Field Measurements of Muskwa River Bridge

by Walter Dilger, (M.ASCE), Prof. of Civ. Engrg.; Univ. of Calgary, Calgary, Alberta, Canada,
Amin Ghali, (M.ASCE), Prof. of Civ. Engrg.; Univ. of Calgary, Calgary, Alberta, Canada,
Mo S. Cheung, (M.ASCE), Manager; Civ. Engrg. Development, Public Works Canada, Ottawa, Ontario, Canada,
J. C. Beauchamp, Chief Bridge Engr.; Public Works Canada, Ottawa, Ontario, Canada,


Serial Information: Journal of the Structural Division, 1981, Vol. 107, Issue 11, Pg. 2147-2161


Document Type: Journal Paper

Abstract: The behaviour of a continuous, steel-concrete composite box girder bridge was monitored during construction of the concrete deck and during the first three years of operation. It was observed that cracking developed in the deck which was attributed to the temperature developed in the deck shortly after casting, the sequence of casting, the shrinkage of the deck concrete, and the rapid heating of the steel boxes exposed to direct sunlight. It was also found that the strain distributions across the depth and the width of the steel boxes are more or less linear. This beam theory can be applied with confidence for the design of this type of structure.

Subject Headings: Steel decks | Concrete | Steel | Composite bridges | Girder bridges | Bridge decks | Infrastructure construction | Temperature effects

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