A tunnel foundation bearing capacity analysis device and analysis method

Abstract

The present application relates to the technical field of engineering detection equipment, in particular to a tunnel foundation bearing capacity analysis device and analysis method. Wherein, a tunnel foundation bearing capacity analysis device, including supporting assembly, analysis assembly, auxiliary assembly, analysis assembly includes first assembly mechanism, detection rod, first limit block, gravity block, propelling head; Auxiliary assembly includes second assembly mechanism, LIBS spectrometer, storage mechanism, material injection mechanism. The material of the tunnel foundation is detected by using the LIBS spectrometer, so that the material to be filled in the sounding hole can be determined, so that the corresponding material can be prepared in the storage mechanism. By detecting the soil layer material of the tunnel foundation, the sounding hole is repaired using the same soil layer material, which can reduce the influence of the structure change of the tunnel foundation in the previous detection of the tunnel foundation bearing capacity analysis process, thereby ensuring the accuracy of the tunnel foundation bearing capacity analysis.

Description

Technical Field

[0001] This invention relates to the field of engineering testing equipment technology, and more specifically, to a tunnel bearing capacity analysis device and analysis method. Background Technology

[0002] In the process of testing the bearing capacity of tunnel foundations, tunnel foundation bearing capacity analysis devices are often used to test the bearing capacity of the foundation. The tunnel foundation bearing capacity analysis device uses the hammering energy generated by the free fall of gravity blocks to drive the propulsion head into the foundation. The type of foundation soil layer is determined based on the depth reached by the propulsion head, and the bearing capacity of the tunnel foundation is determined.

[0003] However, during the subsequent tunnel foundation bearing capacity testing, driving the probe into the foundation will create a probe hole, which will damage the structure of the tunnel foundation. Moreover, each tunnel foundation bearing capacity testing process will damage the structure of the tunnel foundation again. That is, the structure of the tunnel foundation at the next test is different from that at the previous test. This will result in the structure of the tunnel foundation being different each time the tunnel foundation bearing capacity is tested. This may lead to deviations in the bearing capacity analysis of the tunnel foundation and make it impossible to guarantee the accuracy of the tunnel foundation bearing capacity analysis. Summary of the Invention

[0004] The problem addressed by this invention is how to reduce the structural damage to the tunnel foundation during the tunnel foundation bearing capacity testing process, while ensuring the accuracy of the tunnel foundation bearing capacity analysis.

[0005] To address the aforementioned problems, this invention provides a tunnel foundation bearing capacity analysis device, comprising a support assembly, an analysis assembly, and an auxiliary assembly. The analysis assembly includes a first assembly mechanism, a probe rod, a first limiting block, a gravity block, and a propulsion head. The first assembly mechanism is connected to the upper end of the support assembly. The probe rod is configured as a rod-shaped structure and is vertical. The upper end of the probe rod is slidably connected to the first assembly mechanism, and the lower end of the probe rod is fixedly connected to the propulsion head. The propulsion head is used to open probe holes in the tunnel foundation. The first limiting block is fixedly mounted on the probe rod, and the gravity block is located above the first limiting block and slidably connected to the probe rod.

[0006] The auxiliary components include a second assembly mechanism, a LIBS spectrometer, a storage mechanism, and a filling mechanism. The second assembly mechanism is fixedly connected to the lower end of the support component. The LIBS spectrometer is connected to the second assembly mechanism and is used to detect the material of the tunnel foundation. The storage mechanism and the filling mechanism are both connected to the second assembly mechanism. The storage mechanism converts a material with the same material as the soil layer in the penetration hole into a filler. One end of the filling mechanism is connected to the storage mechanism, and the other end is connected to the penetration hole.

[0007] The technical advantages of this invention are as follows: By using a LIBS spectrometer to test the material of the tunnel foundation, the material to be filled into the probe hole can be determined, allowing the corresponding material to be added into the storage mechanism, which then converts the material into filler. During the tunnel foundation analysis force test, a gravity block is lifted and allowed to fall freely under gravity. When the gravity block contacts the first limiting block, it sequentially drives the first limiting block, the probe rod, and the propulsion head downwards. Simultaneously, during the downward movement of the propulsion head, probe holes are opened in the tunnel foundation. The depth reached by the propulsion head into the tunnel foundation, i.e., the depth of the probe hole, determines the type of soil layers in the tunnel foundation, whether there are shallowly buried weak underlying layers or shallowly buried protruding hard layers, or cavities, thereby determining the bearing capacity of the tunnel foundation. Afterwards, the filling material in the storage mechanism is transferred to the probe hole using an injection mechanism to fill and repair the probe hole. Therefore, by testing the soil material of the tunnel foundation before analyzing its bearing capacity, and using the same soil material to repair the penetration test holes after the analysis, the impact of the preceding testing on the structural changes of the tunnel foundation can be reduced during subsequent bearing capacity analysis. This minimizes the influence of the analysis on the results of the subsequent bearing capacity analysis and ensures the accuracy of the bearing capacity analysis.

[0008] Simultaneously, a first assembly mechanism is provided to integrate the probe rod, first limiting block, gravity block, and propulsion head in the analysis component, facilitating the connection between the analysis component and the support component. A second assembly mechanism is provided to integrate the LIBS spectrometer, material storage mechanism, and material injection mechanism in the auxiliary component, facilitating the connection between the auxiliary component and the support component. Therefore, by driving the support component, both the analysis component and the auxiliary component can be driven simultaneously, facilitating the use of the tunnel foundation bearing capacity analysis device.

[0009] Optionally, the second assembly mechanism includes a second assembly plate, a third assembly plate, a fourth assembly plate, and a third electric push rod. The second assembly plate is fixedly connected to the lower end of the support assembly, and the third electric push rod is fixedly connected to the upper end of the second assembly plate. The output shaft of the third electric push rod is vertical, passes through the second assembly plate, and is located below the first assembly mechanism. The output shaft of the third electric push rod is detachably connected to the LIBS spectrometer. The fourth assembly plate is located above the second assembly plate, and the third assembly plate is located between the second and fourth assembly plates. Both ends of the third assembly plate are fixedly connected to the second and fourth assembly plates, respectively. The upper end of the storage mechanism is fixedly connected to the fourth assembly plate, and the lower end of the storage mechanism passes through the second assembly plate and communicates with the injection mechanism.

