Journal
ACTA GEOTECHNICA
Volume 11, Issue 4, Pages 763-774Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11440-015-0412-x
Keywords
Combined monotonic and cyclic loading; Cyclic triaxial tests; Database; Fine sand; Isotropic compression tests; Oedometric compression tests; Strain cycles; Un- and reloading cycles
Categories
Funding
- German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) [0327618]
- German Research Council (DFG) [TR218/18-1 / WI3180/3-1]
- BMU
- DFG
Ask authors/readers for more resources
For numerical studies of geotechnical structures under earthquake loading, aiming to examine a possible failure due to liquefaction, using a sophisticated constitutive model for the soil is indispensable. Such model must adequately describe the material response to a cyclic loading under constant volume (undrained) conditions, amongst others the relaxation of effective stress (pore pressure accumulation) or the effective stress loops repeatedly passed through after a sufficiently large number of cycles (cyclic mobility, stress attractors). The soil behaviour under undrained cyclic loading is manifold, depending on the initial conditions (e.g. density, fabric, effective mean pressure, stress ratio) and the load characteristics (e.g. amplitude of the cycles, application of stress or strain cycles). In order to develop, calibrate and verify a constitutive model with focus to undrained cyclic loading, the data from high-quality laboratory tests comprising a variety of initial conditions and load characteristics are necessary. It is the purpose of these two companion papers to provide such database collected for a fine sand. Part II concentrates on the undrained triaxial tests with strain cycles, where a large range of strain amplitudes has been studied. Furthermore, oedometric and isotropic compression tests as well as drained triaxial tests with un- and reloading cycles are discussed. A combined monotonic and cyclic loading has been also studied in undrained triaxial tests. All test data presented herein will be available from the homepage of the first author. As an example of the examination of an existing constitutive model, the experimental data are compared to element test simulations using hypoplasticity with intergranular strain.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available