Corridor damper of active and semi-active hybrid control

Abstract

The application provides a gallery damper of active and semi-active hybrid control. The gallery damper of active and semi-active hybrid control can be applied to a main structure and comprises a semi-active control unit, an active control unit and a structure monitoring unit; the main structure comprises at least two tower buildings; the at least two tower buildings are connected through a gallery; the at least two tower buildings and the gallery are arranged with the semi-active control unit and the active control unit; the structure monitoring unit is suitable for collecting state signals of the at least two tower buildings and the gallery and controlling the semi-active control unit to perform semi-active control on the main structure and controlling the active control unit to perform active control on the main structure based on the state signals. By using the application, vibration conditions and safety of each tower building and the gallery in the main structure can be monitored and analyzed in real time, so that the safety, reliability and durability of the connected structure are improved.

Description

Technical Field

[0001] This application belongs to the fields of civil engineering and vibration control technology, specifically a corridor damper with active and semi-active hybrid control. Background Technology

[0002] Tuned mass dampers have attracted widespread attention due to their advantages such as minimal modification to the original structure, convenient construction, and significant vibration reduction and control effects, and have been applied in wind and earthquake resistance of high-rise building structures both domestically and internationally. However, traditional tuned mass dampers suffer from the drawback of frequency tuning sensitivity, and damage to the main structure itself can affect the vibration reduction effect of the tuned mass damper. Moreover, there is a difference between the estimated natural frequency of the structure during design and its actual natural frequency. Therefore, how to achieve adaptive control of the tuned mass damper, enabling it to adjust its own frequency in real time to be close to the frequency of the structure to achieve a good vibration reduction effect, is a problem that needs to be solved.

[0003] Multi-tower interconnected structures are a new type of complex structural system, consisting of several towers of different heights, shapes, and structural dynamic characteristics connected by corridors or other means. How to rationally design multi-tower interconnected structures and apply energy dissipation and seismic reduction measures to minimize damage under earthquake conditions while ensuring safety and functionality remains a problem to be solved.

[0004] Magnetorheological elastomers (MREs) are elastomers created by incorporating micron-sized ferromagnetic particles into polymers and curing them under a magnetic field, resulting in a chain-like or columnar structure within the matrix. The elastic modulus of this material can vary with the applied magnetic field strength, making it a promising candidate for wide applications in variable stiffness devices. Furthermore, compared to ordinary magnetorheological fluids, MREs possess not only advanced features such as controllability, reversibility, and rapid response, but also unique advantages like good stability. How to rationally apply MREs to the intelligent control of civil engineering structures remains an unresolved issue.

[0005] Application content

[0006] The purpose of this application is to provide a hybrid active and semi-active control corridor damper that can monitor and analyze the vibration status and safety of each tower and corridor in the main structure in real time, thereby improving the safety, reliability and durability of the connected structure.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A hybrid active and semi-active control corridor damper, applicable to a main structure, includes a semi-active control unit, an active control unit, and a structural monitoring unit. The main structure includes at least two towers connected by a corridor. The semi-active control unit and the active control unit are arranged in the at least two towers and the corridor. The structural monitoring unit is adapted to collect status signals of the at least two towers and the corridor, and based on the status signals, control the semi-active control unit to perform semi-active control of the main structure, and control the active control unit to perform active control of the main structure.

[0009] Optionally, the semi-active control unit includes a magnetorheological elastomer support; each of the at least two towers is connected to the connecting corridor via one of the magnetorheological elastomer supports.

[0010] Optionally, the semi-active control unit further includes a current controller connected to the magnetorheological elastomer support; the structural monitoring unit includes a sensor and a processor; each of the at least two towers and the connecting corridor is equipped with the sensor to collect status signals of the at least two towers and the connecting corridor; the processor is connected to the sensor and the current controller respectively, and is adapted to receive and control the current controller to change the stiffness and damping of the magnetorheological elastomer support based on the status signals, so as to perform semi-active control of the main structure.

[0011] Optionally, the sensor includes an acceleration sensor, a displacement sensor, and a velocity sensor; each of the at least two towers is equipped with the acceleration sensor, the displacement sensor, and the velocity sensor; the connecting corridor is equipped with the acceleration sensor; the status signal includes the acceleration signal, displacement signal, and velocity signal of each of the at least two towers, as well as the acceleration signal of the connecting corridor.

