ABSTRACT
Soil liquefaction is an important issue in geotechnical engineering that would cause damages as a result of bearing loss, lateral spreading, or even flowsliding in a mildly sloping ground. Mitigation of excess pore pressure generation and lateral deformation thus become major concerns for liquefiable deposits. This paper examines three commonly adopted mitigation measures (stone-column/SC, micro-pile/MP, and densification/DS) on their effectiveness in reducing the influences of soil liquefaction. A numerical tool is employed and a real soil deposit of liquefaction concern is assumed for the assessment. In this study, we investigate the improvements for each of the mitigation measures, with their usual ranges of design specifications, on liquefaction phenomena of the original deposit. The study indicates both SC and DS options could effectively reduce the generation of excess pore pressure in soil. However, in reducing the lateral deformation of sloping ground, MP option would be superior than the other two options.
