A Tuned Fluid Mass-Damper Nonlinear System Based on Orthogonal Transformation Enhancement

Abstract

The present invention relates to a tuned liquid mass-damping nonlinear system based on orthogonal conversion for efficiency enhancement. The system includes a tuned liquid efficiency-enhancing liquid damper box, a main structure, and an orthogonal motion conversion mechanism. The lower part and the interior of the tuned liquid efficiency-enhancing liquid damper box are respectively provided with an orthogonal motion conversion mechanism. The orthogonal motion conversion mechanism at the lower part of the tuned liquid efficiency-enhancing liquid damper box is respectively connected to the tuned liquid efficiency-enhancing liquid damper box and the main structure. The orthogonal motion conversion mechanism inside the tuned liquid efficiency-enhancing liquid damper box is connected to the orthogonal motion conversion mechanism at the lower part of the tuned liquid efficiency-enhancing liquid damper box. The orthogonal motion conversion mechanism inside the tuned liquid efficiency-enhancing liquid damper box is connected to the box body of the tuned liquid efficiency-enhancing liquid damper box and is connected to the grille plate. The orthogonal motion conversion mechanism includes rigid rods connected to each other, and the connecting ends of the rigid rods are hinged. Compared with the prior art, the present invention enhances the liquid mass and damping effect, which is beneficial to achieving efficient vibration control of the structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil engineering and relates to a tuned liquid mass-damping nonlinear system based on orthogonal conversion and efficiency enhancement. Background Art

[0002] In the aspect of using the inertial mass of liquid to control the vibration reduction of structures, the current main technologies (products) are tuned liquid efficiency enhancement liquid dampers (TLD) and their combined control systems. In these technologies (products), most utilize the sloshing of liquid to generate inertial mass. However, this sloshing is generated by the convective components in the liquid, and the pulsed components in the liquid still cannot provide additional liquid inertial mass during the sloshing process. Therefore, the existing technologies (products) have low utilization rates of liquid sloshing inertia and sloshing damping. On the premise of the same mass, the inertial mass generated by liquid sloshing needs to be further improved in utilization.

[0003] In addition, the current utilization of liquid mainly focuses on generating inertial mass, and the utilization of the efficiency enhancement liquid damping effect generated by liquid friction, shear, and collision is not sufficient, resulting in a low utilization rate of the potential of liquid vibration reduction control.

[0004] Patent CN112900637A discloses a low-frequency and high-load three-dimensional vibration isolation and shock isolation support. In appearance, it adopts a vibration isolation and shock isolation structure form with a vertical downward horizontal or upper horizontal and vertical downward direction, including: an upper structure, a lower structure, and a horizontal vibration reduction damping element. The upper structure includes an internal vertical damping element, a limit element, and an elastic element. The lower structure includes an upper frame structure and a lower frame structure. The horizontal vibration reduction damping element is arranged between the upper frame structure and the lower frame structure, thereby forming a barrier vibration isolation or shock isolation effect and a layered energy dissipation structure between the upper frame structure and the lower frame structure. However, the essence of this patent is a vibration isolation / vibration support with a certain energy dissipation capacity. When it plays a role, it can be abstracted as a spring element and a damping element from the perspective of mechanical principles, and has the function of adjusting the structural period and dissipating seismic energy. However, there is no mass element in this patent, so it is impossible to generate an inertial force for structural vibration control and produce a dynamic vibration absorption effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a tuned liquid mass-damping nonlinear system based on orthogonal conversion and efficiency enhancement to overcome at least one defect of the above-mentioned existing technologies. The present invention enhances the liquid mass and damping effect, which is beneficial to realizing efficient structural vibration control.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] One of the technical solutions of the present invention is to provide a tuned liquid mass-damping nonlinear system based on orthogonal conversion enhancement. The system includes a tuned liquid enhancement liquid damper box, a main structure, and an orthogonal motion conversion mechanism. The lower part and the interior of the tuned liquid enhancement liquid damper box are respectively provided with an orthogonal motion conversion mechanism. The orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box is respectively connected to the tuned liquid enhancement liquid damper box and the main structure. The orthogonal motion conversion mechanism inside the tuned liquid enhancement liquid damper box is connected to the orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box. The orthogonal motion conversion mechanism inside the tuned liquid enhancement liquid damper box is connected to the box body of the tuned liquid enhancement liquid damper box and is connected to the grille plate. The orthogonal motion conversion mechanism includes rigid rods connected to each other, and the connecting ends of the rigid rods are hinged.

