基于相对差异函数的砌石隧道安全性评价

Safety Evaluation of Masonry Lining Tunnels Based on Relative Difference Function

砌石衬砌隧道作为铁路线路上的重要工程,运营过程中受到多种因素的共同作用,隧道内经常出现影响运营安全的衬砌病害。以成都局砌石衬砌病害资料为基础,统计分析砌石衬砌病害分布情况,根据层次分析法原理建立了砌石衬砌隧道安全评价指标体系,引入相对差异函数确定指标对各安全等级的隶属度,通过可变识别模型计算砌石衬砌隧道的安全评价值。通过对典型隧道进行评价表明,引入相对差异函数对砌石衬砌隧道安全进行评价是可行的,而且评价结果更加合理,可为砌石衬砌隧道的维护提供依据。

Masonry lining is very important in railway line, and it is influenced by many factors in operating process. Lining diseases may often have negative effects on running safety. Based on masonry lining disease information of Chengdu Bureau, by analyzing the distribution of masonry lining diseases, this paper established masonry lining tunnel safety evaluation system according to AHP, introduced relative difference function to identify indicators for each membership level of security and obtained the value of the safety evaluation masonry lining of the tunnel through a variable recognition model. The evaluation of typical tunnel shows that using relative difference function masonry lining tunnel safety evaluation is feasible, and the evaluation results are more reasonable,which can provide the basis for the maintenance of masonry lining of the tunnel.