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Curved-jacked steel pipe section and jacking method

A technology of steel pipe jacking and pipe section, applied in the direction of pipe/pipe joint/pipe fitting, pipe laying and maintenance, mechanical equipment, etc., can solve the problems of inappropriateness, long welding time, complicated operation process, etc., to achieve easy operation and short construction period , the effect of convenient construction

Active Publication Date: 2011-05-25
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This joint processing method not only has problems such as long welding time and complicated operation process
More importantly, due to the rigidity of its joints, steel pipes are not suitable as pipe materials for curved pipe jacking.

Method used

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  • Curved-jacked steel pipe section and jacking method
  • Curved-jacked steel pipe section and jacking method
  • Curved-jacked steel pipe section and jacking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A curved steel pipe jacking joint is characterized in that sockets and sockets are respectively provided at both ends of the steel pipe joint. In view of the difference between the steel pipe and the reinforced concrete pipe, a stiffening ring is provided at the end of the socket and the socket respectively, and a longitudinal stiffening plate is arranged between the stiffening ring and the steel pipe to increase the circumferential stiffness of the steel pipe joint joint and reduce the steel pipe during jacking. For the deformation of the joint, the longitudinal stiffener is set to increase the stiffness of the steel pipe to bear the axial force.

[0015] Such as figure 1 The shown pipe joint 1 of the present invention is about 2.5-5m in length, the pipe joint at one end of the pipe joint 1 is a socket 2 , and the other end of the pipe joint is a socket 3 . A stiffening ring 4 (also known as a ring stiffening plate) along the entire pipeline is provided at the socket ...

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Abstract

The invention discloses a curved-jacked steel pipe section. The curved-jacked steel pipe section is characterized in that: a pipe joint at one end of the steel pipe section is a socket, and the pipe joint at the other end is a bell mouth; circular stiffening rings are arranged on the bell mouth and socket end parts; longitudinal stiffening plates are arranged between each circular stiffening ring and a steel pipe; wedged cushion blocks are arranged between the circular stiffening rings of two steel pipe sections; and the circular stiffening rings of the two steel pipe sections are connected by bolts. Flexible connection is realized between the pipe sections provided by the invention in curved pipe jacking, and is converted into rigid connection after the jacking is finished. The curved steel pipe jacking pipe section has the advantages of simple structure, compact arrangement, relatively lower cost and relatively shorter construction period, and is relatively easier to operate in construction.

Description

Technical field: [0001] The invention relates to the application of curved pipe jacking technology on steel pipes. Specifically, through the present invention, the steel pipes are flexibly connected during jacking, and curved pipe jacking is carried out. After the jacking is completed, a small amount of cutting and welding are used to transform the steel pipes into rigid ones. Connection, a special pipe joint type and construction method that exerts the performance of steel pipes. Background technique: [0002] Pipe jacking construction technology is a non-excavation technology for laying underground pipelines that better protects the environment. Under the condition of not disturbing or slightly disturbing the soil structure outside the pipe, with the help of the thrust of the jacking equipment such as the main jacking pump, the tool pipe or roadheader is passed from the working well through the soil layer along the line and enters the receiving well; at the same time, A c...

Claims

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Application Information

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IPC IPC(8): F16L1/028
Inventor 郑国兴许龙钟俊彬曹玉萍吴绍珍
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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