Analysis of seismic response of 3-span continuous curved bridges

3경간 연속곡선교의 지진응답 특성분석

  • 김상효 (연세대학교 사회환경시스템공학부) ;
  • 이상우 ((주)승화이엔씨 기술연구소) ;
  • 조광일 (연세대학교 대학원 토목공학과) ;
  • 박병규 ((주)씨텍컨설턴트)
  • Published : 2005.03.18

Abstract

Little has been understood about the seismic behavior of curved bridges due to the different structural characteristics compared to straight bridges. In this study, a simple numerical model, widely used for seismic analysis, is modified for a more realistic estimation of the seismic behavior. The seismic response of curved bridges obtained with the modified simple numerical model was compared with the result using a more sophisticated model to verify the feasibility. Seismic analyses were performed on three-span continuous curved bridges, which is a structural system widely used in highway structures. Numerical model of the three-span continuous curved bridges were subjected to seismic loads in diverse directions. From the result of the analysis. it was found that the direction of the seismic load have significant effect of the seismic behavior of curved bridges when the central angle exceeds 90 degrees.