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Jacking-pushing-type final joint for immersed tunnel and butt-joint construction method thereof

A technology of immersed tube tunnel and construction method, which is applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as difficult to meet, achieve good thrust effect, good economy, and improve the effect of water stop

Active Publication Date: 2018-08-10
CCCC FIRST HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-stopping and thrusting effect of the push-type final joint of the existing structure is becoming more and more difficult to meet the stringent requirements for underwater water-stopping and thrusting under complex construction conditions. For the push-type final joint, underwater The two major problems of water stop and thrust are still the core problems that limit its further development. Solving this problem can achieve a breakthrough in the final joint

Method used

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  • Jacking-pushing-type final joint for immersed tunnel and butt-joint construction method thereof
  • Jacking-pushing-type final joint for immersed tunnel and butt-joint construction method thereof
  • Jacking-pushing-type final joint for immersed tunnel and butt-joint construction method thereof

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Embodiment Construction

[0029] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "front", "back" etc. are based on the attached figure 1 The positional relationship shown is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention . In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not...

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Abstract

The invention provides a jacking-pushing-type final joint for an immersed tunnel and a butt-joint construction method thereof, and belongs to the technical field of immersed tunnel construction. Underwater water stop and push stop of the final joint after jacking pushing can be quickly and effectively achieved, the water stop and push stop effects are good, and the safety is high. The jacking-pushing-type final joint comprises a connecting bearing opening formed in a to-be-mounted pipe segment, further comprises a jacking pushing piece, and further comprises a water stop assembly. A jacking pipe section is sleeved with the connecting bearing opening, a cavity capable of containing the jacking pushing piece is formed in the connecting bearing opening, and a grouting pipe is pre-embedded inthe cavity. The water stop assembly comprises three water stop belts; the first water stop belt is arranged at the end face of the pushed-out end of the jacking pipe section; the second water stop belt and the third water stop belt are both arranged on the periphery of the jacking pipe section; the second water stop belt can extend along with pushing out of the jacking pipe section; one end of thesecond water stop belt is fixedly connected to the jacking pipe section, and the other end of the second water stop belt is fixedly connected to the connecting bearing opening; and the third water stop belt is connected between the jacking pipe section and the connecting bearing opening in a sleeved mode.

Description

technical field [0001] The invention belongs to the technical field of immersed tube tunnel construction, and in particular relates to a push-type final joint of an immersed tube tunnel and a butt joint construction method thereof. Background technique [0002] In the installation of the pipe section of the immersed tube tunnel, in order to make the last pipe section sink smoothly, a space longer than the distance of the pipe section must be reserved. After the last pipe section is lowered, the end surface of the last pipe section needs to be connected with the previous pipe section through a connection structure, which is the final joint. [0003] With the development of immersed tunnel construction technology, the forms of final joints are becoming more and more diverse, such as: V-shaped block final joints, K-section final joints, and push-push final joints. Among them, the push-type final joint is often pushed by setting a push-up beam and several jacks in the steel str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/073E02D29/16
CPCE02D29/073E02D29/16Y02E10/20
Inventor 冯海暴刘德进李一勇潘伟陈鸿李增军苏长玺马宗豪曲俐俐冯甲鑫周延利丁宇诚张乃受曹永华
Owner CCCC FIRST HARBOR ENG
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