A method for processing a measure pile for underwater revetment of a wharf

Abstract

A kind of wharf underwater revetment measure pile processing method, it is characterized by: including the following steps: step one. Material preparation;Step two, female buckle guide slot processing;Step three, inner lining steel sleeve and pile body connection;Step four, male and female buckle production;Step five, lug production: step six, bolt telescopic controller installation.The method is simple, construction is convenient, equipment cost is low, in addition to limited tooling design, can use existing equipment to complete manufacturing, welding equipment, cutting equipment, movable main, passive roller frame used are common equipment of large-scale equipment manufacturing enterprises or can be put into production after slight modification, can greatly shorten equipment preparation period, reduce production cost.

Description

Technical Field

[0001] This invention relates to a slope protection technology, particularly a manufacturing technology for equipment used in the maintenance of deep-water wharves, specifically a method for processing underwater revetment piles for wharves. Background Technology

[0002] As is well known, during the construction of various cargo terminals, in order to prevent the loss of underwater sand and soil, a row of piles is driven around the terminal for sand and soil protection. Initially, the driven piles are sufficient to protect the underwater sand and soil. Figure 1 As shown. However, with long-term transportation operations, the sand at the bottom of the wharf is gradually carried away, reducing the amount of sand. This leads to a significant reduction in the depth of the engineering piles driven into the ground during construction, affecting the stability of the engineering piles. The stability of the engineering piles will affect the stability and safety of the wharf, which may cause the wharf to collapse and be scrapped, resulting in serious economic losses and damage to equipment and personnel.

[0003] Currently, with the increasing service life of wharves and the lack of corresponding maintenance measures, the safety of wharf foundations is becoming increasingly serious, necessitating appropriate measures. However, due to the greater depth of deep-water wharves, it is impossible to directly drive engineering piles into the foundation. A combination of temporary and permanent piles must be used, first driving the engineering piles into the underwater foundation. Figure 2 As shown, the protective piles are then separated from the project. Therefore, the design and manufacture of protective piles are the foundation for ensuring the normal progress of revetment construction. Summary of the Invention

[0004] The purpose of this invention is to address the urgent need for designing and manufacturing reinforcement piles for the underwater revetment of existing old wharves, and to invent a method for processing reinforcement piles for underwater wharf revetments.

[0005] The technical solution of this invention is:

[0006] A method for processing underwater revetment piles for wharves, characterized by the following steps:

[0007] Step 1. Material preparation; First, prepare materials according to the structural and dimensional requirements of the pile, including the long straight seam steel pipe 1 as the pile body, the short straight seam steel pipe 6 as the inner steel sleeve, the two small round steel pipes as male and female couplings, the reinforcing rib plate 3 as the reinforcing support, and the reinforcing round steel 5 as the reinforcing rib. The inner diameter of the long straight seam steel pipe 1 matches the outer diameter of the short straight seam steel pipe 6. One of the two small round steel pipes is not processed and is directly used as the steel pipe guide post 4, and the other is processed to form a steel pipe guide sleeve 2 with an opening.

[0008] Step 2, Machining of the female buckle guide groove: First, place the steel pipe guide sleeve 2, which is the raw material for the female buckle, on the tooling table 7 with a V-groove and clamp it. Then, use a CNC plasma double-head cutting machine 8 to cut it and process the guide groove along the axial direction on the steel pipe guide sleeve 2, which is the female buckle.

[0009] Step 3: Connecting the inner steel sleeve to the pile body; First, place both ends of the long straight seam steel pipe 1, which serves as the pile body, on the first movable active roller frame 9 and the movable passive roller frame 10, respectively. Then, insert one end of the short straight seam steel pipe 6, which serves as the inner steel sleeve, into the long straight seam steel pipe 1 to the set position. Finally, start the gantry CNC welding robot 11 to weld the exposed joint between the two, and start the internal CNC welding equipment to weld the internal joint between the two. The rotation of the first movable active roller frame 9 causes the long straight seam steel pipe 1 to rotate synchronously, completing the welding of the two circumferential seams, thereby connecting the inner steel sleeve and the pile body into one body to obtain the main body of the measure pile. The pin holes evenly distributed on the short straight seam steel pipe 6 are completed by machining before welding with the long straight seam steel pipe, or after welding, or after all processes are completed.

