Steel pipe support bottom splicing device and splicing method

Abstract

The invention belongs to the technical field of bridge jacking construction equipment, and particularly relates to a steel pipe support bottom splicing device and splicing method. A steel pipe support bottom splicing device comprises a steel pipe support bottom splicing mechanism and a jacking jack, the steel pipe support bottom splicing mechanism comprises a steel frame and rotating supporters, the steel frame is of a frame structure, and the two symmetrical rotating supporters are fixedly connected into the steel frame; the jacking jack is located at the bottom of the steel frame and under the rotating supporting device, the rotating supporting device is used for fixing the steel pipe support, and the jacking jack is used for jacking the steel pipe support standard knot upwards to achieve splicing with the lower portion of the steel pipe support. The jack is installed at the bottom and is matched with the rotating support, the steel pipe support is heightened quickly under the condition that top equipment of the steel pipe support does not need to be dismantled, and the problems that a traditional steel pipe support is difficult to heighten and low in construction efficiency are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge jacking construction equipment, and particularly relates to a steel pipe support bottom connection device and a connection method. Background Art

[0002] In bridge jacking construction, the steel pipe support is a key load-bearing structure, and its height needs to be dynamically adjusted along with the jacking process. The traditional steel pipe support heightening process has the following technical bottlenecks: (1) The connection problem under limited space conditions: Since the gap between the beam bottom and the support top is usually less than 50 cm during jacking operation, conventional hoisting equipment cannot be deployed, and construction workers need to operate in a narrow space of less than 1 m, resulting in low efficiency of steel pipe support connection and certain safety hazards; (2) Defects in jacking precision control: The existing technology adopts a step-by-step jacking method, and it is necessary to repeatedly disassemble the jacks at the top of the steel pipe support for support heightening, which is likely to cause construction deviations during the jacking process; (3) In alpine and canyon areas, it is difficult to use large equipment such as cranes for the connection of traditional floor-type steel pipe supports, and the construction difficulty and risk are relatively large. Therefore, there is an urgent need for a safe and efficient steel pipe support heightening device to solve the above problems. Summary of the Invention

[0003] In view of the above problems, the object of the present invention is to provide a steel pipe support bottom connection device and a connection method. The device has a stable structure, is convenient to install, and has strong adaptability. By installing the jack at the bottom and cooperating with the rotating support device, the steel pipe support can be quickly heightened without removing the equipment at the top of the steel pipe support, effectively solving the problems of difficult heightening of traditional steel pipe supports and slow construction efficiency.

[0004] The technical solution of the present invention lies in: A steel pipe support bottom connection device includes a steel pipe support bottom connection mechanism and a jacking jack. The steel pipe support bottom connection mechanism includes a steel frame and a rotating support device. The steel frame is a frame structure, and two symmetric rotating support devices are fixedly connected inside it. The jacking jack is located at the bottom of the steel frame and directly below the rotating support device. The rotating support device is used to fix the steel pipe support, and the jacking jack is used to jack up the standard section of the steel pipe support upward to complete the connection with the lower part of the steel pipe support.

[0005] The steel frame includes vertical supports, middle connecting cross plates, top connecting cross plates, bottom connecting cross plates, and a base plate. The base plate is welded to the vertical supports, and the vertical supports, middle connecting cross plates, top connecting cross plates, and bottom connecting cross plates are fixedly connected by high-strength bolts.

[0006] A connection port is provided at the lower part of the side of the steel frame. The height of the middle connecting cross plate at the connection port is greater than the sum of the height of the jacking jack in the retracted state and the height of the standard section of the steel pipe support, and the height of the bottom connecting cross plate is not higher than the height of the jacking jack when it retracts.

[0007] The distance between the middle connecting cross - plate and the bottom connecting cross - plate is greater than the sum of the height of the jack when it is not jacking and the height of the standard section of the steel pipe support.

[0008] The rotating support device includes a connecting plate, an ear plate, a rotating limit plate, a rotating support plate and a flange plate. The connecting plate is fixed to the middle connecting cross - plate of the steel frame by bolts. The ear plate is connected to the connecting plate by welding. The rotating limit plate is welded to the ear plate. The rotating support plate is movably connected to the ear plate. The flange plate is welded to the rotating support plate. A number of bolt holes are provided on the flange plate.

