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Pipe jacking relay jacking conversion device and construction method

A construction method and conversion device technology, applied in the direction of pipes/pipe joints/fittings, pipe laying and maintenance, mechanical equipment, etc., can solve the problems of short construction section distance, increase construction continuity, and extend jacking construction intervals, etc. Reach the effect of reducing the project cost and reducing the structural strength of the pipeline

Active Publication Date: 2020-12-25
保山市地下综合管廊投资管理有限责任公司 +1
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Problems solved by technology

The invention effectively solves the shortcomings of the existing pipe jacking construction process, such as high requirements for pipeline structure strength and short construction section distance, by setting casing pipes in the middle of the jacking interval and utilizing three sets of jacks for jacking, without increasing jacking. On the premise of the structural strength of the pipeline, the jacking construction area is extended to increase the continuity of the construction and reduce the cost

Method used

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  • Pipe jacking relay jacking conversion device and construction method
  • Pipe jacking relay jacking conversion device and construction method
  • Pipe jacking relay jacking conversion device and construction method

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to facilitate the understanding of technical personnel.

[0029] Depend on Figure 1-7 Shown, a kind of pipe jacking relay jacking construction method, concrete steps are:

[0030] Step 1: Bolt holes are opened on the side walls of the front and rear ends of the jacking pipeline 1, and then the casing 5 is sleeved on the periphery of the jacking pipeline Ⅰ1-1 and the jacking pipeline Ⅱ1-2 behind the prefabricated pipeline, and the bolts are used to connect firmly. Use the main push jack 2 to jack the prefabricated pipeline, the jacking pipeline I1-1, the jacking pipeline II1-2, and the casing 5 to the predetermined position. As an optimization, 8 bolt holes are opened, and 4 holes are opened at the front end of the jacking pip...

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Abstract

The invention relates to a pipe jacking relay jacking conversion device and a construction method, and belongs to the technical field of underground engineering construction. A sleeve is additionallyarranged in the middle part of a jacking region; under the protection of the sleeve, two sets of different jacks are used for converting the position and the stress system of a jacking pipe; meanwhile, the jacks in the sleeve are used for pushing a jacking pipeline in front of the sleeve to perform jacking construction; after the jacking and pushing of the single-section pipeline in the sleeve iscompleted, the main pushing jack is used for pushing a rear pipeline into the sleeve; and system conversion is sequentially achieved. The total load of the main pushing jack is the sum of friction force of all pipelines behind the sleeve, the total load of a relay jack is the sum of friction force of all pipelines in front of the sleeve, so that the pipelines are more uniformly stressed, the single construction interval length is multiplied, the construction continuity is improved, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of underground engineering construction, and in particular relates to a pipe jacking relay jacking conversion device and a construction method. Background technique [0002] When pipe jacking is used in underground engineering, prefabricated pipes need to overcome the friction with the ground to continue jacking. Therefore, the jacking length of a single section is limited, and it is necessary to continuously increase construction wells according to the ground conditions to complete long-distance jacking. This leads to discontinuous construction and an increase in project cost, and the efficiency of pipe jacking construction is low. Although the jacking length can be increased by increasing the jacking force, it is necessary to increase the compressive strength of the pipeline, which leads to a significant increase in the cost. In the field of underground engineering jacking construction, how to increase th...

Claims

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Application Information

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IPC IPC(8): F16L1/036F16L1/06
CPCF16L1/036F16L1/06
Inventor 段军谢洪涛张云鹤杨建雄陈加楼周坚施春贤
Owner 保山市地下综合管廊投资管理有限责任公司
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