摘要
预应力钢筒混凝土管(PCCP)广泛应用于南水北调等大型水利工程,其内部的预应力钢丝断裂会直接导致爆管事故的发生。针对正交电磁法检测PCCP断丝的原理,采用有限元分析法构建了仿真模型,分析了断丝的轴向位置、周向位置对检测信号的影响,为实际检测提供理论指导,最后在PCCPDE 3 000×5 000管道进行实验验证,该模型真实地模拟了实际情况。
Prestressed concrete cylinder pipe(PCCP)is widely used in large-scale water conservancy projects such as South to North Water Diversion Project.According to the principle of detecting PCCP broken wire by orthogonal electromagnetic method,a simulation model was built by using finite element analysis method.The influence of the axial position and circumferential position of the broken wire on the detection signal was analyzed,which provides theoretical guidance for the actual detection.Finally,experimental verification was performed on the PCCP DE 3000×5000 pipeline,and the model simulated the actual situation.
作者
李润斌
封皓
刘欣
LI Run-bin;FENG Hao;LIU Xin(School of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China;Mathematical Department of Chengde Petroleum College,Chengde 067000,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2020年第7期94-99,共6页
Instrument Technique and Sensor
基金
国家自然科学基金项目(61873183)
河北省重点研发计划项目(19275401D)。
关键词
预应力钢筒混凝土管
正交电磁检测
有限元分析
无损检测
prestressed concrete cylinder pipe
electromagnetic detection
finite element analysis
non-destructive testing
