Reinforced soil bridge abutment system in frozen soil area and construction method of reinforced soil bridge abutment system

Abstract

The invention discloses a reinforced soil bridge abutment system in a frozen soil area and a construction method of the reinforced soil bridge abutment system. The reinforced soil bridge abutment system comprises a reinforced soil bridge abutment body, a ground source heat pump regulation and control system, a clean energy power supply system and a monitoring system. The reinforced soil bridge abutment body comprises filling soil, rib materials and a prefabricated modular wall face, a buried circulating pipe group of the ground source heat pump regulation and control system deeply penetrates through a frozen soil layer to a stable soil layer, and a heat pump host transfers heat of a bridge abutment base in a high-temperature season to prevent frozen soil from melting by means of a double-circulation pipeline and depending on temperature sensor data and weather forecast data. And reversely supplementing heat in low-temperature seasons to inhibit frost heaving. The heat pump host and the monitoring system of the clean energy power supply system supply power in a time-sharing manner to guarantee core functions. The monitoring system comprises a temperature sensor, a strain gauge and an inclinometer. The problems of stability and frost heaving and thaw collapse of the abutment in the frozen soil area are effectively solved, and economic and social benefits are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering in cold regions, and in particular to a reinforced earth abutment system in frozen regions and a construction method thereof. Background Art

[0002] There are many challenges in constructing transportation infrastructure in permafrost areas. Permafrost has special physical and mechanical properties, and its thermal stability is easily affected by external environmental factors. With global warming and the interference of engineering activities, the upper limit of permafrost in permafrost areas has decreased and the thawing depth has increased, posing a serious threat to the stability of structures such as abutments. Traditional reinforced earth abutments are difficult to adapt to complex temperature changes in permafrost areas. The alternating frost heave and thaw settlement causes the abutments to bear uneven forces. During frost heave, the abutments displace, deform, or even tilt, and during thaw settlement, the foundation settles. Repeated cycles damage the abutment structure, thereby affecting the normal use of the bridge and traffic safety. While ground-source heat pumps can regulate permafrost temperature, they have significant drawbacks. A single heat exchange mode can easily lead to a heat-cold imbalance, impacting operational efficiency and lifespan. Their reliance on an external power grid limits their application in remote permafrost areas due to unstable power supply and high costs. Monitoring systems also face challenges in remote permafrost areas. Unstable power leads to frequent power outages, while low temperatures and remote locations result in insufficient battery life. Traditional batteries experience performance degradation and difficulty charging, making real-time, comprehensive monitoring impossible and potential safety hazards difficult to detect in a timely manner. Therefore, building a stable, reliable, and energy-efficient reinforced earth abutment system in permafrost areas has become an urgent issue to be addressed. Summary of the Invention

[0003] In order to solve the limitations and defects of the existing technology, the present invention provides a reinforced earth bridge abutment system in frozen soil areas based on the coordinated regulation of ground source heat pumps and clean energy, including a reinforced earth bridge abutment body, a ground source heat pump regulation system, a clean energy power supply system, and a monitoring system; The reinforced earth abutment body includes a pavement structure, a bridge superstructure, a reinforced earth approach, a pedestal, fill, reinforcement and a prefabricated modular wall. The pavement structure is arranged on top of the bridge superstructure and the reinforced earth approach. The bridge superstructure and the reinforced earth approach are arranged in parallel. The bottoms of the bridge superstructure and the reinforced earth approach are both overlapped on the pedestal. The pedestal and the reinforced earth approach are both arranged on top of the reinforced earth abutment system. The ground source heat pump control system includes an underground circulation pipe group, a heat pump host and a fan coil unit. The underground circulation pipe group includes a hot circulation pipeline and a cold circulation pipeline. An evaporator and a condenser are provided in the heat pump host. The evaporator and the condenser are respectively connected to the fan coil unit. The buried circulation pipe group is buried deep enough to penetrate the frozen soil layer to the stable soil layer. The heat pump host realizes heat exchange through the hot circulation pipeline and the cold circulation pipeline. The clean energy power supply system includes a solar power generation device, a wind power generation device, a power supply device, a wind-solar hybrid controller, a battery and an inverter; The monitoring system includes a strain gauge, a temperature sensor and an inclinometer. The strain gauge is used to monitor the strain of the reinforced earth abutment in real time, the inclinometer is used to monitor the inclination angle of the reinforced earth abutment in real time, and the temperature sensor is used to monitor the temperature of the abutment base and the temperature of the frozen soil around the abutment base in real time.

