Soil creep behavior: laboratory testing and numerical modelling

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dc.contributor.advisorWong, Ronald C. K.
dc.contributor.authorWang, Zhechao
dc.date.accessioned2017-12-18T22:08:00Z
dc.date.available2017-12-18T22:08:00Z
dc.date.issued2010
dc.descriptionBibliography: p. 232-250en
dc.descriptionA few pages are in colour.en
dc.description.abstractSoil exhibits creep behavior, in which the deformation of soil develops with time at a state of constant effective stress. It is of significance to investigate the creep behavior of soil for geotechnical applications wherein the long-term deformation of soil is concerned. In this study, the aspects of laboratory testing and numerical modelling of soil creep were investigated. On laboratory testing aspect, a series of one-dimensional and triaxial compression creep tests were performed on clayey and sandy soils, including kaolinite, Ottawa sand, till and oil sands, to investigate the creep behavior of the soils under different conditions. The dependencies of creep rate on time, stress and inelastic strain were investigated in the creep tests. On numerical modelling aspect, several issues on modelling soil creep were investigated. It was concluded that the potential for plastic flow is also applicable to describe soil creep from experimental observations and mechanistic pictures. An elasticviscoplastic creep model for soil was proposed to describe soil creep under complex conditions. In the model, the creep rate of soil was formulated as a function of inelastic strain and effective stresses, following the way of Eulerian description of motion. Based on the proposed creep model, a methodology to accelerate creep test was developed. The energy aspect and examples of this methodology were presented as well. Moreover, numerical simulations were performed to investigate the influence of soil creep on the long-term ground settlements above a tunnel in till and on the time-dependent stress redistribution in oil sand due to cavity expansion.En
dc.format.extentxxxii, 335 leaves ; ill. ; 30 cm.en
dc.identifier.citationWang, Z. (2010). Soil creep behavior: laboratory testing and numerical modelling (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/3538en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/3538
dc.identifier.urihttp://hdl.handle.net/1880/104539
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.titleSoil creep behavior: laboratory testing and numerical modelling
dc.typedoctoral thesis
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 1976 627942819
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
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