Comparison of Girder Height and Construction Cost by Span in Various Types of Railway Bridge

철도교량형식의 경간에 따른 형고 및 공사비 비교연구

  • 이태규 (우송대학교 철도건설환경공학과) ;
  • 어성욱 (우송대학교 철도건설환경공학과)
  • Published : 2008.10.30


The superstructure type of the railway bridge in our country, is mainly classified into the box girder and the I-type girder. The box girder is widely used in the high speed railway bridge because of the safety due to dynamic behavior. The I-type girder is used in the conventional railway bridge, and is also divided into the general type and the composite type, and the newly modified types have been developed. According to the current railway bridge design code, the girder design by the span length in various types of railway bridge is performed in is study. The suitable girder height and the construction cost by the span length are analyzed, and the comparative analysis of the structural efficiency and the economical efficiency is carried out. From this study, the composite type girder is appeared the good result in respect of the structural efficiency. However, in the economical aspect, the general I-type girder is required less cost than the other types.


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