Column Reinforcement Extended Into Enlarged (Type II) Shafts

Professor P. Benson Shing

In a project sponsored by Caltrans, Professor Shing is leading an experimental and analytical study to characterize the bond-slip behavior of large-diameter bars, assess the level of conservatism in current Caltrans specifications, and develop new design recommendations that can further minimize the required development length and improve the performance of these shafts under extreme seismic load conditions.