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Circumferential prestress strengthening tunnel segment and manufacturing method

A tunnel segment and prestressing technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as the difficulty of threading steel strands and weakening the strength of segments, so as to improve the anti-seepage performance, save manpower, and save injection costs. The effect of pulp material

Active Publication Date: 2015-12-23
JINAN RAILWAY TRANSPORT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is more difficult to pass the steel strands between the segments, and the reserved slots will weaken the strength of the segments

Method used

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  • Circumferential prestress strengthening tunnel segment and manufacturing method
  • Circumferential prestress strengthening tunnel segment and manufacturing method
  • Circumferential prestress strengthening tunnel segment and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] Embodiment: A kind of hoop prestressed reinforcement tunnel segment, its lateral structure is as follows figure 1 and Figure 6 As shown, including arch bottom block 1, the two ends of arch bottom block 1 are respectively provided with an adjacent block 2, the end of any adjacent block 2 is close to a connecting block 3, and the capping block is between the two connecting blocks 3 4;

[0041] The outer sides of the arch bottom block 1, the adjacent block 2, the connecting block 3 and the capping block 4 are all provided with reserved grooves 7, and there are at least three reserved grooves 7. After the end of each reserved groove is extended, a closed pure circle can be formed.

[0042] refer to Figure 2-Figure 4 As shown, there are reserved channels 6 inside the capping block 4. On the basis of having three reserved grooves 7, the number of reserved channels 6 is 6, and every two reserved channels 6 correspond to each other, and the corresponding The direction of ...

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Abstract

The invention relates to a circumferential prestress strengthening tunnel segment and a manufacturing method. A tunnel segment part mainly comprises an arch bottom block, wherein one adjacent block is arranged at each of two ends of the arch bottom block; a connection block clings to the end part of each adjacent block; a top sealing block is arranged between the two connection blocks; reserved grooves are formed in the outer side of the arch bottom block, the outer sides of the adjacent blocks, the outer sides of the connection blocks and the outer side of the top sealing block; reserved channels are formed in the inner part of the top sealing block; after steel strands pre-tighten the arch bottom block, the adjacent blocks, the connection blocks and the top sealing block through the reserved grooves, the end parts of the steel strands penetrate through the top sealing block and protrude out of the sealing block; each steel strand protruding out of the top sealing block is fixed by a lockset, so that the prestress application is realized; the arch bottom block, the adjacent blocks, the connection blocks and the top sealing block together form a closed cylindrical structure. Through the adoption of the tunnel segment provided by the invention, the integrality of the segment and the capability of resisting surrounding rock pressure can be effectively improved, and the manufacturing method is time-saving and material-saving.

Description

technical field [0001] The invention relates to the related fields of rail transit engineering, in particular to a circumferential prestressed reinforced tunnel segment and a manufacturing method thereof. Background technique [0002] With the rapid development of my country's transportation industry, the shield tunneling method is being used more and more in tunnel construction due to its advantages of high efficiency, safety, and environmental protection. [0003] When the segments are assembled in the shield tunnel, the segments between the hoops are connected by bolts, and it is difficult to effectively squeeze the gaps between adjacent hoop segments. During the post-operation period of the tunnel, due to the erosion of groundwater, uneven subsidence of the stratum and the dynamic load generated by the operation of the train, the gaps in the circumferential segment become vulnerable parts for water seepage and leakage, and the segment will be squeezed and staggered, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08
Inventor 王国富王丹路林海
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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