Load Rating of Curved Composite Steel I-girder Bridges through Load Testing with Heavy Trucks

摘要

This paper summarizes measured versus computed results from a field test with heavy live load conducted on a multi-span, horizontally curved steel I-girder bridge. Eight 72,000 lbs trucks were placed on the bridge in several static and dynamic loading configurations, and results were compared to those obtained from grillage analyses. Through comparison with other field and experimental tests in the literature, load rating procedures both with and without the use of load testing were then investigated for horizontally curved steel I-girder bridges based upon use of the AASHTO Load and Resistance Factor Rating procedures.