Model experiment device for fully-prefabricated underground diaphragm wall construction simulation
Through the model experimental device for the construction simulation of fully prefabricated underground continuous wall, the construction process is simulated and deformation and pressure changes are monitored in real time, which solves the problem of difficult to assess potential risks in construction, improves construction safety and optimizes the construction plan.
Patent Information
- Application Number
- CN202421520432.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the construction of fully prefabricated underground continuous walls, there are problems that potential risks during the construction process are difficult to assess and predict, resulting in insufficient construction safety.
It provides a model experimental device for the construction simulation of fully prefabricated underground continuous walls, including a model box system, a loading system and a data acquisition and processing system, which is used to simulate the construction process, monitor the deformation of the continuous wall model and the pressure changes of the soil in real time, and evaluate and predict potential risks in construction.
By simulating the construction process, it is possible to predict and evaluate possible problems in actual construction, provide support for optimizing the construction plan, and reduce safety risks during the construction process.
Smart Images
Figure CN222862375U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground engineering, in particular to a model experimental device for simulating the construction of a fully prefabricated underground continuous wall. Background Art
[0002] With the rapid development of my country's economy, the pace of urbanization is accelerating, people's demands for convenient transportation, housing improvement and space development are growing, high-rise buildings are gradually becoming the mainstream of society, and urban construction has an increasing demand for underground space. The excavation depth of foundation pits is gradually deepening, and the excavation area is constantly increasing. Under poor geological conditions and high environmental protection requirements, the design and construction of foundation pit excavation have encountered great difficulties.
[0003] As a multifunctional foundation pit support structure, cast-in-place underground continuous wall has a wide range of applications and can be applied to most strata. It produces less vibration or noise during construction, has high rigidity, good water-stopping effect, higher bearing capacity, and less impact on the surrounding foundation pit. However, the construction technology of cast-in-place underground continuous wall is relatively complex, the quality of joints is difficult to control, and the excavation surface wall will have bulges, slag, exposed reinforcement, etc., which makes it difficult to handle in the later stage of construction. A large amount of mud is used during the construction process, which causes great pollution to the environment.
[0004] Prefabricated underground continuous walls are prefabricated in factories and hoisted and assembled at the construction site. They not only fully inherit the advantages of traditional cast-in-place underground continuous walls, but also facilitate large-scale production in factories. The quality of concrete is guaranteed, and the engineering problems of cast-in-place underground continuous walls such as irregular mud inclusions and leakage are solved. They can effectively shorten the construction period and save engineering costs. However, the application of fully prefabricated underground continuous wall technology is not yet fully mature, and there are still unknown problems in actual construction. In order to improve the safety of fully prefabricated underground continuous wall projects, it is necessary to conduct simulation tests of fully prefabricated underground continuous wall construction before the project is carried out, monitor the deformation of the model and soil in real time, predict and evaluate the problems that may arise in actual construction through data analysis, provide corresponding solutions for the actual project, give full play to the advantages of underground continuous walls, and achieve the expected results. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a model experimental device for simulating the construction of a fully prefabricated underground continuous wall, which can be used to simulate the entire construction process of the installation of the fully prefabricated underground continuous wall, analyze the strain state of the underground continuous wall and the change of soil pressure during the construction of the fully prefabricated underground continuous wall, evaluate and predict the potential risks in the construction process, propose corresponding preventive measures and response strategies, and reduce the safety risks in the construction process.
[0006] The technical solution of the utility model is as follows:
[0007] The utility model provides a model experimental device for fully prefabricated underground continuous wall construction simulation, comprising: a model box system, a loading system and a data acquisition and processing system;
[0008] The model box system comprises a rectangular steel model box, which has an upward opening, and comprises steel enclosures at the front, back, left and right sides which are welded as a whole, a steel bottom plate at the bottom, a groove in the middle of the bottom plate with a rubber pad embedded therein, which can be detachably integrated with the enclosure, and four welding bolts on each side of the bottom plate, which can be connected with the support column through the support column foot with nuts to form a whole;
[0009] The loading system includes a guide rail, a sliding device and a loading device. The loading device is composed of a hydraulic jack, a pressure sensor, a distribution plate, a loading plate and a controller. The loading load is accurately controlled by the controller. The loading device is connected to the sliding device and moves left and right through the guide rail with the help of the sliding device, so as to load at different positions.
