Abstract
A 300 ft (91.4 m) cable stayed bridge near Skagway, Alaska carries in addition to normal traffic 160,000 lb (71.576 kg) ore trucks. It has a laminated timber deck supported by transverse floor beams spanning two stiffened ASTM A588 steel box girders. Two inclined cables stay the girders near midlength to a single tower. The abutments and tower were rock anchored to the canyon walls.
Information to address questions due to heavy loads and support degree of fixity was provided by instrumenting and field testing the bridge for static loads. Static loads were: a) a snooper truck; and b) ore trucks. Strains and environmental conditions were monitored.
Experimental results and a partial comparison with a two-dimensional analysis are presented. The maximum experimental strains were 224 micro-strain in the girder and 134 micro-strain in the tower support for the ore truck tests. Ore truck loads did not vary significantly and like loading produced excellent repeatability.
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References
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© 1990 Kluwer Academic Publishers
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Hulsey, J.L., Delaney, D.K., Bunch, R.B., Briggs, R.W. (1990). Instrumentation of a Cable Stayed Bridge at Skagway, Alaska. In: Nowak, A.S. (eds) Bridge Evaluation, Repair and Rehabilitation. NATO ASI Series, vol 187. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2153-5_33
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DOI: https://doi.org/10.1007/978-94-009-2153-5_33
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7469-8
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