Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

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
Download PDF
⟨ Previous Next ⟩

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

  1. Kyung-Hoon Park, Sang-Yoon Lee, Yoon-Koog Hwang, Jung-Sik Kong, Jong-Kwon Lim, "Development of the Performance-Based Bridge Maintenance System to Generate Optimum Maintenance Strategy Considering Life-Cycle Cost", Journal of The Korea Institute for Structural Maintenance and Inspection, KSMI, Vol. 11, No 4, pp. 109-120, 2007
  2. Jae-In Shin, Chang-Ho Park, Sang-Sun Lee, Beyong-Ju Lee, "An Improvement for Evaluating Load Carrying Capacity by Passing Vehicles of PSC-BOX Bridge", Journal of The Korea Institute for Structural Maintenance and Inspection, KSMI, Vol. 11, No 4, pp.147-151, 2007
  3. Wenzel, H., Health Monitoring of Bridges, pp. 1-17, Wiley, 2009. DOI: http://dx.doi.org/10.1002/9780470740170
  4. Deraemaeker, A., Reynders, E., Roeck, G. De., and Kullaa, J. "Vibration-based structural health monitoring using output- only measurements under changing environment," Mechanical Systems and Signal Processing, Elsevier, Vol. 22, No. 1, pp. 34-56., 2008 DOI: http://dx.doi.org/10.1016/j.ymssp.2007.07.004
  5. Hyunsu Kim, Yuhee Kim, Jongchil Park, and Soobong Shin, "Data Analysis and Health Index for Health Monitoring of Seohae Bridge", J. of KSCE, KSCE, Vol. 33, No 02, Page pp 387-395, 2013 DOI: http://dx.doi.org/10.12652/Ksce.2013.33.2.387
  6. G. C. Yao, K. C. Chang, and G. C. Lee, "Damage Diagnosis of Steel Frames Using Vibrational Signature Analysis", J. of Engrg Mech., ASCE, 118(9), pp. 1949-1961, 1992 https://doi.org/10.1061/(ASCE)0733-9399(1992)118:9(1949)
  7. H.N. Cho, Y.N. Choi, S.C Lee,. K.M. Lee, "Structural Damage Assessment Based on Model Updating and Neural Network," J. of The Korea Institute for Structural Maintenance and Inspection, KSMI, Vol. 7, No. 4, pp. 121-128., 2003
  8. J. Kullaa, "Damage Detection the Z24 Bridge Using Control Charts," Mechanical Systems and Signal Processing, Elsevier, Vol. 17, No. 1, pp. 163-170. 2003 DOI: http://dx.doi.org/10.1006/mssp.2002.1555
  9. Jong-Jae Lee, Hoai-Nam Ho, "A vision-based damage detection of cables in cable bridges", Proc. of the Korea Institute for Structural Maintenance and Inspection 2011 Spring Conference, pp.9-13, KSMI, 2011
  10. Jin-Hak Yi, .Jin-Ha.Kim, Weon-Mu.Jeong and Jang-Won Chae, "Vision-Based Dynamic Motion Measurement of a Floating Structure Using Multiple Targets under Wave Loadings", J. of KSCE, Vol. 32, No. 1A, pp. 19-30, 2012 https://doi.org/10.12652/KSCE.2012.32.1A.019
  11. D. J. Ewins, Modal Testing: Theory, Practice and Application, 2nd Edition, pp. 86-188, Research Press Ltd, 2000