[0009] The rotating support plate is pin - connected to the ear plate.

[0010] A method for continuously connecting the bottom of a steel pipe support, using the above - mentioned device for continuously connecting the bottom of a steel pipe support, includes the following steps: S1. Conduct a comprehensive inspection of the device foundation and device components to evaluate their overall condition and structural safety; S2. Install the jack, a standard section of the steel pipe support and the steel pipe support in sequence; S3. Install the mechanism for continuously connecting the bottom of the steel pipe support and the rotating support device; S4. Control the jack to jack up the standard section of the steel pipe support; S5. Adjust the support position of the rotating support device, and bolt - connect the flange plate to the flange of the upper part of the standard section of the steel pipe support; S6. Lower the jack to complete the force system conversion; S7. Continuously connect the standard section of the steel pipe support from the lower installation opening of the steel frame; S8. Use the jack to jack up the standard section of the steel pipe support to butt - joint with the lower part of the upper standard section of the steel pipe support, and complete the bolt connection between the standard section of the steel pipe support and the upper standard section of the steel pipe support; S9. Disconnect the bolt connection between the flange plate and the flange of the upper part of the standard section of the steel pipe support, jack up the jack, and adjust the rotating support device to return to the original position; S10. After the continuous connection of the standard section of the steel pipe support is completed, conduct a comprehensive inspection of the support system to evaluate the overall stability and safety of the support system and the bridge. According to the monitoring data, conduct necessary maintenance and reinforcement treatment on the support system and the bridge; S11. Repeating steps S4 - S10 can realize the continuous connection and heightening of the steel pipe support.

[0011] Step S2 includes the following steps: S21. First, install the jack to a preset position and reinforce the jack to ensure the stability during the jacking construction; After the jack for lifting is installed, continue to install a standard section of steel pipe support above the jack for lifting. After the standard section of steel pipe support is installed, install the steel pipe support.

[0012] The described S3 includes the following steps: S31: First, install the vertical support in place, and then install the connecting cross plate and inclined plate to complete the assembly of the steel frame. S32: Install the rotating support device at the preset position on the steel frame. S33: After the device is installed in place, check the installation position accuracy of the device and the reliability of the connection method.

[0013] The described S4 includes the following steps: S41: Before the jack for liquid lifting operates, check the device and the steel pipe support to ensure safety. S42: Recover the rotating support device of the device to avoid interfering with the lifting of the steel pipe support. S43: Control the jack for lifting to jack up to the predetermined position to ensure that the rotating support device can rotate under the flange of the standard section of the steel pipe support for subsequent operations.

[0014] The described S5 includes the following steps: S51: Adjust the support position of the rotating support device and rotate the flange plate under the flange of the upper part of the standard section of the steel pipe support. S52: Control the jack for lifting to fall back until the flange of the upper part of the standard section of the steel pipe support is docked with the flange plate. S53: Connect the flange plate to the flange of the upper part of the standard section of the steel pipe support.

[0015] The described S7 includes the following steps: S71: After the jack for liquid lifting falls back in place, conduct a safety inspection on the steel frame and the steel pipe support. S72: Place the standard section of the steel pipe support into the continuous interface of the steel frame and install it above the jack for lifting.

[0016] The described S9 includes the following steps: S91: After the standard section of the steel pipe support is connected to the previous standard section of the steel pipe support, disconnect the connection between the rotating support device and the upper flange plate of the standard section of the steel pipe support. S92: The jack for lifting jacks up the standard section of the steel pipe support to the designed height to ensure that the rotating support device is smoothly recovered in place. S93: Adjust the rotating support device to recover in place to avoid interfering with the subsequent lifting operation of the steel pipe support.

[0017] The technical effects of the present invention are as follows: 1. The present invention is installed at the bottom of the jack and cooperates with the rotating support device. Without removing the equipment on top of the steel pipe support, it can quickly raise the steel pipe support, effectively solving the problems of difficult heightening and slow construction efficiency of traditional steel pipe supports; 2. The devices of the present invention are all modularly designed and are quickly disassembled and assembled through bolt connections; 3. The present invention uses a rotating support device with adjustable rotation support. By adjusting the position of the rotating support device, the jacking of the steel pipe support and the connection of standard sections are realized; 4. The present invention adopts a construction method of continuously connecting the steel pipe support at the bottom, which is simple and fast to operate, can greatly improve the connection efficiency of the steel pipe support, and reduce the risk of high-altitude operations.