[0008] Further, the orthogonal motion conversion mechanism includes four rigid rods in a rhombus structure, and elastic members are arranged between the hinge points of the rigid rods.

[0009] Further, an elastic member is arranged between the upper and lower ends of the orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box. The elastic member includes a spring, a flexible metal rod, an elastic rubber pad, or a shape memory alloy. During operation, the horizontal motion of the hinge points at the left and right ends of the orthogonal motion conversion mechanism will be converted into the vertical motion of the hinge points at the upper and lower ends, realizing orthogonal motion conversion.

[0010] As a preferred technical solution, the connection ends of the elastic member and the orthogonal motion conversion mechanism are fixedly connected to the upper and lower hinge points.

[0011] Further, the left and right ends of the orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box are respectively connected to the tuned liquid enhancement liquid damper box and the main structure through connecting members.

[0012] As a preferred technical solution, the connection ends of the connecting member and the orthogonal motion conversion mechanism are hinged to the left and right hinge points, and the connection ends with the tuned liquid enhancement liquid damper box and the main structure are fixedly connected.

[0013] Further, the lower end of the orthogonal motion conversion mechanism inside the tuned liquid enhancement liquid damper box is connected to the upper end of the orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box through a connecting shaft. The connecting shaft penetrates the box body of the tuned liquid enhancement liquid damper box. During operation, the vertical motion of the upper hinge point of the orthogonal motion conversion mechanism at the lower part of the tuned liquid enhancement liquid damper box will be transmitted to the vertical motion of the lower hinge point of the orthogonal motion conversion mechanism inside the tuned liquid enhancement liquid damper box.

[0014] As a preferred technical solution, the connection ends of the connecting shaft and the orthogonal motion conversion mechanism at the upper and lower hinge points are hinged.

[0015] Further, the upper end of the orthogonal motion conversion mechanism inside the tuned hydrodynamic enhanced liquid damping tank is connected to the tank body of the tuned hydrodynamic enhanced liquid damping tank through a fixed shaft to keep the vertical position of the upper end unchanged. The left and right ends are respectively connected to the grid plate. The grid plate includes a round hole translation plate or a square hole translation plate. During operation, the vertical movement of the lower hinge point of the orthogonal motion conversion mechanism will be converted into the horizontal movement of the hinge points at the left and right ends, realizing the orthogonal motion conversion.

[0016] As a preferred technical solution, the connection end of the fixed shaft and the upper hinge point of the orthogonal motion conversion mechanism is hinged, and the connection end with the grid plate is fixedly connected.

[0017] Further, the tuned hydrodynamic enhanced liquid damping tank is connected to the main structure through a seismic isolation bearing.

[0018] Further, the tuned hydrodynamic enhanced liquid damping tank is connected to the support through a seismic isolation bearing, and then connected to the main structure. The support is connected to the main structure. The support is not an essential component and can be used when the height of the seismic isolation bearing is insufficient.

[0019] As a preferred technical solution, the support is fixedly connected to the main structure.

[0020] Further, the seismic isolation bearing is selected from one or more of natural rubber bearings, lead core rubber bearings, friction pendulum bearings, and flat sliding bearings.

[0021] Further, the tuned hydrodynamic enhanced liquid damping tank stores a liquid, which can be selected according to actual needs and includes water or silicone oil.

[0022] As a preferred technical solution, the cross-sectional shape of the tuned hydrodynamic enhanced liquid damping tank includes a circle or a rectangle.

[0023] As a preferred technical solution, the ratio of the inertial mass and the enhanced liquid damping effect generated by the grid plate to the pulse component of the liquid inside the tuned hydrodynamic enhanced liquid damping tank can be adjusted by adjusting the size of the grid plate and the size of the grids on the grid plate.

