Collapse Potential of Loess under Unloading Effect

Collapsible loess is generally characterized by a sudden and substantial decrease in volume that occurs when applied under constant stress. To evaluate the collapse potential, self-weight coefficients have been defined code for building construction collapsible regions. However, method does not account vertical stress variation. The process commonly with variation practice. This paper documents low-cost, quantitative evaluation scheme using regression analysis to potential varying unloading levels. results show factors prominently deformation are initial pressure, ratio, completed-ratio. At collapse-completed remnant coefficient significantly decreases decreasing ratio; at increases ratio. Decreasing ratios decreased an pressure exceeds threshold value. Finally, calculation of was prepared analyze practical project problems based on test.