Prefabricated soil pile reinforcement construction method for silt-free excavation and transportation of highway roadbed

Abstract

The invention belongs to the technical field of expressway engineering, and particularly relates to a prefabricated soil pile reinforcement construction method for non-sludge excavation and transportation of an expressway roadbed, which comprises the following steps: step 1, firstly, carrying out soft foundation survey work; professional surveying equipment is carried to enter a site, and the depth, the distribution range and the soil texture condition of the shallow soft foundation are detected in detail through a geological radar and drilling sampling method; after enough data is collected, a specific area needing reinforcement processing is delimited in combination with a geological report. According to the prefabricated soil pile reinforcing construction method for silt-free excavation and transportation of the expressway roadbed, the bearing capacity of a shallow soft foundation of the roadbed can be effectively improved, the problem of environmental pollution in soft foundation treatment is reduced, and the construction progress is accelerated; excavation and transportation of a large amount of sludge in traditional soft foundation treatment are avoided, and the labor intensity of construction and the engineering cost are greatly reduced; pollution to the environment in the construction process is reduced, and meanwhile, due to the fact that the construction period is short, energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of highway engineering, and in particular to a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation. Background Art

[0002] In the current highway construction process, the treatment of shallow soft soil foundation has always been a technical problem. This type of foundation has a serious impact on the stability and service life of the roadbed due to its low bearing capacity and easy settlement characteristics. Traditional soft soil foundation treatment methods, such as sludge excavation and replacement treatment, not only require a lot of manpower and material resources, but also have a long construction period and a large impact on the environment. During the sludge excavation and transportation process, a large amount of sludge needs to find a suitable disposal site, otherwise it may cause secondary pollution problems. At the same time, replacement treatment requires a large amount of sand and gravel and other materials, which not only increases the material cost, but also may affect the construction progress due to material source problems. In addition, the common soil erosion problem in the construction process of soft soil foundation will cause uneven settlement of the roadbed, which not only affects the flatness of the roadbed, but also increases the difficulty and cost of the later maintenance of the project. Therefore, there are many problems in the existing soft soil foundation treatment technology, including low construction efficiency, large environmental impact, high cost and difficulty in later maintenance. In view of these problems, a prefabricated soil pile reinforcement construction method for highway roadbed without sludge excavation is needed. Summary of the invention

[0003] Based on the existing technical problems, the present invention proposes a prefabricated soil pile reinforcement construction method for highway roadbed without silt excavation and transportation.

[0004] The present invention proposes a method for reinforcing the highway roadbed with prefabricated soil piles without silt excavation and transportation, which comprises the following steps: Step 1, first, soft foundation survey is carried out; professional survey equipment is brought into the site, and the depth, distribution range and soil conditions of the shallow soft foundation are detected in detail by means of geological radar and drilling sampling; after sufficient data is collected, the specific area that needs to be reinforced is delineated in combination with the geological report.

[0005] Step 2. Next, design the prefabricated soil piles. According to the survey data, the size, quantity and type of the prefabricated soil piles are determined by taking into account the soil characteristics and the depth of the soft foundation. Different cement soil piles, lime soil piles or curing agent soil piles are selected for different soil types. The design parameters include: pile diameter 0.5-1 meter, pile spacing 1.5-2 meters, and pile length determined according to the soft foundation depth to ensure that the pile bottom is located in a stable soil layer. A detection installation groove is also opened in the middle of the prefabricated soil pile, and a real-time detection mechanism is installed inside the detection installation groove. The real-time detection mechanism realizes the real-time monitoring of verticality during the installation of the prefabricated soil piles.

[0006] Step 3: Then carry out pile positioning and pile layout; in the reinforcement area, use the total station and GPS measuring equipment to accurately position the piles and mark the specific position of each precast earth pile; according to the pile layout drawing, transport the precast earth piles to the construction site and place them according to the marked positions.

