Naslov
Multi-objective optimization of retaining wall using genetic algorithm

Autori
Dodigović, Filip ; Ivandić, Krešo ; Jug, Jasmin ; Agnezović, Krešimir

Izvornik
Environmental engineering = Inženjerstvo okoliša (1849-4714) 8 (2021), 1-2; 58-65

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, stručni

Ključne riječi
geotechnical analysis ; NSGA-II ; optimization ; retaining wall ; Eurocode 7

Sažetak
The paper investigates the possibility of applying the genetic algorithm NSGA-II to optimize a reinforced concrete retaining wall embedded in saturated silty sand. Multi-objective constrained optimization was performed to minimize the cost, while maximizing the overdesign factors (ODF) against sliding, overturning, and soil bearing resistance. For a given change in ground elevation of 5.0 m, the width of the foundation and the embedment depth were optimized. Comparing the algorithm's performance in the cases of two- objective and three objective optimizations showed that the number of objectives significantly affects its convergence rate. It was also found that the verification of the wall against the sliding yields a lower ODF value than verifications against overturning and soil bearing capacity. Because of that, it is possible to exclude them from the definition of optimization problem. The application of the NSGA-II algorithm has been demonstrated to be an effective tool for determining the set of optimal retaining wall designs.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo, Interdisciplinarne tehničke znanosti

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