Seismic Performance of Emulative Precast Bridge Column Elements with Grouted Coupler Connections

摘要

Three half-scale bridge column models were recently tested at the University of Nevada, Renoto investigate the performance of precast column-to-footing connections for accelerated bridge construction(ABC) in areas of high seismicity. Models were subjected to slow cyclic loading at increasing levels of drift. Abenchmark column with conventional cast-in-place (CIP) details was designed. Two other column modelswere precast and incorporated emulative grouted coupler connections in the plastic hinge region. Resultsindicate that the precast connections tested are emulative of CIP construction in with regards to damagelevels, hysteretic behavior, and energy dissipation but had slightly reduced drift capacity.