Steel pipe column butt joint equipment for ultrahigh cast-in-place box girder bridge construction and construction method

Abstract

The invention discloses steel pipe column butt-joint equipment for ultrahigh cast-in-place box girder bridge construction and a construction method, which can meet the requirements of construction site building and multi-specification steel pipe column butt-joint under complex working conditions, a hardened site is taken as a basis, an operation platform is built through four pieces of I-shaped steel which are arranged in parallel, and an elevation adjusting mechanism is arranged at the bottom to realize horizontal calibration; a triangular anti-falling support is mounted at the bottom of the I-shaped steel and is fixed with the hardened field; collinear limiting steel pipes are welded on the same side of the I-shaped steel to form a reference positioning surface, and the other side of the I-shaped steel is detachably connected with an anti-rolling structure matched with the diameter of the steel pipe; a laser distance measuring sensor is installed on the top of the limiting steel pipe and wirelessly connected with a handheld terminal to achieve real-time monitoring. During operation, one side of the to-be-butted steel pipe column is attached to the limiting steel pipe, the other side of the to-be-butted steel pipe column is fixed through the anti-rolling structure, welding is completed after gap detection and groove treatment, and accurate, safe and efficient butting is achieved.

Description

Technical Field

[0001] This invention relates to the field of highway and municipal engineering construction technology, specifically to a steel pipe column docking equipment and construction method for ultra-high cast-in-place box girder bridge construction. Background Technology

[0002] In the construction of ultra-high cast-in-place box girder bridges, the traditional steel pipe column splicing process faces multiple technical and safety constraints. In traditional construction, the steel pipe column, as the core load-bearing component of the composite support structure, has its splicing accuracy directly affecting the stability of the support system. However, the traditional splicing method has the following key problems:

[0003] I. Low controllability of docking accuracy:

[0004] (1) The positioning method is crude. Traditional docking relies on manual stringing or simple brackets for centering, which lacks a precise reference plane and fixed constraints. The coaxiality error of docking is generally ≥8mm, which can easily lead to the steel pipe column being subjected to eccentric force and poses a risk of structural instability in the long term. (2) The environmental interference has a great impact. Factors such as insufficient flatness of the construction site and wind interference will further amplify the error of manual positioning, and it is impossible to monitor and adjust in real time, making it difficult to meet the high standard construction requirements.

[0005] II. Resource waste and site constraints in traditional processes:

[0006] (1) Poor versatility and serious material waste. Traditional temporary support devices need to be customized according to the diameter and length of the steel pipe column. The connection of steel pipes of different specifications requires reprocessing of the support, resulting in steel waste and increased construction costs. (2) Large site area. Manual connection requires a spacious working space for wire pulling, adjustment and material stacking. The area occupied is more than 3 times that of the finished steel pipe column. It is difficult to adapt to site restrictions in complex working conditions (such as urban ring roads and construction next to existing roads).

[0007] III. The dual bottlenecks of construction safety and efficiency:

[0008] (1) Significant safety hazards: The steel pipe columns are heavy and lack stable fixing devices during manual connection, making them prone to rolling and displacement, which could lead to falling objects. The temporary supports have no anti-tipping design, posing a risk of overturning. (2) Low construction efficiency: Manual alignment and repeated adjustments require multiple people to work together. The connection of a single group of steel pipes takes ≥4 hours, and the connection quality depends on the skill level of the workers, resulting in poor consistency and affecting the overall construction progress.

