A supporting method based on an assembled retaining plate steel structure of an old road surface

Abstract

This invention belongs to the field of building construction technology, specifically a support method for prefabricated retaining wall steel structure based on old road surfaces. The support method is as follows: Step 6, connect the connecting mechanism on the retaining wall to the precast pile head installed on the pile foundation. This support method for prefabricated retaining wall steel structure based on old road surfaces, by setting a connecting mechanism, facilitates the fixed connection between the retaining wall and the precast pile head, and also facilitates disassembly. By transporting hydraulic oil from the inlet pipe to the inlet port and injecting it into the piston cylinder, the hydraulic oil uses liquid pressure energy to drive the piston rod to move outward, and the hydraulic oil originally present in the piston cylinder is discharged through the outlet pipe, so that the piston rod is inserted into the groove. Then, the rotation of the servo motor output shaft drives the screw to rotate. The rotation of the screw drives the threaded block to move down along the inner wall of the fixed housing, thereby driving the locking post to move down into the locking groove, thus realizing the locking post and the locking groove.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a support method for prefabricated retaining wall steel structure based on old road surfaces. Background Technology

[0002] When constructing on old ground, retaining boards are needed to hold back the soil in the excavated foundation pit where piles are driven into the ground, thereby improving the stability of the pile foundation.

[0003] However, the current retaining wall and pile foundation are fixed together by rebar anchoring. Rebar anchoring involves drilling holes in the pile foundation, inserting anchor bolts of the retaining wall into the holes, and using modified epoxy resin adhesive to fix the anchor bolts to the pile foundation. This makes the connection between the retaining wall and the pile foundation very stable. However, this method is also complicated and troublesome in terms of setting up and dismantling the retaining wall, which makes it inconvenient to dismantle later, easily affects work efficiency, and requires multiple people to operate, thus reducing construction efficiency. Summary of the Invention

[0004] To address the technical problem that existing retaining walls and pile foundations are connected by rebar, which is inconvenient for later removal and thus affects construction efficiency, this invention proposes a support method for prefabricated retaining wall steel reinforcement structures based on old road surfaces.

[0005] This invention proposes a support method for prefabricated retaining wall steel reinforcement structures based on old road surfaces. The support method is as follows:

[0006] Step 1: Drill holes for positioning and install pile foundations;

[0007] Step 2: Clean the bottom of the hole to remove impurities, providing a clean foundation for grouting and connection of the pile foundation;

[0008] Step 3: Install the pre-fabricated steel cage into the drilled hole;

[0009] Step 4: Insert a precast pile head above the pile foundation that protrudes above the ground, and pre-embed a sleeve in the precast pile head that matches the steel bars on the steel cage in the pile foundation.

[0010] Step 5: The clamping mechanism, which is arranged in a linear array on the sleeve, clamps the surface of the reinforcing bar;

[0011] Step 6: Connect the connecting mechanism on the retaining plate to the precast pile head installed on the pile foundation;

[0012] Step 7: Pour concrete into the pile foundation through the pouring hole opened above the precast pile head;

[0013] Step 8: After the pouring is completed, the retaining plate and precast pile head are disassembled by the connecting mechanism and the clamping mechanism respectively, and then the steel bars extending above the pile foundation are cut off.

[0014] The clamping mechanism includes support plates symmetrically distributed on the surface of the sleeve. A rotating shaft is installed between two support plates via a bearing. A servo motor is fixedly installed on the upper surface of one of the support plates. One end of the output shaft of the servo motor is fixedly connected to one end of the rotating shaft. The surface of the rotating shaft is provided with drive gears arranged in a linear array.

[0015] Through the above technical solution, the rotation of the servo motor output shaft drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the multiple active gears distributed on it to rotate synchronously.

[0016] Preferably, the inner wall of the sleeve is provided with connecting sleeves arranged in a linear array, and the surface of the connecting sleeve is equipped with a driven gear through a bearing, and the outer surface of the driven gear extends out of the sleeve and meshes with the outer surface of the driving gear.

[0017] Through the above technical solution, the rotation of the driving gear drives the rotation of the driven gear that meshes with it.

[0018] Preferably, the upper and lower surfaces of the driven gear are provided with a track groove in a circular array, and a sliding column is slidably engaged with the inner wall of the track groove, with a locking block fixedly sleeved at one end of the sliding column.

[0019] Through the above technical solution, the rotation of the driven gear drives the sliding column to move through the track groove, and the movement of the sliding column drives the movement of the locking block.