[0010] The data acquisition and processing system comprises a continuous wall model deformation data acquisition device, a soil pressure change data acquisition device, a data processor and a computer. The continuous wall model deformation data acquisition device is composed of a plurality of strain gauges, a plurality of wires and an electrical data acquisition device, and is used to acquire the deformation data of the continuous wall model during the test; the soil pressure change data acquisition device is composed of an optical fiber sensor, a plurality of wires and an optical data acquisition device, and is used to acquire the soil pressure change data during the loading process; the data processor is used to process the data of the continuous wall model deformation data acquisition device and the soil pressure change data acquisition device, and finally store them in the computer. At the same time, the computer is connected to the controller through wires, and the data of applied load, continuous wall model deformation and soil pressure change are automatically processed by the computer.
[0011] Preferably, a circle of grooves is arranged in the middle of the bottom plate of the model box, and the size is the same as the enclosure. The enclosure is detachably connected to the bottom plate through the grooves. Rubber pads are provided in the grooves to enhance the tightness of the connection between the bottom plate and the enclosure to avoid mud leakage during the test. After the test, after the mud hardens and becomes a whole with the continuous wall model, the enclosure can be disassembled to provide test pieces for further research on the performance of the underground continuous wall. At the same time, it is convenient to clean the device, save test time, and improve test efficiency.
[0012] Preferably, four welding bolts are arranged on both sides of the bottom plate of the model box, and nuts can be used to connect with the column feet of the support columns with bolt holes to connect the bottom plate and the support columns of the supporting loading system into a whole. After the test, the nuts can be removed to separate the support columns from the bottom plate, which is convenient for taking out the test pieces connected with the continuous wall model and the mud. It is also beneficial for the maintenance and repair of the loading system and saves the test cost.
[0013] Preferably, two opposing enclosures in the length direction of the model box are welded with limit pieces, and a limit groove is formed between the two opposing limit pieces, which is used to limit the movement range of the continuous wall model when the continuous wall model is pressed into the mud with a load simulating its actual deadweight, so as to ensure that the continuous wall model remains vertical during the sinking process and the positions of the models remain in a straight line, thereby ensuring the accuracy and stability of the test data and helping to form a continuous wall model mud specimen that meets the test requirements.
[0014] Preferably, a side panel of the model box is provided with holes, which are connecting wire channels between the optical fiber sensor and the optical data collector. At the same time, in order to ensure the sealing of the model box and prevent mud from leaking out during the test, the holes are sealed with glass glue.
[0015] Preferably, the sliding device of the loading system can move along the guide rail, and the guide rail is provided with limit holes, so that the sliding device can accurately slide to a predetermined position (a temporary connection can be adopted between the sliding device and the limit hole, and then separated to reach the next limit hole after loading is completed), and the loading device is connected to the loading device below the sliding device, and the hydraulic jack is controlled by the controller to apply the load, and the size of the applied load is accurately controlled by the pressure sensor, and then the continuous wall model is acted on by the distribution plate and the loading plate. Since the bottom area of the loading plate exceeds the top area of the continuous wall model, it is ensured that the load is completely applied to the continuous wall model. At the same time, after loading a section of the continuous wall model, it can slide along the guide rail through the sliding device to reach the loading position of the next section of the continuous wall model, avoiding problems such as incomplete loading caused by excessive loading plate area.
[0016] Preferably, the data acquisition and processing device is composed of a continuous wall model deformation data acquisition device, a soil pressure change data acquisition device, a data processor and a computer. The continuous wall model deformation data acquisition device uses the deformation data of the continuous wall model during the test by deforming the strain gauge bonded to the continuous wall model, thereby reflecting the deformation situation. The continuous wall model is provided with strain gauges at the top, middle and bottom positions to reduce data errors. The soil pressure change data acquisition device collects the soil pressure change data during the loading process by means of optical fiber sensors installed on the bottom plate, thereby obtaining the pressure change situation. The optical fiber sensors are arranged on the front and rear sides of the bottom plate for soil pressure change. The data processor processes the data of the electrical data collector and the optical data collector, and summarizes them in the computer terminal together with the applied load data transmitted by the controller. The computer summarizes the electrical data, optical data and load data, and performs final processing and storage.
