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Prediction of pile capacity from stress‐wave measurements: Some numerical aspects
Author(s) -
Chow Y. K.,
Wong K. Y.,
Karunaratne G. P.,
Lee S. L.
Publication year - 1988
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610120505
Subject(s) - pile , displacement (psychology) , stress wave , finite element method , stress (linguistics) , boundary (topology) , boundary value problem , numerical analysis , geology , structural engineering , geotechnical engineering , mathematics , mathematical analysis , engineering , psychology , linguistics , philosophy , psychotherapist
The analysis of measured stress waves for the prediction of static pile capacity is described. The usual method of using the measured velocity record as the input boundary condition in a wave equation analysis with a finite element model, if not properly implemented, can lead to significant numerical errors. An alternative scheme using an accurate prescribed displacement procedure with the measured displacement record (obtained from the integration of the velocity) is proposed, and is shown to be very efficient. These aspects of the numerical modelling procedure are illustrated by a case study.