ABSTRACT
The selection of proper design parameters for assessing pile’s axial capacity involves a significant degree of uncertainty as design concepts aren’t necessarily consistent with the methods or procedures involved in installation of piles. To obviate this lacuna and to develop a rational design procedure, a new technique for back-analyzing a cyclic pile load test is presented to estimate ultimate base and shaft resistances, as well as initial stiffnesses of the shaft and base of the pile. The novel method facilitates ‘a priori’ estimation of required pile design parameters based on geotechnical characteristics, geometry (shape, length, and diameter), construction methodologies, and other uncertainties present on the site during pile installation. The method was applied to the results of cyclic pile load tests for subsurface strata of typical Yamuna Sand overlying weathered rock at certain locations.