[0009] IV. Driven by both industry standards and engineering quality:

[0010] (1) The requirements of the standards are constantly improving. According to the "Technical Specifications for Construction of Highway Bridges and Culverts", the coaxiality error of the steel pipe column connection should be ≤5mm. Traditional processes are difficult to consistently meet the standards, which can easily lead to non-compliance and rework. (2) Engineering quality and cost pressure. Ultra-high cast-in-place box girder bridges are mostly key projects. Failure of the supporting structure may cause major safety accidents. Traditional processes have a high rework rate, which delays the construction period and increases additional costs. There is an urgent need for a precise and efficient connection solution. Summary of the Invention

[0011] The purpose of this invention is to provide a steel pipe column docking equipment and construction method for the construction of ultra-high cast-in-place box girder bridges, which effectively solves the problems of large coaxiality error, poor versatility, prominent safety hazards and low construction efficiency in traditional processes. It realizes the leap from manual and extensive docking to standardized and precise docking, thereby improving construction quality, reducing safety risks, saving costs and space, and accelerating construction progress.

[0012] To achieve the above objectives, the present invention provides the following technical solution:

[0013] A steel pipe column docking device for the construction of an ultra-high cast-in-place box girder bridge includes four I-beams arranged parallel and upright on a hardened site. Each I-beam has a height adjustment mechanism installed at its bottom, and three sets of anti-tipping supports are welded at intervals to the bottom of each I-beam. Transverse connecting rods are installed at the ends of the four I-beams, which are then connected by welding to form a frame structure. A limiting steel pipe is vertically welded to each I-beam, and a laser ranging sensor is installed at the top of the limiting steel pipe. The limiting steel pipe is located on one side of the steel pipe column to be docked, and an arc-shaped anti-roll structure is provided on the other side of the steel pipe column. Ear plates are connected to both sides of the anti-roll structure. The anti-roll structure is installed at a predetermined position on the flange of the I-beam using M12 fixing bolts. A 3mm thick rubber buffer layer is pasted on the inner side of the anti-roll structure, and spring washers are added at the connection between the fixing bolts and the ear plates to prevent loosening due to vibration.

[0014] Furthermore, the I-beams are of type 56a, with a length of 8m, and the spacing is adjusted according to the length of the steel pipe columns to be connected.

[0015] Furthermore, the elevation adjustment mechanism consists of an adjusting screw and a pad. The pad is a 10mm thick steel plate. Two sets of adjusting screws and pads are configured at the bottom of each I-beam. The pad is connected to the I-beam by the adjusting screw, and the adjusting screw is used to level and calibrate the I-beam.

[0016] Furthermore, the anti-tipping support is a triangular structure cut from a 20mm thick steel plate. The anti-tipping support is fully welded to the web of the I-beam, and the end away from the I-beam is fixed to the hardened ground with M16×150 expansion bolts.

[0017] Furthermore, the anti-roll structure is an 8mm thick tile-shaped steel plate structure.

[0018] Furthermore, the laser rangefinder can establish a wireless communication connection with the matching handheld terminal, and the laser rangefinder can provide real-time feedback to the handheld terminal on the spacing deviation of the four I-beams.

[0019] This invention provides another technical solution: a construction method for a steel pipe column docking device for ultra-high cast-in-place box girder bridge construction, comprising the following steps:

[0020] S1: Pour and harden the site using C30 concrete, ensuring surface flatness error ≤3mm and bearing capacity ≥25kPa;

[0021] S2: Place four I-beams parallel and upright on the hardened ground, and adjust the spacing according to the length of the steel pipe column to be connected;

[0022] S3: Install an elevation adjustment mechanism at the bottom of the I-beam and calibrate it using a level instrument to keep the elevation error within ±2mm;

[0023] S4: Weld three sets of anti-tipping supports to the bottom of each I-beam and fix them to the hardened ground with M16×150 expansion bolts. The angle between the anti-tipping supports and the I-beam is 60°.

[0024] S5: Install transverse connecting rods at the ends of the I-beams, and weld the four I-beams together to form a frame structure;

[0025] S6: Mark positioning lines on the same side of the I-beam using a laser line projector, weld four limiting steel pipes vertically, and use the string method to verify that the straightness error is ≤1mm.

