Self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device

Abstract

The invention relates to a self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device, and belongs to the technical field of vibration control. Comprising a roll shaft support, a spring rod, a main inerter element, a box chamber main body, a secondary inertia flywheel, a flow guide pipe, a transmission connecting rod and a flow baffle, the main inerter element penetrates through and is arranged in the box chamber main body, the outer end of the main inerter element is connected with the spring rod, the spring rod is connected with the roll shaft support, and the roll shaft support is respectively fixed with the bottom surface of a main beam and the top of a bridge pier; in addition, the flow guide pipe is arranged in the box chamber body, a flow baffle and a transmission connecting rod are further arranged in the flow guide pipe, and the transmission connecting rod is further connected with a secondary inertia flywheel. The damping device is achieved through a hydraulic mechanism, and the damping device with the self-adaptive inerter coefficient is formed through linkage of the inerter devices in the main box chamber and the auxiliary box chamber, so that the purposes of changing the inerter coefficient in real time and damping are achieved. The shock resistance, the transmission efficiency, the energy consumption effect, the structural rigidity and the stability of a vibration reduction system can be improved.

Description

Technical Field

[0001] The present invention relates to an inertia tuning device, in particular to an inertia tuning device for bridge vibration control capable of adaptively controlling output and energy consumption, belonging to the technical field of vibration control. Background Art

[0002] Vibration control is a significant technical challenge in civil engineering, particularly in buildings and bridge structures. Vibration not only impacts the proper operation and stability of structures but can also cause noise pollution and shorten their lifespan. Therefore, effectively isolating and reducing vibration is crucial to improving system performance and reliability.

[0003] Currently, conventional vibration control devices, such as viscous dampers, friction dampers, and metal dampers, primarily dissipate energy through deformation or by converting heat into energy. These devices have numerous limitations when dealing with complex shocks and vibrations. For example, they cannot provide sufficient damping force to effectively control vibrations under high loads or with large variations in shock intensity. Furthermore, conventional shock absorbers have limited energy absorption and dispersion capabilities under severe vibration and impact, resulting in a sluggish response and inability to quickly stabilize.

[0004] In 2001, Japanese and British researchers proposed a two-terminal dynamic element, marking the first introduction of the concept of "inertia capacity." By possessing two movable endpoints, the inertia capacity overcomes the drawback of mass elements, which typically have only one movable endpoint, and thus overcomes the limitations of traditional vibration isolation methods. The forces acting on its two ends are proportional to the relative acceleration between them, and this proportionality coefficient, expressed in units identical to mass, is called the apparent mass (inertia capacity coefficient). The inertia capacity element itself only functions to regulate inertia and transfer energy. To achieve more effective vibration reduction, it is often necessary to connect the inertia capacity with mechanical components such as damping and stiffness to form an inertia capacity system.

[0005] Typical inertia chambers include ball screw, rack and pinion, and hydraulic types. A variety of hydraulic inertia chambers have been developed, including those with a built-in piston rod, a double-barrel hydraulic inertia chamber, and a variable-stroke hydraulic fluid inertia chamber. Most of these hydraulic inertia chambers offer only limited innovations in their operating methods, failing to achieve a variable inertia coefficient or adaptive inertia coefficient under varying vibration conditions. Furthermore, their designs lack multi-stage energy dissipation, relying instead on a single energy dissipation model. Summary of the Invention

[0006] In response to the above-mentioned defects of the above-mentioned prior art, the present invention proposes a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption, which is used to solve the defects of the existing hydraulic fluid inertia device in the prior art, such as the fixed inertia coefficient and damping coefficient, the single energy consumption mode, and the inability to dynamically adapt to the changes in the inherent parameters of the engineering structure or the changes in the surrounding environment. It realizes the multi-level energy consumption of the damper, enables the damper to be adaptively adjusted, and effectively ensures the vibration reduction effect of the damper.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A bridge vibration-controlled inertia tuning device with adaptive output and energy consumption, comprising a roller support, a spring rod, a primary inertia element, a chamber body, a secondary inertia flywheel, a guide tube, a transmission connecting rod, and a baffle; The main inertia capacity element passes through and is placed in the box body. The outer end of the main inertia capacity element is connected to the spring rod, and the spring rod is connected to the roller support. The roller support is respectively fixed to the bottom surface of the main beam and the top of the pier. In addition, the guide tube is placed in the box body. The baffle and transmission connecting rod are also provided in the guide tube. The secondary inertia flywheel is also connected to the transmission connecting rod.