[0020] Preferably, the inner surface of the connecting sleeve is provided with a sliding groove in a ring array, and the surface of the locking block is slidably engaged with the inner wall of the sliding groove.

[0021] Through the above technical solution, the movement of the card block causes its surface to expand and contract along the inner wall of the slide groove.

[0022] Preferably, the connecting mechanism includes an installation housing embedded in the retaining plate, a piston cylinder is fixedly installed on the inner wall of the installation housing, a piston rod is slidably connected to the inner wall of the piston cylinder, a groove is formed on the surface of the precast pile head, and the surface of the installation housing is slidably connected to the inner wall of the groove.

[0023] The above technical solution involves aligning one end of the housing with the groove and inserting it to position the retaining plate for installation.

[0024] Preferably, the inner wall of the piston cylinder has symmetrically distributed oil inlets, and the inner wall of the oil inlets is fixedly connected to an oil inlet pipe. One end of the oil inlet pipe extends to the outside of the baffle plate. The inner wall of the piston cylinder has symmetrically distributed oil outlet pipes, and one end of the oil outlet pipe extends to the outside of the baffle plate.

[0025] The above technical solution transports hydraulic oil through the inlet pipe and enters the piston cylinder through the inlet port, allowing the hydraulic oil to drive the piston rod to move outward using liquid pressure energy. This causes the hydraulic oil that was originally in the piston cylinder to be discharged through the outlet pipe, thereby allowing the piston rod to enter the groove.

[0026] Preferably, a fixed housing is fixedly installed inside the piston rod, the lower end of the fixed housing extends outside the piston rod, a servo motor is fixedly installed on the inner top wall of the fixed housing, a screw is fixedly sleeved on one end of the output shaft of the servo motor, and the upper end of the screw is installed on the inner wall of the fixed housing through a bearing.

[0027] Through the above technical solution, the rotation of the servo motor output shaft drives the screw to rotate.

[0028] Preferably, the screw has a threaded block threaded onto its surface, and the surface of the threaded block is slidably engaged with the inner wall of the fixed housing.

[0029] Through the above technical solution, the rotation of the screw drives the threaded block to move up and down along the inner wall of the fixed housing.

[0030] Preferably, a hollow locking post is fixedly connected to the lower surface of the threaded block, and a locking groove is formed on the inner wall of the groove, with the surface of the locking post slidingly engaging with the inner wall of the locking groove.

[0031] Through the above technical solution, the movement of the threaded block drives the movement of the locking pin, causing the locking pin to move along the inner wall of the locking groove.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. By setting up precast pile heads and pre-embedding sleeves that match the pile foundation reinforcement on the precast pile heads, it is convenient to position the precast pile heads and pile foundations by connecting the sleeves to the reinforcements. At the same time, it is convenient to separate the precast pile heads from the pile foundations. After the pile foundation is poured, the precast pile heads can be directly pulled out and transferred to another pile foundation for use, achieving the effect of easy disassembly and reuse of precast pile heads.

[0034] 2. By setting up a clamping mechanism, the clamping blocks inside the sleeve can easily clamp the surface of the reinforcing bar, and it is also easy to disassemble. The rotation of the servo motor output shaft drives the rotating shaft to rotate. The rotation of the rotating shaft drives multiple active gears distributed on the rotating shaft to rotate synchronously. The rotation of the active gear drives the driven gears that mesh with it to rotate. The rotation of the driven gear drives the sliding column to move through the track groove. The movement of the sliding column drives the clamping blocks to move inward along the inner wall of the sliding groove, so that multiple clamping blocks come together to clamp the surface of the reinforcing bar. In this way, the precast pile head is fixed to the pile foundation by clamping the reinforcing bar, which facilitates subsequent disassembly and assembly and improves work efficiency.

[0035] 3. By setting up a connecting mechanism, it is easy to fix the retaining plate and the precast pile head together, and it is also easy to disassemble. By transporting hydraulic oil from the oil inlet pipe to the oil inlet and injecting it into the piston cylinder, the hydraulic oil uses liquid pressure energy to drive the piston rod to move outward, and the hydraulic oil originally in the piston cylinder is discharged through the oil outlet pipe, so that the piston rod enters the groove. Then, the rotation of the servo motor output shaft drives the screw to rotate. The rotation of the screw drives the threaded block to move down along the inner wall of the fixed housing, thereby driving the locking column to move down into the locking groove, thus realizing the locking column and the locking groove, achieving the effect of connecting the retaining plate and the precast pile head together, which facilitates later disassembly and assembly, improves construction efficiency, and helps to solve the technical problems mentioned in the background technology. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a support method for prefabricated retaining wall steel structure based on old road surfaces proposed in this invention.

