Fatigue life of girders with trapezoidal corrugated webs

Richard Sause, Hassan H. Abbas, Robert G. Driver, Kengo Anami, John W. Fisher

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

Fatigue design criteria are necessary to design steel corrugated web girders for highway bridges. The paper presents research on the fatigue life of steel bridge I-girders with trapezoidal web corrugations. Eight large-scale test girders were fabricated from HPS 485W steel and fatigue-tested in four-point bending. The web-to-flange fillet welds were made using semiautomatic gas metal arc welding (GMAW) or robotic GMAW. Fatigue cracks initiated in the tension flange at the web-to-flange fillet weld toe along the inclined web folds and adjacent bend regions, and propagated in the flange. The results demonstrate that steel corrugated web I-girders exhibit a fatigue life that is longer than that of conventional steel I-girders with transverse stiffeners. For design of corrugated web I-girders, the Category B′ design curve of the AASHTO LRFD specifications is recommended for finite life fatigue design calculations, and a value of 96.5 MPa (14.0 ksi) is recommended for the constant amplitude fatigue limit.

Original languageEnglish
Article number012607QST
Pages (from-to)1070-1078
Number of pages9
JournalJournal of Structural Engineering
Volume132
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1
Externally publishedYes

Keywords

  • Bridges, highway
  • Corrugating
  • Fatigue
  • Girders
  • Webs

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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