在役高桩码头耐久性等级的灰色综合评估

Grey multi-hierarchical comprehensive evaluation on existing pile wharf′s durability grade

在研究高桩码头耐久性损伤特点及其结构特征的基础上,建立了包括指标层、准则层和目标层的多层次评估模型。结合专家经验和已有的工程实例研究成果,给出了各指标的评估标准及构件、结构耐久性等级划分标准。运用层次分析法原理,确定各层次的初始权重,再运用熵的性质对初始权重进行修正。最后以灰色关联度为准则对在役高桩码头构件和结构的耐久性进行综合分级评估,为工程人员鉴定、评估提供依据。并以浙江省某梁板式高桩码头为例进行实际应用分析,结果表明这种方法具有一定的实际应用价值。

Based on the research for the damage characteristics and specific structure of pile wharf, a multi - level assessment model with indexes level, criteria level and target level is established. With the experts＇ experience and the research of exiting projects, a grading standard for indexes, components and structure is given. AHP principle is used to establish all levels＇ initial weights, and then the initial weights are amended by entropy. Finally the durability grade of pile wharf and its components is evaluated comprehensively by taking the grey relation grade as the criteria. So people may appraise wharfs in accordance with them. In order to prove the method＇s practicality, an example is used to analyze the model, and then its result is used to prove that the method has practical value.