[0024] As a preferred technical solution, the amplification effect of the orthogonal motion conversion mechanism on the displacement during orthogonal motion conversion can be adjusted by adjusting the initial angle of the rigid rod.

[0025] One of the technical solutions of the present invention is to provide a method for using a tuned hydrodynamic mass-damping nonlinear system based on orthogonal conversion enhancement. The method includes the following steps:

[0026] During operation, a relative horizontal displacement occurs between the tuned hydrodynamic enhanced liquid damping tank and the main structure. The orthogonal motion conversion mechanism at the lower part of the tuned hydrodynamic enhanced liquid damping tank converts and amplifies this relative horizontal displacement into a vertical displacement, causing the elastic member connected between the upper and lower ends of the orthogonal motion conversion mechanism to generate a non-linear tuning stiffness. Then, the amplified vertical displacement is transmitted through a connecting shaft to the orthogonal motion conversion mechanism inside the tuned hydrodynamic enhanced liquid damping tank; and the vertical displacement is amplified a second time into a horizontal displacement of the grid plate; the grid plate will push the pulsed component of the liquid inside the tuned hydrodynamic enhanced liquid damping tank to generate an amplified inertial mass that could not originally participate in the liquid tuned sloshing motion, and utilize the shearing effect when the liquid passes through the grids on the grid plate to generate an enhanced liquid non-linear damping.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) Through the double orthogonal motion conversion mechanism and the additional elastic member inside it, the present invention can transfer the horizontal motion of the tuned hydrodynamic enhanced liquid damping tank relative to the structure to the pulsed component of the liquid that was originally stationary relative to the tank body in the tuned hydrodynamic enhanced liquid damping tank; based on the motion amplification mechanism that can be exhibited during the orthogonal conversion of the mechanism during motion, it can enhance the liquid sloshing transfer efficiency and non-linear damping efficiency; and can provide a non-linear tuning stiffness related to the horizontal displacement of the tank body for the tuned hydrodynamic enhanced liquid damping tank;

[0029] (2) The present invention can actively drive the pulsed component to generate a horizontal sloshing motion through the horizontal motion of the grid plate, so as to further utilize the enhanced liquid mass generated by the pulsed component, significantly enhance and flexibly adjust the liquid mass amplification and tuning effect of the liquid pulsed component, and at the same time can also generate an enhanced liquid non-linear damping effect through the shearing effect of the grids on the grid plate on the liquid;

[0030] (3) The seismic isolation bearing of the present invention is used to support the tuned hydrodynamic enhanced liquid damping tank, and realizes the adjustment of the connection stiffness between the tuned hydrodynamic enhanced liquid damping tank and the structure, and establishes the first tuning mechanism of the overall liquid damping tank compared with the controlled main structure; based on the non-linear conversion of displacement during the operation of the orthogonal motion conversion mechanism, the elastic member in the orthogonal motion conversion mechanism installed at the lower part of the tuned hydrodynamic enhanced liquid damping tank is used to generate a non-linear stiffness, and the second tuning mechanism is established; the enhanced liquid mass in the tuned hydrodynamic enhanced liquid damping tank through the orthogonal motion conversion mechanism is used to establish the third tuning mechanism;

[0031] (4) The present invention generates a linear tuning effect through the isolation bearing and a non-linear tuning effect through the elastic member in the orthogonal motion conversion mechanism; combined with the inertial mass amplification generated by the tuned hydrodynamic enhanced liquid damper and the non-linear liquid damping enhanced by the orthogonal conversion mechanism, a tuned hydrodynamic mass-damping non-linear system based on orthogonal conversion enhancement is formed, which is beneficial to realizing efficient vibration control of the structure and providing new ideas for the performance design and vibration control of existing fire water tanks, ornamental water tanks and tuned liquid dampers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an isometric structural schematic diagram of the tuned hydrodynamic mass-damping non-linear system based on orthogonal conversion enhancement in the embodiment of the present invention;

[0033] Figure 2 It is a top view structural schematic diagram of the tuned hydrodynamic mass-damping non-linear system based on orthogonal conversion enhancement in the embodiment of the present invention;

[0034] Figure 3 It is a front view structural schematic diagram of the tuned hydrodynamic mass-damping non-linear system based on orthogonal conversion enhancement in the embodiment of the present invention.