[0010] Step 4: Fabrication of Male and Female Fasteners; First, lift the main body of the temporary pile and place it on the welding fixture. Then, lift the steel pipe guide sleeve 2 with the machined open guide groove and place it on the long straight seam steel pipe 1, adjusting its relative position. Spot weld the two tangent points on both sides. Second, rotate the main body of the temporary pile 180° using the second movable active roller frame 16, lift the steel pipe guide column 4 and place it on the long straight seam steel pipe 1, adjusting its relative position. Spot weld the two tangent points on both sides. Third, drive the second movable active roller frame 16 to rotate the main pile of the temporary pile 90°, so that... Under CO2 protection, the gantry CNC welding robot 11 performs continuous full-length welding of the steel pipe guide column 4 and steel pipe guide sleeve 2 at the tangent point to the long straight seam steel pipe 1, with a weld penetration depth > 8mm. After welding, the weld is inspected for quality before proceeding to the next step. Fourth, the second movable active roller frame 16 is driven again to rotate the main body of the measure pile 180°. Under CO2 protection, the gantry CNC welding robot 11 performs continuous full-length welding of the other side of the steel pipe guide column 4 and steel pipe guide sleeve 2 at the tangent point to the long straight seam steel pipe 1, with a weld penetration depth > 8mm. After welding, the weld is inspected for quality. The next step after welding the weld seam is qualified; Fifth, drive the second movable active roller frame 16 to rotate the main body of the measure pile by 90°, and place the steel pipe guide column and the long straight seam steel pipe 1 with reinforcing round steel 5 on both sides of the tangent point, and adjust the relative position for positioning and spot welding; Sixth, drive the second movable active roller frame 16 to rotate the main body of the measure pile by 180°, and place the open steel pipe guide sleeve 2 and the long straight seam steel pipe 1 with supporting reinforcing plates 3 on both sides of the tangent point, and adjust the relative position for positioning and spot welding; Seventh, drive the second movable active roller frame 16 to rotate the main body of the measure pile by 90°. Using a gantry CNC welding robot 11 under CO2 protection, one side of the reinforcing rib round steel 5 and reinforcing rib plate 3 is continuously welded through the entire length, with a penetration depth > 8mm. After welding, the weld is inspected for compliance before proceeding to the next step. Eighth, the second movable active roller frame 16 is driven to rotate the main pile of the measure pile 180°. Using a gantry CNC welding robot 11 under CO2 protection, the tangent of the reinforcing rib round steel 5 and reinforcing rib plate 3 to the long straight seam steel pipe 1 is continuously welded through the entire length, with a penetration depth > 8mm. After welding, the weld is inspected for compliance before proceeding to the next step.

[0011] Step 4, Lifting lug fabrication: Position the lifting lugs according to the lifting point settings of the temporary piles, adjust their relative positions, spot weld them, and complete the welding.

[0012] Step 5: Install the pin telescopic controller; Position the prepared pin telescopic controller according to the connection requirements of the engineering pile and the subgrade pile, adjust the relative position, and weld it to the inner steel sleeve. Align the pin of the pin telescopic controller with the pin hole on the inner steel sleeve. After the hydraulic system is debugged and qualified, it is ready.

[0013] After inserting one end of the short straight seam steel pipe 6, which serves as the inner steel sleeve, into the long straight seam steel pipe 1, it is first spot-welded manually to prevent displacement.

[0014] When making the female buckle, first lift the main body of the measure pile and place it on the welding fixture. Then lift the steel pipe guide sleeve 2 with the open guide groove processed on it and place it on the main body of the measure pile. Adjust the relative position and spot weld the two tangent points of the circles on both sides. The weld leg size is hf=6mm and the effective weld length is L=100mm. Weld one every 2m. Use CO2 shielded welding equipment to weld the seam.

[0015] When making the male buckle, the steel pipe guide column 4 is lifted and placed on the main body of the measure pile and its relative position is adjusted. The two tangent points of the two circles are positioned and tack welded on both sides. The weld leg size is hf=6mm and the effective weld length is L=100mm. Weld one every 2m and use CO2 shielded welding equipment for welding.

