Variation of Shear Strength of Cohesive Soils Subjected to Cyclic Loading at Different Rates of Loading

Abstract

There is a dearth of research on the cyclic vertical loading problem for cohesive soil, with the majority of studies conducted in commercial settings. The purpose of this work is to investigate the experimental effects of vertical cyclic compression stress on the undrained shear strength of clayey soil. To investigate the undrained shear strength of clays beneath shallow footings under cyclic loads at various rates, thirty-nine models have been put to the test. A brand-new compression device was produced with the ability to apply both cyclic and monotonic loading. Two footing shapes, three depths of foundation embedment, three undrained shear strengths, and three loading rates were tested. It was determined that following the cyclic load test, the soil's undrained shear strength increased in value. At the start of the test, there was a sharp rise in settlement. This indicates that in all models, the threshold stain is extremely tiny in the zones of cyclic amplitudes.