Fatigue behavior of prestressed concrete beam for straddle-type monorail tracks

Qianhui Pu, Hanyu Wang, Hongye Gou, Yi Bao, Meng Yan

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Monorail transportation systems are widely built in medium and small cities, as well as hilly cities, because of their excellent performance. A prestressed concrete track beam is a key load-carrying structural component and guideway subjected to repeated traffic load. The fatigue behavior of the prestressed concrete beam is critical for the safety of the transportation system. This paper presents the results of an experimental study on the fatigue behavior of a prestressed concrete beam in terms of stiffness degradation and strain change. The displacement and rotation of the beam of concrete and reinforcement were examined, respectively. A three-dimensional finite element model was established to help understand the development of the mechanical behavior. No crack was observed throughout the test. Both concrete and bars behaved in their linear-elastic stage throughout the test, and the bond between them performed well.

Original languageEnglish
Article number1136
JournalApplied Sciences (Switzerland)
Volume8
Issue number7
DOIs
StatePublished - 13 Jul 2018

Keywords

  • Fatigue
  • Model test
  • Prestressed concrete beam
  • Stiffness degradation
  • Straddle-type monorail transportation

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