DTW距离在潮汐河段桩顶应变监测异常识别中的应用  

Application of DTW distance for anomaly identification of strain monitoring in the tide river

作　　者：唐勇[1] 王江明 陈志坚[1] 耿方方[1] 

机构地区：[1]河海大学地球科学与工程学院,南京210098 [2]重庆市市政设计研究院,重庆400020

出　　处：《工程勘察》2011年第7期78-80,89,共4页Geotechnical Investigation & Surveying

基　　金：国家十一五科技支撑资助项目(2006BAG04B05);国家重点基础研究发展计划(973计划)(2002CB412707)

摘　　要：潮汐河段的应变监测数据干扰因素较多,并且不易检测,传统检测方法存在一定的局限性。DTW距离是一种波形相似性识别参数,针对潮汐河段基础工程应变监测数据具有周期性的特点,利用后续波段和历史波段相似性的差异,实现了异常波段的检测。结果表明,DTW技术能将受干扰的数据检测出来,从而提高监测精度。The precision of strain monitoring data in tidal river could be influenced by many factors and it is difficult to detect abnormal signals.There are some limitations in the traditional detection methods.DTW distance is based on the comparison of wave shapes to indentify model parameters.The strain monitoring data of foundation work caused by river tide has some periodicity,abnormal wave band will be detected by the differencing between the later wave bands and the former.The result shows that DTW can effectively detect the abnormal wave bands so as to improve the accuracy of monitoring.

关 键 词：监测数据 周期性 异常识别 DTW距离 

分 类 号：TV698.11[水利工程—水利水电工程]