Graduate Thesis Or Dissertation

 

A determination of ultimate pile capacity in clayey silt Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/t148fk782

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  • Predetermining the ultimate capacity of piles driven into purely cohesive soils and purely cohesionless soils involves, respectively, the consideration of soil shear strength in a completely undrained and a completely drained condition. For the intermediate cases concerning soils that possess both cohesion and internal friction (silts, clayey silts, sandy clays, etc. ) the capacity prediction may assume either condition of drainage depending upon the characteristics of the soil, its stress history, and the duration of load. The actual conditions of failure for piles driven into these soils are uncertain unless test piles can be observed under a series of loads to failure. This study involves the determination of the capacity of an individual pile driven into a clayey silt. Capacity predictions based upon static formulas by Terzaghi and Peck, Meyerhof and William Moore are calculated for both drained and undrained conditions around the pile. By the performance of a series of load tests is is found that in the soil encountered the ultimate load supported by the pile is best described by the Meyerhof determination, assuming a state of complete drainage.
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