Thermal-mechanical early warning device for energy pile of energy subway station
By installing sensor components and data acquisition systems in the energy piles of energy subway stations, combined with early warning control systems, real-time monitoring and analysis of thermal stress data, the problem of monitoring and early warning reliability of underground structures of energy subway stations under the influence of thermal stress is solved, and accurate early warning of energy underground structure groups is achieved.
Patent Information
- Application Number
- CN202510811026.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-17
- Publication Date
- 2025-09-12
AI Technical Summary
In the existing technology, the structural safety monitoring and early warning of the underground structure of energy subway stations under the influence of thermal stress are insufficiently reliable, especially the lack of research on the thermal-stress interaction between energy underground structure groups, resulting in large differences between simulated early warning results and on-site measured data.
Install sensor components and data acquisition systems in the energy piles of energy subway stations. Combined with the early warning control system, they can monitor and analyze thermal stress data in real time, generate early warning signals, and improve monitoring accuracy and reliability.
By accurately monitoring and analyzing the impact of thermal stress, effective early warning of thermal stress on the stress distribution of the original underground structure of the energy subway station tunnel can be obtained, thereby improving the reliability of early warning and ensuring structural stability.
Smart Images
Figure CN120628200A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of subway engineering, and in particular to a thermo-dynamic early warning device for an energy pile in an energy subway station. Background Art
[0002] Energy-efficient metro stations utilize a variety of energy-saving technologies and renewable energy sources, effectively improving energy efficiency, reducing carbon emissions, and building a green and economical urban rail transit system. During the operation of energy-efficient metro stations, the heat transferred from the heat exchange tubes to the energy piles generates thermal stress, disrupting the existing stress distribution in the underground structure.
[0003] In the existing technology, the structural safety of underground energy structures under the influence of thermal stress is usually based on computer numerical simulation. Computer simulation usually makes a lot of simplifications and some assumptions on boundary conditions. The simulation warning results will be greatly different from the actual measured data on site.
[0004] At the same time, because field testing of underground energy structures is still primarily in the research phase, it typically focuses on a single energy structure, such as a single energy pile. The primary research method involves installing sensors within a single energy structure (energy pile), making it impossible to study the thermal-stress interactions between a group of underground energy structures.
[0005] Therefore, how to effectively improve the reliability of thermo-mechanical monitoring and early warning of underground structures of energy subway stations and ensure the stability of stress distribution of underground structures has become an urgent problem to be solved in this field. Summary of the Invention
[0006] In view of the defects of the prior art, the purpose of the present invention is to provide a thermo-dynamic early warning device for monitoring and warning reliable energy subway station energy piles.
[0007] In order to achieve the above-mentioned objectives, the present invention provides a thermo-mechanical early warning device for energy piles in energy subway stations, which is used to cooperate with energy columns in energy subway station tunnels. The device includes a sensor component, a data acquisition system, and an early warning control system. The sensor components are distributed at the structural node constraints of each energy pile, and corresponding to the distribution position of each energy pile in the energy subway station tunnel, a first sensor component distribution structure and a second sensor component distribution structure are formed respectively. The sensor components are configured to monitor the thermal stress data at the structural node constraints. The data acquisition system is configured to collect the thermal stress data in real time and transmit it to the early warning control system. The early warning control system is configured to analyze and process the thermal stress data to generate an early warning signal.
[0008] Furthermore, the energy subway station tunnel includes a foundation pit standard section and a shield tunnel exit section, and a number of standard section energy columns and exit section energy columns are distributed in the foundation pit standard section and the shield tunnel exit section respectively.
[0009] Furthermore, the structural node constraints of the standard section energy column and the exit section energy column respectively include the connection between the upper plate and the side wall and the pile body, the connection between the middle plate and the side wall and the pile body, the connection between the bottom plate and the side wall and the pile body, and the constraint between the pile bottom and the soil.
[0010] Furthermore, the sensing component includes a stress sensor and a temperature sensor. For the standard section energy column, two vertically distributed stress sensors and two horizontally distributed temperature sensors are respectively provided at the connection between the upper plate and the side wall and the pile body, and at the constraint between the pile bottom and the soil body. A stress sensor and a temperature sensor are respectively provided at the connection between the middle plate and the side wall and the pile body, and at the connection between the bottom plate and the side wall and the pile body.