[0007] Step 4: During the pile insertion phase, operate the vibrating pile driver to insert the prefabricated soil piles one by one into the soft soil foundation until the predetermined depth is reached; during the insertion process, the vibration and mechanical compaction of the vibrating pile driver make the soil piles tightly combined with the surrounding soft soil; after the pile body is inserted, fill and compact it; fill the gap area of ​​the pile body with the pre-prepared mixed improved soil, and then use a compactor to compact it to ensure that the filling soil is tightly combined with the prefabricated soil piles.

[0008] Step 5. Finally, carry out follow-up processing; after the construction is completed, use a professional testing agency to conduct static or dynamic load testing on the foundation to verify whether the reinforcement effect meets the design requirements; according to the test results, make necessary adjustments and optimizations to the roadbed; after confirmation, further construction of the roadbed is carried out.

[0009] Preferably, the real-time detection mechanism includes a mounting base plate, which is mounted on the top inner bottom wall of the detection mounting groove, and the top annular array of the mounting base plate is installed with support columns, and the tops of the three support columns are fixedly installed with triangular top plates, and a transfer hole is opened in the top center of the triangular top plate.

[0010] Preferably, a supporting ring is fixedly installed in the middle of the bottom end of the triangular top plate, the inner wall of the supporting ring and the inner wall of the adapter hole are both spherical, the spherical inner wall of the supporting ring and the spherical inner wall of the adapter hole are rotatably connected with a counterweight ball, and a laser emitter is fixedly installed at the central bottom end of the counterweight ball.

[0011] Preferably, a limit ring is fixedly installed on the top plate of the triangular top plate, the inner wall of the limit ring is matched with the spherical surface of the counterweight ball, and the diameter of the counterweight ball is located inside the adapter hole.

[0012] Preferably, a base and a U-shaped seat are fixedly installed on the top of the mounting base plate, and the two U-shaped seats are symmetrically arranged. The inner walls on both sides of the U-shaped seat are rotatably connected to a reel through bearings. A reel is fixedly installed on the arc surface of the reel, and a steel cable is wound around the arc surface of the reel. The directions of the two steel cables are symmetrically arranged, one end of the reel passes through and extends to one end of the U-shaped seat, and a driven sprocket is fixedly installed thereon.

[0013] Preferably, a driving motor is fixedly installed on the top of the base, and a driving shaft is fixedly installed on the output end of the driving motor through a coupling, a driving sprocket is fixedly installed on one end of the driving shaft, and the tooth grooves of the two driven sprockets are connected to the tooth grooves of the driving sprocket by a chain, one of the driven sprockets is located inside the chain, and the other driven sprocket is located outside the chain, and the rotation directions of the two driven sprockets are symmetrically arranged through chain transmission.

[0014] Preferably, a detection plate is fixedly mounted on the bottom ends of the two steel cables, a laser receiver is fixedly mounted on the top of the detection plate, and the laser emitted by the laser transmitter is received by the laser receiver.

[0015] Preferably, a limit sleeve is fixedly installed at the bottom center of the detection disk, the inner wall of the limit sleeve is rotatably connected with a rotating shaft through a bearing, a driven gear is fixedly installed on the top arc surface of the rotating shaft, and a rotating motor and an L-shaped limit plate are also fixedly installed on one side of the bottom end of the detection disk, a gear shaft is fixedly installed on the output end of the rotating motor through a coupling, a driving gear is fixedly installed on the bottom end of the gear shaft, and the gear teeth of the driving gear are meshed with the tooth grooves of the driven gear.

[0016] Preferably, a fixed connecting ring is fixedly installed at the bottom end of the L-shaped limit plate, and the inner wall of the fixed connecting ring is rotatably connected to the arc surface of the bottom end of the rotating shaft through a bearing. The arc surface of the fixed connecting ring is hinged with a first connecting rod through a pin shaft, and multiple first connecting rods are distributed in a circular array with the axis center of the rotating shaft as the center.

