KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Displacement Evaluation of Cable Supported Bridges Using Inclinometers

경사계를 이용한 케이블교량의 변위 산정

  • 공민준 ((주)스펙엔지니어링와이엔피) ;
  • 윤정현 ((주)스펙엔지니어링와이엔피) ;
  • 강성인 (한국도로공사 도로교통연구원) ;
  • 길흥배 (한국도로공사 도로교통연구원)
  • Received : 2023.02.08
  • Accepted : 2023.04.13
  • Published : 2023.06.01
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Abstract

Displacement of structures is the most important parameter for safety and performance assessment and is measured to use for diagnosis and maintenance of bridges. Usually LVDT, Laser and GNSS are used for displacement measurement but these measurement instruments have problems in terms of field condition and cost. Therefore, in this study, displacements were evaluated using rotational angle measured by inclinometers and the proposed algorithm was experimentally verified. As the result, vertical displacements of cable supported bridges with traffic and temperature load were properly evaluated through the proposed algorithm. Therefore it is considered that the proposed algorithm can be used for displacement measurement by vehicle load test and long term displacement monitoring.

구조물의 변위는 안전성 및 성능 평가에 있어서 가장 중요한 요소 중의 하나로서 교량의 안전진단 및 유지관리에 활용하기 위해 외력에 의한 변위를 측정한다. 이러한 변위는 일반적으로 LVDT, 레이저 또는 GNSS를 이용하여 측정하고 있지만 교량의 환경조건 또는 비용적 측면에서 문제점을 가지고 있다. 따라서 본 연구에서는 이러한 문제점을 해결하기 위해 경사계에 의한 회전각 계측데이터를 이용하여 변위를 산정하였으며 알고리즘 검증을 위해 모형시험 및 현장시험을 수행하였다. 그 결과 본 연구에서 제시된 알고리즘을 통해 케이블교량의 차량하중 및 온도하중에 의한 수직변위를 적절하게 산정할 수 있었다. 따라서 차량재하시험에 의한 변위 측정 또는 장기적인 변위 모니터링에 본 연구의 변위 산정 알고리즘이 활용될 수 있을 것으로 기대된다.

Keywords

Acknowledgement

국토안전관리원 교량실과 서해대교안전센터의 테스트베드 협조에 깊은 감사를 드립니다.

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