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KMID : 0366519970170010135
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Annual Bulletin Seoul Health
1997 Volume.17 No. 1 p.135 ~ p.145
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Damage Detection by the Structural Dynamic Characteristics
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Lee MYeong-Gu
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Abstract
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Damage estimation of bridge structures has recently received considerable attention in the light of maintenance and retrofitting of existing structures under service loads and after natural disasters. A method for the damage assessment of bridge structures using a damage index technique is presented. The damage index is formulated for the changes of modal properties due to the stiffness changes. To verify the method which is presented, numerical analysis and dynamic test are conducted on simple beams. Each simple beam is subjected to different damage scenarios, i. e., locations and degree of damage. Based on the results of this study, it is found that the proposed method is capable of detecting inflicted damages using the eigenvalue of only first mode.
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KEYWORD
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Damage Index, Location of damage, Degree of damage
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