[0017] Preferably, the arc surface of the rotating shaft is threadedly connected to a movable ring, the arc surface of the movable ring is hinged to a second connecting rod via a pin, one end of the first connecting rod and one end of the second connecting rod are hinged to a clamping arc plate via a pin, and the surfaces of multiple clamping arc plates are in contact with the bottom arc inner wall of the detection mounting groove.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention can effectively improve the bearing capacity of shallow soft foundation of roadbed, reduce environmental pollution problems in soft foundation treatment, and speed up construction progress; avoid the excavation and transportation of a large amount of silt in traditional soft foundation treatment, greatly reduce the labor intensity and engineering cost of construction; reduce the pollution to the environment during the construction process, and at the same time, due to the short construction period, reduce energy consumption; adopt prefabricated soil pile technology, the construction has a high degree of mechanization and simple procedures, effectively shorten the construction time, and reduce the uncertainty of human operation; through the close combination of the pile body and the soil body, the bearing capacity of the shallow soft foundation is significantly improved, ensuring the long-term stability of the roadbed.

[0020] 2. This mechanism can be quickly clamped inside the detection installation slot before the installation operation of the precast soil pile. Once the installation operation is completed, it can be quickly disassembled to cooperate with the insertion operation of the next precast soil pile, which greatly improves the flexibility and efficiency of the construction process; Due to the reusability of this device, it reduces the dependence on special detection equipment, reduces construction costs, and improves the overall practicality of the equipment; Compared with the traditional method of setting sensors on the outer arc surface of the precast soil pile, the internal installation method of this device avoids the problem of being unable to be removed in soft soil foundations and reduces cost waste; Since the sensor is set inside, this design reduces the risk of damage caused by external collision or wear during construction, thereby ensuring the stability and reliability of the monitoring equipment; By avoiding the damage and non-removability of external sensors during construction, this device reduces the cost of replacing and repairing sensors and reduces the overall construction cost; Since the construction delay caused by sensor damage is reduced, this real-time detection mechanism helps to maintain the construction progress and ensure that the project is completed on time; Through real-time monitoring and correction, this device helps to ensure the verticality of the precast soil pile, thereby improving the construction quality and reducing the rework and repair caused by verticality problems in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0022] Figure 2 A three-dimensional diagram of a prefabricated soil pile structure for a highway roadbed reinforcement construction method without silt excavation and transportation;

[0023] Figure 3 A three-dimensional diagram of the detection installation groove structure of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0024] Figure 4 A three-dimensional cross-sectional view of a detection installation groove structure of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0025] Figure 5 A three-dimensional diagram of a real-time detection mechanism for a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0026] Figure 6 A three-dimensional diagram of the installation base plate structure of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0027] Figure 7 A three-dimensional diagram of an L-shaped limit plate structure for a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0028] Figure 8A three-dimensional diagram of a triangular top plate structure of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0029] Fig. 9 A three-dimensional diagram of a clamping arc plate structure for a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation;

[0030] Fig.10 It is a three-dimensional exploded diagram of the real-time detection mechanism of a prefabricated soil pile reinforcement construction method for a highway roadbed without silt excavation and transportation.

[0031] In the figure: 1. prefabricated soil pile; 2. detection installation groove; 3. real-time detection mechanism; 4. installation base plate; 5. support column; 6. triangular top plate; 7. adapter hole; 8. supporting ring; 9. counterweight ball; 10. laser transmitter; 11. limit ring; 12. base; 13. U-shaped seat; 14. reel; 15. reel; 16. steel cable; 17. driven sprocket; 18. driving motor; 19. driving shaft; 20. driving sprocket; 21. chain; 22. detection disk; 23. laser receiver; 24. limit sleeve; 25. rotating shaft; 26. driven gear; 27. rotating motor; 28. L-shaped limit plate; 29. ​​gear shaft; 30. driving gear; 31. fixed connecting ring; 32. first connecting rod; 33. moving ring; 34. second connecting rod; 35. clamping arc plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 10 A method for reinforcing the highway roadbed with prefabricated soil piles without silt excavation and transportation includes the following steps: Step 1. First, conduct soft foundation survey; carry out the site with professional survey equipment, and use geological radar and drilling sampling methods to detect the depth, distribution range and soil conditions of the shallow soft foundation in detail; after collecting enough data, combine with the geological report to delineate the specific area that needs to be reinforced.

