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Damage Assessment Technique for Bridge Structures By Moving Load Tests and Optical Displacement Measurements

광변위 계측과 주행하중시험기법에 의한 교량구조의 손상도 추정기법

  • Received : 2014.08.25
  • Accepted : 2015.01.08
  • Published : 2015.01.31

Abstract

In this paper, a damage assessment technique using a moving load test and optical sensors was studied to overcome the deficiency of measurement information in bridge maintenance. Continuous displacements by applying the reciprocal theorem to the test can make the assessment simpler and more practical. Numerical and experimental studies were performed to show the efficiency and accuracy of the proposed technique as well as the possibility of a more realistic assessment for large infrastructure. The results showed that the assessed damage levels are quite accurate, and similar to the exact values in actual damage locations, even in the experiments. The proposed technique is useful and practical for both detecting damage locations and damage quantities.

본 논문에서는 교량 구조의 유지관리에서 계측정보 부족 문제를 극복하기 위하여 주행하중 시험법과 광변위 계측을 이용하는 손상도 추정기법에 대한 연구를 수행하였다. 이 방법을 통한 연속적 계측 변위는 손상 추정을 보다 간단하며 실제적이도록 할 수 있다. 제안된 기법에 의한 대형 사회기간시설물에 대한 보다 현실적인 손상 추정 방법으로의 가능성과 이 방법의 효율성과 정확도를 보이기 위하여 수치모의실험과 실험적 연구가 수행되었다. 예제해석 결과는 실험적 방법에서도 구해진 손상도들이 충분한 정확도를 가지고 있고 특히 실제 손상위치에서는 정확한 값과 거의 같음을 나타내고 있다. 이는 제안된 방법이 손상위치 추정이나 손상정도 추정에 모두 유용하고 실제 현장에서 구현 가능한 실용성이 충분하다는 의미로 해석된다.

Keywords

References

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