[0010] Optionally, the storage mechanism includes a storage cylinder, a sealing cap, a threaded feeding rod, a first motor, a feeding pipe, a metering valve, and a pump. The upper end of the storage cylinder is fixedly connected to the fourth assembly plate, and the lower end passes through the second assembly plate. The upper end of the storage cylinder is open. The sealing cap is disposed at the upper opening of the storage cylinder and connected to the storage cylinder. The lower end of the inner wall of the storage cylinder is provided with the first motor. The output shaft of the first motor is vertically arranged. The threaded feeding rod is vertically arranged. One end of the threaded feeding rod is rotatably connected to the sealing cap, and the other end is fixedly connected to the output shaft of the first motor. The feeding pipe communicates with the storage pipe, and the metering valve and the pump are connected in series on the feeding pipe.

[0011] Optionally, the injection mechanism includes a drive unit and two sets of injection housings. The drive unit includes a drive housing, and two sets of second motors, two sets of first sliders, two sets of first lead screws, a linkage rod, two sets of third motors, and a second lead screw disposed within the drive housing. An adjustment groove is provided on one side wall of the drive housing. The second lead screw is horizontally positioned, and both ends of the second lead screw are respectively connected to the output ends of the two sets of third motors. Both sets of first sliders are threaded onto the second lead screws, and the two sets of first lead screws are vertically positioned. The bottom of the inner wall of the drive housing is slidably connected to the two sets of second motors. The machine has two sets of first sliders slidably connected to the top of the inner wall of the drive housing. One end of each set of first lead screws is fixedly connected to the output shaft of each set of second motors, and the other end of each set of first lead screws is rotatably connected to the two sets of first sliders. Each set of first lead screws is rotatably connected to a linkage rod. Two sets of third motors are symmetrically fixedly connected to the top of the inner wall of the drive housing. Each set of first sliders is threadedly connected to a second lead screw. Both ends of the second lead screws are fixedly connected to the output ends of the two sets of third motors, and the ends of the two sets of linkage rods are fixedly connected to the two injection housings.

[0012] Optionally, the support assembly includes a first frame, two sets of uprights, two sets of diagonal braces, and a second frame. The second frame and the first frame are located on the upper and lower sides, respectively. The two sets of uprights and the two sets of diagonal braces are located between the first frame and the second frame. The two ends of the two sets of uprights and the two sets of diagonal braces are fixedly connected to the first frame and the second frame, respectively. The first assembly mechanism includes a first assembly plate and a sleeve. The first assembly plate is embedded in the second frame. The sleeve is a tubular structure with hollow ends and is in a vertical state. The upper end of the probe is slidably connected to the sleeve. The second assembly plate is embedded in the first frame.

[0013] Optionally, the support assembly further includes a first electric push rod, a servo motor, and a linkage block. The first electric push rod is fixedly connected to the second frame, and its output shaft is arranged downwards. The servo motor is fixedly connected to the output shaft of the first electric push rod, and the output shaft of the servo motor is arranged horizontally. The linkage block is fixedly connected to the output shaft of the servo motor. A limit groove is formed on the gravity block, and the linkage block is used to move in and out of the limit groove under the drive of the servo motor.

[0014] Optionally, the analysis component further includes a first linkage rod and a second linkage sleeve, one end of the first linkage rod being fixedly connected to the first limiting block and the other end being fixedly connected to the second linkage sleeve, and the second linkage sleeve being slidably sleeved on the upright.

[0015] Optionally, the analysis component further includes a second limiting block, a second linkage rod, and a second linkage sleeve. The second limiting block is located above the gravity block and is fixedly connected to the detection rod. One end of the second linkage rod is fixedly connected to the second limiting block, and the other end is fixedly connected to the second linkage sleeve. The second linkage sleeve is slidably sleeved on the upright.

[0016] Optionally, the support assembly further includes a second electric push rod, which is fixedly connected to the first electric push rod. A limiting hole is provided on the outer wall of the sleeve, and the output shaft of the second electric push rod passes through the limiting hole and abuts against the outer wall of the probe rod.

[0017] The present invention also provides a method for analyzing the bearing capacity of tunnel foundations, using the tunnel foundation bearing capacity analysis device described above, comprising the following steps:

[0018] The drive support assembly moves to the location where the tunnel foundation needs to be detected, and simultaneously drives the LIBS spectrometer in the auxiliary assembly connected to the support assembly through the first assembly mechanism to move to the location where the tunnel foundation needs to be detected, and simultaneously drives the probe rod connected to the analysis assembly connected to the support assembly through the second assembly mechanism to move to the location where the tunnel foundation needs to be detected;

[0019] The material of the tunnel foundation is detected using the LIBS spectrometer, and a material of the same material as the tunnel foundation is stored in a storage mechanism connected to the first assembly mechanism in the auxiliary component. The material of the same material as the tunnel foundation is used to make a filler using the storage mechanism.

[0020] The gravity block fitted onto the probe rod in the analysis component is lifted to a specified height, and then the free fall motion of the gravity block impacts the first limiting block fixedly connected to the probe rod in the analysis component, causing the probe rod to move downwards, and causing the propulsion head fixedly connected to the lower end of the probe rod in the analysis component to move downwards, until the propulsion head opens a probe hole in the tunnel foundation;

[0021] The filling material in the storage mechanism is transferred to the probe hole using the injection mechanism connected to the first assembly mechanism in the auxiliary component to repair the probe hole;

[0022] The material of the tunnel foundation was tested again using the LIBS spectrometer.