[0034] Step 2. Next, the prefabricated soil pile 1 is designed; based on the survey data, the size, quantity and type of the prefabricated soil pile 1 are determined in consideration of the soil characteristics and the soft foundation depth; different cement soil piles, lime soil piles or curing agent soil piles are selected for different soil types; the design parameters include: pile diameter 0.5-1 meter, pile spacing 1.5-2 meters, pile length determined according to the soft foundation depth to ensure that the pile bottom is located in a stable soil layer, wherein a detection installation groove 2 is opened in the middle of the prefabricated soil pile 1, and a real-time detection mechanism 3 is installed inside the detection installation groove 2, and the real-time detection mechanism 3 realizes the real-time monitoring of the verticality during the installation of the prefabricated soil pile 1.

[0035] The real-time detection mechanism 3 includes a mounting base plate 4, which is mounted on the top inner bottom wall of the detection mounting groove 2. The top annular array of the mounting base plate 4 is installed with support columns 5. The tops of the three support columns 5 are all fixedly installed with triangular top plates 6, and a transfer hole 7 is opened in the top center of the triangular top plate 6.

[0036] Specifically, the support columns 5 are mounted in an annular array on the mounting base plate 4, and a triangular top plate 6 is fixed on the top. This structural design increases the mechanical strength and stability of the entire detection mechanism. Due to its geometric characteristics, the triangular top plate 6 can effectively disperse and withstand forces from all directions, thereby improving the stability of the overall structure.

[0037] A supporting ring 8 is fixedly installed in the middle of the bottom end of the triangular top plate 6. The inner wall of the supporting ring 8 and the inner wall of the adapter hole 7 are both spherical. The spherical inner wall of the supporting ring 8 and the spherical inner wall of the adapter hole 7 are rotatably connected with a counterweight ball 9. A laser emitter 10 is fixedly installed at the central bottom end of the counterweight ball 9.

[0038] Specifically implemented in this way, the design of the spherical inner wall allows the counterweight ball 9 to rotate freely in the supporting ring 8 and the adapter hole 7, which helps to accurately adjust the direction of the laser emitter 10 and ensure that the laser beam can be accurately aimed at the detection target; when the precast earth pile 1 is installed vertically downward, the laser is precisely docked; because the counterweight ball 9 can rotate, the offset state can be detected after the verticality is offset during the operation of the precast earth pile 1.

[0039] A limit ring 11 is fixedly mounted on the top plate of the triangular top plate 6 , and the inner wall of the limit ring 11 is matched with the spherical surface of the counterweight ball 9 , and the diameter of the counterweight ball 9 is located inside the adapter hole 7 .

[0040] Specifically implemented in this way, the design of the limit ring 11 can prevent the counterweight ball 9 from accidentally falling off during operation, ensuring the safe operation of the detection mechanism; because the limit ring 11 limits the position of the counterweight ball 9, it is easier to locate and fix the counterweight ball 9 when maintaining or replacing the laser transmitter 10, simplifying the maintenance process.

[0041] A base 12 and a U-shaped seat 13 are fixedly installed on the top of the mounting base plate 4, respectively. The two U-shaped seats 13 are symmetrically arranged. The inner walls on both sides of the U-shaped seat 13 are rotatably connected with a reel 14 through bearings. A reel 15 is fixedly installed on the arc surface of the reel 14. A steel cable 16 is wound around the arc surface of the reel 15. The directions of the two steel cables 16 are symmetrically arranged. One end of the reel 14 passes through and extends to one end of the U-shaped seat 13, and a driven sprocket 17 is fixedly installed.

[0042] Specifically implemented in this way, the steel cable 16 wound on the drum 15 can adjust the length by rotating the reel 14, thereby realizing the position adjustment of the detection equipment, increasing the flexibility of the system; the symmetrical setting of the steel cable 16 can ensure that the force is evenly distributed during operation, reducing the risk of single-point overload; the installation of the driven sprocket 17 allows the reel 14 to be connected to the power source through the chain 21 or other transmission devices, realizing efficient energy transmission and reel 14 control.

