Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Seismic Response Analysis of Bridges Considering Spatial Variation of Input Ground Motion

입력지반운동의 공간적 변화를 고려한 교량의 지진응답해석

  • 최광규 (동아대학교 토목공학과) ;
  • 강승우 (동아대학교 토목공학과) ;
  • 국승규 (부경대학교 건설공학부)
  • Published : 2010.02.28
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Abstract

This paper presents a seismic response analysis of bridge structures considering the spatial variation of input ground motion. In earthquake analyses of structures, it is usually assumed that the input ground motion is the same at every support. However, this assumption is not justified for long structures like bridges, because observations have shown that the earthquake ground motion can vary considerably within relatively small distances. When the soil under the foundation is relatively soft and deep, an analysis of the foundation-soil interaction must always be performed. To consider the foundation-soil interaction, a soil response analysis is performed first, and after determining the material characteristics of the foundation element obtained by this foundation-soil interaction analysis, the seismic response analysis of a bridge superstructure with equivalent springs and dampers is performed. Finally, the influences of the spatial variation in the input motion, which are affected by different soil characteristics, are considered.

Keywords

References

  1. 박장호 (2006). "복잡한 지층 형상을 고려한 지반-구조물 상호작용해석", 한국안전학회지, 제21권, 제3호, pp 87-93.
  2. 윤정방, 장수혁, 서춘교, 이원철 (2001). 지반-구조물 상호작용을 고려한 교량의 지진응답해석, University of California.
  3. 이종세, 최준성, 최준혁 (2001). "다중 지진파 입력과지반의 비선형성을 고려한 장대교량의 지진응답해석", 대한토목학회, 2001학술발표 논문집 CD.
  4. 한국지진공학회 (1997). 내진설계기준연구(II), 건설교통부.
  5. 한국지반공학회 (1997). 진동 및 내진설계, 구미서관.
  6. Harrichandran, R.S. and Wang, W. (1990) "Response of Indeterminate Two-span Beam to Spatially Varying Seismic Excitation", Earthquake Engineering and Structural Dynamics, Vol 19, pp 173-187. https://doi.org/10.1002/eqe.4290190203
  7. SASSI User's Manual (1988). The Regents of the University of California.
  8. Schnabel, P.B., Lysmer, J. and Seed, H.B. (1992). SHAKE91 User's Manual, University of California.
  9. Spyrakos, C.C. (1992). "Seismic Behavior of Bridge Piers Including Soil-structure Interaction", Computers & Structures, Vol 43, No 2, pp 373-384. https://doi.org/10.1016/0045-7949(92)90155-S
  10. Somini, D.R. (1987). "Seismic Behavior of Girder Bridges for Horizontally Propagating Waves", Earthquake Engineering and Structural Dynamics, Vol 15, pp 777-793. https://doi.org/10.1002/eqe.4290150609
  11. Vahdani, S. (1984). Impedence Matrices for Soil-Structure interaction Analysis by the Flexible Volume Method, Ph. D. Dissertation, University of California, Berkely.