, 3 sleeve, 4 cover plate, 5 support rod, 6 one-way hinge, 7 swing rod, 8 mass block, 9 horizontal spring, 10 bushing, 11 connecting rod, 12 short Side bars, 13 long side bars, 14 liquid viscous dampers, and 15 boxes.

detailed description

The present invention will be further described below in conjunction with accompanying drawing of description and specific embodiment:

As shown in Figure 1 and Figure 2. The multi-dimensional double-adjustable damping control device includes a rectangular bottom plate 1, on which four cylindrical sleeves 3 are arranged, and the four cylindrical sleeves 3 are arranged in a rectangular shape. The vertical spring 2 deformed in the direction, the top of the vertical spring 2 is provided with a circular cover plate 4 that can move up and down along the sleeve 3, the top of the cover plate 4 is connected to the support rod 5, the vertical spring 2, the sleeve 3, the cover The plate 4 and the support rod 5 constitute the elastic part I.

The top of the support rod 5 is provided with a rectangular frame. The rectangular frame includes two long side rods 13 and two short side rods 12. The four corners of the rectangular frame are fixedly connected to the tops of the four support rods 5 respectively. The section of the long-side bar 13 is circular, and the section of the short-side bar 12 is rectangular.

Sleeves 10 are respectively movably sleeved on the two long-side rods 13, and connecting rods 11 are connected between the two sleeves 10. The pipe 10 and the connecting rod 11 constitute an "I"-shaped movable part.

The two sides of the "I"-shaped movable part are elastic parts II. The elastic part II includes four horizontal springs 9 and two liquid viscous dampers 14. The horizontal springs 9 and the liquid viscous dampers 14 are symmetrically arranged on the movable parts. On both sides, the movable part moves along the long-side bar with the deformation of the horizontal spring 9 and the liquid viscous damper 14 .

The horizontal spring 9 is sleeved on the long side rod 13, one end of the horizontal spring 9 is connected with the end of the long side rod 13, and the other end of the horizontal spring 9 is connected with the end of the sleeve 10; One end of the liquid viscous damper 14 is connected to the middle part of the short-side rod 12 , and the other end of the liquid viscous damper 14 is connected to the middle part of the connecting rod 11 .

A mass pendulum is connected below the connecting rod 11, the mass pendulum includes a swing rod 7 and a mass block 8, the top of the swing rod 7 is connected to the connecting rod 11 through a one-way hinge 6, and the bottom end of the swing rod 7 is connected to the mass block 8, The mass block 8 is an arc-shaped tube closed at both ends, and water is housed in the cavity inside the arc-shaped tube.

Described sleeve 3 is welded with base plate 1, and its inner wall is smooth.

The vertical spring 2 is consolidated with the bottom plate 1 and has a diameter slightly smaller than that of the sleeve 3 .

The cover plate 4 is fixedly connected with the upper support rod 5 and the lower vertical spring 2, and its diameter is slightly smaller than that of the sleeve 3, so it can slide up and down.

The inner wall of the sleeve 10 is smooth, and can slide to the greatest extent along the direction of the long side bar 13 of the rectangular frame.

A box body 15 is arranged above the bottom plate 1 to cover the whole device.

The design of the stiffness of the spring, the length of the swing rod 7 and the liquid level of the water in the mass block 8 ensures that the frequency of the damping control device of the present invention is consistent with the vibration frequency of the structure. The function of the sleeve 3 only allows the support rod 5 to compress the vertical spring 2 to move up and down, so as to realize the vertical vibration damping effect.

The present invention uses one-way hinge 6 to sequentially rigid swing rod 7 and mass block 8. When vertical vibration occurs, mass block 8 will not jump vertically, ensuring that vibration in other directions and vertical vibration do not affect each other.

For the convenience of understanding of the present invention, the present invention will be further described below in conjunction with its working principle:

Install the device at an appropriate position of the main structure of the building. When the main structure of the building is subjected to loads such as earthquakes or winds, a vibration response will occur, which will then drive the device to vibrate together. Due to the complex vibration of the main structure of the building, vibrations in multiple directions often exist at the same time. At this time, the support rod 5 will compress the vertical spring 2 to move up and down under the action of vibration, and the "I"-shaped movable part will move left and right under the action of vibration. Moving and compressing the elastic part II to move, the mass pendulum will swing in the front and back direction, driving the water in the mass block 8 to shake.

The inertial force generated by the movement of the support rod 5 reacts on the main structure of the building to realize the vibration reduction control in the up and down direction (Z-axis direction); Vibration control in the X-axis direction); the inertial force generated by the swing of the mass pendulum reacts on the main structure of the building to achieve vibration control in the front-rear direction (Y-axis direction).

