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Anchor cable construction method for rectangular top pipe joint connecting and strengthening

A rectangular pipe jacking and construction method technology, applied in the direction of pipes/pipe joints/fittings, pipe laying and maintenance, mechanical equipment, etc. problems, to achieve the effect of reducing maintenance costs in the later period, low overall cost and simple construction process

Active Publication Date: 2015-10-14
CHINA RAILWAY NO 2 ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art that the joints of pipe jacking joints are easily opened and leak due to longitudinal external forces, lateral thrusts and longitudinal displacements, and provide an anchor cable construction method for the connection and reinforcement of rectangular pipe jacking joints , this construction method can improve the stability of the rectangular pipe jacking channel itself, thereby solving the problem that the joints of the pipe jacking joints are easy to open and leak due to external forces

Method used

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  • Anchor cable construction method for rectangular top pipe joint connecting and strengthening
  • Anchor cable construction method for rectangular top pipe joint connecting and strengthening
  • Anchor cable construction method for rectangular top pipe joint connecting and strengthening

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Embodiment

[0034] In this embodiment, the street crossing passage of a large underground shopping mall in a certain area is taken as an example. The street crossing underground passage is constructed using the rectangular pipe jacking method. Pipe jacking may produce lateral unbalanced thrust, so it is necessary to strengthen the longitudinal stiffness of each pipe jacking channel, such as Figure 1 to Figure 6 As shown, this embodiment adopts the anchor cable construction method of connecting and reinforcing rectangular pipe jacking pipe joints, including the following steps:

[0035] (1) Construction preparation: understand the geological conditions and hydrological conditions of the strata where the rectangular pipe jacking is located, and make preparations for construction tools and planning for the construction process;

[0036] (2) Measuring and releasing hole position: Correspondingly open a plurality of prestressed through holes on the end face of the rectangular pipe jacking pip...

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Abstract

The invention discloses a top pipe construction technology. An anchor cable construction method for rectangular top pipe joint connecting and strengthening comprises the steps of construction preparing, hole forming position measuring, anchor cable placing, anchorage device installing, steel strand tensioning, steel strand locking, primary grouting and secondary grouting. According to the construction method, prestress through holes are punched in the end faces of rectangular top pipes in the axial directions of the top pipes, an anchor cable penetrates through the prestress through holes to connect the multiple rectangular top pipes from a starting well to a receiving well, the anchor cable is tensioned and locked, grouting fixing is conducted, and therefore pipe joints are connected integrally in the longitudinal direction through the prestress steel strand, the longitudinal rigidity of a whole top pipe channel is improved, the stability of the top pipe channel is improved effectively, the construction technology is simple, the influences on the top pipe channel during later-period construction of buildings or structures on the periphery of the top pipe channel are reduced, the later maintenance cost is reduced, and the comprehensive construction cost is low.

Description

technical field [0001] The invention relates to a pipe jacking construction technology, in particular to an anchor cable construction method for connecting and reinforcing rectangular pipe jacking joints. Background technique [0002] Pipe jacking construction is a non-excavation construction method, which refers to a pipeline burial construction technology that does not excavate or excavates less. The pipe jacking method is to use the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipeline and the surrounding soil, push the pipeline into the soil according to the designed slope, and transport the earth away. After one section of pipeline has been jacked into the soil layer, the second section of pipeline will continue to be jacked. The principle is to push the tool pipe or roadheader from the working pit through the soil layer to the receiving pit with the help of the thrust of the main jack oil cylinder, the pipeli...

Claims

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Application Information

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IPC IPC(8): F16L1/036
CPCF16L1/036
Inventor 刘杰陈卓陈强夏炜洋王安春
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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