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桥梁工程中非接触位移测量技术研究综述

晏班夫,  欧阳康,  梁才

晏班夫, 欧阳康, 梁才. 桥梁工程中非接触位移测量技术研究综述[J]. 交通运输工程学报, 2024, 24(1): 43-67. doi: 10.19818/j.cnki.1671-1637.2024.01.003
引用本文: 晏班夫, 欧阳康, 梁才. 桥梁工程中非接触位移测量技术研究综述[J]. 交通运输工程学报, 2024, 24(1): 43-67. doi: 10.19818/j.cnki.1671-1637.2024.01.003
YAN Ban-fu, OUYANG Kang, LIANG Cai. Review on research of non-contact displacement measurement technologies in bridge engineering[J]. Journal of Traffic and Transportation Engineering, 2024, 24(1): 43-67. doi: 10.19818/j.cnki.1671-1637.2024.01.003
Citation: YAN Ban-fu, OUYANG Kang, LIANG Cai. Review on research of non-contact displacement measurement technologies in bridge engineering[J]. Journal of Traffic and Transportation Engineering, 2024, 24(1): 43-67. doi: 10.19818/j.cnki.1671-1637.2024.01.003

桥梁工程中非接触位移测量技术研究综述

doi: 10.19818/j.cnki.1671-1637.2024.01.003
基金项目: 

国家自然科学基金项目 U23A20662

广西科技计划项目 2022AB23045

详细信息
    作者简介:

    晏班夫(1972-),男,湖南冷水江人,广西大学教授,工学博士,从事工程结构智慧测试与评估、UHPC桥梁新结构研究

  • 中图分类号: U446.1

Review on research of non-contact displacement measurement technologies in bridge engineering

Funds: 

National Natural Science Foundation of China U23A20662

Science and Technology Plan Project of Guangxi Province 2022AB23045

More Information
Article Text (Baidu Translation)
  • 摘要:

    系统总结了视觉测量、微波雷达与激光测振这3种非接触位移测量技术的测量方法、测量原理与工程应用影响因素,阐述了非接触位移测量技术在桥梁工程动位移测量、模态识别、索杆张力测试中的创新成果,探讨了非接触位移测量面临的关键挑战与后续研究发展方向。分析结果表明:非接触位移测量方法能够实时获取桥梁结构动位移、自振频率、模态振型等信息,测试精度受硬件、算法、测量距离和环境条件等多重因素影响;视觉测量技术易低成本实现面内多目标位移的实时测量,但对环境条件变化较为敏感,且一般应设置靶标,适用于短距离长期或远距离短期情形下的位移监测;微波雷达具有抗天气干扰能力强、测量距离远(可达2 km)、成本可接受、全天候全天时工作、可长期监测等特点,一般也需设置角反射器提高径向位移测试精度;激光测振技术具有微米级位移测量精度,且抗电磁干扰能力强,但难以实现远距离多点同步测量,穿透性较差,易受天气影响,且设备昂贵,适用于短期径向位移监测;应针对桥梁结构监测时长、测量距离、环境条件、单(多)点监测需求、测量精度要求等的不同,选用合适的非接触测量方法;未来可通过提高硬件系统性能提升远距离多点同步测试能力,发展各种自适应环境(光照、大气)扰动校正算法提高位移测试精度和可靠性,将视觉测量、微波雷达、激光测振等技术与加速度计、全站仪、GPS等测试手段进行多源信息融合,通过相互校准减少不确定性,提升不同环境条件下的测量稳健性,实现全天候三维测试。

     

  • 图  1  视觉位移测量系统

    Figure  1.  Visual displacement measurement system

    图  2  FNCC算法子集搜索

    Figure  2.  Subset search algorithm of FNCC

    图  3  IC-GN算法流程

    Figure  3.  Flow of IC-GN algorithm

    图  4  DIC视觉位移测量方法的工程应用

    Figure  4.  Engineering applications of DIC visual displacement measurement method