[0017] Technical effects of the utility model:
[0018] 1) The fully prefabricated underground continuous wall model of the utility model is scaled in proportion to the real object, and uses mud with the same proportion as in the actual project, which restores the actual state of the installation of the fully prefabricated underground continuous wall and highly simulates the entire construction process of the installation of the fully prefabricated underground continuous wall. It helps to gain a deep understanding of the construction technology and mechanical properties of the fully prefabricated underground continuous wall, predict and evaluate possible problems in actual construction, and provide strong support for optimizing the construction plan.
[0019] 2) The utility model device adopts an advanced data acquisition system, combining the advantages of electrical signal transmission stability, equipment compatibility and optical signal transmission speed and strong anti-interference ability. It can record the stress, strain and other data of the model in the simulated construction process in real time and accurately, providing rich data support for the analysis of the mechanical properties and construction behavior of the fully prefabricated underground continuous wall, and promoting in-depth research development.
[0020] 3) The device of the utility model is convenient and efficient to operate. After a certain amount of mud is placed in the model box, it is only necessary to apply a certain amount of load to the model by operating the loading system to simulate the process of the fully prefabricated underground continuous wall sinking by its own weight in the actual engineering environment. The limit holes on the guide rails ensure that the sliding device can accurately reach the predetermined loading position, and the limit grooves of the model box can limit the movement of the model during the test, thereby ensuring the accuracy and stability of the test data.
[0021] 4) The device of the utility model adopts standardized components and modular design. The enclosure and the base plate are connected by grooves, and the base plate and the support column are connected by bolts at the support column feet. Each component can be disassembled and reused, which is convenient for cleaning, maintenance, inspection and repair of the device in the future, saving test time and material costs. After the mud hardens, the enclosure and the support column are disassembled to obtain a fully prefabricated underground continuous wall model structure specimen, providing conditions for further research.
[0022] 5) The device of the utility model can highly simulate the construction process of a fully prefabricated underground continuous wall, and record in real time and accurately various data such as stress and strain of the underground continuous wall model during the construction process, so as to predict and evaluate possible problems that may arise in actual construction, provide safety precautions for actual construction, provide strong support for optimizing construction plans, promote the application of prefabricated underground continuous wall structures, help achieve the "dual carbon" goals, ease resource and environmental constraints, build a resource-saving and environmentally friendly society, and enhance sustainable development capabilities. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0024] Figure 2 for Figure 1 A schematic top view of the bottom plate of the model box;
[0025] Figure 3 for Figure 1 A schematic front view of the bottom plate of the model box;
[0026] Figure 4 for Figure 1 A top view of the model box in FIG.
[0027] Figure 5 for Figure 1 A front view schematic diagram of the model box in FIG.
[0028] Figure 6 for Figure 1 A schematic diagram of the structure of the guide rail and the sliding device;
[0029] Figure 7 for Figure 6 Schematic diagram of the connection structure of the guide rail and the sliding device;
[0030] Figure 8 for Figure 1 Schematic diagram of the connection structure between the base plate and the supporting column foot;
[0031] In the figure: 1. enclosure; 2. bottom plate; 3. support column; 4. limiter; 5. support column foot; 6. hole; 7. guide rail; 8. sliding device; 9. hydraulic jack; 10. pressure sensor; 11. distribution plate; 12. loading plate; 13. optical data collector; 14. electrical data collector; 15. data processor; 16. controller; 17. computer; 18. optical fiber sensor; 19. groove; 20. rubber pad; 21. continuous wall model; 22. mud; 23. strain gauge; 24. nut; 25. limit hole; 26. spring; 27. limit block. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0033] Reference Figure 1-8 As shown, the utility model provides a model experimental device for simulating the construction of a fully prefabricated underground continuous wall, comprising: a model box system, a loading system and a data acquisition and processing system;
[0034] The model box system includes a rectangular steel model box, which has an upward opening, and is made of steel panels 1 welded to form a whole. One side panel 1 has a hole 6 for connecting a fiber optic sensor 18 and an optical data collector 13, and the bottom is a steel bottom plate 2. The middle of the bottom plate 2 is a groove 19 with a rubber pad 20, which can be detachably integrated with the panel 1. The bottom plate 2 has four welded bolts on each side, which can be connected to the support column 3 through the support column foot 5 with nuts 24 to form a whole.
