Intelligent Prefabricated Hybrid Multiple Energy Dissipation Active Vibration Control Bracing Device

Abstract

The present invention discloses an intelligent prefabricated hybrid multiple energy dissipation active vibration control bracing device, which includes a steel frame, an electrorheological damper buckling-restrained brace, a data acquisition unit, a control unit and a photovoltaic curtain wall. The steel frame includes a support plate and support columns, and the support plate and support columns are assembled to form the main building structure. The electrorheological damper buckling-restrained brace is installed on the steel frame. The data acquisition unit is arranged at building joints. The photovoltaic curtain wall surrounds the outside of the steel frame. The electrorheological damper buckling-restrained brace, the data acquisition unit and the photovoltaic curtain wall are respectively connected to the control unit. The electrorheological damper buckling-restrained brace includes an electrorheological damper structure and a buckling-restrained brace structure. The electrorheological damper structure includes a sleeve, a piston and a piston rod. The sleeve is filled with electrorheological fluid. The piston is slidably installed in the sleeve. The piston rod is connected to the piston. The piston is provided with a throttle hole. The buckling-restrained brace structure includes an outer tube and an inner core. Sleeves are respectively arranged at both ends of the inner core. The outer tube is sleeved on the inner core and the sleeves.

Description

Technical Field

[0001] The present invention relates to the technical field of building structure and vibration control, and in particular to an intelligent vibration control support device combining multiple energy dissipation mechanisms with active control technology. Background Art

[0002] Traditional earthquake-resistant technologies mostly use passive earthquake-resistant systems, such as dampers and seismic isolation devices, but these systems rely on fixed damping characteristics and lack the ability to dynamically respond to different earthquake intensities, making it difficult to fully exert their effects in complex earthquake environments. Active earthquake-resistant systems can dynamically adjust structural responses based on real-time monitoring data. Although they have strong adaptability, they consume a lot of energy and are costly.

[0003] The traditional construction mode not only has a long construction period, but is also often accompanied by a large amount of construction waste and energy consumption, which puts great pressure on the environment. Therefore, how to achieve green, intelligent, efficient and environmentally friendly buildings has become an important goal of modern architectural design. Especially in earthquake-prone areas, how to improve earthquake resistance through intelligent means while reducing building energy consumption and environmental impact has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects and shortcomings of the prior art and to provide an intelligent assembled hybrid multi-energy dissipation active vibration control support device, which, through the synergistic effect of the electrorheological damper structure and the anti-buckling support structure, combines active control technology with passive energy dissipation mechanism to achieve efficient absorption and intelligent regulation of the vibration energy of the building structure, reduce the energy consumption during the operation of the building structure, and improve the seismic performance and dynamic stability of the building structure under complex vibration conditions.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An intelligent assembled hybrid multi-energy dissipation active vibration control support device comprises a steel frame, an electrorheological damping anti-buckling support, a data acquisition unit, a control unit and a photovoltaic curtain wall, wherein the steel frame comprises a support plate and a support column, the support plate and the support column are assembled in a modular manner to form a main structure of a building, the electrorheological damping anti-buckling support is installed on the steel frame, the data acquisition unit is arranged at a key position node of the building, the photovoltaic curtain wall is surrounded outside the steel frame, and the electrorheological damping anti-buckling support, the data acquisition unit and the photovoltaic curtain wall are respectively connected to the control unit;

[0007] The electrorheological damping buckling-restrained brace includes an electrorheological damper structure and a buckling-restrained brace structure. The electrorheological damper structure includes a sleeve, a piston, and a piston rod. The sleeve is filled with electrorheological fluid. The piston is slidably installed in the sleeve. The piston rod is connected to the piston. The piston is provided with a throttle hole. The buckling-restrained brace structure includes an outer tube and an inner core. Sleeves are respectively arranged at both ends of the inner core. The outer tube is sleeved on the inner core and the sleeves.

