A new construction method for rapid inversion of a slot body

Abstract

The present application relates to the technical field of trench construction, more particularly, to a novel trench rapid inversion construction method. The method comprises the following steps: S1, reference construction and radial trajectory constraint; S2, top shell assembly welding and force transmission component installation; S3, synchronous hydraulic climbing and suspension maintaining; S4, layer-by-layer inversion splicing of lower wall plates: surrounding and splicing the next layer of wall plates directly below the topmost shell maintained in suspension, welding the longitudinal joints of the next layer of wall plates, and ring seam welding the top edge of the next layer of wall plates and the bottom edge of the shell located directly above; S5, cyclic climbing and overall landing: moving the force transmission ring to the inner wall of the next layer of newly spliced wall plates and relocking, repeating S3 and S4, and completing the splicing of all layers of wall plates from top to bottom. The method effectively prevents the overturning of the trench caused by uneven settlement of the foundation or uneven external load, avoids high-altitude operation, and controls welding deformation. The present application is mainly applied to the inversion construction of trenches.

Description

Technical Field

[0001] This invention relates to the field of trench construction technology, and more specifically, to a novel construction method for rapid inversion of trenches. Background Technology

[0002] The inverted tank construction method significantly reduces the risks of working at height by transferring high-altitude assembly and welding operations to a lower level and repeating the "assembly, welding, and jacking" cycle. However, current construction still relies heavily on manual labor, with insufficient mechanization and automation, resulting in relatively low assembly and welding efficiency. In the hydraulic jacking stage, the automation levels of the PLC hydraulic jacking systems configured on-site vary considerably, and due to harsh operating environments, frequent installation and disassembly, and untimely maintenance, the systems often operate with defects, making it difficult to guarantee process safety.

[0003] After the hydraulic jacking of the tank, the resulting height difference energy constitutes a Class I hazard. Safety issues related to personnel, materials, the environment, and management constitute a Class II hazard, which in turn triggers this Class I hazard. Current technology lacks sufficient analysis of these risk factors and effective accident prevention measures. Especially in the later stages of jacking, the increased height of the tank and the greater unevenness of the weight at the top make it significantly more susceptible to external wind forces and localized foundation subsidence, requiring more stringent tilt control. Existing dual closed-loop control systems for position and pressure are ill-suited to effectively address these risks in the complex environment of the construction site.

[0004] Furthermore, the prepared specialized construction plans and safety management measures are often disconnected from actual operations. Timely inspections and confirmations at each stage are not possible, and problems are difficult to communicate and report promptly, leading to low construction efficiency and the inability to eliminate safety hazards in a timely manner. Therefore, the existing inverted tank construction technology still has significant room for improvement in terms of construction efficiency, process safety control, and automation levels. Summary of the Invention

[0005] To overcome the shortcomings of the existing technology, the present invention provides a novel construction method for rapid inversion of tanks.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A novel construction method for rapid inversion of tank bodies includes the following steps: S1. Baseline Construction and Radial Trajectory Constraint: A circumferential baseline is laid out on the surface of the tank foundation, and circumferential guide limiters are installed at intervals along the circumferential baseline. The circumferential guide limiters are used to radially and horizontally limit the climbing path of the tank wall. S2. Assembly and welding of the top shell and installation of force transmission components: Assemble and weld the top shell of the tank and the dome head connected to the top of the top shell in the low space inside the circumferential reference line. Then, install the force transmission expansion ring on the inner wall of the top shell along the circumferential direction. S3. Synchronous hydraulic climbing and suspension holding: Connect the movable ends of multiple lifting hydraulic cylinders to the force transmission expansion ring respectively, start the lifting hydraulic cylinder to push the force transmission expansion ring upward, so that the already welded arch head and the top shell are synchronously climbed to a height of one section, and the structure is suspended in the air by hydraulic self-locking. S4. Lower wall panel inverted splicing: The next layer of wall panels is set up and spliced ​​directly below the top layer of shell which is suspended in the air. The longitudinal joints of the next layer of wall panels are welded. Then, the top edge of the next layer of wall panels is welded to the bottom edge of the shell directly above it. S5. Cyclic climbing and overall lowering into position: Move the force-transmitting expansion ring to the inner wall of the newly spliced ​​next layer wall panel and re-lock it. Repeat the actions of S3 and S4 to complete the splicing of all layers of the tank wall panel from top to bottom. Then control the formed tank body to fall downward and fix it to the surface of the tank base.

