A two-dimensional structure automatic control vibration testing device

Abstract

The present application relates to the technical field of bridge engineering test, and specifically relates to a two-dimensional structure automatic control vibration test device, which comprises a transverse track, two groups of along-wind tracks and model units, the transverse track is arranged above the along-wind tracks, one group of the along-wind tracks is fixed to the ground, and the other group is fixed to the top outer keel, the model unit comprises two groups of model systems and two groups of model bodies, each group of the model system comprises a displacement rod, a hanging point system, a spring system and a detection unit, the detection unit is arranged between the hanger and the two groups of along-wind tracks; an electric exciter is instantaneously started to drive the model system to drive the model body to vibrate, the detection unit collects vibration data, through integration of a double-model parallel test platform on a set of device, quick switching and synchronous comparison test of various boundary conditions such as sliding and fixing are realized, and the limitations of single function and inflexible boundary simulation of traditional devices are overcome.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge engineering testing, and particularly relates to a two-dimensional structure automatic control vibration testing device. BACKGROUND

[0002] With the development of large-span bridges, high-rise buildings and flexible space structures, the research on their wind resistance, earthquake resistance and other dynamic performance is crucial. Accurate acquisition of dynamic response parameters of the structure under complex excitations such as wind load and earthquake action, especially the translational and torsional coupling vibration characteristics, is the basis for safety evaluation and optimization design. The traditional vibration testing method usually uses fixed boundary or single degree of freedom excitation, which is difficult to truly simulate the elastic support, sliding constraint and other variable boundary conditions existing in actual engineering, and cannot conveniently study the influence of different sag, stiffness and damping parameters on the dynamic characteristics of the structure.

[0003] To overcome the above limitations, some test devices that can adjust the boundary or use electric exciters for multi-point excitation have appeared in the prior art. However, these devices are still relatively single in function, and a set of equipment can usually only simulate one main boundary state (such as pure fixing or pure sliding). When comparative tests of different boundary conditions are carried out, the entire test device needs to be replaced or adjusted, resulting in a complicated experimental process, a long cycle, and possible introduction of system errors due to differences in device foundation, environment and other factors between different tests, affecting the consistency and comparability of the data. In addition, the existing devices are still not flexible enough in terms of synchronization, independence and accurate adjustment of multi-dimensional parameters, and it is difficult to efficiently complete multi-factor and multi-level parameterized research on one device.

[0004] Therefore, there is an urgent need for a two-dimensional structure automatic vibration testing device with high integration, flexible adjustment, and the ability to realize rapid switching and synchronous comparative testing of multiple boundary conditions. SUMMARY

[0005] To solve the above problems in the prior art, the present application provides a two-dimensional structure automatic control vibration testing device, which realizes rapid switching and synchronous comparative testing of sliding and fixed multiple boundary conditions on one device through an adjustable hanging point, a spring, a damping system and a double model parallel testing platform, overcoming the limitations of traditional devices in terms of single function and inflexible boundary simulation.

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

[0007] The application discloses a two-dimensional structure automatic control vibration testing device, which comprises a transverse track, two groups of along-wind tracks and a model unit, the transverse track is arranged above the along-wind tracks, one group of the along-wind tracks is fixed to the ground, and the other group of the along-wind tracks is fixed to a top outer keel, and the facing surfaces of the two groups of along-wind tracks are provided with sliding grooves; the model unit can be slidably connected or locked between the two groups of along-wind tracks, the model unit comprises two groups of model systems and two groups of model bodies, each group of the model systems comprises a displacement rod, a lifting point system, a spring system and a detection unit, the model body is arranged between the lifting rods of the spring system, the displacement rod can be slidably connected or locked in the sliding groove, and the lifting point system is connected with the displacement rod and the spring system at two ends; the detection unit is arranged between the lifting rod and the two groups of along-wind tracks; an electric exciter is arranged between the displacement rod and the along-wind track, the electric exciter is instantaneously started to drive the model system to drive the model body to generate vibration, and the detection unit collects vibration data.