[0043] A driving motor 18 is fixedly installed on the top of the base 12, and a driving shaft 19 is fixedly installed on the output end of the driving motor 18 through a coupling. A driving sprocket 20 is fixedly installed on one end of the driving shaft 19. The tooth grooves of the two driven sprockets 17 are connected to the tooth grooves of the driving sprocket 20 through a chain 21. One driven sprocket 17 is located inside the chain 21, and the other driven sprocket 17 is located outside the chain 21. The rotation directions of the two driven sprockets 17 are symmetrically arranged through the transmission of the chain 21.

[0044] Specifically implemented in this way, through the transmission of the chain 21, the two driven sprockets 17 can achieve synchronous rotation, ensuring the synchronous operation of the reel 14, which is crucial for detection tasks that require symmetrical operations; the rotation directions of the driven sprockets 17 are symmetrically set to ensure that the retraction and release of the steel cable 16 is uniform and synchronous, thereby maintaining the balance of the detection mechanism.

[0045] A detection plate 22 is fixedly mounted on the bottom ends of the two steel cables 16 , and a laser receiver 23 is fixedly mounted on the top of the detection plate 22 . The laser emitted by the laser transmitter 10 is received by the laser receiver 23 .

[0046] Specifically, by adjusting the length and tension of the steel cable 16, the laser transmitter 10 and the receiver can be easily aligned, making the detection process more convenient; the laser receiver 23 is used to receive the light source emitted by the top laser transmitter 10 to achieve the verticality monitoring effect, and quickly feed back to the control system.

[0047] A limit sleeve 24 is fixedly installed at the bottom center of the detection disk 22, and the inner wall of the limit sleeve 24 is rotatably connected with a rotating shaft 25 through a bearing. A driven gear 26 is fixedly installed on the top arc surface of the rotating shaft 25. A rotating motor 27 and an L-shaped limit plate 28 are also fixedly installed on one side of the bottom end of the detection disk 22. A gear shaft 29 is fixedly installed on the output end of the rotating motor 27 through a coupling, and a driving gear 30 is fixedly installed on the bottom end of the gear shaft 29, and the gear teeth of the driving gear 30 are meshed with the tooth grooves of the driven gear 26.

[0048] Specifically, by gear meshing, the rotary motor 27 can accurately control the rotation of the driven gear 26 and the rotary shaft 25 , thereby achieving accurate installation and positioning of the detection disk 22 .

[0049] A fixed connecting ring 31 is fixedly installed at the bottom end of the L-shaped limiting plate 28, and the inner wall of the fixed connecting ring 31 is rotatably connected to the arc surface of the bottom end of the rotating shaft 25 through a bearing. The arc surface of the fixed connecting ring 31 is hinged with a first connecting rod 32 through a pin shaft, and multiple first connecting rods 32 are distributed in a circular array with the axis center of the rotating shaft 25 as the center.

[0050] Specifically, the detection disk 22 is controlled to be installed in parallel with the fixed connection ring 31 at the bottom under the limiting connection of the L-shaped limiting plate 28, and then under the rotation of the rotating shaft 25, the first connecting rod 32 on the control surface is opened to achieve the effect of clamping and positioning the detection disk 22.

[0051] The arc surface of the rotating shaft 25 is threadedly connected to a moving ring 33, and the arc surface of the moving ring 33 is hinged to a second connecting rod 34 through a pin shaft. One end of the first connecting rod 32 and one end of the second connecting rod 34 are hinged to a clamping arc plate 35 through a pin shaft, and the surfaces of multiple clamping arc plates 35 are in contact with the arc inner wall of the bottom end of the detection mounting groove 2.