[0004] Optionally, the reinforcement material includes geosynthetic reinforcement material, and the geosynthetic reinforcement material adopts layered geogrids or geotextiles.

[0005] Optionally, in the layered structure of the geosynthetics reinforcement, the vertical spacing between each layer is less than or equal to 0.3 m.

[0006] Optionally, the heat circulation pipeline adopts a polyethylene tube or a polybutylene tube, and the cold circulation pipeline adopts a polyethylene tube or a polybutylene tube, and the diameter of the polyethylene tube or the polybutylene tube is 100 mm-200 mm.

[0007] Optionally, the heat circulation pipeline and the cold circulation pipeline are arranged in parallel, and the effective influence radius of the heat circulation pipeline and the cold circulation pipeline centered on a single circulation pipeline is twice the pipeline diameter.

[0008] Optionally, in the stabilized soil layer, the heat circulation pipeline and the cold circulation pipeline are arranged vertically with a horizontal spacing of 300mm-600mm; inside the abutment system, the heat circulation pipeline and the cold circulation pipeline are arranged in an S-shaped manner, starting from the vertical pipeline interface of the stabilized soil layer, set in the middle position of the two layers of reinforcement, and extending upward in an S-shaped curve.

[0009] Optionally, the ground-source heat pump control system is used to adjust the power of the heat pump host according to the temperature data collected by the temperature sensor and weather forecast information.

[0010] Optionally, the geothermal heat pump control system is used to transfer the heat from the abutment base to the stabilized soil layer when the air temperature is greater than or equal to a preset value in the high temperature season, thereby preventing the frozen soil layer from melting; the geothermal heat pump control system is used to transfer the heat from the stabilized soil layer to the abutment base when the air temperature is less than or equal to a preset value in the low temperature season, thereby suppressing frost heave of the frozen soil layer. The present invention also provides a construction method for a reinforced earth abutment system in a frozen soil region based on the coordinated regulation of a ground source heat pump and clean energy, comprising: Step S1: Leveling the site, conducting a geological survey of the site, obtaining geological data of the site, and transporting construction materials and equipment to a preset location; Step S2: making prefabricated modular walls according to preset dimensions; Step S3: Install the prefabricated modular wall panels on the foundation surface in sequence. Step S4: After the installation of each layer of the prefabricated modular wall is completed, an inclinometer and reinforcement are installed, and the reinforcement is firmly connected to the prefabricated modular wall to form a reinforced soil structure; Step S5: Fill soil that meets the preset standards is selected and compacted in layers, and strain gauges and temperature sensors are installed simultaneously. The temperature sensors are set at the connection between the abutment base and the reinforcement and at the connection between the frozen soil layer and the reinforcement; Step S6: Drill holes from the frozen soil layer to the stable soil layer, insert the underground circulation pipe group, install the heat pump host and fan coil, and connect the hot circulation pipe and the cold circulation pipe; Step S7: Determine the installation position and installation angle of the solar power generation device and the wind power generation device according to local terrain and meteorological conditions, fix the solar power generation device and the wind turbine generator according to the installation position and the installation angle, and connect the solar power generation device and the wind turbine generator to a wind-solar hybrid controller respectively; Step S8: Leveling the fill surface, placing a pedestal on the abutment, and constructing a reinforced earth approach behind the pedestal until the height of the reinforced earth approach is consistent with the top of the pedestal; Step S9: The bridge superstructure is arranged on the other side of the pedestal, and after the deformation is stabilized, a pavement structure is laid on the bridge superstructure. Optionally, the geological data of the site include the thickness of the permafrost layer, the depth of the stable soil layer, and the soil thermal conductivity.

[0011] The present invention has the following beneficial effects: Improve the stability of bridge abutments: The ground-source heat pump control system can accurately adjust the temperature of the frozen soil, effectively preventing the melting of the frozen soil and excessive frost heave, maintaining the stability of the abutment base, reducing the deformation and settlement of the abutment, extending the service life of the bridge, and ensuring traffic safety.

[0012] Sustainable energy utilization: Utilizing a clean energy power supply system, fully leveraging the advantages of wind and solar energy, achieving energy self-sufficiency and reducing dependence on traditional energy sources. This is especially suitable for remote frozen areas, where energy storage modules are adapted to low-temperature environments, ensuring a stable energy supply.

