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The behavior of clay soil under the effect of cyclic loading

Dr. Ahmad J. Dabdab

Abstract


The behavior of soil appropriate to earthquake and maritime problems may studied by performing alternating cyclic simple  shear and  triaxial  tests. The main purpose of this present research, is  to evaluate the strength reduction of saturated untrained   clay soils under direct shear cyclic stress. The test results revealed that such reduction exists and it increased with increasing cyclic stress amplitude , confining pressure  , the number of loading cycles and with decreasing sample thickness . The results indicate that there is a lower limit to the cyclic stress ratio below which cyclic loading has a negligible effect on clay softening . It is observed also that the direct cyclic strength is greater than the Triaxial cyclic strength which conforms with the published results 


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References


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