[0023] The technical advantages of this invention are as follows: Since the bearing capacity of a tunnel foundation is related to its material, a LIBS spectrometer is used to test the material of the tunnel foundation before the bearing capacity analysis process. After the analysis, the test holes are repaired using a storage and injection mechanism, and then the LIBS spectrometer is used again to test the material of the tunnel foundation. If the data before and after are confirmed to be the same, it indicates that the tunnel foundation structure has been repaired successfully. Therefore, by using a LIBS spectrometer to test the tunnel foundation before and after the bearing capacity analysis process, the influence of changes in the tunnel foundation structure caused by the previous bearing capacity analysis process on the subsequent bearing capacity analysis process can be further avoided, and the accuracy of the tunnel foundation bearing capacity analysis can be further guaranteed. Attached Figure Description

[0024] Figure 1 A schematic diagram of the tunnel bearing capacity analysis device according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the support assembly according to an embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram of the structure of the analysis component according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic diagram of the structure of the auxiliary component according to an embodiment of the present invention is shown;

[0028] Figure 5 A cross-sectional view of the material storage mechanism according to an embodiment of the present invention is shown;

[0029] Figure 6 A top view of the material storage mechanism according to an embodiment of the present invention is shown;

[0030] Figure 7 A schematic diagram of the injection mechanism according to an embodiment of the present invention is shown;

[0031] Figure 8 A cross-sectional view of the drive unit according to an embodiment of the present invention is shown;

[0032] Figure 9 A flowchart of a tunnel foundation bearing capacity analysis method according to another embodiment of the present invention is shown.

[0033] Reference numerals: 1. Support assembly; 11. First frame; 12. Caster wheel; 13. Support leg; 14. Upright pole; 15. Diagonal brace; 16. Second frame; 17. First electric push rod; 18. Servo motor; 19. Linkage block; 110. Second electric push rod; 2. Analysis assembly; 21. First assembly plate; 22. Sleeve; 23. Detector rod; 24. Push head; 25. First limiting block; 26. First linkage rod; 27. First linkage sleeve; 28. Second limiting block; 29. ​​Second linkage rod; 210. Second linkage sleeve; 211. Handle; 212. Gravity block; 213. Limiting groove; 214. Limiting hole; 3. Auxiliary assembly; 31. Second assembly plate; 32. Third assembly plate; 33. 34. Assembly plate; 34. Storage mechanism; 341. Storage cylinder; 342. Sealing cover; 343. Linkage cover; 344. Threaded feed rod; 345. First motor; 346. Feeding pipe; 347. Metering valve; 348. Pump; 35. Third electric push rod; 36. LIBS spectrometer; 37. Guide hole; 38. Balance block; 39. Injection mechanism; 391. Drive unit; 3911. Drive housing; 3912. Adjustment groove; 3913. Second motor; 3914. First slider; 3915. First lead screw; 3916. Linkage rod; 3917. Third motor; 3918. Second lead screw; 392. Injection housing; 393. Injection hole; 394. Baffle plate; 395. Isolation plate. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] To solve the above problems, such as Figure 1 , Figure 3 as well as Figure 4As shown, an embodiment of the present invention provides a tunnel foundation bearing capacity analysis device, including a support component 1, an analysis component 2, and an auxiliary component 3. The analysis component 2 includes a first assembly mechanism, a probe rod 23, a first limiting block 25, a gravity block 212, and a propulsion head 24. The first assembly mechanism is connected to the upper end of the support component 1. The probe rod 23 is configured as a rod-shaped structure and is in a vertical state. The upper end of the probe rod 23 is slidably connected to the first assembly mechanism, and the lower end of the probe rod 23 is fixedly connected to the propulsion head 24. The propulsion head 24 is used to open probe holes in the tunnel foundation. The first limiting block 25 is fixedly disposed on the probe rod 23, and the gravity block 212 is located above the first limiting block 25 and is slidably connected to the probe rod 23.

[0036] The auxiliary component 3 includes a second assembly mechanism, a LIBS spectrometer 36, a storage mechanism 34, and a filling mechanism 39. The second assembly mechanism is fixedly connected to the lower end of the support component 1. The LIBS spectrometer 36 is connected to the second assembly mechanism and is used to detect the material of the tunnel foundation. The storage mechanism 34 and the filling mechanism 39 are both connected to the second assembly mechanism. The storage mechanism 34 is used to convert the material with the same material as the soil layer in the penetration hole into a filler. One end of the filling mechanism 39 is connected to the storage mechanism 34, and the other end is used to connect to the penetration hole.

[0037] Specifically, the support component 1 can be equipped with a bracket or a trolley. When the support component 1 is set as a trolley, the analysis component 2 and auxiliary component 3 can be moved by driving the trolley, which facilitates the detection of different areas of the tunnel foundation. The LIBS spectrometer 36 emits ultrashort pulse lasers to focus on the surface of the soil layer to form plasma, and then analyzes the plasma emission spectrum to identify the material of the soil layer. At the same time, the propulsion head 24 is set as a conical propulsion head.

[0038] In this embodiment, the support assembly 1 is driven to the area of ​​the tunnel foundation that needs to be tested. The LIBS spectrometer 36 is used to detect the material of the tunnel foundation in this area, and the same material as the tunnel foundation is stored in the storage mechanism 34 and converted into filler by the storage mechanism 34. Then, the bearing capacity analysis of the tunnel foundation is performed. First, the gravity block 212 is driven upward to the designated position. The gravity block 212 is released and falls freely to hit the first limiting block 25. The first limiting block 25 is forced to drive the probe rod 23 to fall. At the same time, the push head 24 at the lower end of the probe rod 23 is driven to open a probe hole on the tunnel foundation. Then, the output end of the injection mechanism 39 is connected to the probe hole, and the injection mechanism 39 is used to transfer the filler in the storage mechanism 34 into the probe hole to fill the probe hole.

[0039] In summary, by using the LIBS spectrometer 36 to test the material of the tunnel foundation, the material to be filled into the probe hole can be determined, allowing the corresponding material to be added into the storage mechanism 34, which then converts the material into filler. During the tunnel foundation analysis force test, the gravity block 212 is lifted and falls freely under gravity. When the gravity block 212 contacts the first limiting block 25, it sequentially drives the first limiting block 25, the probe rod 23, and the propulsion head 24 downwards. Simultaneously, during the downward movement of the propulsion head 24, probe holes are opened in the tunnel foundation. The depth reached by the propulsion head 24 into the tunnel foundation, i.e., the depth of the probe hole, determines the type of soil layers in the tunnel foundation, whether there are shallowly buried weak underlying layers or shallowly buried protruding hard layers, or cavities, thereby determining the bearing capacity of the tunnel foundation. Afterwards, the filling material in the storage mechanism 34 is transferred to the probe hole using the injection mechanism 39 to fill and repair the probe hole. Therefore, by testing the soil material of the tunnel foundation before analyzing its bearing capacity, and using the same soil material to repair the penetration test holes after the bearing capacity analysis, the impact of the preceding testing on the structural changes of the tunnel foundation can be reduced during subsequent bearing capacity analysis. This minimizes the impact on the subsequent bearing capacity analysis and ensures the accuracy of the bearing capacity analysis.