[0035] The loading system includes a guide rail 7, a sliding device 8 and a loading device. The loading device is composed of a hydraulic jack 9, a pressure sensor 10, a distribution plate 11, a loading plate 12 and a controller 16. The loading load is precisely controlled by the controller 16. The loading device is connected to the sliding device 8 and moves left and right through the guide rail 7 with the help of the sliding device 8, so as to load at different positions.
[0036] The data acquisition and processing system includes a continuous wall model deformation data acquisition device, a soil pressure change data acquisition device, a data processor 15 and a computer 17. The continuous wall model deformation data acquisition device is composed of a plurality of strain gauges 23, a plurality of wires and an electrical data acquisition device 14, and the soil pressure change data acquisition device is composed of an optical fiber sensor 18, a plurality of wires and an optical data acquisition device 13. The data of the continuous wall model 21 deformation data acquisition device and the soil pressure change data acquisition device are processed by the data processor 15 and finally stored in the computer 17. At the same time, the computer 17 is connected to the controller 16 by wires, and the computer 17 automatically processes the data of applied load, deformation of the continuous wall model 21 and soil pressure change.
[0037] Reference Figure 1 , Figure 3 and Figure 5 As shown, a circle of grooves 19 are arranged in the middle of the bottom plate 2 of the above-mentioned model box, and the size is matched with the enclosure 1. The enclosure 1 is detachably connected to the bottom plate 2 through the grooves 19. A rubber pad 20 is arranged in the grooves 19 to enhance the compactness of the connection between the bottom plate 2 and the enclosure 1 to avoid leakage of mud 22 during the test. After the test, after the mud 22 hardens and becomes a whole with the continuous wall model 21, the enclosure 1 can be disassembled to provide a test piece for further studying the performance of the underground continuous wall, and at the same time facilitate cleaning of the device, save test time, and improve test efficiency.
[0038] Reference Figure 1 and Figure 8As shown, four welding bolts are arranged on both sides of the bottom plate 2 of the above-mentioned model box, and nuts 24 can be used to connect with the support column feet 5 with bolt holes to connect the bottom plate 2 and the support columns 3 supporting the loading system into a whole. After the test, the nuts 24 can be removed to separate the support columns 3 from the bottom plate 2, which is convenient for taking out the test piece connected with the continuous wall model 21 and the mud 22, and is also conducive to the maintenance and repair of the loading system, saving the test cost.
[0039] Reference Figure 1 and Figure 4 As shown, two opposite enclosures in the length direction of the above-mentioned model box (i.e., the extension direction of the continuous wall model) are welded with limiting members 4, and a limiting groove is formed between the two opposite limiting members. When the continuous wall model 21 is pressed into the mud 22 with a load simulating the actual deadweight, the movement range of the continuous wall model 21 is limited to ensure that the continuous wall model 21 remains vertical during the sinking process, and the positions between the models remain in a straight line, thereby ensuring the accuracy and stability of the test data, and at the same time helping to form a continuous wall model 21 mud 22 specimen that meets the test requirements.
[0040] Reference Figure 1 As shown, a side panel 1 of the model box has a hole 6, which is a connecting wire channel between the optical fiber sensor 18 and the optical data collector 13. To ensure the sealing of the model box and prevent the mud 22 from leaking out during the test, the hole 6 is sealed with glass glue.