[0007] In step S1, when installing circumferential guide limiting components at intervals along the circumferential reference line, the closed circular circumferential reference line is first measured and laid out using a measuring instrument. Then, anchors are fixed at intervals along the outer side of the circumferential reference line. Finally, the circumferential guide limiting components are horizontally fixed by the anchors, so that the inner limiting surface of the circumferential guide limiting components fits against the outer edge of the circumferential reference line.

[0008] S2 includes the following steps: S21. Assemble multiple arc-shaped top plates on a pre-set support frame, and weld the joints of two adjacent arc-shaped top plates to form the dome end cap. S22. Multiple arc-shaped wall panels are spliced ​​downward along the circumferential edge of the dome end cap, and the vertical joints of two adjacent arc-shaped wall panels are welded to form the topmost shell. S23. Assemble the segmented force-transmitting expansion rings into a complete circle, and drive the force-transmitting expansion rings to expand radially outward, so that their outer peripheral surface abuts against the inner wall surface of the top layer shell.

[0009] In step S3, hydraulic oil is synchronously injected into the oil inlet chambers of each lifting hydraulic cylinder by the control host, and the displacement and pressure values ​​of each lifting hydraulic cylinder are collected by the displacement sensor and the pressure sensor. The control host adjusts the opening of the flow valve of each oil inlet chamber according to the displacement and the pressure value, so as to control each lifting hydraulic cylinder to push upward at a set synchronous rate.

[0010] During the jacking process, the inclination of the arch head is detected by a rangefinder set on the top of the arch head, and the inclination is compared with a preset deviation threshold. When the inclination exceeds the deviation threshold, the oil supply of the lifting hydraulic cylinder at the relatively high position is paused, and the lifting hydraulic cylinder at the relatively low position is driven to replenish oil and jack up until the inclination returns to the set range.

[0011] In step S4, multiple arc-shaped plates are hoisted one by one to the bottom of the suspended shell, and the vertical bevels of two adjacent arc-shaped plates are aligned and locked. Then, they are welded along the vertical bevels to form the next layer of wall panels. Then, the lifting hydraulic cylinder is adjusted to move the suspended shell down as a whole, so that the bottom edge of the upper shell and the top edge of the next layer of wall panels are aligned and joined at the circumferential bevel.

[0012] After the bottom edge of the upper shell is aligned and joined with the top edge of the lower wall panel, multiple automatic circumferential welding machines are simultaneously installed on the outer and inner sides of the circumferential bevel. The multiple automatic circumferential welding machines are driven to perform circumferential double-sided synchronous welding along the circumferential bevel. After welding is completed, the formed circumferential seam is subjected to non-destructive testing, and the defective position is repaired according to the test results.

[0013] During the cyclic climbing in S5, after the circumferential weld is completed, the piston rod of the lifting hydraulic cylinder is retracted, causing the movable end of the lifting hydraulic cylinder to descend to the bottom of the next layer wall panel. Then, the force transmission expansion ring is released from its tight position against the upper housing, causing the force transmission expansion ring to move downward. The force transmission expansion ring is then driven to expand radially and lock again at the inner wall of the next layer wall panel, and the lifting hydraulic cylinder is restarted to enter the next cycle of pushing and climbing.