[0008] Preferably, the along-wind tracks and the transverse tracks are all four, and two two groups are divided into upper and lower groups, and the two transverse tracks of one group are symmetrically arranged between the two along-wind tracks of one group.

[0009] Preferably, the displacement rod of each group of the model system is eight, and is divided into upper and lower groups; the two groups of displacement rods can be slidably connected or locked in the sliding grooves of the along-wind tracks.

[0010] Preferably, the lifting point system is four groups of adjustable spacing lifting point systems, each group of the lifting point system comprises a lifting rod, an adjusting ring and an adjusting rod, the adjusting ring is threadedly and adjustably connected with the lifting rod and the adjusting rod at two ends, and one end, away from the adjusting ring, of the lifting rod is connected with one of the displacement rods.

[0011] Preferably, the spring system further comprises four linear springs, one end of each of the four linear springs is connected with the adjusting rod of one of the four groups of lifting point systems, and the other end is connected with two symmetrically arranged lifting rods, and the two ends of the model body penetrate through the middle parts of the two lifting rods.

[0012] Preferably, the detection unit comprises an infrared detection system, a damper and a self-vibration torsion testing system, the infrared detection system is arranged between the along-wind tracks and the displacement rods, the damper is adjustably arranged between the along-wind tracks and the model body, and the self-vibration torsion testing system is arranged between the spring system and the model.

[0013] Preferably, the infrared detection system comprises an extension rod fixed to the displacement rod and a sensing plate arranged on the lifting rod, the top of the extension rod is provided with an infrared emitter, and the sensing plate is provided with a corresponding infrared receiving unit, so that the displacement of the displacement rod is detected in a non-contact mode.

[0014] Preferably, a gravity block is further included, which is fixed to the hanger by detachable binding devices, for adjusting the mass distribution, barycenter and suspension height of the model.

[0015] Preferably, a locking device is arranged on the displacement rod, by which the displacement rod can be fixed in the sliding groove of the downwind track, so as to switch the sliding test state and the fixed test state of the device.

[0016] Preferably, a two-dimensional structure automatic control vibration test method is further included, which is applied to the two-dimensional structure automatic control vibration test device, and includes the following steps:

[0017] S1: erecting the transverse track and the downwind track and installing multiple sets of displacement rods, hanger point systems, spring systems, dampers and self-vibration torsion test systems, to form a double-model test platform;

[0018] S2: determining whether a single model or a double model needs to be arranged on the double-model test platform, and determining a sliding or fixed test state based on the test requirement;

[0019] S3: based on the test state, adjusting multiple dimensions of parameters, then starting the electric exciter to apply a predetermined excitation signal, and combining the detection unit to collect self-vibration, torsion and displacement data of the two-dimensional structure under different working conditions in real time; wherein the multiple dimensions of parameter adjustment include adjusting the hanger point height, adjusting the linear spring pre-tensioning amount, adjusting the adaptation to different structure models, adjusting the damper angle and damping coefficient, adjusting the phase difference of the electric exciter and adjusting the initial displacement interval;

[0020] S4: after the test is completed, removing the single model or the double model, restoring the double-model test platform, and arranging the data to generate a modal parameter database under the corresponding working condition.

[0021] The beneficial effects of the present application are:

[0022] By adjusting the hanger point, the spring, the damper system and the double-model parallel test platform, the quick switching and synchronous comparison test of multiple boundary conditions under sliding and fixed conditions are realized on one set of device, the limitations of the single function and the inflexible boundary simulation of the traditional device are overcome, and the experimental efficiency and the data comparability are significantly improved. The multi-dimensional parameter accurate control capability can flexibly simulate different verticality, stiffness, damping and excitation phase, and accurately reveal the nonlinear dynamic response and torsion coupling characteristics of the structure under complex loads.

