A Comparison Study of Model Reduction Method with Direct Impact Analysis of Truck-column Collision

모델축소법을 이용한 교각-차량 충돌변위 예측 및 직접충돌해석법과의 비교연구

  • Lee, Jaeha (Department of Civil Engineering, Korea Maritime and Ocean University) ;
  • Kim, Kyeongjin (Department of Civil and Environmental Engineering, Korea Maritime and Ocean University) ;
  • Jeong, Yoseok (Department of Civil Engineering, Chungnam National University) ;
  • Kim, Wooseok (Department of Civil Engineering, Chungnam National University)
  • 이재하 (한국해양대학교 건설공학과) ;
  • 김경진 (한국해양대학교 토목환경공학과) ;
  • 정유석 (충남대학교 토목공학과) ;
  • 김우석 (충남대학교 토목공학과)
  • Received : 2015.10.13
  • Accepted : 2015.11.03
  • Published : 2015.12.29


Current design codes such as AASHTO LRFD or Korean Highway Bridge Design Code recommend of using static force for designing bridge column against vehicle collisions. However, there was an accident that the bridge was collapsed shortly after vehicle impact on bridge pier in Nebraska(near Big Spring, 2003). It was found that the second largest cause of bridge collapse is collision after hydraulic causes. It can be thought that the possibility of truck-bridge collision are getting increasing as the size of truck increases and traffic condition are becoming improved. However, dynamic behavior under the impact loading seldom considered in bridge design procedure due to computational cost and time. In this study, in order to reduce the computational cost for dynamic impact analysis, model reduction method was developed. Obtained results of residual displacement were compared with the results of direct impact simulations.


Supported by : 한국연구재단


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