灰色关联度在预应力连续梁桥运营监控中的应用  

Application of grey correlation in operation monitoring of prestressed continuous beam bridge

作　　者：宋福春 刘鉴霆 谢利斌 李孟臣 张冠华 SONG Fu-chun;LIU Jian-ting;XIE Li-bin;LI Meng-chen;ZHANG Guan-hua(School of Transportation Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Highway Maintenance Technology Research and Development Center,Liaoning Transportation Planning&Design Institute,Shenyang 110111,China)

机构地区：[1]沈阳建筑大学交通工程学院,沈阳110168 [2]辽宁省交通规划设计院公路养护技术研发中心,沈阳110111

出　　处：《沈阳工业大学学报》2019年第6期693-698,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(51178279/E080801);辽宁省交通重点科研计划项目(201514);辽宁省自然科学基金资助项目(201602602);住房和城乡建设部科学技术项目(2016-K2-012)

摘　　要：为了尽早发现桥梁在其使用过程中存在的危险,确保桥梁结构的安全性,以某市绕城高速公路互通式立交桥的健康监测作为依托背景,根据现场大量的温度、位移和应变的实时监测数据,利用灰色关联分析法对所获得的监测数据进行分析研究.结果显示,第23跨温度对位移和应变的灰色关联度分别为0.8354和0.8945;第24跨温度对位移和应变的灰色关联度分别为0.7963和0.9299.结合实测数据的特征参数,表明温度对混凝土应变的影响大于温度对位移的影响.In order to find out the potential danger of bridge during service as early as possible and ensure the safety of bridge structure,based on the health monitoring of interchange overpasses of expressway around a city,the as-measured monitoring data were analyzed and studied using gray correlation analysis method according to massive real-time monitoring data of temperature,displacement and strain.The results show that the gray correlation between the 23 rd opening temperature and the displacement strain are 0.8354 and 0.8945,respectively.The gray correlation between the 24 th opening temperature and the displacement strain are 0.7963 and 0.9299,respectively.In combination with the characteristic parameters of measured data,it shows that the effect of temperature on the strain of concrete is greater than that on the displacement.

关 键 词：健康监测 传感器优化布设 灰色关联分析 海量数据处理 灰色预测模型 零-均值规范化 特征参数 数值分析 

分 类 号：TU997[建筑科学—市政工程]