Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Three Dimensional Model for Dynamic Moving Load Analysis of a PSC-I Girder Railway Bridge

PSC-I 거더 철도교량의 3차원 동적 이동하중 해석 모델

  • Cho, Jeong-Rae (Structural Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kim, Dong-Seok (Technology Research Institute, Interconstech Co., Ltd.) ;
  • Kim, Young Jin (Structural Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kwark, Jong-Won (Structural Engineering Research Division, Korea Institute of Construction Technology) ;
  • Jang, Seung Yup (High-Speed Railroad System Research Center, Korea Railroad Research Institute)
  • Received : 2012.11.05
  • Accepted : 2013.06.24
  • Published : 2013.08.31
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Abstract

In this paper we evaluated dynamic stability, considering the effects of modeling and analysis methods on moving load analysis, for which a sophisticated 3 dimensional model of a PSC-I type girder bridge was used. For this purpose, we suggested a reasonable modeling method and the physical properties of the concrete and ballasted track system involved. We also analyzed the response characteristics according to: 1) the type of track system; 2) whether or not the track was modeled; 3) whether or not the distance between the girder center and the bearing were considered; 4) the analysis method (i.e., direct integral and modal analysis); 5) whether or not the frequency was filtered.

본 연구에서는 PSC-I 거더 교량을 대상으로, 3차원 교량 모델로 이동하중해석에 의한 엄밀한 동적 안정성 해석을 수행할 때의 모델링 방법과 해석방법에 대한 영향 평가를 수행하였다. 이를 위해 콘크리트 및 자갈궤도 등을 채용할 때의 합리적인 모델링 방법론과 물성치를 제시하였다. 또한, 궤도 모델링 유무, 궤도 종류, 거더 중심에서 받침까지의 거리 고려 여부, 직접적분법과 모달해석법 등 이동하중해석법, 필터링 등이 응답에 미치는 영향을 분석하였다.

Keywords

References

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