[0014] When the entire structure is lowered into place in S5, after the bottom wall panel and the top wall panel are welded together, the oil drain valves of all the lifting hydraulic cylinders are opened synchronously, so that the formed tank body falls vertically downward along the inner limiting surface of the circumferential guide limiting component until the bottom edge of the bottom wall panel contacts the surface of the tank body foundation. Then, the bottom edge of the bottom wall panel is welded and fixed to the embedded part embedded in the tank body foundation.

[0015] After welding and fixing the bottom edge of the bottom wall panel to the embedded part, release the locking state between the force transmission expansion ring and the inner wall of the bottom wall panel, disassemble and remove the force transmission expansion ring in sections, and then inject gas into the sealed tank to conduct an airtightness test to check the sealing quality of all welds.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting circumferential guide limiters to radially and horizontally limit the climbing path of the tank wall, the tank body maintains the set circumferential trajectory throughout the construction process, effectively preventing structural instability caused by deviation. The main control unit centrally and synchronously controls multiple lifting hydraulic cylinders, and displacement and pressure sensors provide real-time feedback on the operating status of each cylinder and dynamically adjust the opening of the flow valve to ensure that the displacement and output of each lifting point are consistent, avoiding shell tilting caused by asynchrony. By setting a distance measuring instrument on the top of the arch head to detect the tilt in real time, when the tilt exceeds the limit, the oil supply to the high-level cylinder is stopped and the low-level cylinder is driven to replenish oil and push to implement active correction, effectively preventing the tank body from overturning due to uneven foundation settlement or uneven external loads.

[0017] The top-down inverted assembly method was used to complete the welding of the top shell and the dome head in a low-level space, avoiding high-altitude operations. The force-transmitting expansion ring was combined with the inner wall of the shell by segmented assembly and radial expansion and clamping, achieving a firm connection without welding, which facilitates quick installation and disassembly and shortens the process interval. In the welding process, multiple automatic circumferential welding machines were used to perform double-sided synchronous welding on both the inner and outer sides of the circumferential bevel, which effectively controlled welding deformation and improved welding efficiency and quality consistency.

[0018] The control host enables real-time monitoring and dynamic adjustment of key parameters such as jacking displacement and jacking pressure. The independent detection of tilt using a rangefinder enables active correction during the jacking process. Non-destructive testing verifies the quality of the circumferential joint, forming a multi-level process monitoring system. The precise measurement and layout of the circumferential baseline and the accurate installation of the circumferential guide limiters provide a unified positioning benchmark for the entire construction process. The alignment and locking of the vertical bevel and the overall downward movement of the shell ensure the assembly accuracy of the longitudinal and circumferential joints. The airtightness test comprehensively verifies the final weld sealing quality, forming a complete quality closed loop and ensuring that the tank has good airtightness after being put into use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the construction process of the present invention. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0022] likeFigure 1 As shown, a novel construction method for rapid inversion of tank bodies includes the following steps: S1. Baseline Construction and Radial Trajectory Constraint: A circumferential baseline is laid out on the surface of the tank foundation. Circumferential guide limiters are installed at intervals along the circumferential baseline. The circumferential guide limiters are used to radially and horizontally limit the climbing path of the tank wall. This step not only provides a unified positioning baseline for the subsequent installation of each component, but also ensures that the entire tank maintains the set circumferential trajectory during repeated climbing and falling, effectively preventing misalignment of the wall panel assembly and structural instability caused by deviation.

[0023] S2. Assembly and welding of the top shell and installation of force transmission components: Assemble and weld the top shell of the tank and the dome head connected to the top of the top shell in the low space inside the circumferential baseline. Then, install the force transmission expansion ring on the inner wall of the top shell along the circumferential direction. The assembly and welding of the top shell and the dome head in the low space avoids the high-altitude operation risks required by the traditional forward assembly method. At the same time, the force transmission expansion ring, as a key force conversion component in the hydraulic lifting process, can evenly transmit the lifting force of the lifting hydraulic cylinder to the entire circumference of the shell, ensuring balanced force.

