动态位移识别程序.doc

基于Hough变换的非接触性位移测试软件研发与振动台试验的应用验证 陈苏1，2，陈国兴1，2，韩晓1，2，戚承志3，阮滨1，2 南京工业大学岩土工程研究所 南京 210009;2. 江苏省土木工程防震技术研究中心 南京 210009； 3. 北京建筑工程学院土木与交通工程学院 北京 100044）摘 要：用Matlab平台基于Hough变换圆检测原理非接触性位移大型振动台试验表明：位移具有良好的圆检测效果满足试验要求非接触性 关 键 词：Hough变换圆检测非接触性位移；Matlab平台振动台模型试验 中图分类号：TU 3 文献标识码：A -jian1,2, QI Cheng-zhi3, RUAN Bin1,2 Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China; 2.Civil EngineeringEarthquake Disaster Prevention Center of Jiangsu Province，Nanjing 210009，China,; 3.School of Civil and Transportation Engineering，Beijing University of Civil Engineering andArchitecture，Beinjing 100044,China) Abstract: Based on the principle of Hough transform circle detection, non-contact displacement test program was developed with Matlab platform. The program was verified based on the large-scale shaking table test. The result shows that the independently-developed non-contact displacement program has good performance in circle detection, and the precision meets the test requirements. The horizontal displacement of laminar shear soil container measured by non-contact displacement method was compared with what obtained by acceleration integration method. The result shows that there exists high consistency of displacement distribution patterns between the above two methods. The peak displacement and its occurrence moments of the peak displacements were basically identical. However, under 0.1g ShiFang ground motion, the displacements tested by the two methods have large difference between 0 to 15 seconds. The horizontal displacement tested by non-contact displacement test method is more stochastic than that tested by the acceleration integration method. Non-contact displacement test program can capture the displacement of several gauge points at the same time and effectively solve the problem of limited test range, and also may avoid the interference to the measured objects. Key words: Hough transform circle detection,Non-contact displacement