[0041] Reference Figure 1 , Figure 6 and Figure 7As shown, the sliding device 8 of the above-mentioned loading system can move along the guide rail 7, and the guide rail 7 is provided with a limit hole 25, which is temporarily connected by a spring 26 and a limit block 27 (the sliding device and the limit hole are temporarily connected by a spring and a limit block; the spring provides an inward pressure so that the limit block can clamp the sliding device to prevent it from sliding on the guide rail; the limit block is a circular protrusion shape, which matches the size of the limit hole. When the horizontal force exceeds the preset pressure of the spring, the limit block will be pushed, thereby releasing the restriction on the sliding device; when the horizontal force disappears or decreases to a certain extent, the spring will push the limit block back to its original position, re-lock the sliding device, and prevent it from sliding on the guide rail. Free sliding), the sliding device 8 can accurately slide to the predetermined position, the loading device is connected below the sliding device 8, the controller 16 is used to control the hydraulic jack 9 to apply the load, the pressure sensor 10 is used to accurately control the size of the applied load, and then the distribution plate 11 and the loading plate 12 are used to act on the continuous wall model 21. Since the bottom area of the loading plate 12 exceeds the top area of the continuous wall model 21, it is ensured that the load is completely applied to the continuous wall model 21. At the same time, after loading a section of the continuous wall model 21, the sliding device 8 can slide along the guide rail 7 to reach the loading position of the next section of the continuous wall model 21, avoiding the problem of incomplete loading caused by the excessive area of the loading plate 12.
[0042] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the above-mentioned data acquisition and processing device is composed of a continuous wall model 21 deformation data acquisition device, a soil pressure change data acquisition device, a data processor 15 and a computer 17. The continuous wall model 21 deformation data acquisition device monitors the deformation of the continuous wall model 21 during the test by deforming the strain gauge 23 bonded to the continuous wall model 21. The strain gauges 23 are arranged at the upper, middle and lower positions of the continuous wall model 21 to reduce data errors; the soil pressure change data acquisition device detects the soil pressure change during the loading process through the optical fiber sensor 18 installed on the bottom plate 2. The optical fiber sensor 18 is arranged on the front and rear sides of the bottom plate 2 where the soil pressure change is most obvious; the data processor 15 processes the data of the electrical data collector 14 and the optical data collector 13, and summarizes them in the computer 17 terminal together with the applied load data transmitted by the controller 16. The computer 17 summarizes the electrical data, optical data and load data, and performs final processing and storage.
[0043] Reference Figure 1-8 As shown, the utility model provides a simulation test method using the above-mentioned model test device for full prefabricated underground continuous wall construction simulation, comprising the following steps:
[0044] A. Collect geological survey data and full prefabricated underground continuous wall size data of the actual project, customize the mud 22 raw materials, model box, loading plate 12 and full prefabricated underground continuous wall model according to the geological survey data and the full prefabricated underground continuous wall size, prepare the mud 22 according to a certain mix ratio, and bond the strain gauges 23 on the top, middle and bottom of the continuous wall model 21;
[0045] B. Install the optical fiber sensor 18 on the base plate 2, and then use the groove 19 to install the enclosure 1. The wires of the optical fiber sensor 18 and the optical data collector 13 extend from the hole 6. Use the nut 24 to connect the support column foot 5 with the base plate 1. Install the guide rail 7 on the support column 3. The sliding device 8 on the guide rail 7 is connected to the loading device (hydraulic jack 9, pressure sensor 10, distribution plate 11 and loading plate 12). Then, the controller 16, the electrical data collector 14, the optical data collector 13, the data processor 15 and the computer 17 are connected in sequence as required;
[0046] C. Add a certain amount of mud 22 into the model box, and then put the continuous wall model 21 in sequence starting from the limit groove on one side. First, slide the loading device to the predetermined position by using the limit hole 25 on the guide rail 7 through the sliding device 8, and then control the hydraulic jack 9 to apply the load through the controller 16. The load finally acts on the continuous wall model 21 through the pressure sensor 10, the distribution plate 11 and the loading plate 12. The process of the full prefabricated underground continuous wall sinking by its own weight in the actual project is simulated by applying the load. When a continuous wall model 21 sinks to the predetermined position, move the loading device to install the next continuous wall model 21;
[0047] D. During the test, the data acquisition and processing system collects, processes and stores data in real time, uses the computer 17 to summarize the electrical data, optical data and load data, and performs automatic processing to obtain the change of applied load, the deformation of the continuous wall model and the change of soil pressure;
[0048] E. After the continuous wall model 21 is completely placed in the mud 22, and after the mud 22 hardens and becomes a whole with the continuous wall model 21, the support column 3 and the enclosure 1 can be removed to obtain a complete mud 22 and continuous wall model 21 connection specimen, providing conditions for further research on the fully prefabricated underground continuous wall model structure specimen.
