Shear and Flexural Strengthening of Reinforced Concrete Bridges Using Titanium Alloy Bars

摘要

Titanium alloy bars (TiABs) were developed to strengthen deficient reinforcedconcrete (RC) bridges. TiABs provide high strength, ductility, durability, and the ability tofabricate mechanical anchorages at the ends. Laboratory experiments on full-size RC bridgegirders with TiABs, in both shear and flexural failure modes, showed increased strength,significant visual distress prior to failure, nonductile failure modes shifted to ductile modes, anddesign approaches conservatively predicted strength using the TiABs yield strength.