DBPapers
DOI: 10.5593/SGEM2016/B32/S13.034

RANDOM FINITE DIFFERENTIAL METHOD USED TO ESTIMATE PIPELINE TIME LIFE ON SUGGESTED SAFETY LEVEL WITH CORROSION EFFECTS

J. Kozubal, D. Steshenko, A. Szot
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-62-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 2, 257-264 pp

ABSTRACT
The one of the most important factor limiting the lifetime is corrosion especially for sewer pipes and it has got a large impact on their operational costs. These phenomena has non-deterministic nature and with a description of strength characteristics of soil around a construction as random field is defining the complex reliability problem. In the study we were used Gaussian two-dimensional random fields generator with folded functions describing the scale effect of fluctuations. Procedures were written in Fish programming language for calculate parameters of material zones in Flac 2D by the method of local averaging. A numerical example will be provided to illustrate the proposed method with a view to prevent unexpected failures of the structure during its service life. The proposed methodology can help the design and management of existing pipelines in making correct decisions concerning the intervention to ensure the safe and serviceable operation of the pipes.

Keywords: GRF, random finite difference method, pipeline, corrosion, safety

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