[0035] Description of the reference numerals in the drawings:

[0036] 1 - support, 2 - isolation bearing, 3 - orthogonal motion conversion mechanism, 3-1 - rigid rod, 3-2 - hinge point, 4 - connecting member, 5 - tuned hydrodynamic enhanced liquid damper, 6 - fixed shaft, 7 - grille plate, 8 - connecting shaft, 9 - main structure, 10 - elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The present invention will be described in detail below with reference to specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are used to describe the same object, and only represent different instances referring to the same object, rather than implying that the object described in this way must be in a given order, whether in time, space, sorting or any other way.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Embodiment:

[0041] A tuned liquid mass-damping nonlinear system based on orthogonal conversion enhancement, as Figures 1 to 3 shown, includes a tuned liquid enhancement liquid damping box 5, a main structure 9, and an orthogonal motion conversion mechanism 3. The lower part and the interior of the tuned liquid enhancement liquid damping box 5 are respectively provided with an orthogonal motion conversion mechanism 3. The orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid enhancement liquid damping box 5 is respectively connected to the tuned liquid enhancement liquid damping box 5 and the main structure 9. The orthogonal motion conversion mechanism 3 inside the tuned liquid enhancement liquid damping box 5 is connected to the orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid enhancement liquid damping box 5. The orthogonal motion conversion mechanism 3 inside the tuned liquid enhancement liquid damping box 5 is connected to the box body of the tuned liquid enhancement liquid damping box 5 and is connected to the grid plate 7. The orthogonal motion conversion mechanism 3 includes rigid rods 3-1 connected to each other, and the connection ends of the rigid rods 3-1 are hinged;

[0042] The orthogonal motion conversion mechanism 3 includes four rigid rods 3-1 in a rhombus structure, and elastic members 10 are arranged between the hinge points 3-2 of the rigid rods 3-1;

[0043] Elastic members 10 are arranged between the upper and lower ends of the orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid enhancement liquid damping box 5. The elastic members 10 can be springs, flexible metal rods, elastic rubber pads, or shape memory alloys. In this embodiment, a spring is preferably used. During operation, the horizontal motion of the hinge points 3-2 at the left and right ends of the orthogonal motion conversion mechanism 3 will be converted into the vertical motion of the hinge points 3-2 at the upper and lower ends, realizing orthogonal motion conversion;

[0044] The connection ends of the spring and the orthogonal motion conversion mechanism 3 at the upper and lower ends of the hinge points 3-2 are fixedly connected;

[0045] The left and right ends of the orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid enhancement liquid damping box 5 are respectively connected to the tuned liquid enhancement liquid damping box 5 and the main structure 9 through connectors 4;

[0046] The connection ends of the connectors 4 and the orthogonal motion conversion mechanism 3 at the left and right ends of the hinge points 3-2 are hinged, and the connection ends with the tuned liquid enhancement liquid damping box 5 and the main structure 9 are fixedly connected;

[0047] The lower end of the orthogonal motion conversion mechanism 3 inside the tuned hydrodynamic liquid damping tank 5 is connected to the upper end of the orthogonal motion conversion mechanism 3 at the lower part of the tuned hydrodynamic liquid damping tank 5 through a connecting shaft 8. The connecting shaft 8 penetrates through the box body of the tuned hydrodynamic liquid damping tank 5. During operation, the vertical motion of the upper hinge point 3-2 of the orthogonal motion conversion mechanism 3 at the lower part of the tuned hydrodynamic liquid damping tank 5 will be transmitted to the vertical motion of the lower hinge point 3-2 of the orthogonal motion conversion mechanism 3 inside the tuned hydrodynamic liquid damping tank 5;

[0048] The upper and lower ends of the connecting end of the connecting shaft 8 and the orthogonal motion conversion mechanism 3 are hinged at the hinge point 3-2;

