Annular full-scale test road system based on various pavement structures and test method

Abstract

The invention provides an annular full-scale test road system based on various pavement structures and a test method, and relates to the technical field of pavement structure measurement. The invention designs an annular full-scale test road system and a test method, the system comprises a linear test road section module, an arc test road section module, an acceleration loading module, a detachable track module, a power center module, a sensor module, a sound barrier module and a data center module, field road conditions can be provided, the influence of a road boundary effect can be avoided, and meanwhile, the test efficiency can be improved. Different pavement structures are laid on the annular full-scale test road, the acceleration loading module runs on the annular full-scale test road, the consistency of environment and load conditions is ensured, finally, data acquisition and processing are performed through the sensor module and the data center module, mechanical response data sets of different pavement structures are obtained, and the mechanical response data sets are used for data processing. Therefore, a basis is provided for designing roads in different regions.

Description

Technical Field

[0001] This invention relates to the field of pavement structure measurement technology, and in particular to a full-scale annular test track system and test method based on various pavement structures. Background Technology

[0002] my country spans nearly 50 degrees of latitude, resulting in significant differences in temperature and precipitation between the north and south, as well as marked topographical variations. The western regions also experience high ultraviolet radiation. With economic development, transportation, serving as a vital link between cities, has led to the construction of extensive road networks. However, the environmental differences between roads in different regions are substantial, exhibiting their own unique characteristics. For example, Xinjiang has strong ultraviolet radiation, the Northeast experiences low road surface temperatures in winter, making roads prone to freezing and cracking, while the southern regions have high summer temperatures, making roads susceptible to rutting. Over time, problems have become apparent in roads across different regions. To address these issues, full-scale testing is an effective method for exploring safe road operation under conditions of extreme cold, high ultraviolet radiation, high humidity, and groundwater.

[0003] To address this issue, and to compare the performance of different pavement structures, it is necessary to study the differences in road service behavior under the same environmental and load conditions. The design of test pavement models has undergone a long development process, with continuous improvements in road environment simulation, monitoring and detection technologies, and data processing methods. Current technologies for road research typically design scaled-down roads, which suffer from boundary effects and cannot fully reflect the actual service conditions of roads. Therefore, the design of test pavements for full-scale tests is particularly important. Furthermore, current technologies have not conducted in-depth research on the consistency of environmental and load conditions. However, since the performance of different pavement structures is significantly affected by environmental and load conditions, ensuring consistency of environmental and load conditions is a key factor in pavement structure performance research. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a full-scale annular test track system and testing method based on various pavement structures. The invention designs a full-scale annular test track system and method that can provide on-site road conditions, avoiding the influence of road boundary effects. Furthermore, by laying different pavement structures on the full-scale annular test track and operating an accelerated loading module on it, consistency of environmental and load conditions is ensured. Finally, through sensor and data center modules, data is collected and processed to obtain mechanical response datasets for different pavement structures, thus providing a basis for road design in different regions. To achieve the above objectives, the technical solution is as follows: On one hand, the present invention provides a full-scale annular test track system based on various road surface structures, the system comprising: The straight test section module is used to provide a test area for straight road sections; The curved test section module is used to provide a test area for curved road sections; The accelerated loading module is used to simulate the dynamic loading of a vehicle under real-world conditions. Detachable track modules are used to provide access for construction vehicles on the test track; The power center module is used to provide power to the accelerated loading module; The sensor module is used to monitor and collect the test parameters of the test track in real time; Sound barrier modules are used to reduce noise generated during testing; The data center module is used to process the test data collected by the sensor module to obtain mechanical response datasets for different road structures; The straight test section module and the curved test section module are alternately connected to form a closed loop section, and the detachable track module is located on the straight test section module.

[0005] Optionally, the straight test track module includes: a straight test track and a straight track; The straight test track includes: a straight test track surface layer, a straight test track base layer, and a straight test track soil layer. The straight test track has concrete structural foundations on both sides. The linear track includes: a linear support box girder, a linear load-bearing rail, a linear guide side plate, and a linear support mounting frame.

[0006] Optionally, the curved test track module includes: a curved test track and a curved track; The curved test track includes: a curved test track surface layer, a curved test track base layer, and a curved test track soil layer. The two sides of the curved test track are concrete structural foundations. The curved track includes: an inner track and an outer track; The outer ring track includes: an outer ring support box girder, an outer ring load-bearing rail, an outer ring guide side plate, and an outer ring support mounting frame; The inner ring track includes: inner ring support box girder, inner ring load-bearing rail, inner ring guide side plate, inner ring reinforcing side plate and inner ring support mounting frame; The inner and outer tracks have the same dot position.

