Instrumented Monitoring and Modeling of WAS-339-2013 Prior to, During and After Superload;Final rept

摘要

Several super loads were scheduled to cross a bridge at the Muskingum River along Route 339 near Marietta (WAS-339-2013) in the summer of 2001. The largest of these (883,488 lbs. or 3,930kN) was the biggest super load in recorded Ohio history. A new power plant was being constructed nearby and huge pieces of equipment were to be transported to the site. However, a BARS-based software analysis conducted by the Structural Engineering Office of the Ohio Department of Transportation revealed possible overload conditions in connection with these load/structure combinations. A permit would not be issued without further evidence of the actual load capacity of the bridge. The bridge in question (WAS-339-2013) is a 2-lane, 6-span, 650-feet (198.250 m) steel-stringer bridge with a reinforced concrete deck, built in 1963, crossing the Muskingum River. The University of Cincinnati Infrastructure Institute (UCII) was contracted to instrument the bridge with strain transducers and conduct a series of controlled experiments with loaded dump trucks to determine the load carrying capacity of the structure. Linear superposition was used to then evaluate and verify the capacity of WAS-339-2013 for the super load passage.