新疆理工职业大学，新疆，844004；
摘要:现代结构微变形健康监测技术对监测方法的精度、便捷性和成本提出了更高要求。传统监测方法难以满足工程需求，因此迫切需要新的技术手段来适应现代健康监测的需求。随着调频连续波（FMCW）毫米波雷达技术的快速发展，其已开始进入人们的视野。为此，本文以 FMCW 毫米波雷达为研究对象，阐述了地基干涉雷达测量的基本原理，介绍了地基雷达一维测距的基本原理，并对某桥梁进行了现场监测，获取并分析了动态挠度曲线、固有频率等竖向振动参数，以衡量桥梁的运营性能。结果表明，该监测结果符合铁路桥梁相关通用规范对铁路桥梁的要求。
关键词：健康监测技术；调频连续波（FMCW）；干涉测量法；结构位移测量
参考文献
[1]Liu Xiaoyang,Sun Guangtong,Li Feng,Qian An, Chen Li.:'Operational Performance Verification of High Speed Railway Simply Supported Box Girders Based on Ground Based Radar',China Railway Science,2020,41(01),pp50-56.
[2]Ma,Z.Choi,J.,Yang,L.,& Sohn,H.:'Structural displacement estimation using accelerometer and FMCW millimeter wave radar',Mechanical Systems and Signal Processing,pp.182.
[3]G.Zhang,Y.Wu,W.Zhao,J.Zhang.:'Radar-based multipoint displacement measurements of a 1200-m-long suspension bridge',ISPRS J.Photogramm.Remote Sens.167.,2020,pp71–84.
[4]Dhiyani,A.A.,& Pramudita,A.A.:'Multi-Point Small Displacement Detection of Bridge using FMCW Radar',Proceedings-11th Electrical Power,Electronics Communications,Control,and Informatics Seminar,EECCIS,2022,pp160–164.
[5]Liu Fuhai.:'Research on Maintenance and Repair Reinforcement of Expressway Bridges',Engineering Technology Research,2022,7(10),pp152-154.
[6]Liu X,Tong X,Ding K,et al.:'Measurement of long-term periodic and dynamic deflection of the long-span railway bridge using microwave interferometry',IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2015,8(9),pp4531-4538.
[7]Qin Wenxiao.:'Study on influencing factors and preventive measure for vertical resonance of high speed train-bridge system',Changsha:Central South University,2012.
[8]Xia H,Zhang N,Guo W.:'Dynamic interaction of train-bridge systems in high-speed railways Springer',Berlin.2018,pp1007:978-3.
[9]H.Liu.:'Robot Systems for Rail Transit Applications',Elsevier,2020.
