Dynamic behavior of hybrid framed arch railway bridge under moving trains

Hongye Gou, Hao Long, Yi Bao, Genda Chen, Qianhui Pu

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

In this study, the dynamic behavior of a concrete-filled steel tube (CFST) hybrid framed arch railway bridge under moving trains are investigated through an in-site dynamic test. The bridge was tested under train loadings in different scenarios and at different speeds of the trains. The free vibration characteristics, strain, displacement, and acceleration of the bridge structure were measured to evaluate the dynamic responses of the train-bridge coupling system. A three-dimensional finite element model, which took into account the train-bridge coupling and track irregularities, was established to analyze the behaviors of the train-bridge system. The model was validated against the in situ test results. The impact effect on the girder was greater than that of the arch frame. The acceleration responses of the trains on the bridge increased with the train’s speed. The riding comfort of the trains was evaluated based on the measured dynamic responses of trains.

Original languageEnglish
Pages (from-to)1015-1024
Number of pages10
JournalStructure and Infrastructure Engineering
Volume15
Issue number8
DOIs
StatePublished - 3 Aug 2019

Keywords

  • Hybrid framed arch bridge
  • dynamic response
  • finite element model
  • impact effect
  • in-site dynamic test
  • riding comfort

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