[0040] Simultaneously, a first assembly mechanism is provided to integrate the probe rod 23, first limiting block 25, gravity block 212, and propulsion head 24 in the analysis component 2, facilitating the connection between the analysis component 2 and the support component 1. A second assembly mechanism is provided to integrate the LIBS spectrometer 36, material storage mechanism 34, and material injection mechanism 39 in the auxiliary component 3, facilitating the connection between the auxiliary component 3 and the support component 1. Therefore, by driving the support component 1, the analysis component 2 and the auxiliary component 3 can be driven simultaneously, facilitating the use of the tunnel foundation bearing capacity analysis device.

[0041] Optionally, such as Figure 4As shown, the second assembly mechanism includes a second assembly plate 31, a third assembly plate 32, a fourth assembly plate 33, and a third electric push rod 35. The second assembly plate 31 is fixedly connected to the lower end of the support assembly 1, and the third electric push rod 35 is fixedly connected to the upper end of the second assembly plate 31. The output shaft of the third electric push rod 35 is vertical, passes through the second assembly plate 31, and is located below the first assembly mechanism. The output shaft of the third electric push rod 35 is detachably connected to the LIBS spectrometer 36. The fourth assembly plate 33 is located above the second assembly plate 31, and the third assembly plate 32 is located between the second assembly plate 31 and the fourth assembly plate 33. Both ends of the third assembly plate 32 are fixedly connected to the second assembly plate 31 and the fourth assembly plate 33, respectively. The upper end of the storage mechanism 34 is fixedly connected to the fourth assembly plate 33, and the lower end of the storage mechanism 34 passes through the second assembly plate 31 and communicates with the injection mechanism 39.

[0042] Specifically, the second assembly plate 31, the third assembly plate 32, and the fourth assembly plate 33 are all configured as rectangular flat plates. The third assembly plate 32 is inclined. Meanwhile, the second assembly plate 31 has a guide hole 37 opposite to the probe rod 23, allowing the probe rod 23 and the push head 24 to pass through the second assembly plate 31.

[0043] In this embodiment, a third electric push rod 35 is installed on the second assembly plate 31, and a LIBS spectrometer 36 is connected to the output shaft of the third electric push rod 35. When testing the material of the tunnel foundation, the third electric push rod 35 is activated to drive the LIBS spectrometer 36 closer to the surface of the tunnel foundation, which is beneficial for testing the material of the tunnel foundation. After the test is completed, the third electric push rod 35 is activated again to drive the LIBS spectrometer 36 away from the surface of the tunnel foundation, so as to avoid the LIBS spectrometer 36 from colliding with the tunnel foundation and being damaged during the movement of the support assembly 1.

[0044] By setting up the second assembly plate 31, the third assembly plate 32, and the fourth assembly plate 33, the material storage mechanism 34 and the material injection mechanism 39 can be assembled.

[0045] Optionally, such as Figure 4 As shown, the auxiliary component 3 also includes a balance block 38. The balance block 38 and the injection mechanism 39 are symmetrically arranged on both sides of the second assembly plate 31. The balance block 38 is fixedly connected to the lower end of the second assembly plate 31.

[0046] Specifically, the balance block 38 can be configured as a weight, lead block, or other structure.

[0047] In this embodiment, the injection mechanism 39 is connected to one side of the second assembly plate 31. The force on this side of the second assembly plate 31 is relatively large, and the support component 1 is difficult to maintain stability. By fixing the balance block 38 to the other side of the second assembly plate 31, the force on both sides of the second assembly plate 31 can be adjusted by the balance block 38 to ensure the stability of the support component 1.

[0048] Optionally, such as Figure 5 and Figure 6 As shown, the storage mechanism 34 includes a storage cylinder 341, a sealing cover 342, a threaded feeding rod 344, a first motor 345, a feeding pipe 346, a metering valve 347, and a pump 348. The upper end of the storage cylinder 341 is fixedly connected to the fourth assembly plate 33, and the lower end passes through the second assembly plate 31. The upper end of the storage cylinder 341 is open. The sealing cover 342 is located at the upper opening of the storage cylinder 341 and is connected to the storage cylinder 341. The lower end of the inner wall of the storage cylinder 341 is equipped with the first motor 345. The output shaft of the first motor 345 is vertically arranged. The threaded feeding rod 344 is vertically arranged. One end of the threaded feeding rod 344 is rotatably connected to the sealing cover 342, and the other end is fixedly connected to the output shaft of the first motor 345. The feeding pipe 346 is connected to the storage pipe, and the metering valve 347 and the pump 348 are connected in series on the feeding pipe 346.

[0049] Specifically, the storage mechanism 34 also includes a linkage cover 343, which can be configured as a bearing, with its inner ring fixedly connected to a threaded feeding rod 344 and its outer ring fixedly connected to a sealing cover 342.

[0050] In this embodiment, a LIBS spectrometer 36 is used to detect the material of the tunnel foundation in the area, and a material identical to the tunnel foundation material is stored in the storage mechanism 34. The storage mechanism 34 then converts the material into filler. Specifically, the sealing cover 342 is opened, the material for preparing the tunnel foundation material is added into the storage cylinder 341, the sealing cover 342 is then closed, the first motor 345 is started, and the threaded feeding rod 344 is driven to rotate. After the material is stirred evenly, it forms filler and is stored in the storage cylinder 341. When filling the probe hole through the injection mechanism 39, the pump 348 is started to transfer the filler in the storage cylinder 341 to the injection mechanism 39 through the feeding pipe 346, and then the injection mechanism 39 transfers the filler into the probe hole, thereby ensuring the effectiveness of the storage mechanism 34.

