Vibration, Energy, and Pile Embedment Relationships During Driven Pile Installation

摘要

Installation of driven piles generate ground vibrations as the pile shears and displaces soil during its penetration. Typically, the magnitudes of ground vibrations from driven pile installations are greater as the pile penetrates stiff/dense soils than in soft/loose soils. For thirteen piles driven at six project sites in the Charleston, South Carolina area, ground vibration and dynamic pile measurements taken during pile installation were compared to available insitu soil testing parameters. The results showed the following: (ⅰ) peak ground vibrations generally occurred during pile installation through the dense sands located above the Cooper Marl formation, (ⅱ) the peak vibrations were typically observed along the longitudinal and/or vertical axes, and (ⅲ) the average peak vector sum vibrations within the Cooper Marl were 68% of the average peak vector sum magnitude within the dense sands.