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Instrumentation of a Cable Stayed Bridge at Skagway, Alaska

Hulsey, J. L. / Delaney, D. K. / Bunch, R. B. / Briggs, R. W.

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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Instrumentation of a Cable Stayed Bridge at Skagway, Alaska

Hulsey, J. L. / Delaney, D. K. / Bunch, R. B. / Briggs, R. W.

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.

Instrumentation of a Cable Stayed Bridge at Skagway, Alaska

Hulsey, J. L. / Delaney, D. K. / Bunch, R. B. / Briggs, R. W.

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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Titel:

Instrumentation of a Cable Stayed Bridge at Skagway, Alaska

Beteiligte:

Hulsey, J. L. (Autor:in) / Delaney, D. K. (Autor:in) / Bunch, R. B. (Autor:in) / Briggs, R. W. (Autor:in)

Erschienen in:

Bridge Evaluation, Repair and Rehabilitation ; 445-462

NATO ASI Series ; 187

Erscheinungsdatum:

01.01.1990

Format / Umfang:

18 pages

ISBN:

978-94-009-2153-5 , 978-94-010-7469-8

ISSN:

DOI:

https://doi.org/10.1007/978-94-009-2153-5_33

Medientyp:

Aufsatz/Kapitel (Buch)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Bottom Flange , Load Position , Cable Stay , Main Girder , Static Load Test Engineering , Building Construction , Civil Engineering , Characterization and Evaluation of Materials

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