[0026] S7: Install a laser rangefinder sensor on the top of the limiting steel pipe and test its wireless connection with the matching handheld terminal to ensure normal data transmission;

[0027] S8: Select an anti-roll structure with a suitable curvature according to the diameter of the steel pipe column to be connected. Install the anti-roll structure on the flange of the I-beam with fixing bolts. A rubber buffer layer is pasted on the inside of the anti-roll structure and spring washers are added at the bolts.

[0028] S9: Hoist the two steel pipe columns to be connected onto the operating platform, with one side aligned with the reference surface formed by the limiting steel pipe. Check the spacing deviation through a handheld terminal, and then tighten the fixing bolts to secure the steel pipe columns to be connected.

[0029] S10: Check that the gap between the steel pipe columns to be connected is ≤2mm, and then perform welding operations after beveling the joint.

[0030] S11: After welding is completed and cooled to room temperature, remove the anti-roll structure, lift the finished steel pipe column, and complete a set of docking operations.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] The steel pipe column docking equipment and construction method for ultra-high cast-in-place box girder bridge construction of the present invention improves the docking accuracy of steel pipe columns. It adopts a combination of hardened site + modular I-beam operating platform + precision positioning components (limiting device + detachable anti-roll device) for construction. Stable installation is achieved with the help of elevation adjustment mechanism and triangular anti-tipping support. Precise docking is achieved through real-time monitoring and reference plane positioning control by laser ranging sensor. It prevents steel pipe column docking eccentricity, rolling offset and support overturning accidents caused by traditional manual alignment, thereby reducing safety risks. At the same time, it improves the docking accuracy and construction efficiency of steel pipe columns, and saves construction site occupation and material costs. Attached Figure Description

[0033] Figure 1 This is a front view of the docking device of the present invention;

[0034] Figure 2 This is a top view of the docking device of the present invention;

[0035] Figure 3 This is a side view of the docking device of the present invention;

[0036] Figure 4 This is an enlarged view of a portion of the steel pipe column to be connected according to the present invention;

[0037] Figure 5 This is an enlarged view of the anti-tipping support structure of the present invention;

[0038] Figure 6 This is an enlarged view of the elevation adjustment mechanism of the present invention.

[0039] In the diagram: 1. Hardened ground; 2. I-beam; 3. Elevation adjustment mechanism; 4. Pad; 5. Adjusting screw; 6. Anti-tipping support; 7. Expansion bolt; 8. Lateral connecting rod; 9. Limiting steel pipe; 10. Laser rangefinder sensor; 11. Steel pipe column to be connected; 12. Anti-roll structure; 13. Ear plate; 14. Fixing bolt; 15. Rubber buffer layer; 16. Spring washer. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-6This invention addresses the problems of manual alignment, large accuracy errors, excessive site occupation, serious material waste, and easy rolling and displacement of steel pipe columns in the construction of ultra-high cast-in-place box girder bridges. It provides a steel pipe column docking device for ultra-high cast-in-place box girder bridge construction, enabling a leap from manual, extensive docking to standardized, precise docking. This achieves the goals of improving construction quality, reducing safety risks, saving costs and space, and accelerating construction progress. Specifically, it includes four parallel, upright H-beams 2 arranged on a hardened site 1. The H-beams 2 are of type 56a and have a length of... 8m, the spacing is adjusted according to the length of the steel pipe columns 11 to be connected. An elevation adjustment mechanism 3 is installed at the bottom of each I-beam 2. The elevation adjustment mechanism 3 consists of an adjusting screw 5 and a pad 4. The pad 4 is a 10mm thick steel plate. Two sets of adjusting screws 5 and pads 4 are configured at the bottom of each I-beam 2. The pad 4 is connected to the I-beam 2 via the adjusting screws 5, and the adjusting screws 5 are used to level and calibrate the I-beam 2. Three sets of anti-tipping supports 6 are also welded at intervals at the bottom of each I-beam 2. The anti-tipping supports 6 are triangular structures cut from 20mm thick steel plates. The web of the four I-beams 2 is fully welded to the web of the I-beam 2, and the end furthest from the I-beam 2 is fixed to the hardened site 1 by M16×150 expansion bolts 7. Transverse connecting rods 8 are installed at the ends of the four I-beams 2, and the four I-beams 2 are connected by welding to form a frame structure. A limiting steel pipe 9 is vertically welded to each of the four I-beams 2, and a laser rangefinder sensor 10 is installed at the top of the limiting steel pipe 9. The laser rangefinder sensor 10 can establish a wireless communication connection with a matching handheld terminal, and provide real-time feedback to the handheld terminal regarding the four I-beams 2. The spacing deviation of the I-beam 2; the limiting steel pipe 9 is located on one side of the steel pipe column 11 to be connected, and an anti-roll structure 12 with an arc is provided on the other side of the steel pipe column 11 to be connected. The anti-roll structure 12 is an 8mm thick tile-shaped steel plate structure. The anti-roll structure 12 is connected to ear plates 13 on both sides. The anti-roll structure 12 is installed on the flange of the I-beam 2 by M12 fixing bolts 14. A 3mm thick rubber buffer layer 15 is pasted on the inner side of the anti-roll structure 12. A spring washer 16 is added at the connection between the fixing bolts 14 and the ear plates 13 to prevent vibration and loosening.