[0008] The data acquisition unit is used to acquire the vibration data of the building. The control unit is used to apply a voltage to the electrorheological fluid to generate an electric field according to the vibration data. The photovoltaic curtain wall is used to provide energy support for the control unit. When the building is subjected to a vibration load, the support plate and the support column vibrate, driving the piston of the electrorheological damper structure to move. The electrorheological fluid flows through the throttle hole in the sleeve. The control unit adjusts the electric field strength by changing the voltage to control the damping effect and achieve vibration control.

[0009] Further, the electrorheological damper structure further includes end plates and connection plugs. The piston includes a first piston and a second piston. The piston rod is sequentially connected to the first piston, the second piston, and the end plate. The end plate is clamped at the first port of the sleeve. The connection plug is arranged on the end plate and exposed outside the sleeve.

[0010] Further, four electrorheological damping buckling-restrained braces connected in an "X" shape are installed between two support columns and a support plate in the steel frame. One end of the electrorheological damping buckling-restrained brace is connected to the support plate or the support column through a connection plug, and the other end is connected to a force distribution plate through a connection plug.

[0011] Further, the four electrorheological damping buckling-restrained braces are symmetrically arranged left and right. The two electrorheological damping buckling-restrained braces located above are connected to the upper support plate through connection plugs, and the two electrorheological damping buckling-restrained braces located below are connected to the support columns on both sides through connection plugs.

[0012] Further, the electrorheological damper structure further includes current wires. The current wires are arranged in the sleeve. The current wires pass through the second piston and the end plate and are connected to the control unit.

[0013] Further, the buckling-restrained brace structure further includes connecting plates. Both ends of the inner core are respectively connected to the connecting plates. The connecting plates are close to the second port of the sleeve. The second port of the sleeve is closed.

[0014] Further, the outer tube is an outer circular steel tube, and the inner core is a cross-shaped steel core.

[0015] Further, the data acquisition unit includes vibration sensors, acceleration sensors, and displacement sensors. The vibration sensors, acceleration sensors, and displacement sensors are uniformly arranged at the key position nodes of the building.

[0016] Furthermore, the electrorheological fluid is a fluid with adjustable viscosity, and the viscosity of the electrorheological fluid is adjusted by generating an electric field through the pressure voltage of the control unit.

[0017] Furthermore, the photovoltaic curtain wall is also equipped with a backup power supply, which is used to provide backup energy for the control unit in case of emergencies.

[0018] Compared with the prior art, the present invention adopts an assembled steel structure frame, with a high degree of component standardization, high on-site construction efficiency, convenient installation, and conforms to the trend of modern building industrialization. The assembled design improves the construction efficiency and scope of application, and can be adapted to high-rise buildings, bridges, large-span structures and other scenarios with higher vibration control requirements.

[0019] The present invention combines the plastic energy dissipation of the buckling-restrained brace structure and the active regulation advantage of the electrorheological damper structure. Through the synergistic effect of passive energy dissipation and active control, it can not only absorb displacement-related energy, but also adjust speed-related energy dissipation in real time, adapt to various vibration conditions, and significantly improve the vibration control efficiency and structural stability.

[0020] The present invention uses a photovoltaic curtain wall to achieve efficient utilization of renewable energy. The excess electricity generated can be stored, and a backup power supply is equipped to ensure the operation stability of the entire device. The electric energy required for the entire intelligent assembled hybrid multi-energy dissipation active vibration control brace device can be completely provided by the photovoltaic curtain wall, saving electricity costs and achieving energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the intelligent assembled hybrid multi-energy dissipation active vibration control brace device.

[0022] Figure 2 It is a schematic diagram of the connection between the steel frame and the electrorheological damper buckling-restrained brace.

[0023] Figure 3 It is a three-dimensional combined schematic diagram of the electrorheological damper buckling-restrained brace.

[0024] Figure 4 It is a cross-sectional schematic diagram of the electrorheological damper buckling-restrained brace.

