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Immersed tube tunnel push-out type final joint crimping method

A joint crimping and immersed tunnel technology, applied in water conservancy projects, artificial islands, hydropower and other directions, can solve the problems of difficult installation and control technology, complex equipment systems, etc., to reduce the complexity of the system and the difficulty of installation and control technology, Ingenious idea, the effect of reducing frictional resistance

Active Publication Date: 2020-12-01
CCCC HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a push-out type final joint crimping method for immersed tube tunnels, which is used to solve the shortcomings of complex equipment systems and difficult installation and control technology in the prior art

Method used

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  • Immersed tube tunnel push-out type final joint crimping method
  • Immersed tube tunnel push-out type final joint crimping method
  • Immersed tube tunnel push-out type final joint crimping method

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Embodiment Construction

[0045] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0046] This embodiment provides a push-out type final joint crimping method (abbreviated as the method in this embodiment) of the immersed tube tunnel. The method is as follows: figure 1 , Figure 4 , Figure 5 and Figure 6 shown. In order to implement the method, this embodiment further proposes a push-out final joint (referred to as a structure in this embodiment), the structure is as follows figure 2 and image 3 shown. Further, this embodiment also proposes an immersed tube tunnel built by this method, and the immersed tube tunnel includes the push-out final joint described in this embodiment. The complete construction process of the immersed tube tunnel is as follows: Figure 8 to F...

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Abstract

The invention relates to the technical field of immersed tube tunnel construction methods, in particular to an immersed tube tunnel push-out type final joint crimping method. The method comprises thefollowing steps that a second prefabricated section is transported to the position above a preset position in butt joint with a first prefabricated section in a floating mode on a construction site, and a final joint part is arranged in the end, facing the first prefabricated section, of the second prefabricated section in a sleeved mode; the second prefabricated section is sunk to a preset position, end sealing doors are packaged at the adjacent positions in the final joint part and the second prefabricated section correspondingly, a gap is reserved between the two end sealing doors, and in the sinking process of the second prefabricated section, the water pressure in the gap and the water pressure outside the second prefabricated section are driven to be dynamically balanced; and water is injected into the gap to drive the final joint part to be pushed out towards the first prefabricated section by utilizing the water pressure in the gap until the final joint part extends out of thesecond prefabricated section and is in butt joint with the first prefabricated section, so that a push-out type final joint is constructed. The method is used for overcoming the defects that in the prior art, an equipment system is complex and the installation control technology is difficult.

Description

technical field [0001] The invention relates to the technical field of construction methods for immersed tube tunnels, in particular to a push-out type final joint crimping method for immersed tube tunnels. Background technique [0002] Immersed tube tunnel refers to an underwater tunnel built by the immersed tube method. The immersed tube method is the abbreviation of the prefabricated segment immersed method, and it is a construction method for building tunnels under water. The common way to construct an immersed tunnel by the immersed tube method is to float several prefabricated sections to the construction site on the water surface, and then sink and install the prefabricated sections one by one in the dredged underwater foundation trench. [0003] At present, in the construction process of existing immersed tube tunnels, each prefabricated section is usually docked from the two ends of the immersed tube construction site to the middle, and the final joint parts need t...

Claims

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Application Information

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IPC IPC(8): E02D29/073E02D29/16E02D19/02
CPCE02D29/073E02D29/16E02D19/02E02D2600/20E02D2250/0092Y02E10/20
Inventor 徐国平黄清飞刘明虎秦辉辉刘洪洲姬海王建平
Owner CCCC HIGHWAY CONSULTANTS
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