Simulation of torsional shear test results with neuro-fuzzy control system |
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Authors: | S. Altun,A.B. Gö ktepe,A.M. Ansal,C. Akgü ner |
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Affiliation: | 1. Department of Civil Engineering, Ege University, 35100 Bornova, Izmir, Turkey;2. Kolin Const. Co., Akköy Dam and HEPP Const, Kürtün, Gümü?hane, Turkey;3. Kandilli Observatory and Earthquake Research Institute, Bo?azici University, Istanbul, Turkey;4. Department of Civil Engineering, Y?ld?z Technical University, 34349, Y?ld?z, Istanbul, Turkey |
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Abstract: | In the first part of this study, a series of stress-controlled hollow cylinder cyclic torsional triaxial shear tests were conducted on loose to medium dense saturated samples of clean Toyoura sand to investigate its liquefaction behavior. A uniform cyclic sinusoidal loading at a 0.1 Hz frequency was applied to air-pluviated samples where confining pressure and relative density was varied. Cyclic shear stress–strain changes, the number of cycles to reach liquefaction and pore pressure variations were recorded. Results indicate that the liquefaction resistances of uniform sands are significantly affected by the method of sample preparation and initial conditions. |
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Keywords: | Cyclic test Sand Liquefaction Neuro-fuzzy system Hybrid learning algorithm |
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