DBPapers
DOI: 10.5593/sgem2012/s02.v2006

CONSIDERATION OF VARIABILITY OF SOIL PARAMETERS IN PROBABILISTIC SOIL MODELING

N. DAVIDOVIC, V. PROLOVIC, D. LUKIC
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 39 - 46 pp

ABSTRACT

Geotechnical design in past decades has been based on a conventional deterministic
approach. However, this approach takes no account of the large uncertainty resulting
from in situ soil variability and the probability of failure is not quantified. An alternative
and more recent is probabilistic approach which takes into account the uncertainty
involved in the soil parameters. Prediction of the performance of "soil-structure" system
in real conditions requires as accurately as possible modeling of soil parameters. In
order to provide more accurate modeling of the soil layers using probabilistic methods,
it is necessary to consider the spatial variability of soil parameters. In this paper various
statistical parameters such as the mean value, coefficient of variation, variance, scale of
fluctuation, etc, and probability distributions (normal, lognormal, beta, etc.) commonly
used to describe this variability, are reviewed. The paper also presents the procedures
for quantifying spatial variability of soil parameters.

Keywords: soil, parameter, deterministic, variability, probabilistic, modeling