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Method for reinforcing fractured lining of existing railway tunnel

A technology of existing lines and railways, applied in tunnel lining, tunnel, shaft lining and other directions, it can solve problems such as low remediation efficiency, secondary cracking of lining, and falling blocks, so as to avoid secondary interference, resist surrounding rock pressure, and ensure safety. Effect

Inactive Publication Date: 2017-04-26
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, after the previous treatment measures, due to the large stress on the lining by the surrounding rock, coupled with the vibration of the train, the secondary cracking and block loss of the lining occurred many times; , resulting in a lower efficiency of remediation

Method used

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  • Method for reinforcing fractured lining of existing railway tunnel

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Embodiment Construction

[0015] A method for reinforcing a cracked lining of an existing railway tunnel, comprising a steel arch (4), a steel arch (5), a steel plate (3), a circumferential steel bar (2), a longitudinal connecting steel bar (1), and a steel plate reinforcing steel bar (6), the anchor rod (7), and the formwork concrete (8), characterized in that: the steel plate (3) is welded on the inner side of the outer edge of the steel arch (4) and the steel arch (5), and the steel plate (3) is welded according to the site The radian of the steel arch is bent, three circumferential steel bars (2) are erected between the steel arch (4) and the steel arch (5), and longitudinal connecting steel bars (1) are laid to form a circumferential steel mesh, and steel plates reinforce the steel bars (6) Weld the outside of the steel plate (3) between the steel arch (4) and the outer edge of the steel arch (5), weld the bolt (7) to the steel plate (3), and connect the steel plate (3) to the chisel. Concrete (8)...

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Abstract

The invention relates to a method for reinforcing a fractured lining of an existing railway tunnel. A first steel arch (4), a second steel arch (5), a steel plate (3), three circumferential steel bars (2), longitudinal connecting steel bars (1), steel plate reinforcing steel bars (6), anchor rods (7) and formwork concrete (8) are involved. The method is characterized in that the steel plate (3) is welded to the inner sides of the outer edges of the first steel arch (4) and the second steel arch (5) and bent according to the radians of the site steel arches; the three circumferential steel bars (2) are erected and the longitudinal connecting steel bars (1) are laid between the first steel arch (4) and the second steel arch (5) to form a circumferential steel bar net; the steel plate reinforcing steel bars (6) are welded to the outer side of the steel plate (3) between the outer edges of the first steel arch (4) and the second steel arch (5); the anchor rods (7) are welded to the steel plate (3); and the concrete (8) is poured between the steel plate (3) and a fresh face where broken concrete is chiseled away.

Description

technical field [0001] The invention relates to a method for reinforcing the cracked lining of an existing railway tunnel, which is particularly suitable for the rectification of cracked and broken tunnels. Background technique [0002] my country has a vast territory, and various natural conditions are very different. The engineering geological and hydrogeological conditions of the mountains that the tunnels pass through are complex and changeable. At the same time, there are tunnels and are limited by the design and construction technical conditions during the construction period. The increasing use time of existing railway tunnels and the increasing service life of concrete are also developing continuously, especially with the continuous improvement of the speed of existing railways and the large-scale construction of passenger dedicated lines. More and more, there is a strong urgency and necessity to study the prevention and remediation of tunnel diseases. In particular, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/18
CPCE21D11/00E21D11/183
Inventor 李德武高以健雷琳吴玉哲姚永刚何如来
Owner LANZHOU JIAOTONG UNIV
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