Title: Dynamic Wheel Loads from Bridge Strains: Laboratory Studies
Abstract: Laboratory tests are described that explore the validity of using bridge measurements to determine not only equivalent static wheel loads but also their dynamic variation with time. A l2.2-m span composite girdcr was loadcd with one to four dynamic loads fixed in location. Acceptable load predictions were obtained from measured strains and cOlnputed bending moments at the one-eighth points of the span. Estimates of dynamic load at a reduced accuracy were also obtained from measured deflections. Accuratc dynamic calibration tests were necessary to find the equivalent beam-bending stiffness used iu the dynamic interpretive analysis and also the strain-bending moment relationships.
Publication Year: 1988
Publication Date: 1988-08-01
Language: en
Type: article
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