[0051] Optionally, such as Figure 7 and Figure 8As shown, the injection mechanism 39 includes a drive unit 391 and two sets of injection housings 392. The drive unit 391 includes a drive housing 3911, and two sets of second motors 3913, two sets of first sliders 3914, two sets of first lead screws 3915, a linkage rod 3916, two sets of third motors 3917, and a second lead screw 3918 disposed within the drive housing 3911. An adjustment groove 3912 is provided on one side wall of the drive housing 3911. The second lead screw 3918 is horizontally arranged, and its two ends are respectively connected to the output ends of the two sets of third motors 3917. The two sets of first sliders 3914 are threadedly connected to the second lead screw 3918, the two sets of first lead screws 3915 are vertically arranged, and two linkage rods are slidably connected to the bottom of the inner wall of the drive housing 3911. The second motor 3913 drives the top of the inner wall of the housing 3911, which is slidably connected to two sets of first sliders 3914. One end of each set of first lead screws 3915 is fixedly connected to the output shaft of the two sets of second motors 3913, and the other end of each set of first lead screws 3915 is rotatably connected to the two sets of first sliders 3914. Each set of first lead screws 3915 is rotatably connected to a linkage rod 3916. The top of the inner wall of the housing 3911 is symmetrically fixedly connected to two sets of third motors 3917. Each set of first sliders 3914 is threadedly connected to a second lead screw 3918. The two ends of the second lead screw 3918 are fixedly connected to the output ends of the two sets of third motors 3917, and the ends of the two sets of linkage rods 3916 are fixedly connected to the two sets of injection housings 392.

[0052] Specifically, the surface of the injection housing 392 is provided with an injection hole 393, and a flexible hose is connected between the injection hole 393 and the end of the feeding pipe 346. The top of the inner wall of both sets of injection housings 392 is fixedly connected with a baffle plate 394, and the outer wall of both sets of injection housings 392 is fixedly connected with an isolation plate 395, and the isolation plate 395 and the baffle plate 394 are arranged at the same horizontal level.

[0053] In this embodiment, activating two sets of second motors 3913 drives two sets of linkage rods 3916 to move along two sets of first lead screws 3915 respectively. With the first lead screws 3915 in a vertical position, the two sets of linkage rods 3916 move synchronously in the vertical direction, thus driving the two sets of injection shells 392 to move synchronously in the vertical direction. Activating two sets of third motors 3917 causes two sets of first sliders 3914 to move along a second lead screw 3918. With the second lead screw 3918 in a horizontal position, one set of first sliders 3914 has the same thread as the second lead screw 3918, while the other set has the opposite thread. This causes the two sets of first sliders 3914 to move relative to each other in the horizontal direction, thus driving the two sets of injection shells 392 to move relative to each other or in opposite directions in the horizontal direction. Therefore, the injection mechanism 39 is configured as a drive unit 391 and two sets of injection housings 392. The drive unit 391 can drive the two sets of injection housings 392 to move synchronously in the vertical direction and to move towards or away from each other in the horizontal direction. This allows the two sets of injection housings 392 to accurately correspond to the probe holes, thereby ensuring the effectiveness of the injection mechanism 39.

[0054] Meanwhile, a baffle plate 394 is fixedly connected to the top of the inner wall of the injection housing 392 to prevent the filler from entering the injection housing 392 and being discharged from the top of the injection housing 392. An isolation plate 395 is fixedly connected to the outer wall of the injection housing 392. When the injection housing 392 is in use, it needs to be placed into the probe hole. Since the injection housing 392 discharges the filler from the bottom, the isolation plate 395 can be used to abut against the ground around the probe hole to limit the injection housing 392 and prevent the bottom of the injection housing 392 from abutting against the bottom of the probe hole, thus ensuring that the injection housing 392 can effectively discharge the filler.

[0055] Optionally, such as Figure 2 As shown, the support assembly 1 includes a first frame 11, two sets of uprights 14, two sets of diagonal braces 15, and a second frame 16. The second frame 16 and the first frame 11 are located on the upper and lower sides, respectively. The two sets of uprights 14 and the two sets of diagonal braces 15 are located between the first frame 11 and the second frame 16. The two ends of the two sets of uprights 14 and the two sets of diagonal braces 15 are fixedly connected to the first frame 11 and the second frame 16, respectively. The first assembly mechanism includes a first assembly plate 21 and a sleeve 22. The first assembly plate 21 is fixedly connected to the second frame 16. The sleeve 22 is a tubular structure with hollow ends and is in a vertical state. The upper end of the probe 23 is slidably connected to the sleeve 22. The second assembly plate 31 is fixedly connected to the first frame 11.

[0056] Specifically, the two sets of diagonal braces 15 are inclined, and the inclination angle of the two sets of diagonal braces 15 is the same as the inclination angle of the third assembly plate 32. The first assembly plate 21 is embedded in the first frame 11, and the second assembly plate 31 is embedded in the second frame 16.

[0057] In this embodiment, the support assembly 1 includes a first frame 11 and a second frame 16. The first frame 11 can be used to assemble the second assembly plate 31, and the second frame 16 can be used to assemble the first assembly plate 21, which facilitates the assembly of the analysis assembly 2 and the auxiliary assembly 3, respectively. Simultaneously, two sets of uprights 14 and two sets of diagonal braces 15 are provided between the first frame 11 and the second frame 16 to separate the first frame 11 and the second frame 16, thereby separating the analysis assembly 2 and the auxiliary assembly 3 and preventing mutual interference during assembly.

[0058] Optionally, such as Figure 2 As shown, the support assembly 1 also includes a first electric push rod 17, a servo motor 18, and a linkage block 19. The first electric push rod 17 is fixedly connected to the second frame 16, and its output shaft is set downwards. The servo motor 18 is fixedly connected to the output shaft of the first electric push rod 17, and the output shaft of the servo motor 18 is set horizontally. The linkage block 19 is fixedly connected to the output shaft of the servo motor 18. A limit groove 213 is opened on the gravity block 212, and the linkage block 19 is used to move in and out of the limit groove 213 under the drive of the servo motor 18.

