Smart Structures and Systems

  • 제15권3호
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  • Pages.523-541
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  • 2015
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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Effects of local structural damage in a steel truss bridge on internal dynamic coupling and modal damping

  • 투고 : 2014.11.15
  • 심사 : 2015.02.18
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Structural health monitoring of steel truss bridge based on changes in modal properties was investigated in this study. Vibration measurements with five sensors were conducted at an existing Warren truss bridge with partial fractures in diagonal members before and after an emergency repair work. Modal properties identified by the Eigensystem Realization Algorithm showed evidences of increases in modal damping due to the damage in diagonal member. In order to understand the dynamic behavior of the bridge and possible mechanism of those increases in modal damping, theoretical modal analysis was conducted with three dimensional frame models. It was found that vibrations of the main truss could be coupled internally with local vibrations of diagonal members and the degree of coupling could change with structural changes in diagonal members. Additional vibration measurements with fifteen sensors were then conducted so as to understand the consistency of those theoretical findings with the actual dynamic behavior. Modal properties experimentally identified showed that the damping change caused by the damage in diagonal member described above could have occurred in a diagonal-coupled mode. The results in this study imply that damages in diagonal members could be detected from changes in modal damping of diagonal-coupled modes.

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참고문헌

  1. Balageas, D., Fritzen, C.P. and Guemes, A. (2006), Structural Health Monitoring, Wiley-ISTE
  2. Boller, C., Chang, F.K. and Fujino, Y. (2009), Encyclopedia of Structural Health Monitoring. Wiley.
  3. Doebling, S.W., Farrar, C.R., Prime, M.B. and Shevitz, D.W. (1996), Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics, A Literature Review, Los Alamos National Laboratory Report La-13070-MS.
  4. Fujino, Y. and Siringoringo, D.M. (2008), "Structural health monitoring of bridges in Japan: an overview of the current trend", Proceedings of the 4th International Conference on FRP Composites in Civil Engineering, Zurich.
  5. Juang, J.N. and Pappa, R.S. (1985), "An eigensystem realization algorithm for modal parameter identification and modal reduction", J. Guid. Control. Dynam., 8(5), 620-627. https://doi.org/10.2514/3.20031
  6. Kim, J. and Stubbs, N. (2003), "Nondestructive crack detection algorithm for full-scale bridges", J. Struct. Eng.-ASCE, 129(10), 1358-1366. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:10(1358)
  7. Ko, J.M. and Ni Y.Q. (2005), "Technology developments in structural health monitoring of large-scale bridges", Eng. Struct., 27, 1715-1725. https://doi.org/10.1016/j.engstruct.2005.02.021
  8. Maeck J. and de Roeck, G. (2003), "Damage assessment using vibration analysis on the Z24-bridge", Mech. Syst. Signal. Pr., 17(1), 133-142. https://doi.org/10.1006/mssp.2002.1550
  9. National Guideline (2014), Guideline for periodic inspection of bridges, Ministry of Land, Infrastructure, Transport and Tourism, Japan. (in Japanese)
  10. Shama, A.A., Mander, J.B., Chen, S.S. and Aref, A.J. (2001), "Ambient vibration and seismic evaluation of cantilever truss bridge", Eng. Struct., 23, 1281-1292. https://doi.org/10.1016/S0141-0296(01)00027-X
  11. Spyrakos, C.C., Raftoyiannis, I.G. and Ermopoulos, J.C. (2004), "Condition assessment and retrofit of a historic steel-truss railway bridge", J. Constr. Steel Res., 60, 1213-1225. https://doi.org/10.1016/j.jcsr.2003.11.004
  12. Yamaguchi, H., Fujiwara, T., Yamaguchi, K., Matsumoto, Y. and Tsutsumi, K. (2004), "Coupling of cable vibration and its damping effect in long span cable-stayed bridge: the Tatara Bridge", J. Struct. Mech. Earth. Eng. -JSCE, 766(68), 309-323. (in Japanese)
  13. Yoneda, M. (1994), "Some considerations on damping characteristics of bridge structures due to Coulomb friction force at movable support", J. Struct. Mech. Earth. Eng. -JSCE, 492/I-23, 137-145. (in Japanese).
  14. Yoshioka, T., Yamaguchi, H., Itou, S. and Harada, M. (2009), "Identification vibration characteristics of the steel truss bridge and influence of diagonal member damage on damping", Kozo Kogaku Ronbunshu, A (J. Struct. Eng., A), 60A, 295-305. (in Japanese)

피인용 문헌

  1. Canonical correlation analysis based fault diagnosis method for structural monitoring sensor networks vol.17, pp.6, 2016, https://doi.org/10.12989/sss.2016.17.6.1031
  2. Bayesian Model Updating and Its Limitations for Detecting Local Damage of an Existing Truss Bridge vol.22, pp.7, 2017, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001044
  3. Vibration-Based Health Monitoring of an Existing Truss Bridge Using Energy-Based Damping Evaluation vol.23, pp.1, 2018, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001159
  4. Identification of structural dynamic characteristics based on machine vision technology 2018, https://doi.org/10.1016/j.measurement.2017.09.043