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Existing line tunnel lining structure of railway and construction method thereof

A technology for existing lines and tunnels, which is applied to the lining structure of existing railway line tunnels and its construction, and can solve problems affecting the strength of the existing lining structure, disturbance of the existing lining, and potential safety hazards, so as to reduce potential safety hazards and strengthen construction Convenience and the effect of increasing the service life

Active Publication Date: 2019-03-26
CHINA RAILWAY FIRST GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to chisel off the concrete on the existing lining surface when opening a trapezoidal circumferential groove on the surface of the existing lining. On the wired rails, it will cause damage to the rails, and there is a big safety hazard; at the same time, it will cause disturbance to the existing lining and affect the structural strength of the existing lining

Method used

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  • Existing line tunnel lining structure of railway and construction method thereof
  • Existing line tunnel lining structure of railway and construction method thereof
  • Existing line tunnel lining structure of railway and construction method thereof

Examples

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Embodiment Construction

[0047] Such as figure 2 and image 3 The tunnel lining structure of an existing railway line is shown, which includes a multiple steel arch frame 2 arranged on the inner side of the existing lining 1, and a mold for pouring the existing lining 1 and the multiple steel arch frame 2 into one Cast-in-place reinforced concrete lining, the steel arch 2 includes an upper steel arch segment 2-3 and steel arch units symmetrically arranged on both sides of the upper steel arch segment 2-3, the steel arch unit Including the lower steel arch segment 2-1 and the middle steel arch segment 2-2, the lower steel arch segment 2-1, the middle steel arch segment 2-2 and the upper steel arch segment 2 -3 are all fixed on the inner side of the existing lining 1 by expansion bolts 4, and the cast-in-place reinforced concrete lining includes a plurality of linings arranged along the length direction of the existing line tunnel and arranged between two adjacent steel arches 2 A bushing segment 3 ,...

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Abstract

The invention discloses an existing line tunnel lining structure of a railway and a construction method thereof. The tunnel lining structure comprises multiple steel arch frames and a cast-in-place reinforced concrete lining. The construction method comprises the steps of 1 existing lining chiseling, 2 determining the installation positions of the steel arch frames, 3 processing and manufacturingthe steel arch frames, 4 transporting the steel arch frames, 5 erecting the steel arch frames, 6 applying anchors, 7 implanting drill nails, 8 laying lining steel bars, 9 applying lining concrete and10 grouting reinforcement. The structure is reasonable, the cast-in-place reinforced concrete lining is closely connected with the existing lining, the existing lining can be effectively reinforced without the influence on an existing lining structure, external formworks can be reused during the concrete pouring process, the construction cost is effectively reduced, and the steel arch frames are used as side formworks, do not need to be dismantled after being used and can be stressed together with the existing lining and work together to greatly improve the safety of the cast-in-place reinforced concrete lining structure.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering reinforcement, and in particular relates to an existing railway line tunnel lining structure and a construction method thereof. Background technique [0002] At present, most of the tunnels in operation in my country have quality defects and diseases such as voids behind the existing lining, insufficient thickness of the existing lining, water leakage, and cracking of the existing lining, and the service status is worrying. Due to the concealment of tunnel defects and diseases, the sudden occurrence of tunnel diseases, and the large interference of tunnel disease remediation, tunnel diseases have become more and more serious, and the treatment is seriously insufficient, which has seriously endangered the safety of tunnel operation. Cracks in the existing lining of the tunnel and insufficient thickness of the existing lining are common problems of the existing lining. When the damage to ...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/10
CPCE21D11/00E21D11/10E21D11/102E21D11/107
Inventor 陈文斗周栋林覃胜静国锋刘涛毕张龙赵少强王毅赵静冯四超沈捷孙卿林俊安马秉国李海珍黄瑞忠
Owner CHINA RAILWAY FIRST GRP CO LTD
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