[0049] The upper end of the orthogonal motion conversion mechanism 3 inside the tuned hydrodynamic liquid damping tank 5 is connected to the box body of the tuned hydrodynamic liquid damping tank 5 through a fixed shaft 6 to keep the vertical position of the upper end unchanged. The left and right ends are respectively connected to the grid plate 7. The grid plate 7 can be a circular hole translation plate or a square hole translation plate. In this embodiment, it is preferably a circular hole translation plate. During operation, the vertical motion of the lower hinge point 3-2 of the orthogonal motion conversion mechanism 3 will be converted into the horizontal motion of the hinge points 3-2 at the left and right ends, realizing orthogonal motion conversion;

[0050] The connection end of the fixed shaft 6 and the orthogonal motion conversion mechanism 3 is hinged at the upper hinge point 3-2 and fixedly connected to the connection end of the circular hole translation plate;

[0051] The tuned hydrodynamic liquid damping tank 5 is connected to the main structure 9 through a seismic isolation bearing 2;

[0052] The tuned hydrodynamic liquid damping tank 5 is connected to the support 1 through a seismic isolation bearing 2, and then connected to the main structure 9. The support 1 is connected to the main structure 9. The support 1 is not a necessary component. The support 1 can be used when the height of the seismic isolation bearing 2 is insufficient;

[0053] The support 1 is fixedly connected to the main structure 9;

[0054] The seismic isolation bearing 2 can be a natural rubber bearing, a lead core rubber bearing, a friction pendulum bearing, a flat sliding bearing or a combination thereof. In this embodiment, it is preferably a friction pendulum bearing;

[0055] The cross-sectional shape of the tuned hydrodynamic liquid damping tank 5 can be circular or rectangular. In this embodiment, it is preferably rectangular;

[0056] The tuned hydrodynamic liquid damping tank 5 stores liquid, and the liquid can be selected according to actual needs, such as water or silicone oil. In this embodiment, it is preferably water;

[0057] The ratio of the inertial mass and the enhanced liquid damping effect generated by the pulse component of the liquid inside the tuned liquid dynamic enhanced liquid damper 5 pushed by the circular hole translation plate can be adjusted by adjusting the size of the circular hole translation plate and the size of the circular holes on the circular hole translation plate; keeping the aperture, number, and position of the circular holes unchanged, increasing the size of the circular hole translation plate can improve the damping effect; keeping the circular hole translation plate unchanged, reducing the aperture and number can improve the damping effect;

[0058] The amplification effect of the orthogonal motion conversion mechanism 3 on the displacement during orthogonal motion conversion can be adjusted by adjusting the initial angle of the rigid rod 3-1; the initial included angle of the rigid rod 3-1 in the orthogonal motion conversion mechanism 3 in the converted direction should be less than the initial included angle of the conversion target direction, and the greater the difference, the better the amplification effect; taking the orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid dynamic enhanced liquid damper 5 as an example, its purpose is to convert the horizontal displacement (the converted direction) into a vertical displacement (the conversion target direction), so the initial included angle at both ends of the left and right of its rhombus should be less than the included angle at both ends of the upper and lower of the rhombus, and the greater the difference, the better the amplification effect; taking the orthogonal motion conversion mechanism 3 inside the tuned liquid dynamic enhanced liquid damper 5 as an example, its purpose is to convert the vertical displacement (the converted direction) into a horizontal displacement (the conversion target direction), so the initial included angle at both ends of the upper and lower of its rhombus should be less than the included angle at both ends of the left and right of the rhombus, and the greater the difference, the better the amplification effect; if it is greater, there will be no amplification effect.

[0059] In this embodiment, except as clearly stated, the materials of the above components are all made of steel, and the above connections are all welded.

