Since its introduction in 1988, GRLWEAP (which is based on
the WEAP program of 1976) has achieved wide popularity
throughout the world. The program simulates the behavior of a
pile (a slender elastic rod) and the surrounding soil (an
elastic, plastic and viscous material) under the impact of a
pile driving hammer. Powerful options combine the basic analysis
of one hammer blow into the simulation of a complete pile
driving process.
Today the GRLWEAP software is recognized by many specifying
agencies as the most reliable predictor of dynamic pile
driving stresses, hammer performance, and either blow count or
bearing capacity of an impact driven pile.
Gallery
Time Saving Options
Extensive internal database that includes over 1600
hammer models and associated driving system
components. Database is editable and can be expanded by
each user
Easy user selection of hammers within program
Users can modify hammer parameters
Automatic model generation
Simple input/output file management
Screen display of analysis results in numerical or graphical form
User-defined pile, cushion and soil data
Analysis Options
Bearing graph: capacity and stress maxima vs blow
count
Driveability analysis: blow count and stresses
vs. depth allowing for consideration of variable pile
length, loss of soil set-up, cushion deterioration and
others
Inspector's Chart: required blow count for variable
stroke (energy) and fixed bearing capacity
Residual stresses for improved realism of simulation
Vibratory hammer analysis
Double pile analysis (e.g., mandrel driven piles)
Variable (program calculated) or constant stroke
analysis for diesel hammers.
Bounce chamber pressure for closed end diesel hammers
SI or English units
Numerical Process
Diesel hammers with thermodynamic analysis
Smith-type lumped mass hammer and pile model with
Newmark beta-method and predictor corrector type analysis
Non-linear/bilinear stress-strain analysis of slacks,
splices, cushions and other material interfaces
Up to 498 pile segments for realistic analysis of
piles with up to 500 m lenght
Smith type soil model with four additional soil
damping options
Soil model extensions (for research applications) for
soil plug, radiation damping among others
