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Seismic Analysis of a Bridge Using Fiber Element

  • 조정래 (한국건설기술연구원 연구원) ;
  • 곽임종 (한국건설기술연구원) ;
  • 조창백 (한국건설기술연구원 연구원) ;
  • 김병석 (한국건설기술연구원 수석연구원) ;
  • 김영진 (한국건설기술연구원)
  • 발행 : 2002.03.01

초록

In the present design concept, the nonlinear behaviour of bridges is at lowed under large earthquake. The nonlinearity is, however, localized like pier, bearing, etc. Especially, pier columns are most important members for seismic performance. It is, however, difficult to solve the problem how the nonlinearity of columns should be modelled. In this study, the fiber element is used for modelling pier column. The element is a kind of structural elements like frame element, and it can model the distributed plasticity of plastic hinge. A 3 span continous bridge is taken for seismic analysis. First, the nonlinear static analysis the column at fixed support are performed so that the characteristics of column is analyzed. Second, Linear and nonlinear dynamic analysises using simplified model for longitudinal direction are carried out and the results are analyzed.

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