[0007] Optionally, the straight test section module is paved with straight test tracks of different structures; the curved test section module is paved with curved test tracks of different structures.

[0008] Optionally, the detachable track module includes: a lifting lug, a moving track, a pin, and a fixing bracket; The moving track makes contact with the straight track of the straight test section module; The movable track is fixedly connected to the lifting lug, which is located at both ends of the movable track; The moving track is connected to the fixed bracket via the pin.

[0009] Optionally, the sensor module includes any one or more of the following: a temperature sensor, a humidity sensor, a stress sensor, a strain sensor, a soil pressure sensor, an acceleration sensor, a dynamic weighing sensor, a vibration sensor, or a fiber optic sensor.

[0010] Optionally, the sensor module is laid in the straight test section module and the curved test section module; the stress sensor and the strain sensor are located on the upper surface of the straight test pavement layer of the straight test section module and the upper surface of the curved test pavement layer of the curved test section module; the earth pressure sensor is located on the upper surface of the base layer of the straight test pavement of the straight test section module and the upper surface of the base layer of the curved test pavement of the curved test section module; and the temperature sensor and the humidity sensor are located on the upper surface of each layer of the straight test section module and the upper surface of each layer of the curved test section module.

[0011] Optionally, the sound barrier module includes: barrier columns and sound-absorbing and sound-insulating panels; The barrier post is located on the outside of the straight test section module and the curved test section module; The sound-absorbing and sound-insulating panel is fixedly connected to the barrier column.

[0012] Optionally, by processing the test data collected by the sensor module, a mechanical response dataset for different pavement structures is obtained, including: Based on the experimental data collected by the sensor module, normalization processing is performed to obtain the normalized experimental parameters; Based on the normalized test parameters and the test track structure data stored in the data center module, comparison and filtering are performed to obtain the filtered data; The filtered data is matched with the test pavement structure data and saved to obtain a mechanical response dataset for different pavement structures.

[0013] On the other hand, the present invention provides a test method for a full-scale annular test track based on multiple pavement structures. This method is implemented by a full-scale annular test track system based on multiple pavement structures, and includes: S1. Select different test track materials according to the research objectives, and install the sensor module into the test track to obtain a ring-shaped test track; S2. Based on the annular test track, install the accelerated loading module and the power center module to obtain the annular test track device; S3. Based on the annular test track device, start the accelerated loading module and collect the test data collected by the sensor module. S4. Based on the test data collected by the sensor module, obtain the mechanical response dataset for different road surface structures.

[0014] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects: The above scheme has several aspects. First, it designs a full-scale circular test track system and testing method. This system can provide on-site road conditions and avoid the influence of road boundary effects. Second, by laying different pavement structures on the full-scale circular test track and running an accelerated loading module on it, the consistency of environmental and load conditions is ensured. Third, through sensor and data center modules, data is collected and processed to obtain mechanical response datasets for different pavement structures, thus providing a basis for road design in different regions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a system block diagram of an embodiment of the circular full-scale test track system based on various road surface structures of the present invention; Figure 2 This is a schematic diagram of an embodiment of the full-scale annular test track system based on various road surface structures of the present invention; Figure 3 This is a schematic diagram of the straight test track in an embodiment of the full-scale annular test track system based on multiple road surface structures of the present invention; Figure 4 This is a schematic diagram of the straight track in an embodiment of the full-scale annular test track system based on multiple road surface structures of the present invention; Figure 5 This is a schematic diagram of the detachable track module in an embodiment of the full-scale annular test track system based on various road surface structures of the present invention; Figure 6 This is a flowchart illustrating the process of obtaining mechanical response datasets for different pavement structures in an embodiment of the full-scale annular test track system based on multiple pavement structures according to the present invention. Figure 7 This is a plan view of the sensor module layout in an embodiment of the full-scale annular test track system based on various road surface structures of the present invention; Figure 8 This is a cross-sectional view of the sensor module layout in an embodiment of the full-scale annular test track system based on various road surface structures of the present invention; Figure 9This is a flowchart of an embodiment of the full-scale annular test track test method based on various road surface structures of the present invention.