[0011] Furthermore, for the energy column in the exit section, a stress sensor and two horizontally distributed temperature sensors are respectively provided at the connection between the upper plate and the side wall and the pile body, and at the constraint between the pile bottom and the soil body. Three vertically distributed stress sensors and one temperature sensor are provided at the connection between the middle plate and the side wall and the pile body. A stress sensor and a temperature sensor are provided at the connection between the bottom plate and the side wall and the pile body.
[0012] Furthermore, the data acquisition system includes a strain collector and a temperature collector. The data acquisition system is respectively configured with two strain collectors and two temperature collectors corresponding to each standard section energy column and each exit section energy column.
[0013] Furthermore, the sensing component is connected to the data acquisition system via a shielded signal line, and the data acquisition system is connected to the early warning control system via wireless and / or wired connections.
[0014] Furthermore, several standard section energy columns corresponding to the side pile area in the standard section of the foundation pit are concentrated and distributed in parallel, and several exit section energy columns corresponding to the exit area in the shield exit section are concentrated and distributed in parallel. The standard section energy columns and exit section energy columns in the remaining distribution positions are distributed at intervals, and each standard section energy column and exit section energy column constitutes a distribution area respectively.
[0015] Furthermore, the early warning control system is provided with a controller corresponding to each distribution area in the side pile area, the exit area and the remaining distribution positions.
[0016] The thermo-mechanical early warning device for energy piles in energy subway stations provided by the present invention monitors the thermal stress data at the constraints of each structural node of the energy piles through sensor components, and forms different sensor component distribution structures corresponding to the energy piles distributed at different positions in the energy subway station tunnel, so as to monitor the influence of thermal stress on the constraints of each structural node of the energy piles at different distribution positions, thereby improving the monitoring accuracy and reliability, and can effectively warn of the influence of thermal stress on the stress distribution of the original underground structure of the energy subway station tunnel, thereby improving the early warning reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention is further described below with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is a system block diagram of the thermo-dynamic early warning device for the energy pile of the energy subway station in the present invention;
[0019] Figure 2 This is a schematic diagram of the coordination between the standard section energy column and the sensor assembly in the present invention;
[0020] Figure 3 Schematic diagram of the coordination between the energy column and the sensor assembly at the exit section of the present invention;
[0021] Figure 4 It is a distribution diagram of the early warning control system in the present invention.
[0022] Reference numerals:
[0023] 1. Sensing component; 11. Stress sensor; 12. Temperature sensor;
[0024] 2. Data acquisition system; 21. Stress collector; 22. Temperature collector;
[0025] 3. Early warning control system; 31. First controller; 32. Second controller;
[0026] 4. Energy column; 41. Standard section energy column; 42. Exit section energy column;
[0027] 5. Standard section of foundation pit; 51. Side pile area; 6. Shield tunnel exit section; 61. Exit area; 7. Pile connection; 8. Connection between middle plate, side wall and pile; 9. Connection between bottom plate, side wall and pile; 10. Constraint between pile bottom and soil. DETAILED DESCRIPTION
[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.
[0029] See also Figure 1, which shows an example of the thermo-dynamic early warning device for the energy pile of the energy subway station provided by the present invention.
[0030] As can be seen from the figure, the thermo-mechanical early warning device of the energy pile of the energy subway station in this example cooperates with the energy column in the tunnel of the energy subway station, and mainly includes a sensor component 1, a data acquisition system 2 and an early warning control system 3.
[0031] The sensor components 1 are distributed at the structural node constraints of each energy pile 4, and correspond to the distribution positions of each energy pile 4 in the energy subway station tunnel, forming a first sensor component distribution structure and a second sensor component distribution structure respectively. The sensor components 1 are configured to monitor the thermal stress data at the structural node constraints; the data acquisition system 2 is configured to collect thermal stress data in real time and transmit it to the early warning control system 3; the early warning control system 3 is configured to analyze and process the thermal stress data and generate early warning signals, thereby monitoring the impact of thermal stress on the structural node constraints of energy piles at different distribution positions, thereby improving the monitoring and early warning accuracy and reliability.