[0023] An electric vibrator applies a controllable excitation force or displacement in the windward direction to a structural model suspended or supported by a suspension point system. A damper and spring system are used to simulate the boundary conditions and dynamic characteristics of the actual structure. The damper dynamically changes the damping coefficient to adapt to the vibration control requirements under different working conditions and suppress resonance. An infrared detection unit collects the displacement of the displacement rod in real time. The self-vibration torsional testing system can independently or jointly excite and measure the torsional vibration response of the structure and is used to capture the torsional response characteristics of the model under complex stress conditions, solving the problem that it is difficult to accurately obtain the true response of the structure under multi-dimensional excitation in traditional vibration testing. Attached Figure Description

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a top view of the present invention;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a side view of the self-oscillation switching of the present invention;

[0028] Figure 4 This is a side view of the lifting point switching of the present invention;

[0029] Figure 5 This is a side view showing the height switching of the present invention;

[0030] Figure 6 This is a test diagram of the rotation angle of the present invention;

[0031] Figure 7 This is a spacing test diagram of the present invention;

[0032] Figure 8 This is a side view of the lifting point system of the present invention;

[0033] Legend: 1. Transverse track; 2. Windward track; 3. Displacement rod; 4. Lifting point system; 41. Hook; 42. Adjusting ring; 43. Adjusting rod; 5. Spring system; 51. Linear spring; 52. Lifting rod; 9. Model 1; 10. Model 2; 11. Extension rod; 12. Induction plate; 13. Damper; 14. Self-vibration torsional testing system; 15. Gravity block. Detailed Implementation

[0034] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided. Example 1:

[0035] refer toFigures 1-8 As shown, this embodiment provides a two-dimensional structure automated control vibration testing device. Through dual-track collaborative control and linkage adjustment with electric exciter, combined with spring system 5 stiffness adjustment and damper 13 dynamic response, it accurately simulates the dynamic behavior under different boundary conditions. Combined with infrared detection system and self-vibration torsion testing system 14, it collects displacement, torsion angle and frequency decay curves in real time, effectively obtains the resonant frequency, mode shape distribution and energy dissipation characteristics of the model under multi-dimensional excitation, significantly improving the testing accuracy and engineering applicability.

[0036] A two-dimensional structure automated vibration testing device includes a transverse track 1, a windward track 2, and model units. The transverse track 1 is positioned above the windward track 2. The model units are lockably mounted on the windward track 2, forming a movable or fixed model unit. The model units are divided into two groups, each consisting of a model body and a model system. The model body is divided into Model 1 (9) and Model 2 (10), and the model system is divided into Model 1 System and Model 2 System. There are four windward tracks 2 and four transverse tracks 1, arranged in pairs, one group fixed to the ground and the other fixed to the top external keel. Both groups of windward tracks 2 have grooves on their facing surfaces. The two transverse tracks 1 of one group are symmetrically positioned between the two windward tracks 2 of the other group. Both model systems include displacement rods 3, a suspension point system 4, a spring system 5, a damper 13, and a self-vibration torsional testing system 14. Each model system contains eight displacement rods 3, arranged in two groups, one above the other. Both groups of displacement rods 3 are slidably connected to the grooves of the windward track 2. The spring system 5 and the... Model 1 (9) or Model 2 (10) is located between two sets of downwind tracks 2. The suspension system 4 is connected at both ends to displacement rods 3 and spring systems 5, providing vertical suspension support for Model 1 (9) or Model 2 (10). Additionally, an existing electric vibrator is installed between the side of the displacement rod 3 and the downwind track 2 as a power source to generate instantaneous excitation force. During sliding, the electric vibrator slides with the displacement rod 3; during locking, the electric vibrator locks with the displacement rod. When the electric vibrator generates instantaneous excitation force, both the electric vibrator and the displacement rod 3 are fixed. The system is also equipped with a detection unit, which includes an infrared detection system, a damper 13, and a self-vibration torsion testing system 14. The damper 13 is adjustable and located between the downwind track 2 and the model. It is used to adjust the resistance and adapt to the vibration frequency to suppress resonance. One end of the infrared detection unit is located on the downwind track 2, and the other end is located on the displacement rod 3 to detect and collect the displacement of the displacement rod 3. The self-vibration torsion testing system 14 is an existing device and is located between the spring system 5 and the model to provide key parameters for wind and earthquake resistance research.

