The results offive axial loading tests on large-diameter drilled piles socketed into rock are discussed in this paper.The piles were built on an Italian site where several shallow rock formations are found below loose soils. Pile sockets involved rocks with different strengths such as marl, limestone, gypsum, and diabase. The pile response during static loading depended on the rock strength, the length ofthe socket in the rock, and the length ofthe pile in the soil. In this paper, an analytical model is used to evaluate the limit skin friction at the pile-rock interface. The model is based on the hyperbolic transfer function technique and allows back-analyses to be carried out easily. Following current empirical approaches, a preliminary appraisal of the model parameten is made using extensive data from laboratory and in situ tests. The parameters are subsequently modified by fitting the measured pile head displacements to computer simulation results. The shaft resistance values obtained from the analyses are compared with published values and are found to be lower.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.