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Type: Journal article
Title: The application of genetic algorithms to optimisation problems in geotechnics
Author: Simpson, A.
Priest, S.
Citation: Computers and Geotechnics, 1993; 15(1):1-19
Publisher: Elsevier
Issue Date: 1993
ISSN: 0266-352X
Statement of
Angus R. Simpson and Stephen D. Priest
Abstract: The paper presents an introduction to a relatively new optimisation technique, known as genetic algorithms, and discusses its potential for application to geotechnical problems. The method of genetic algorithms is a search technique based on the mechanics of natural selection and natural genetics implemented by coding each state of a particular optimisation problem as a string of binary digits. The objective function provides a measure of the 'fitness' of each state. Further generations of the binary string are created by a process of reproduction, crossover and mutation that favours the survival of the fitter strings. An optimal, or near optimal solution is identified after a relatively small number of generations that represent only a small fraction of the complete set of possible enumerations. After a brief explanation of the principal elements of genetic algorithms the paper outlines the background theory to the identification of discontinuity frequency extrema in fractured rock masses - an optimisation problem that is computationally demanding. The technique is then implemented through a case example involving a rock structure containing up to 100 discontinuities, each one treated as a set. It is shown that genetic algorithms provide an efficient and computationally powerful optimisation technique.
Rights: © 1993 Elsevier Science Publishers
DOI: 10.1016/0266-352X(93)90014-X
Appears in Collections:Aurora harvest
Civil and Environmental Engineering publications

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