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A Segmental Prefabrication Method for Immersed Tube Sections

A technology of segmented prefabrication and pipe joints, applied in manufacturing tools, artificial islands, infrastructure engineering, etc., can solve the problems of long prefabrication cycle, large prefabrication factory area, and high difficulty in crack control

Active Publication Date: 2021-07-06
CCCC FOURTH HARBOR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of long prefabrication period, large prefabrication factory area, and high difficulty in crack control in the method of prefabricating immersed pipe sections by factory method in the prior art, and provide a segmental prefabrication of immersed pipe sections method

Method used

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  • A Segmental Prefabrication Method for Immersed Tube Sections
  • A Segmental Prefabrication Method for Immersed Tube Sections
  • A Segmental Prefabrication Method for Immersed Tube Sections

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Embodiment

[0046] For example, the section of the immersed tunnel adopts the scheme of two holes and one pipe gallery, the main line of the standard road section adopts two-way 8 lanes, the total length of the tunnel is 2310m, and it is divided into 29 pipe sections (80m×28 sections+70m×1 section), and the width of the immersed pipe section is 42.8 m, height 10.9m, 1.5m thick pipe joint structure top and bottom plate, 1.4m thick side wall, 0.7m thick middle partition wall, 2m wide middle corridor, and 161.8m structural sectional area 2 , the length of a single pipe joint is 80m, which can be divided into 3 sections to be poured, and each section to be poured is about 26.7m long.

[0047] The segmental prefabrication method of an immersed tube section according to the present invention for a single pipe section includes the following steps:

[0048] a. Bind the bottom plate steel bars, outer wall steel bars and middle wall steel bars of the entire pipe joint in the steel bar binding area ...

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Abstract

The invention relates to the technical field of immersed tube tunnel construction, in particular to a segmental prefabrication method for immersed tube joints, which can significantly shorten the prefabrication cycle of a single pipe joint without greatly increasing the prefabrication cost of a single joint. Frequent pushing and lifting of steel cages or pipe joints can also reduce the waiting period for pipe joints to reach the strength required for movement. The obvious reduction in the number of movements is conducive to reducing the difficulty of crack control, improving the forming quality of immersed pipes, and thus improving project quality. At the same time, The arrangement of the steel bar binding area and the pouring area of ​​this method and the coordination of the tire frame and the reciprocating movement position of the formwork make the prefabrication area of ​​a single pipe section compact, which is conducive to setting up multiple prefabrication lines in a site with limited width, which is convenient for prefabrication The layout of the factory, the moving process of the steel cage, tire frame and formwork do not need to erect a hoisting system, which is safe and convenient for construction, which further helps to shorten the construction period.

Description

technical field [0001] The invention relates to the technical field of immersed tube tunnel construction, in particular to a segmental prefabrication method for immersed tube joints. Background technique [0002] In the prior art, when a single pipe section of an immersed tube reaches a certain length (greater than or equal to 30m), it is necessary to pour the single pipe section in sections. With more and more super projects of immersed tunnels, the length of the pipe section , The size of the cross-section is also getting larger and larger. For example, the prefabrication project of the two-hole single-pipe corridor immersed pipe of the Hong Kong-Zhuhai-Macao Bridge is to push the bound and formed steel cage into the formwork through special equipment, and then close the mold and pour the concrete. After the concrete reaches the jacking strength, use the jacking equipment to push the immersed tube forward for one section, and then pour the concrete for the second section, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B23/02B28B7/18B28B7/00E02D29/073
CPCB28B7/0002B28B7/18B28B23/02B28B23/024E02D29/073E02D2250/0007E02D2250/0023
Inventor 梁杰忠王伟智马亿光明陈猛梁邦炎陈伟彬黄文慧旷明智王晓东戴双全黄跃龙龚志宏
Owner CCCC FOURTH HARBOR ENG CO LTD
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