[0012] Optionally, the semi-active control unit is adapted to function as a semi-active shared tuned mass damper; the connecting corridor is adapted to function as the mass block of the semi-active shared tuned mass damper and, together with the magnetorheological elastomer support, to achieve semi-active control of the main structure.

[0013] Optionally, the active control unit includes a hydraulic actuator and a reaction frame; the hydraulic actuator and the reaction frame are arranged on each of the at least two towers; and the hydraulic actuator and the reaction frame located on the same tower are connected.

[0014] Optionally, the reaction frames arranged on the two towers located at both ends of the at least two towers are each connected to both ends of the connecting corridor via a hydraulic actuator.

[0015] Optionally, the structural monitoring unit includes sensors and a processor; each of the at least two towers and the connecting corridor is equipped with the sensors to collect status signals of the at least two towers and the connecting corridor; the processor is connected to the sensors and the hydraulic actuators respectively, and is adapted to receive and control the hydraulic actuators based on the status signals to apply active control force to each of the at least two towers through the reaction frame, so as to actively control the main structure.

[0016] Optionally, the sensor includes an acceleration sensor; each of the at least two towers and the connecting corridor is equipped with the acceleration sensor; the status signal includes the acceleration signal of each of the at least two towers and the connecting corridor.

[0017] Optionally, the active control unit is adapted to function as an active shared tuned mass damper; the connecting corridor is adapted to function as the mass block of the active shared tuned mass damper and, together with the hydraulic actuator, to achieve active control of the main structure.

[0018] Compared with the prior art, this application has at least the following beneficial effects:

[0019] For example, the active and semi-active hybrid control corridor damper provided in this application can monitor and analyze the vibration status and safety of each tower and corridor in the main structure in real time, thereby improving the safety, reliability and durability of the connected structure.

[0020] For example, the corridor damper with active and semi-active hybrid control provided in this application can also use the corridor as the mass block of the semi-active control unit, and work together with the magnetorheological elastomer support to achieve semi-active control of the main structure under seismic action.

[0021] For example, the corridor damper with active and semi-active hybrid control provided in this application can also use the corridor as the mass block of the active control unit, and work with the hydraulic actuator to achieve active control of the main structure under seismic action.

[0022] For example, the active and semi-active hybrid control corridor damper provided in this application is suitable as a shared tuned mass damper. Furthermore, the corridor is suitable as the mass block portion of this shared tuned mass damper, and the magnetorheological elastomer support is suitable for providing stiffness and damping components for the shared tuned mass damper, thereby forming a shared tuned mass damper connecting the various towers.

[0023] For example, the active and semi-active hybrid control corridor damper provided in this application can control the hydraulic actuator to directly apply active control force to each tower through the reaction frame to reduce its seismic response; it can also adjust the stiffness and damping of the magnetorheological elastomer support so that the natural frequency of each connection part is the same as the natural frequency of the connected tower, so as to absorb and dissipate the kinetic energy of each tower to the maximum extent and reduce its vibration; thereby achieving the best energy dissipation and vibration reduction effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the application of a corridor damper with active and semi-active hybrid control in the connection of two towers in the embodiments of this application.

[0025] Figure 2 This is a schematic diagram illustrating the application of the active and semi-active hybrid control corridor damper in the three-tower connection in the embodiments of this application.

[0026] Figure 3 This is a control principle diagram of the semi-active control unit in the embodiments of this application;

[0027] Figure 4 This is a control principle diagram of the active control unit in the embodiments of this application.

[0028] Explanation of reference numerals in the attached diagram: 1-Left tower, 2-Right tower, 3-Connecting corridor, 4-Magnetorheological elastomer support, 5-Hydraulic actuator, 6-Reaction frame, 7-Acceleration sensor, 8-Displacement sensor, 9-Velocity sensor, 10-Processor, 11-Current controller, 12-Central tower. Detailed Implementation

[0029] To make the objectives, features, and beneficial effects of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described below are merely for explaining this application and not for limiting it. Furthermore, descriptions of identical or similar components in different embodiments, as well as descriptions of components, features, effects, etc., belonging to the prior art, may be omitted.

[0030] Furthermore, for ease of description, only the units relevant to this application are shown in the accompanying drawings, not the entire structure. Also, the same or similar reference numerals may be used in the drawings to refer to the same or similar components in different embodiments.