[0017] The diagram shows the following numbered modules: Straight test track module 1, Curved test track module 2, Accelerated loading module 3, Detachable track module 4, Power center module 5, Sensor module 6, Sound barrier module 7, Data center module 8, Straight test track surface layer 111, Straight test track base layer 112, Straight test track soil layer 113, Concrete structure foundation 114, Straight support box girder 121, Straight load-bearing rail 122, Straight guide side plate 123, Straight support mounting frame 124, Lifting lug 41, Moving track 42, Pin shaft 43, Fixed bracket 44. Detailed Implementation

[0018] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0019] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0020] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 The system block diagram of the circular full-scale test track system based on various road surface structures of the present invention shown is as follows: Figure 2 The diagram shown is a schematic representation of an embodiment of the full-scale circular test track system based on multiple road surface structures of the present invention. The present invention provides a full-scale circular test track system based on multiple road surface structures, which can realize a test method for a full-scale circular test track based on multiple road surface structures. The system includes: a straight test section module 1, an arc test section module 2, an acceleration loading module 3, a detachable track module 4, a power center module 5, a sensor module 6, a sound barrier module 7, and a data center module 8. Straight test section module 1 is used to provide the test area for straight road sections; Specifically, the straight test section module 1 includes: a straight test track and a straight track; Furthermore, the straight test section module 1 is 40 meters long, 6 meters wide, and has an excavation depth of approximately 2 meters.

[0022] like Figure 3The diagram shown is a schematic diagram of the structure of the straight test track in an embodiment of the circular full-scale test track system based on multiple road surface structures of the present invention. The straight test track includes: a straight test track surface layer 111, a straight test track base layer 112, and a straight test track soil layer 113. The two sides of the straight test track are concrete structure foundations 114. like Figure 4 The diagram shown is a schematic representation of the linear track in an embodiment of the full-scale circular test track system based on various road surface structures of the present invention. The linear track includes: a linear support box girder 121, a linear bearing rail 122, a linear guide side plate 123, and a linear support mounting frame 124.

[0023] Furthermore, the linear support box girder 121 adopts an H-beam welded structure, which can simultaneously withstand the vertical loading reaction force and the lateral displacement force of the horizontal loading device. The material of the linear support box girder 121 is low-alloy steel, and its cross-sectional area was determined through finite element analysis. Carbon dioxide gas shielded welding is used, and the base material has good weldability. To reduce local wavy edges and other forms of distortion in the appearance of the linear support box girder 121 after welding, the shrinkage of the weld seam is considered during plate cutting. After welding, the end faces of the linear support box girder 121 are machined to ensure that the dimensional tolerances of each section are within the required range.

[0024] The straight track 122 is made of heavy rail, model 60, with a chemical composition of U71Mn. This heavy rail is selected for use on main railway lines, dedicated lines, curves, and tunnels. The heavy rail must withstand the pressure, impact loads, and friction forces of the accelerating loading device during operation, therefore requiring sufficient strength, hardness, and a certain degree of toughness. Compared to ordinary rails, it has a larger cross-section and can withstand greater loads.

[0025] The linear guide side plate 123 is made of high-strength wear-resistant steel plate. The high-strength wear-resistant steel plate is graded NM400, with a surface hardness of 360-450HB, and is widely used in parts of engineering machinery, mining machinery, and other products.

[0026] The straight test section module 1 is laid with straight test tracks of different structures.

[0027] Furthermore, in this straight test section module 1, a different pavement structure is laid every 20 meters. Specifically, pavement structure 1 is as follows: The straight test pavement 111 can be made of 5cm thick SMA-16, 6cm thick dense-graded medium-grained asphalt concrete and 7cm thick coarse gravel asphalt concrete from top to bottom. The base course 112 of the straight test track can be 20cm thick cement-stabilized crushed stone, 20cm thick cement-stabilized crushed stone (gravel), and 20cm thick lime-fly ash stabilized crushed stone (or gravel) from top to bottom. The soil layer 113 of the straight test track is located below the base course 112.

[0028] The foundation material of soil layer 113 in the straight test track is: C30 strength concrete, with some concrete being impermeable concrete with an impermeability grade of P6; and HRB400 steel reinforcement.

