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Long-term variations of force and strain in a steep geogrid -reinforced soil slope
Instrumentation was used to measure soil temperature and, independently, the force and strain in a steep geogrid-reinforced soil slope. The monitoring period extends to 10 years after construction. A nonlinear increase of force occurs with time that is described by a hyperbolic representation. The elapsed time to achieve force equilibrium was approximately 2.5 x 104 hours (approximately three years). The time- dependent increase of reinforcement force is attributed to deformation of the structure resulting from creep of the backfill sand. Strain in the reinforcement exhibits a complex variation with time. The long-term variation of strain is attributed primarily to: (i) the nonlinear increase of force; and (ii) creep of the geogrid reinforcement. Seasonal temperature fluctuations in the backfill sand may induce additional variations in strain.
Long-term variations of force and strain in a steep geogrid -reinforced soil slope
Instrumentation was used to measure soil temperature and, independently, the force and strain in a steep geogrid-reinforced soil slope. The monitoring period extends to 10 years after construction. A nonlinear increase of force occurs with time that is described by a hyperbolic representation. The elapsed time to achieve force equilibrium was approximately 2.5 x 104 hours (approximately three years). The time- dependent increase of reinforcement force is attributed to deformation of the structure resulting from creep of the backfill sand. Strain in the reinforcement exhibits a complex variation with time. The long-term variation of strain is attributed primarily to: (i) the nonlinear increase of force; and (ii) creep of the geogrid reinforcement. Seasonal temperature fluctuations in the backfill sand may induce additional variations in strain.
Long-term variations of force and strain in a steep geogrid -reinforced soil slope
Fannin, R.J. (author)
Geosynthetics International ; 8 ; 81-96
2001
16 Seiten, 27 Quellen
Article (Journal)
English
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