[0024] S3. Synchronous Hydraulic Climbing and Suspension Holding: Connect the movable ends of multiple lifting hydraulic cylinders to the force transmission expansion rings respectively. Start the lifting hydraulic cylinders to push the force transmission expansion rings upward, so that the already welded arch head and the top shell are synchronously lifted by a section height. The structure is then suspended in the air by hydraulic self-locking. This step achieves the stable vertical climbing of the large shell structure through the coordinated action of multiple lifting hydraulic cylinders. The hydraulic self-locking function can maintain the suspended state for a long time without continuous oil supply, providing a stable and sufficient working space and time for the splicing of the lower wall panels.

[0025] S4. Layer-by-layer inverted splicing of lower wall panels: The next layer of wall panels is installed and spliced ​​directly below the top layer of shell that is suspended in the air. The longitudinal joints of the next layer of wall panels are welded, and then the top edge of the next layer of wall panels is circumferentially welded to the bottom edge of the shell directly above it. Since the upper shell is suspended in the air and the splicing position is in a low-lying open space, the operators can complete the installation, assembly and welding of the wall panels without having to work at height, which greatly reduces the construction difficulty and safety risks.

[0026] S5. Cyclic Climbing and Overall Lowering into Position: Move the force-transmitting expansion ring to the inner wall of the newly spliced ​​next layer of wall panel and re-lock it. Repeat steps S3 and S4 to complete the splicing of all layers of wall panels in the tank from top to bottom. Then, control the formed tank to fall downwards and fix it to the tank foundation surface. By repeatedly performing the cyclical operation of "lifting-splitting-lifting again", the inverted construction of splicing wall panels layer by layer from top to bottom is realized. Finally, the formed complete tank is lowered into position, completing the entire construction process.

[0027] Preferably, in step S1, when installing the circumferential guide limiters at intervals along the circumferential baseline, a closed circular circumferential baseline is first measured and laid out using a measuring instrument. Then, anchors are fixed at intervals along the outer side of the circumferential baseline. Finally, the circumferential guide limiters are horizontally fixed using the anchors, ensuring that the inner limiting surface of the circumferential guide limiters is in contact with the outer edge of the circumferential baseline. This preferred method ensures the positioning accuracy of the circumferential baseline through the measuring instrument, provides a stable installation foundation for the circumferential guide limiters through the anchors, and ensures the consistency of the installation elevation and radial position of each limiter through the contact relationship between the inner limiting surface and the outer edge of the baseline, providing a precise guide trajectory for radial limiting during the subsequent trench wall climbing process.

[0028] Preferably, S2 includes the following steps: S21. Assemble multiple curved roof panels on a pre-set support frame and weld the joints of adjacent curved roof panels to form the arched head; the support frame provides temporary positioning support for the assembly of the curved roof panels, ensuring that the position and posture of each curved roof panel before welding meet the design requirements.

[0029] S22. Multiple arc-shaped wall panels are spliced ​​downwards along the circumferential edge of the arch head, and the vertical joints of two adjacent arc-shaped wall panels are welded to form the top shell. This step integrates the arch head and the top shell into a rigid structural unit, so that the structural unit can withstand a large lifting force without excessive deformation during the subsequent hydraulic jacking process.

[0030] S23. Assemble the segmented force-transmitting expansion rings into a complete circle, and drive the force-transmitting expansion rings to expand radially outward, so that their outer peripheral surface abuts against the inner wall surface of the top layer shell. The segmented assembly method facilitates the installation of the force-transmitting expansion rings in confined spaces, while the radial expansion and abutment method achieves a firm bond with the inner wall of the shell without welding, which avoids welding damage to the shell and facilitates quick disassembly after construction.

