基于PS-InSAR技术的大跨度桥梁结构变形监测综述  

REVIEW OF PS-InSAR-BASED LONG-SPAN BRIDGES STRUCTURAL DEFORMATION MONITORING

作　　者：周云[1,2] 郝官旺 危俊杰 杜宗 刘畅 朱茂 ZHOU Yun;HAO Guan-wang;WEI Jun-jie;DU Zong;LIU Chang;ZHU Mao(College of Civil Engineering,Hu’nan University,Changsha,Hu’nan 410082,China;Key Laboratory for Damage Diagnosis of Engineering Structures of Hu’nan Province,Hu’nan University,Changsha,Hu’nan 410082,China;China Construction Third Bureau First Engineering CO.,LTD,Wuhan,Hubei 430020,China;Beijing Vastitude Technology Co.,Ltd,Beijing 100081,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]湖南大学工程结构损伤诊断湖南省重点实验室,湖南长沙410082 [3]中建三局第一建设工程有限责任公司,湖北武汉430020 [4]北京东方至远科技股份有限公司,北京100081

出　　处：《工程力学》2025年第4期25-37,共13页Engineering Mechanics

基　　金：国家自然科学基金面上项目(52278306);湖南省重点研发计划项目(2022SK2096);湖南省交通运输厅科技进步与创新项目(201912)。

摘　　要：面对量大面广的大跨度桥梁,实施时空覆盖连续、高效经济的轻量化结构健康监测,对保障桥梁运营安全、实现智慧桥梁和智慧交通具有重要现实意义。该文从永久散射体合成孔径雷达干涉(PS-InSAR)关键技术、桥梁结构变形监测以及影响因素3个方面,全面总结了PS-InSAR技术监测桥梁结构变形的基本原理、技术特点、适用范围和研究进展。在关键技术方面,系统总结了影像配准、PS点识别、相位解缠、变形恢复4个方面的最新研究成果;综述了PS-InSAR技术在桥梁视线向变形监测以及三维变形反演中的应用,分析了桥梁方向和表面散射特性、相位解缠精度以及热膨胀模型对该技术测量精度的影响;利用该技术对某钢拱桥的结构变形进行了测试,验证了所提方法的可行性。归纳总结了PS-InSAR技术监测桥梁变形研究,讨论了未来可能的发展方向。文献综述表明:基于PS-InSAR技术的桥梁变形监测方法有显著的优势和广阔的应用前景,有望为大跨度桥梁的运维和风险管理提供技术支持。The implementation of a lightweight structural health monitoring with continuous spatiotemporal coverage and high cost-effectiveness is of great practical significance for ensuring the bridge operation safety and realizing Intelligent Bridge and Intelligent Transportation System.The fundamental principles,technical features,application scope and research progress of the Permanent Scatterer Synthetic Aperture Radar Interferometry(PSInSAR)technique are comprehensively summarized from three aspects:key technology,bridge structural deformation monitoring,and influencing factors.Regarding the key technology,the latest research results of image co-registration,PS points detection,phase unwrapping,and deformation recovery were systematically summarized.The application of the PS-InSAR in LOS(line of sight)deformation monitoring and three-dimensional deformation inversion were reviewed.The influence of bridge direction,surface scattering characteristics,phase unwrapping accuracy and thermal dilation model on the measurement accuracy of this technology were analyzed.The technology was further used to monitor the structural deformation of a steel arch bridge,and the feasibility of the proposed method are verified.The research on bridge deformation monitoring by the PS-InSAR technology is summarized,and possible future directions are discussed.The literature review indicates that the PS-InSAR-based method for monitoring bridge deformation has significant advantages and vast application prospects,which is expected to provide technical support for the operation and risk management of long-span bridges.

关 键 词：桥梁工程 结构健康监测 综述 PS-INSAR 变形监测 

分 类 号：U446[建筑科学—桥梁与隧道工程]