Pre-stressing device for rectangular pipe jacking pipe joints and construction method thereof

A rectangular pipe jacking and prestressing technology, which is applied in the direction of pipes/pipe joints/fittings, pipe laying and maintenance, mechanical equipment, etc., can solve problems such as disconnection between pipe joints, seepage, water leakage, and affect the normal use of underground passages, and achieve Guarantee normal use and avoid loose effect

Active Publication Date: 2012-06-13
SHANGHAI GUANGLIAN ENVIRONMENTAL & GEOTECHNICAL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, after the jacking force of the pipe joints is withdrawn, seepage a

Method used

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  • Pre-stressing device for rectangular pipe jacking pipe joints and construction method thereof
  • Pre-stressing device for rectangular pipe jacking pipe joints and construction method thereof

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[0018] The embodiments of the present invention will be further described in detail below in conjunction with the description of the drawings, but this embodiment is not used to limit the present invention. Any similar structure and similar changes that adopt the present invention should be included in the protection scope of the present invention.

[0019] Such as figure 1 As shown, a rectangular pipe jacking pipe section prestressing device provided by an embodiment of the present invention includes a plurality of rectangular pipe sections, characterized in that: the device includes a plurality of prestressing components corresponding to each rectangular pipe section one-to-one ;

[0020] The prestressed component includes an embedded part, a prestressed rod, a connector, and a prestressed nut;

[0021] The embedded part is fixed on the corresponding rectangular pipe section, and a detachable fixed block is fixed at each of its front and rear ends, and each fixed block is provided...

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Abstract

The invention discloses a pre-stressing device for rectangular pipe jacking pipe joints and a construction method thereof, which relate to the technical field of underground tunnel construction and aim to solve the technical problem that joint parts can become loosened after the jacking forces of the pipe joints are removed. The device comprises a plurality of pre-stressing assemblies which correspond to all the rectangular pipe joints one to one; each pre-stressing assembly comprises an embedded part, a pre-stressing rod, a connector and a pre-stressing nut; the embedded part is fixed onto the corresponding rectangular pipe joint; the front end and the rear end of the embedded part are respectively and fixedly provided with a detachable fixed block; each fixed block is provided with a through hole for the pre-stressing rod to pass through; the front end and the rear end of the connector are respectively provided with a connecting hole with an internal thread; the face of the pre-stressing rod is provided with an external thread; the body of the pre-stressing rod passes through the through hole of the fixed block in the group; the front end of the pre-stressing rod is in threaded connection with the connecting hole at the rear end of the connector in the group; and the pre-stressing nut is arranged on the pre-stressing rod in the group in the manner of threaded connection, and is abutted with the fixed block at the rear end of the embedded part in the group. The device and the method provided by the invention are suitable for underground pipe jacking construction.

Description

technical field [0001] The invention relates to the construction technology of an underground tunnel (passage), in particular to a prestressing device for a rectangular pipe jacking joint and a construction method thereof. Background technique [0002] Rectangular pipe jacking technology is an extension of traditional pipe jacking construction technology, and it is a kind of underground excavation construction method for constructing underground pedestrian passages, subway station entrances and exits, and common trenches for underground pipelines. Rectangular passages use space more efficiently than circular passages and reduce underground excavation. It is used for pedestrians, vehicles and other underground passages without the need for ground paving procedures, which not only saves time but also reduces engineering costs. Therefore, in the construction of urban underground passages, more and more rectangular pipe jacking techniques are used. [0003] At present, when th...

Claims

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Application Information

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IPC IPC(8): F16L1/036F16L1/09
Inventor 方兆昌李淑海张志勇王中兵闪耀王元满
Owner SHANGHAI GUANGLIAN ENVIRONMENTAL & GEOTECHNICAL ENG CO LTD
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