[0031] Figure 1 This is a schematic diagram illustrating the application of a corridor damper with active and semi-active hybrid control in the connection of two towers in the embodiments of this application. Figure 2 This is a schematic diagram illustrating the application of the active and semi-active hybrid control corridor damper in the three-tower connection in the embodiments of this application. Figure 3This is a control principle diagram of the semi-active control unit in the embodiments of this application; Figure 4 This is a control principle diagram of the active control unit in the embodiments of this application.

[0032] Reference Figures 1 to 4 This application provides a corridor damper with active and semi-active hybrid control, which is applied to the main structure to achieve energy dissipation and vibration reduction of the main structure.

[0033] In some embodiments, the main structure includes at least two towers connected by a connecting corridor 3.

[0034] Reference Figure 1 In some embodiments, the main structure is a two-tower connected structure, including a left tower 1 and a right tower 2, and the left tower 1 and the right tower 2 are connected by a corridor 3.

[0035] Reference Figure 2 In other embodiments, the main structure is a three-tower connected structure, including a left tower 1, a middle tower 12 and a right tower 2 arranged in sequence, and the left tower 1, the middle tower 12 and the right tower 2 are connected by a corridor 3.

[0036] In some other embodiments, the main structure may also be a four-tower connected structure, a five-tower connected structure, a six-tower connected structure, or a more than six-tower connected structure.

[0037] In some embodiments, the active and semi-active hybrid control corridor damper provided in this application may include a semi-active control unit, an active control unit, and a structural monitoring unit connected to the semi-active control unit and the active control unit respectively.

[0038] In some embodiments, the semi-active control unit may include a magnetorheological elastomer support 4 and a current controller 11 connected to the magnetorheological elastomer support 4.

[0039] In some embodiments, each tower in the main structure is connected to the connecting corridor 3 via a magnetorheological elastomer support 4. In a specific implementation, the connecting corridor 3 is located above the main structure, and each magnetorheological elastomer support 4 is located between the connecting corridor 4 and the main structure, with the upper and lower ends of each magnetorheological elastomer support 4 connected to the connecting corridor 3 and the top of each tower in the main structure, respectively.

[0040] In some embodiments, the magnetorheological elastomer supports 4 arranged on the towers at both ends, namely the leftmost and rightmost ends, of the main structure can be arranged symmetrically on the left and right sides and connected to the lower parts of the left and right ends of the connecting corridor 3 respectively.

[0041] In some embodiments, the magnetorheological elastomer support 4 arranged on the leftmost tower of the main structure can be located at the rightmost end of the top of the tower; the magnetorheological elastomer support 4 arranged on the rightmost tower of the main structure can be located at the leftmost end of the top of the tower.

[0042] In some embodiments, the magnetorheological elastomer support 4 arranged on the tower located in the middle part of the main structure can be located at the middle position of the top of the corresponding tower.

[0043] In some embodiments, the structural monitoring unit may include an acceleration sensor 7, a displacement sensor 8, a velocity sensor 9, and a processor 10. The processor 10 is connected to the acceleration sensor 7, the displacement sensor 8, and the velocity sensor 9, respectively.

[0044] In practice, each tower of the main structure is equipped with at least one acceleration sensor 7, at least one displacement sensor 8, and at least one velocity sensor 9 on its top floor to collect acceleration signals, displacement signals, and velocity signals of each tower, respectively.

[0045] In some embodiments, the accelerometer 7, displacement sensor 8, and velocity sensor 9 may be arranged on the top side of each tower in the main structure, and the corresponding sensors arranged on the top side of each tower are aligned in the horizontal direction.

[0046] In some embodiments, the acceleration sensor 7, displacement sensor 8, and velocity sensor 9 are arranged symmetrically on the left and right sides of the towers located at both ends of the main structure, namely the leftmost and rightmost ends.

[0047] In practice, at least one acceleration sensor 7 is also arranged at the end of the connecting corridor 3 to collect the acceleration signal of the connecting corridor 3.

[0048] In specific implementation, the processor 10 is adapted to receive acceleration signals, displacement signals and velocity signals collected by the acceleration sensor 7, displacement sensor 8 and velocity sensor 9 respectively, and to monitor and analyze the vibration status and safety of each tower and connecting corridor 3 in the main structure in real time based on these signals.

[0049] Specifically, the processor 10 is adapted to monitor and analyze the vibration status and safety of each tower and connecting corridor 3 in the main structure by monitoring whether the response amplitude of these signals exceeds a preset amplitude and by performing a fast Fourier transform on these signals to obtain their spectral characteristics in order to analyze whether their frequency changes.