[0037] The above setup allows for real-time monitoring of the model's vibration displacement changes in the sliding state and its torsional natural frequency in the fixed state. A two-dimensional, wind-directed, controllable excitation force or displacement is applied to the structural model suspended or supported by the suspension point system 4 using an electric exciter. Dampers 13 and the spring system 5 simulate the boundary conditions and dynamic characteristics of the actual structure. Dampers 13 dynamically change their damping coefficient to adapt to vibration control requirements under different working conditions and suppress resonance. An infrared detection unit collects the displacement of the displacement rod 3 in real time. The natural torsional vibration testing system 14 can independently or jointly excite and measure the torsional vibration response of the structure, capturing the torsional response characteristics of the model under complex stress states. This solves the problem of accurately obtaining the true response of the structure under multi-dimensional excitation in traditional vibration testing. Simultaneously, the torsional angle and frequency decay curves are recorded. Multiple sets of data are combined to fit the dynamic model of the structure under different boundary conditions, further verifying its stability and reliability in complex environments such as wind loads and earthquakes, providing precise parameter support for engineering design.

[0038] Based on the above, the displacement rod 3 can be in a sliding state or a fixed state, and sliding tests and fixed tests can be performed respectively. The fixed test can be achieved by using existing locking devices, such as screw and nut locking. Each model system has four sets of adjustable-spaced lifting point systems 4, each set consisting of two (upper and lower). One end of each lifting point system 4 is connected to the adjacent displacement rod 3. Each lifting point system 4 includes a hook 41, an adjusting ring 42, and an adjusting rod 43. The adjusting ring 42 has threads at both ends, and the two ends of the adjusting ring 42 are threadedly and adjustablely connected to the lifting rod 52 and the adjusting rod 43, respectively. The end of the lifting rod 52 away from the adjusting ring 42 is threadedly connected to the displacement rod 3, and the end of the adjusting rod 43 away from the adjusting ring 42 is fixedly connected to the spring system 5. The spring system 5 includes a linear spring 51 and a lifting rod 52. The number of rods 52 and linear springs 51 corresponds to the number of adjusting rods 43 in the suspension system 4. One end of each of the four linear springs 51 is connected to one of the four adjusting rods 43 on the same axis, and the other end is connected to one end of each of the two suspension rods 52. There are two suspension rods 52 arranged symmetrically. The four linear springs 51 are connected to both ends of the two suspension rods 52 respectively. The two ends of Model 1 9 or Model 2 10 pass through the middle of the two suspension rods 52 respectively, forming a whole. The four sets of linear springs 51 are located at the four corners of Model 1 9 or Model 2 10. The deformation resistance of the upper linear spring 51 is greater than the tensile force of the lower linear spring 51 and the weight of Model 1 9 or Model 2 10, so that Model 1 9 or Model 2 10 is in a suspended state. The lower linear spring 51 maintains the tensile force to keep Model 1 9 or Model 2 10 stable.

[0039] The infrared detection system includes an extension rod 11 and a sensing plate 12. The sensing plate 12 is respectively located at both ends of the suspension rod 52. One end of the extension rod 11 is fixed to the displacement rod 3, and the other end is set opposite to the sensing plate 12, forming a non-contact displacement detection structure. An infrared transmitter is provided on the top of the extension rod 11, and a corresponding infrared receiving unit is provided on the sensing plate 12. When the extension rod 11 moves relative to the displacement rod 3, the strength of the infrared signal changes accordingly. The signal can be converted into accurate displacement data through calibration. The damper 13 is located between the suspension rod 52 and the top keel to dissipate structural vibration energy and effectively suppress high-frequency oscillations and resonance responses. The damper 13 adapts to the needs of different vibration modes through an adjustable damping coefficient. The self-vibration torsion test system 14 is located between the top keel, the bottom downwind track 2, and the suspension rod 52. The three are connected to form a stable triangular constraint structure to ensure the stability of the model's posture and the controllability of its motion trajectory during the test. At the same time, key parameters such as acceleration, displacement, and torsion angle are collected in real time through a wireless sensor network and transmitted to the data processing center for dynamic analysis.

