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| 应用数字散斑相关法测量结构振动位移和频率 | |
| 引用本文： | 段元锋,姜平安,叶贵如,周青松. 应用数字散斑相关法测量结构振动位移和频率[J]. 公路交通科技, 2011, 28(6): 75-82 |
| 作者姓名： | 段元锋 姜平安 叶贵如 周青松 |
| 作者单位： | 段元锋,姜平安,叶贵如,DUAN Yuanfeng,JIANG Pingan,YE Guiru(浙江大学,建筑工程学院,浙江,杭州,310058);周青松,ZHOU Qingsong(杭州市城乡建设设计院,浙江,杭州,318000) |
| 基金项目： | 国家自然科学基金项目，浙江省自然科学基金项目，霍英东教育基金会第十二届高等院校青年教师基金项目，中央高校基本业务费专项资金项目 |
| 摘 要： | 将数字散斑相关法应用于测量结构振动的位移和频率,对振动结构标记人为散斑或者利用结构本身较明显的天然散斑作为目标点,利用摄像机连续采集一系列数字图像,结合数字散斑相关法,对目标点散斑进行识别,计算其在图像中位置的变化以获得目标点位移,进而通过FFT变化得到频率.在振动台水平正弦激励某模型结构的实验中,通过与位移计测量结果... |
| 关 键 词： | 桥梁工程 数字散斑相关法 非接触测量 位移 频率 |
Measurement of Structural Vibration Displacement and Frequency by Using Digital Speckle Correlation Method |
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| DUAN Yuanfeng,JIANG Pingan,YE Guiru,ZHOU Qingsong. Measurement of Structural Vibration Displacement and Frequency by Using Digital Speckle Correlation Method[J]. Journal of Highway and Transportation Research and Development, 2011, 28(6): 75-82 | |
| Authors: | DUAN Yuanfeng JIANG Pingan YE Guiru ZHOU Qingsong |
| Affiliation: | DUAN Yuanfeng1,JIANG Ping'an1,YE Guiru1,ZHOU Qingsong2(1.College of Civil Engineering and Architecture,Zhejiang University,Hangzhou Zhejiang 310058,China,2.Hangzhou Urban and Rural Construction Design Institute,Hangzhou Zhejiang 318000,China) |
| Abstract: | The Digital Speckle Correlation Method(DSCM) was applied to the measurement of structural vibration displacement and frequency.The procedures for this measurement technique include:(1) to mark one or more artificial speckles or to select some existing obvious natural speckles on the vibrating structure as the movement target;(2) to get a series of continuous digital images from the video for capturing the structural vibration;(3) to obtain the displacement of movement target by locating the selected speckle... |
| Keywords: | bridge engineering digital speckle correlation method non-contact measurement displacement frequency |
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