[0032] Combine Figure 2 and Figure 3 The energy subway station tunnel includes a foundation pit standard section 5 and a shield tunnel exit section 6. The foundation pit standard section 5 is distributed in the energy subway station tunnel, and the shield tunnel exit section 6 is distributed at the transition connection between the energy subway station platform and the energy subway station tunnel. The energy piles 4 include several standard section energy columns 41 and exit section energy columns 42 distributed in the foundation pit standard section 5 and the shield tunnel exit section 6 respectively. Due to the different structural characteristics and distribution positions of the foundation pit standard section 5 and the shield tunnel exit section 6, the impact of thermal stress on the standard section energy columns 41 and the exit section energy columns 42 is also different.
[0033] As an example, the thermal stress on the standard section energy column 41 mainly affects the most unfavorable position of the thermal stress inside the energy subway station structure, while the thermal stress on the exit section energy column 42 mainly affects the most unfavorable position of the thermal stress at the connection between the energy subway station platform and the energy subway station tunnel.
[0034] Therefore, the sensor component 1 corresponds to the distribution positions of the standard section energy column 41 and the exit section energy column 42, forming a first sensor component distribution structure and a second sensor component distribution structure respectively, so as to monitor the thermal stress data of the standard section energy column 41 and the exit section energy column 42 corresponding to different distribution positions in real time, thereby improving the monitoring accuracy and reliability.
[0035] Furthermore, during the operation phase of the energy subway station, the temperature in the heat exchange tube is transferred to the energy column 1, which will generate thermal stress. The thermal stress mainly affects the structural node constraints of the energy column 1. The damage to the structural node constraints will destroy the original underground structural stress distribution of the energy subway station tunnel.
[0036] In order to improve the reliability of monitoring and early warning, the first sensor component distribution structure and the second sensor component distribution structure of the sensor component 1 mainly correspond to the distribution positions of the standard section energy column 41 and the exit section energy column 42, and are respectively distributed at the structural node constraints of the standard section energy column 41 and the exit section energy column 42.
[0037] Specifically, the structural node constraints of the standard section energy column 41 and the exit section energy column 42 include the connection between the upper plate and the side wall and the pile body 7, the connection between the middle plate and the side wall and the pile body 8, the connection between the bottom plate and the side wall and the pile body 9, and the constraint between the pile bottom and the soil 10, so that the sensor component 1 distributes sensors corresponding to the structural node constraints of the standard section energy column 41 and the exit section energy column 42 respectively.
[0038] Combine Figure 2 In conjunction with it, the sensing component 1 includes a stress sensor 11 and a temperature sensor 12. For the standard section energy column 41, two vertically distributed stress sensors 11 and two horizontally distributed temperature sensors 12 are respectively provided at the connection 7 between the upper plate and the side wall and the pile body and the constraint 10 between the pile bottom and the soil body. A stress sensor 11 and a temperature sensor 12 are respectively provided at the connection 8 between the middle plate and the side wall and the pile body and the connection 9 between the bottom plate and the side wall and the pile body to form a first sensing component distribution structure.
[0039] Combine Figure 3 Correspondingly, for the energy column 42 at the exit section, a stress sensor 11 and two horizontally distributed temperature sensors 12 are respectively provided at the connection point 7 between the upper plate, the side wall and the pile body, and the constraint point 10 between the pile bottom and the soil body. Three vertically distributed stress sensors 11 and one temperature sensor 12 are provided at the connection point 8 between the middle plate, the side wall and the pile body. A stress sensor 11 and one temperature sensor 12 are provided at the connection point 9 between the bottom plate, the side wall and the pile body, so as to form a second sensor component distribution structure.
[0040] In this way, the sensor component 1 corresponds to several standard section energy columns 41 and exit section energy columns 42 distributed in the foundation pit standard section 5 and the shield exit section 6, forming a first sensor component distribution structure and a second sensor component distribution structure respectively. The stress sensor 11 and the temperature sensor 12 form different distribution quantities and forms at each structural node constraint of the standard section energy column 41 and the exit section energy column 42, respectively, to monitor the stress data and temperature data at each structural node constraint of the standard section energy column 41 and the exit section energy column 42.
[0041] Here, the distribution quantity and form of stress sensors 11 and temperature sensors 12 at the structural node constraints of the standard section energy column 41 and the exit section energy column 42 can be adaptively adjusted according to the pile height, energy subway station structure, etc.
