Modeling the Natural Variability of Over-consolidated Clay in Adelaide, South Australia

Abstract

The properties of soil and rock are, as a result of their formation, variable from one location to another. In terms of geotechnical engineering analysis and design, it is often desirable to quantify this spatial variability. Due to the complexity of this variability, models that have been developed have necessarily focused on statistical techniques. This paper presents a brief overview of the methods commonly applied to modeling spatial, or natural, variability of geotechnical properties. Particular attention is given to random field theory and geostatistics as these have been more widely adopted and have shown the most promise. Following their treatment, a case study is presented to illustrate the application of these methods to geotechnical engineering. Finally, the application of spatial variability to various geotechnical engineering problems is briefly discussed in order to demonstrate the benefits of incorporating spatial variability in geotechnical engineering analysis and design. © 2007 Taylor & Francis Group, London.