| 基于视频图像处理技术的振动台试验动态位移测量方法 |
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| 引用本文： | 田国伟,韩晓健,徐秀丽,刘伟庆.基于视频图像处理技术的振动台试验动态位移测量方法[J].世界地震工程,2011,27(3). |
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| 作者姓名： | 田国伟 韩晓健 徐秀丽 刘伟庆 |
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| 作者单位： | 南京工业大学土木工程学院,南京,210009 |
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| 摘 要： | 动态位移是振动台试验中的重要测量参数,由于受到测量条件的限制,常规的接触式动态位移测量方法往往难以实施。文中基于数字图像处理技术研究了振动台试验中动态位移的非接触式测量方法并开发了相应的程序。首先,使用数码摄像机获取结构上人工标靶的视频图像;然后,利用视频图像处理程序对采集到的图像进行处理,实现测点位置的自动识别与跟踪,从而得到测点位移的动态时程曲线。将该方法应用于某桥梁振动台试验中,较为简便的实现了板式橡胶支座变形和滑动位移参数的测量,且达到了较高的测量精度。
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| 关 键 词： | 摄影测量 振动台试验 动态位移 板式橡胶支座 支座滑动 |
Measuring method of dynamic displacement in shaking table test based on the technology of video processing |
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| TIAN Guowei,HAN Xiaojian,XU Xiuli,LIU Weiqing.Measuring method of dynamic displacement in shaking table test based on the technology of video processing[J].World Information On Earthquake Engineering,2011,27(3). |
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| Authors: | TIAN Guowei HAN Xiaojian XU Xiuli LIU Weiqing |
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| Institution: | TIAN Guowei,HAN Xiaojian,XU Xiuli,LIU Weiqing(College of Civil Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | The dynamic displacement of the structure in shaking table test is an important measurement parameter.Usually because of the limited conditions,the contact-type displacement methods are used difficultly.In this paper,a dynamic displacement measurement method based on the technology of videos processing was studied and the corresponding program was developed.First,the symbol points attached to the tested structure are captured by the digital video camera.Second,the video images are processed to recognize and... |
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| Keywords: | photogrammetry shaking table test dynamic displacement laminated rubber bearings bearing sliding |
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