[0025] Figure 5 It is a three-dimensional exploded schematic diagram of the electrorheological damper buckling-restrained brace.

[0026] Figure 6 It is a schematic diagram of the working principle of active vibration control.

[0027] Description of the reference numerals in the drawings:

[0028] 1 - Steel frame; 11 - Support plate; 12 - Support column; 2 - Electrorheological damping buckling - resistant brace; 211 - Sleeve; 212 - First piston; 213 - Second piston; 214 - Piston rod; 215 - Electrorheological fluid; 216 - Throttle hole; 217 - End plate; 218 - Connection plug; 219 - Current - carrying wire; 221 - Outer tube; 222 - Inner core; 223 - Connection plate; 3 - Control unit; 4 - Photovoltaic curtain wall; 5 - Force - dividing disc. Detailed implementation mode

[0029] The following further explains the intelligent prefabricated hybrid multi - energy - dissipating active vibration control support device of the present invention in conjunction with the attached drawings and specific embodiments.

[0030] Please refer to Figure 1 The present invention discloses an intelligent prefabricated hybrid multi - energy - dissipating active vibration control support device, including a steel frame 1, an electrorheological damping buckling - resistant brace 2, a data acquisition unit, a control unit 3, and a photovoltaic curtain wall 4. The steel frame 1 includes a support plate 11 and a support column 12, and the support plate 11 and the support column 12 form the building main structure through modular assembly. The electrorheological damping buckling - resistant brace 2 is installed on the steel frame 1, the data acquisition unit is arranged at key position nodes of the building, the photovoltaic curtain wall 4 surrounds the outside of the steel frame 1, and the electrorheological damping buckling - resistant brace 2, the data acquisition unit, and the photovoltaic curtain wall 4 are respectively connected to the control unit 3.

[0031] Please refer to Figure 2 Four electrorheological damping buckling - resistant braces 2 connected in an "X" shape are installed between two support columns 12 and a support plate 11 inside the steel frame 1. The electrorheological damping buckling - resistant brace 2 includes an electrorheological damper structure and a buckling - resistant brace structure. The electrorheological damper structure absorbs low - frequency and medium - frequency vibration energy through viscoelastic adjustment, and the buckling - resistant brace structure dissipates high - intensity vibration energy through plastic deformation, achieving a multi - energy - dissipating effect.

[0032] Please refer to Figure 3 and Figure 4 The electrorheological damper structure includes a sleeve 211, a first piston 212, a second piston 213, and a piston rod 214. The sleeve 211 is filled with electrorheological fluid 215. The first piston 212 and the second piston 213 are slidably installed in the sleeve 211, and throttle holes 216 are provided on the first piston 212 and the second piston 213 to regulate the flow path of the electrorheological fluid 215 through the throttle holes 216 provided on the pistons. The number and size of the throttle holes 216 can be designed according to the actual building vibration characteristics to optimize the flow path and damping performance of the electrorheological fluid 215, so as to adapt to external forces of various earthquake intensities and frequencies.

[0033] Please refer to Figure 4 and Figure 5, the electrorheological damper structure further includes end plates 217, connection plugs 218 and current conducting wires 219. The piston rod 214 is sequentially connected to the first piston 212, the second piston 213 and the end plate 217. The end plate 217 is clamped to the first port of the sleeve 211. The connection plug 218 is arranged on the end plate 217 and exposed outside the sleeve 211. The current conducting wire 219 is arranged inside the sleeve 211. The current conducting wire 219 passes through the second piston 213 and the end plate 217 and is connected to the control unit 3. The electrorheological fluid 215 is a fluid with adjustable viscosity. The viscosity of the electrorheological fluid 215 is adjusted by applying a voltage by the control unit 3 to generate an electric field. The electrorheological fluid 215 changes its viscosity under the action of the electric field, thereby dynamically adjusting the damping force and achieving an efficient dissipation effect on the vibration energy.