[0042] In this embodiment, a hardened site 1 is used as the base, and an operating platform is constructed using four parallel H-beams 2. A leveling mechanism 3 is installed at the bottom to achieve horizontal calibration. Triangular anti-tipping supports 6 are installed at the bottom of the H-beams 2 and fixed to the hardened site 1. A transverse connecting rod 8 in the middle enhances the overall rigidity. Collinear limiting steel pipes 9 are welded on the same side of the H-beams 2 to form a reference positioning surface. An anti-roll structure 12 adapted to the diameter of the steel pipe is detachably connected to the other side. A laser rangefinder sensor 10 is installed on the top of the limiting steel pipe 9 and wirelessly connected to a handheld terminal for real-time monitoring. During operation, one side of the steel pipe column 11 to be connected is attached to the limiting steel pipe 9, and the other side is fixed by the anti-roll structure 12. After gap detection and beveling, welding is completed, achieving precise, safe, and efficient docking.

[0043] To further explain the implementation process of the above embodiments, the present invention also provides a construction method for a steel pipe column docking device for ultra-high cast-in-place box girder bridge construction, comprising the following steps:

[0044] S1: Pour hardened site 1 with C30 concrete. The pouring size is determined according to the layout specifications of I-beams 2. Ensure that the surface flatness error is ≤3mm and the bearing capacity is ≥25kPa. The construction strength is reached after 7 days of curing.

[0045] S2: Place four I-beams 2 (56a type, 8m in length) vertically in parallel on the hardened site 1, and adjust the spacing (3-6m) according to the length of the steel pipe column 11 to be connected to ensure that the I-beams 2 are symmetrically positioned;

[0046] S3: Install an elevation adjustment mechanism 3 at the bottom of each I-beam 2. Each I-beam 2 is equipped with two sets of adjusting screws 5 (M20 specification) and pads 4 (10mm thick steel plate). The elevation error of the four I-beams 2 is controlled within ±2mm by leveling and calibration with a level instrument.

[0047] S4: Weld three sets of anti-tipping supports 6 to the bottom of each I-beam 2. The anti-tipping supports 6 are fully welded to the web of the I-beam 2 (weld height ≥ 8mm). The end away from the I-beam 2 is fixed to the hardened site 1 by M16×150 expansion bolts 7.