[0008] Furthermore, the box chamber body is composed of a main box chamber, a sub-box chamber and a side protective cover; the main box chamber and the sub-box chamber are connected by a guide tube, and the guide tube is installed on the punching position of the guide tube; the main box chamber is filled with damping fluid; the inner walls of the two sub-box chambers arranged above and below the box chamber body are provided with vertical fixing positions for the transmission rod, which are vertically installed on the upper and lower top plates; the inner walls of the two side protective covers of the box chamber body are provided with horizontal fixing positions for the transmission rod and the guide tube fixing positions, which are horizontally installed on the left and right side panels.

[0009] Furthermore, the guide pipe is composed of a curved section, a straight section and a leak-proof gasket, wherein the curved section is located in the side protective cover, and the straight section is located in the auxiliary box chamber; the curved section is provided with a transverse transmission rod punching position and a baffle fixing rod punching position; the straight section is a variable cross-section, the aperture changes from large to small and is the thinnest in the middle, is symmetrically processed, and is provided with a vertical transmission rod punching position in the middle.

[0010] Furthermore, the transmission connecting rod is mainly composed of a vertical transmission rod, a transverse transmission rod, a transmission rod flywheel, a transmission rod vertical fixing position, and a transmission rod transverse fixing position. The transmission connecting rod is installed in the middle position of the straight part of the guide tube. The vertical transmission rod passes through the vertical transmission rod punching position in the middle of the guide tube, contacts the upper and lower top plates of the auxiliary box chamber, and is fixed on the transmission rod vertical fixing position; the transverse transmission rod passes through the transverse transmission rod punching position of the guide tube, contacts the left and right side plates of the side protective cover, and is fixed on the transmission rod vertical and transverse fixing positions. Two transmission rod flywheels are installed symmetrically on the left and right, and are set on the transverse transmission rod.

[0011] Furthermore, a longitudinal transmission gear and a transverse transmission gear are installed at the junction of the vertical transmission rod and the transverse transmission rod; when the main inertia element in the main chamber is activated due to the vibration conduction effect, it causes the damping fluid to flow. After the damping fluid flows into the guide tube, it reaches a set force, causing the baffle to start rotating, and then drives the transmission rod flywheel to rotate, and then causes the transverse transmission rod to move. At the same time, the transmission action of the longitudinal transmission gear and the transverse transmission gear converts the liquid flow into transmission rod rotation, drives the vertical transmission rod to rotate, and then drives the secondary inertia flywheel on the vertical transmission rod to move, consuming energy.

[0012] Furthermore, the baffle is composed of a cylindrical rotating piece, a baffle fixing rod, and a baffle fixing position; the baffle is installed in the middle position of the curved section of the guide pipe, the baffle fixing rod passes through the baffle fixing rod punching position of the curved section of the guide pipe, contacts the left and right side plates of the side protective cover, and is fixed on the baffle fixing position, and the cylindrical rotating piece is fixedly connected to the baffle fixing rod and rotates in the same direction.

[0013] Furthermore, the spring rod includes a connecting pull ring, a spring pressure rod and a spring sleeve connected in sequence; spring sleeve covers are provided on both sides of the spring sleeve to prevent damage to internal components, a spring is provided in the spring sleeve, and an energy-absorbing material shock-absorbing gasket is provided on the contact surface of the spring and the spring pressure rod to absorb energy; the outer end of the connecting pull ring is connected to the roller shaft support.

[0014] Furthermore, the main inertia capacity element is composed of a piston rod gasket, a piston rod and a main inertia capacity baffle; the piston rod passes through the piston rod punching position on the front of the main chamber; the two ends of the piston rod are connected to the spring sleeve of the spring rod, and there are piston rod gaskets at both ends of the piston rod as buffers; the main inertia capacity baffle is placed in the middle position of the piston rod, and can squeeze the damping fluid in the main chamber back and forth with the reciprocating motion.

[0015] Furthermore, the roller support is composed of a roller fixing base and a pin; the two roller fixing bases at both ends are respectively connected to the bottom of the main beam and the top of the pier.

