A method for hoisting and assembling large-section rectangular block pipe segments

Abstract

The present application relates to pipe section installation technical field, especially to a kind of super large section rectangular block pipe piece splicing hoisting method.The method comprises the following steps: S1, setting up splicing frame for splicing pipe piece in the installation area of pipe piece;S2, the lower end rectangular block pipe piece is placed on splicing frame by horizontal sling of hoisting equipment;S3, the lower end rectangular block pipe piece is connected with splicing frame;S4, the upper end rectangular block pipe piece is connected with the lower end rectangular block pipe piece placed on splicing frame by vertical lifting tool;S5, install turnover platform in splicing frame, install pipe section walkway and ladder on the upper end rectangular block pipe piece;S6, complete the upper and lower pipe joint bolt connection of the upper end rectangular block pipe piece and the lower end rectangular block pipe piece;S7, complete the sealing installation of the upper end rectangular block pipe piece and the lower end rectangular block pipe piece of pipe piece;S8, the whole pipe piece is hoisted down well.The method provides efficient hoisting process and splicing splicing frame, so that the splicing and hoisting work of pipe section are more efficient.

Description

Technical Field

[0001] This invention relates to the field of pipe section installation technology, and in particular to a method for splicing and hoisting ultra-large cross-section rectangular segmented pipe sections. Background Technology

[0002] The rectangular pipe jacking method for constructing urban underground tunnels offers advantages over the traditional "cut-and-cover" method, including less traffic disruption, minimal environmental impact, and lower construction costs. It has been widely applied in urban construction projects such as underground utility tunnels, expressway underpasses, pedestrian crossings, and subway entrances. However, with rapid urban development, the demand for larger rectangular tunnel sections has increased dramatically. Tunnel widths have grown from an initial 6m (pedestrian crossing) to 10m (two lanes) and even 15m (three lanes), posing significant challenges to the hoisting and transportation of rectangular tunnel sections.

[0003] Due to their large cross-sectional dimensions, each ultra-large rectangular pipe section weighs over 100 tons. The process involves multiple stages, from pipe section fabrication and transportation to on-site end-face treatment, on-site splicing, and hoisting into place. Currently, both splicing and hoisting are carried out on-site. However, due to the lack of standardized splicing and hoisting methods, improper on-site splicing before overall hoisting poses a risk of excessive local stress during hoisting, potentially leading to pipe section breakage or collapse. Therefore, a solution is urgently needed.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for splicing and hoisting ultra-large cross-section rectangular segmented pipe sections. This method provides an efficient hoisting process and a splicing frame for splicing, making the splicing and hoisting of pipe sections more efficient.

[0006] To achieve the aforementioned objective, the technical solution of the present invention is implemented as follows: a method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections, comprising the following steps: S1. Set up an installation area at the construction site of the tunnel segments and set up an assembly frame for splicing the tunnel segments in the installation area; S2. The lower rectangular segment of the tube is hoisted using the horizontal lifting device of the hoisting equipment and placed on the assembly frame. S3. Connect and fix the lower rectangular segmented tube placed on the assembly frame to the assembly frame; S4. The upper rectangular segment of the tube is hoisted using the vertical lifting device of the hoisting equipment, and the upper rectangular segment is connected to the lower rectangular segment placed on the assembly frame. S5. Install a flipping platform that can rotate 90 degrees along the vertical plane on the assembly frame, and install pipe section walkways and ladders on the upper rectangular segmented pipe sections. S6. Using the operating space provided by the flipping platform, complete the bolt connection of the upper and lower rectangular segment pipe sections to form a pipe section. S7. Use the assembly frame, pipe section walkway and ladder to complete the sealing installation of the upper rectangular segment pipe section and the lower rectangular segment pipe section; S8. Retract and secure the tilting platform of the assembly frame, remove the pipe section walkway and ladder, and use the vertical lifting device of the hoisting equipment to lift the entire pipe segment down into the well.

[0007] Preferably, the process of using the horizontal lifting device to lift the lower rectangular segmented tunnel section in step S2 includes: S21. Connect the horizontal hanger to the pin holes on the left and right sides of the lower rectangular segment using load-bearing pins to fix the horizontal hanger to the lower rectangular segment. S22. Using hoisting equipment, the horizontal lifting device and the lower rectangular segmented pipe are hoisted to the top of the assembly frame and aligned with the slot of the snap-fit ​​bracket at the bottom of the assembly frame. S23. Using hoisting equipment, slowly lower the horizontal lifting device and the lower rectangular segment of the pipe until the lower rectangular segment of the pipe falls into the slot of the clamping frame.