[0048] S5: Install transverse connecting rods 8 (20a channel steel) at the ends of I-beams 2, and connect the four I-beams 2 by welding to form a frame structure to enhance the overall rigidity;

[0049] S6: Mark the positioning line on the same side of the I-beam 2 using a laser line projector (elevation 1.2m above the surface of the hardened site 1), and weld four limiting steel pipes 9 (60×3mm steel pipes, 1m in length) vertically along the positioning line. After welding, use the string method to check and ensure that the same straightness error of the four limiting steel pipes 9 is ≤1mm.

[0050] S7: Install a laser rangefinder 10 on the top of each limiting steel pipe 9, and debug the wireless connection with the handheld terminal to ensure that the sensor can provide real-time feedback on the spacing deviation (accuracy ±0.5mm).

[0051] S8: Based on the diameter (600-1200mm) of the steel pipe column 11 to be connected, select an anti-roll structure 12 (8mm thick tile-shaped steel plate) with a suitable curvature, and install the anti-roll structure 12 at the preset position of the flange of the I-beam 2 using M12 fixing bolts 14; attach a 3mm thick rubber buffer layer 15 to the inside of the anti-roll structure 12, and add a spring washer 16 at the connection between the fixing bolts 14 and the ear plate 13 to prevent vibration and loosening;

[0052] S9: Use a crane to lift the two steel pipe columns 11 to be connected onto the operating platform, so that one side of the steel pipe column 11 to be connected fits the reference positioning surface formed by the limiting steel pipe 9.

[0053] S10: Check that the gap between the steel pipe columns to be connected is ≤2mm, and then perform welding operations after beveling the joint.

[0054] S11: After welding is completed and cooled to room temperature, remove the anti-roll structure 12, lift the finished steel pipe column, and complete a set of docking operations.

[0055] In step 10 above, the specific detection method is as follows: View the data fed back by the laser rangefinder 10 using a handheld terminal to ensure that the distance deviation between the steel pipe column 11 to be connected and the reference surface is ≤0.3mm. If a deviation exists, fine-tune the position of the steel pipe column until it meets the standard. Then, tighten the fixing bolts 14 to tightly fit the anti-roll structure 12 with the steel pipe column 11 to be connected, achieving lateral fixation of the steel pipe column 11 to be connected and preventing rolling or displacement during the connection process. Next, use a feeler gauge to check the connection gap between the two steel pipe columns 11 to be connected, controlling the gap to ≤2mm. If the gap is too large, adjust it by fine-tuning the position of the steel pipe columns or adding thin shims. Finally, use an angle grinder to process the bevel of the interface, ensuring that the bevel angle is 45° and the blunt edge is 2mm, meeting the welding process requirements. During welding, the position of the steel pipe column is monitored in real time via a handheld terminal. If any deviation occurs, the process is paused and adjusted immediately. After welding is completed, once the weld has cooled to room temperature (≤50℃), the fixing bolts 14 are loosened, the anti-roll structure 12 is removed, and the finished steel pipe column is lifted off the crane, completing the steel pipe connection operation. If steel pipes of different specifications need to be connected, the anti-roll structure 12 with a suitable curvature is replaced, and the above steps are repeated.

[0056] In addition, in the above method, after all steel pipes are connected, the laser rangefinder 10, anti-roll structure 12, and transverse connecting rod 8 can be removed in sequence. Then, the expansion bolts 7 are loosened and the anti-tipping support 6 is removed. Then, the four I-beams 2 are lifted away, and the pad 4 and adjusting screw 5 of the elevation adjustment mechanism 3 are recovered. After the components are cleaned, they are properly stored for reuse in subsequent projects.

[0057] In summary, the steel pipe column splicing equipment and construction method for ultra-high cast-in-place box girder bridges provided by this invention can achieve the following:

[0058] 1. Precise Positioning System for Controlling Docking Accuracy: A dual precision control system of "reference positioning surface + real-time monitoring" is constructed. The limiting steel pipe 9, calibrated by a laser line projector, forms a unified reference surface, ensuring accurate positioning on one side of the steel pipe column. The laser rangefinder 10 installed at the top provides real-time feedback on the distance deviation between the steel pipe column and the reference surface. Combined with the lateral fixation of the anti-roll structure 12, precise control of docking coaxiality is achieved, with an error ≤3mm, solving the problem of the roughness of traditional manual positioning.

