Structural concrete pile-wharf connections under cyclic lateral loading

This paper discusses the development of analytical models, using the fiber section technique, to describe the nonlinear structural behavior of concrete pile-wharf connections subjected to cyclic lateral loading. The models are validated in part using experimental results obtained from the literature. At the section level, comparisons are primarily focused on the stress-strain and moment-curvature behaviors, while at the element level comparisons of lateral force and moment vs. displacement are utilized to shed light on the global behavior of a pile-wharf connection. Results indicate that the developed models are able to accurately predict the global and local experimental behavior, even including the occurrence of various damage states. Finally, a study is conducted to explore the impact of using Carbon Fiber Reinforced Polymer (CFRP) jackets at the plastic hinge zone of the pile on the cyclic behavior of the connection. The application of CFRP jackets can delay spalling of the cover concrete and thus enhances the strength and ductility of the connection.