Experimental and numerical investigations of the dynamic responses of an asymmetrical arch railway bridge

The dynamic responses of an asymmetrical arch railway bridge subjected to moving trains are experimentally and numerically investigated in this study. The strains, displacements and accelerations at critical sections of the bridge were measured at different speeds of trains. A three-dimensional finite element model of the bridge–vehicle coupling system was established to understand the measured dynamic responses and was validated against the experimental results. The numerical model was used to analyze the influence of asymmetry on the dynamic responses of the bridge and the safety and ride comfort of trains. The results indicate that the dynamic responses of the bridge increase with the train speed. Braking of the train has the largest impact on the vertical dynamic displacement of the bridge. The maximum dynamic strain is in the arch rib. The longer half arch demonstrated much larger counterforce and dynamic responses than those of the shorter half arch, while the symmetrical structures tend to exhibit good symmetry. The asymmetrical arrangement of the bridge reduces the structural stiffness.

• Record URL:
  • https://doi.org/10.1177/0954409718766929
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09544097
• Supplemental Notes:
  • © IMechE 2018.
• Authors:
  • Gou, Hongye
  • He, Yannian
  • Zhou, Wen
  • Bao, Yi
  • Chen, Genda
• Publication Date: 2018-10

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 2309-2323
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
  • Volume: 232
  • Issue Number: 9
  • Publisher: Sage Publications Limited
  • ISSN: 0954-4097
  • EISSN: 2041-3017
  • Serial URL: http://pif.sagepub.com/content/current

Subject/Index Terms

• TRT Terms: Arch bridges; Asymmetry; Finite element method; Mathematical models; Passenger comfort; Railroad bridges; Railroad trains; Strain (Mechanics); Vibration
• Uncontrolled Terms: Bridge-vehicle interaction; Dynamic strain response
• Subject Areas: Bridges and other structures; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 01706835
• Record Type: Publication
• Files: TRIS
• Created Date: May 30 2019 5:20PM