INFLUENCE OF BRIDGE APPROACH, SURFACE CONDITION, AND VELOCITY ON IMPACT FACTORS FOR FATIGUE-PRONE DETAILS

An impact study on a long-span continuous highway steel girder bridge is described. Crawl and full-speed test data were analyzed to examine the influence of bridge approach, surface condition, and truck velocity on impact factors for fatigue-prone details in both main and secondary bridge members. The measured impact factors for fatigue stress categories A, B, E, and E' details were compared with values obtained using the American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications formula. For fatigue-prone details, the test results showed that surface roughness, truck velocity, and bridge approach affect the impact factor. Measured impact factors varied with the location of the detail. Also, the study showed that the AASHTO design impact factors were unconservative for details located in the bridge approach or end span.

• Record URL:
  https://doi.org/10.3141/1624-20
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=INFLUENCE+OF+BRIDGE+APPROACH%2c+SURFACE+CONDITION%2c+AND+VELOCITY+ON+IMPACT+FACTORS+FOR+FATIGUE-PRONE+DETAILS&author=S.+Clarke&author=J.+Deatherage&author=D.+Goodpasture&author=E.+BURDETTE&publication_year=1998
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309064694
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1624, Structural Analysis and Design: Bridges, Culverts, and Pipes.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Clarke, S N
  • Deatherage, J H
  • Goodpasture, D W
  • BURDETTE, E G
• Publication Date: 1998

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 166-179
• Serial:
  • Transportation Research Record
  • Issue Number: 1624
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bridge approaches; Bridge members; Evaluation; Girder bridges; Highway bridges; Long span bridges; Metal bridges; Motor vehicles; Pavements; Speed; Steel bridges; Traffic speed
• Uncontrolled Terms: Fatigue analysis; Impact factor; Pavement conditions
• Subject Areas: Bridges and other structures; Design; Highways; Pavements; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00756085
• Record Type: Publication
• ISBN: 0309064694
• Files: TRIS, TRB
• Created Date: Nov 3 1998 12:00AM