基于灰色聚类法的某公路混凝土桥梁耐久性评估

摘要

基于灰色聚类评估理论,建立某公路混凝土桥梁的耐久性评估模型.依据《公路桥梁技术状况评定标准》选取了蜂窝麻面、剥落掉角、混凝土保护层厚度等十个参数作为综合评价指标,采用相似系数法确定指标的客观权重,根据《公路桥涵养护规范》,将耐久性划分为3个等级,然后构建白化权函数并结合实际观测值,通过对灰色聚类系数的计算,再得出某公路混凝土桥梁各跨梁体耐久性等级的评价结果.%Based on the gray clustering evaluation theory, the durability evaluation model of a concrete bridge is established. According to the "Highway Bridge Technology Condition Evaluation Criteria", ten parameters such as honeycomb, stripping angle and thickness of concrete protective layer were selected as comprehensive evaluation indexes. The similarity coefficient method was used to determine the objective weight of the index. According to the "Highway Bridge and Cannon Conservation Standard", the durability is divided into three grades, and then the whitening weight function is constructed, and combined with the actual observation value , through the calculation of the gray clustering coefficient, the evaluation result of the durability grade of the concrete bridge of a highway is obtained.