[0050] In a specific implementation, the processor 10 is also connected to the current controller 11 and is adapted to perform semi-active control of the main structure by controlling the current controller 11 to change the stiffness and damping of the magnetorheological elastomer support 4 after processing these signals.

[0051] In practice, these signals include acceleration, displacement and velocity signals of each tower in the main structure, as well as acceleration signals of connecting corridor 3.

[0052] Specifically, the processor 10 is adapted to calculate the real-time optimal stiffness and damping of the connecting corridor damper of this application using methods such as state-space method and linear quadratic Gaussian algorithm. Based on the calculated stiffness and damping, the processor 10 changes the current flow of the magnetorheological elastomer support 4 through the current controller 11 to change the magnetic field and mechanical characteristics of the magnetorheological elastomer support 4, thereby changing the stiffness and damping of the magnetorheological elastomer support 4 so that the natural frequency of each connection part is the same as the natural frequency of the connected tower, so as to absorb and dissipate the kinetic energy of each tower to the maximum extent and reduce its vibration, thereby realizing semi-active control of the main structure.

[0053] In specific implementation, the semi-active control unit is suitable as a semi-active shared tuned mass damper, and the connecting corridor 3 is also suitable as the mass block of the semi-active shared tuned mass damper, so as to cooperate with the magnetorheological elastomer support 4 whose stiffness and damping can be changed, to jointly realize the semi-active control of the main structure.

[0054] In some embodiments, the active control unit may include a hydraulic actuator 5 and a reaction frame 6.

[0055] In some embodiments, each tower in the main structure is equipped with a hydraulic actuator 5 and a reaction frame 6, and the hydraulic actuators 5 and reaction frames 6 located on the same tower are connected. In a specific implementation, both the hydraulic actuators 5 and the reaction frames 6 can be located at the top of the tower.

[0056] In some embodiments, two reaction frames 6 arranged on the towers at both ends of the main structure, namely the leftmost and rightmost ends, are each connected to the outer sides of the left and right ends of the connecting corridor 4 via a hydraulic actuator 5. In this case, the two ends of the hydraulic actuator 5 are connected to the corresponding reaction frame 6 and the outer side of the end of the connecting corridor 4, respectively.

[0057] In some embodiments, the reaction frame 6 may be a steel structure support.

[0058] In other embodiments, the reaction frame 6 may also be a concrete support.

[0059] In practice, the processor 10 is also connected to the hydraulic actuator 5 and is adapted to control the hydraulic actuator 5 to apply the active control force to each tower through the reaction frame 6 based on the acceleration signal of each tower and the connecting corridor 3, so as to actively control the main structure.

[0060] In specific implementation, the processor 10 is adapted to calculate the real-time optimal active control force of the hydraulic actuator 5 based on the above signal through methods such as long short-term memory artificial neural networks, and control the hydraulic actuator 5 to act on each tower through the reaction frame 6 based on the calculated active control force.

[0061] In practical implementation, the active control unit is suitable as an active shared tuned mass damper, and the connecting corridor 3 is also suitable as the mass block of the active shared tuned mass damper, so as to cooperate with the hydraulic actuator 5 to achieve active control of the main structure.

[0062] In specific implementation, the active and semi-active hybrid control corridor damper provided in this application embodiment is suitable as a shared tuned mass damper. Furthermore, the corridor 3 is suitable as the mass block portion of this shared tuned mass damper, and the magnetorheological elastomer support 4 is suitable for providing stiffness and damping to the shared tuned mass damper, thereby forming a shared tuned mass damper connecting the various towers.

[0063] In practical implementation, the active and semi-active hybrid control corridor damper provided in this application embodiment can both control the hydraulic actuator 5 to directly apply active control force to each tower through the reaction frame 6 to reduce its seismic response; and adjust the stiffness and damping of the magnetorheological elastomer support 4 so that the natural frequency of each connection part is the same as the natural frequency of the connected tower, so as to absorb and dissipate the kinetic energy of each tower to the maximum extent and reduce its vibration; thereby achieving the best energy dissipation and vibration reduction effect.

[0064] In specific implementation, the active and semi-active hybrid control corridor damper provided in this application embodiment can be applied to a variety of building structures. It can be applied not only to the connection between towers of equal height, but also to the connection between independent towers of unequal height, and to the connection between towers in a large-chassis multi-tower structure, etc.