[0042] As an example, in this example, 6 stress sensors 11 and 6 temperature sensors 12 are distributed on each standard section energy column 41 and the exit section energy column 42. These stress sensors 11 and temperature sensors 12 cooperate to monitor the 6-point strain data and 6-point temperature data on each standard section energy column 41 and the exit section energy column 42 in real time, thereby obtaining thermal stress data, which can effectively reflect the impact of thermal stress on the constraints of each structural node of the energy pile 1 at different positions.
[0043] Combine Figure 1 In order to collect thermal stress data, the sensing component 1 and the data acquisition system 2 are connected through a shielded signal line. The shielded signal line can effectively block external interference signals from entering the cable, ensuring the stability and accuracy of data transmission between the sensing component 1 and the data acquisition system 2.
[0044] Furthermore, the data acquisition system 2 includes a strain collector 21 and a temperature collector 22. Preferably, in order to ensure the independence of data transmission on each energy column 4 and not be interfered with by the data of other energy piles 1, the data acquisition system 2 is respectively configured with two 4-channel strain collectors 11 and two 4-channel temperature collectors 22 corresponding to each energy column 4, so that each energy column 4 can collect the strain data and temperature data respectively monitored by the stress sensor 11 and the temperature sensor 12 at each structural node constraint on the corresponding energy column 4 through the corresponding strain collector 21 and temperature collector 22.
[0045] In this way, the data acquisition system 2 can stably collect the thermal stress data of each structural node constraint on each energy column 4 and transmit it to the early warning control system 3, so that the early warning control system 3 can analyze and process the thermal stress data on each energy column 4 and generate an early warning signal.
[0046] Combine Figure 1 Here, the data acquisition system 2 and the early warning control system 3 are connected wirelessly and / or wired. As an example, in this example, the data acquisition system 2 and the early warning control system 3 are connected via 4G, which reduces the cable distribution in the energy subway station tunnel and ensures the stability of data transmission.
[0047] In order to ensure that the signal range of the early warning control system 3 can meet the data transmission range of the data acquisition system 2 on the energy column 1, the energy column 1 forms multiple distribution areas in the energy subway station tunnel, and the distribution structure of the energy column 1 in each distribution area is different. In coordination with this, the early warning control system 3 corresponds to the distribution area of the energy column 1 in the energy subway station tunnel, and is respectively provided with several controllers, so that each controller cooperates with the data acquisition system 2 corresponding to the distribution area of the energy column 1 to receive the thermal stress data transmitted by the data acquisition system 2 of the distribution area.
[0048] Combine Figure 4As an example, several standard section energy columns 41 corresponding to the side pile area 51 in the standard section 5 of the foundation pit are concentrated and distributed in parallel (in this example, three standard section energy columns 41 are concentrated and distributed in parallel corresponding to the side pile area 51), and several exit section energy columns 42 corresponding to the exit area 61 in the shield exit section 6 are concentrated and distributed in parallel (in this example, four exit section energy columns 42 are concentrated and distributed in parallel corresponding to the exit area 61). The standard section energy columns 41 and exit section energy columns 42 at other distribution positions are distributed at intervals, and each standard section energy column 41 and exit section energy column 42 constitutes a distribution area respectively.
[0049] In coordination with this, the early warning control system 3 is provided with a first controller 31 corresponding to the edge pile area 51, so that the first controller 31 can cooperate with the data acquisition systems 2 on several standard section energy columns 41 in the edge pile area 51 to receive the thermal stress data transmitted by all data acquisition systems 2 in the edge pile area 51.
[0050] Furthermore, the early warning control system 3 is provided with a second controller 32 corresponding to the exit area 61, so that the second controller 32 can cooperate with the data acquisition systems 2 on several exit section energy columns 42 in the exit area 61 to receive thermal stress data transmitted by all data acquisition systems 2 in the exit area 61.
[0051] Correspondingly, since each standard section energy column 41 and exit section energy column 42 in the remaining distribution positions constitutes a distribution area respectively, the early warning control system 3 is provided with a controller corresponding to the distribution area of each standard section energy column 41 and exit section energy column 42 in the remaining distribution positions, so that the controller cooperates with the data acquisition system 2 on each standard section energy column 41 and exit section energy column 42 in the remaining distribution positions to receive the thermal stress data of the corresponding standard section energy column 41 and exit section energy column 42.
