Modeling of Pile Footings and Drilled Shafts for Seismic Design

摘要

This report documents two studies that were conducted to review, assess, and211u001eprovide recommendations regarding the seismic design of bridge foundations. 211u001eSpecifically, the report addresses modeling approaches and parameters that affect 211u001ethe seismic design and response of pile groups and drilled shafts. The report 211u001eattempts to bridge the interface between the structural and geotechnical design 211u001eprocess by describing a two-step design and analysis procedure for these bridge 211u001efoundation components. Recent research results on pile group effects and the 211u001edesign of pile foundations to resist lateral spreading of liquefiable soils are 211u001ealso reviewed. Recommendations are provided concerning: modifications to p-y 211u001ecurves to account for cyclic loading conditions, pile group effects and soil-pile 211u001einteraction behavior, and development of p-y curves for the design of drilled 211u001eshafts.