Large-section immersed tube end sealing door assembling method

CN120683889AActive Publication Date: 2025-09-23CCCC FIRST HARBOR ENGINEERING CO LTD +2
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Patent Information

Application Number
CN202511144068.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-15
Publication Date
2025-09-23
Estimated Expiration
2045-08-15

AI Technical Summary

Technical Problem

In the construction of large-section immersed tube tunnels, the existing technology easily causes the brackets and H-shaped steel to come into contact with the end faces of the immersed tubes during the lifting process, resulting in changes in posture and difficulty in aligning the embedded parts, increasing operational risks and installation difficulty. Especially when the immersed tube section is large, the H-shaped steel is long and heavy, making it difficult to adjust and straighten.

Method used

By rationally setting the steel beam fishing point and balanced lifting mechanism, and through the cooperation of the crane and hand hoist, the tilting posture of the H-shaped steel is controlled to enter the pipe section, and the balance beam is used to keep the bull leg balanced to ensure accurate docking of the embedded parts; at the same time, the vertical installation of the H-shaped steel is achieved through the synchronous operation of the lifting cable and forklift.

Benefits of technology

It improves the installation accuracy and efficiency of the corbel and H-shaped steel, reduces the operation risk, simplifies the construction process, enhances the installation convenience and safety, and ensures the stability and sealing performance of the end sealing door.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a method for assembling a large-section immersed tube end sealing door. The method comprises the steps of mounting a bracket and a lower bracket, mounting H-shaped steel, mounting a panel and mounting an omega-shaped water stop steel plate. In the step of mounting the bracket and the lower support, the bracket is mounted through a balance hoisting mechanism, and the specific steps of mounting the H-shaped steel are as follows: hoisting the H-shaped steel and enabling the H-shaped steel to incline relative to the horizontal plane, attaching a hoisting cable to an end steel shell, pulling the bottom end of the H-shaped steel to rotate to a vertical state, and synchronously pulling the two ends of the H-shaped steel to pull the H-shaped steel into a joint. The steel beam fishing point is reasonably arranged, the H-shaped steel is erected and inclined when lifted, the upper portion of the H-shaped steel extends to the pipe joint, the upper end of the H-shaped steel can conveniently enter the pipe joint preferentially, the lower portion of the H-shaped steel can be conveniently pushed into the pipe joint, the posture of the pipe joint is easy to adjust, and the installation convenience of the H-shaped steel is greatly improved.
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Citation Information

Patent Citations

  • Construction method of bracket on pipe joint

    CN112227417A

  • Hoisting tool for steel shell immersed tube end sealing door and installation method for steel shell immersed tube end sealing door

    CN112299224A

  • Immersed tube tunnel is with holding structure of sealing up a door

    CN204738309U

  • Final joint of immersed tunnel as well as prefabrication method and installation method

    EP3378994A1

  • Integrated immersed tube coupling and installation method thereof as well as installation closure method of immersed tube coupling

    US10253904B1