中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2017, Vol. 36 ›› Issue (1): 9-13.DOI: 10.3969/j.issn.1674-0696.2017.01.02

• 桥梁与隧道工程 • 上一篇    下一篇

基于差值放大法的锚固面位移监测系统

蓝章礼1,田源1,周建庭2,姚进强1   

  1. (1.重庆交通大学信息科学与工程学院,重庆400074;2.重庆交通大学土木工程学院,重庆400074)
  • 收稿日期:2015-12-06 修回日期:2016-01-21 出版日期:2017-01-20 发布日期:2017-02-08
  • 作者简介:第一作者:蓝章礼(1973—),男,重庆人,教授,博士,主要从事桥梁健康监测、数字图像处理等方面的研究。E-mail:Lanzhangli@126.com。
  • 基金资助:
    重庆市国土资源和房屋管理局科技计划资助项目(CQGT-KJ-2014029)

Anchoring Surface Displacement Monitoring System Based on Differential Amplification Method

LAN Zhangli1,TIAN Yuan1,ZHOU Jianting2,YAO Jinqiang1   

  1. (1. School of Information Science&Engineering, Chongqing Jiaotong University, Chongqing 400074,P.R.China;2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074,P.R.China)
  • Received:2015-12-06 Revised:2016-01-21 Online:2017-01-20 Published:2017-02-08

摘要: 通过对悬索桥锚固面特征的研究,设计了一种差值放大装置,结合图像处理技术,提出一种基于活塞装置的位移差值放大法来监测锚固面位移的测量系统。介绍了系统的组成和测量原理,通过图像分割、圆拟合、位移转换等获得锚固面蠕变数据。对测量系统镜头畸变误差和非垂直安装误差进行分析并阐明解决措施。实验结果表明:当蠕变范围为-1.2cm~+1.2cm时,其测量误差可以控制在3.5%以内。

关键词: 桥梁工程, 悬索桥, 锚固面, 位移, 测量系统, 差值放大

Abstract: A measurement system based on the piston device displacement differential amplification method is put forward for monitoring the displacement of anchorage surface through research on the characteristics of anchorage plane of the suspension bridge, design of a differential amplifier device in combination with image processing technology. The composition and measurement principle of the system were introduced, and the creep data of the anchor surface was obtained by the image segmentation and the circle fitting method and the displacement transformation. About the measuring system, lens distortion error and non vertical installation errors were analyzed and the solutions were expounded. The experimental results show that when the creep range of -1.2 cm~+1.2 cm, the measurement error can be controlled within 3.5%.

Key words: bridge engineering, suspension bridge, anchoring surface, displacement, measuring system, differential amplification

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