TLD and TMD interconversion high-rise structure damping device and damping method

Abstract

The application discloses a high-rise structure damping device capable of realizing conversion between TLD and TMD and a damping method, and belongs to the technical field of high-rise structure damping devices. The damping device is arranged on a main structure; the damping device comprises a water tank with a closed cavity, wherein the water tank is in a ring structure and is suspended on the outside of the main structure; a floating plate is arranged in the closed cavity of the water tank; the closed cavity of the water tank is communicated with the outside through a water inlet pipe and a water outlet pipe; a bellows section is arranged on the water inlet pipe and the water outlet pipe; a control system for controlling the on-off of the water inlet pipe and the water outlet pipe is arranged on the water tank; and a group of vibration isolation members are arranged between the water tank and the main structure. The application can realize efficient damping of the main structure in a full frequency domain, can realize quick conversion between TLD and TMD damping modes, can reduce the load bearing of connecting members on the basis of meeting the damping needs of various states of the main structure, and can prolong the service life of the whole part and device.

Description

Technical Field

[0001] This invention belongs to the technical field of vibration reduction devices for tall structures, specifically relating to a vibration reduction device and method for tall structures that can realize mutual conversion between TLD and TMD. Background Technology

[0002] With the development of society and economy, the design and construction methods of tall structures have been continuously improved. The scale of tall structures, including tall buildings, tall towers, chimneys, and tall wind turbines, is constantly expanding. With the emergence of new materials and new processing technology, these tall structures are constantly developing towards larger and taller directions. Tall structures often exhibit highly flexible structures and are greatly affected by wind loads. Especially when the resonant frequency of the main structure is excited under the action of wind load, the vibration amplitude of the main structure is large, which can easily lead to damage at the bottom of the structure and cause major accidents and losses. Therefore, vibration control of tall structures is crucial.

[0003] Currently, common vibration control methods for structures include tuned mass dampers (TMDs) and tuned liquid dampers (TLDs). Common TMDs have a narrow frequency band, while shallow-water TLDs offer better vibration reduction. However, when the main structure resonates and its vibration amplitude is large, the vibration reduction performance of shallow-water TLDs becomes insufficient. In such cases, the vibration reduction performance of a large-mass TMD is far superior to that of a shallow-water TLD. Summary of the Invention

[0004] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a vibration reduction device and method for tall structures that can realize the mutual conversion between TLD and TMD, and can achieve efficient vibration reduction in the entire frequency domain.

[0005] This invention provides the following technical solution:

[0006] A high-rise structure vibration damping device capable of converting between TLD and TMD is installed on the main structure. It includes a water tank with a sealed cavity inside, the water tank having a ring-shaped structure and being suspended on the outside of the main structure. A float plate is installed in the sealed cavity of the water tank. The sealed cavity of the water tank is connected to the outside through an inlet pipe and an outlet pipe. Both the inlet pipe and the outlet pipe are equipped with corrugated pipe sections. The water tank is equipped with a control system to control the opening and closing of the inlet pipe and the outlet pipe. A set of vibration isolation components is installed between the water tank and the main structure.

[0007] Furthermore, an embedded steel ring is fixedly installed on the main structure, and a set of suspension brackets are evenly distributed on the outer side of the embedded steel ring. Suspension steel wire ropes are provided on the suspension brackets, and the water tank is suspended on the suspension brackets by a set of suspension steel wire ropes.

[0008] Furthermore, the float is provided with lifting lugs, and a set of support plates for supporting the float is provided in the sealed cavity of the water tank.

[0009] Furthermore, the control system includes a pressure-type water level sensor and a controller. The pressure-type water level sensor is located at the bottom of the water tank and is electrically connected to the controller via a transmission line. The controller has a built-in acceleration sensor. Based on the feedback from the pressure-type water level sensor and the acceleration sensor, the controller controls the solenoid valves located at the inlet and outlet pipes to regulate the inlet and outlet water of the water tank.

[0010] Furthermore, the vibration isolator is a wire rope vibration isolator, one side of which is connected to the inner connecting plate set on the main structure, and the other side is connected to the outer connecting plate set on the outer wall of the water tank.

[0011] Furthermore, the corrugated pipe sections on the inlet and outlet pipes are installed near the connection points with the water tank.

