DOI QR코드

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Seismic damage of long span steel tower suspension bridge considering strong aftershocks

  • Xie, X. (Department of Civil Engineering, Zhejiang University) ;
  • Lin, G. (Department of Civil Engineering, Zhejiang University) ;
  • Duan, Y.F. (Department of Civil Engineering, Zhejiang University) ;
  • Zhao, J.L. (Department of Civil Engineering, Zhejiang University) ;
  • Wang, R.Z. (Center for Research on Earthquake Engineering)
  • 투고 : 2011.01.31
  • 심사 : 2012.04.23
  • 발행 : 2012.09.25

초록

The residual capacity against collapse of a main shock-damaged bridge can be coupled with the aftershock ground motion hazard to make an objective decision on its probability of collapse in aftershocks. In this paper, a steel tower suspension bridge with a main span of 2000 m is adopted for a case-study. Seismic responses of the bridge in longitudinal and transversal directions are analyzed using dynamic elasto-plastic finite displacement theory. The analysis is conducted in two stages: main shock and aftershocks. The ability of the main shock-damaged bridge to resist aftershocks is discussed. Results show that the damage caused by accumulated plastic strain can be ignored in the long-span suspension bridge. And under longitudinal and transversal seismic excitations, the damage is prone to occur at higher positions of the tower and the shaft-beam junctions. When aftershocks are not large enough to cause plastic strain in the structure, the aftershock excitation can be ignored in the seismic damage analysis of the bridge. It is also found that the assessment of seismic damage can be determined by superposition of damage under independent action of seismic excitations.

키워드

참고문헌

  1. Abaqus. (2006), ABAQUS, Version 6.5, Habbitt, Karlsson & Sorensen, Inc., Pawtucket, R.I.
  2. Amadio, C., Fragiacomo, M. and Rajgelj, S. (2003), "The effects of repeated earthquake ground motions on the non-linear response of SDOF systems", Earthq. Eng. Struct. D., 32(2), 291-308. https://doi.org/10.1002/eqe.225
  3. Fragiacomo, M., Amadio, C. and Macorini, L. (2004), "Seismic response of steel frames under repeated earthquake ground motions", Eng. Struct., 26(13), 2021-2035. https://doi.org/10.1016/j.engstruct.2004.08.005
  4. Franchin, P. and Pinto, P.E. (2009), "Allowing traffic over main shock-damaged bridges", J. Earthq. Eng., 13(5), 585-599. https://doi.org/10.1080/13632460802421326
  5. George, P.C. "CHINA - Tangshan Earthquake of July 28, 1976", http://www.drgeorgepc.com/ Earthquake1976ChinaTangshan.html.
  6. Japan Meteorological Agency: http://www.jma.go.jp/index.html.
  7. Japan Road Association. (2002), Specifications for highway bridges, Maruzen Co. Ltd., Tokyo.(in Japanese)
  8. Kim, K.W., Chen, K.C., Wang, J.H. and Chiu, J.M. (2010), "Seismogenic structures of the 1999 Mw 7.6Chi- Chi,Taiwan,earthquake and its aftershocks", Tectonophysics, 489(1-4), 119-127. https://doi.org/10.1016/j.tecto.2010.04.011
  9. Kimura, Y., Kawano, K. and Nakamura, Y. (2007), "Effects on accumulated damages for seismic performance evaluation", J. Earthq. Eng.-JSCE, 53(A), 398-405.
  10. Lee, K. and Foutch, D.A. (2004), "Performance evaluation of damaged steel frame buildings subjected to seismic loads", J. Earthq. Eng., 130(4), 588-599. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:4(588)
  11. Li, Q.W. and Ellingwood, B.R. (2007), "Performance evaluation and damage assessment of steel frame buildings under main shock-aftershock earthquake sequences", Earthq. Eng. Struct. D., 36(3), 405-427. https://doi.org/10.1002/eqe.667
  12. Luco, N., Bazzurro, P. and Cornell, C.A. (2004), "Dynamic versus static computation of the residual capacity of a main shock-damaged building to withstand an aftershock", Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver, Canada.
  13. McCabe, S.L. and Hall, W.J. (1989), "Assessment of seismic structural damage", J. Earthq. Eng., 115(9), 2166-2183. https://doi.org/10.1061/(ASCE)0733-9445(1989)115:9(2166)
  14. Murata, A., Kitaura, M. and Miyajima, M. (2004), "Prediction of damage to structures through fatigue response spectra considering number of earthquake response cycles", Proceedings of the 13th world conference on earthquake engineering, Vancouver, Canada.
  15. Park, Y.J. and Alfredo, H.S. (1985), "Mechanistic seismic damage model for reinforced concrete", J. Earthq. Eng., 111(4), 722-739. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(722)
  16. Usami, T. (2007), Guidelines for seismic and damage control design of steel bridges, GIHODO SHUPPAN Co. Ltd., (in Japanese).
  17. Zhao, B. and Taucer, F. (2010), "Performance of Infrastructure during the May 12, 2008 Wenchuan Earthquake in China", J. Earthq. Eng., 14(4), 578-600. https://doi.org/10.1080/13632460903274053

피인용 문헌

  1. Contribution of local site-effect on the seismic response of suspension bridges to spatially varying ground motions vol.10, pp.5, 2016, https://doi.org/10.12989/eas.2016.10.5.1233
  2. Investigation of elasto-plastic seismic response analysis method for complex steel bridges vol.7, pp.3, 2014, https://doi.org/10.12989/eas.2014.7.3.333
  3. Residual seismic performance of steel bridges under earthquake sequence vol.11, pp.4, 2016, https://doi.org/10.12989/eas.2016.11.4.649
  4. Energy dissipation system for earthquake protection of cable-stayed bridge towers vol.5, pp.6, 2013, https://doi.org/10.12989/eas.2013.5.6.657
  5. Effects of Aftershocks on the Potential Damage of FRP-Retrofitted Reinforced Concrete Structures vol.18, pp.11, 2012, https://doi.org/10.1007/s40999-020-00533-4
  6. Post-earthquake strength assessment of a steel bridge considering material strength degradation vol.17, pp.3, 2021, https://doi.org/10.1080/15732479.2020.1750041