River crossing construction method of multi-pipe-segment sinking pipe

A technology for crossing rivers and construction methods, applied in the direction of pipes/pipe joints/pipe fittings, artificial islands, water conservancy projects, etc., can solve the problems of unsatisfactory project cost and quality, high project cost, and technical difficulty, and improve construction quality. , The effect of reducing the difficulty of construction and reducing damage

Active Publication Date: 2016-11-16
天鸿建设集团有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this method of using underwater joints is technically difficult and expensive. For immersed tube water supply and drainage pipelines, the project cost and quality have gradually been unable to meet the existing buried construction technology.

Method used

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  • River crossing construction method of multi-pipe-segment sinking pipe
  • River crossing construction method of multi-pipe-segment sinking pipe
  • River crossing construction method of multi-pipe-segment sinking pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] A construction method for crossing a river with multiple pipe-segment immersed pipes, mainly comprising steps: step A, underwater earthwork construction; step B, 3 grouping of pipes in water areas, and above-water docking construction; step C, construction of immersed pipes in water areas; step D, underwater Trench 1 backfill.

[0049] The concrete construction method of step A wherein is as follows and sees attached Figure 4 :

[0050] a1. Measurement and setting out, plane setting out According to the pipeline design coordinates, calculate the relationship between the starting and ending points of the pipeline and the nearby control points, and refer to the topography at this point and the relative relationship between the nearby structures, and fix each setting-out point with piles After the ground points are checked one by one, the axis stakeout and rotation angle measurement can be carried out and fixed marks can be set up;

[0051] a2. Guidance layout, a guide ...

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PUM

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Abstract

The invention discloses a river crossing construction method of a multi-pipe-segment sinking pipe. The method comprises the steps that A, underwater earthwork construction is carried out, and a groove used for sinking of a pipeline is excavated; B, a water area pipeline is assembled and jointed, afloat joining construction is carried out, and afloat water-free multi-pipe-segment welding is achieved; C, the water area sinking pipe is constructed, and the pipeline used for being spliced into a whole sinks into the groove; D, the underwater groove is subject to backfilling, the groove used for containing the pipeline is filled and leveled up, the pipeline is hidden, afloat water-free welding work is carried out, the construction difficulty is reduced, construction quality is improved, and whole pipeline sinking after the multiple pipe segments are welded is achieved.

Description

technical field [0001] The invention relates to the technical field of laying pipelines underwater, more specifically, it relates to a construction method for crossing rivers by immersed pipes with multiple pipe sections. Background technique [0002] In the pipeline construction process, the pipeline crossing the river is a "throat project" in pipeline construction, which is not only technically difficult and requires a lot of investment, but also has a long construction period and high risks. The underwater connection of the immersed tube tunnel and the immersed tube water supply and drainage pipeline is a key link in the buried construction, which will be related to the quality of the entire immersed tube construction. [0003] At present, the connection forms of immersed tube pipelines are generally not rigid connection and flexible connection. In the case of rigid connection, the steel bars are connected longitudinally at the joints, and a reinforced steel plate is prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/07F16L1/16
CPCE02D29/07F16L1/161
Inventor 马伟才谭功毅王振大刘明杰张青
Owner 天鸿建设集团有限公司
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