确定运营中的山区隧道二次衬砌开裂风险的主要影响因素

IF 3.5 Q1 ENGINEERING, MULTIDISCIPLINARY
Zhangtao Peng, Qian Fang, Qing Ai, Xiao-Qiang Jiang, Hui Wang, Xingchun Huang, Yong Yuan
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引用次数: 0

摘要

设计/方法/途径基于中国西南某山区隧道的检测数据,建立对数正态比例危害模型来描述二次衬砌裂缝的统计分布。结果结果表明,二次衬砌裂缝影响因素的重要程度依次为:裂缝在隧道剖面上的位置、围岩的岩体质量等级、二次衬砌完成时间和二次衬砌后的空隙。因此,裂缝在隧道剖面上的位置和围岩的岩体等级是所调查的山岭隧道二次衬砌裂缝的两个最重要的影响因素,应重点针对这两个方面采取相应的维护措施。 原创性/价值 本研究为确定二次衬砌裂缝的主要影响因素提供了普遍而有效的参考,以指导山岭隧道有针对性的维护。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identifying the dominant influencing factors of secondary lining cracking risk in an operating mountain tunnel
PurposeA risk-based method is proposed to identify the dominant influencing factors of secondary lining cracking in an operating mountain tunnel with weak surrounding rock.Design/methodology/approachBased on the inspection data from a mountain tunnel in Southwest China, a lognormal proportional hazard model is established to describe the statistical distribution of secondary lining cracks. Then, the model parameters are obtained by using the Bayesian regression method, and the importance of influencing factors can be sorted based on the absolute values of the parameters.FindingsThe results show that the order of importance of the influencing factors of secondary lining cracks is as follows: location of the crack on the tunnel profile, rock mass grade of the surrounding rock, time to completion of the secondary lining, and void behind the secondary lining. Accordingly, the location of the crack on the tunnel profile and rock mass grade of the surrounding rock are the two most important influencing factors of secondary lining cracks in the investigated mountain tunnel, and appropriate maintenance measures should be focused on these two aspects.Originality/valueThis study provides a general and effective reference for identifying the dominant influencing factors of secondary lining cracks to guide the targeted maintenance in mountain tunnels.
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来源期刊
International Journal of Structural Integrity
International Journal of Structural Integrity ENGINEERING, MULTIDISCIPLINARY-
CiteScore
5.40
自引率
14.80%
发文量
42
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