Comparison of Rock-Socketed Pile Capacities Obtained from Load Testing and Empirical Methods

Abstract

Comparison of Rock-Socketed Pile Capacities Obtained from Load Testing and Empirical Methods In this paper, axial bearing capacities of ten rock-socketed piles constructed in Turkey are calculated and compared using load tests and empirical correlations. The load test results are evaluated using suggested approaches from the literature relying on mathematical models proposed for non-failed piles. Empirical correlations typically determine the skin friction and end bearing of piles separately. Generally skin friction governs the capacity of rock-socketed piles until a threshold displacement is reached; after which point the tip resistance has a significant contribution. In this study the most appropriate empirical methods for determining the skin and tip capacities under different conditions are discussed. Furthermore, the limit displacement value for skin friction is examined.