[0016] The welding fixture consists of a fixed bracket and a second movable active roller frame 16. The fixed bracket includes an in-tube support roller turntable 13, which is mounted on one end of a support shaft. A block brake 17 is mounted on the other end of the support shaft. The block brake 17 is controlled by a brake assembly. The support shaft is mounted on a movable bracket 14 via bearings. The movable bracket 14 is mounted on a fixed seat 15 and connected to a first hydraulic cylinder 18 that drives its movement. The first hydraulic cylinder 18 is also mounted on the fixed seat 15. One end of the main body of the measure pile is supported on the in-tube support roller turntable 13, and the other end is supported on the second movable active roller frame 16. The second movable active roller frame 16 moves along the guide rail and can also drive the main body of the measure pile supported on it to rotate.

[0017] When driving the second movable active roller frame 16, the block brake 17 should be released.

[0018] The pin telescopic controller includes a pin 101, which is inserted into a pin hole 109 on the inner steel sleeve. The pin 101 is connected to the piston rod of the second hydraulic cylinder 102. The second hydraulic cylinder 102 is mounted on a fixed plate 104 by bolts 105. The fixed plate is connected to a reinforcing steel plate 103, which is mounted on an inner circular plate 106. The hydraulic control system is mounted on the inner circular plate 106. One end of the inner steel sleeve is fixedly installed in the pile, and the other end extends out of the pile. The pin hole is located on the end of the inner steel sleeve that extends out of the pile.

[0019] The beneficial effects of this invention are:

[0020] This invention, through meticulous design and comprehensive planning, effectively solves the challenges of processing temporary concrete piles. It boasts advantages such as convenient and reliable operation and high safety.

[0021] The method of this invention is simple, easy to construct, and has low equipment cost. Except for limited tooling design, it can be manufactured using existing equipment. The welding equipment, cutting equipment, and movable active and passive roller frames used are common equipment in large equipment manufacturing enterprises or can be put into production with slight modifications. This can greatly shorten the equipment preparation cycle and reduce production costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an existing underwater pile foundation revetment.

[0023] Figure 2 This is a schematic diagram of the underwater pile foundation construction of the present invention.

[0024] Figure 3 This is a front view structural diagram of the pile used in this invention.

[0025] Figure 4 This is a top view of the pile used in this invention.

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure and dimensions of the material prepared in the embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the female buckle opening processing and clamping of the present invention.

[0028] Figure 7 This is a schematic diagram of the female buckle opening processing of the present invention.

[0029] Figure 8 This is a schematic diagram of the pile body of the present invention placed on the tooling table.

[0030] Figure 9 This is a schematic diagram of the connection between the pile body and the inner steel sleeve of the present invention.

[0031] Figure 10 This is a schematic diagram of the welding state of the pile body and the inner steel sleeve of the present invention.

[0032] Figure 11 This is a schematic diagram of the cross-section of the welding fixture for the pile body and the inner steel sleeve of the present invention.

[0033] Figure 12 This is a schematic diagram of the pile end clamp of the present invention.

[0034] Figure 13 This is a schematic diagram of the initial connection state between the female buckle and the pile body of the present invention.

[0035] Figure 14 This is a schematic diagram of the initial connection state between the male buckle and the pile body.

[0036] Figure 15 yes Figure 14 AA section view.

[0037] Figure 16 This is a schematic diagram of the synchronous welding of the male and female fasteners with one side of the pile body.

[0038] Figure 17 yes Figure 16 AA section view.

[0039] Figure 18 This is a schematic diagram of the synchronous welding of the male and female fasteners with the other side of the pile body.

[0040] Figure 19 yes Figure 18 AA section view.

[0041] Figure 20 This is a schematic diagram of the male threaded reinforcing round steel connection of the present invention.

[0042] Figure 21 yes Figure 20 AA sectional view.

[0043] Figure 22 This is a schematic diagram of the connection of the female buckle reinforcing rib plate of the present invention.

[0044] Figure 23 yes Figure 22 AA sectional view.

[0045] Figure 24 This is a schematic diagram showing the welding state of one side of the male buckle reinforcing round steel and the female buckle reinforcing rib plate of the present invention with the pile body.

[0046] Figure 25 yes Figure 24 AA sectional view.

[0047] Figure 26 This is a schematic diagram showing the welding state of the male buckle reinforcing round steel and the female buckle reinforcing rib plate of the present invention to the pile body.

