ABSTRACT
This chapter covers piled foundations. It describes the piled foundations and explains the construction methods for different offshore pile types. The chapter presents the design methods for predicting axial capacity. Two types of offshore pile are described: conventional driven steel piles and grouted piles. Open-ended driven steel pipe piles are by far the most common offshore platform foundation. They are a type of displacement pile: the pile is installed by displacing rather than removing the soil. Drilled and grouted piles usually comprise a steel tubular pile inserted into an oversize drilled hole, which is filled with grout. Grouted driven piles represent a hybrid of a driven piles and a grouted pile case that has been proposed for calcareous soils. The aim is to combine the simple installation process of a driven pile with the high shaft capacity of a grouted pile.