[0065] In some embodiments, the active and semi-active hybrid control corridor damper provided in this application can be applied to a shear-type structural system, a bending-type structural system, or a bending-shear-type structural system.

[0066] In some embodiments, the active and semi-active hybrid control corridor damper provided in this application can not only be installed on the top floor of the main structure, but also between other floors, or at least two can be installed in parallel between different floors, for example, two to six can be installed.

[0067] Although specific embodiments of this application have been described above, these embodiments are not intended to limit the scope of this application, even when only a single embodiment is described with respect to a particular feature. The examples of features provided in this application are intended to be illustrative and not limiting, unless otherwise stated. In practice, one or more technical features of dependent claims may be combined with technical features of independent claims as needed and where technically feasible, and the technical features of corresponding claims may be combined in any suitable manner rather than solely by the specific combinations listed in the claims.

[0068] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. A connecting corridor damper with hybrid active and semi-active control, characterized in that, It can be applied to the main structure and includes a semi-active control unit, an active control unit, and a structural monitoring unit; the main structure includes at least two towers; the at least two towers are connected by a connecting corridor; the semi-active control unit and the active control unit are arranged in the at least two towers and the connecting corridor; the structural monitoring unit is adapted to collect the status signals of the at least two towers and the connecting corridor, and control the semi-active control unit to perform semi-active control on the main structure and control the active control unit to perform active control on the main structure based on the status signals; The semi-active control unit includes a magnetorheological elastomer support (4); each of the at least two towers is connected to the connecting corridor (3) through one of the magnetorheological elastomer supports (4); The semi-active control unit further includes a current controller (11) connected to the magnetorheological elastomer support (4); the structural monitoring unit includes a sensor and a processor (10); each of the at least two towers and the connecting corridor is equipped with the sensor to collect the status signals of the at least two towers and the connecting corridor; the processor (10) is connected to the sensor and the current controller (11) respectively, and is adapted to receive and control the current controller (11) to change the stiffness and damping of the magnetorheological elastomer support (4) based on the status signals, so as to perform semi-active control of the main structure; The active control unit includes a hydraulic actuator (5) and a reaction frame (6); the hydraulic actuator (5) and the reaction frame (6) are arranged on each of the at least two towers; and the hydraulic actuator (5) and the reaction frame (6) located on the same tower are connected to each other.

2. The corridor damper according to claim 1, characterized in that, The sensors include an acceleration sensor (7), a displacement sensor (8), and a velocity sensor (9); each of the at least two towers is equipped with the acceleration sensor (7), the displacement sensor (8), and the velocity sensor (9); the connecting corridor (3) is equipped with the acceleration sensor (7); the status signals include the acceleration signal, displacement signal, and velocity signal of each of the at least two towers, as well as the acceleration signal of the connecting corridor.

3. The corridor damper according to claim 1, characterized in that, The semi-active control unit is adapted to function as a semi-active shared tuned mass damper; the connecting corridor (3) is adapted to function as the mass block of the semi-active shared tuned mass damper and, together with the magnetorheological elastomer support (4), achieves semi-active control of the main structure.

4. The corridor damper according to claim 1, characterized in that, The reaction frames (6) arranged on the two towers at both ends of the at least two towers are each connected to both ends of the connecting corridor (3) by a hydraulic actuator (5).

5. The connecting corridor damper according to claim 1, characterized in that, The structural monitoring unit includes a sensor and a processor (10); each of the at least two towers and the connecting corridor (3) is equipped with the sensor to collect the status signals of the at least two towers and the connecting corridor (3); the processor (10) is connected to the sensor and the hydraulic actuator (5) respectively, and is adapted to receive and control the hydraulic actuator (5) based on the status signal to apply the active control force to each of the at least two towers through the reaction frame (6) to actively control the main structure.

6. The corridor damper according to claim 5, characterized in that, The sensor includes an acceleration sensor (7); each of the at least two towers and the connecting corridor (3) is equipped with the acceleration sensor (7); the status signal includes the acceleration signal of each of the at least two towers and the connecting corridor.

7. The corridor damper according to claim 5, characterized in that, The active control unit is adapted to act as an active shared tuned mass damper; the connecting corridor (3) is adapted to act as the mass block of the active shared tuned mass damper and, together with the hydraulic actuator (5), achieves active control of the main structure.

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