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High-speed railway tunnel structure state evaluation method

A technology of high-speed railway and tunnel structure, applied in the field of three-level fuzzy comprehensive evaluation model

Inactive Publication Date: 2017-09-08
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently, there are "Standards for Assessment of Deterioration of Railway Bridge and Tunnel Buildings—Tunnels" (TB / T2820.2-1997), "Non-destructive Testing Procedures for Lining Quality of Railway Tunnels" (TB10223-2004), and "Interim Regulations on the Safety Grade Assessment of Railway Tunnel Linings". (Tieyunhan [2004] No. 174) and other standards or regulations classify and grade railway tunnel diseases, and give disease deterioration standards, grade evaluation methods and judgment standards, which are only applicable to single-track operating railways with a speed of less than 160km per hour Tunnels, and currently there is no evaluation system for tunnel status and structural safety evaluation standards for high-speed railways

Method used

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  • High-speed railway tunnel structure state evaluation method
  • High-speed railway tunnel structure state evaluation method
  • High-speed railway tunnel structure state evaluation method

Examples

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Embodiment 1

[0073] This embodiment relates to an example of commenting on the structure of a high-speed rail tunnel, including the following steps:

[0074] A high-speed railway tunnel in the seasonally frozen soil area in northern my country has a design speed of 300km / h. The surrounding rocks in the tunnel body are grade Ⅱ~Ⅴ, and the two ends of the tunnel are grade Ⅴ. Through non-destructive testing and on-site inspection of the DK100+100~DK100+120 section, it was found that a small amount of water leaked from the construction joints near the side walls of the opening. There are local annular cracks on the surface of the lining vault and side walls accompanied by water seepage. The crack length is 3.0m and width is 2mm, and the crack development speed is slow. Part of the water seepage part of the side wall freezes in winter, but there is no invasion limit.

[0075] Evaluation Process and Results

[0076] According to the test results, the primary factor of the tunnel structure state...

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Abstract

The invention relates to a high-speed railway tunnel structure state evaluation method. The method mainly comprises the following steps of 1) establishing a three-stage evaluation factor set of high-speed railway quality and numbering each factor; 2) by combining an analytic hierarchy process with an extensible evaluation method, determining a weight of each evaluation factor; and 3) determining a comprehensive result of influence of all factors on a high-speed railway tunnel structure by adopting a three-stage fuzzy comprehensive evaluation method. In combination with actual engineering examples, the rationality and applicability of the evaluation method are verified; and the method can provide theoretical support for scientific management of high-speed railway tunnels in an operation period at the present stage.

Description

technical field [0001] The invention relates to the technical field of health status evaluation of high-speed railway tunnels, in particular to a three-level fuzzy comprehensive evaluation model for evaluating and adjusting the health status of railway tunnels. Background technique [0002] China has become the country with the longest operating mileage, the highest operating speed and the largest scale of high-speed railways in the world. By the end of 2015, the operating mileage of high-speed railways had reached 19,000 kilometers, ranking first in the world, including more than 2,000 kilometers of tunnels. [0003] Tunnel is an important infrastructure in high-speed rail transportation, and its performance and service status directly determine the operational capability and safety of the entire line. Smaller tunnel defects or diseases in normal-speed railway or heavy-duty railway tunnels may cause catastrophic consequences affecting traffic safety in high-speed railway t...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/08
CPCG06Q10/06393G06Q50/08
Inventor 马伟斌张千里赵勇王志伟付兵先邹文浩杜晓燕郭小雄马超锋牛亚彬安哲立李尧赵鹏张文达
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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