The idea of PGA stream computations for soil slope stability evaluation

Chi Tran; Piotr Srokosz

doi:10.1016/j.crme.2010.08.001

The idea of PGA stream computations for soil slope stability evaluation

Chi Tran ¹ ; Piotr Srokosz ¹

¹ University of Warmia and Mazury in Olsztyn, Heweliusz 10/102, Olsztyn, Poland

Comptes Rendus. Mécanique, Volume 338 (2010) no. 9, pp. 499-509.

Abstract

Designing and constructing of road embankments, deep excavations, landslide and snow avalanche predictions or profiling construction sites in slanting terrain need slope stability evaluations. Determination of a safety factor and the position of a potentially critical slip surface is one of the essential issues in classical and modern soil mechanics, which still remains a very important problem in engineering practice. Most of the stability evaluation methods, i.e. based on limit equilibrium assumptions, need optimization, which can be successfully realized with the assistance of a genetic algorithm. The authors propose a variational approach with a four-step technique to determination of the critical height of a slope, which can be treated as an alternative and variant method to the generally applied limit equilibrium and/or finite element methods. Some common obstacles encountered while adapting classical optimization procedures have been solved by application of a parallel genetic algorithm. Substantial acceleration of computations has been achieved by introducing SIMD stream technology, which generally relies on modern graphics processing units. Examples of the results of a slope stability analysis performed using the fast parallel computation technique are also presented.

Received: 2010-04-15
Accepted: 2010-08-02
Published online: 2010-08-31

DOI: 10.1016/j.crme.2010.08.001

Mots-clés : Analytical mechanics, Slope stability, Variational calculus, Genetic algorithm, Stream computing

Author's affiliations:

Chi Tran ¹; Piotr Srokosz ¹

¹ University of Warmia and Mazury in Olsztyn, Heweliusz 10/102, Olsztyn, Poland

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Chi Tran; Piotr Srokosz. The idea of PGA stream computations for soil slope stability evaluation. Comptes Rendus. Mécanique, Volume 338 (2010) no. 9, pp. 499-509. doi : 10.1016/j.crme.2010.08.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2010.08.001/

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