[0060] The usage method of the above tuned liquid dynamic mass-damping nonlinear system based on orthogonal conversion enhancement is as follows:

[0061] During operation, the tuned liquid dynamic enhanced liquid damper 5 has a relative horizontal displacement with the main structure 9. The orthogonal motion conversion mechanism 3 at the lower part of the tuned liquid dynamic enhanced liquid damper 5 converts and amplifies this relative horizontal displacement into a vertical displacement, causing the spring connected between the hinge points 3-2 at the upper and lower ends of the orthogonal motion conversion mechanism 3 to generate a nonlinear tuning stiffness; then, the amplified vertical displacement is transmitted to the orthogonal motion conversion mechanism 3 inside the tuned liquid dynamic enhanced liquid damper 5 through the connecting shaft 8; and the vertical displacement is amplified twice into the horizontal displacement of the circular hole translation plate; the circular hole translation plate will push the pulse component of the liquid inside the tuned liquid dynamic enhanced liquid damper 5 to generate an amplified inertial mass that could not originally participate in the liquid tuning sloshing motion, and utilize the shear effect when the liquid passes through the circular holes on the circular hole translation plate to generate an enhanced liquid nonlinear damping.

[0062] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement, characterized in that The system includes a tuned hydrodynamic liquid damping tank (5), a main structure (9), and an orthogonal motion conversion mechanism (3). The lower part and the interior of the tuned hydrodynamic liquid damping tank (5) are respectively provided with the orthogonal motion conversion mechanism (3). The orthogonal motion conversion mechanism (3) at the lower part of the tuned hydrodynamic liquid damping tank (5) is respectively connected to the tuned hydrodynamic liquid damping tank (5) and the main structure (9). The orthogonal motion conversion mechanism (3) inside the tuned hydrodynamic liquid damping tank (5) is connected to the orthogonal motion conversion mechanism (3) at the lower part of the tuned hydrodynamic liquid damping tank (5). The orthogonal motion conversion mechanism (3) inside the tuned hydrodynamic liquid damping tank (5) is connected to the tank body of the tuned hydrodynamic liquid damping tank (5) and is connected to the grille plate (7). The orthogonal motion conversion mechanism (3) includes four rigid rods (3-1) connected to each other to form a rhombus structure, and the connecting ends of the rigid rods (3-1) are hinged; An elastic member (10) is provided between the upper and lower hinge points (3-2) of the orthogonal motion conversion mechanism (3) at the lower part of the tuned hydrodynamic liquid damping tank (5); The left and right ends of the orthogonal motion conversion mechanism (3) at the lower part of the tuned hydrodynamic liquid damping tank (5) are respectively connected to the tuned hydrodynamic liquid damping tank (5) and the main structure (9) through connecting members (4); The lower end of the orthogonal motion conversion mechanism (3) inside the tuned hydrodynamic liquid damping tank (5) is connected to the upper end of the orthogonal motion conversion mechanism (3) at the lower part of the tuned hydrodynamic liquid damping tank (5) through a connecting shaft (8), and the connecting shaft (8) penetrates the tank body of the tuned hydrodynamic liquid damping tank (5).

2. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement according to claim 1, characterized in that The elastic member (10) includes a spring, a flexible metal rod, an elastic rubber pad, or a shape memory alloy.

3. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement according to claim 1, characterized in that The upper end of the orthogonal motion conversion mechanism (3) inside the tuned hydrodynamic liquid damping tank (5) is connected to the tank body of the tuned hydrodynamic liquid damping tank (5) through a fixed shaft (6), and the left and right ends are respectively connected to the grille plate (7). The grille plate (7) includes a round-hole translation plate or a square-hole translation plate.

4. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement according to claim 1, characterized in that The tuned hydrodynamic liquid damping tank (5) is connected to the main structure (9) through a seismic isolation bearing (2).

5. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement as claimed in claim 4, characterized in that The tuned hydrodynamic liquid damping tank (5) is connected to the support (1) through a seismic isolation bearing (2), and then connected to the main structure (9). The support (1) is connected to the main structure (9).

6. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement according to claim 4, characterized in that The seismic isolation bearing (2) is selected from one or more of a natural rubber bearing, a lead-core rubber bearing, a friction pendulum bearing, and a flat sliding bearing.

7. A tuned liquid mass-damping nonlinear system based on orthogonal transformation enhancement according to claim 1, characterized in that, The tuned hydrodynamic liquid damping tank (5) stores a liquid, and the liquid includes water or silicone oil.

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