[0052] In this way, through the multiple distribution areas formed by the energy column 1 in the energy subway station tunnel, in cooperation with several controllers of the early warning control system 3, it can ensure that the early warning control system 3 meets the transmission range of the data acquisition system 2 in each distribution area, while minimizing the number of controllers and ensuring the reliability of data transmission.
[0053] Furthermore, the early warning control system 3 can analyze and process the thermal stress data on each energy column 4 to generate an early warning signal.
[0054] Specifically, since the energy column 4 serves as the underground heat exchanger of the ground source heat pump system in the energy subway station tunnel, and bears the upper structure load and periodic temperature changes (cooling / heating cycle) at the same time, the early warning control system 3 mainly calculates the thermal expansion and contraction deformation and constraint stress of the pile body and surrounding soil at the corresponding structural node constraint on each energy column 4 due to temperature cycle through the stress data and temperature data at each structural node constraint of each energy column 4, and evaluates the potential risks of temperature gradient, structural integrity, bearing capacity and long-term durability of the energy column 4 based on the thermal expansion and contraction deformation and constraint stress.
[0055] Furthermore, the early warning control system 3 is provided with a first-level early warning module 31, a second-level early warning module 32 and a third-level early warning module 33, and trigger indicators corresponding to the first-level early warning module 31, the second-level early warning module 32 and the third-level early warning module 33 are provided respectively.
[0056] Combine Figure 1 As shown in Table 1 below, for the first-level early warning module 31, the early warning control system 3 calculates the local temperature difference and thermal strain based on the temperature data and stress data at the constraints of each structural node of each energy column 4, and presets a temperature difference threshold and a concrete cracking strain threshold. In this example, the concrete cracking strain threshold is configured to 200με, where the local temperature difference is the difference between two temperature data at the constraints of each structural node of each energy column 4, and the thermal strain can be calculated using the temperature data and stress number through the thermal strain formula. This calculation method is a conventional technical means in this field and will not be elaborated here.
[0057] If the local temperature difference ΔT> 15 °C or reaches 70% of the temperature difference threshold, or / and, if the thermal strain reaches 75% of the concrete cracking strain threshold, in this example, ε thermal >150με, the early warning control system 3 triggers the first-level early warning module 31 and generates a first-level early warning signal, indicating that there is a potential risk of temperature gradient exceeding the limit or / and microcrack initiation risk at the structural node constraint corresponding to the energy column 4.
[0058] For the secondary warning module 32, the warning control system 3 calculates the interface shear stress based on the temperature data and stress data at the constraints of each structural node of each energy column 4, and presets the peak shear strength of the soil. Among them, the interface shear stress can be calculated by inputting temperature data and stress number into the interface shear stress model. This calculation method is a conventional technical means in this field and will not be elaborated here.
[0059] If the interface shear stress is greater than 0.5 times the peak shear strength of the soil, the early warning control system 3 triggers the secondary early warning module 32 and generates a secondary early warning signal, indicating that there is a pile-soil slip risk at the corresponding structural node constraint of the energy column 4.
[0060] Furthermore, for the third-level early warning module 33, the early warning control system 3 calculates the cumulative fatigue damage and frost heave stress based on the temperature data and stress data at the constraints of each structural node of each energy column 4, and presets a cumulative fatigue damage threshold and a concrete tensile strength threshold. As an example, the cumulative fatigue damage threshold is Df = ∑ni / Ni. When the cumulative fatigue damage threshold reaches 1, it means that the energy pile 4 structure has failed. In this example, the concrete tensile strength threshold is configured to be 3MPa. Among them, the cumulative fatigue damage can be calculated by inputting temperature data and stress numbers into the cumulative fatigue damage model, and the frost heave stress can be calculated by inputting temperature data and stress numbers into the frost heave stress model. This calculation method is a conventional technical means in this field and will not be elaborated here.
[0061] If the cumulative fatigue damage f >0.8, or / and the frost heave stress σfrost>2MPa, the early warning control system 3 triggers the third-level early warning module 33 and generates a third-level early warning signal, indicating that the energy column 4 has a risk of nearing the end of its structural life or / and a risk of circumferential cracking of the pile body at the corresponding structural node constraint.