[0059] Specifically, the linkage block 19 is designed as a long strip structure.

[0060] In this embodiment, since the servo motor 18 is fixedly connected to the output shaft of the first electric push rod 17, and the output shaft of the first electric push rod 17 is set downwards, and the output shaft of the servo motor 18 is fixedly connected to the linkage block 19, starting the first electric push rod 17 can drive the servo motor 18 and the linkage block 19 to move in the vertical direction; at the same time, since the output shaft of the servo motor 18 is fixedly connected to the linkage block 19, starting the servo motor 18 can drive the linkage block 19 to rotate around the output shaft of the servo motor 18, thereby adjusting the linkage block 19 to enter or leave the upper limit slot 213 of the gravity block 212. Therefore, by adjusting the linkage block 19 through the servo motor 18, the linkage block 19 can be adjusted into the limiting groove 213 of the gravity block 212. The linkage block 19 and the gravity block 212 are connected through the limiting groove 213. Then, by using the first electric push rod 17 to adjust the linkage block 19 to move in the vertical direction, the linkage block 19 and the gravity block 212 can be moved in the vertical direction simultaneously, thereby lifting the gravity block 212 to a certain height to facilitate the analysis of the bearing capacity of the tunnel foundation.

[0061] Optionally, such as Figure 3 As shown, the analysis component 2 also includes a first linkage rod 26 and a first linkage sleeve 27. One end of the first linkage rod 26 is fixedly connected to the first limiting block 25, and the other end is fixedly connected to the first linkage sleeve 27. The first linkage sleeve 27 is slidably sleeved on the upright rod 14.

[0062] In this embodiment, as the probe rod 23 moves downward in the vertical direction, it simultaneously drives the first limiting block 25 to move downward. Since one end of the first linkage rod 26 is fixedly connected to the first limiting block 25 and the other end is fixedly connected to the first linkage sleeve 27, when the first linkage sleeve 27 slides relative to the upright rod 14, it can maintain the stability of the first limiting block 25 and the probe rod 23, prevent the probe rod 23 from deviating from the trajectory, and ensure that the lower end of the probe rod 23, the push head 24, can accurately land at the required detection position of the tunnel foundation, thus ensuring the accuracy of the analysis of the bearing capacity of the tunnel foundation.

[0063] Optionally, such as Figure 3 As shown, the analysis component 2 also includes a second limiting block 28, a second linkage rod 29, and a second linkage sleeve 210. The second limiting block 28 is located above the gravity block 212 and is fixedly connected to the detection rod 23. One end of the second linkage rod 29 is fixedly connected to the second limiting block 28, and the other end is fixedly connected to the second linkage sleeve 210. The second linkage sleeve 210 is slidably sleeved on the upright rod 14.

[0064] In this embodiment, a second limiting block 28 is provided and positioned above the first limiting block 25. This means that the gravity block 212 can only move vertically between the first limiting block 25 and the second limiting block 28. When the gravity block 212 moves vertically upward, the second limiting block 28 can limit the gravity block 212, thereby ensuring that the gravity block 212 moves to the same height each time, thus ensuring the accuracy of the analysis of the tunnel foundation bearing capacity.

[0065] Optionally, such as Figure 2 and Figure 3 As shown, the support assembly 1 also includes a second electric push rod 110, which is fixedly connected to the first electric push rod 17. A limiting hole 214 is opened on the outer wall of the sleeve 22, and the output shaft of the second electric push rod 110 passes through the limiting hole 214 and abuts against the outer wall of the probe rod 23.

[0066] In this embodiment, the probe rod 23 is placed inside the sleeve 22. The output shaft of the second electric push rod 110 passes through the limiting hole 214 on the sleeve 22 and abuts against the outer wall of the probe rod 23, thus fixing the probe rod 23 inside the sleeve 22 and preventing it from moving relative to the sleeve 22. When performing tunnel foundation bearing capacity analysis, the output shaft of the second electric push rod 110 can be driven to disengage from the probe rod 23 and the limiting hole 214, thereby facilitating the tunnel foundation bearing capacity analysis. Therefore, by setting the second electric push rod 110, the probe rod 23 is raised to a certain height, and then the output shaft of the second electric push rod 110 passes through the limiting hole 214 and abuts against the probe rod 23. The propulsion head 24 at the lower end of the probe rod 23 can be used to disengage from the tunnel foundation, and interference between the propulsion head 24 and the tunnel foundation can be avoided during the movement of the support assembly 1.

[0067] Optionally, the analysis component 2 also includes an infrared rangefinder connected to the second limiting block 28 and used to detect the distance between the gravity block 212 and the second limiting block 28.

[0068] In this embodiment, an infrared rangefinder is installed on the second limiting block 28. When the gravity block 212 is adjusted between the first limiting block 25 and the second limiting block 28, the infrared rangefinder is used to detect the distance between the gravity block 212 and the second limiting block 28. In this way, the distance between the second limiting block 28 and the gravity block 212 can always be kept the same during each detection, thereby ensuring the accuracy of the tunnel foundation bearing capacity analysis.

[0069] Optionally, such as Figure 2 As shown, the support assembly 1 also includes casters 12 and support legs 13. Casters 12 are provided on the rear side of the first frame 11, and support legs 13 are provided on the front side of the first frame 11.

[0070] In this embodiment, when the tunnel foundation bearing capacity analysis device moves, the support assembly 1 is tilted backward as a whole, meaning the casters 12 support the tunnel foundation and the support legs 13 are detached from the tunnel foundation. Applying a horizontal force to the support assembly 1 then propels it to move. When the tunnel foundation bearing capacity analysis device performs testing, the support assembly 1 is positioned vertically, meaning both the casters 12 and the support legs 13 support the tunnel foundation. This ensures the stability of the support assembly 1 and thus guarantees the accuracy of the tunnel foundation bearing capacity analysis.

[0071] Optionally, such as Figure 3 As shown, the analysis component 2 also includes a handle 211, which is fixedly connected to the second linkage sleeve 210.

[0072] In this embodiment, a handle 211 is provided on the second linkage sleeve 210, and the support assembly 1 can be moved as a whole by using the handle 211.