[0048] Figure 27 yes Figure 26 AA sectional view.

[0049] Figure 28 This is a diagram showing the installation location of the lifting lugs.

[0050] Figure 29 yes Figure 28 AA sectional view.

[0051] Figure 30 This is a schematic diagram of the structure of the pin telescopic controller according to an embodiment of the present invention. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0053] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0054] like Figure 3-30 As shown.

[0055] A method for fabricating underwater revetment piles for wharves, wherein the front view structure of the piles is as follows: Figure 3 As shown, the top view structure is as follows: Figure 4 As shown, the specific steps include:

[0056] Step 1. Material Preparation; First, prepare materials according to the structural and dimensional requirements of the pile, including the long straight seam steel pipe 1 as the pile body, the short straight seam steel pipe 6 as the inner steel sleeve, two small round steel pipes as male and female couplings, and reinforcing rib plates 3 and reinforcing round steel bars 5, which also serve as reinforcing ribs. The inner diameter of the long straight seam steel pipe 1 matches the outer diameter of the short straight seam steel pipe 6. One of the two small round steel pipes is used directly as a steel pipe guide post 4 without processing, and the other is processed to form a steel pipe guide sleeve 2 with an opening; Figure 5 Show;

[0057] Step 2, Machining of the female buckle guide groove: First, place the steel pipe guide sleeve 2, which is the raw material for the female buckle, on the tooling table 7 with a V-groove and clamp it (clamping mechanism not shown in the figure). Then, use a CNC plasma double-head cutting machine 8 to cut the guide groove along the axial direction on the steel pipe guide sleeve 2, which is the female buckle.

[0058] Step 3: Connect the inner steel sleeve to the pile body; first, place both ends of the long straight seam steel pipe 1, which serves as the pile body, on the first movable active roller frame 9 and the movable passive roller frame 10 respectively (e.g., Figure 8 Then, one end of the short straight seam steel pipe 6, which serves as the inner steel sleeve, is inserted into the long straight seam steel pipe 1 to the set position (e.g., Figure 9 Finally, the gantry CNC welding robot 11 is activated to weld the exposed joints of the two parts, and the internal CNC welding equipment is activated to weld the internal joints of the two parts (such as...). Figure 10 Welding condition (e.g.) Figure 11The long straight seam steel pipe 1 rotates synchronously through the rotation of the first movable active roller frame 9, completing the welding of the two circumferential seams and thus connecting the inner steel sleeve with the pile body to form the main body of the measure pile; the pin holes evenly distributed on the short straight seam steel pipe 6 are completed by machining before welding with the long straight seam steel pipe, or after welding, or after all processes are completed; in specific manufacturing, after inserting one end of the short straight seam steel pipe 6, which serves as the inner steel sleeve, into the long straight seam steel pipe 1, manual spot welding can be performed first to prevent displacement.

