【摘要】 为评价在役隧道衬砌结构的健康状态,文章运用层次分析法的理念建立了由目标层、因素层、指标层构成的健康诊断指标体系,确定了在役隧道衬砌结构健康状态诊断指标的4个评价等级;采用极差变换确定了各诊断指标的无量纲评价标准;运用模糊理论、灰色系统理论和信息熵理论,构建了基于非对称贴近度判定隧道结构健康状态的评价模型。工程实例应用表明,评价模型能很好地反映隧道衬砌结构的实际健康状态。采用改进的灰色关联度法和熵值法综合确定指标权重,克服了主观随意性强的缺点,提高了权重系数的可靠度;利用非对称贴近度进行决策分析,确保诊断结果更符合客观实际。更多还原

【Abstract】 In order to evaluate the condition of tunnel lining structures in operation, a diagnosis index system composed of a target layer, factors layer and index layer was established by applying the concept of analytic hierarchy process to determine four evaluation grades for operated tunnel lining structure conditions. The non-dimensional evaluation criteria for each diagnosis index was determined by using the range transformation method,and an evaluation model for judging the condition of the tunnel structure based on the asymmetric closeness degree was set up by applying the fuzzy theory, the gray system theory and the information entropy theory. The project demonstrates that the evaluation model can properly reflect the real condition of the tunnel lining structure. The comprehensive index weights determined by the improved gray relevancy method and entropy value method can overcome the shortcomings of subjective arbitrariness and increase the reliability of weight coefficients, and the analysis based on the asymmetric closeness degree guarantees that the diagnostic results are more consistent with the objective reality.更多还原