[0013] Intelligent monitoring and control: The monitoring system collects real-time data on the abutment structure and surrounding frozen soil. The ground-source heat pump control system and clean energy power supply system are intelligently adjusted based on the monitoring data and weather forecasts, improving the efficiency and reliability of system operation and realizing intelligent management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a reinforced earth abutment system in a frozen region based on coordinated regulation of a ground source heat pump and clean energy, provided in Example 1 of the present invention.

[0015] Figure 2 This is a working principle diagram of the double-circulation pipeline of the ground source heat pump provided in Example 1 of the present invention.

[0016] Figure 3 This is a circuit connection diagram of the wind-solar complementary power supply and energy storage system provided in Example 1 of the present invention.

[0017] Among them, 1-pavement structure; 2-bridge superstructure; 3-reinforced earth approach; 4-pedestal; 5-reinforcement; 6-prefabricated modular wall; 7-foundation; 8-heat circulation pipeline; 9-cold circulation pipeline; 10-heat pump main unit; 11-evaporator; 12-condenser; 13-fan coil; 14-solar power generation device; 15-wind power generation device; 16-power supply device; 17-strain gauge; 18-temperature sensor; 19-inclinometer; 20-wind-solar hybrid controller; 21-battery; 22-inverter. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the frozen soil reinforced soil abutment system and the construction method thereof provided by the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0019] This embodiment provides a reinforced earth abutment system in a frozen soil area based on the coordinated regulation of a ground source heat pump and clean energy, comprising a reinforced earth abutment body, a ground source heat pump regulation system, a clean energy power supply system and a monitoring system. The reinforced earth abutment body comprises a pavement structure, a bridge superstructure, a reinforced earth approach, a pedestal, backfill, geosynthetic reinforcement and a prefabricated modular wall, and the bridge superstructure and the reinforced earth approach are directly connected; the ground source heat pump regulation system comprises a vertical buried pipe group, a heat pump main unit and a fan coil unit, the vertical buried pipe group is buried deep enough to penetrate the frozen soil active layer to the stable stratum, and the heat pump main unit realizes heat exchange through a dual circulation system comprising a hot circulation pipeline and a cold circulation pipeline; the clean energy power supply system comprises a wind-solar complementary power generation device consisting of a solar panel and a vertical axis wind turbine and an energy storage module; the monitoring system comprises a strain gauge, an inclinometer and a temperature sensor, and the temperature sensor monitors the temperature of the abutment base and the surrounding frozen soil in real time.

[0020] In this embodiment, the geosynthetics reinforcements are layered geogrids or geotextiles with vertical spacing ≤0.3m. The circulation piping of the ground-source heat pump control system utilizes polyethylene (PE) or polybutylene (PB) pipes with a diameter of 100-200mm. The buried circulation pipes are arranged in parallel, with a single circulation pipe at the center, and their effective radius of influence is approximately twice the pipe diameter. Within the stabilized soil layer, the pipes are laid vertically with horizontal spacing of 300-600mm. Within the abutment system, the pipes are laid out in an S-shaped pattern, extending upward from the vertical pipe interface in the stabilized soil layer in an S-shaped curve, and positioned between two layers of reinforcement. The ground-source heat pump control system's heat pump dynamic control method involves: during hot seasons, the heat pump transfers heat from the abutment base to deeper strata to prevent permafrost thawing; during cold seasons, the heat pump operates in reverse to replenish heat to the permafrost layer and suppress excessive frost heave. The control logic dynamically adjusts the heat pump power based on temperature sensor data and weather forecasts. In this embodiment, the clean energy power supply system's energy optimization management method includes: prioritizing wind power, with wind power prioritized during high wind speeds in low-temperature seasons; synergistic solar and energy storage, with direct solar power and energy storage backup during high-temperature seasons with ample sunlight; and time-sharing power supply for the heat pump mainframe and monitoring system, with core functions protected by priority circuits. The clean energy power supply system's energy storage module, comprised of lithium batteries and supercapacitors, is adaptable to low-temperature environments.