[0018] The following will be further described in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the installation structure schematic diagram of a steel pipe support bottom connection device of the present invention.

[0020] Figure 2 is the top view structure schematic diagram of a steel pipe support bottom connection device of the present invention.

[0021] Figure 3 is the front view structure schematic diagram of a steel pipe support bottom connection device of the present invention.

[0022] Figure 4 is the structure schematic diagram of the rotating support mechanism of the present invention.

[0023] Reference numerals: 1 - steel pipe support, 2 - steel pipe support standard section, 3 - steel pipe support bottom connection mechanism, 4 - jack, 5 - steel frame, 6 - rotating support device, 7 - vertical support, 8 - connecting diagonal plate, 9 - middle connecting cross plate, 10 - top connecting cross plate, 11 - bottom connecting cross plate, 12 - base plate, 13 - connecting plate, 14 - ear plate, 15 - rotation limiting plate, 16 - rotating support plate, 17 - flange plate. DETAILED DESCRIPTION OF THE INVENTION Embodiment 1

[0024] As Figures 1 to 4 shown, a steel pipe support bottom connection device includes a steel pipe support bottom connection mechanism 3 and a jack 4. The steel pipe support bottom connection mechanism 3 includes a steel frame 5 and a rotating support device 6. The steel frame 5 is a frame structure, and two symmetric rotating support devices 6 are fixedly connected inside it. The jack 4 is located at the bottom of the steel frame 5 and directly below the rotating support device 6. The rotating support device 6 is used to fix the steel pipe support 1, and the jack 4 is used to jack up the steel pipe support standard section 2 to complete the connection with the lower part of the steel pipe support 1.

[0025] The steel frame of the present invention is assembled by bolting angle steel and steel plates. During the bottom continuation process after the steel pipe support is jacked up in place, it serves as the force-bearing foundation of the rotating support device, ensuring the force-bearing safety and overall stability of the steel pipe support. After the steel pipe support is jacked up in place, the rotating support device is bolted to the flange of the steel pipe support and bears the load of the steel pipe support during the bottom continuation process of the steel pipe support. After the rotating support device 6 is connected to the steel pipe support, as the jacking jack drops, the force-bearing system is converted. Subsequently, the standard section of the steel support is continued from the installation opening of the steel frame, and then the jacking jack is used to jack up the continued standard section and dock it with the original steel pipe support and complete the bolt connection of the flange plate. The jacking jack continues to jack up, releases the connection between the rotating support device and the steel pipe support, and rotates the rotating support back to its original position to complete the continuation operation of a single standard section of the steel pipe support. The present invention installs the jack at the bottom and cooperates with the rotating support device to achieve rapid heightening of the steel pipe support without removing the equipment at the top of the steel pipe support, effectively solving the problems of difficult heightening of traditional steel pipe supports and slow construction efficiency. Example 2

[0026] On the basis of Example 1, in this embodiment, preferably, the steel frame 5 includes a vertical support 7, a middle connecting cross plate 9, a top connecting cross plate 10, a bottom connecting cross plate 11, and a base plate 12. The base plate 12 is welded to the vertical support 7, and the vertical support 7, the middle connecting cross plate 9, the top connecting cross plate 10, and the bottom connecting cross plate 11 are fixedly connected by high-strength bolts.

[0027] The steel frame 5 of the present invention includes a vertical support 7, a middle connecting cross plate 9, a top connecting cross plate 10, a bottom connecting cross plate 11, and a base plate 12. The vertical support is made of angle steel and is responsible for bearing the vertical force of the steel pipe support. The middle connecting cross plate 9, the top connecting cross plate 10, and the bottom connecting cross plate 11 are bolted to the vertical support to form an overall stable frame. The bottom plate is arranged at the bottom of the vertical support to reduce the local stress of the support rod and improve the overall stability of the external frame.

[0028] The steel frame 5 of the present invention adopts a modular design. Each component is quickly assembled by high-strength bolts. The rotating support system 6 is connected by pin shafts and is fixed to the steel frame 5 by high-strength bolts. It effectively improves the on-site construction efficiency. At the same time, steel components of various sizes and devices of different sizes can be designed to better adapt to the continuation construction of steel pipe supports of different diameters and can be widely applied to various types of steel pipe support jacking operations. Example 3

[0029] On the basis of Example 1 or Example 2, in this embodiment, preferably, a connecting diagonal plate 8 is arranged in the frame space between the vertical support 7, the middle connecting cross plate 9, and the top connecting cross plate 10.