[0059] Step 4: Fabrication of male and female fasteners; First, lift the main body of the temporary pile and place it on the welding fixture, such as... Figure 12 The device consists of a fixed bracket and a second movable active roller frame 16 (same as in the prior art). The fixed bracket includes two in-tube support roller turntables 13, each of which is mounted on one end of a corresponding support shaft 20. A block brake 17 is mounted on the other end of the support shaft. The block brake 17 is controlled by a brake assembly. The support shaft is mounted on a movable bracket 14 via bearings. The movable bracket 14 is mounted on a fixed seat 15 and connected to a first hydraulic cylinder 18 that drives its movement. The first hydraulic cylinder 18 is also mounted on the fixed seat 15. One end of the main body of the measure pile is supported on the in-tube support roller turntable 13, and the other end is supported on the second movable active roller frame 16. The second movable active roller frame 16 moves along the guide rail and can also drive the main body of the measure pile supported on it to rotate. Next, the steel pipe guide sleeve 2 with the machined open guide groove is lifted and placed on the long straight seam steel pipe 1, and its relative position is adjusted. Two tangent points of the two circles are tack welded on both sides. The weld leg size is hf=6mm, and the effective weld length L=100mm. Welding is performed every 2m. CO2 shielded welding equipment is used for welding. Figure 13 Secondly, drive the second movable active roller frame 16 (at this time, the block brake 17 should be released, the same below) to rotate the main body of the measure pile 180°, as follows. Figure 14 , 15 First, lift the steel pipe guide column 4 and place it on the long straight seam steel pipe 1, adjusting its relative position. Then, spot weld the two tangent points on both sides, with a weld leg size of hf=6mm and an effective weld length of L=100mm. Weld one section every 2m, using CO2 shielded welding equipment. Second, drive the second movable active roller frame 16 to rotate the main pile of the measure pile by 90°. Figure 16 , 17 Using a gantry CNC welding robot 11 under CO2 protection, the steel pipe guide column 4 and steel pipe guide sleeve 2 are continuously welded to the tangent of the long straight seam steel pipe 1, with a penetration depth > 8mm. After welding, the weld is inspected for qualification before proceeding to the next step. Fourth, the second movable active roller frame 16 is driven again to rotate the main body of the measure pile 180°. Figure 18 , 19Using a gantry CNC welding robot 11 under CO2 protection, the other side of the steel pipe guide column 4 and the steel pipe guide sleeve 2 are continuously welded to the tangent of the long straight seam steel pipe 1, with a penetration depth > 8mm. After welding, the weld is inspected for qualification before proceeding to the next step; Fifth, the second movable active roller frame 16 is driven to rotate the main body of the measure pile by 90°, as shown. Figure 20 , 21 The steel pipe guide column and the long straight seam steel pipe 1 are tangent at both sides, and reinforcing round steel bars 5 are added to position and adjust their relative positions for tack welding. The weld leg size is hf=6mm, and the effective weld length is L=50mm. Welding is done every 0.5m, using CO2 shielded welding equipment. Sixth, drive the second movable active roller frame 16 to rotate the main body of the measure pile 180°. Figure 22 , 23 First, add supporting reinforcing ribs 3 to both sides of the tangent point between the open steel pipe guide sleeve 2 and the long straight seam steel pipe 1, and adjust their relative positions for tack welding. The weld leg size is hf=6mm, and the effective weld length is L=50mm. Weld one spot every 0.5m, using CO2 shielded welding equipment for welding. Seventh, drive the second movable active roller frame 16 to rotate the main body of the measure pile 90°. Figure 24 , 24 Using a gantry CNC welding robot 11, under CO2 protection, one side of the reinforcing rib round steel 5 and reinforcing rib plate 3 is continuously welded with a penetration depth > 8mm. After welding, the weld is inspected for qualification before proceeding to the next step; Eighth, the second movable active roller frame 16 is driven to rotate the main pile of the measure pile 180°, as... Figure 26 , 27 Using a gantry CNC welding robot 11, under CO2 protection, the reinforcing round steel 5, reinforcing plate 3 and long straight seam steel pipe 1 are continuously welded through the entire length with a penetration depth of >8mm. After the welding is completed, the weld is inspected for qualification and the next step is to proceed.

[0060] Step 5, Lifting Lug Fabrication: Position the lifting lugs according to the lifting point settings of the temporary piles, adjust their relative positions, spot weld them, and complete the welding process. Figure 28 , 29 As shown; the weld leg size for spot welding is hf=6mm, the effective weld length is L=10mm, one spot is welded every 0.2m, and CO2 shielded welding equipment is used for welding; continuous penetration welding is performed, the weld leg size is hf=25mm, after welding is completed, the weld is inspected for qualification before proceeding to the next step;

[0061] Step 6: Install the pin telescopic controller; Position the prepared pin telescopic controller according to the connection requirements of the engineering pile and the subgrade pile, adjust the relative position, and weld it to the inner steel sleeve. Align the pin of the pin telescopic controller with the pin hole on the inner steel sleeve. After the hydraulic system is debugged and qualified, it is ready. Figure 30 This is a schematic diagram of a pin telescopic controller structure in this embodiment. It includes a pin 101, which is inserted into a pin hole 109 on the inner steel sleeve. The pin 101 is connected to the piston rod of the second hydraulic cylinder 102. The second hydraulic cylinder 102 is mounted on a fixed plate 104 by bolts 105. The fixed plate is connected to a reinforcing steel plate 103, which is mounted on an inner circular plate 106. The hydraulic control system is mounted on the inner circular plate 106. One end of the inner steel sleeve is fixedly installed in the pile, and the other end extends out of the pile. The pin hole is located on the end of the inner steel sleeve that extends out of the pile.

