On live load impact factors for railroad bridges

Dynamic loads crossing a bridge cause a structural response greater than if the same loads were static, a fact that has been known to structural engineers for over 125 years. This review paper presents a history of the evolution of railroad bridge impact formulas. Most non-North American countries operate passenger trains at much higher speeds than in North America. In the US, hundreds of very old open deck bridges will eventually likely be required to carry faster trains. This raises the question of what effects higher speeds will have on these bridges. What factors need to be considered in the upgrading of existing open deck bridges to accommodate newer and higher speed train equipment? A comparison of how dynamic impact factors are computed in countries around the world has been presented. Also examined are the differences and reasons between the impact requirements of North American railroads and European and Asian railroads.

• Record URL:
  • https://doi.org/10.1080/23248378.2019.1604182
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/23248378
• Supplemental Notes:
  • © 2019 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Jacobs, David W
  • Malla, Ramesh B
  • 0000-0002-8035-8402
• Publication Date: 2019-10

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 262-278
• Serial:
  • International Journal of Rail Transportation
  • Volume: 7
  • Issue Number: 4
  • Publisher: Taylor & Francis
  • ISSN: 2324-8378
  • EISSN: 2324-8386
  • Serial URL: http://www.tandfonline.com/loi/tjrt20

Subject/Index Terms

• TRT Terms: Dynamic loads; High speed rail; International; Literature reviews; Live loads; Railroad bridges; Regulations; Rolling contact; Train track dynamics
• Geographic Terms: Asia; Europe; North America
• Subject Areas: Bridges and other structures; Law; Planning and Forecasting; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 01720594
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 28 2019 10:30AM