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MODERN TUNNELLING TECHNOLOGY 2023, Vol. 60 Issue (3) :208-216    DOI:
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Method for Comprehensive Evaluation of Longitudinal Crack Defect of Lining of Single-track Railway Tunnels
(1. Graduate Faculty of China Academy of Railway Sciences Corporation Limited, Beijing 100081; 2. China Railway Southwest Research Institute Co., Ltd., Chengdu 611731)
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Abstract Through finite element model calculation, the way the length and depth of cracks in railway tunnel lining impact structural safety has been analyzed, and structural safety sensitivity analysis has been conducted through the orthogonal test. On this basis, the comprehensive evaluation model for impact of lining cracks has been established that is based on the 3 characteristic parameters including length, width and depth (ratio), thus it is possible to conduct quantitative evaluation of how longitudinal crack defect of single-track railway tunnel lining impacts lining structure safety and to create the reference table for normative evaluation.
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YUAN Hongyun1
2 CHEN Liwei2 LIU Zhiqiang2
Keywords： Railway tunnel   Longitudinal crack   Evaluation method   Numerical calculation   Safety factor     
Abstract： Through finite element model calculation, the way the length and depth of cracks in railway tunnel lining impact structural safety has been analyzed, and structural safety sensitivity analysis has been conducted through the orthogonal test. On this basis, the comprehensive evaluation model for impact of lining cracks has been established that is based on the 3 characteristic parameters including length, width and depth (ratio), thus it is possible to conduct quantitative evaluation of how longitudinal crack defect of single-track railway tunnel lining impacts lining structure safety and to create the reference table for normative evaluation.
Keywords： Railway tunnel,   Longitudinal crack,   Evaluation method,   Numerical calculation,   Safety factor     
Cite this article:   
YUAN Hongyun1, 2 CHEN Liwei2 LIU Zhiqiang2 .Method for Comprehensive Evaluation of Longitudinal Crack Defect of Lining of Single-track Railway Tunnels[J]  MODERN TUNNELLING TECHNOLOGY, 2023,V60(3): 208-216
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