Volume 12, Number 2 and B (Transaction B: Geotechnical Engineering April 2014)                   IJCE 2014, 12(2 and B): 180-185 | Back to browse issues page


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Jamshidi Chenari R, Pishgah P. Reliability measures for consolidation settlement by means of CPT data. IJCE. 2014; 12 (2) :180-185
URL: http://ijce.iust.ac.ir/article-1-867-en.html

Abstract:   (17592 Views)
In this technical note, a methodology is introduced for reliability calculation of consolidation settlement based on cone penetration test (CPT) data. The present study considers inherent soil variability which influences consolidation settlements results. To proceed reliability analysis, the measured data of a sample corrected cone tip resistance (􀝍􀯧) is detrended using a quadratic trend and the residuals are assumed to be lognormally distributed random field. Realizations of 􀝍􀯧 is generated by using spatial variability of residuals including standard deviation and the scale of fluctuation. The quadratic trend and the generated residuals are then combined to correlate shear and bulk modulus as input consolidation properties for coupled analysis and subsequently consolidation settlement was calculated by using finite difference method adopted in Monte Carlo simulations. The results of reliability analysis are presented describing the range of possible settlements by considering characteristics of uncertainties involved at the particular site. Number of realizations rendering settlements smaller than the allowable settlement must be such that guarantee proper performance or acceptable reliability index.
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Type of Study: Technical Note | Subject: Geotechnique

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