Abstract
Cyclic soil behavior plays an important role in geotechnical engineering, both in the installation phase as over the life span of constructions. Relevant application examples which find increasing attention nowadays are the dimensioning of on- and offshore foundation systems, the analysis of soil behavior due to mechanized tunneling processes as well as analyses of loading histories related to deep excavation walls. Thus, in the present paper fundamentals of cyclic soil behavior under partially drained, oedometric conditions are analyzed. Excess pore water pressure evolution and accumulated deformations are studied by both numerical and experimental approach. For this purpose, a new oedometer device is introduced which allows to measure complete stress state under transient loading. Additionally, by numerical experiments using FEM the influence of soil stiffness and permeability on the evolution of excess pore water pressures and accumulated deformations is studied. By comparison of numerical and laboratory experiments the ability of classical isotropic hardening plasticity to model cyclic consolidation phenomena is validated.
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Acknowledgments
The second author acknowledges financial support provided by the German Science Foundation (DFG) in the framework of the Collaborative Research Center SFB 837 (subproject A5).
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Müthing, N., Barciaga, T., Schanz, T. (2016). On the Use of Isotropic Hardening Plasticity to Model Cyclic Consolidation of Fine Grained Soils. In: Triantafyllidis, T. (eds) Holistic Simulation of Geotechnical Installation Processes. Lecture Notes in Applied and Computational Mechanics, vol 80. Springer, Cham. https://doi.org/10.1007/978-3-319-23159-4_7
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DOI: https://doi.org/10.1007/978-3-319-23159-4_7
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