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The paper presents a constitutive modelling of the London clay based on the detailed laboratory knowledge gathered about London clay structure (Hight et al, 2007; Gasparre et al, 2007; Gasparre & Coop, 2008). Modelling was performed using a structured kinematic hardening soil model based on Rouainia & Wood (2000). It was found that a smooth elasto-plastic transition was required to avoid a spurious stiffness degradation response. Consequently, the initial model was modified following a procedure similar to that suggested by Grammatikopoulou et al. (2006). Parameters associated with soil structure and state variables for each lithological sub-unit of the London clay are presented. A good prediction of stress-strain, strength and stiffness behaviour in the small strain range is obtained in spite of the complex behaviour observed in laboratory. The significantly different mechanical behaviours
of the lithological sub-units, arising from differences in structure, are adequately reproduced.
CitationGonzález, N.A. [et al.]. Modelling the behaviour of structured London Clay. A: International Symposium on Deformation Characteristics of Geomaterials. "Deformation caracteristics of geomaterials: part 2: poceedings of the Fifth international symposium on deformation dharacterlstics of geomaterials, Seoul 2011, 1-3 September 2011, Seoul, Korea". Seoul: Hanrimwon, 2011, p. 1052-1059.
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