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|Title:||The application of genetic algorithms to optimisation problems in geotechnics|
|Citation:||Journal of Computers and Geotechnics, 1993; 15(1):1-19|
|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|
|Appears in Collections:||Civil and Environmental Engineering publications|
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