[0021] Figure 1 This is a structural diagram of a reinforced earth abutment system in a frozen soil region based on coordinated regulation of ground source heat pumps and clean energy, as provided in the first embodiment of the present invention. Figure 1 As shown, the reinforced earth abutment body includes a pavement structure 1, a bridge superstructure 2, a reinforced earth approach 3 and a pedestal 4. The pavement structure 1 is located on the top of the bridge superstructure 2 and the reinforced earth approach 3. The bridge superstructure 2 and the reinforced earth approach 3 are arranged in parallel, and the bottoms of both are overlapped on the pedestal 4; the pedestal 4 and the reinforced earth approach 3 are both located on the top of the reinforced earth abutment system.

[0022] Figure 2 This is a working principle diagram of the double-circulation pipeline of the ground source heat pump provided in Example 1 of the present invention. Figure 2As shown, the ground source heat pump control system includes a heat circulation pipeline 8, a cold circulation pipeline 9, a heat pump main unit 10 and a fan coil 13. The heat pump main unit 10 is equipped with an evaporator 11 and a condenser 12, which are connected to the fan coil 13 to achieve efficient heat circulation transfer. In the hot season, the heat pump main unit 10 starts working, absorbing heat from the abutment base with the help of the evaporator 11, and then transmits the heat to the deep stratum through the heat circulation pipeline 8 through the condenser 12, thereby effectively preventing the permafrost from melting due to excessive temperature. When it is cold, the heat pump main unit 10 runs in reverse. At this time, the evaporator 11 absorbs heat from the deep stratum, and then the condenser 12 transmits the heat to the permafrost layer through the cold circulation pipeline 9, thereby suppressing excessive frost heave of the permafrost layer. The control logic of the system is highly intelligent. Based on the temperature data of the abutment base and surrounding permafrost collected in real time by the temperature sensor 18, and combined with accurate weather forecast information, it dynamically and accurately adjusts the power of the heat pump main unit 10 to ensure that the ground-source heat pump control system can always operate stably and efficiently according to environmental changes, providing continuous and stable temperature regulation for the reinforced earth abutment system in the permafrost area.

[0023] Figure 3 This is a circuit connection diagram of the wind-solar complementary power supply and energy storage system provided in the first embodiment of the present invention. Figure 3 As shown, the clean energy power supply system includes a solar power generation device 14, a wind power generation device 15, a power supply device 16, a wind-solar hybrid controller 20, a battery 21, and an inverter 22. When the weather turns cold and high wind speeds enter, the wind power generation device 15 will take priority in powering the system. When the weather turns warm and sunlight is sufficient, the system switches to a photovoltaic-storage hybrid mode, with the solar power generation device 14 directly supplying power to the system to meet real-time electricity demand. At the same time, excess electricity is stored in the battery 21 through the power supply device 16 as a backup energy source for use in periods of insufficient sunlight, ensuring the stability and continuity of the energy supply. In addition, considering the priority of system power consumption, the heat pump main unit 10 and the monitoring system adopt a time-sharing power supply mechanism. By setting a priority circuit in the power supply device 16, power can be accurately allocated according to the criticality of system operation.

[0024] In this embodiment, the monitoring system includes a strain gauge 17, a temperature sensor 18, and an inclinometer 19. The power supply of the monitoring system comes from a clean energy power supply system, and the two work closely together. The strain gauge 17, temperature sensor 18, and inclinometer 19 are precisely deployed at key structural locations of the reinforced earth abutment, monitoring key data such as strain, temperature, and inclination angle of the reinforced earth abutment structure in real time and in all directions. The collected data is transmitted to the data processing center in an efficient and stable manner with the help of an advanced long-distance wireless transmission system. The data processing center conducts in-depth analysis and processing of these real-time data, and then dynamically adjusts the relevant parameters of the reinforced earth abutment system based on the analysis results.

[0025] This embodiment provides a reinforced earth abutment system for permafrost areas based on the coordinated regulation of ground source heat pumps and clean energy, including a reinforced earth abutment body, a ground source heat pump regulation system, a clean energy power supply system, and a monitoring system. The reinforced earth abutment body mainly bears the load-bearing function. Through its reasonable structural design and material selection, it provides stable and reliable support for the bridge superstructure and solves the problem of differential settlement in the road-bridge transition section; the ground source heat pump regulation system is responsible for realizing heat circulation, accurately adjusting the permafrost temperature according to different seasons and ambient temperature changes, and maintaining soil stability; the clean energy power supply system makes full use of wind and light energy resources, converts natural energy into electrical energy through solar power generation devices and vertical axis wind power generation devices, and provides sustainable power supply guarantee for the operation of the entire system; the monitoring system collects relevant data on the abutment structure and the surrounding permafrost in real time. Based on the data fed back by the monitoring system, the ground source heat pump regulation system and the clean energy power supply system adjust the operating parameters in a timely and intelligent manner to ensure that the entire reinforced earth abutment system in permafrost areas is always in an efficient and stable operating state. Example 2