[0037] Figure 2 This is a three-dimensional view of the precast pile head structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0038] Figure 3 This is a three-dimensional view of the groove structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0039] Figure 4 This is a three-dimensional view of the rotating shaft structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0040] Figure 5 This is a three-dimensional view of the sleeve structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0041] Figure 6 This is a perspective view of the driven gear structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0042] Figure 7 This is a three-dimensional view of the block structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0043] Figure 8 This is a three-dimensional view of the trajectory groove structure of a support method for prefabricated retaining wall steel structure based on old road surface proposed in this invention.

[0044] Figure 9 This is a perspective view of the connecting sleeve structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0045] Figure 10 This is a three-dimensional view of the retaining plate structure of the prefabricated retaining plate steel structure support method based on old road surfaces proposed in this invention.

[0046] Figure 11 This is a perspective view of the installation shell structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0047] Figure 12 This is a three-dimensional view of the piston cylinder structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0048] Figure 13 This is a perspective view of the piston rod structure of a prefabricated retaining wall steel structure support method based on old road surfaces proposed in this invention.

[0049] Figure 14 This is a three-dimensional view of the fixed shell structure of a support method for a prefabricated retaining wall steel structure based on old road surfaces proposed in this invention.

[0050] Figure 15 This is a three-dimensional view of the screw structure of a prefabricated retaining wall steel reinforcement structure support method based on old road surfaces proposed in this invention.

[0051] In the diagram: 1. Pile foundation; 2. Reinforcing cage; 3. Precast pile head; 4. Sleeve; 5. Support plate; 51. Rotating shaft; 52. Servo motor; 53. Drive gear; 54. Connecting sleeve; 55. Driven gear; 56. Track groove; 57. Sliding column; 58. Locking block; 59. Sliding groove; 6. Retaining plate; 7. Mounting housing; 701. Piston cylinder; 702. Piston rod; 703. Groove; 704. Oil inlet; 705. Oil inlet pipe; 706. Oil outlet pipe; 707. Fixed housing; 708. Servo motor; 709. Screw; 710. Threaded block; 711. Locking column; 712. Locking groove. Detailed Implementation

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0053] Reference Figures 1-15 A support method for prefabricated retaining wall reinforced concrete structures based on old road surfaces, the support method being as follows:

[0054] Step 1: Drill holes for positioning and install pile 1;

[0055] Step 2: Clean the bottom of the hole to remove impurities, providing a clean foundation for the grouting and connection of pile foundation 1;

[0056] Step 3: Install the pre-fabricated steel cage 2 into the drilled hole;

[0057] Step 4: Insert the precast pile head 3 above the exposed ground of the pile foundation 1, and pre-embed the sleeve 4 in the precast pile head 3 to match the steel bars on the steel cage 2 in the pile foundation 1.

[0058] Step 5: The clamping mechanism arranged in a linear array on sleeve 4 clamps the surface of the reinforcing bar;

[0059] Step 6: Connect the connecting mechanism on the retaining plate 6 to the precast pile head 3 installed on the pile foundation 1;

[0060] Step 7: Pour concrete into the pile foundation 1 through the pouring hole opened above the precast pile head 3;

[0061] Step 8: After the pouring is completed, the retaining plate 6 and the precast pile head 3 are disassembled by the connecting mechanism and the clamping mechanism respectively, and then the steel bars extending above the pile foundation 1 are cut off.

[0062] By setting up precast pile heads 3 and pre-embedding sleeves 4 that match the reinforcing bars of pile foundation 1 on the precast pile heads 3, it is convenient to position the precast pile head 3 and pile foundation 1 by connecting the sleeves 4 and the reinforcing bars. At the same time, it is convenient to separate the precast pile head 3 from the pile foundation 1. After the pile foundation 1 is poured, the precast pile head 3 can be directly pulled out and transferred to another pile foundation 1 for use. This facilitates the disassembly and assembly of the precast pile head 3 and its reuse.