[0052] Specifically, during the rotation of the rotating shaft 25, the moving ring 33 threadedly connected to the driving surface moves on the surface of the rotating shaft 25, thereby driving the second connecting rod 34 to swing, and cooperating with the first connecting rod 32 to realize the outward expansion or inward movement of the clamping arc plate 35. During the outward expansion, it is squeezed and installed inside the detection installation groove 2 in the precast earth pile 1, so that the detection disk 22 is installed in a parallel state, which makes it easy for the laser receiver 23 on the top of the inspection disk to receive the emitted light source on the top. When the precast earth pile 1 tilts during the installation operation, the overall mechanism tilts with the precast earth pile 1. However, the light source emitted by the laser transmitter 10 under the dead weight of the configuration ball is always facing downward, which makes it impossible for the laser receiver 23 to receive the emitted light source, thereby detecting the tilt of the precast earth pile 1 during operation, so that the tilted data transmission system performs a correction operation, thereby achieving the effect of real-time detection.

[0053] The mechanism can be quickly clamped inside the detection installation groove 2 before the installation operation of the prefabricated soil pile 1, and once the installation operation is completed, it can be quickly disassembled to cooperate with the insertion operation of the next prefabricated soil pile 1, which greatly improves the flexibility and efficiency of the construction process; due to the reusability of the device, it reduces the dependence on special detection equipment, reduces the construction cost, and improves the overall practicality of the equipment; compared with the traditional method of setting sensors on the outer arc surface of the prefabricated soil pile 1, the internal installation method of the device avoids the problem of being unable to be removed in soft soil foundations and reduces cost waste; since the sensor is set inside, the design reduces the risk of damage caused by external collision or wear during construction, thereby ensuring the stability and reliability of the monitoring equipment; by avoiding the damage and non-removability of external sensors during construction, the device reduces the cost of replacing and repairing sensors and reduces the overall construction cost; due to the reduction of construction delays caused by sensor damage, the real-time detection mechanism 3 helps to maintain the construction progress and ensure that the project is completed on time; through real-time monitoring and correction, the device helps to ensure the verticality of the prefabricated soil pile 1, thereby improving the construction quality and reducing the rework and repair caused by verticality problems in the later stage.

[0054] Step 3: Then carry out pile positioning and pile layout; in the reinforcement area, use the total station and GPS measuring equipment to accurately position the pile body and mark the specific position of each prefabricated soil pile 1; according to the pile layout drawing, transport the prefabricated soil piles 1 to the construction site and place them according to the marked positions.

[0055] Step 4: During the pile insertion phase, operate the vibrating pile driver to insert the prefabricated soil piles 1 into the soft soil foundation one by one until the predetermined depth is reached; during the insertion process, the vibration and mechanical compaction of the vibrating pile driver make the soil piles tightly combined with the surrounding soft soil; after the pile body is inserted, fill and compact it; fill the gap area of ​​the pile body with the pre-prepared mixed improved soil, and then use a compactor to compact it to ensure that the filling soil is tightly combined with the prefabricated soil pile 1.

[0056] Step 5. Finally, carry out follow-up processing; after the construction is completed, use a professional testing agency to conduct static or dynamic load testing on the foundation to verify whether the reinforcement effect meets the design requirements; according to the test results, make necessary adjustments and optimizations to the roadbed; after confirmation, further construction of the roadbed is carried out.

[0057] The present invention can effectively improve the bearing capacity of shallow soft foundation of roadbed, reduce environmental pollution problems in soft foundation treatment, and speed up construction progress; avoid the excavation and transportation of a large amount of silt in traditional soft foundation treatment, greatly reduce the labor intensity and engineering cost of construction; reduce pollution to the environment during construction, and at the same time, due to the short construction period, reduce energy consumption; adopt prefabricated soil pile 1 technology, the construction has a high degree of mechanization and simple procedures, effectively shorten the construction time, and reduce the uncertainty of human operation; through the close combination of the pile body and the soil body, the bearing capacity of the shallow soft foundation is significantly improved, ensuring the long-term stability of the roadbed.

