A hoop prestressed reinforced tunnel segment and its manufacturing method

A tunnel segment and prestressing technology, applied in tunnels, tunnel lining, earthwork drilling, etc., can solve the problems of weakening segment strength and difficulty in passing steel strands, so as to improve water seepage resistance, save manpower, and improve stability. sexual effect

Active Publication Date: 2017-08-22
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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  • A hoop prestressed reinforced tunnel segment and its manufacturing method
  • A hoop prestressed reinforced tunnel segment and its manufacturing method
  • A hoop prestressed reinforced tunnel segment and its manufacturing method

Examples

Experimental program
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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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PUM

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Abstract

The invention relates to a circumferential prestressed reinforced tunnel segment and a manufacturing method thereof. The tunnel segment mainly includes the arch bottom block, and the two ends of the arch bottom block are respectively provided with an adjacent block, and the end of any adjacent block is close to a connecting block, and there is a capping block between the two connecting blocks; the arch The outer sides of the bottom block, adjacent blocks, connecting blocks and capping blocks are all provided with reserved grooves, and the interior of the capping block has reserved channels; the steel strand connects the arch bottom block, adjacent blocks, connecting blocks and After the capping block is pre-tightened, the end penetrates and protrudes from the capping block, and the steel strand protruding from the capping block is fixed by a lock to realize the application of prestress; Form a closed cylindrical structure. The tunnel segment provided by the invention can effectively improve the integrity of the segment and the ability to resist surrounding rock pressure, and the manufacturing method saves time and materials.

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 Patents(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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