[0031] Preferably, in step S3, hydraulic oil is synchronously injected into the inlet chambers of each lifting hydraulic cylinder by the control host. Displacement and pressure sensors collect the displacement and pressure values ​​of each lifting hydraulic cylinder. The control host adjusts the opening of the flow valve in each inlet chamber based on the displacement and pressure values ​​to control each lifting hydraulic cylinder to push upwards at a set synchronous rate. This preferred method achieves centralized synchronous control of multiple lifting hydraulic cylinders through the control host. The displacement and pressure sensors provide real-time feedback on the operating status of each cylinder, and the control host dynamically adjusts the flow valve opening based on the feedback information. This effectively ensures that the displacement and output of each lifting point are basically consistent, avoiding housing tilting or local overload caused by asynchrony.

[0032] Preferably, during the jacking process, a rangefinder installed at the top of the arch head detects the inclination of the arch head and compares it with a preset deviation threshold. When the inclination exceeds the deviation threshold, the oil supply to the lifting hydraulic cylinder at the relatively high position is paused, and the lifting hydraulic cylinder at the relatively low position is driven to replenish oil and push the arch head until the inclination returns to the set range. This preferred method adds an independent inclination detection and active correction mechanism to the synchronous control. The rangefinder monitors the attitude change of the arch head in real time. Once the inclination exceeds the limit, active correction is implemented by selectively pausing the high-level cylinder and individually replenishing oil to the low-level cylinder. This effectively prevents the instability of the tank caused by uneven foundation settlement, hydraulic system leakage, or uneven load distribution, and significantly improves the safety and reliability of the jacking process.

[0033] Preferably, in step S4, multiple curved plates are hoisted one by one to the underside of the suspended shell. After aligning and locking the vertical bevels of adjacent curved plates, welding is performed along the vertical bevels to form the next layer of wall panels. Then, the lifting hydraulic cylinder is adjusted to lower the entire suspended shell, aligning the bottom edge of the upper shell with the top edge of the next layer of wall panels at the circumferential bevel. This step, by using hoisting equipment to send the curved plates one by one into the low-level working space under the suspended shell, eliminates the risk of high-altitude bulk assembly. The alignment and locking of the vertical bevels ensures the assembly accuracy of the longitudinal welds. The overall downward movement of the shell allows for a precise butt joint of the circumferential bevels between the upper and lower wall panels, providing excellent bevel conditions for subsequent circumferential welding.

[0034] Preferably, after the bottom edge of the upper shell is aligned and joined with the top edge of the lower wall panel, multiple automatic circumferential welding machines are simultaneously installed on the outer and inner sides of the circumferential bevel. These machines are driven to perform synchronous double-sided welding along the circumferential bevel. After welding, the formed circumferential seam undergoes non-destructive testing, and defects are repaired based on the test results. The simultaneous installation of automatic welding machines on both the inner and outer sides enables synchronous double-sided welding of the circumferential seam, effectively controlling welding deformation and residual stress, improving the welding quality and efficiency. Non-destructive testing and defect repair constitute a complete closed-loop control system for welding quality, ensuring that each circumferential seam meets the design quality requirements.

[0035] Preferably, during the cyclic climbing in S5, after the circumferential weld is completed, the piston rod of the lifting hydraulic cylinder is retracted, causing the movable end of the lifting hydraulic cylinder to descend to the bottom of the next layer of wall panel. Then, the force transmission expansion ring is released from its abutment with the upper shell, allowing the force transmission expansion ring to move downwards. The force transmission expansion ring is then re-driven to radially expand and lock at the inner wall of the next layer of wall panel, and the lifting hydraulic cylinder is restarted to enter the next cycle of jacking and climbing. This preferred method clearly defines the sequence of displacement and re-locking of the force transmission expansion ring between adjacent climbing cycles. The retraction of the piston rod provides operating space for the expansion ring to move downwards, the release of the abutment allows the expansion ring to slide freely along the inner wall of the shell to a new working position, and after re-expansion and locking, it can continue to bear the jacking load of the next cycle. The entire process is simple to operate and cyclically continuous, which helps to improve construction efficiency.

