On the Axial Load-Bearing Behavior of Vibrated and Impact Driven Full Displacement Piles-Video

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The study compares the axial load-bearing behavior of full-displacement piles installed by vibration, impact driving, and cyclic quasi-static loading. Scale tests in dry sand (1:10) measured installation behavior and subsequent load–settlement response. Impact-driven and vibrated piles showed similar load capacities and settlement curves, while cyclic quasi-static tests produced higher capacity and more brittle failure. The findings suggest that dynamic effects during vibration reduce axial resistance, potentially because vibration-induced liquefaction lowers skin friction. Vibrated piles also failed more ductilely than those installed in the cyclic quasi-static tests.

Keywords

axial load-bearing behavior

full-displacement piles

vibration installation

impact driving

settlement response