Improving design phase evaluations for high pile rebound sites [summary].
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2016-05-01
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Abstract:In Florida, many structures are built on driven piles. Though it seems straightforward, pile
driving involves complex interactions between the pile, the hammer, the soil, and driving
procedures. Soils can even rebound, or push back, after each hammer blow. Some rebound is
expected, but when it is beyond certain limits, it is referred to as high pile rebound (HPR). Piles
designed for new construction in areas of the state that have historically encountered HPR
require additional hammer blows to drive the pile
to the desired depth. These additional blows risk
damage to the pile and a loss of supportive capacity.
Predicting HPR requires a better understanding of the
engineering properties of various Florida soils.
Florida Institute of Technology researchers conducted
a testing program to help engineers determine typical
properties of soils encountered during pile installation
when HPR occurs.
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