Pile Installation Effect on Mobilized Side Shear Resistance in Fraser River Deposits

The friction fatigue phenomenon correlates the effect of the installation method on the degradation of mobilized side shear resistance, with vibro-hammers having been observed to result in further degradation of the side shear resistance in comparison with impact and jacked installation methods as reported by White (2005). In the Lower Mainland of British Columbia, Canada, nearshore structures constructed along the Fraser River are generally supported on open-ended pipe piles that are either partially or fully installed using vibro-hammers. This paper will review the results of high-strain dynamic testing on open-ended pipe piles installed in the Fraser River sediments to assess the effect of the installation method on the predicted mobilized side shear resistance