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Shield tunneling prestress lining construction method and used prestressed pipe pieces

A technology of shield tunnel and construction method, which is applied to tunnel lining, tunnel, shaft lining and other directions, can solve the problems of difficult removal of air bubbles on the concrete surface, poor concrete pouring, and difficulty in meeting requirements, etc., and achieves simple and fast construction operations and reduces construction costs. The effect of short cost and working time

Inactive Publication Date: 2014-09-03
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 201110125181.7 discloses a shield tunnel prestressed composite lining water delivery tunnel, which adopts a separate design, and the ordinary segments are first assembled during the shield excavation process. Pouring prestressed concrete, this construction method is labor-intensive, time-consuming, and consumes a lot of materials, and because the air bubbles on the surface of the cast-in-place lining concrete are not easy to eliminate, and the reinforcement and corrugated pipes inside the concrete are dense, the concrete pouring is not dense
Low cost performance and long construction time, it is difficult to meet the requirements of modern engineering

Method used

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  • Shield tunneling prestress lining construction method and used prestressed pipe pieces
  • Shield tunneling prestress lining construction method and used prestressed pipe pieces
  • Shield tunneling prestress lining construction method and used prestressed pipe pieces

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Embodiment Construction

[0030] A prestressed segment, the segment 1 is provided with a plurality of steel strand channels 2 distributed along the axis, and on the circumference formed by the plurality of segment 1, the corresponding steel strand channels 2 communicate with each other, each steel strand An anchor groove 3 is provided on the stranded wire channel 2 .

[0031] The anchor grooves 3 are staggered on the circumference.

[0032] The anchor groove 3 opens to the inner side of the circumference.

[0033] A method for constructing prestressed lining of a shield tunnel by using the above prestressed segments, comprising the following steps:

[0034] 1. The steps of segment assembly for shield tunneling;

[0035] (1) Assemble the standard segment and the connecting segment symmetrically from the bottom of the shield tunnel upwards, the steel strand tunnel is positioned accurately, and there is no wrong connection.

[0036] (2) Arrange the segments with reserved anchorage grooves staggeredly i...

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Abstract

By means of the shield tunneling prestress lining construction method and the used prestressed pipe pieces, one half of the shield tunneling prestress tunnel construction period is shortened, and one half of investment can be reduced.

Description

technical field [0001] The invention relates to the construction field of shield tunnel prestressed tunnels, in particular to a shield tunnel prestressed lining construction method and used prestressed segments. Background technique [0002] With the continuous development of shield tunneling technology in our country, the prestressed design of shield tunnels has become a trend. Chinese patent 201110125181.7 discloses a shield tunnel prestressed composite lining water delivery tunnel, which adopts a separate design, and the ordinary segments are first assembled during the shield excavation process. Pouring prestressed concrete, this construction method is labor-intensive, time-consuming, and consumes a lot of materials, and because the air bubbles on the surface of the cast-in-place lining concrete are not easy to eliminate, and the reinforcement and corrugated pipes inside the concrete are dense, the concrete pouring is not dense. Low cost performance and long construction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
Inventor 孟海李志峰周山刘勇王军
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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