[0016] Furthermore, the transmission rod flywheel is composed of a transmission rod flywheel blade, a transmission rod flywheel inner ring, and a transmission rod flywheel bearing; the secondary inertia flywheel is composed of a secondary inertia flywheel blade, a secondary inertia flywheel inner ring, and a secondary inertia flywheel bearing; the secondary inertia flywheel is installed on the vertical transmission rod of the transmission connecting rod and consumes energy together with the rotation of the transmission rod; the baffle fixing position is composed of a ratchet sleeve, a non-return device, a pawl, and a pawl rotating shaft, wherein the pawl is fixed to the baffle fixing rod through the pawl rotating shaft, the non-return device presses against the pawl and is fixed to the baffle fixing rod, the pawl engages with the tooth groove on the inner wall of the ratchet sleeve, and the pawl, ratchet sleeve and non-return device ensure the unidirectional rotation of the baffle, so that the damping fluid flows in one direction, and the movement direction of the transmission rod flywheel is consistent.

[0017] After adopting the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art: The present invention proposes a bridge vibration and inertia tuning device with adaptive output and energy consumption, which can transmit greater acceleration and load. The energy-absorbing material shock-absorbing gasket and the sub-inertia flywheel added to the spring rod improve the energy consumption capacity of the inertia vibration reduction system, and the resulting multi-stage inertia behavior can provide multi-stage adaptive inertia coefficients and multi-stage dynamic negative stiffness characteristics, thereby enhancing the energy absorption and energy consumption effects. The above design can not only adapt to slight vibrations and small displacements, but also provide stronger vibration reduction effects under larger impacts and load changes, thereby significantly improving the performance and adaptability of the nonlinear stiffness vibration damper of the present invention. Therefore, whether in a micro-vibration environment or in a high-intensity impact environment, the nonlinear stiffness vibration damper of the present invention can maintain efficient vibration reduction performance, thereby meeting the needs of different application scenarios.

[0018] 1. This invention achieves multi-stage inertial behavior through the coordinated operation of the transmission gear, primary inertial element, secondary inertial flywheel, and the guide tube inertial-damping system. Energy-absorbing material and shock-absorbing washers in series-connected spring sleeves enable multi-stage structural tuning. Combining the inertial element with the spring element and shock-absorbing material further enhances the deformation amplification effect of the damping device and achieves multi-stage efficiency in energy dissipation. 2. In this invention, the liquid flowing through the flow tube effectively absorbs and disperses vibration energy, thereby reducing the impact of vibration on the entire system. This design results in a vibration damper with higher damping efficiency and better stability. It also has a more compact structure, is lighter, and is easier to install and maintain. 3. This invention utilizes a baffle to control the rotation of the flywheel in the auxiliary chamber, achieving the desired vibration isolation effect under varying vibration conditions. In the case of mild vibration, the spring and energy-absorbing material damping washers primarily provide the damping and energy dissipation effect. In the case of more severe vibration, the spring and energy-absorbing material damping washers, the primary inertia element in the main chamber, and the secondary flywheel in the auxiliary chamber provide the damping and energy dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall front view of a bridge vibration and inertia tuning device capable of adaptively controlling output and energy consumption according to the present invention, installed on a bridge structure; Figure 2 This is an overall three-dimensional view of a bridge vibration and inertia tuning device capable of adaptively controlling output and energy consumption according to the present invention; Figure 3 This is a partial three-dimensional view of the roller support of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 4 This is a partial three-dimensional view of the spring rod of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 5 This is a three-dimensional view of the main inertia capacitance component of a bridge vibration-controlled inertia capacitance tuning device with adaptive output and energy consumption according to the present invention; Figure 6 This is a partial three-dimensional view of the main body of the box of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 7 This is a frontal three-dimensional view of a secondary inertia flywheel of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 8 This is a partial three-dimensional view of the guide pipe of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 9 This is a partial three-dimensional view of the transmission connecting rod of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 10 This is a partial three-dimensional view of the transmission connecting rod flywheel of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 11 This is a partial three-dimensional view of the baffle of a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 12 This is a partial three-dimensional view of a one-way rotating ratchet wheel of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 13 This is a partial three-dimensional view of the energy-absorbing material shock-absorbing gasket of the bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 14 This is a finite element mesh division diagram of a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 15This is a stress-strain relationship diagram of the energy-absorbing material of a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 16 This is a loading system diagram of a cyclic reciprocating loading of a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 17 It is a hysteresis curve diagram and skeleton curve diagram of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 18 This is a multi-stage energy consumption relationship diagram of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention; Figure 19 This is a graph of seismic waves inputted after the bridge structure is installed with the bridge vibration and inertia capacity tuning device with adaptive output and energy consumption according to the present invention; Figure 20 This is a comparison diagram of the shear force time history curve at the pier bottom when the bridge vibration-controlled inertia tuning device with adaptive output and energy consumption of the present invention is installed and the time history curve when the bridge is not installed; Figure 21 This is the vibration reduction principle of the bridge vibration and inertia tuning device with adaptive output and energy consumption of the present invention; Figure 22 This is a flow chart for comparing the effects of a bridge vibration and inertia tuning device with adaptive output and energy consumption according to the present invention. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-22 The present invention will be further described in detail with specific implementations to facilitate a clear understanding of the present invention, but they do not constitute a limitation to the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Example The most widely used high-speed railway bridge is the 32m span simply supported box girder. According to statistics, the 32m span simply supported girder of the Beijing-Shanghai High-Speed Railway accounts for more than 90% of its total bridge mileage. Therefore, the embodiment of this specification takes the 32m railway simply supported box girder as an example, and the total weight of the superstructure is 600t.