[0030] A connecting inclined plate 8 is arranged in the frame space among the vertical supports 7, the middle connecting cross plate 9 and the top connecting cross plate 10 of the present invention to ensure the structural stability of the steel frame 5. Embodiment 4

[0031] On the basis of Embodiment 1 or Embodiment 3, in this embodiment, preferably, a continuous interface is arranged at the lower part of the side surface of the steel frame 5, and the height of the middle connecting cross plate 9 at the continuous interface is greater than the sum of the height of the jacking jack 4 in the falling state and the height of the standard section 2 of the steel pipe support, and the height of the bottom connecting cross plate 11 is not higher than the height when the jacking jack 4 falls back.

[0032] A continuous interface is arranged at the lower part of the side surface of the steel frame 5 of the present invention. The height of the middle connecting cross plate 9 at the continuous interface is greater than the sum of the height of the jacking jack 4 in the falling state and the height of the standard section 2 of the steel pipe support, and the height of the bottom connecting cross plate 11 is not higher than the height when the jacking jack 4 falls back. Each time, the standard section 2 of the steel pipe support is installed from the continuous interface. At this time, the upper steel pipe support 1 load is borne by the device. At this time, the jacking jack 4 is in the falling state, and the middle connecting cross plate 9 and the bottom connecting cross plate 11 do not affect the placement of the standard section, ensuring that the standard section 2 of the steel pipe support can be installed in place. Embodiment 5

[0033] On the basis of Embodiment 1 or Embodiment 4, in this embodiment, preferably, the rotating support 6 includes a connecting plate 13, an ear plate 14, a rotating limit plate 15, a rotating support plate 16 and a flange plate 17. The connecting plate 13 is fixed to the middle connecting cross plate 9 of the steel frame by bolts. The ear plate 14 is connected to the connecting plate 13 by welding. The rotating limit plate 15 is welded to the ear plate 14. The rotating support plate 16 is movably connected to the ear plate 14. The flange plate 17 is welded to the rotating support plate 16, and a plurality of bolt holes are arranged on the flange plate 17.

[0034] The rotating support system of the present invention includes an ear plate mechanism, a rotating support plate and a flange plate. The ear plate mechanism is composed of two ear plates and a limit plate. A pin hole is arranged at the end of the rotating support plate and is pin-connected to the ear plate. The flange plate is welded to the end of the rotating connecting rod and is connected to the steel pipe support flange through bolts. The ear plate mechanism is arranged on the vertical support of the steel frame to ensure the overall force safety and reliability of the device. Embodiment 6

[0035] On the basis of Embodiment 1 or Embodiment 5, in this embodiment, preferably, the rotating support plate 16 is pin-connected to the ear plate 14.

[0036] The rotating support plate 16 of the present invention is pin-connected to the ear plate 14. The rotating support plate 16 can drive the flange plate 17 to rotate around the ear plate 14, thereby adjusting the position of the rotating support 6. Embodiment 7

[0037] A method for continuously connecting the bottom of a steel pipe support, using a device for continuously connecting the bottom of a steel pipe support as described above, includes the following steps: S1. Conduct a comprehensive inspection of the device foundation and device components to evaluate their overall condition and structural safety; S2. Install the jack 4, a standard section 2 of the steel pipe support, and the steel pipe support 1 in sequence; S3. Install the bottom continuous connection mechanism 3 of the steel pipe support and the rotating support 6; S4. Control the jack 4 to lift the standard section 2 of the steel pipe support; S5. Adjust the support position of the rotating support 6, and bolt the flange plate 17 to the flange on the upper part of the standard section 2 of the steel pipe support; S6. Lower the jack 4 to complete the force system conversion; S7. Continuously connect the standard section 2 of the steel pipe support from the lower installation opening of the steel frame 5; S8. Use the jack 4 to lift the standard section 2 of the steel pipe support to butt with the lower part of the upper standard section 2 of the steel pipe support, and complete the bolt connection between the standard section 2 of the steel pipe support and the upper standard section 2 of the steel pipe support; S9. Disconnect the bolt connection between the flange plate 17 and the flange on the upper part of the standard section 2 of the steel pipe support, lift the jack 4, and adjust the rotating support 6 to rotate and return to its original position; S10. After the continuous connection of the standard section 2 of the steel pipe support is completed, conduct a comprehensive inspection of the support system to evaluate the overall stability and safety of the support system and the bridge. According to the monitoring data, conduct necessary maintenance and reinforcement treatment on the support system and the bridge; S11. Repeating steps S4 to S10 can achieve continuous connection and heightening of the steel pipe support.

