Crack Detection by Static Measurement in Steel Beams


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Effects of crack on static behavior in steel box girder were investigated to identify the possibility of crack detection and location using conventionally measured static data including deflection and inclination. Finite element analysis with finely meshed 3-D models and experiments were performed for steel box girder with crack. To eliminate the variation according to load magnitude, compliance technique was applied to analysis of the result. Through this study, the quantitative relationship between crack size and structural responses of deflection and inclination were obtained as a form of relation-curve. This relation-curve can be utilized to evaluate crack size in the steel box girder bridge. The results also demonstrated that the location of crack can be estimated by static measurement.



Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi




P. Park et al., "Crack Detection by Static Measurement in Steel Beams", Key Engineering Materials, Vols. 321-323, pp. 394-399, 2006

Online since:

October 2006




[1] S. Hanagud and H. Luo: Damage detection and health monitoring based on structural dynamics, Proceedings of the International Workshop on Structural Health Monitoring, Stanford University, Stanford, CA, USA, September 18-20 (1997), pp.715-726.


[2] J. T. Kim, Y. S. Ryu, H. M. Cho, and N. Stubbs: Damage identification in beam-type structures: frequency-based method vs mode-shape-based method, Engineering Structures, Vol. 25 (2003), pp.57-67.


[3] S. H. Kim et al.: The State-of-the-Art in Bridge Monitoring Systems and Related Techniques, (Korea Research Institute of Standards and Science, Rep. of Korea, 1998).

[4] C. H. Jenkins, L. Kjerengtroen, and H. Oestensen: Sensitivity of parameter changes in structural damage detection, Shock and Vibration, Vol. 4, No. 1 (1997), pp.27-37.


[5] L. H. Yam, Y. Y. Li, and W. O. Wong: Sensitivity studies of parameters for damage detection of plate-like structures using static and dynamic approaches, Engineering Structures, Vol. 24 (2002), pp.1465-1475.


[6] P. Park, Y. H. Huh, and D. J. Kim: Damage evaluation for steel bridge member using compliance technique, Key Engineering Materials, Vols. 270-273 (2004), pp.1610-1615.


[7] W. F. Deans and C. E. Richards: A simple and sensitive method of monitoring crack and load in compact fracture mechanics specimen using strain gages, Journal of Testing and Evaluation, Vol. 7, No. 3 (1979), pp.147-154.


[8] Y. H. Huh and J. H. Song: Back-face strain compliance calibration for the four-point bend specimen", KSME International Journal, Vol. 14, No. 3 (2000), pp.314-319.