[0024] As attached Figure 1-2 As shown in FIG. 1 , a bridge vibration-controlled inertia tuning device with adaptive output and energy consumption in this embodiment includes a roller support 51, a spring rod 52, a primary inertia element 53, a chamber body 54, a secondary inertia flywheel 55, a guide tube 56, a transmission connecting rod 57, and a baffle 58. Figure 2 As shown, a primary inertia element 53 passes through and is housed within a housing body 54. The outer end of the primary inertia element 53 is connected to a spring rod 52, which is in turn connected to a roller support 51. The roller support 51 is secured to the bottom surface of the main beam 1 and the top of the pier 4, respectively. Furthermore, a flow guide 56 is housed within the housing body 54. A baffle 58 and a transmission connecting rod 57 are also provided within the flow guide 56. A secondary inertia flywheel 55 is also connected to the transmission connecting rod 57.

[0025] like Figure 6 As shown, the chamber body 54 is composed of a main chamber 541, a sub-chamber 542, and a side protective cover 543. The main chamber 541 and the sub-chamber 542 are connected by a guide tube 56, which is installed on the guide tube punching position 545. The main chamber 541 is filled with damping fluid. The inner walls of the two sub-chambers 542 arranged at the upper and lower ends of the chamber body 54 are provided with a transmission rod vertical fixing position 576, which is vertically installed on the upper and lower top plates. The inner walls of the two side protective covers 543 of the chamber body 54 are provided with a transmission rod horizontal fixing position 577 and a guide tube fixing position 583, which are horizontally installed on the left and right side plates.

[0026] like Figure 8 As shown, the flow guide 56 consists of a curved section 561, a straight section 562, and a leak-proof gasket 566. The curved section 561 is located within the side protective cover 543, while the straight section 562 is located within the auxiliary tank chamber 542. The curved section 561 is provided with holes 564 for the transverse transmission rod and holes 565 for the baffle fixing rod. The straight section 562 has a variable cross-section, with the diameter gradually decreasing to a minimum in the middle. It is symmetrically machined and has a hole 563 for the vertical transmission rod in the middle.

[0027] like Figure 9As shown, the transmission connecting rod 57 is mainly composed of a vertical transmission rod 571, a transverse transmission rod 572, a transmission rod flywheel 575, a transmission rod vertical fixing position 576, and a transmission rod transverse fixing position 577. The transmission connecting rod 57 is installed in the middle position of the straight part 562 of the guide tube. The vertical transmission rod 571 passes through the vertical transmission rod punching position 563 in the middle of the guide tube 56, contacts the upper and lower top plates of the auxiliary box chamber 542, and is fixed on the transmission rod vertical fixing position 576. The transverse transmission rod 572 passes through the transverse transmission rod punching position 564 of the guide tube 56, contacts the left and right side plates of the side protection cover 543, and is fixed on the transmission rod vertical and transverse fixing positions 577. Two transmission rod flywheels 575 are installed symmetrically on the left and right sides and are set on the transverse transmission rod 572. In this embodiment, as shown in FIG. Figure 10 As shown, the transmission rod flywheel 575 is composed of a transmission rod flywheel blade 5751, a transmission rod flywheel inner ring 5752, and a transmission rod flywheel bearing 5753.