[0026] This embodiment provides a construction method for a reinforced earth bridge abutment system in a frozen soil region based on the first embodiment, comprising the following steps: Step 1: Level the site, bring in the materials and equipment needed for construction, and complete the preparatory work before construction; Step 2: Carry out foundation work and completely wrap the wall edge and the wing walls on both sides with geosynthetics; Step 3: Install prefabricated modular wall units on the foundation surface in sequence; Step 4: After each layer of wall unit is installed, install the inclinometer and lay the reinforcement; Step 5: Select fill soil that meets the design requirements, fill and compact it in layers, and install strain gauges and temperature sensors simultaneously; Step 6: Drill holes and insert the underground circulation pipe group, install the heat pump host and fan coil, and connect the dual circulation pipeline; Step 7: Install wind and solar power generation equipment and debug the intelligent control system; Step 8: Construction of pedestal and reinforced earth approach road; Step 9: Construct the bridge superstructure and pavement structure. In this embodiment, the drilling depth must be precisely controlled to ensure that the buried pipes penetrate the active permafrost layer to the stable stratum. The heat pump piping connections must be well sealed to prevent leakage. When installing wind and solar power generation equipment, the installation location and angle must be appropriately determined based on local terrain and meteorological conditions. When commissioning the intelligent control system, all sensors, transmission modules, and control logic must be thoroughly tested and optimized.

[0027] 1. Pre-construction preparation Site survey: Conduct a detailed geological survey of the abutment construction site to clarify parameters such as the thickness of the permafrost active layer, the depth of the stable stratum, and the soil thermal conductivity. At the same time, collect local meteorological data, including sunshine duration, wind speed and direction, and temperature variation patterns, to provide a basis for subsequent design and construction. Material and equipment procurement: Based on the design requirements, purchase materials and equipment that meet the specifications, such as fill, reinforcement 5, prefabricated modular wall 6, circulation pipeline 8, circulation pipeline 9, heat pump main unit 10, fan coil 13, solar power generation device 14, wind power generation device 15, power supply device 16, strain gauge 17, temperature sensor 18, inclinometer 19 and low-power wireless transmission module. 2. Construction of reinforced earth abutment Modular wall unit prefabrication: Modular wall units are manufactured to design dimensions and specifications at a factory or prefabrication site near the construction site. During the prefabrication process, the dimensional accuracy of the wall units is strictly controlled to ensure accuracy and stability during subsequent assembly. Foundation construction: After leveling the site, carry out foundation 7 construction to ensure that the bearing capacity of foundation 7 meets the design requirements. Abutment Construction: Starting from foundation 7, prefabricated modular wall units 6 are installed upwards on the foundation surface. Fill soil is then laid layer by layer. Simultaneously, reinforcement 5 is installed and securely connected to the prefabricated modular wall units 6 to form a stable reinforced soil structure. During assembly, ensure that the reinforcement 5 is securely connected and that each layer of fill soil meets the required compaction standards. Construction of pedestals and reinforced earth approach: Level the fill surface of the reinforced earth abutment system, place pedestals 4 on the abutments, and then construct reinforced earth approach 3 behind pedestals 4, ensuring that the height after compaction is consistent with the top of pedestals 4; continue construction of reinforced earth approach 3 until the design height is reached.

[0028] Construction of bridge superstructure and pavement structure: Place the bridge superstructure 2 on the other side of the pedestal 4. After the deformation stabilizes, lay the pavement structure 1 to complete the construction.

[0029] 3. Installation of ground source heat pump control system Vertical underground pipe group construction: Based on the survey results, specialized drilling equipment is used to drill holes to the designed depth. The drilling depth must be precisely controlled to ensure penetration through the active permafrost layer to the stable stratum. Once the holes are drilled, the vertical underground pipes are installed. Circulation pipeline layout: In the stable soil layer, the pipeline is laid vertically with a horizontal spacing of 300 to 600 mm; inside the abutment system, the pipeline adopts an S-shaped layout, starting from the vertical pipeline interface of the stable soil layer, extending upward in an S-shaped curve, and placed in the middle of the two layers of reinforcement.

