COUPLED ANALYSIS CONSIDERING DENSITY CHANGE OF UNSATURATED SOIL

Abstract

: In recent years, with the increase in sudden heavy rainfall, such as typhoons and guerrilla heavy rain, there are many reports of the collapse of soil structures on a global scale. People are suffering from the danger of soil structure disasters almost every year. This is partly due to the analysis of the factors leading to the collapse of soil structures and the fact that the mechanisms are not fully understood. In this study, the ground behavior of embankment and river embankment considering rainfall and rising water level were
examined using the air-dissolved unsaturated soil / water / air coupled finite analysis code. Therefore, in this study, in order to perform an analysis that takes into account the change in density, we proposed a new term “ " in the incremental balance equation and attempted to examine it. In addition, analysis was performed under the same conditions as the analysis code that did not consider the density change, and the effectiveness of the density change consideration was confirmed.