[0029] Specific road surface structure 2: The surface layer 111 of the straight test track can be 4cm thick SMA-13, 6cm thick AC-20C, and 8cm thick ATB-25 from top to bottom; The base course 112 of the straight test track can be 18cm thick cement-stabilized crushed stone, 18cm thick cement-stabilized crushed stone (gravel) and 18cm thick lime-fly ash stabilized crushed stone from top to bottom. The soil layer 113 of the straight test track is located below the base course 112.

[0030] The foundation material for the soil layer 113 of the straight test road is a 40cm thick compacted subgrade with no less than two layers.

[0031] Arc test section module 2 is used to provide a test area for curved road sections; Specifically, the curved test track module 2 includes: a curved test track and a curved track; The curved test track includes: a curved test track surface layer, a curved test track base layer, and a curved test track soil layer. The two sides of the curved test track are concrete structural foundations. The curved track includes: an inner track and an outer track; Furthermore, the inner track is approximately 42 meters long, and the outer track is approximately 60 meters long. The outer track has the same structure as the straight track.

[0032] The outer ring track includes: an outer ring support box girder, an outer ring load-bearing rail, an outer ring guide side plate, and an outer ring support mounting frame; Furthermore, the spacing between the outer ring support mounting frames was determined to be 3 meters through finite element analysis.

[0033] The inner ring track includes: inner ring support box girder, inner ring load-bearing rail, inner ring guide side plate, inner ring reinforcing side plate and inner ring support mounting frame; The inner and outer tracks have the same dot position.

[0034] The curved test section module 2 is equipped with curved test tracks of different structures.

[0035] Accelerated loading module 3 is used to simulate the dynamic loading of a vehicle under actual conditions; Detachable track module 4 is used to provide an entrance and exit for construction vehicles on the test track; Specifically, such as Figure 5 The diagram shown is a structural schematic of a detachable track module in an embodiment of the full-scale circular test track system based on various road surface structures of the present invention. The detachable track module 4 includes: a lifting lug 41, a movable track 42, a pin 43, and a fixed bracket 44. The moving track 42 is in contact with the straight track of the straight test section module 1; The movable track 42 is fixedly connected to the lifting lug 41, which is located at both ends of the movable track 42; The movable track 42 is connected to the fixed bracket 44 via the pin 43.

[0036] Power center module 5 is used to provide power to the acceleration loading module 3; Sensor module 6 is used to monitor and collect the test parameters of the test track in real time; Specifically, the sensor module 6 includes any one or more of the following: a temperature sensor, a humidity sensor, a stress sensor, a strain sensor, a soil pressure sensor, an acceleration sensor, a dynamic weighing sensor, a vibration sensor, or a fiber optic sensor.

[0037] Specifically, the sensor module 6 is laid on the straight test section module 1 and the curved test section module 2; the stress sensor and the strain sensor are located on the upper surface of the straight test pavement of the straight test section module 1 and the upper surface of the curved test pavement of the curved test section module 2; the earth pressure sensor is located on the upper surface of the base layer of the straight test pavement of the straight test section module 1 and the upper surface of the base layer of the curved test pavement of the curved test section module 2; and the temperature sensor and the humidity sensor are located on the upper surfaces of each layer of the straight test section module 1 and the upper surfaces of each layer of the curved test section module 2.

[0038] Furthermore, such as Figure 7 The sensor module layout diagram shown in the embodiment of the circular full-scale test track system based on various road surface structures of the present invention is as follows: Figure 8 The diagram shown is a cross-sectional view of the sensor module layout in an embodiment of the circular full-scale test track system based on various road surface structures of the present invention. Sensors are laid on the upper surfaces of the surface layer, base layer, and subgrade of the straight test track module 1 and the curved test track module 2. The sensors laid on the surface layer of the straight test track of the straight test track module 1 and the surface layer of the curved test track of the curved test track module 2 need to be grooved on the surface and the sensor module 6 and the connecting wires are embedded into the upper surface of the surface layer. The sensor module 6 of the surface layer needs to be grooved while the asphalt is still warm, which makes it easier to operate.

[0039] The stress sensor and strain sensor are used to measure the horizontal and vertical strain response of the pavement structure at the bottom or within the layers under vehicle loads. The stress sensor and strain sensor used include an asphalt strain gauge and an earth pressure stress cell. To accurately measure the tensile strain at the bottom of the asphalt layer, longitudinally and laterally placed strain gauges were embedded at the bottom of the asphalt layer to observe and collect the longitudinal and transverse horizontal strains at the bottom of each asphalt layer, and to study their variation patterns under repeated wheel loads and external environmental influences.

