| This thesis describes research that developed a procedure for baseline finite element modeling, instrumentation and non destructive load testing, model updating and load rating of a typical highway bridge. The Vernon Avenue Bridge over the Ware River, located in Barre, Massachusetts was used as the pilot bridge. The bridge was instrumented throughout its construction phase, in preparation for a static truck load test that was performed just prior to the bridge opening.The strain data collected during the load test was used to calibrate a detailed baseline finite element model in an effort to represent the "true" system behavior of the bridge. Once the model was calibrated it was used to calculate load rating factors and live load distribution factors. The calculated factors from the model were then compared with factors calculated using the measured strain data as well as those specified in the AASHTO code.It is proposed that the updated finite element model be submitted to the bridge owner with the final design submission to be used as a tool to assist in planning, bridge inspections, routine maintenance decisions, bridge load rating, damage assessment, and rehabilitation throughout the life of the bridge. |