[0038] The step S2 includes the following steps: S21. First, install the jack 4 to the preset position and reinforce the jack 4 to ensure the stability during the jacking construction; S22. After the installation of the jack 4 is completed, continue to install a standard section 2 of the steel pipe support above the jack 4; S23. After the installation of the standard section 2 of the steel pipe support is completed, install the steel pipe support 1.

[0039] The step S3 includes the following steps: S31. First, install the vertical support 7 in place, and then install the connecting cross plate and the inclined plate to complete the assembly of the steel frame 5; S32. Install the rotating support 6 to the preset position on the steel frame 5; S33. After the device is installed in place, check the installation position accuracy of the device and the reliability of the connection method.

[0040] The S4 comprises the following steps: S41. Before the lifting operation of the hydraulic lifting jack 4, check the device and the steel pipe support 1 to ensure safety; S42, the rotating support 6 of the recovery device avoids interfering with the jacking of the steel pipe support; S43, control the lifting jack 4 to lift to a predetermined position, and ensure that the rotating support 6 can be rotated to below the flange of the steel pipe supporting standard section 2, so as to facilitate subsequent operations.

[0041] The S5 comprises the following steps: S51, adjusting the support position of the rotating supporter 6, and rotating the flange plate 17 to below the flange plate on the upper part of the steel pipe supporting standard section 2; S52, control the lifting jack 4 to fall back until the flange on the upper part of the steel pipe support standard section 2 is in contact with the flange plate 17; S53, connect the flange plate 17 to the flange on the upper part of the steel pipe support standard section 2.

[0042] The S7 comprises the following steps: S71, after the hydraulic lifting jack 4 falls back into place, perform a safety check on the steel frame 5 and the steel pipe support 1; S72, insert the steel pipe support standard section 2 from the continued interface of the steel frame 5, and install it above the lifting jack 4.

[0043] The S9 comprises the following steps: S91, after the steel pipe support standard section 2 is connected to the previous steel pipe support standard section 2, the connection between the rotating support 6 and the upper flange plate of the steel pipe support standard section 2 is released; S92, lift the steel pipe support standard section 2 to the designed height using the lifting jack 4 to ensure that the rotating support 6 is smoothly recovered and returned to its original position; S93, adjust the rotating support 6 to recover and return to its original position to avoid interfering with the subsequent jacking operation of the steel pipe support.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A steel pipe support bottom continuation device, characterized in that: The invention comprises a steel pipe support bottom connection mechanism (3) and a lifting jack (4), wherein the steel pipe support bottom connection mechanism (3) comprises a steel frame (5) and a rotating support (6), wherein the steel frame (5) is a frame structure, and two symmetrical rotating supports (6) are fixedly connected inside the frame, and the lifting jack (4) is located at the bottom of the steel frame (5) and directly below the rotating support (6), and the rotating support (6) is used to fix the steel pipe support (1), and the lifting jack (4) is used to lift the steel pipe support standard section (2) upward to achieve connection with the lower part of the steel pipe support (1).

2. The steel pipe support bottom continuation device according to claim 1, wherein: The steel frame (5) comprises a vertical support (7), a middle connecting transverse plate (9), a top connecting transverse plate (10), a bottom connecting transverse plate (11) and a base plate (12); the base plate (12) is welded to the vertical support (7); and the vertical support (7), the middle connecting transverse plate (9), the top connecting transverse plate (10) and the bottom connecting transverse plate (11) are fixedly connected by high-strength bolts.

3. The steel pipe support bottom continuation device according to claim 2, characterized in that: A connecting inclined plate (8) is provided in the frame space between the vertical support (7), the middle connecting horizontal plate (9) and the top connecting horizontal plate (10).

