Development, installation and testing of an innovative epoxy anchored screw pile

This thesis details the development and the installation of a new application of foundations for cable stays that can be used in areas where ground conditions present good to very good rock under a layer of soil either clay or sand. The Epoxy Anchored Screw Pile presented in this work make screw piles a viable stand-alone option in all ground conditions including early refusal on rock through the addition of an epoxied socket. The aim is to reduce the displacement at the head of the screw pile with the addition of an epoxied socket. This was achieved through the development of a practical installation methodology and full scale testing which is documented in this thesis. The results from the testing show that the socket can provide an increase in tensile capacity and reduce the displacement by a factor of up to 20 at similar loads to that of a screw pile without the epoxy socket. The addition of the epoxy socket required only hand tools and can be installed rapidly.