At the same time, the water in the mass block 8 sloshes under the action of the vibration. Due to the flow characteristics of the water, the water will flow in multiple directions, which can realize double vibration reduction control in multiple directions, and the vibration reduction effect is good.

The frequency of the damping device can be adjusted by changing the stiffness of the springs in the elastic part I and elastic part II, the length of the swing rod 7 in the mass pendulum and the liquid level of the liquid in the mass block 8, and has a wide range of applications.

The shape of the mass block of the present invention is not limited to the arc tube described in the embodiment, and hollow cavities of other shapes can be used; the liquid arranged in the mass block of the present invention is not limited to the water described in the embodiment, and other fluids with good fluidity can be used. , non-toxic and tasteless liquid; the connection mode between the mass pendulum and the movable parts of the present invention is not limited to a one-way hinge, and other limiting devices can be set to realize the one-way swing of the mass pendulum.

The above is only a preferred embodiment of the present invention, not all embodiments of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention , should be included within the protection scope of the present invention.

Except for the technical features described in the description, the rest of the technical features are known to those skilled in the art. In order to highlight the innovative features of the present invention, the above technical features will not be repeated here.

Claims (10)

1. The multi-dimensional double-adjustable damping control device is characterized in that it includes a base plate, an elastic part I, an elastic part II, a movable part and a mass pendulum, The bottom plate is used to carry the whole device; The bottom end of the elastic part 1 is fixedly connected to the base plate, the top of the elastic part 1 is provided with a support rod, and the deformation of the elastic part 1 along the Z-axis direction drives the support rod to move in the Z-axis direction, so as to realize the vibration reduction in the Z-axis direction; The elastic part II and the movable part are located above the elastic part I, and the elastic part II is symmetrically arranged on both sides of the movable part, and the movable part moves in the X-axis direction with the deformation of the elastic part II, so as to realize the vibration reduction in the X-axis direction; The mass pendulum is arranged at the center of the lower surface of the movable part. The mass pendulum is a one-way pendulum and swings in the Y-axis direction to achieve vibration reduction in the Y-axis direction. 2. The multi-dimensional double adjustable vibration damping control device according to claim 1, wherein the mass pendulum includes a swing rod and a mass block, the top of the swing rod is connected to the movable part through a one-way hinge, and the swing rod The bottom end is connected with a mass block; liquid is provided in the mass block to make the mass pendulum form a tuned liquid damper, thereby achieving double vibration reduction. 3. The multi-dimensional dual adjustable vibration damping control device according to claim 2, wherein the mass block is an arc-shaped tube with both ends closed, and the cavity inside the arc-shaped tube is filled with water. 4. The multi-dimensional dual adjustable damping control device according to claim 1, characterized in that, said elastic member 1 comprises four vertical springs, the four vertical springs are arranged in a rectangle, and the four vertical springs Sleeves are sleeved on the outside to make them deform in the vertical direction; the bottom ends of the vertical springs and the sleeves are fixedly connected to the bottom plate, and the top of the vertical springs is connected to a cover plate, and the cover plate follows the deformation of the vertical springs. Moving within the sleeve, the support rod is a longitudinal rod and is attached to the top of the cover plate. 5. The multi-dimensional double-adjustable damping control device according to claim 4, wherein the elastic part II and the movable part are arranged on a rectangular frame, and the rectangular frame is arranged on the top of the support bar, and the rectangular frame The frame includes two long-side rods and two short-side rods, and the four corners of the rectangular frame are respectively fixedly connected with the tops of the four support rods. 6. The multi-dimensional double adjustable vibration damping control device according to claim 5, wherein the movable part comprises two bushings and a connecting rod, and the two bushings are movably nested on the two long sides respectively. On the rod, the two ends of the connecting rod are respectively connected with the central parts of the two bushings. 7. The multi-dimensional dual adjustable damping control device according to claim 6, characterized in that, said elastic component II comprises four horizontal springs and two liquid viscous dampers, and the horizontal springs and liquid viscous dampers The movable parts are arranged symmetrically on both sides, so that the movable parts move along the long-side rods with the deformation of the horizontal spring and the liquid viscous damper. 8. The multi-dimensional double-adjustable damping control device according to claim 7, wherein the horizontal spring is sleeved on the long-side rod, and one end of the horizontal spring is connected to the end of the long-side rod, The other end of the horizontal spring is connected to the end of the sleeve; one end of the liquid viscous damper is connected to the middle part of the short-side rod, and the other end of the liquid viscous damper is connected to the middle part of the connecting rod. 9 . The multi-dimensional dual adjustable vibration damping control device according to claim 5 , wherein the cross-section of the long-side rod is circular, and the cross-section of the short-side rod is rectangular. 10. The multi-dimensional double adjustable vibration damping control device according to claim 1, wherein a box is provided above the bottom plate to cover the whole device.