基于数码摄像技术的高耸结构动态特性监测

陈伟欢;吕中荣;陈树辉;倪一清;廖渭扬

振动与冲击 ›› 2011, Vol. 30 ›› Issue (7) : 5-9.

PDF(1533 KB)
PDF(1533 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (7) : 5-9.
论文

基于数码摄像技术的高耸结构动态特性监测

  • 陈伟欢1; 吕中荣1; 陈树辉; 倪一清2; 廖渭扬2
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MONITORING DYNAMIC CHARACTERISTICS OF A HIGHRISE STRUCTURE BASED ON DIGITAL CAMERA TECHNOLOGY

  • CHEH Wei-huan1; LU Zhong-rong1; CHEN Shu-hui1; Ni Yi-qing2; LIAO Wei-yang2
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文章历史 +

摘要

在结构健康监测领域,基于数码摄像的图像处理技术作为一种新的结构振动监测方法正受到广泛关注。以主结构建成后的广州新电视塔为研究背景,利用工业数码摄像机对其在一般风荷载作用下的动态特性进行监测试验,并与GPS和加速度计同时测量。数据分析结果表明,利用数码摄像系统获得的塔顶动位移时程曲线与GPS获得的动位移曲线吻合得较好;利用数码摄像技术能够准确的识别高耸结构的低阶振动频率,其获得的结构一阶振动频率,与GPS、加速度计识别结果以及有限元分析结果吻合得很好。研究结果表明,在高耸结构的健康监测中,应用数码摄像技术进行结构动态特性监测是一种有效的新方法。

Abstract

In the field of structural health monitoring, the image processing technology based on digital camera is arousing widespread concern as a new technique of structure vibration monitoring. Taking the GZ New TV Tower as the research background, the author makes use of the industrial digital camera as well as the GPS and accelerometer to monitor the dynamic characteristics of the tower. The analysis of the data shows that the dynamic displacement time history obtained from the digital camera system matches well with the one obtained from GPS. The former can exactly obtained the lower natural frequency; meanwhile, the first natural frequency obtained from the digital camera system matches well with the results of the GPS, the accelerometer and the Finite Element Analysis. The research result of this paper shows that the application of digital camera technology in dynamic characteristics monitoring of highrise structure is an effective new technique in structural health monitoring.

关键词

数码摄像技术 / 高耸结构 / 结构健康监测 / 动态特性

Key words

digital camera technology / highrise structure / structural health monitoring / dynamic characteristics

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陈伟欢;吕中荣;陈树辉;倪一清;廖渭扬. 基于数码摄像技术的高耸结构动态特性监测[J]. 振动与冲击, 2011, 30(7): 5-9
CHEH Wei-huan; LU Zhong-rong; CHEN Shu-hui; Ni Yi-qing; LIAO Wei-yang. MONITORING DYNAMIC CHARACTERISTICS OF A HIGHRISE STRUCTURE BASED ON DIGITAL CAMERA TECHNOLOGY[J]. Journal of Vibration and Shock, 2011, 30(7): 5-9

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