[0063] like Figures 1-9 As shown, in order to clamp the sleeve 4 to the steel bars on the steel cage 2, thereby fixing the precast pile head 3 to the pile foundation 1, a clamping mechanism is provided. The clamping mechanism includes support plates 5 symmetrically distributed on the surface of the sleeve 4. A rotating shaft 51 is installed between the two support plates 5 through a bearing. In order to drive the rotating shaft 51 to rotate, a servo motor 52 is fixedly installed on the upper surface of one of the support plates 5. One end of the output shaft of the servo motor 52 is fixedly connected to one end of the rotating shaft 51. The rotation of the output shaft of the servo motor 52 drives the rotating shaft 51 to rotate.

[0064] To simultaneously clamp the outer surface of the reinforcing bars on the reinforcing cage 2 in multiple segments, thereby better clamping the reinforcing bars through the sleeve 4, drive gears 53 are arranged in a linear array on the surface of the rotating shaft 51, and connecting sleeves 54 are arranged in a linear array on the inner wall of the sleeve 4. Driven gears 55 are mounted on the surface of the connecting sleeve 54 through bearings. To facilitate the installation of the driven gears 55, the sleeve 4 is made of sections, which are connected as one piece by the connecting sleeves 54. The outer surface of the driven gears 55 extends out of the sleeve 4 and meshes with the outer surface of the drive gears 53. The rotation of the rotating shaft 51 drives the drive gears 53 to rotate, and the rotation of the drive gears 53 drives the driven gears 55 to rotate through meshing with the driven gears 55.

[0065] In order to contact the surface of the reinforcing bar and thus clamp the reinforcing bar, and at the same time facilitate the separation of the sleeve 4 from the reinforcing bar, a track groove 56 is provided in a ring array through the upper and lower surfaces of the driven gear 55. A sliding column 57 is slidably engaged with the inner wall of the track groove 56, and a locking block 58 is fixedly sleeved at one end of the sliding column 57. At the same time, a sliding groove 59 is provided in a ring array through the inner surface of the connecting sleeve 54. The surface of the locking block 58 is slidably engaged with the inner wall of the sliding groove 59. The rotation of the driven gear 55 drives the locking column 711 to move along the inner wall of the track groove 56, and the locking block 58 is restricted by the sliding groove 59 so that it can only move synchronously inward or outward along the inner wall of the sliding groove 59, which facilitates clamping or releasing the surface of the reinforcing bar, thereby facilitating the disassembly of the precast pile head 3.

[0066] By setting a clamping mechanism, the clamping blocks 58 inside the sleeve 4 can clamp the surface of the reinforcing bar. The rotation of the output shaft of the servo motor 52 drives the rotating shaft 51 to rotate. The rotation of the rotating shaft 51 drives the multiple active gears 53 distributed on the rotating shaft 51 to rotate synchronously. The rotation of the active gears 53 drives the driven gears 55 that mesh with them to rotate. The rotation of the driven gears 55 drives the sliding column 57 to move through the track groove 56. The movement of the sliding column 57 drives the clamping blocks 58 to move inward along the inner wall of the sliding groove 59, so that the multiple clamping blocks 58 gather together to clamp the surface of the reinforcing bar. In turn, by clamping the reinforcing bar, the precast pile head 3 and the pile foundation 1 are fixed together, which facilitates the later disassembly and assembly and improves work efficiency.

[0067] like Figures 1-2 as well as Figures 10-15 As shown, in order to fix the retaining plate 6 to the precast pile head 3 and facilitate the disassembly of the retaining plate 6, the connecting mechanism includes an installation housing 7 embedded in the retaining plate 6. A piston cylinder 701 is fixedly installed on the inner wall of the installation housing 7. A piston rod 702 is slidably connected to the inner wall of the piston cylinder 701. A groove 703 is opened on the surface of the precast pile head 3. The surface of the installation housing 7 is slidably connected to the inner wall of the groove 703. By aligning one end of the installation housing 7 with the groove 703 and inserting it, the installation of the retaining plate 6 is positioned.

[0068] To drive the piston rod 702 to extend, oil inlets 704 are symmetrically distributed on the inner wall of the piston cylinder 701. An oil inlet pipe 705 is fixedly connected to the inner wall of the oil inlet 704. One end of the oil inlet pipe 705 extends to the outside of the baffle plate 6. An oil outlet pipe 706 is symmetrically distributed on the inner wall of the piston cylinder 701. One end of the oil outlet pipe 706 extends to the outside of the baffle plate 6. Hydraulic oil is transported to the oil inlet 704 through the oil inlet pipe 705, so that the hydraulic oil is introduced into the piston cylinder 701. The hydraulic oil uses the liquid pressure energy to drive the piston rod 702 to move outward, and the hydraulic oil originally present in the piston cylinder 701 is discharged through the oil outlet pipe 706.