[0028] In this embodiment, a longitudinal transmission gear 573 and a transverse transmission gear 574 are installed at the junction of the vertical transmission rod 571 and the transverse transmission rod 572. When the main inertia element 53 in the main chamber 541 moves due to the vibration transmission effect, it causes the damping fluid to flow. After the damping fluid flows into the guide tube 56, it reaches a set force, causing the baffle 58 to start rotating, which in turn drives the transmission rod flywheel 575 to rotate, and then causes the transverse transmission rod 572 to move. At the same time, the transmission action of the longitudinal transmission gear 573 and the transverse transmission gear 574 converts the liquid flow into transmission rod rotation, driving the vertical transmission rod 571 to rotate, and then driving the secondary inertia flywheel 55 on the vertical transmission rod 571 to move, consuming energy. Figure 7 As shown, the secondary flywheel 55 is composed of a secondary flywheel blade 551, a secondary flywheel inner ring 552, and a secondary flywheel bearing 553. The secondary flywheel 55 is mounted on a vertical transmission rod 571 of a transmission connecting rod 57, and consumes energy as the transmission rod rotates.

[0029] like Figure 11 As shown, the baffle 58 consists of a cylindrical rotating piece 581, a baffle fixing rod 582, and a baffle fixing position 583. The baffle 58 is installed in the middle of the curved section 561 of the guide tube. The baffle fixing rod 582 passes through the baffle fixing rod perforation 565 of the curved section 561 of the guide tube, contacts the left and right side panels of the side protective cover 543, and is fixed to the baffle fixing position 583. The cylindrical rotating piece 581 and the baffle fixing rod 582 are fixedly connected and rotate in the same direction.

[0030] like Figure 12As shown, the baffle fixing position 583 is composed of a ratchet sleeve 5831, a non-return device 5832, a pawl 5833, and a pawl rotating shaft 5834, wherein the pawl 5833 is fixed to the baffle fixing rod 582 through the pawl rotating shaft 5834, the non-return device 5832 presses against the pawl 5833 and is fixed to the baffle fixing rod 582, and the pawl 5833 is engaged with the inner wall groove of the ratchet sleeve 5831. The pawl 5833, the ratchet sleeve 5831 and the non-return device 5832 ensure the unidirectional rotation of the baffle 58, so that the damping fluid flows in one direction, and the movement direction of the transmission rod flywheel 575 is consistent.

[0031] like Figure 4 As shown, the spring rod 52 includes a connecting ring 521, a spring pressure rod 522, and a spring sleeve 525, which are connected in sequence. Spring sleeve 525 is provided with spring sleeve covers 523 on both sides to prevent damage to internal components. A spring 526 is installed within the spring sleeve 525. The contact surface between the spring 526 and the spring pressure rod 522 is provided with an energy-absorbing material shock-absorbing pad 524 to absorb energy. The outer end of the connecting ring 521 is connected to the roller support 51.

[0032] like Figure 5 As shown, the main inertia element 53 consists of a piston rod gasket 531, a piston rod 532, and a main inertia baffle 533. The piston rod 532 passes through the piston rod hole 544 on the front of the main chamber 541. Both ends of the piston rod 532 are connected to the spring sleeve 525 of the spring rod 52, and piston rod gaskets 531 are placed at both ends of the piston rod 532 to serve as buffers. The main inertia baffle 533 is placed in the middle of the piston rod 532 to squeeze the damping fluid in the main chamber 541 as it reciprocates.

[0033] like Figure 3 As shown, the roller support 51 is composed of a roller fixing base 511 and a pin 512. The two roller fixing bases 511 at both ends are connected to the bottom of the main beam 1 and the top of the pier 4 respectively.

