Effect of strain history on cone penetration resistance and cyclic strength of saturated sand

This series of tests demonstrate the use of dynamic centrifuge model testing to develop CPT based correlations for the cyclic strength of soil. Level profiles of saturated Ottawa sand were subjected to multiple shaking events until the models were no longer liquefiable. In-flight cone penetration tests track the progressive change in relative density over multiple shaking events. Dense arrays of accelerometers and pore pressure transducers provide the basis for computing cyclic stress ratios, shear strains, and volumetric strains through inverse analyses. These tests with clean sand facilitate comparison of the results with liquefaction triggering correlations developed by other means.