[0008] Preferably, in step S3, the lower rectangular segment tube is fixed to the assembly frame by a detachable pin connection.

[0009] Preferably, the vertical lifting device is detachably connected to the outer wall of the upper rectangular segment via a pin, and there are multiple vertical lifting devices, which are evenly distributed along the length of the outer wall of the upper rectangular segment.

[0010] Preferably, the assembly frame is provided with a flipping platform on both sides, and there are at least two flipping platforms on both sides of the assembly frame, and the flipping platforms are arranged symmetrically.

[0011] Preferably, the symmetrically arranged flipping platform, after being flipped to a horizontal state, is parallel to the splicing point of the upper rectangular segment and the lower rectangular segment.

[0012] Preferably, after the symmetrically arranged flipping platforms are flipped to a vertical state, the spacing between the symmetrically arranged flipping platforms forms the space through which the vertical lifting device passes.

[0013] Preferably, the snap-fit ​​slot of the snap-fit ​​bracket is provided with an inclined guide block; the outer side of the guide block is provided with a positioning pin; the positioning pin is connected to a drive unit that drives the positioning pin to rotate; the drive unit is connected to the outer side of the guide block.

[0014] Preferably, the pipe section walkway and ladder include an upper walkway installed circumferentially along the outer wall of the upper rectangular segment and ladders located on both sides of the outer wall of the upper rectangular segment; the upper walkway and ladder pipe sections are detachably connected to the pin holes on the outer wall of the upper rectangular segment by connecting positioning pins.

[0015] Preferably, the assembly frame includes a side support, on which a ladder and an operating platform are provided; the flipping platform is connected to the top of the side support.

[0016] The beneficial effects of this invention are reflected in: (1) The method provided by the present invention can provide an efficient hoisting process and splicing frame at the construction site of the pipe section. Through the cooperation of hoisting equipment and splicing frame, the pipe segments of the pipe section can be quickly fixed and efficiently and stably assembled, ensuring that the spliced ​​pipe segments have better integrity and can withstand greater stress during hoisting, thus improving the safety of pipe section hoisting work.

[0017] (2) The method provided by the present invention has a flip-up platform on the assembly frame. After flipping, the flip-up platform is parallel to the splicing point of the pipe segment, thereby providing a platform for operators to install and operate, making it convenient for operators to install the connecting bolts at the pipe segment splicing point. At the same time, when the pipe segment splicing and connection work is completed and the pipe segment needs to be hoisted as a whole, the flip-up platform flips to a vertical state, thereby reserving operating space for the vertical lifting tool to travel during hoisting, improving the flexibility of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the assembly structure of the tunnel segments according to the present invention; Figure 2 This is a side view of the assembly structure of the tunnel segments according to the present invention; Figure 3 This is a top view of the structure of the flipping platform on the assembly frame of the present invention in a horizontal state.

[0019] Figure labels and descriptions: A. Segment; 10. Assembly frame; 20. Tilting platform; 21. Guide block; 22. Positioning pin; 30. Clip-on frame; 40. Segment walkway and ladder. Detailed Implementation

[0020] 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 a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0021] Example 1 like Figure 1-3 As shown: This invention provides a method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections, comprising the following steps: S1. Set up an installation area at the construction site of segment A, and set up an assembly frame 10 for splicing segment A in the installation area.

[0022] This setup allows segment A to be assembled on-site at the construction site, eliminating the need for assembly at the production site. This reduces transportation difficulties and costs. On-site hoisting and assembly also facilitates real-time adjustments based on site conditions, enhancing the flexibility of segment A installation.

[0023] S2. The lower rectangular segment of the tube segment A is hoisted using the horizontal lifting device of the hoisting equipment and placed on the assembly frame 10.

[0024] In practical applications, the lower rectangular segment of segment A is first flipped using a flipping device so that the end face of the lower rectangular segment used for docking faces upwards. Then, a horizontal lifting device is used to lift the lower rectangular segment.

