Analysis of Soil-Structure Interaction of a Long-Span Bridge Considering Incident Angle of Input Ground Motion

입사각을 고려한 장대교량의 지반-구조물 상호작용 해석

  • Park, Jang-Ho (Division of Environmental, Civil and Transportation Engineering, Ajou University) ;
  • Shin, Yung-Seok (Division of Environmental, Civil and Transportation Engineering, Ajou University) ;
  • Choi, Seung-Hwan (Division of Environmental, Civil and Transportation Engineering, Ajou University)
  • 박장호 (아주대학교 공과대학 환경건설교통공학부) ;
  • 신영석 (아주대학교 공과대학 환경건설교통공학부) ;
  • 최승환 (아주대학교 공과대학 환경건설교통공학부)
  • Published : 2008.04.30

Abstract

In a long-span bridge which is constructed on soft soil, it is requested to make a plan considering soil-structure interaction, and soil-structure interaction is partially under consideration at the actual bridge plan. Many researches on dynamic behavior of a bridge affected by soil-structure interacting have been accomplished, but it is difficult to estimate dynamic behavior of a bridge on soft soil accurately because of many uncertainties. This paper presents the results about dynamic response of a long-span suspension bridge in the site composed of soft soil considering incident angle of input ground motion. The effect of soft soil was evaluated by the use o computer program SASSI and a long-span suspension bridge was modeled by finite element program MIDAS. The effect of incident angle of input ground motion was investigated on the dynamic response of a long-span bridge.

Keywords

a long-span bridge;soil-structure interaction;incident angle;SASSI

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