| Title: | Evolutionary-based prediction of ε50 for the lateral load-displacement behavior of piles in clay |
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| Authors: | ID Ebrahimian, Babak (Author)
ID Nazari, Aida (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder) |
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| Files: |  Acta_geotechnica_Slovenica_2013_Ebrahimian,_Nazari_Evolutionary-based_prediction_of_epsilonsub50_for_the_lateral_load-displacement_behav.pdf (676,68 KB)
MD5: 7AB1A37F969BB3F753FD9E8E7C843584
PID: 20.500.12556/dkum/5ed57a72-03a2-44fc-ac37-37ddfd8dad2b
 http://fgserver3.fg.um.si/journal-ags/2013-2/article-4.asp
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | Analyzing piles that are subjected to lateral loads reveals that their behavior depends on the soil’s resistance at any point along the pile as a function of the pile’s deflection, known as the p-y curve. On the other hand, the deformation characteristics of soil defined as “the soil strain at 50% of maximum deviatoric stress (ε50)” have a considerable effect on the generated p-y curve. In this research, several models are proposed to predict ε50 specifically for designing the very long pile foundations of offshore oil and gas platforms in the South Pars field, Persian Gulf, Iran. Herein, ε50 is evaluated using extensive soil data, including in-situ and laboratory test results using evolutionary polynomial regression (EPR). The effects of the undrained shear strength, the normalized tip resistance of the cone penetration test, the over-burden pressure, the plasticity index and the over-consolidation ratio on ε50 are investigated in marine clays. It is demonstrated that the normalized cone tip resistance, which is an indication of the soil’s undrained shear strength, leads to more realistic ε50 values compared with the laboratory-derived undrained shear strength parameter. In addition, the application of the soil-index properties and the over-burden pressure in the models, improves their estimation quality. Furthermore, the results of full-scale lateral pile load tests at different sites are used in order to validate the performance of the proposed models when it comes to predicting the behavior of the lateral piles. |
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| Keywords: | p-y curve, laterally loaded pile, piezocone penetration test, PCPT, marine clay, evolutionary polynomial regression, EPR, South Pars field |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2013 |
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| Number of pages: | str. 43-57 |
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| Numbering: | Letn. 10, št. 2 |
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| PID: | 20.500.12556/DKUM-70806  |
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| ISSN: | 1854-0171 |
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| UDC: | 624.041.6 |
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| ISSN on article: | 1854-0171 |
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| COBISS.SI-ID: | 277758464 |
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| NUK URN: | URN:SI:UM:DK:OILDVORB |
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| Copyright: | Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru |
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| Publication date in DKUM: | 14.06.2018 |
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| Views: | 1243 |
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| Downloads: | 101 |
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| Metadata: |    |
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| Categories: | Misc.
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