Reliability measures for consolidation settlement by means of CPT data

In this technical note, a methodology is introduced for reliability calculation of consolidation settlement based on conepenetration test (cpt) data. the present study considers inherent soil variability which influences consolidation settlementsresults. to proceed reliability analysis, the measured data of a sample corrected cone tip resistance (􀝍􀯧) is detrended using aquadratic trend and the residuals are assumed to be lognormally distributed random field. realizations of 􀝍􀯧 is generated byusing spatial variability of residuals including standard deviation and the scale of fluctuation. the quadratic trend and thegenerated residuals are then combined to correlate shear and bulk modulus as input consolidation properties for coupledanalysis and subsequently consolidation settlement was calculated by using finite difference method adopted in monte carlosimulations. the results of reliability analysis are presented describing the range of possible settlements by consideringcharacteristics of uncertainties involved at the particular site. number of realizations rendering settlements smaller than theallowable settlement must be such that guarantee proper performance or acceptable reliability index.