抄録
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.
| 本文言語 | English |
|---|---|
| 論文番号 | 012607QST |
| ページ（範囲） | 1070-1078 |
| ページ数 | 9 |
| ジャーナル | Journal of Structural Engineering |
| 巻 | 132 |
| 号 | 7 |
| DOI | |
| 出版ステータス | Published - 2006 7月 1 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 土木構造工学
- 建築および建設
- 材料科学（全般）
- 材料力学
- 機械工学