[0040] To gain a comprehensive understanding of the overall performance of the pavement structure, it is necessary to measure not only the mechanical response in the surface layer but also the changes in the mechanical response at the top of the subgrade. Since the vertical compressive stress on the top surface of the subgrade is inextricably linked to the fatigue cracking of the pavement, it directly affects the overall performance of the pavement structure. Therefore, earth pressure sensors are embedded at the top of the subgrade to measure the vertical compressive stress. The vertical compressive stress or strain on the top surface of the subgrade is one of the important design indicators for asphalt pavement structures, ensuring the stability and durability of the pavement structure by limiting the permanent deformation of the pavement and subgrade. The dynamic stress response of the top surface of the subgrade is tested using embedded dynamic earth pressure cells.

[0041] The temperature and humidity fields of a road surface are highly variable, and the internal temperature and humidity are even more complex. Furthermore, asphalt mixtures are temperature-sensitive materials, and their mechanical properties vary significantly with temperature changes. To accurately understand the temperature and humidity variations within the asphalt layer and their impact on the mechanical properties of the road structure, temperature and humidity sensors are embedded within the road structure. To measure the temperature and humidity at different depths of the asphalt layer, resistance temperature and humidity sensors are embedded along the depth direction of the road structure, starting from the road surface.

[0042] Sound barrier module 7 is used to reduce noise generated during the test; Specifically, the sound barrier module 7 includes: barrier columns and sound-absorbing and sound-insulating panels; The barrier post is located on the outside of the straight test section module and the curved test section module; The sound-absorbing and sound-insulating panel is fixedly connected to the barrier column.

[0043] Furthermore, the sound barrier module uses a transparent polycarbonate sheet structure. The barrier column is the main load-bearing component of the sound barrier, which is bolted or welded to the pre-embedded steel plate on the side of the track. The sound-absorbing and sound-insulating panel is the main sound-absorbing and sound-insulating component, which is fixed to the barrier column by high-strength spring clips to form a sound barrier. The sound-absorbing and sound-insulating panel is made of PC polycarbonate sheet, and the length of the sound-absorbing and sound-insulating panel is about 80m and the height is 2.5m.

[0044] Data center module 8 is used to process the test data collected by sensor module 6 to obtain mechanical response datasets for different road structures; Specifically, such as Figure 6 The flowchart shown in this embodiment of the circular full-scale test track system based on multiple pavement structures of the present invention illustrates the process of obtaining mechanical response datasets for different pavement structures. This involves processing the test data collected by the sensor module to obtain mechanical response datasets for different pavement structures, including: Based on the test data collected by the sensor module 6, normalization processing is performed to obtain the normalized test parameters; Based on the normalized test parameters and the test track structure data stored in the data center module 8, comparisons and filtering are performed to obtain the filtered data; The filtered data is matched with the test pavement structure data and saved to obtain a mechanical response dataset for different pavement structures.

[0045] The straight test section module 1 and the curved test section module 2 are alternately connected to form a closed loop section, and the detachable track module 4 is located on the straight test section module 1.

[0046] like Figure 9 The flowchart shown is an embodiment of the test method for a full-scale annular test track based on multiple pavement structures according to the present invention. The present invention provides a test method for a full-scale annular test track based on multiple pavement structures. The method comprises a full-scale annular test track system based on multiple pavement structures, and includes: S1. Select different test track materials according to the research objectives, and install the sensor module into the test track to obtain a ring-shaped test track; S2. Based on the annular test track, install the accelerated loading module and the power center module to obtain the annular test track device; S3. Based on the annular test track device, start the accelerated loading module and collect the test data collected by the sensor module. S4. Based on the test data collected by the sensor module, obtain the mechanical response dataset for different road surface structures.

[0047] This invention provides a full-scale circular test track system and testing method based on various pavement structures. The system includes a straight test section module, a curved test section module, an accelerated loading module, a detachable track module, a power center module, a sensor module, a sound barrier module, and a data center module. It provides on-site road conditions, avoiding the influence of road boundary effects. Furthermore, by laying different pavement structures on the full-scale circular test track and operating the accelerated loading module on it, consistency of environmental and load conditions is ensured. Finally, data acquisition and processing are performed through the sensor and data center modules to obtain mechanical response datasets for different pavement structures, thus providing a basis for road design in different regions.