[0040] Working principle: During the sliding test, the relative length between the adjusting rod 43 and the suspension rod 52 is first changed by adjusting the adjusting ring 42, thereby precisely controlling the initial position and attitude of the model in space to ensure that it is in the designed equilibrium state. Then, the upper displacement rod 3 is locked using the existing locking device, forming a "swing" with the upper part fixed and the lower part movable. This state is to simulate the force characteristics of a cable-stayed bridge or suspension structure with upper constraint and lower free vibration in actual structures. The damper 13 is adjusted to simulate the damping characteristics under the target working condition. Then, after starting the electric vibrator, a specific frequency is applied according to the experimental requirements. The excitation signal with rate and amplitude causes the structural model to generate a corresponding vibration response. At this time, the infrared detection unit continuously collects the real-time displacement data of the displacement rod 3 to form a displacement decay curve. Combined with the natural vibration torsion test system 14, the model's torsional angle change and torsional vibration response curve are recorded by the sensor. Thus, the torsional natural frequency and torsional damping ratio of the model are analyzed. Through the data acquisition system, time-domain and frequency-domain analysis is performed to extract the structure's natural frequency, damping ratio and mode shape parameters. Then, the dynamic characteristic evolution law of the model under different excitation conditions is evaluated, providing a high-precision test basis for the seismic and wind-resistant design of complex engineering structures.

[0041] Based on this sliding test, various additional adjustments can be made for further testing. For example, with the deformation resistance of the upper linear spring 51 remaining unchanged (tensile length unchanged), the initial highest point of the linear spring 51 can be changed by adjusting the threaded connection between the adjusting ring 42 and the adjusting rod 43, thereby adjusting the suspension point height and changing the suspension height of model 1 9 or model 2 10, thus studying the vibration mode changes of the structure under different sag conditions. Additionally, the adjusting ring 42 and adjusting rod 43 on different sides can be adjusted to different degrees to achieve the tilting of the model. Secondly, by adjusting the thread progression of the lower adjusting ring 42 and adjusting rod 43, the pretension of the linear spring 51 can be changed, thereby altering the overall stiffness distribution and further simulating the dynamic response characteristics of an actual bridge under temperature deformation or load migration. Thirdly, the suspension rod 52 can be detachably replaced by model 1 9 or model 2 10 to adapt to structural models with different masses and geometric parameters, in order to study the influence of different model masses on vibration control effects. Fourthly, by changing the installation angle of the damper 13 or adjusting its internal damping coefficient, the structure under different wind loads or seismic actions can be simulated. The energy dissipation mechanism, through the adjustable spring system 5 and the adjustable damper 13, naturally generates restoring force and damping force proportional to the model displacement and velocity matched to multiple scenarios. Together, they constitute the total load required by the model under multiple scenarios, thus simulating the stress state of the real structure under multiple working conditions of dynamic action. Fifth, under the premise of keeping the excitation conditions unchanged, the phase difference of the electric exciter is adjusted to study the influence of different excitation forces at multiple points on the torsional and lateral coupled vibration of the structure. Sixth, the locking position and spacing of the displacement rod 3 are adjusted to change the boundary conditions of the vibration initiation point, and then the influence of constraint stiffness on the nonlinear dynamic response of the system is analyzed. Through the layout and structural feature combination design of the above devices, the above multi-dimensional parameter adjustment and combination test can be carried out on a single device. Compared with the existing single device, it can detect more dimensions and better reveal the nonlinear dynamic behavior of the structure under complex environmental excitation. Furthermore, a high-fidelity numerical simulation model is constructed to achieve accurate prediction and optimization of the dynamic response of actual engineering structures, providing key experimental support for the vibration control and safety assessment of flexible structures such as long-span bridges and high-rise buildings.