[0012] The vibration reduction method for tall structure vibration reduction devices that enable mutual conversion between TLD and TMD includes the following steps:

[0013] S1. When the acceleration sensor detects that the vibration amplitude of the water tank is less than the set threshold, the vibration damping device is a normal shallow water type TLD. At this time, the wire rope vibration isolator is regarded as a rigid element.

[0014] S2. When the main structure resonates and the acceleration sensor detects that the vibration amplitude of the water tank is greater than the set threshold, the controller sends a signal to open the solenoid valve to add water to the water tank. The water pressure drives the float plate to rise until the water tank is full. The water level sensor sends feedback water level information to the controller to control the solenoid valve to close and stop adding water. The vibration damping device is converted into a TMD vibration damping device. The TMD vibration damping device generates a reverse resonance behavior with the main structure. During the vibration process, part of the vibration energy of the main structure is converted into the kinetic energy of the water tank and the elastic potential energy of the wire rope vibration isolator. The other part is dissipated through the damping of the wire rope vibration isolator, reducing the vibration of the main structure.

[0015] By employing the above-described technology, the beneficial effects of the present invention compared to the prior art are as follows:

[0016] 1) This invention can achieve efficient vibration reduction of the main structure in the full frequency domain, and can realize rapid switching between TLD and TMD vibration reduction modes. While meeting the vibration reduction needs of the main structure in various states, it can reduce the load on individual connecting components and extend the service life of parts and devices as a whole. It can be widely used in tall building structures, tall tower equipment, chimneys, wind turbine towers, etc.

[0017] 2) In this invention, the suspension structure design of the water tank and the corrugated pipe section structure design on the inlet and outlet water pipes, combined with the vibration isolation components set between the water tank and the main structure, form a vibration damping device that can adjust the vibration according to the vibration of the main structure.

[0018] 3) In this invention, the floating plate can prevent the water in the tank from being disturbed during the vibration reduction process, thus avoiding affecting the vibration reduction effect of the vibration reduction device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the installation structure of the embedded steel ring and suspension bracket of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation structure of the water tank and control system of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] Conversely, this invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of the invention as defined in the claims. Furthermore, to provide a better understanding of the invention, certain specific details are described in detail below. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0025] Please see Figure 1-4 A high-rise structure vibration reduction device capable of converting between TLD and TMD is installed on the main structure 1. It includes an embedded steel ring 2, a suspension bracket 3, a suspension wire rope 4, a water tank 5, a control system 6, a solenoid valve 7, an inlet pipe 8, an outlet pipe 9, vibration isolation components 10, and bolt and nut connectors 11.

[0026] Specifically, the embedded steel ring 2 can be directly embedded and installed in the main structure; the suspension bracket 3 is evenly distributed on the embedded steel ring 2, and the stiffener plate 302 of the suspension bracket is provided with bolt holes, which can be used to install bolt and nut connectors as suspension rods; the upper end of the suspension wire rope 4 is connected to the suspension rod, and the lower end is wrapped around the water tank 5 to bear the weight of the water tank.

[0027] Specifically, the water tank 5 is ring-shaped and can be configured as a 1 / 2 or 1 / 4 ring combination for easy installation. The water tank 5 has a support plate 501 inside. Under normal circumstances, the float plate 502 is above the support plate under the action of gravity. The float plate is equipped with lifting lugs 503 for easy installation. The water tank cover plate is installed on the upper part of the water tank by welding or other methods, so that the water tank forms a completely sealed space. The water tank 5 is equipped with an inlet and an outlet. The bottom of the water tank 5 is equipped with a pressure-type water level sensor 601, which can measure the water level of the water tank 5 in real time and transmit it to the controller 603 through the transmission line 602. The controller 603 has a built-in acceleration sensor. Based on the information feedback from the pressure-type water level sensor 601 and the acceleration sensor, the controller 603 controls the solenoid valves 7 of the inlet pipe 8 and the outlet pipe 9 to regulate the water inlet and outlet, thereby realizing the mutual conversion between TLD and TMD.

[0028] Under normal circumstances, the water volume in the water tank 5 is relatively small, and the water level is in the lower part of the support plate 501. At this time, the vibration damping device is a shallow water type TLD. When the vibration is small, the shallow water type TLD has a good vibration damping effect.