[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall, characterized in that: include: Model box system, loading system and data acquisition and processing system; The model box system comprises a bottom plate and a surrounding plate, wherein the surrounding plate is arranged on the bottom plate, and the surrounding plates are arranged at the front, rear, left and right of the bottom plate, and are combined with the bottom plate to form a box structure with an opening facing upward; The loading system includes a guide rail, a support column, a sliding device and a loading device. The guide rail is mounted on the top of the two support columns. The sliding device is arranged on the guide rail. The loading device is connected to the sliding device and moves left and right through the guide rail with the help of the sliding device, so as to load at different positions. The data acquisition and processing system comprises a continuous wall model deformation data acquisition device, a soil pressure change data acquisition device, a data processor and a computer. The continuous wall model deformation data acquisition device is used to acquire the deformation data of the continuous wall model during the test. The soil pressure change data acquisition device is used to acquire the soil pressure change data during the loading process. The data processor is used to process the data of the continuous wall model deformation data acquisition device and the soil pressure change data acquisition device, and finally store them in the computer. The system also includes a controller, which is connected to the loading system and computer electrical signals; the computer automatically applies loads and processes data on the deformation of the continuous wall model and the change of soil pressure.
2. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: A circle of grooves is arranged in the middle of the bottom plate, and the size of the grooves matches the enclosure. The enclosure is detachably connected to the bottom plate through the grooves, and a rubber pad is provided in the grooves to enhance the tightness of the connection between the bottom plate and the enclosure and avoid mud leakage during testing.
3. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: A group of bolts are arranged on both sides of the bottom plate, and nuts are used to connect the support column feet of the support columns with bolt holes, so that the bottom plate and the support columns of the supporting loading system are connected as a whole.
4. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: Limiting members are arranged at intervals on two opposite enclosures along the extension direction of the continuous wall model, and a limiting groove is formed between the two opposite limiting members to limit the movement range of the continuous wall model to ensure that the continuous wall model remains vertical during the sinking process.
5. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: The loading device includes a hydraulic jack, a pressure sensor, a distribution plate, a loading plate and a controller. The hydraulic jack, the pressure sensor, the distribution plate and the loading plate are connected and arranged in sequence. The controller is used to control the hydraulic jack to apply the load, and the pressure sensor is used to accurately control the size of the applied load, and then the distribution plate and the loading plate are used to act on the continuous wall model.
6. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: The guide rail is provided with a group of limiting holes to facilitate the sliding device to slide to a predetermined position for temporary limiting.
7. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 5, characterized in that: The bottom area of the loading plate is larger than the top area of a single continuous wall model, ensuring that the load is fully applied to the continuous wall model.
8. The model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 1, characterized in that: The continuous wall model deformation data acquisition device includes a plurality of strain gauges, a plurality of wires and an electrical data acquisition device, wherein the plurality of strain gauges are connected to the electrical data acquisition device through wires; the strain gauges are arranged at the top, middle and bottom of the continuous wall model respectively to reduce data errors; The soil pressure change data acquisition device includes an optical fiber sensor, a plurality of wires and an optical data collector; the optical fiber sensor is arranged on the front and rear sides of the bottom plate, and the optical fiber sensor is connected to the optical data collector signal through the wire.
9. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 8, characterized in that: The data processor is respectively connected to the electrical data collector and the optical data collector for signal processing, and the data are summarized in the computer terminal together with the applied load data transmitted by the controller. The computer summarizes the electrical data, optical data and load data, and performs final processing and storage.
10. A model experimental device for simulating the construction of a fully prefabricated underground continuous wall according to claim 8, characterized in that: The enclosure is provided with holes as connecting wire channels between the optical fiber sensor and the optical data collector, and the holes are sealed with glass glue.