[0042] In addition, when a locking test is required, adjustments are made based on the sliding test to lock all displacement rods 3, start the electric vibrator to generate a predetermined excitation signal, and record the acceleration, displacement, and strain response of each measuring point through the detection unit. The purpose of this is to simulate the rigid support boundary, such as the vibration characteristics of a rigid connection structure of a bridge bearing or building foundation, to avoid unexpected sliding of displacement rods 3 during the test, thereby ensuring the accuracy and repeatability of the test data. By fixing the position of displacement rods 3 with the locking device, the influence of rigid constraints on the system's natural frequency and mode shape distribution can be effectively tested.

[0043] Furthermore, setting up two models on the same device, requiring only changes to the fixed and sliding relationships, facilitates simultaneous sliding and fixed tests. This allows for a more intuitive and comparative analysis of the differences in structural dynamic responses under different boundary conditions (such as free, elastic support, and rigid fixation), thereby comprehensively evaluating the impact of boundary conditions on vibration transmission paths and modal coupling characteristics. It also improves experimental efficiency and data comparability, eliminating potential systematic errors between existing multiple devices.

[0044] Based on this, an automated vibration control testing method for two-dimensional structures is proposed, which is applied to the aforementioned automated vibration control testing device for two-dimensional structures, and includes the following steps:

[0045] S1: Erect a transverse track 1 and a windward track 2, and install multiple sets of displacement rods 3, a suspension point system 4, a spring system 5, a damper 13, and a self-vibration torsion testing system 14 to form a dual-model testing platform;

[0046] S2: Determine whether the single or dual model requirements are deployed on the dual model test platform, and determine whether the test state is sliding or fixed based on the test requirements;

[0047] S3: Based on the test status, multi-dimensional parameter adjustments are made, and then the electric vibrator is started to apply a predetermined excitation signal. Combined with the detection unit, the natural vibration, torsion, and displacement data of the two-dimensional structure under different working conditions are collected in real time.

[0048] S31: Multi-dimensional debugging includes suspension point height, tensile constraint stiffness, adaptation to multiple structural models, damping angle and damping coefficient, electric exciter phase difference and initial displacement spacing, to achieve precise control of dynamic response under different boundary conditions and external excitation combinations in structural simulation.

[0049] S4: Complete the test, dismantle the single or dual model, restore the dual model test platform, organize the data, and generate a modal parameter database for the corresponding working conditions. Example 2:

[0050] Based on Example 1, and referring to Figure 8As shown, it also includes a gravity block 15, which is located in the middle of the suspension rod 52. It can be fixed by an existing binding device that can be easily disassembled and its quantity increased or decreased. By setting it on both sides, the weight of model one 9 or model two 10 can be increased or decreased together. The gravity block 15 is designed to be stackable, and the number of gravity blocks 15 can be increased or decreased according to the test requirements to achieve the effect of stretching the linear spring 51 above. The height of model one 9 or model two 10 can be adjusted by the gravity block 15, which is equivalent to fixing the upper fulcrum. The height of the swing point can be changed by gradually increasing or decreasing the gravity block 15. In this way, without disassembling the same model, the displacement attenuation of the model at different heights under the same excitation force can be recorded step by step. In addition, the position of the gravity block 15 can be flexibly adjusted above the suspension rod 52 to change the mass distribution and center of gravity of the model, so that the model can be tilted. By adjusting the position of the gravity block 15 on the suspension rod 52, the center of gravity of the model can be precisely controlled, and the influence of the center of gravity shift on the torsional vibration characteristics and modal coupling of the structure can be further studied.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A two-dimensional structure automated vibration testing device, characterized in that: The system includes a transverse track (1), two sets of windward tracks (2), and a model unit. The transverse track (1) is located above the windward tracks (2). One set of windward tracks (2) is fixed to the ground, and the other set is fixed to the top external keel. Both sets of windward tracks (2) have grooves on their facing surfaces. The model unit can be slidably connected or locked between the two sets of windward tracks (2). The model unit includes two sets of model systems and two sets of model bodies. Each set of model systems includes a displacement rod (3), a suspension point system (4), a spring system (5), and a detection unit. The model body is located between the suspension rods (52) of the spring system (5), the displacement rod (3) can be slidably connected or locked in the sliding groove, and the two ends of the suspension point system (4) are respectively connected to the displacement rod (3) and the spring system (5); the detection unit is located between the suspension rod (52) and the two sets of downwind tracks (2); the electric vibrator is located between the displacement rod (3) and the downwind track (2), the electric vibrator is activated instantaneously to drive the model system to drive the model body to vibrate, and the detection unit collects vibration data; The lifting point system (4) consists of four sets of adjustable spacing lifting point systems (4). Each set of lifting point systems (4) includes a lifting rod (52), an adjusting ring (42), and an adjusting rod (43). The two ends of the adjusting ring (42) are threadedly and adjustablely connected to the lifting rod (52) and the adjusting rod (43) respectively. The end of the lifting rod (52) away from the adjusting ring (42) is connected to one of the displacement rods (3). The spring system (5) also includes four linear springs (51). One end of each of the four linear springs (51) is connected to the adjusting rod (43) of the four suspension point systems (4), and the other end is connected to two symmetrically arranged suspension rods (52). The two ends of the model body pass through the middle of the two suspension rods (52).

