State-of-the-art review and design of grouted duct connections for precast bridge columns

The use of prefabricated bridge columns in seismic regions is challenging since performance data on precast column connections limited. A handful accelerated construction (ABC) details to connect adjoining members have been experimentally investigated, and some were found viable for applications field deployment. connection consisting ducts filled with conventional grout the focus present study. In this type, longitudinal bars are protruded out inserted into grout-filled matching number configuration bars. state-of-the-art review grouted duct studies component tests utilizing type presented. preliminary design equation proposed based collected from literature. Subsequently, validity evaluated through pullout testing 12 full-scale grouted-duct specimens. Finally, a refined all available test data, guidelines developed facilitate ABC high regions. These American Association State Highway Transportation Officials (AASHTO) possible adoption as national specifications.