摘要
隧道衬砌结构开裂是隧道养护工作中需重点防治的病害,隧道智慧管养的发展急需可推广应用的隧道衬砌结构裂缝病害定量评价方法。引入裂缝图像自动识别技术,融合乘积标度法和规范要求建立了单裂缝病害和衬砌结构区间段多裂缝病害量化评价指标体系,提出了指标阈值确定方法。单裂缝病害诊断方法以衬砌裂缝的长度、宽度作为主要评价指标,深度、方向和发展性作为辅助评价指标;多裂缝病害诊断方法以衬砌裂缝的长度、宽度作为主要评价指标,深度、方向、发展性和分布密度作为辅助评价指标。指标阈值确定既考虑了均匀分布函数概率分布特性,又结合了隧道结构受力安全性特点,并对评价方法的分值进行了系统的无量纲标准化处理,编制了可推广应用的软件。案例分析显示本方法基本科学合理,为实现隧道开裂病害智能识别和养护方案自动决策提供了新途径。
Cracking in tunnel lining structures is a critical issue requiring effective prevention and control during tunnel maintenance.The development of intelligent tunnel management and maintenance urgently requires a quantitative evaluation method for tunnel lining cracking diseases that is practical and broadly applicable.This study introduces an automatic crack image recognition technology and establishes a quantitative evaluation index system and threshold determination method for both single crack diseases and multi-crack diseases in tunnel lining sections.This is achieved by integrating the product scale method with established specification requirements.For single crack disease diagnosis,the primary evaluation indexes are crack length and width,with depth,orientation,and development serving as auxiliary indexes.For multi-crack disease diagnosis,the main indexes remain crack length and width,while depth,orientation,development,and distribution density are included as supplementary indexes.Threshold determination incorporates the probability distribution characteristics of uniform distribution functions alongside the safety characteristics of tunnel structures under stress conditions.The evaluation scores have been systematically standardized to eliminate dimensional inconsistencies,and software has been developed for practical application.A case analysis shows the scientific validity of this method,providing a novel approach to intelligent identification of tunnel cracking diseases and automated maintenance decision-making.
作者
沈才华
苗淼
鲍希琰
姜育科
SHEN Caihua;MIAO Miao;BAO Xiyan;JIANG Yuke(College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,P.R.China;Department of Transport of Jiangsu Province,Nanjing 210001,P.R.China;CCCC Tunnel Bridge(Nanjing)Technology Company Limited,Nanjing 211800,P.R.China)
出处
《重庆大学学报》
北大核心
2025年第2期62-73,共12页
Journal of Chongqing University
基金
国家自然科学基金(52278400,41830110)
江苏省交通运输厅科技计划项目(2022Y04)
中交养护集团2020年重大科技研发项目(27100020Y251,27100020Y248)。
关键词
隧道衬砌
乘积标度法
裂缝病害
病害诊断
层次分析法
tunnel lining
product scaling method
crack disease
disease diagnosis
analytic hierarchy process