2. The two-dimensional structure automated control vibration testing device according to claim 1, characterized in that: There are four of each of the following track (2) and the transverse track (1), which are divided into two groups of two, one above the other. The two transverse tracks (1) of one group are symmetrically arranged between the two following tracks (2) of the other group.

3. The two-dimensional structure automated control vibration testing device according to claim 1, characterized in that: Each group of the model system has eight displacement rods (3), divided into upper and lower groups; both groups of displacement rods (3) can be slidably or locked into the groove of the downwind track (2).

4. The two-dimensional structure automated control vibration testing device according to claim 1, characterized in that: The detection unit includes an infrared detection system, a damper (13) and a self-vibration torsion test system (14). The infrared detection system is located between the downwind track (2) and the displacement rod (3). The damper (13) is adjustable between the downwind track (2) and the model body. The self-vibration torsion test system (14) is located between the spring system (5) and the model.

5. The automated vibration testing device for two-dimensional structures according to claim 4, characterized in that: The infrared detection system includes an extension rod (11) fixed to the displacement rod (3) and a sensing plate (12) provided on the suspension rod (52). The top of the extension rod (11) is provided with an infrared transmitter, and the sensing plate (12) is provided with a corresponding infrared receiving unit to detect the displacement of the displacement rod (3) in a non-contact manner.

6. The two-dimensional structure automated control vibration testing device according to claim 1, characterized in that: It also includes a gravity block (15), which is fixed to the boom (52) by a detachable binding device for adjusting the mass distribution, center of gravity and suspension height of the model.

7. The two-dimensional structure automated control vibration testing device according to claim 3, characterized in that: The displacement rod (3) is equipped with a locking device, which can fix the displacement rod (3) in the groove of the windward track (2) to switch the sliding test state and the fixed test state of the device.

8. A method for automated vibration testing of two-dimensional structures, applied to the automated vibration testing device for two-dimensional structures as described in claim 5, characterized in that, Includes the following steps: S1: Erect a transverse track (1) and a windward track (2) and install multiple sets of displacement rods (3), a suspension point system (4), a spring system (5), a damper (13) and a self-vibration torsion test system (14) to form a dual-model test platform; S2: Determine whether the single-model or dual-model requirements are to be arranged on the dual-model test platform, and determine whether the test state is sliding or fixed based on the test requirements; S3: Based on the test state, perform multi-dimensional parameter adjustment, then start the electric vibrator to apply the predetermined excitation signal, and combine the detection unit to collect the self-vibration, torsion, and displacement data of the two-dimensional structure under different working conditions in real time; wherein, the multi-dimensional parameter adjustment includes adjusting the height of the suspension point, adjusting the pre-tension of the linear spring (51), adjusting to adapt to different structural models, adjusting the angle and damping coefficient of the damper (13), adjusting the phase difference of the electric vibrator, and adjusting the initial displacement spacing; S4: After completing the test, dismantle the single or dual model, restore the dual model test platform, and organize the data to generate a modal parameter database for the corresponding working conditions.

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