[0062] In this way, the early warning control system 3 evaluates the potential risks of temperature gradient, structural integrity, bearing capacity and long-term durability at the corresponding locations based on the temperature data and stress data at the constraints of each structural node of each energy column 4, and forms a first-level early warning module, a second-level early warning module and a third-level early warning module respectively, so as to predict potential unfavorable locations in the underground structure group and issue early warnings.
[0063] Table 1 Schematic diagram of the working of each warning module of the early warning control system 3
[0064]
[0065] The thermo-mechanical early warning device for the energy piles of the energy subway station thus constructed monitors the thermal stress data at the constraints of each structural node of the energy pile 41 through the sensor component 1, and forms different sensor component distribution structures corresponding to the energy piles distributed at different positions in the energy subway station tunnel, so as to monitor the influence of thermal stress on the constraints of each structural node of the energy piles at different distribution positions, thereby improving the monitoring accuracy and reliability, and can effectively warn of the influence of thermal stress on the stress distribution of the original underground structure of the energy subway station tunnel, thereby improving the early warning reliability.
[0066] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A thermo-mechanical early warning device for energy piles in energy subway stations, used to cooperate with energy columns in energy subway station tunnels, characterized in that: The system comprises a sensing component, a data acquisition system and an early warning control system. The sensing components are distributed at the structural node constraints of each energy pile, and correspond to the distribution positions of each energy pile in the energy subway station tunnel, forming a first sensing component distribution structure and a second sensing component distribution structure respectively. The sensing components are configured to monitor the thermal stress data at the structural node constraints. The data acquisition system is configured to collect the thermal stress data in real time and transmit it to the early warning control system. The early warning control system is configured to analyze and process the thermal stress data to generate an early warning signal.
2. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 1 is characterized in that: The energy subway station tunnel includes a foundation pit standard section and a shield tunnel exit section, wherein a plurality of standard section energy columns and tunnel exit section energy columns are distributed in the foundation pit standard section and the shield tunnel exit section respectively.
3. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 2, characterized in that: The structural node constraints of the standard section energy column and the exit section energy column respectively include the connection between the upper plate and the side wall and the pile body, the connection between the middle plate and the side wall and the pile body, the connection between the bottom plate and the side wall and the pile body, and the constraint between the pile bottom and the soil.
4. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 3, characterized in that: The sensing assembly includes a stress sensor and a temperature sensor. For the standard section energy column, two vertically distributed stress sensors and two horizontally distributed temperature sensors are respectively provided at the connection between the upper plate and the side wall and the pile body, and at the constraint between the pile bottom and the soil body. A stress sensor and a temperature sensor are respectively provided at the connection between the middle plate and the side wall and the pile body, and at the connection between the bottom plate and the side wall and the pile body.
5. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 4, characterized in that: For the energy column in the exit section, a stress sensor and two horizontally distributed temperature sensors are respectively provided at the connection between the upper plate and the side wall and the pile body, and at the constraint between the pile bottom and the soil body. Three vertically distributed stress sensors and one temperature sensor are provided at the connection between the middle plate and the side wall and the pile body. A stress sensor and a temperature sensor are provided at the connection between the bottom plate and the side wall and the pile body.
6. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 5, characterized in that: The data acquisition system includes a strain collector and a temperature collector. The data acquisition system is respectively configured with two strain collectors and two temperature collectors corresponding to each standard section energy column and each exit section energy column.
7. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 6, characterized in that: The sensing component is connected to the data acquisition system via a shielded signal line, and the data acquisition system is connected to the early warning control system via wireless and / or wired connections.
8. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 2 or 6, characterized in that: Several standard section energy columns corresponding to the side pile area in the standard section of the foundation pit are concentrated and distributed in parallel, and several exit section energy columns corresponding to the exit area in the shield exit section are concentrated and distributed in parallel. The standard section energy columns and exit section energy columns in the remaining distribution positions are distributed at intervals, and each standard section energy column and exit section energy column constitutes a distribution area respectively.
9. The thermo-dynamic early warning device for energy piles in energy subway stations according to claim 8, characterized in that: The early warning control system is respectively provided with a controller corresponding to the edge pile area, the exit area and each distribution area in the remaining distribution positions.