TTCI STUDIES FATIGUE STRENGTH OF TIMBER BRIDGE STRINGERS

Despite a current trend of replacing them in steel or concrete, timber bridges still form about one-third of the Class 1 railroads' bridge inventory. These bridges are, on the average, more than 40 years old, and as their replacement is gradual, various measures are being employed to extend their useful life. Although caps and/or piles can often determine load capacity of a timber railroad bridge, stringers are the main elements that bear bending loads. As part of Association of American Railroads' Bridge Life Extension Program, the Transportation Technology Center, Inc. (TTCI) is conducting a series of fatigue tests on timber bridge stringers. The tests on Southern pine stringers are complete and are reported in this article.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1763403
• Corporate Authors:

  Simmons-Boardman Publishing Corporation

  345 Hudson Street
  New York, NY  United States  10014
• Authors:
  • Uppal, A S
  • Fry, G T
• Publication Date: 2000-6

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 17-20
• Serial:
  • Railway Track and Structures
  • Volume: 96
  • Issue Number: 6
  • Publisher: Simmons-Boardman Publishing Corporation
  • ISSN: 0033-9016

Subject/Index Terms

• TRT Terms: Bend tests; Fatigue strength; Load limits; Railroad bridges; Shear stress; Stringers; Timber construction
• Subject Areas: Bridges and other structures; Construction; Railroads;

Filing Info

• Accession Number: 00794353
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 25 2000 12:00AM