[0034] Please refer to Figure 3 and Figure 5 , the buckling-restrained brace structure includes an outer tube 221, an inner core 222 and a connecting plate 223. Both ends of the inner core 222 are respectively connected to the connecting plate 223. The sleeves 211 are respectively arranged at both ends of the inner core 222. The outer tube 221 is sleeved on the inner core 222 and the sleeves 211. The connecting plate 223 is close to the second port of the sleeve 211, and the second port of the sleeve 211 is closed. The outer tube 221 is an outer circular steel tube, and the inner core 222 is a cross-shaped steel core. The outer tube 221 is used to provide buckling restraint to prevent the internal steel core from buckling and losing stability, and the inner core 222 is used to bear tensile and compressive loads and absorb vibration energy through plastic deformation.

[0035] Four electrorheological damper buckling-restrained braces 2 connected in an "X" shape are installed between the two support columns 12 and the support plate 11 in the steel frame 1. One end of the electrorheological damper buckling-restrained brace 2 is connected to the support plate 11 or the support column 12 through the connection plug 218, and the other end of the electrorheological damper buckling-restrained brace 2 is connected to the force distribution plate 5 through the connection plug 218. At the positions where the support plate 11 and the support column 12 are connected to the connection plug 218, hinge plates and bolts are respectively arranged, and the connection plug 218 is connected to the support plate 11 or the support column 12 through the hinge plate and the bolt. Similarly, the connection plug 218 is also connected to the force distribution plate 5 through the hinge plate and the bolt.

[0036] Between the two support columns 12 and the support plate 11 in the steel frame 1, four electrorheological damper buckling-restrained braces 2 connected in an "X" shape are symmetrically arranged left and right. The two electrorheological damper buckling-restrained braces 2 located above are connected to the upper support plate 11 through the connection plug 218, and the two electrorheological damper buckling-restrained braces 2 located below are connected to the support columns 12 on both sides through the connection plug 218.

[0037] The electrorheological damping buckling-restrained brace 2 is used to enhance the seismic performance of the steel frame 1. Based on multiple energy dissipation mechanisms, vibration control is achieved through the synergistic effect of the electrorheological damper structure and the buckling-restrained brace structure. The electrorheological damper structure utilizes the rheological properties of the electrorheological fluid 215 to actively dissipate vibration energy related to velocity by adjusting the damping force. The buckling-restrained brace structure absorbs vibration energy related to displacement through plastic deformation. The combination of the two realizes the separate dissipation of velocity energy and displacement energy, thus significantly improving the seismic performance and dynamic stability.

[0038] The data acquisition unit includes vibration sensors, acceleration sensors, and displacement sensors, which are evenly distributed at the key position nodes of the building. For example, the vibration sensors and acceleration sensors are installed at the top and bottom of the building and at the ends of the support plates 11 and the tops of the support columns 12 on each floor, and the displacement sensors are installed at the joints of the support plates 11 and the support columns 12. The data acquisition unit is used to collect the real-time vibration data of the building and send the building vibration data to the control unit 3.

[0039] The control unit 3 is used to apply a voltage to the electrorheological fluid 215 to generate an electric field according to the vibration data of the building, and to dynamically change the viscosity of the electrorheological fluid 215 by adjusting the intensity of the electric field, thereby adjusting the damping performance. The control unit 3 applies a voltage to the electrorheological fluid 215 in the sleeve 211 through the current wire 219 to generate an electric field in the electrorheological fluid 215. The control unit 3 can also adopt an adaptive control algorithm to predict the future vibration trend according to the vibration intensity and adjust the damping performance in advance.

[0040] The control unit 3 controls the intensity of the electric field by adjusting the voltage difference and adjusts the viscosity of the electrorheological fluid 215. When the vibration amplitude is small, the electric field applied by the control unit 3 is weak, the viscosity of the electrorheological fluid 215 is low, and the electrorheological damping buckling-restrained brace 2 is allowed to provide a small damping force to reduce the rigid response of the building. When the vibration amplitude increases, the control unit 3 increases the electric field intensity, increases the viscosity of the electrorheological fluid 215, and increases the damping force to effectively limit the deformation of the building and absorb more vibration energy.

