The Liquifaction Modeling to Analysis of Soil Structure Composition

Indonesia is a country that is prone to natural disasters, one of which is liquefaction. The earthquake that occurred in Palu City in 2018 was a tsunami, and the ground moved or also known as liquefaction. The purpose of this study is to analyze the results of modelling the liquefaction potential using a shaking table test tool based on the composition of the soil structure and based on the groundwater level. The type of research used is descriptive qualitative research with modelling using a table test tool. The soil samples used were beach sand and clay soil with dry soil conditions and diameter based on the results of sieve no. 20 with a hole diameter of 0.85 mm. The water volume used is 4 L, 4.5 L, and 5 L. The result of this research is sand soil which is water-saturated soil liquefaction occurs and based on the groundwater level shows sand soil whit a volume of 5L, which is assumed to be a shallow groundwater level experiencing greater and faster liquefaction. One of the factors that occur in a liquefaction area is a water-saturated which has a shallow groundwater level.