United States Department of Transportation
i
Development and evaluation of pile "high strain dynamic test database" to improve driven capacity estimates : phase 2 report.
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2014-01-01
[PDF-7.14 MB]
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Abstract:The Maine Department of Transportation (MaineDOT) has noted poor correlation between predicted pile resistances
calculated using commonly accepted design methods and measured pile resistance from dynamic pile load tests (also
referred to as high strain dynamic tests) conducted in accordance with ASTM D-4945. The MaineDOT requested
that the University of Maine examine and evaluate their current static pile capacity design methodologies using the
results from dynamic load tests on piles as a standard. The authors have used the term capacity in this report since
the reports for the dynamic load test database used capacity, and most references used capacity. Capacity can be
used interchangeably with the term ‘resistance’ used by AASHTO in LRFD applications. The intent of the final
product is to provide MaineDOT with calculation methods that provided the most reliable capacity estimates. More
reliable calculation methods will result in more cost efficient designs. The work which went into this report was
essentially divided into two phases: the creation of a database which encompassed selected, available project data
and comparison of static capacity analysis methods to investigate which combination is most reliable. The second of
the two phases is detailed in this report.
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