Wave equation analysis of piles has seen many improvements since the 1950s such as including a thermodynamic diesel hammer model and residual stress. Commercial software packages (such as GRLWEAP) are now available to perform the analysis.
One of the principal uses of this method is the performance of a driveability analysis to select the parameters for safe pile installation, including recommendations on cushion stiffness, hammer stroke and other driving system parameters that optimize blow counts and pile stresses during pile driving. For example, when a soft or hard layer causes excessive stresses or unacceptable blow counts.
Hammers used for driven piles: from the pile driving contractors association's "installation specification for driven piles".
Aug 01, 2010; Pile driving hammers shall be of the size needed to develop the energy required to drive the piles at a blow count that does not...
The influence of changing shaft friction of the pile to wave propagation/ Grunto stiprio, kintancio isilgai polio, itaka smugio bangos sklidimui polyje.(Report)
Jun 01, 2011; 1. Ivadas Daugeliu atveji tikroji polio pagrindo laikomoji galia gali buti nustatyta atlikus statinius arba dinaminius bandymus....