[0073] like Figure 9 As shown, another embodiment of the present invention provides a method for analyzing the bearing capacity of tunnel foundations, using the tunnel foundation bearing capacity analysis device described above, which includes the following steps:

[0074] S1: Drive the support assembly 1 to move to the position where the tunnel foundation needs to be detected, and simultaneously drive the LIBS spectrometer 36 in the auxiliary assembly 3 connected to the support assembly 1 through the first assembly mechanism to move to the position where the tunnel foundation needs to be detected, and simultaneously drive the probe rod 23 connected to the analysis assembly 2 connected to the support assembly 1 through the second assembly mechanism to move to the position where the tunnel foundation needs to be detected.

[0075] S2: Use LIBS spectrometer 36 to detect the material of the tunnel foundation, and store the same material as the tunnel foundation in the storage mechanism 34 connected to the first assembly mechanism in the auxiliary component 3. Use the storage mechanism 34 to make the same material as the tunnel foundation into filler.

[0076] S3: Lift the gravity block 212 fitted onto the probe rod 23 in the analysis component 2 to a specified height, and then use the free fall motion of the gravity block 212 to impact the first limiting block 25 fixedly connected to the probe rod 23 in the analysis component 2, causing the probe rod 23 to move downwards, and causing the push head 24 fixedly connected to the lower end of the probe rod 23 in the analysis component 2 to move downwards until the push head 24 opens a probe hole in the tunnel foundation;

[0077] S4: Use the injection mechanism 39 connected to the first assembly mechanism in the auxiliary component 3 to transfer the filler in the storage mechanism 34 into the probe hole to repair the probe hole;

[0078] S5: The material of the tunnel foundation was tested again using the LIBS spectrometer 36.

[0079] In this embodiment, the material of the tunnel foundation is detected by a LIBS spectrometer 36, and a material identical to that of the tunnel foundation is added into the storage mechanism 34. The storage mechanism 34 is used to fill the tunnel foundation with the material identical to that of the tunnel foundation. Then, the gravity block 212 in the analysis component 2 falls freely, causing the probe rod 23 and the propulsion head 24 to move downward. The propulsion head 24 is used to open a probe hole in the tunnel foundation, and the bearing capacity of the tunnel foundation is analyzed. Afterward, the filler in the storage mechanism 34 is transferred to the probe hole through the injection mechanism 39 to fill and repair the probe hole. Finally, the LIBS spectrometer 36 is used to detect the material of the tunnel foundation until it is confirmed that the material of the repaired tunnel foundation is the same as that of the original tunnel foundation.

[0080] Therefore, since the bearing capacity of the tunnel foundation is related to its material, a LIBS spectrometer 36 is used to test the tunnel foundation material before the bearing capacity analysis. After the analysis, the penetration test holes are repaired using the material storage mechanism 34 and the injection mechanism 39, and the LIBS spectrometer 36 is used again to test the tunnel foundation material. If the data before and after are consistent, it indicates that the tunnel foundation structure has been repaired successfully. By using a LIBS spectrometer 36 to test the tunnel foundation before and after the bearing capacity analysis, the influence of changes in the tunnel foundation structure caused by the previous bearing capacity analysis on the subsequent analysis can be further avoided, thus ensuring the accuracy of the bearing capacity analysis.

[0081] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A device for analyzing the bearing capacity of tunnel foundations, characterized in that, The system includes a support component (1), an analysis component (2), and an auxiliary component (3). The analysis component (2) includes a first assembly mechanism, a probe rod (23), a first limiting block (25), a gravity block (212), and a propulsion head (24). The first assembly mechanism is connected to the upper end of the support component (1). The probe rod (23) is configured as a rod-shaped structure and is in a vertical state. The upper end of the probe rod (23) is slidably connected to the first assembly mechanism. The lower end of the probe rod (23) is fixedly connected to the propulsion head (24). The propulsion head (24) is used to open probe holes on the tunnel foundation. The first limiting block (25) is fixedly set on the probe rod (23). The gravity block (212) is located above the first limiting block (25) and is slidably connected to the probe rod (23). The auxiliary component (3) includes a second assembly mechanism, a LIBS spectrometer (36), a storage mechanism (34), and a filling mechanism (39). The second assembly mechanism is fixedly connected to the lower end of the support component (1). The LIBS spectrometer (36) is connected to the second assembly mechanism and is used to detect the material of the tunnel foundation. The storage mechanism (34) and the filling mechanism (39) are both connected to the second assembly mechanism. The storage mechanism (34) converts the material with the same material as the soil layer in the probe hole into a filler. One end of the filling mechanism (39) is connected to the storage mechanism (34), and the other end is used to connect to the probe hole. The injection mechanism (39) includes a drive unit (391) and two sets of injection housings (392). The drive unit (391) includes a drive housing (3911), and two sets of second motors (3913), two sets of first sliders (3914), two sets of first lead screws (3915), a linkage rod (3916), two sets of third motors (3917), and a second lead screw (3918) disposed in the drive housing (3911). An adjustment groove (3912) is provided on one side wall of the drive housing (3911). The second lead screw (3918) is horizontally arranged, and both ends of the second lead screw (3918) are respectively connected to the output ends of the two sets of third motors (3917). Both sets of first sliders (3914) are threaded. Connected to the second lead screw (3918), two sets of first lead screws (3915) are vertically arranged, and one end of each set of first lead screws (3915) is fixedly connected to the output shaft of each set of second motors (3913). The other end of each set of first lead screws (3915) is rotatably connected to each set of first sliders (3914). Each set of first lead screws (3915) is threaded with a linkage rod (3916). The linkage rods (3916) extend through the adjustment groove (3912) to the outside of the drive housing (3911), and the ends of the linkage rods (3916) located outside the drive housing (3911) are fixedly connected to the two sets of injection housings (392).