[0041] When the building is subjected to a vibration load, the main structure vibrates, and the support plates 11 and the support columns 12 of the steel frame 1 vibrate. The electrorheological damping buckling-restrained brace 2 connected to the support plate 11 or the support column 12 through the connecting plug 218 also vibrates accordingly. The end plate 217 of the electrorheological damper structure drives the first piston 212 and the second piston 213 to move. The electrorheological fluid 215 flows through the throttle hole 216 in the sleeve 211. The data acquisition unit collects the vibration data and sends it to the control unit 3, and the control unit 3 controls the damping effect of the electrorheological damping buckling-restrained brace 2 by changing the voltage to adjust the electric field intensity, thereby achieving vibration control.

[0042] The present invention adopts a multiple energy dissipation mechanism, where multiple energy dissipations work together to gradually disperse the vibration energy. In the structure of the electrorheological damper, the viscoelasticity of the electrorheological fluid 215 is adjusted to dissipate the vibration energy during small and medium earthquakes. The inner core 222 of the buckling-restrained brace structure enters plastic deformation during high-intensity earthquakes to absorb the energy generated by large vibrations. The support plate 11 and the support column 12 of the steel frame 1 absorb the remaining energy through joint energy dissipation and elastic deformation.

[0043] The photovoltaic curtain wall 4 is used to provide energy support for the control unit 3. As an important component, the photovoltaic curtain wall 4 integrates the functions of photovoltaic power generation and structural support, uses solar energy resources to provide electrical energy support for the control unit 3, reduces the dependence on external power supplies, and improves independence and sustainability. The photovoltaic curtain wall 4 is also equipped with a backup power supply, which is used to provide backup energy for the control unit 3 in case of emergencies. During an earthquake, the photovoltaic curtain wall 4 ensures that the control unit 3 can operate continuously to support the real-time adjustment of the viscosity of the electrorheological fluid 215.

[0044] Please refer to Figure 6 , in the specific implementation process, during an earthquake, the earthquake vibration signals are collected in real time by the data acquisition unit and the vibration data is transmitted to the control unit 3. The control unit 3 will judge whether the building meets the control standard according to the earthquake vibration signals obtained in real time. When the control unit 3 determines that the vibration signal does not meet the control standard, dynamic adjustment will be carried out. The rheology of the electrorheological fluid 215 is adjusted through the electrorheological damper structure to actively consume the vibration energy, thereby achieving effective vibration control.

[0045] In addition, the performance of the support device is further optimized through the vibration data of the main structure collected in real time. After more vibration data of the main structure is collected, the control unit 3 uses a model to judge these data and further adjusts the performance of the support device to ensure the stability and safety of the building under external vibrations such as earthquakes. If the vibration signal meets the control standard after adjustment, the adjustment will be terminated. Through the intelligent control method, the present invention can respond to vibration signals in real time, achieve precise vibration control, and thus improve the seismic resistance and structural safety of the building.

[0046] In summary, the present invention adopts an assembled steel structure frame, with a high degree of component standardization, high on-site construction efficiency, convenient installation, and conforms to the trend of modern building industrialization. The assembled design improves the construction efficiency and application scope, and can be adapted to high-rise buildings, bridges, large-span structures and other scenarios with high requirements for vibration control.

[0047] The present invention combines the plastic energy dissipation of the buckling-restrained brace structure and the active adjustment advantages of the electrorheological damper structure. Through the synergistic action of passive energy dissipation and active control, it can not only absorb displacement-related energy, but also adjust speed-related energy dissipation in real time, adapt to various vibration conditions, and significantly improve the vibration control efficiency and structural stability.

[0048] The present invention uses a photovoltaic curtain wall to achieve the efficient utilization of renewable energy. The excess electricity generated can be stored, and a backup power supply is equipped to ensure the operation stability of the entire device. The electrical energy required for the entire intelligent prefabricated hybrid multiple energy-consuming active vibration control support device can be completely provided by the photovoltaic curtain wall, saving electricity costs and achieving energy conservation and environmental protection.

