基于振动的斜拉索索力异常自动检测与处理  

Automatic Anomaly Detection and Processing for Tension Monitoring of Stay Cables based on Vibration

作　　者：陈岱杰 徐文城[2] 王凯 CHEN Dai-jie;XUWen-cheng;WANG Kai(Zhoushan Liuheng Bridge PhaseⅡConstruction Command Center,Zhoushan 316131,China;CCCC Highway Consultants Co.Ltd.,Beijing 100010,China)

机构地区：[1]舟山市六横大桥二期工程建设指挥部,舟山市316131 [2]中交公路规划设计院有限公司,北京市100010

出　　处：《公路》2024年第10期102-106,共5页Highway

摘　　要：斜拉索是斜拉桥的重要传力构件。因此,在斜拉桥的结构健康监测中获取有效的斜拉索索力是非常重要的。在对桥梁结构的长期监测中,由于传感器故障、系统故障、传输数据丢失、供电不稳定等各种原因导致的异常信号的出现几乎是不可避免的,并且极有可能导致后续分析质量的下降。依托福建某斜拉桥基于环境振动信号的斜拉索索力监测数据开展分析,结果表明,采用适当的最大响应值阈值,可以用相对简单的算法实现斜拉索振动测量的自动异常检测和处理。Stay cables are crucial force-transmitting components of cable-stayed bridges.Therefore,in structural health monitoring for the cable-stayed bridges,it is very important to obtain effective cable forces in the long-term monitoring of bridge structure,the occurrence of abnormal signals caused by sensor failure,system failure,transmission data loss,power supply instability and other reasons is almost inevitable,and it is very likely to lead to a deterioration in the quality of subsequent analyses.In this paper,the cable tensions based on ambient vibration signals for a bridge in Fujian Province are analyzed.The results show that a relatively simple algorithm can be used to realize automatic anomaly detection and processing of cable-stayed vibration measurement with appropriate maximum response threshold.

关 键 词：斜拉桥 斜拉索索力 振动测试 健康监测 异常信号 自动检测 

分 类 号：U446.2[建筑科学—桥梁与隧道工程] U433.38[交通运输工程—道路与铁道工程]