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

재해 대응을 위한 CRP기반 시설물 모니터링 기법의 계측조건 영향 분석

  • 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.)
  • 이동환 (성균관대학교 미래도시융합공학과) ;
  • 임정현 (성균관대학교 미래도시융합공학과) ;
  • 박지환 (성균관대학교 미래도시융합공학과) ;
  • 유병준 (성균관대학교 미래도시융합공학과) ;
  • 박승희 (성균관대학교 건설환경공학부)
  • Received : 2017.11.14
  • Accepted : 2017.11.29
  • Published : 2017.12.29

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.

Acknowledgement

Supported by : 행정안전부

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