[0036] Preferably, during the overall lowering and positioning in S5, after the bottom wall panel and the top wall panel are welded together, the drain valves of all lifting hydraulic cylinders are opened synchronously. This allows the formed tank to fall vertically downwards along the inner limiting surface of the circumferential guide limiter until the bottom edge of the bottom wall panel contacts the surface of the tank foundation. Then, the bottom edge of the bottom wall panel is welded and fixed to the embedded part embedded in the tank foundation. The synchronous opening of all drain valves achieves synchronous lowering of each lifting hydraulic cylinder, avoiding tank tilting caused by asynchronous draining. The inner limiting surface of the circumferential guide limiter continuously plays a radial guiding role during the lowering process, ensuring that the tank is smoothly positioned along the set trajectory. The welding and fixing of the embedded part to the bottom edge provides a permanent connection between the formed tank and the foundation.

[0037] Preferably, after welding and fixing the bottom edge of the bottom wall panel to the embedded part, the locking state between the force transmission expansion ring and the inner wall of the bottom wall panel is released. The force transmission expansion ring is then disassembled and removed in sections. Gas is then injected into the sealed tank to conduct an airtightness test to check the sealing quality of all welds. This preferred method completes the disassembly and removal of the force transmission expansion ring after the tank is fixed in place, avoiding the long-term presence of the expansion ring as a temporary component inside the tank, which could adversely affect subsequent use. Sectional disassembly reduces the difficulty of removal. The airtightness test, as the final means of verifying welding quality, allows for a direct assessment of the sealing performance of each weld by detecting whether air bubbles escape from the weld surface, ensuring good airtightness of the tank after it is put into use.

[0038] The above description only illustrates the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes should be included within the protection scope of the present invention.

Claims

1. A novel construction method for rapid inversion of a tank, characterized in that, Includes the following steps: S1. Baseline Construction and Radial Trajectory Constraint: A circumferential baseline is laid out on the surface of the tank foundation, and circumferential guide limiters are installed at intervals along the circumferential baseline. The circumferential guide limiters are used to radially and horizontally limit the climbing path of the tank wall. S2. Assembly and welding of the top shell and installation of force transmission components: Assemble and weld the top shell of the tank and the dome head connected to the top of the top shell in the low space inside the circumferential reference line. Then, install the force transmission expansion ring on the inner wall of the top shell along the circumferential direction. S3. Synchronous hydraulic climbing and suspension holding: Connect the movable ends of multiple lifting hydraulic cylinders to the force transmission expansion ring respectively, start the lifting hydraulic cylinder to push the force transmission expansion ring upward, so that the already welded arch head and the top shell are synchronously climbed to a height of one section, and the structure is suspended in the air by hydraulic self-locking. S4. Lower wall panel inverted splicing: The next layer of wall panels is set up and spliced ​​directly below the top layer of shell which is suspended in the air. The longitudinal joints of the next layer of wall panels are welded. Then, the top edge of the next layer of wall panels is welded to the bottom edge of the shell directly above it. S5. Cyclic climbing and overall lowering into position: Move the force-transmitting expansion ring to the inner wall of the newly spliced ​​next layer wall panel and re-lock it. Repeat the actions of S3 and S4 to complete the splicing of all layers of the tank wall panel from top to bottom. Then control the formed tank body to fall downward and fix it to the surface of the tank base.

2. The novel construction method for rapid inversion of a tank according to claim 1, characterized in that: In step S1, when installing circumferential guide limiting components at intervals along the circumferential reference line, the closed circular circumferential reference line is first measured and laid out using a measuring instrument. Then, anchors are fixed at intervals along the outer side of the circumferential reference line. Finally, the circumferential guide limiting components are horizontally fixed by the anchors, so that the inner limiting surface of the circumferential guide limiting components fits against the outer edge of the circumferential reference line.