[0059] 2. Modular and Adjustable Structure, Adaptable to Multiple Steel Pipe Specifications: The entire equipment adopts a modular design, and the core components (I-beams 2, anti-roll structure 12, and transverse connecting rods 8) can all be adjusted according to the specifications of the steel pipe columns. The spacing of the I-beams 2 can be adapted to steel pipes of different lengths within a range of 3-6m. The anti-roll structure 12 can be adapted to steel pipes with diameters of 600-1200mm by replacing the tile-shaped steel plates, eliminating the need to replace the entire support frame and achieving "one platform for multiple uses," thus reducing material waste.

[0060] 3. Safe and stable design to eliminate construction risks: The integrated multi-safety structure has a triangular anti-tipping support 6 that is fixed to the hardened site 1 by expansion bolts 7, and forms a frame structure with the central transverse connecting rod 8 to prevent the I-beam 2 from overturning; the anti-roll structure 12 has a rubber buffer layer 15 pasted on the inside to prevent the steel pipe from rolling and avoid surface scratches; spring washers 16 are added at the bolt connection to prevent loosening caused by construction vibration, thus reducing safety hazards in all aspects.

[0061] 4. Efficient construction and adaptation, shortening operation time: The platform construction process is standardized and does not require complicated processing. The elevation adjustment and calibration of 4 H-beams can be completed within 4 hours. During the steel pipe docking process, the positioning, fixing and testing processes are connected, and the docking time for a single group is ≤2 hours, which is 50% more efficient than the traditional process and adapts to the schedule requirements of key projects.

[0062] 5. Versatile and adaptable design reduces construction costs: The core components all use standard profiles (56a I-beams, 20a channel steel, standard bolts), which are convenient to purchase and can be reused. A single platform can be adapted to connect multiple batches and specifications of steel pipes. The platform occupies only 1 / 3 of the area of ​​traditional processes, and no additional working space is needed in complex working conditions with limited space, further reducing construction costs.

[0063] 6. Non-destructive protection design to ensure the quality of components and structure: Non-destructive connection is achieved through "flexible fixing + precise gap control". The rubber buffer layer 15 of the anti-roll structure 12 avoids damage to the surface of the steel pipe column. The feeler gauge detection controls the connection gap to ≤2mm, ensuring welding quality while avoiding deformation of the steel pipe column due to uneven stress, thus ensuring the long-term stability of the support structure.

[0064] 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 steel pipe column splicing device for the construction of ultra-high cast-in-place box girder bridges, characterized in that, The structure includes four parallel, upright I-beams (2) arranged on a hardened surface (1). Each I-beam (2) has a height adjustment mechanism (3) installed at its bottom. Three sets of anti-tipping supports (6) are welded at intervals to the bottom of each I-beam (2). Horizontal connecting rods (8) are installed at the ends of the four I-beams (2), and the four I-beams (2) are connected by welding to form a frame structure. A limiting steel pipe (9) is vertically welded to each I-beam (2), and a laser rangefinder sensor (10) is installed at the top of the limiting steel pipe (9). The steel pipe (9) is located on one side of the steel pipe column (11) to be connected. On the other side of the steel pipe column (11) to be connected, there is an anti-roll structure (12) with an arc. The anti-roll structure (12) is connected to the ear plates (13) on both sides. The anti-roll structure (12) is installed on the flange of the I-beam (2) by M12 fixing bolts (14). A 3mm thick rubber buffer layer (15) is pasted on the inner side of the anti-roll structure (12). A spring washer (16) is added at the connection between the fixing bolt (14) and the ear plate (13) to prevent vibration and loosening.