[0034] The principle diagram of this embodiment is shown in Figure 21 After installing a bridge vibration-controlled inertia tuning device (hereinafter referred to as the damper) with adaptive output and energy consumption, when the bridge structure vibrates, the vertical load is primarily borne by the supports, while the lateral load is borne by the friction of the supports and the damper. In this embodiment, after installing the bridge vibration-controlled inertia tuning device with adaptive output and energy consumption, different vibration conditions correspond to different energy consumption modes.

[0035] The basic form of the motion equation after installing the damper is as follows: (1) Where: m : Equivalent mass of the bridge.

[0036] c : Structural damping coefficient.

[0037] k : Structural stiffness.

[0038] x : Bridge displacement.

[0039] F hyd : Force generated by the hydraulic inertia vessel.

[0040] F fly : Flywheel consumption capacity.

[0041] F ( t ): External motivation.

[0042] The mechanical model of the hydraulic inertia vessel is given by formulas (2) and (3): The hydraulic inertia container is mainly composed of a chamber body 54, a flow guide pipe 56 and a main inertia container element 53. Figure 2 As shown. When the fluid passes through the inertial channel, inertial force is generated: (2) b = ρLA (3) Where: ρ : Fluid density.

[0043] L : Inertial channel length.

[0044] A : Channel cross-sectional area.

[0045] b : Hydraulic inertia coefficient (equivalent inertial mass).

[0046] The inertial flywheel energy consumption model has formulas (4)-(6): The flywheel is coupled to the bridge motion through a rack and pinion mechanism, and its angular displacement θ satisfy θ = rx ( r: transmission ratio). The flywheel dynamic equation is: (4) J : Flywheel moment of inertia.

[0047] c θ : Flywheel rotation damping coefficient.

[0048] τ : Flywheel output torque.

[0049] The formula for converting torque into linear force is (6): (5) In the formula R is the gear radius, J eq= Jr 2 / R 2 , c eq = c θ r 2 / R 2 ,but: (6) Will F hyd and F fly Substituting into the total motion equation, the coupled motion equation is as follows (7): (7) The bridge vibration and inertia tuning device with adaptive output and energy consumption has the advantages of inertia coefficient b and J eq Together they increase the system inertia and reduce the resonant frequency. In addition, there is structural damping c With flywheel damping c eq Collaborative energy dissipation.

[0050] When slight vibration occurs, the pier and beam undergo relative displacement, and the damper begins to operate. The energy dissipation in the first stage of operation is primarily due to the work performed by the energy-absorbing shock-absorbing pad 524. Because the vibration is slight, the damper operates in a slow creeping motion, and the work performed by the primary inertia element 53 and the secondary inertia flywheel 55 is not considered. When a larger vibration occurs, the primary inertia element 53 in the primary chamber 541 activates due to vibration transmission, causing the damping fluid to flow. The fluid then flows into the guide tube 56, connecting the primary chamber 541 and the secondary chamber 542. Once the fluid flows into the guide tube 56, a baffle 58 positioned in the middle of the curved section 561 of the guide tube is dislodged. When a predetermined force is reached, the baffle 58 is dislodged, and the fluid then drives the cylindrical rotating piece 582 to rotate, which in turn drives the transmission rod flywheel 575, causing the transmission connecting rod 57 positioned in the middle of the straight section 562 of the guide tube to begin operating. A transmission gear is installed at the junction of the vertical transmission rod 571 and the horizontal transmission rod 572 to convert the liquid flow into the rotation of the transmission connecting rod 57, and then drive the secondary inertia flywheel 55 installed on the vertical transmission rod 571 to move and consume energy.

[0051] The energy absorbing material shock absorbing pad 524 in this embodiment is made of microporous foam composite material. Figure 13 Its constitutive relations are shown in the attached Figure 15 , which is a cylindrical component with a diameter of 50mm and a thickness of 30mm.

[0052] The size of the main chamber 541 is a cuboid with a length of 500mm, a width of 1000mm and a height of 300mm. The cross-sectional dimensions of the flow guide pipe 56 are a diameter of 20mm and a length of 1000mm. The damping liquid in the main chamber 541 is liquid silicone oil, and its mechanical properties include density. ρ =1.0g / cm3, damping coefficient (viscosity coefficient) c =10Pa·s.

[0053] The secondary inertia flywheel 55 is in the shape of a hollowed-out cylinder with an outer diameter of 100 mm and an inner diameter of 10 mm. Its volume is 155.51 cm 3 , thickness is 20mm, material is Q345, density ρ =7.85g / cm 3 .

