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http://dx.doi.org/10.7734/COSEIK.2017.30.6.541

Study on Measurement Condition Effects of CRP-based Structure Monitoring Techniques for Disaster Response  

Lee, Donghwan (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Leem, Junghyun (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Park, Jihwan (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Yu, Byoungjoon (Department of Convergence Engineering for Future City, Sungkyunkwan Univ.)
Park, Seunghee (School of Civil, Architectural Engineering and Landscape Architecture, Sungkyunkwan Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.30, no.6, 2017 , pp. 541-547 More about this Journal
Abstract
Climate change has become the main cause of the exacerbation in natural disasters. Social Overhead Capital(SOC) structure needs to be checked for displacement and crack periodically to prevent damage and the collapse caused by natural disaster and ensure the safety. For efficient structure maintenance, the optical image technology is applied to the Structure Health Monitoring(SHM). However, optical image is sensitive to environmental factors. So it is necessary to verify its validity. In this paper, the accuracy of estimating the vertical displacement was verified with respect to environmental condition such as natural light, measurement distance, and the number of image sheets. The result of experiments showed that the effect of natural light on accuracy of estimating vertical displacement was the greatest of all. The measurement angle which was affected by the change in measurement distance was also important to check the vertical displacement. These findings will be taken into account by applying appropriate environmental condition to minimize errors when the bridge was measured by camera. It will also enable the application of optical images to the SHM.
Keywords
close-range photogrammetry(CRP); structural health monitoring; environmental condition;
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Times Cited By KSCI : 2  (Citation Analysis)
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