[0069] To further facilitate the installation of the retaining plate 6 and the precast pile head 3 together, a fixed housing 707 is fixedly installed inside the piston rod 702. The lower end of the fixed housing 707 extends outside the piston rod 702, and a slot 712 is formed on the inner wall of the groove 703. To drive the connecting mechanism to engage with the slot 712, a servo motor 708 is fixedly installed on the inner top wall of the fixed housing 707. A screw 709 is fixedly sleeved at one end of the output shaft of the servo motor 708. The upper end of the screw 709 is mounted on the inner wall of the fixed housing 707 via a bearing. A threaded block 710 is threaded onto the surface of screw 709. The surface of the threaded block 710 is slidably engaged with the inner wall of the fixed housing 707. A hollow retaining post 711 is fixedly connected to the lower surface of the threaded block 710. The hollow design of the retaining post 711 avoids hindering the normal use of screw 709. The surface of the retaining post 711 is slidably engaged with the inner wall of the retaining groove 712. The rotation of the output shaft of the servo motor 708 drives the screw 709 to rotate. The rotation of the screw 709 drives the threaded block 710 to move. The movement of the threaded block 710 drives the retaining post 711 to move.

[0070] By setting a connecting mechanism, it is easy to fix the retaining plate 6 and the precast pile head 3 together, and it is also easy to disassemble. By transporting hydraulic oil from the oil inlet pipe 705 to the oil inlet 704 and injecting it into the piston cylinder 701, the hydraulic oil uses liquid pressure energy to drive the piston rod 702 to move outward, and the hydraulic oil originally present in the piston cylinder 701 is discharged through the oil outlet pipe 706, so that the piston rod 702 enters the groove 703. Then, the rotation of the output shaft of the servo motor 708 drives the screw 709 to rotate. The rotation of the screw 709 drives the threaded block 710 to move down along the inner wall of the fixed housing 707, thereby driving the locking post 711 to move down into the locking groove 712, thus realizing the locking post 711 and the locking groove 712, which facilitates the quick assembly and disassembly of the retaining plate 6 and the precast pile head 3, which is convenient for later disassembly and assembly and improves construction efficiency.

[0071] Working principle: such as Figures 1-15 As shown, in a specific embodiment of the present invention, a precast pile head 3 is inserted above the pile foundation 1 that protrudes from the ground, and the sleeve 4 on the precast pile head 3 is connected to the steel bars on the steel cage 2 until the bottom of the precast pile head 3 contacts the top of the pile foundation 1.

[0072] Then, the servo motor 52 is started. The rotation of the output shaft of the servo motor 52 drives the rotating shaft 51 to rotate. The rotation of the rotating shaft 51 drives the multiple active gears 53 distributed on it to rotate synchronously. The rotation of the active gears 53 drives the driven gears 55 that mesh with them to rotate. The rotation of the driven gears 55 drives the sliding column 57 to move through the track groove 56. The movement of the sliding column 57 drives the locking block 58 to converge inward along the inner wall of the sliding groove 59, thereby fixing the steel bars on the steel cage 2 with the locking block 58.

[0073] Then, the end of the retaining plate 6 with the housing 7 installed is aligned with the groove 703 and inserted. Hydraulic oil is transported through the oil inlet pipe 705 and enters the piston cylinder 701 through the oil inlet 704. The hydraulic oil uses liquid pressure to drive the piston rod 702 to move outward, and the hydraulic oil originally in the piston cylinder 701 is discharged through the oil outlet pipe 706, so that the piston rod 702 enters the groove 703. Then, the servo motor 708 is started. The rotation of the output shaft of the servo motor 708 drives the screw 709 to rotate. The rotation of the screw 709 drives the threaded block 710 to move down along the inner wall of the fixed housing 707. The movement of the threaded block 710 drives the locking pin 711 to move down and engage with the locking groove 712, thereby fixing the retaining plate 6 on the precast pile head 3. Concrete is poured into the pile foundation 1 through the pouring hole opened above the precast pile head 3.