[0030] Heat pump unit and fan coil installation: Install the heat pump unit 10 in the appropriate location and connect the dual-circulation piping, ensuring it is properly sealed to prevent leaks. Simultaneously, install the fan coil 13 and connect it to the heat pump unit 10 and the vertical buried pipes to form a complete ground-source heat pump control system. The evaporator 11 and condenser 12 are key components of the heat pump unit 10, working together to exchange heat. 4. Construction of Clean Energy Power Supply System Installation of the wind-solar hybrid power generation device: Based on local terrain and meteorological conditions, determine the appropriate installation location and angle for the solar generator 14 and vertical-axis wind turbine 15 to optimize wind and solar energy utilization. Securely install the solar generator 14 and wind turbine 15, and connect the circuits to the wind-solar hybrid controller 20. Energy storage module installation: Install the energy storage module consisting of a battery 21 adapted to low-temperature environments and a supercapacitor in a suitable location, connect it to the lines of the wind-solar complementary power generation device and electrical equipment to ensure stable storage and supply of energy. The inverter 22 is used to convert the stored DC power into AC power for equipment use. V. Monitoring System Deployment Sensor installation: Temperature sensor arrays 18 are installed at key locations of the reinforced earth abutment, such as the abutment base, permafrost activity areas, and reinforcement 5 connections. Strain gauges 17 are installed during reinforcement laying. Inclinometers 19 are installed on the panels after the reinforced earth abutment construction is completed to ensure accurate sensor installation positions and effective data collection.

[0031] This embodiment provides a reinforced earth abutment system in permafrost areas based on the coordinated regulation of ground-source heat pumps and clean energy, including a reinforced earth abutment body, a ground-source heat pump regulation system, a clean energy power supply system, and a monitoring system. The reinforced earth abutment body includes backfill, geosynthetic reinforcement arranged in layers with a vertical spacing of ≤0.3m, and a prefabricated modular wall. The reinforced earth structure directly supports the load of the bridge superstructure, solving the problem of differential settlement in the road-bridge transition section. The vertical buried pipe group of the ground-source heat pump regulation system penetrates the permafrost active layer to the stable stratum. The heat pump main unit uses a double-circulation pipeline, relies on temperature sensor data and weather forecasts, transfers heat from the abutment base to prevent permafrost melting in high-temperature seasons, and reversely supplements heat to suppress frost heave in low-temperature seasons. In the clean energy power supply system, wind power generation devices are given priority in high wind speeds in low-temperature seasons, solar power generation devices are directly supplied with energy storage and energy backup in high-temperature seasons, and the heat pump main unit and monitoring system provide time-sharing power supply to ensure core functions. The monitoring system, which includes temperature sensors, strain gauges, and inclinometers and is powered by clean energy, monitors abutment structural data in real time. Through remote wireless transmission and analysis, it dynamically adjusts system parameters. This system effectively addresses the challenges of abutment stability and frost heave and thaw settlement in permafrost regions, delivering both economic and social benefits. It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A reinforced earth abutment system in permafrost areas based on coordinated regulation of ground source heat pumps and clean energy, characterized in that: Including reinforced earth abutment body, ground source heat pump control system, clean energy power supply system, and monitoring system; The reinforced earth abutment body includes a pavement structure, a bridge superstructure, a reinforced earth approach, a pedestal, fill, reinforcement and a prefabricated modular wall. The pavement structure is arranged on top of the bridge superstructure and the reinforced earth approach. The bridge superstructure and the reinforced earth approach are arranged in parallel. The bottoms of the bridge superstructure and the reinforced earth approach are both overlapped on the pedestal. The pedestal and the reinforced earth approach are both arranged on top of the reinforced earth abutment system. The ground source heat pump control system includes an underground circulation pipe group, a heat pump host and a fan coil unit. The underground circulation pipe group includes a hot circulation pipeline and a cold circulation pipeline. An evaporator and a condenser are provided in the heat pump host. The evaporator and the condenser are respectively connected to the fan coil unit. The buried circulation pipe group is buried deep enough to penetrate the frozen soil layer to the stable soil layer. The heat pump host realizes heat exchange through the hot circulation pipeline and the cold circulation pipeline. The clean energy power supply system includes a solar power generation device, a wind power generation device, a power supply device, a wind-solar hybrid controller, a battery and an inverter; The monitoring system includes a strain gauge, a temperature sensor and an inclinometer. The strain gauge is used to monitor the strain of the reinforced earth abutment in real time, the inclinometer is used to monitor the inclination angle of the reinforced earth abutment in real time, and the temperature sensor is used to monitor the temperature of the abutment base and the temperature of the frozen soil around the abutment base in real time.