[0062] In practice, the welding fixtures and pin telescopic controllers of this embodiment can also be designed and manufactured independently using existing equipment according to their own characteristics to meet processing needs.

[0063] As is common knowledge, in specific implementation, when driving the second movable active roller frame 16, the block brake 17 should be released. The structure and control mechanism of the block brake 17 can be designed and manufactured by referring to relevant brakes. The most common type is a spring brake pad. Pressing down the spring brake pad makes it contact the brake block, so that the brake block cannot rotate.

[0064] The above embodiments are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and equivalent substitutions without departing from the principle of the present invention. All such improvements and equivalent substitutions to the claims of the present invention fall within the protection scope of the present invention.

[0065] All parts not covered in this invention are the same as or can be implemented using existing technologies.

Claims

1. A method for processing underwater revetment piles for wharves, characterized in that: Includes the following steps: Step 1. Material preparation; First, prepare materials according to the structural and dimensional requirements of the pile, including a long straight seam steel pipe (1) as the pile body, a short straight seam steel pipe (6) as the inner steel sleeve, two small round steel pipes as male and female couplings, a reinforcing plate (3) as the reinforcing support, and a reinforcing round steel (5) as the reinforcing rib. The inner diameter of the long straight seam steel pipe (1) matches the outer diameter of the short straight seam steel pipe (6). One of the two small round steel pipes is not processed and is directly used as a steel pipe guide post (4). The other is processed to form a steel pipe guide sleeve (2) with an opening. Step 2, Machining of the guide groove for the female buckle: First, place the steel pipe guide sleeve (2) which is the raw material for the female buckle on the tooling table (7) with a V-groove and clamp it. Then, use a CNC plasma double-head cutting machine (8) to cut it and process the guide groove along the axial direction on the steel pipe guide sleeve (2) which is the female buckle. Step 3: Connecting the inner steel sleeve to the pile body; First, place the two ends of the long straight seam steel pipe (1) which serves as the pile body on the first movable active roller frame (9) and the movable passive roller frame (10) respectively. Then, insert one end of the short straight seam steel pipe (6) which serves as the inner steel sleeve into the long straight seam steel pipe (1) to the set position. Finally, start the gantry CNC welding robot (11) to weld the exposed joint of the two. Start the internal CNC welding equipment to weld the internal joint of the two. The long straight seam steel pipe (1) is rotated synchronously by the rotation of the first movable active roller frame (9) to complete the welding of the two circumferential seams, thereby connecting the inner steel sleeve and the pile body into one body to obtain the main body of the measure pile. The pin holes evenly distributed on the short straight seam steel pipe (6) are completed by machining before welding with the long straight seam steel pipe, or after welding, or after all processes are completed. Step 4: Making the male and female fasteners; First, lift the main body of the measure pile and place it on the welding fixture. Then, lift the steel pipe guide sleeve (2) with the open guide groove and place it on the long straight seam steel pipe (1) and adjust its relative position. Spot weld the two tangent points on both sides. Second, rotate the main body of the measure pile 180° using the second movable active roller frame (16), lift the steel pipe guide column (4) and place it on the long straight seam steel pipe (1) and adjust its relative position. Spot weld the two tangent points on both sides. Third, drive the second movable active roller frame (16) to rotate the main body of the measure pile 90° and use a gantry crane. Under CO2 protection, the CNC welding robot (11) performs continuous full penetration welding at the tangent point between the steel pipe guide column (4) and the steel pipe guide sleeve (2) and the long straight seam steel pipe (1), with a penetration depth > 8mm. After welding, the weld is inspected for qualification before proceeding to the next step. Fourth, the second movable active roller frame (16) is driven again to rotate the main body of the measure pile 180°. Under CO2 protection, the gantry CNC welding robot (11) performs continuous full penetration welding at the tangent point between the steel pipe guide column (4) and the steel pipe guide sleeve (2) and the long straight seam steel pipe (1), with a penetration depth > 8mm. After welding, the weld is inspected for qualification before proceeding to the next step. The next step after welding the joint is as follows: Fifth, drive the second movable active roller frame (16) to rotate the main body of the measure pile by 90°, and place the reinforcing round steel (5) on both sides of the tangent point between the steel pipe guide column and the long straight seam steel pipe (1) and adjust the relative position for spot welding; Sixth, drive the second movable active roller frame (16) to rotate the main body of the measure pile by 180°, and place the supporting reinforcing plates (3) on both sides of the tangent point between the open steel pipe guide sleeve (2) and the long straight seam steel pipe (1) and adjust the relative position for spot welding; Seventh, drive the second movable active roller frame (16) to rotate the main body of the measure pile by 90°. Using a gantry CNC welding robot (11) under CO2 protection, one side of the reinforcing rib round steel (5) and reinforcing rib plate (3) is continuously welded through the entire length with a penetration depth of >8mm. After welding, the weld is inspected to ensure it is qualified for the next step. Eighth, drive the second movable active roller frame (16) to rotate the main pile of the measure pile by 180°. Using a gantry CNC welding robot (11) under CO2 protection, the reinforcing rib round steel (5) and reinforcing rib plate (3) are continuously welded through the entire length at the tangent point to the long straight seam steel pipe (1) with a penetration depth of >8mm. After welding, the weld is inspected to ensure it is qualified for the next step. Step 5, Lifting lug fabrication: Position the lifting lugs according to the lifting points of the temporary piles, adjust their relative positions, spot weld them, and complete the welding. Step 6: Install the pin telescopic controller; Position the prepared pin telescopic controller according to the connection requirements of the engineering pile and the subgrade pile, adjust the relative position, and weld it to the inner steel sleeve. Align the pin of the pin telescopic controller with the pin hole on the inner steel sleeve. After the hydraulic system is debugged and qualified, it is ready.