[0025] Step S2 involves the horizontal lifting device hoisting the lower rectangular segment of the tunnel. S21. Connect the horizontal hanger to the pin holes on the left and right sides of the lower rectangular segment using load-bearing pins to fix the horizontal hanger to the lower rectangular segment. S22. Using hoisting equipment, the horizontal lifting device and the lower rectangular segmented pipe are hoisted to the top of the assembly frame 10 and aligned with the slot of the snap-fit ​​bracket 30 at the bottom of the assembly frame 10. S23. Using hoisting equipment, the horizontal lifting device and the lower rectangular segment are hoisted and slowly lowered until the lower rectangular segment falls into the slot of the clamping bracket 30.

[0026] An inclined guide block 21 is provided in the snap-fit ​​groove of the snap-fit ​​bracket 30; a positioning pin 22 is provided on the outside of the guide block 21; the positioning pin 22 is connected to the drive unit that drives the positioning pin 22 to rotate; the drive unit is connected to the outside of the guide block 21. The positioning pin 22 forms a threaded engagement with the pin hole of the lower rectangular segmented tube.

[0027] In practical applications, the drive unit drives the positioning pin 22 to rotate, so that the positioning pin 22 enters the pin hole of the lower rectangular segment. At the same time, the positioning pin 22 is engaged with the drive unit, so that when segment A is hoisted, the end of the positioning pin 22 that is engaged with the drive unit can automatically fall off the drive unit under the pull of external force.

[0028] By installing the positioning pin 22, the lower rectangular segmented pipe is installed in the well. With the inclined support of the positioning pin 22, the curved surface will not wobble, which facilitates the later construction.

[0029] S3. Connect and fix the lower rectangular segment tube placed on the assembly frame 10 to the assembly frame 10. Generally, the assembly frame 10 is connected to the pin holes on the rectangular segment using pins.

[0030] The assembly frame 10 includes a side support, on which a ladder, an operating platform, and a tilting platform 20 are mounted; the tilting platform 20 is connected to the top of the side support. The tilting platform 20 can rotate 90 degrees along the vertical plane.

[0031] S4. The upper rectangular segment of the tube block A is hoisted using the vertical lifting device of the hoisting equipment, and the upper rectangular segment of the tube block is connected with the lower rectangular segment of the tube block placed on the assembly frame 10.

[0032] In practical applications, the vertical lifting devices are detachably connected to the outer wall of the upper rectangular segment via pins. Multiple vertical lifting devices are used, evenly spaced along the length of the outer wall of the upper rectangular segment. This arrangement ensures that the upper rectangular segment experiences more even force during lifting.

[0033] S5. Install a vertical ladder and a flip platform 20 that can rotate 90 degrees along the vertical plane on the assembly frame 10, and install a pipe section walkway and ladder 40 on the upper rectangular segment.

[0034] The assembly frame 10 is provided with a flipping platform 20 on both sides, and there are at least two flipping platforms 20 on both sides of the assembly frame 10, and the flipping platforms 20 are arranged symmetrically.

[0035] After the symmetrically arranged flipping platform 20 is flipped to a horizontal state, it is parallel to the splice of the upper rectangular segment and the lower rectangular segment.

[0036] After the symmetrically arranged flipping platforms 20 are flipped to a vertical state, the spacing between the symmetrically arranged flipping platforms 20 forms the space through which the vertical lifting device passes.

[0037] The pipe section walkway and ladder 40 includes an upper walkway for mounting the pipe section circumferentially along the outer wall of the upper rectangular segment and ladders located on both sides of the outer wall of the upper rectangular segment. Both the upper walkway and the ladder pipe section are detachably connected to the pin holes on the outer wall of the upper rectangular segment via connecting positioning pins.

[0038] S6. Using a vertical ladder, the operator goes to the operating space provided by the operating platform and the flipping platform 20 to complete the bolt connection between the upper rectangular segment and the lower rectangular segment, so that the upper rectangular segment and the lower rectangular segment are spliced ​​together to form segment A.

[0039] S7. Use the assembly frame 10, pipe section walkway and ladder 40 to complete the sealing installation of the upper rectangular segment pipe section and the lower rectangular segment pipe section of pipe section A.

[0040] S8. Retract and secure the flipping platform 20 of the assembly frame 10, remove the pipe section walkway and ladder 40, and use the vertical lifting device of the hoisting equipment to lift the pipe segment A as a whole into the well, thus completing the overall hoisting of the pipe section.

