This is another in a series of technical reports on vibratory and impact-vibration pile driving equipment. It is scheduled to be presented at the 2024 Arts and Research Conference at the University of Tennessee at Chattanooga.
You can download the paper here.
The abstract is as follows:
Abstract: Driving piles by longitudinal vibrations has been a proven technology since the Gorky dam project in the late 1940’s. Shortly after that drivers which included both longitudinal and rotational oscillations were developed for driving tubular piles, both steel and concrete. Recent renewed interest in this technology for large offshore piles has occasioned the re-examination of the analysis of these piles using methods similar to those that Soviet developers used. In this paper a purely plastic model for both shaft and toe resistance is used parametrically to analyse the performance of these machines. Starting with the free-hanging case of no resistance with or without the effect of gravity, a dimensionless, parametric model was developed to analyse the system. Comparison with earlier analyses of a similar kind is included. The results shown an improvement in the movement of the pile per rotation of the eccentrics but further work needs to be done with improved soil modelling for more conclusive results.
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