2. The method according to claim 1, characterized in that: After inserting one end of the short straight seam steel pipe (6), which serves as the inner steel sleeve, into the long straight seam steel pipe (1), it is first spot welded by hand to prevent displacement.

3. The method according to claim 1, characterized in that: When making the mother buckle, first lift the main body of the measure pile and place it on the welding fixture, then lift the steel pipe guide sleeve (2) with the open guide groove processed on the main body of the measure pile and place it in place and adjust the relative position. The two tangent points of the circles are positioned and spot welded on both sides. The weld leg size is: hf=6mm, the effective length of the weld is L=100mm, and one weld is made every 2m. CO2 shielded welding equipment is used for welding.

4. The method according to claim 1, characterized in that: When making the male buckle, the steel pipe guide column (4) is lifted and placed on the main body of the measure pile and the relative position is adjusted. The two circles are tangent and the two sides are positioned and spot welded. The weld leg size is hf=6mm and the effective length of the weld is L=100mm. Weld one every 2m and use CO2 shielded welding equipment to weld the weld.

5. The method according to claim 1, characterized in that: The welding fixture consists of a fixed bracket and a second movable active roller frame (16). The fixed bracket includes an in-tube support roller turntable (13), which is mounted on one end of a support shaft. A block brake (17) is mounted on the other end of the support shaft. The block brake (17) is controlled by a brake assembly. The support shaft is mounted on a movable bracket (14) via a bearing. The movable bracket (14) is mounted on a fixed seat (15) and connected to a first hydraulic cylinder (18) that drives its movement. The first hydraulic cylinder (18) is also mounted on the fixed seat (15). One end of the main body of the measure pile is supported on the in-tube support roller turntable (13), and the other end is supported on the second movable active roller frame (16). The second movable active roller frame (16) moves along the guide rail and can also drive the main body of the measure pile supported on it to rotate.

6. The method according to claim 1, characterized in that: When driving the second movable active roller frame (16), the block brake (17) should be released.

7. The method according to claim 1, characterized in that: The aforementioned pin telescopic controller includes a pin (101), which is inserted into a pin hole (109) on the inner steel sleeve. The pin (101) is connected to the piston rod of the second hydraulic cylinder (102). The second hydraulic cylinder (102) is mounted on a fixed plate (104) by bolts (105). The fixed plate is connected to a reinforcing steel plate (103). The reinforcing steel plate (103) is mounted on an inner circular plate (106). The hydraulic control system is mounted on the inner circular plate (106). One end of the inner steel sleeve is fixedly installed in the measure pile, and the other end extends out of the measure pile. The pin hole is located on the end of the inner steel sleeve that extends out of the measure pile.

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