2017 H. Bolton Seed Medal Lecture: Numerical Analysis of Stability and Risk in Highly Variable Soils
D. Vaughan Griffiths Ph.D., P.E., D.GE, F.ASCE, Colorado School of Mines
There has been a rapid growth of interest in risk assessment, and the use of probabilistic methods in geotechnical engineering. This is a logical development, since soils and rocks are among the most variable of all engineering materials, and geotechnical engineers must often make do with materials they are dealt with at any particular site. Analysis of a typical stability problem may lead to a “probability of failure”, as opposed to the more traditional “factor of safety”, representing a fundamental shift in the way engineers need to think about the suitability of their designs. The lecture will include results of stability analyses of variable soils by the finite element method, and include a discussion of the factor of safety and its relationship to the probability of failure. Some methods of probabilistic analysis with varying levels of complexity will be described.
The H. Bolton Seed Medal Lecture is given annually by the recipient of the H. Bolton Seed Medal for outstanding contributions to teaching, research or practice in geotechnical engineering.
Dr. Griffiths was selected by the Geo-Institute Board of Governors to receive the 2017 H. Bolton Seed Medal “For his innovative software developments, publications, textbooks and professional short courses on finite elements and probabilistic methods. His highly-cited work on finite element stability analysis has transformed the way engineers perform slope stability analysis in practice.” In selecting him for this award, the committee particularly noted his reputation as a pioneer in numerical modeling.
For more information: http://www.asce.org/geotechnical-engineering/geo-institute/
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