NATURAL FREQUENCY OF RAILWAY GIRDER BRIDGES UNDER VEHICLE LOADS

To investigate the natural frequency of a railway girder bridge under vehicle loads, two methods are presented. First, the natural frequency of a railway girder bridge under vehicle loads is obtained by solution of the eigenvalue of the vehicle-bridge interaction equation at each step of the numerical integration. Second, based on the vehicle-bridge interaction equation, an approximate formula is developed. The results show that the natural frequency of a railway girder bridge under vehicle loads varies periodically as the vehicles pass over the bridge. The results obtained with the two methods are then compared, showing that a good agreement is achieved. From parametric studies, the effects of the unsprung mass, the sprung mass, and the stiffness of the vehicle suspension are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Li, Jian
  • Su, M
  • Fan, L
• Publication Date: 2003-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 199-203
• Serial:
  • Journal of Bridge Engineering
  • Volume: 8
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Bridge engineering; Dynamic loads; Girder bridges; Natural frequency; Numerical integration; Parametric analysis; Railroad bridges; Stiffness; Suspension systems; Traffic loads
• Subject Areas: Bridges and other structures; Data and Information Technology; Design; Freight Transportation; Highways; Materials; Railroads; Vehicles and Equipment; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00960740
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 3 2003 12:00AM