Model and Prototype Studies of Box Girder Bridge

by Raymond Eugene Davis, Sr. Bridge Engr.; California Div. of Highways, Bridge Dept., Sacramento, CA,
Charles F. Scheffey, Dir.; Ofc. of Res., Federal Highway Admin., Washington, DC,
Gary A. Castleton, Asst. Bridge Engr.; California Div. of Highways, Bridge Dept., Sacramento, CA,
Evan E. Evans, Asst. Bridge Engr.; California Div. of Highways, Bridge Dept., Sacramento, CA,


Serial Information: Journal of the Structural Division, 1972, Vol. 98, Issue 1, Pg. 165-183


Document Type: Journal Paper

Abstract: A full-size, reinforced concrete, box girder bridge, with an 80 ft. span, and a quarter-scale model of the same were instrumented and tested. This paper presents model test data, augments the scope of prototype analyses, and establishes three-way correlations among prototype and model data and theoretical analyses. Additional studies are made of transverse distributions of live load resisting moments to prototype stringers, including effects of an intermediate diaphragm and barrier railings on those distributions. Three-way correlations of resisting moment distributions are very good. The theory exaggerated slightly the influence of the diaphragm by assuming it to be rigid. Influence of the barrier curbs was accurately assessed. Theoretical transverse strain distributions did not always agree with those observed.

Subject Headings: Girder bridges | Model tests | Data processing | Concrete bridges | Moment distribution | Reinforced concrete | Box girders | Data analysis

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