4. The steel pipe support bottom continuation device according to claim 2, characterized in that: The lower part of the side of the steel frame (5) is provided with a connecting interface, the height of the middle connecting transverse plate (9) at the connecting interface is greater than the sum of the heights of the lifting jack (4) and the steel pipe support standard section (2) when the lifting jack (4) is in a retracted state, and the height of the bottom connecting transverse plate (11) is not higher than the height of the lifting jack (4) when it is retracted.

5. The steel pipe support bottom continuation device according to claim 2, characterized in that: The rotation support (6) comprises a connecting plate (13), an ear plate (14), a rotation limiting plate (15), a rotation supporting plate (16) and a flange plate (17); the connecting plate (13) is fixed to a middle connecting transverse plate (9) of a steel frame by means of bolts; the ear plate (14) and the connecting plate (13) are connected by welding; the rotation limiting plate (15) and the ear plate (14) are welded; the rotation supporting plate (16) and the ear plate (14) are movably connected; the flange plate (17) and the rotation supporting plate (16) are welded; and a plurality of bolt holes are provided on the flange plate (17).

6. The steel pipe support bottom continuation device according to claim 5, characterized in that: The rotating support plate (16) is pin-connected to the ear plate (14).

7. A method for continuously connecting the bottom of a steel pipe support, using a device for continuously connecting the bottom of a steel pipe support as described in claim 5, characterized in that: The following steps are involved: S1. Comprehensively inspect the device foundation and device components to assess their overall condition and structural safety; S2, sequentially installing a lifting jack (4), a steel pipe support standard section (2), and a steel pipe support (1); S3, installing the steel pipe support bottom connecting mechanism (3) and the rotating support (6); S4, control the lifting jack (4) to lift the steel pipe support standard section (2); S5. Adjust the support position of the rotating support (6), and bolt the flange plate (17) to the flange plate on the upper part of the steel pipe support standard section (2); S6, lower the lifting jack (4) to complete the force system conversion; S7, connect the steel pipe support standard section (2) from the installation opening at the bottom of the steel frame (5); S8, using a lifting jack (4) to lift the steel pipe support standard section (2) to connect it with the lower part of the previous steel pipe support standard section (2), and complete the bolt connection between the steel pipe support standard section (2) and the previous steel pipe support standard section (2); S9, release the flange plate (17) and the flange bolt connection on the upper part of the steel pipe support standard section (2), lift it with the lifting jack (4), and adjust the rotating support (6) to return the rotating support to its original position; S10, Standard section of steel pipe support (2) After the connection is completed, the support system shall be comprehensively inspected to evaluate the overall stability and safety of the support system and the bridge. Based on the monitoring data, necessary maintenance and reinforcement shall be carried out on the support system and the bridge. S11. Repeating steps S4 to S10 can realize continuous connection and heightening of the steel pipe support.

8. The method for continuously connecting the bottom of a steel pipe support according to claim 7, characterized in that: The step S2 comprises the following steps: S21, first install the jacking jack (4) to the preset position, and reinforce the jacking jack (4) to ensure stability during the jacking construction; S22. After the jacking jack (4) is installed, a steel pipe support standard section (2) is installed above the jacking jack (4); S23. After the steel pipe support standard section (2) is installed, install the steel pipe support (1).

9. The method for continuously connecting the bottom of a steel pipe support according to claim 7, characterized in that: The S5 comprises the following steps: S51, adjusting the support position of the rotating support (6), and rotating the flange plate (17) to below the flange plate on the upper part of the steel pipe supporting standard section (2); S52, control the lifting jack (4) to fall back until the flange on the upper part of the steel pipe support standard section (2) is in contact with the flange plate (17); S53. Connect the flange plate (17) to the flange on the upper part of the steel pipe support standard section (2).

10. A method for continuously connecting the bottom of a steel pipe support according to claim 7, characterized in that: The step S2 comprises the following steps: The step S9 comprises the following steps: S91, after the steel pipe support standard section (2) is connected to the previous steel pipe support standard section (2), the connection between the rotating support (6) and the upper flange plate of the steel pipe support standard section (2) is released; S92, the lifting jack (4) lifts the steel pipe support standard section (2) to the designed height to ensure that the rotating support (6) is smoothly recovered and returned to its original position; S93, adjust the rotating support (6) to retract and return to its original position to avoid interfering with the subsequent lifting operation of the steel pipe support.

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