[0049] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications made under the technical spirit disclosed by the present invention shall fall within the scope of the patent covered by the present invention.

Claims

1. An intelligent prefabricated hybrid multi-energy dissipation active vibration control bracing device, characterized in that, It includes a steel frame, an electrorheological (ER) damper buckling-restrained brace, a data acquisition unit, a control unit, and a photovoltaic curtain wall. The steel frame includes a support plate and support columns. The support plate and support columns form the main building structure through modular assembly. The ER damper buckling-restrained brace is installed on the steel frame. The data acquisition unit is arranged at key position nodes of the building. The photovoltaic curtain wall surrounds the outside of the steel frame. The ER damper buckling-restrained brace, the data acquisition unit, and the photovoltaic curtain wall are respectively connected to the control unit; The ER damper buckling-restrained brace includes an ER damper structure and a buckling-restrained brace structure. The ER damper structure includes a sleeve, a first piston, a second piston, and a piston rod. The sleeve is filled with ER fluid. The first piston and the second piston are slidably installed in the sleeve. Throttle holes are provided on the first piston and the second piston; The ER damper structure further includes end plates, connection plugs, and current leads. The piston rod successively connects the first piston, the second piston, and the end plate. The end plate is clamped at the first port of the sleeve. The connection plug is arranged on the end plate and exposed outside the sleeve. The current lead is arranged in the sleeve. The current lead passes through the second piston and the end plate and is connected to the control unit. The ER fluid is a fluid with adjustable viscosity. The viscosity of the ER fluid is adjusted by generating an electric field through the voltage applied by the control unit; The buckling-restrained brace structure includes an outer tube, an inner core, and connection plates. Both ends of the inner core are respectively connected to the connection plates. The sleeves are respectively arranged at both ends of the inner core. The outer tube sleeves the inner core and the sleeves. The connection plate is close to the second port of the sleeve. The second port of the sleeve is closed. The outer tube is an outer circular steel tube, and the inner core is a cross-shaped steel core. The data acquisition unit is used to collect the vibration data of the building. The control unit is used to apply a voltage to the ER fluid to generate an electric field according to the vibration data. The photovoltaic curtain wall is used to provide energy support for the control unit. When the building is subjected to a vibration load, the support plate and the support columns vibrate, driving the pistons of the ER damper structure to move. The ER fluid flows through the throttle holes in the sleeve. The control unit adjusts the electric field strength by changing the voltage to control the damping effect and achieve vibration control.

2. The intelligent prefabricated hybrid multiple energy dissipation active vibration control bracing device according to claim 1, wherein Four ER damper buckling-restrained braces connected in an "X" shape are installed between two support columns and the support plate inside the steel frame. One end of the ER damper buckling-restrained brace is connected to the support plate or the support column through a connection plug, and the other end is connected to a force distribution plate through a connection plug.

3. The intelligent prefabricated hybrid multi-energy dissipation active vibration control bracing device according to claim 2, wherein, The four ER damper buckling-restrained braces are symmetrically arranged left and right. The two ER damper buckling-restrained braces located above are connected to the upper support plate through connection plugs, and the two ER damper buckling-restrained braces located below are connected to the support columns on both sides through connection plugs.

4. The intelligent prefabricated hybrid multi-energy dissipation active vibration control bracing device according to claim 1, characterized in that, The data acquisition unit includes vibration sensors, acceleration sensors, and displacement sensors. The vibration sensors, acceleration sensors, and displacement sensors are evenly arranged at key position nodes of the building.

5. The intelligent prefabricated hybrid multi-energy-consuming active vibration control bracing device according to claim 1, characterized in that, The photovoltaic curtain wall is also equipped with a backup power supply, which is used to provide backup energy for the control unit in case of emergencies.

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