[0041] The above method can provide an efficient hoisting process and a splicing frame 10 at the construction site of the pipe section. Through the coordinated use of hoisting equipment and splicing frame 10, the pipe segment A can be quickly fixed and efficiently and stably assembled, ensuring better integrity of pipe segment A, enabling it to withstand greater stress during hoisting, and improving the safety of pipe section hoisting work.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections, characterized in that, Includes the following steps: S1. Set up an installation area at the construction site of the pipe segment (A) and set up an assembly frame (10) for splicing the pipe segment (A) in the installation area. S2. The lower rectangular segment of the tube (A) is lifted by the horizontal lifting device and placed on the assembly frame (10). S3. Connect and fix the lower rectangular segmented tube on the assembly frame (10) to the assembly frame (10); S4. The upper rectangular segment of the tube (A) is hoisted by the vertical lifting device of the hoisting equipment, and the upper rectangular segment is connected to the lower rectangular segment placed on the assembly frame (10). S5. Install a flipping platform (20) that can rotate 90 degrees along the vertical plane on the assembly frame (10), and install pipe section walkways and ladders (40) on the upper rectangular segmented pipe sections. S6. Using the operating space provided by the flipping platform (20), complete the bolt connection of the upper rectangular segment and the lower rectangular segment, and splice them to form segment (A). S7. Use the assembly frame (10) and pipe section walkway and ladder (40) to complete the sealing installation of the upper rectangular segment pipe section and the lower rectangular segment pipe section of the pipe section (A); S8. Take up and fix the flipping platform (20) of the assembly frame (10), remove the pipe section walkway and ladder (40), and lift the pipe segment (A) as a whole into the well using the vertical lifting tool of the hoisting equipment.

2. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 1, characterized in that, The process of using the horizontal lifting device to lift the lower rectangular segment of the tunnel in step S2 includes: S21. Connect the horizontal hanger to the pin holes on the left and right sides of the lower rectangular segment using load-bearing pins to fix the horizontal hanger to the lower rectangular segment. S22. The horizontal lifting device and the lower rectangular segmented pipe are hoisted to the top of the assembly frame (10) by the hoisting equipment and aligned with the slot of the snap-fit ​​frame (30) at the bottom of the assembly frame (10); S23. Using hoisting equipment, the horizontal lifting device and the lower rectangular segment are hoisted and slowly lowered until the lower rectangular segment falls into the slot of the clamping bracket (30).

3. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel lining according to claim 1, characterized in that, In step S3, the lower rectangular segment tube is fixed to the assembly frame (10) by a detachable pin.

4. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 1, characterized in that, The vertical lifting device is detachably connected to the outer wall of the upper rectangular segment via a pin, and there are multiple vertical lifting devices, which are evenly distributed along the length of the outer wall of the upper rectangular segment.

5. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 1, characterized in that, The assembly frame (10) is provided with a flipping platform (20) on both sides, and there are at least two flipping platforms (20) on both sides of the assembly frame (10), and the flipping platforms (20) are arranged symmetrically.

6. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 5, characterized in that, After the symmetrically arranged flipping platform (20) is flipped to a horizontal state, it is parallel to the splicing point of the upper rectangular segment and the lower rectangular segment.

7. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel lining according to claim 6, characterized in that, After the symmetrically arranged flipping platforms (20) are flipped to a vertical state, the spacing between the symmetrically arranged flipping platforms (20) forms the space through which the vertical lifting device passes.

8. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 2, characterized in that, The snap-fit ​​bracket (30) has an inclined guide block (21) in its snap-fit ​​groove; the guide block (21) has a positioning pin (22) on its outer side; the positioning pin (22) is connected to a drive unit that drives the positioning pin (22) to rotate; the drive unit is connected to the outer side of the guide block (21).

9. The method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel lining according to claim 1, characterized in that, The pipe section walkway and ladder (40) include an upper walkway installed circumferentially along the outer wall of the upper rectangular segment and ladders located on both sides of the outer wall of the upper rectangular segment; the upper walkway and ladder pipe sections are detachably connected to the pin holes on the outer wall of the upper rectangular segment by connecting positioning pins.

10. A method for splicing and hoisting ultra-large cross-section rectangular segmented tunnel sections according to claim 8, characterized in that, The assembly frame (10) includes a side support, on which a ladder and an operating platform are provided; the flipping platform (20) is connected to the top of the side support.

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