[0054] The finite element simulation is used to simulate the adaptive output and energy consumption of the bridge vibration and inertia tuning device. Figure 14 As shown, it is loaded cyclically, where the loading system is as follows Figure 16 As shown, the hysteresis curve and skeleton curve of the damper are obtained as Figure 17 As shown. Then the cumulative energy consumption curve is obtained by calculation as shown Figure 18 shown.

[0055] In order to obtain the damping effect of the bridge vibration and inertia tuning device with adaptive output and energy consumption, the finite element simulation software is used to simulate the bridge earthquake situation without dampers and after installing dampers, considering the friction effect. The input seismic wave is as follows: Figure 19 As shown, the time history curve of the shear force at the pier bottom and the damping rate are obtained as follows Figure 20 As shown in the figure, it can be seen that the shear force reduction rate of the pier bottom after installing the damper reaches 66.3%. The calculation process is shown in Figure 22 .

[0056] It should be noted that eight guide tubes and eight secondary inertia flywheels are provided in the schematic diagrams and embodiments of this application. These numbers are selected for the convenience of presentation in this application, but in specific implementations, they are not limited to eight related devices.

[0057] The above is merely a preferred embodiment of the present invention and does not constitute any formal limitation on the structure of the present invention. The layout and number of the present invention are not limited to this example and can be optimized according to actual engineering practices. Any modifications, equivalent changes, and decorations to the above embodiment based on the technical principles of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bridge vibration and inertia tuning device with adaptive output and energy consumption, characterized by: The inertia tuning device includes a roller support (51), a spring rod (52), a main inertia element (53), a chamber body (54), a secondary inertia flywheel (55), a flow guide tube (56), a transmission connecting rod (57), and a baffle (58); The main inertia element (53) passes through and is placed in the box body (54), the main inertia element (53) is connected to the spring rod (52) at its outer end, the spring rod (52) is connected to the roller support (51), and the roller support (51) is respectively fixed to the bottom surface of the main beam (1) and the top of the pier (4); in addition, the guide pipe (56) is placed in the box body (54), and the baffle (58) and the transmission connecting rod (57) are also provided in the guide pipe (56), and the secondary inertia flywheel (55) is also connected to the transmission connecting rod (57).

2. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 1, characterized in that: The box body (54) is composed of a main box chamber (541), a subsidiary box chamber (542) and a side protection cover (543); the main box chamber (541) and the subsidiary box chamber (542) are connected by a guide tube (56), and the guide tube (56) is installed on the guide tube punching position (545); the main box chamber (541) is filled with damping fluid; the inner walls of the two subsidiary box chambers (542) arranged at the upper and lower ends of the box body (54) are provided with a transmission rod vertical fixing position (576), which is vertically installed on the upper and lower top plates; the inner walls of the two side protection covers (543) of the box body (54) are provided with a transmission rod horizontal fixing position (577) and a guide tube fixing position (583), which are horizontally installed on the left and right side plates.

3. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 2, characterized in that: The guide pipe (56) is composed of a guide pipe curved section (561), a guide pipe straight section (562) and a leak-proof gasket (566), wherein the guide pipe curved section (561) is located in the side protection cover (543), and the guide pipe straight section (561) is located in the auxiliary box chamber (542); the guide pipe curved section (561) is provided with a transverse transmission rod punching position (564) and a baffle fixing rod punching position (565); the guide pipe straight section (562) is a variable cross-section, the aperture changes from large to small to the thinnest in the middle, is symmetrically processed, and a vertical transmission rod punching position (563) is provided in the middle.

4. The bridge vibration-controlled inertia tuning device with adaptive output and energy consumption according to claim 3 is characterized by: The transmission connecting rod (57) mainly consists of a vertical transmission rod (571), a transverse transmission rod (572), a transmission rod flywheel (575), a transmission rod vertical fixing position (576), and a transmission rod transverse fixing position (577). The transmission connecting rod (57) is installed at the middle position of the straight portion (562) of the guide tube. The vertical transmission rod (571) passes through the vertical transmission rod punching position (563) in the middle of the guide tube (56), contacts the upper and lower top plates of the auxiliary box chamber (542), and is fixed on the transmission rod vertical fixing position (576); the transverse transmission rod (572) passes through the transverse transmission rod punching position (564) of the guide tube (56), contacts the left and right side plates of the side protection cover (543), and is fixed on the transmission rod vertical and transverse fixing positions (577). Two transmission rod flywheels (575) are installed symmetrically on the left and right sides and are set on the transverse transmission rod (572).

5. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 4 is characterized by: A longitudinal transmission gear (573) and a transverse transmission gear (574) are installed at the junction of the vertical transmission rod (571) and the transverse transmission rod (572); when the main inertia element (53) in the main chamber (541) moves due to the vibration transmission effect, it causes the damping fluid to flow. After the damping fluid flows into the guide tube (56), it reaches a set force, causing the baffle (58) to start rotating, and then drives the transmission rod flywheel (575) to rotate, and then causes the transverse transmission rod (572) to move. At the same time, the transmission action of the longitudinal transmission gear (573) and the transverse transmission gear (574) converts the liquid flow into the rotation of the transmission rod, drives the vertical transmission rod (571) to rotate, and then drives the secondary inertia flywheel (55) on the vertical transmission rod (571) to move, consuming energy.

6. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 5, characterized in that: The baffle (58) is composed of a cylindrical rotating piece (581), a baffle fixing rod (582), and a baffle fixing position (583); the baffle (58) is installed in the middle position of the guide tube curved section (561); the baffle fixing rod (582) passes through the baffle fixing rod punching position (565) of the guide tube curved section (561), contacts the left and right side plates of the side protection cover (543), and is fixed on the baffle fixing position (583); the cylindrical rotating piece (581) is fixedly connected to the baffle fixing rod (582) and rotates in the same direction.

7. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 1 is characterized by: The spring rod (52) includes a connecting pull ring (521), a spring pressure rod (522) and a spring sleeve (525) connected in sequence; spring sleeve covers (523) are provided on both sides of the spring sleeve (525) to prevent damage to internal components; a spring (526) is provided in the spring sleeve (525); and a shock-absorbing gasket (524) made of energy-absorbing material is provided on the contact surface between the spring (526) and the spring pressure rod (522) to absorb energy; the outer end of the connecting pull ring (521) is connected to the roller support (51).

8. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 7 is characterized by: The main inertia capacity element (53) is composed of a piston rod gasket (531), a piston rod (532) and a main inertia capacity baffle (533); the piston rod (532) passes through the piston rod punching position (544) on the front of the main chamber (541); the two ends of the piston rod (532) are connected to the spring sleeve (525) of the spring rod (52), and the two ends of the piston rod (532) have piston rod gaskets (531) as buffers; the main inertia capacity baffle (533) is placed in the middle position of the piston rod (532) and can squeeze the damping fluid in the main chamber (541) back and forth with the reciprocating motion.

9. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 1 is characterized by: The roller support (51) is composed of a roller fixing base (511) and a pin (512); the two roller fixing bases (511) at both ends are respectively connected to the bottom of the main beam (1) and the top of the pier (4).

10. The bridge vibration and inertia tuning device with adaptive output and energy consumption according to claim 6, characterized in that: The transmission rod flywheel (575) is composed of a transmission rod flywheel blade (5751), a transmission rod flywheel inner ring (5752), and a transmission rod flywheel bearing (5753); the secondary inertia flywheel (55) is composed of a secondary inertia flywheel blade (551), a secondary inertia flywheel inner ring (552), and a secondary inertia flywheel bearing (553); the secondary inertia flywheel (55) is mounted on the vertical transmission rod (571) of the transmission connecting rod (57) and consumes energy along with the rotation of the transmission rod; the baffle fixing position (583) is composed of a ratchet sleeve (5831), a non-return device (5832), a pawl (5 833), a ratchet rotating shaft (5834), wherein the ratchet (5833) is fixed to the baffle fixing rod (582) through the ratchet rotating shaft (5834), the non-return device (5832) abuts against the ratchet (5833) and is fixed to the baffle fixing rod (582), the ratchet (5833) is engaged with the tooth groove of the inner wall of the ratchet sleeve (5831), and the ratchet (5833), the ratchet sleeve (5831) and the non-return device (5832) ensure the unidirectional rotation of the baffle (58), so that the damping fluid flows in one direction, and the movement direction of the transmission rod flywheel (575) is consistent.

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