Numerical Study of Settlement Response of Piled Slabs in Soft Alluvial Deposits Underlain by Sand

Piled slabs are commonly used as a foundation solution at sites where soft alluvial deposits are encountered. This numerical study examines the response of such systems when the soft alluvial deposits are underlain by granular soils. Different pile penetration lengths in relation to the underlying granular soils are considered, i.e. the length of the piles is varied so that the toe of the pile is just above the sand layer, at the interface between the sand and alluvium and within the sand layer itself. The study presents results of the settlement response and sharing of load between the slab and piles for the different scenarios examined.