[0048] It is understood that the present invention has been described through the above embodiments and should not be construed as limiting the implementation and scope of the present invention. Those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A full-scale annular test track system based on multiple road surface structures, characterized in that, The system includes: The straight test section module is used to provide a test area for straight road sections; The curved test section module is used to provide a test area for curved road sections; The accelerated loading module is used to simulate the dynamic loading of a vehicle under real-world conditions. Detachable track modules are used to provide access for construction vehicles on the test track; A power center module is used to provide power to the accelerated loading module; A sensor module is used to monitor and collect the test parameters of the test track in real time; Sound barrier modules are used to reduce noise generated during testing; The data center module is used to process the test data collected by the sensor module to obtain a dataset of the mechanical response of different road structures. The straight test section module and the curved test section module are alternately connected to form a closed loop section, and the detachable track module is located on the straight test section module.

2. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The straight test section module includes: a straight test track and a straight track; The straight test track includes: a straight test track surface layer, a straight test track base layer, and a straight test track soil layer, with concrete structural foundations on both sides of the straight test track; The linear track includes: a linear support box girder, a linear load-bearing rail, a linear guide side plate, and a linear support mounting frame.

3. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The curved test track module includes: a curved test track and a curved track; The arc test track includes: an arc test track surface layer, an arc test track base layer, and an arc test track soil layer, with concrete structural foundations on both sides of the arc test track; The curved track includes: an inner track and an outer track; The outer ring track includes: an outer ring support box girder, an outer ring load-bearing rail, an outer ring guide side plate, and an outer ring support mounting frame; The inner ring track includes: an inner ring support box girder, an inner ring load-bearing rail, an inner ring guide side plate, an inner ring reinforcing side plate, and an inner ring support mounting frame; The inner and outer tracks have the same dot position.

4. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The straight test section module is equipped with straight test tracks of different structures; the curved test section module is equipped with curved test tracks of different structures.

5. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The detachable track module includes: a lifting lug, a movable track, a pin, and a fixed bracket; The moving track is in contact with the straight track of the straight test section module; The movable track is fixedly connected to the lifting lugs, which are located at both ends of the movable track; The moving track is connected to the fixed bracket via the pin.

6. The annular full-scale test track system based on multiple road surface structures according to claim 1, characterized in that, The sensor module includes any one or more of the following: temperature sensor, humidity sensor, stress sensor, strain sensor, soil pressure sensor, acceleration sensor, dynamic weighing sensor, vibration sensor, or fiber optic sensor.

7. The annular full-scale test track system based on multiple road surface structures according to claim 6, characterized in that, The sensor module is installed on the straight test section module and the curved test section module; The stress sensor and the strain sensor are located on the upper surface of the straight test pavement of the straight test section module and the upper surface of the curved test pavement of the curved test section module. The earth pressure sensor is located on the upper surface of the base layer of the straight test pavement of the straight test section module and the upper surface of the base layer of the curved test pavement of the curved test section module. The temperature sensor and the humidity sensor are located on the upper surface of each layer of the straight test section module and the upper surface of each layer of the curved test section module.

8. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The sound barrier module includes: barrier columns and sound-absorbing and sound-insulating panels; The barrier pillars are located outside the straight test section module and the curved test section module; The sound-absorbing and sound-insulating panel is fixedly connected to the barrier column.

9. The full-scale annular test track system based on multiple road surface structures according to claim 1, characterized in that, The process of processing the test data collected by the sensor module to obtain mechanical response datasets for different road structures includes: The test data collected by the sensor module is normalized to obtain the normalized test parameters. Based on the normalized test parameters and the test track structure data stored in the data center module, comparison and filtering are performed to obtain the filtered data; The filtered data is matched with the test pavement structure data and saved to obtain a mechanical response dataset for different pavement structures.

10. A test method for a full-scale annular test track based on multiple pavement structures, wherein the test method is implemented by the full-scale annular test track system based on multiple pavement structures according to any one of claims 1-9, characterized in that, The method includes: S1. Select different test track materials according to the research objectives, and install the sensor module into the test track to obtain a ring-shaped test track; S2. Based on the annular test track, install the accelerated loading module and the power center module to obtain the annular test track device; S3. According to the circular test track device, start the accelerated loading module and collect the test data collected by the sensor module. S4. Based on the test data collected by the sensor module, obtain the mechanical response dataset for different road surface structures.

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