Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Lightweight Design of a Modular Bridge for Railway Infrastructure Systems

철도 인프라 적용 교량형 조립식 모듈의 경량화 설계

  • Im, Jae Moon (Graduate school of Department of Mechanical Engineering, Hanbat National University) ;
  • Shin, Kwang Bok (Department of Mechanical Engineering, Hanbat National University) ;
  • Park, Jae Hyun (Korea Railroad Research Institute)
  • Received : 2016.08.08
  • Accepted : 2016.11.01
  • Published : 2016.12.15
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Abstract

This paper describes a method to design a lightweight modular bridge for a railway infrastructure system. A lightweight design was achieved using the material selection method. Aluminum extrusions and honeycomb sandwich composites were selected as the best materials to reduce the weight of the upper structure of a conventional modular bridge made of carbon-steel material. The structural integrity of the lightweight modular bridge was evaluated under vertical and wind loads. The twisting and bending natural frequencies were also evaluated to investigate its dynamic characteristics. The results showed that the structural integrity and natural frequencies of the lightweight modular bridge, made of aluminum extrusion and sandwich composites, satisfied the design requirements. Moreover, it was found that the weight of the conventional modular bridge made of carbon steel could be reduced by a maximum of 47% using lightweight materials.

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References

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