RELIABILITY-BASED CRITERIA FOR LOAD AND RESISTANCE FACTOR DESIGN CODE FOR WOOD BRIDGES

Recently the American Association of State Highway and Transportation Officials (AASHTO) adopted a load and resistance factor design code for highway bridges. The new code provides a rational basis for the design of steel and concrete structures. However, the calibration was not done for wood bridges. Therefore, there is a need to fill this gap. The development of statistical models for wood bridge structures is discussed. Recent test results provided a considerable amount of new data for sawed wood and glued laminated (glulam) components. Statistical methods provide a good tool for development of rational models for loads and resistance. Because of the random nature of load and resistance, reliability is a convenient measure of structural performance that also provides a rational basis for comparison of wood and other structural materials. The results of a recent project that led to development of rational design criteria for wood bridges are presented. The structural reliability of selected wooden bridges designed by the AASHTO codes are determined, and inadequacies in load distribution and material resistance in the current specifications are identified.

• Record URL:
  https://doi.org/10.3141/1696-33
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=RELIABILITY-BASED+CRITERIA+FOR+LOAD+AND+RESISTANCE+FACTOR+DESIGN+CODE+FOR+WOOD+BRIDGES&author=C.+Eamon&author=A.+Nowak&author=M.+Ritter&author=J.+MURPHY&publication_year=2000
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309071224
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1696, Fifth International Bridge Engineering Conference, April 3-5, 2000, Tampa, Florida, Volume 1. The revised name of this series is Transportation Research Record: Journal of the Transportation Research Board.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Eamon, C
  • Nowak, A S
  • Ritter, M A
  • Murphy, J
• Conference:
  • Fifth International Bridge Engineering Conference
  • Location: Tampa, Florida
  • Date: 2000-4-3 to 2000-4-5
• Publication Date: 2000

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 316-322
• Serial:
  • Transportation Research Record
  • Issue Number: 1696
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Design; Laminated wood; Load and resistance factor design; Load transfer; Mathematical models; Specifications; Wooden bridges
• Identifier Terms: American Association of State Highway and Transportation Officials
• Uncontrolled Terms: Sawn timber; Structural reliability
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00789708
• Record Type: Publication
• ISBN: 0309071224
• Files: TRIS, TRB, ATRI
• Created Date: Mar 6 2000 12:00AM