2. The tunnel foundation bearing capacity analysis device as described in claim 1, characterized in that, The second assembly mechanism includes a second assembly plate (31), a third assembly plate (32), a fourth assembly plate (33), and a third electric push rod (35). The second assembly plate (31) is fixedly connected to the lower end of the support assembly (1), and the third electric push rod (35) is fixedly connected to the upper end of the second assembly plate (31). The output shaft of the third electric push rod (35) is vertical, passes through the second assembly plate (31), and is located below the first assembly mechanism. The output shaft of the third electric push rod (35) is connected to the LIBS spectrometer (3). 6) Detachable connection; the fourth assembly plate (33) is located above the second assembly plate (31), the third assembly plate (32) is located between the second assembly plate (31) and the fourth assembly plate (33), the two ends of the third assembly plate (32) are fixedly connected to the second assembly plate (31) and the fourth assembly plate (33) respectively, the upper end of the storage mechanism (34) is fixedly connected to the fourth assembly plate (33), and the lower end of the storage mechanism (34) passes through the second assembly plate (31) and communicates with the injection mechanism (39).

3. The tunnel foundation bearing capacity analysis device as described in claim 2, characterized in that, The storage mechanism (34) includes a storage cylinder (341), a sealing cap (342), a threaded feeding rod (344), a first motor (345), a feeding pipe (346), a metering valve (347), and a pump (348). The upper end of the storage cylinder (341) is fixedly connected to the fourth assembly plate (33), and the lower end passes through the second assembly plate (31). The upper end of the storage cylinder (341) is open, and the sealing cap (342) is located at the upper opening of the storage cylinder (341) and connected to the storage cylinder (341). The first motor (345) is installed at the lower end of the inner wall of the storage cylinder (341). The output shaft of the first motor (345) is vertically arranged. The threaded feeding rod (344) is vertically arranged. One end of the threaded feeding rod (344) is rotatably connected to the sealing cover (342), and the other end is fixedly connected to the output shaft of the first motor (345). The feeding pipe (346) is connected to the storage cylinder (341). The metering valve (347) and the pump (348) are connected in series on the feeding pipe (346).

4. The tunnel foundation bearing capacity analysis device as described in claim 2, characterized in that, The support assembly (1) includes a first frame (11), two sets of uprights (14), two sets of diagonal braces (15), and a second frame (16). The second frame (16) and the first frame (11) are located on the upper and lower sides respectively. The two sets of uprights (14) and the two sets of diagonal braces (15) are located between the first frame (11) and the second frame (16). The two ends of the two sets of uprights (14) and the two sets of diagonal braces (15) are fixedly connected to the first frame (11) and the second frame (16) respectively. The first assembly mechanism includes a first assembly plate (21) and a sleeve (22). The first assembly plate (21) is embedded in the second frame (16). The sleeve (22) is a tubular structure with hollow ends and passes vertically through the first assembly plate (21). The upper end of the probe (23) is slidably connected to the sleeve (22). The second assembly plate (31) is embedded in the first frame (11).

5. The tunnel foundation bearing capacity analysis device as described in claim 4, characterized in that, The support assembly (1) further includes a first electric push rod (17), a servo motor (18), and a linkage block (19). The first electric push rod (17) is fixedly connected to the second frame (16) and its output shaft is set downwards. The servo motor (18) is fixedly connected to the output shaft of the first electric push rod (17) and the output shaft of the servo motor (18) is set horizontally. The linkage block (19) is fixedly connected to the output shaft of the servo motor (18). A limit groove (213) is opened on the gravity block (212). The linkage block (19) is used to move in and out of the limit groove (213) under the drive of the servo motor (18).

6. The tunnel foundation bearing capacity analysis device as described in claim 5, characterized in that, The analysis component (2) further includes a first linkage rod (26) and a second linkage sleeve (210). One end of the first linkage rod (26) is fixedly connected to the first limiting block (25), and the other end is fixedly connected to the second linkage sleeve (210). The second linkage sleeve (210) is slidably sleeved on the upright (14).

7. The tunnel foundation bearing capacity analysis device as described in claim 6, characterized in that, The analysis component (2) further includes a second limiting block (28), a second linkage rod (29), and a second linkage sleeve (210). The second limiting block (28) is located at the upper end of the gravity block (212) and is fixedly connected to the probe rod (23). One end of the second linkage rod (29) is fixedly connected to the second limiting block (28), and the other end is fixedly connected to the second linkage sleeve (210). The second linkage sleeve (210) is slidably sleeved on the upright rod (14).

8. The tunnel foundation bearing capacity analysis device as described in claim 7, characterized in that, The support assembly (1) further includes a second electric push rod (110), which is fixedly connected to the first electric push rod (17). A limiting hole (214) is opened on the outer side wall of the sleeve (22), and the output shaft of the second electric push rod (110) passes through the limiting hole (214) and abuts against the outer side wall of the probe rod (23).

9. A method for analyzing the bearing capacity of tunnel foundations, characterized in that, The application of the tunnel foundation bearing capacity analysis device as described in any one of claims 1-8 includes the following steps: The drive support assembly (1) moves to the location where the tunnel foundation needs to be detected, and simultaneously drives the LIBS spectrometer (36) in the auxiliary assembly (3) connected to the support assembly (1) through the first assembly mechanism to move to the location where the tunnel foundation needs to be detected, and simultaneously drives the probe rod (23) connected to the analysis assembly (2) connected to the support assembly (1) through the second assembly mechanism to move to the location where the tunnel foundation needs to be detected; The material of the tunnel foundation is detected by the LIBS spectrometer (36), and the same material as the tunnel foundation is stored in the storage mechanism (34) connected to the first assembly mechanism in the auxiliary component (3). The same material as the tunnel foundation is used to make a filler by the storage mechanism (34). The gravity block (212) fitted onto the probe rod (23) in the analysis component (2) is lifted to a specified height, and then the free fall motion of the gravity block (212) is used to strike the first limiting block (25) fixedly connected to the probe rod (23) in the analysis component (2), causing the probe rod (23) to move downward, and causing the propulsion head (24) fixedly connected to the lower end of the probe rod (23) in the analysis component (2) to move downward until the propulsion head (24) opens a probe hole on the tunnel foundation; The filling material in the storage mechanism (34) is transferred to the probe hole using the injection mechanism (39) connected to the first assembly mechanism in the auxiliary component (3) to repair the probe hole; The material of the tunnel foundation was tested again using the LIBS spectrometer.

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