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Creep stress analysis of frozen soils under multiaxial states of stress
Abstract Creep behaviour of the so called Emscher-Marl is investigated in uniaxial compression tests under a temperature of −10°C. Similar to the results of creep tests published elsewhere, it is shown that the secondary creep controls the deformation. In cases of stationary creep the material behaves like a nonlinear elasto-viscous Maxwell fluid. Assuming no hydrostatic pressure effect, the power law applied to the uniaxial case can be transformed to multiaxial states of stress. For structures of frozen soil with a long-term deformation process Norton's power relationship between stress and rate of steady flow leads to reasonable results. As a numerical solution a finite-element computer program in connection with incremental procedure is developed for treatment of creep problems in groundfreezing technology. The calculation of a simply supported beam demonstrates the important influence of the high nonlinearity in stress and strain for frozen soils.
Creep stress analysis of frozen soils under multiaxial states of stress
Abstract Creep behaviour of the so called Emscher-Marl is investigated in uniaxial compression tests under a temperature of −10°C. Similar to the results of creep tests published elsewhere, it is shown that the secondary creep controls the deformation. In cases of stationary creep the material behaves like a nonlinear elasto-viscous Maxwell fluid. Assuming no hydrostatic pressure effect, the power law applied to the uniaxial case can be transformed to multiaxial states of stress. For structures of frozen soil with a long-term deformation process Norton's power relationship between stress and rate of steady flow leads to reasonable results. As a numerical solution a finite-element computer program in connection with incremental procedure is developed for treatment of creep problems in groundfreezing technology. The calculation of a simply supported beam demonstrates the important influence of the high nonlinearity in stress and strain for frozen soils.
Creep stress analysis of frozen soils under multiaxial states of stress
Klein, Joachim (author) / Jessberger, Hans Ludwig (author)
Engineering Geology ; 13 ; 353-365
1976-06-15
13 pages
Article (Journal)
Electronic Resource
English
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