    图  5  微波雷达测量系统

    Figure  5.  Measurement system of microwave radar

    图  6  CW雷达位移测量

    Figure  6.  Displacement measurement of CW radar

    图  7  线性调频连续微波信号

    Figure  7.  Linear frequency modulation continuous wave signal

    图  8  频率与时间关系

    Figure  8.  Frequency-time relationship

    图  9  多目标测量频率与时间关系

    Figure  9.  Frequency-time relationship of multi-target measurements

    图  10  微波雷达位移测量方法工程应用

    Figure  10.  Engineering applications of microwave radar displacement measurement method

    图  11  激光测振位移测量系统

    Figure  11.  Laser vibration displacement measurement system

    图  12  激光测振位移测量方法的试验研究与工程应用

    Figure  12.  Experimental research and engineering applications of laser vibration displacement measurement method

    表  1  非接触位移测量方法对比

    Table  1.   Comparison of non-contact displacement measurement methods

    测量特征与产品 DIC视觉位移测量方法 微波雷达位移测量方法 激光测振位移测量方法
    测量精度 面内测距精度较高,面外较低 面内测距精度低,面外较高 面内测距精度低,面外很高
    测量距离 远距离大视场与精度矛盾,一般小于500 m,与环境条件有关 可实现大范围远距离测量,可大于1 000 m 远距离一般不超过300 m
    测量形式 可多点、全局测量 可多点测量 可多点测量,一般需要多台设备
    恶劣天气影响 易受影响 影响小 易受影响
    光照影响 易受影响 不受影响 不受影响
    电磁干扰影响 影响小 易受影响 不受影响
    采样频率 较高,满足土木工程测量要求 高,与测点数有关 高
    算法难度与技术成熟度 算法难度较大,技术相对成熟 算法难度大,技术仍在发展 算法难度大,技术仍在发展
    现场操作难度 简单 需要一定的技能,较难 需要一定的技能,较难
    运维难度 最为方便 一般 难
    长期监测适合度 环境条件稳定情形下适合 适合 一般
    应用成本 最低 较高 非常高
    国内外代表性产品 1.型号:IS103-DMS
    厂商:英国Imetrum公司
    工作距离:可超1 000 m
    精度:0.01 mm
    2.型号:HPQN-X免靶标多点桥梁挠度仪
    厂商:北京浩普中兴科技有限公司
    工作距离:0.1~1 000.0 m
    精度:±0.01 mm(检测距离10 m);
    ±0.1 mm(检测距离100 m);
    ±1 mm(检测距离1 000 m)
    1.型号:IBIS-S
    厂商:意大利IDS公司
    工作距离:最大2 000 m
    距离分辨率:0.5 m
    精度:0.01 mm
    2.型号:GH-DMR-1D
    厂商:湖南吉赫信息科技有限公司
    工作距离:大于500 m
    距离分辨率:0.5 m
    精度:优于0.1 mm
    1.型号:RSV-150
    厂商:德国Polytec公司
    类型:远距离激光测振仪
    工作距离:大于300 m
    位移分辨率:0.3 nm
    2. 型号:LV-RFS01
    厂商:中国舜宇光学科技有限公司
    类型:远距离单点激光测振仪
    工作距离:5~300 m
    位移分辨率:优于1 pm
    实际工程应用效果 可实现无需靶标的位移测量,但在表面缺乏明显纹理或特征的结构上,实现位移测量较为困难,通常需要在测量点设置靶标;此技术易受环境因素影响,较难实现长期稳定的位移监测和测量;一般应用于环境稳定和表面特征明显的近距离测量,成本最低。 一般情况下需要设置反射靶标才能实现较为精确的径向位移测量,设备价格工程上可接受;在远距离、恶劣环境以及光照条件不佳的情况下,该技术的应用效果较为突出,可实现长期稳定的位移监测和测量。 具有非接触、较远距离、高精度、高空间及速度分辨率的突出优点,但设备价格非常昂贵;对环境变化较为敏感,影响精度;该技术可获得近距结构的模态参数,对于大跨结构,实现低成本模态振型测试仍有一定困难。
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