Date of Award
Master of Science
Civil, Construction, and Environmental Engineering
Characterizing the lateral load behavior of cast-in-drilled-hole (CIDH) shafts is challenging due to the complex interaction of the foundation with the surrounding soil. In the current state of practice, a number of challenges exist when accounting for the effects of soil-foundation-structure-interaction in the seismic design of drilled shafts in cohesive soils. The project identifies and discusses the challenges associated with practice today when determining the lateral load response of bridge columns supported on drilled shafts. After identifying the shortcomings, a new equation based approach to the modeling of the integrated column-foundation system is presented. This approach uses a set of three springs placed at critical locations to define the lateral load response. This proposed simplified model was then shown to adequately capture the lateral load behavior when compared with experimental data and numerous analytical models.
Aaron Trask Shelman
Shelman, Aaron Trask, "Seismic design of drilled shafts in clay" (2009). Graduate Theses and Dissertations. 11101.