[0074] After the pouring is completed, the output shafts of the drive servo motor 52 and servo motor 708 rotate in opposite directions, causing the locking block 58 to separate from the steel bars on the steel cage 2 and causing the locking column 711 to disengage from the locking groove 712. Then, the retaining plate 6 and the precast pile head 3 are pulled out in sequence. The removed retaining plate 6 and the precast pile head 3 are then used on another pile foundation 1. This not only makes it easy to remove in the later stage, but also allows them to be used on another pile foundation 1, making it easy to reuse the precast pile head 3 and the retaining plate 6.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A support method for prefabricated retaining wall reinforced concrete structures based on old road surfaces, wherein the support method is as follows: Step 1: Drilling and positioning, and placing the pile foundation (1); Step 2: Clean the bottom of the hole to remove impurities, thus providing a clean foundation for the grouting and connection of the pile foundation (1); Step 3: Install the pre-made steel cage (2) into the drilled hole; Step 4: Insert a precast pile head (3) above the ground surface of the pile foundation (1), and pre-embed a sleeve (4) in the precast pile head (3) that matches the steel bars on the steel cage (2) in the pile foundation (1). Step 5: The clamping mechanism arranged in a linear array on the sleeve (4) clamps the surface of the reinforcing bar; Step 6: Connect the connecting mechanism on the retaining plate (6) to the precast pile head (3) installed on the pile foundation (1); Step 7: Pour concrete into the pile foundation (1) through the pouring hole opened above the precast pile head (3); Step 8: After the pouring is completed, the retaining plate (6) and the precast pile head (3) are disassembled by the connecting mechanism and the clamping mechanism respectively, and then the steel bars extending above the pile foundation (1) are cut off. The clamping mechanism includes support plates (5) symmetrically distributed on the surface of the sleeve (4), and a rotating shaft (51) is installed between the two support plates (5) via a bearing. A servo motor (52) is fixedly installed on the upper surface of one of the support plates (5). One end of the output shaft of the servo motor (52) is fixedly connected to one end of the rotating shaft (51). The surface of the rotating shaft (51) is provided with drive gears (53) arranged in a linear array. The inner wall of the sleeve (4) is provided with connecting sleeves (54) arranged in a linear array. A driven gear (55) is mounted on the surface of the connecting sleeve (54) through a bearing. The outer surface of the driven gear (55) extends out of the sleeve (4) and meshes with the outer surface of the driving gear (53). The connecting mechanism includes an installation housing (7) embedded in the retaining plate (6), a piston cylinder (701) is fixedly installed on the inner wall of the installation housing (7), a piston rod (702) is slidably connected to the inner wall of the piston cylinder (701), a groove (703) is opened on the surface of the precast pile head (3), and the surface of the installation housing (7) is slidably connected to the inner wall of the groove (703). The piston cylinder (701) has symmetrically distributed oil inlets (704) on its inner wall. The inner wall of the oil inlet (704) is fixedly connected to an oil inlet pipe (705). One end of the oil inlet pipe (705) extends to the outside of the baffle plate (6). The piston cylinder (701) has symmetrically distributed oil outlet pipes (706) on its inner wall. One end of the oil outlet pipe (706) extends to the outside of the baffle plate (6). A fixed housing (707) is fixedly installed inside the piston rod (702). The lower end of the fixed housing (707) extends outside the piston rod (702). A servo motor (708) is fixedly installed on the inner top wall of the fixed housing (707). A screw (709) is fixedly sleeved on one end of the output shaft of the servo motor (708). The upper end of the screw (709) is installed on the inner wall of the fixed housing (707) through a bearing. The screw (709) has a threaded block (710) threaded onto its surface, and the surface of the threaded block (710) is slidably engaged with the inner wall of the fixed housing (707). The lower surface of the threaded block (710) is fixedly connected to a hollow locking post (711), and the inner wall of the groove (703) is provided with a locking groove (712). The surface of the locking post (711) is slidably engaged with the inner wall of the locking groove (712).

2. The supporting method of the assembled soil retaining plate reinforced structure based on the old roadbed according to claim 1, characterized in that: The driven gear (55) has a circular array of grooves (56) on its upper and lower surfaces. A sliding column (57) is slidably engaged with the inner wall of the groove (56), and a locking block (58) is fixedly sleeved on one end of the sliding column (57).

3. The supporting method of the assembled soil retaining plate reinforced structure according to claim 2, characterized in that: The inner surface of the connecting sleeve (54) is provided with a sliding groove (59) in a ring array, and the surface of the locking block (58) is slidably engaged with the inner wall of the sliding groove (59).

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