Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Damage Estimation of Simple Beams using Damage Index : I. Theory and Numerical Analysis

손상지수를 이용한 단순보의 손상추정 I. 이론 및 수치 해석

  • 김학수 (호남대학교 토목공학과) ;
  • 장동일 (한양대학교 토목공학과)
  • Published : 1996.12.30
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Abstract

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 change of the stiffness. In order to verify the method which is presented, numerical analysis is conducted on simple beam models. Each FE model is subjected to different damage scenarios, i.e., locations and degrees of damage. Results of numerical analysis indicate that the proposed method is capable of detecting inflicted damages using the eigenvalue of only first mode.

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References

  1. Journal of Structural Engineering, ASCE v.112 no.7 Vibration of PC Bridge Failure Process Masafumi Kato;Shizuo Shimada
  2. Journal of the Structural Division, ASCE v.108 no.ST10 Dynamic Tests and System Identification of Bridges Douglas, Bruce M.;Reid, Wayne H.
  3. Journal of Structural Engineering, ASCE v.116 no.7 Identification of Modal Properties of Bridges Salane, H.J.;Baldwin, J.W. Jr.
  4. Journal of Structural Engineering, ASCE v.121 no.2 Bridge Assessment Using Forced-Vibration Testing Salawu, Olusegun S.;Williams, Clive
  5. International Journal of Offshore and Polar Engineering v.5 no.1 Damage Detection in Offshore Jacket Structures from Limited Modal Information Kim, J.T.;Stubbs, N.
  6. Journal of Mechanical Engineering Science v.20 A Vibration Techniques for Non-destructively Assessing the Integrity of Structures Adams, R.D.;Cawley, P.;Pye, C.J.;Stone, B.J.
  7. Journal of Strain Analysis v.14 no.2 The Location of Defects in Structures from Measurements of Natural Frequencies Cawley, P.;Adams, R.D.
  8. NATO Advanced Research Workshop on Bridges Evaluation, Repair and Rehabilitation Modal Technology for Damage Detection of Bridges Biswas, M.;Pandey, A.K.;Samman, M.M.