Nonlinear Theory (Masopust)
The nonlinear theory constructs the load-settlement curve assuming that the evolution of settlement as a function of resistance up to full mobilization of skin friction can be represented by a parabola. After that the relationship is linear as displayed in the figure. This method was derived from equations of regression curves constructed on the basis of statistical analysis of the results of static loading tests of piles and for the determination of vertical bearing capacity it employs regression coefficients. Further details are provided herein.
Load-settlement curve of a pile
Masopust, J.: Vrtane piloty. 1st edition, Prague, Cenek a Jezek, 1994, 263 p.
Masopust, J., Glisnikova, V.: Zakladani staveb Modul M01. 1st edition, Brno, AN CERM, 2007, 182 p., ISBN 978-80-7204-538-9.