Fatigue and Fracture of Bridge Steels

by Richard Roberts, Prof. of Mech. Engrg. and Mechanics; Lehigh Univ., Bethlehem, Pa.,
George R. Irwin, Univ. of Maryland, College Park, Md.,

Serial Information: Journal of the Structural Division, 1976, Vol. 102, Issue 2, Pg. 337-353

Document Type: Journal Paper


A basis for fracture safe bridge design is examined. The relative roles that fatigue and fracture play in overall bridge design are examined from a fracture mechanics viewpoint. The methods available for measuring the fracture toughness of bridge steels are indicated with their potential as quality control tests for adequate steel toughness examined. It is generally concluded that current steels provide adequate fracture toughness in most design situations.

Subject Headings: Bridge design | Toughness | Fatigue (material) | Cracking | Steel bridges | Bridge tests | Safety | Quality control

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