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Integrated immersed pipe section, installing method thereof and installing and closure method of immersed pipe section

An installation method and technology of pipe joints, applied in the direction of pipes/pipe joints/pipes, shaft equipment, earth-moving drilling, etc., can solve the problems of uneven settlement, endangering submarine tunnels, etc. The effect of engineering risk

Pending Publication Date: 2018-02-09
CCCC HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome that the existing final joints in the prior art are all designed separately, which is different from common pipe joints. There is a difference in stiffness between the foundations of the final joints and common pipe joints used for sinking and supporting, which may be used in subsea tunnels. Uneven settlement occurs during operation, which endangers the above-mentioned shortcomings of the subsea tunnel, and provides an integrated immersed tube joint and its installation method, and an installation and closing method of the immersed tube joint

Method used

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  • Integrated immersed pipe section, installing method thereof and installing and closure method of immersed pipe section
  • Integrated immersed pipe section, installing method thereof and installing and closure method of immersed pipe section
  • Integrated immersed pipe section, installing method thereof and installing and closure method of immersed pipe section

Examples

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Embodiment 1

[0095] Such as figure 1 , 4 As shown in -6, an integrated immersed tube joint according to the present invention includes a standard immersed tube joint 1, and both ends of the standard immersed tube joint 1 are provided with closed ring-shaped retractable water-stop joints 2.

[0096] Both ends of each immersed tube section are respectively provided with end seal doors 5 to prevent seawater from entering the inside of the immersed tube section. After the immersed tube section is docked with the installed immersed tube section, two adjacent A junction cavity 8 is formed between two end seal doors 5 opposite to each immersed tube section, wherein as Figure 1-3 As shown, the other ordinary immersed tube joints at the non-final closing place are connected through sinking butt joints 9, and after the water in the joint cavity 8 is discharged, the end seal door 5 is removed so that two adjacent The immersed tube section is connected, and the immersed tube section here includes ...

Embodiment 2

[0104] As shown in Figure 2, an integrated immersed tube joint according to the present invention includes a standard immersed tube joint 1, and both ends of the standard immersed tube joint 1 are provided with closed ring-shaped retractable water stop Connector 2.

[0105] The difference from Example 1 is that the standard immersed tube section 1 included in the integrated immersed tube section is provided with two flexible joints 7, and each of the flexible joints 7 makes the standard immersed tube section 1 It is flexible while maintaining rigidity, which facilitates the release of internal stress of the standard immersed tube section 1 after closing.

[0106] As a preferred solution of this embodiment, the standard immersed tube section 1 is provided with two flexible joints 7 near both ends, and the two flexible joints 7 divide the standard immersed tube section 1 into three sections Tube segment. Each of the flexible joints 7 includes a closed ring-shaped first waterst...

Embodiment 3

[0109] As shown in Figure 3, an integrated immersed tube joint according to the present invention includes a standard immersed tube joint 1, and both ends of the standard immersed tube joint 1 are provided with closed ring-shaped retractable water stop Connector 2.

[0110] The difference from Example 1 is that the standard immersed tube joints 1 on both sides of the integrated immersed tube joint are respectively provided with a flexible joint 7, and each of the flexible joints 7 makes the standard immersed tube joint 1 The tube section 1 is flexible while maintaining rigidity, which is convenient for releasing internal stress of the standard immersed tube section 1 and the integrated immersed tube section after closing.

[0111] As a preferred solution of this embodiment, each of the flexible joints 7 divides the corresponding standard immersed tube section 1 into two sections. Each of the flexible joints 7 includes a closed ring-shaped first waterstop, the first waterstop ...

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Abstract

The invention discloses an integrated immersed pipe section, an installing method thereof and an installing and closure method of the immersed pipe section. The integrated immersed pipe section comprises a standard immersed pipe section, and extension-type water joints in a closed ring shape are arranged at the two ends of the standard immersed pipe section. By using the integrated immersed pipe section, the immersed pipe section closed finally is still the standard immersed pipe section and needs the same foundation as a common pipe section, stiffness difference is avoided, the risk of differential settlement of pipe sections during operation of a subsea tunnel can be effectively reduced, the same installing equipment is used for installing the closed immersed pipe sections and the otherimmersed pipe sections, and a floating crane and other equipment do not need to be arranged additionally. Compared with the existing method, installation of a specially-made final joint is omitted, the construction process is simplified, and engineering risks are reduced; on-sea special construction equipment ship rent is very high, cost is reduced substantially by using the integrated immersed pipe section, and various resources are saved.

Description

technical field [0001] The invention relates to the field of subsea tunnel construction, in particular to an integrated immersed tube joint, an installation method thereof, and a method for installing and closing the immersed tube joint. Background technique [0002] Immersed tube tunnel construction is to float and transport the prefabricated tunnel immersed tubes in semi-submerged barge or dry dock to the predetermined position for sinking and docking. In order to make the last tube section sink smoothly, a distance longer than this section must be left Space, the pipe section that is placed in the remaining distance space is regarded as the final joint, that is, the two ends of the tunnel connection are immersed in the construction of the pipe, and the joint is docked in the sea, and the final closed pipe section is the final joint. The existing final joints are all integral active water-stop final joints, the length of which fits the distance between two sections of imme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/18E21D11/22E21D11/38
CPCE21D11/08E21D11/083E21D11/18E21D11/22E21D11/385E02D29/073E02D29/16B21D39/046F16L1/16F16L1/207F16L1/26
Inventor 林巍林鸣刘晓东
Owner CCCC HIGHWAY CONSULTANTS
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