[0058] Working principle of real-time detection: during the pile laying operation of the prefabricated soil pile 1, the real-time detection mechanism 3 is controlled to be installed inside the detection installation groove 2 of the prefabricated soil pile 1. During the installation, the installation base plate 4 is first controlled to be installed on the top inner wall of the detection installation groove 2, and then the driving motor 18 is controlled to work, and the two reels 14 are controlled to rotate synchronously and symmetrically, so that the two reels 15 can release the steel cables 16 synchronously, and then the detection plate 22 is controlled to be lowered smoothly, driving the clamping arc plate 35 to be lowered to the bottom inner wall of the detection installation groove 2. After the lowering is completed, the driving motor 18 is controlled to stop, and the rotating motor 27 is controlled to work to drive the rotating shaft 25 to rotate, so as to realize the first connecting rod 3 2 and the second connecting rod 34 swing, driving the clamping arc plate 35 to squeeze and contact with the inner wall of the detection installation groove 2, thereby controlling the detection plate 22 to be clamped and positioned so that the laser receiver 23 is located directly below the laser transmitter 10 to receive the light source emitted by the laser transmitter 10. When the precast soil pile 1 tilts during sinking, the laser receiver 23 cannot receive the light source emitted by the laser transmitter 10, thereby determining that the precast soil pile 1 is tilted, controlling the data transmission system, and performing a correction operation. When the operation of the precast soil pile 1 is completed, controlling the concrete to fill and pour the detection installation groove 2 of the precast soil pile 1, and performing the next operation of the precast soil pile 1.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation, characterized in that: The following steps are included: Step 1: First, conduct soft foundation survey; carry out professional survey equipment to the site, and use geological radar and drilling sampling methods to detect the depth, distribution range and soil conditions of the shallow soft foundation in detail; after collecting enough data, combine with the geological report to delineate the specific area that needs to be reinforced; Step 2: Next, the prefabricated soil pile (1) is designed; based on the survey data, the size, quantity and type of the prefabricated soil pile (1) are determined by taking into account the soil characteristics and the soft foundation depth; different cement soil piles, lime soil piles or curing agent soil piles are selected for different soil types; the design parameters include: pile diameter 0.5-1 meter, pile spacing 1.5-2 meters, pile length determined according to the soft foundation depth to ensure that the pile bottom is located in a stable soil layer, wherein a detection installation groove (2) is opened in the middle of the prefabricated soil pile (1), and a real-time detection mechanism (3) is installed inside the detection installation groove (2), and the real-time detection mechanism (3) realizes the action of real-time monitoring of the verticality of the prefabricated soil pile (1) during installation; Step 3: Then, pile positioning and pile arrangement are performed; in the reinforcement area, the pile positioning is performed accurately using a total station and GPS measuring equipment, and the specific position of each prefabricated soil pile (1) is marked; according to the pile arrangement drawing, the prefabricated soil piles (1) are transported to the construction site and placed according to the marked positions; Step 4: During the pile insertion process, the vibrating pile driver is operated to insert the prefabricated soil piles (1) into the soft soil foundation one by one until a predetermined depth is reached; during the insertion process, the vibration and mechanical compaction of the vibrating pile driver allow the soil piles to be tightly combined with the surrounding soft soil; after the piles are inserted, they are filled and compacted; the gaps between the piles are filled with the pre-prepared mixed improved soil, which is then compacted using a compactor to ensure that the filling soil is tightly combined with the prefabricated soil piles (1); Step 5. Finally, carry out follow-up processing; after the construction is completed, use a professional testing agency to conduct static or dynamic load testing on the foundation to verify whether the reinforcement effect meets the design requirements; according to the test results, make necessary adjustments and optimizations to the roadbed; after confirmation, further construction of the roadbed is carried out.

2. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 1 is characterized in that: The real-time detection mechanism (3) comprises a mounting base plate (4), wherein the mounting base plate (4) is mounted on the inner bottom wall of the top end of the detection mounting groove (2), and a supporting column (5) is mounted in a circular array on the top of the mounting base plate (4), and a triangular top plate (6) is fixedly mounted on the top of each of the three supporting columns (5), and a transfer hole (7) is provided at the top center of the triangular top plate (6).

3. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 2 is characterized in that: A supporting ring (8) is fixedly mounted at the middle of the bottom end of the triangular top plate (6); the inner wall of the supporting ring (8) and the inner wall of the adapter hole (7) are both spherical; the spherical inner wall of the supporting ring (8) and the spherical inner wall of the adapter hole (7) are both rotatably connected with a counterweight ball (9); and a laser emitter (10) is fixedly mounted at the central bottom end of the counterweight ball (9).

4. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 3 is characterized in that: A limit ring (11) is fixedly mounted on the top plate of the triangular top plate (6), the inner wall of the limit ring (11) is matched with the spherical surface of the counterweight ball (9), and the diameter of the counterweight ball (9) is located inside the adapter hole (7).

5. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 3 is characterized in that: A base (12) and a U-shaped seat (13) are fixedly mounted on the top of the mounting base plate (4), respectively. The two U-shaped seats (13) are symmetrically arranged. The inner walls on both sides of the U-shaped seat (13) are rotatably connected to a reel (14) via a bearing. A reel (15) is fixedly mounted on the arc surface of the reel (14). A steel cable (16) is wound around the arc surface of the reel (15). The two steel cables (16) are symmetrically arranged in their directions. One end of the reel (14) penetrates and extends to one end of the U-shaped seat (13), and a driven sprocket (17) is fixedly mounted thereon.

6. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 5 is characterized in that: A driving motor (18) is fixedly mounted on the top of the base (12); a driving shaft (19) is fixedly mounted on the output end of the driving motor (18) via a coupling; a driving sprocket (20) is fixedly mounted on one end of the driving shaft (19); the tooth grooves of the two driven sprockets (17) are connected to the tooth grooves of the driving sprocket (20) via a chain (21); one of the driven sprockets (17) is located inside the chain (21), and the other driven sprocket (17) is located outside the chain (21); and the rotation directions of the two driven sprockets (17) are symmetrically arranged through transmission via the chain (21).

7. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 5 is characterized by: A detection disk (22) is fixedly mounted on the bottom ends of the two steel cables (16), a laser receiver (23) is fixedly mounted on the top of the detection disk (22), and the laser emitted by the laser transmitter (10) is received by the laser receiver (23).

8. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 7 is characterized in that: A limiting sleeve (24) is fixedly mounted at the bottom center of the detection disk (22); a rotating shaft (25) is rotatably connected to the inner wall of the limiting sleeve (24) via a bearing; a driven gear (26) is fixedly mounted on the top arc surface of the rotating shaft (25); a rotating motor (27) and an L-shaped limiting plate (28) are fixedly mounted on one side of the bottom end of the detection disk (22); a gear shaft (29) is fixedly mounted on the output end of the rotating motor (27) via a coupling; a driving gear (30) is fixedly mounted on the bottom end of the gear shaft (29); the gear teeth of the driving gear (30) mesh with the tooth grooves of the driven gear (26).

9. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 8, characterized in that: A fixed connecting ring (31) is fixedly installed at the bottom end of the L-shaped limiting plate (28), and the inner wall of the fixed connecting ring (31) is rotatably connected to the arc surface of the bottom end of the rotating shaft (25) through a bearing. The arc surface of the fixed connecting ring (31) is hinged with a first connecting rod (32) through a pin shaft, and a plurality of the first connecting rods (32) are distributed in a circular array with the axis of the rotating shaft (25) as the center.

10. The method for reinforcing highway roadbed with prefabricated soil piles without silt excavation and transportation according to claim 9, characterized in that: The circular arc surface of the rotating shaft (25) is threadedly connected to a moving ring (33), and the circular arc surface of the moving ring (33) is hinged to a second connecting rod (34) via a pin shaft. One end of the first connecting rod (32) and one end of the second connecting rod (34) are hinged to a clamping arc plate (35) via a pin shaft, and the surfaces of multiple clamping arc plates (35) are in contact with the inner wall of the bottom circular arc of the detection mounting groove (2).

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