2. The reinforced earth abutment system in permafrost areas based on coordinated regulation of ground source heat pumps and clean energy according to claim 1 is characterized in that: The reinforcement material includes geosynthetic reinforcement material, and the geosynthetic reinforcement material adopts geogrid or geotextile arranged in layers.

3. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 2 is characterized in that: In the layered structure of the geosynthetics reinforcement, the vertical spacing between each layer is less than or equal to 0.3m.

4. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 3 is characterized in that: The heat circulation pipeline adopts polyethylene tube or polybutylene tube, and the cold circulation pipeline adopts polyethylene tube or polybutylene tube, and the diameter of the polyethylene tube or the polybutylene tube is 100mm-200mm.

5. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 4 is characterized in that: The heat circulation pipeline and the cold circulation pipeline are arranged in parallel, and the effective influence radius of the heat circulation pipeline and the cold circulation pipeline centered on a single circulation pipeline is twice the diameter of the pipeline.

6. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 5 is characterized in that: In the stabilized soil layer, the heat circulation pipeline and the cold circulation pipeline are arranged vertically with a horizontal spacing of 300mm-600mm; inside the abutment system, the heat circulation pipeline and the cold circulation pipeline are arranged in an S-shaped manner, starting from the vertical pipeline interface of the stabilized soil layer, set in the middle position of the two layers of reinforcement, and extending upward in an S-shaped curve.

7. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 6 is characterized in that: The ground source heat pump control system is used to adjust the power of the heat pump host according to the temperature data collected by the temperature sensor and weather forecast information.

8. The reinforced earth abutment system in permafrost regions based on coordinated regulation of ground source heat pumps and clean energy according to claim 7 is characterized in that: The ground source heat pump control system is used to transfer the heat of the abutment base to the stable soil layer when the air temperature is greater than or equal to the preset value in the high temperature season, so as to prevent the frozen soil layer from melting; the ground source heat pump control system is used to transfer the heat of the stable soil layer to the abutment base when the air temperature is less than or equal to the preset value in the low temperature season, so as to suppress the frost heave of the frozen soil layer.

9. A construction method for a reinforced earth abutment system in a frozen soil region based on coordinated regulation of a ground source heat pump and clean energy according to any one of claims 1 to 8, characterized in that: include: Step S1: Leveling the site, conducting a geological survey of the site, obtaining geological data of the site, and transporting construction materials and equipment to a preset location; Step S2: making prefabricated modular walls according to preset dimensions; Step S3: Install the prefabricated modular wall panels on the foundation surface in sequence. Step S4: After the installation of each layer of the prefabricated modular wall is completed, an inclinometer and reinforcement are installed, and the reinforcement is firmly connected to the prefabricated modular wall to form a reinforced soil structure; Step S5: Fill soil that meets the preset standards is selected and compacted in layers, and strain gauges and temperature sensors are installed simultaneously. The temperature sensors are set at the connection between the abutment base and the reinforcement and at the connection between the frozen soil layer and the reinforcement; Step S6: Drill holes from the frozen soil layer to the stable soil layer, insert the underground circulation pipe group, install the heat pump host and fan coil, and connect the hot circulation pipe and the cold circulation pipe; Step S7: Determine the installation position and installation angle of the solar power generation device and the wind power generation device according to local terrain and meteorological conditions, fix the solar power generation device and the wind turbine generator according to the installation position and the installation angle, and connect the solar power generation device and the wind turbine generator to a wind-solar hybrid controller respectively; Step S8: Leveling the fill surface, placing a pedestal on the abutment, and constructing a reinforced earth approach behind the pedestal until the height of the reinforced earth approach is consistent with the top of the pedestal; Step S9: The bridge superstructure is arranged on the other side of the pedestal, and after the deformation is stabilized, a pavement structure is laid on the bridge superstructure.

10. The construction method of the reinforced earth abutment system in frozen soil areas based on the coordinated regulation of ground source heat pumps and clean energy according to claim 9, characterized in that: The geological data of the site include the thickness of the permafrost layer, the depth of the stabilized soil layer, and the thermal conductivity of the soil.

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