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dc.contributor.authorSantos Rodríguez, Cristian de
dc.contributor.authorLedesma Villalba, Alberto
dc.contributor.authorGens Solé, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationde Santos, C., Ledesma, A., Gens, A. Backanalysis of preloading. A: International Conference on Soil Mechanics and Geotechnical Engineering. "19th ICSMGE: 19th International Conference on Soil Mechanics and Geotechnical Engineering: proceedings". Seoul: International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2017, p. 711-714.
dc.description.abstractThe paper presents the application of a backanalysis methodology to the inverse analysis of preloading soft clays. The methodology is based on an appropriate selection of the objective function and it uses a novel adaptive genetic algorithm approach to solve the resulting optimization problem. The methodology is applied first to a synthetic example followed by an application to an intensely instrumented preload test. The selected observations are the evolution along time of displacements and pore water pressures. The key parameters to be identified are those with major influence on the results: compressibility and permeability of the soil. It is shown that the confidence in parameter estimation varies significantly depending on the time at which the observations are considered and the type of them (displacements vs. pore water pressure). The possibility of extrapolating early results to later stages of the preloading is also explored. The usefulness of the method in engineering problems is demonstrated by the application to a preloading performed to improve the soft ground of the Water Treatment Plant located in the Llobregat delta near Barcelona.
dc.format.extent4 p.
dc.publisherInternational Society for Soil Mechanics and Geotechnical Engineering (ISSMGE)
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshClay soils--Analysis
dc.subject.otheradaptive genetic algorithm and preloading
dc.titleBackanalysis of preloading
dc.typeConference report
dc.subject.lemacSòls argilosos
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorde Santos, C.; Ledesma, A.; Gens, A.
local.citation.contributorInternational Conference on Soil Mechanics and Geotechnical Engineering
local.citation.publicationName19th ICSMGE: 19th International Conference on Soil Mechanics and Geotechnical Engineering: proceedings

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