2. The steel pipe column splicing equipment for construction of ultra-high cast-in-place box girder bridges as described in claim 1, characterized in that: The I-beam (2) is of model 56a and has a length of 8m. The spacing is adjusted according to the length of the steel pipe column (11) to be connected.

3. The steel pipe column splicing equipment for construction of ultra-high cast-in-place box girder bridges as described in claim 1, characterized in that: The elevation adjustment mechanism (3) consists of an adjustment screw (5) and a pad (4). The pad (4) is a 10mm thick steel plate. Two sets of adjustment screws (5) and pads (4) are configured at the bottom of each I-beam (2). The pad (4) is connected to the I-beam (2) by the adjustment screw (5), and the adjustment screw (5) is used to level and calibrate the I-beam (2).

4. The steel pipe column splicing equipment for construction of ultra-high cast-in-place box girder bridges as described in claim 1, characterized in that: The anti-tipping support (6) is a triangular structure cut from a 20mm thick steel plate. The anti-tipping support (6) is fully welded to the web of the I-beam (2), and the end away from the I-beam (2) is fixed to the hardened site (1) by an M16×150 expansion bolt (7).

5. The steel pipe column splicing equipment for construction of ultra-high cast-in-place box girder bridges as described in claim 1, characterized in that: The anti-roll structure (12) is an 8mm thick tile-shaped steel plate structure.

6. The steel pipe column splicing equipment for construction of ultra-high cast-in-place box girder bridges as described in claim 1, characterized in that: The laser rangefinder (10) can establish a wireless communication connection with the matching handheld terminal, and the laser rangefinder (10) can provide real-time feedback to the handheld terminal on the spacing deviation of the four I-beams (2).

7. A construction method for a steel pipe column splicing device for ultra-high cast-in-place box girder bridge construction as described in claim 1, characterized in that: Includes the following steps: S1: Pour and harden the site (1) using C30 concrete to ensure that the surface flatness error is ≤3mm and the bearing capacity is ≥25kPa; S2: Place four I-beams (2) vertically in parallel on the hardened ground (1) and adjust the spacing according to the length of the steel pipe column (11) to be connected; S3: Install the elevation adjustment mechanism (3) at the bottom of the I-beam (2), and calibrate it by leveling with a level instrument to control the elevation error within ±2mm; S4: Weld three sets of anti-tipping supports (6) to the bottom of each I-beam (2), and fix them to the hardened ground (1) with M16×150 expansion bolts (7). The angle between the anti-tipping support (6) and the I-beam (2) is 60°. S5: Install transverse connecting rods (8) at the ends of the I-beams (2) and weld the four I-beams (2) together to form a frame structure; S6: Mark the positioning line on the same side of the I-beam (2) using a laser line projector, weld four limiting steel pipes (9) vertically, and use the string method to verify that the same straightness error is ≤1mm; S7: Install a laser rangefinder (10) on the top of the limiting steel pipe (9) and debug its wireless connection with the matching handheld terminal to ensure normal data transmission; S8: According to the diameter of the steel pipe column (11) to be connected, select an anti-roll structure (12) with a suitable curvature, install the anti-roll structure (12) on the flange of the I-beam (2) by fixing bolts (14), attach a rubber buffer layer (15) to the inside of the anti-roll structure (12), and add spring washers (16) at the bolts. S9: Hoist the two steel pipe columns (11) to be connected to the operating platform, with one side attached to the reference surface formed by the limiting steel pipe (9), check the spacing deviation through the handheld terminal, and then tighten the fixing bolts (14) to fix the steel pipe columns (11) to be connected. S10: Check that the gap between the steel pipe columns (11) to be connected is ≤2mm, and then perform welding after processing the bevel of the joint; S11: After welding is completed and cooled to room temperature, remove the anti-roll structure (12), lift the finished steel pipe column, and complete a set of docking operations.

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