3. The novel construction method for rapid inversion of a tank according to claim 1, characterized in that: S2 includes the following steps: S21. Assemble multiple arc-shaped top plates on a pre-set support frame, and weld the joints of two adjacent arc-shaped top plates to form the dome end cap. S22. Multiple arc-shaped wall panels are spliced ​​downward along the circumferential edge of the dome end cap, and the vertical joints of two adjacent arc-shaped wall panels are welded to form the topmost shell. S23. Assemble the segmented force-transmitting expansion rings into a complete circle, and drive the force-transmitting expansion rings to expand radially outward, so that their outer peripheral surface abuts against the inner wall surface of the top layer shell.

4. The novel construction method for rapid inversion of a tank according to claim 1, characterized in that: In step S3, hydraulic oil is synchronously injected into the oil inlet chambers of each lifting hydraulic cylinder by the control host, and the displacement and pressure values ​​of each lifting hydraulic cylinder are collected by the displacement sensor and the pressure sensor. The control host adjusts the opening of the flow valve of each oil inlet chamber according to the displacement and the pressure value, so as to control each lifting hydraulic cylinder to push upward at a set synchronous rate.

5. A novel construction method for rapid inversion of a tank according to claim 4, characterized in that: During the jacking process, the inclination of the arch head is detected by a rangefinder set on the top of the arch head, and the inclination is compared with a preset deviation threshold. When the inclination exceeds the deviation threshold, the oil supply of the lifting hydraulic cylinder at the relatively high position is paused, and the lifting hydraulic cylinder at the relatively low position is driven to replenish oil and jack up until the inclination returns to the set range.

6. The novel construction method for rapid inversion of a tank according to claim 1, characterized in that: In step S4, multiple arc-shaped plates are hoisted one by one to the bottom of the suspended shell, and the vertical bevels of two adjacent arc-shaped plates are aligned and locked. Then, they are welded along the vertical bevels to form the next layer of wall panels. Then, the lifting hydraulic cylinder is adjusted to move the suspended shell down as a whole, so that the bottom edge of the upper shell and the top edge of the next layer of wall panels are aligned and joined at the circumferential bevel.

7. A novel construction method for rapid inversion of a tank according to claim 6, characterized in that: After the bottom edge of the upper shell is aligned and joined with the top edge of the lower wall panel, multiple automatic circumferential welding machines are simultaneously installed on the outer and inner sides of the circumferential bevel. The multiple automatic circumferential welding machines are driven to perform circumferential double-sided synchronous welding along the circumferential bevel. After welding is completed, the formed circumferential seam is subjected to non-destructive testing, and the defective position is repaired according to the test results.

8. The novel construction method for rapid inversion of a tank according to claim 1, characterized in that: During the cyclic climbing in S5, after the circumferential weld is completed, the piston rod of the lifting hydraulic cylinder is retracted, causing the movable end of the lifting hydraulic cylinder to descend to the bottom of the next layer wall panel. Then, the force transmission expansion ring is released from its tight position against the upper housing, causing the force transmission expansion ring to move downward. The force transmission expansion ring is then driven to expand radially and lock again at the inner wall of the next layer wall panel, and the lifting hydraulic cylinder is restarted to enter the next cycle of pushing and climbing.

9. A novel construction method for rapid inversion of a tank according to claim 1, characterized in that: When the entire structure is lowered into place in S5, after the bottom wall panel and the top wall panel are welded together, the oil drain valves of all the lifting hydraulic cylinders are opened synchronously, so that the formed tank body falls vertically downward along the inner limiting surface of the circumferential guide limiting component until the bottom edge of the bottom wall panel contacts the surface of the tank body foundation. Then, the bottom edge of the bottom wall panel is welded and fixed to the embedded part embedded in the tank body foundation.

10. A novel construction method for rapid inversion of a tank according to claim 9, characterized in that: After welding and fixing the bottom edge of the bottom wall panel to the embedded part, release the locking state between the force transmission expansion ring and the inner wall of the bottom wall panel, disassemble and remove the force transmission expansion ring in sections, and then inject gas into the sealed tank to conduct an airtightness test to check the sealing quality of all welds.

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