基于模糊数学理论建立了重载铁路隧道基底结构服役状态评价方法.遵循科学性、完备性等原则,把重载铁路隧道基底结构服役状态评价体系划分为目标层、准则层和指标层.准则层由基底结构材料劣化等5个主要影响因素组成,指标层则由混凝土强度等11个评价指标组成.依据相关规范、现场检测和监测资料以及数值计算结果确定评价指标判定标准.采用可拓层次分析法确定指标层各指标的权重,采用改进的灰度关联法确定准则层各因素的权重,采用模糊向量单值化法对重载铁路隧道基底结构服役状态进行评级.%Service state evaluation method of heavy haul tunnel basement structure is established based on fuzzy mathematical theory.According to the scientific principle and completeness,service state evaluation system of heavy haul railway tunnel basement structure is divided into target layer,rule layer and index layer.The rule layer is composed of 5 main factors including base structure material degrading,and the index layer is composed of 11 main factors including concrete strength.The index classification criteria is determined in accordance with relevant norms,on-site inspection and monitoring data,and numerical calculation results.Weights of factors in index layer are determined by extenics-based AHP method,Weights of factors in rule layer are determined by improved gray correlation method,and service state level of heavy haul railway tunnel basement structure is determined by fuzzy vector single-valued method.
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