[0029] When the main structure resonates, the acceleration sensor and the pressure-type water level sensor 601 transmit relevant information in real time. The controller 603 opens the inlet pipe solenoid valve 7 according to the relevant information to fill the water tank 5. The float 502 gradually rises under the action of water pressure and presses on the water surface to suppress water disturbance. At this time, the water tank 5 filled with water can be regarded as a whole mass block. The vibration isolation component 10 adopts a wire rope vibration isolator. The wire rope vibration isolator is installed on the inner connecting plate 101 on the main structure 1 and the outer connecting plate 505 on the water tank 5 through bolt and nut connector 11. When the water tank 5 is filled with water, the water tank 5 as a whole is combined with the wire rope vibration isolator to convert the vibration reduction device into a TMD. The TMD with a large mass can reduce the resonance of the main structure to a greater extent. During the vibration, the wire rope vibration isolator in the TMD provides the restoring force of nonlinear soft characteristics and acts as a damping element to dissipate vibration energy.

[0030] The sections of the inlet pipe 8 and outlet pipe 9 near the inlet and outlet are all corrugated. The corrugated pipes can change shape arbitrarily with the shaking of the water tank, so that the water inlet and outlet are not affected by the vibration of the water tank 5 and the main structure 1.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tall structure vibration damping device capable of converting between TLD and TMD, installed on the main structure; characterized in that: It includes a water tank with a sealed cavity inside, which has a ring-shaped structure and is suspended outside the main structure. A float plate is installed in the sealed cavity of the water tank. The sealed cavity of the water tank is connected to the outside through an inlet pipe and an outlet pipe. Both the inlet pipe and the outlet pipe are equipped with corrugated pipe sections. The water tank is equipped with a control system to control the opening and closing of the inlet pipe and the outlet pipe. A set of vibration isolation components is installed between the water tank and the main structure.

2. The tall structure damping device capable of converting TLD and TMD according to claim 1, wherein An embedded steel ring is fixedly installed on the main structure. A set of suspension brackets are evenly distributed on the outer side of the embedded steel ring. Suspension steel wire ropes are provided on the suspension brackets. The water tank is suspended on the suspension brackets by a set of suspension steel wire ropes.

3. The tall structure damping device capable of converting TLD and TMD according to claim 1, wherein The float is equipped with lifting lugs, and a set of support plates for supporting the float is provided in the sealed cavity of the water tank.

4. The tall structure damping device capable of converting TLD and TMD according to claim 1, wherein The control system includes a pressure water level sensor and a controller. The pressure water level sensor is located at the bottom of the water tank and is connected to the controller via a transmission line. The controller has a built-in acceleration sensor. Based on the feedback from the pressure water level sensor and the acceleration sensor, the controller controls the solenoid valves located at the inlet and outlet pipes to regulate the inlet and outlet water of the water tank.

5. The high-rise structure vibration reduction device capable of converting between TLD and TMD according to claim 1, characterized in that... The vibration isolation component is a wire rope vibration isolator, one side of which is connected to the inner connecting plate set on the main structure, and the other side is connected to the outer connecting plate set on the outer wall of the water tank.

6. The high-rise structure vibration reduction device capable of converting between TLD and TMD according to claim 1, characterized in that... The corrugated pipe sections on the inlet and outlet pipes are installed near the connection points with the water tank.

7. The vibration reduction method of the tall structure vibration reduction device capable of mutual conversion between TLD and TMD according to any one of claims 1-6, characterized in that, Includes the following steps: S1. When the acceleration sensor detects that the vibration amplitude of the water tank is less than the set threshold, the vibration damping device is a normal shallow water type TLD. At this time, the wire rope vibration isolator is regarded as a rigid element. S2. When the main structure resonates and the acceleration sensor detects that the vibration amplitude of the water tank is greater than the set threshold, the controller sends a signal to open the solenoid valve to add water to the water tank. The water pressure drives the float plate to rise until the water tank is full. The water level sensor sends feedback water level information to the controller to control the solenoid valve to close and stop adding water. The vibration damping device is converted into a TMD vibration damping device. The TMD vibration damping device generates a reverse resonance behavior with the main structure. During the vibration process, part of the vibration energy of the main structure is converted into the kinetic energy of the water tank and the elastic potential energy of the wire rope vibration isolator. The other part is dissipated through the damping of the wire rope vibration isolator, reducing the vibration of the main structure.

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