Analysis of Soil Liquefaction Potential in Puger Coastal Area, Jember Regency, East Java']Java Using CPT Data

The existence of which is traversed by world plate meeting brings Indonesia in earthquake prone area. One of the dangers that occur in earthquake is soil liquefaction. At the time of the earthquake occurs, the soil changes the nature of solid into liquid due to the received cyclic load. As a result, the non-cohesive soil will lose its power. The consequence of soil liquefaction is the decline of the building. Measurement of soil strength and identification of soil type can be done by using the Cone Penetration Test (CPT). In this study, CPT measurement was used to evaluate the liquefaction potential of Puger coastal area, Jember Regency. The potential of liquefaction is determined by obtaining the value of Cyclic Resistance Ratio (CRR), Cyclic Stress Ratio (CSR), Safe Factor (SF) and subsequently calculating ground settlement due to soil liquefaction. As for the results of measurements on 13 points, 7 points of them have the potential for soil liquefaction. From those points, the largest ground settlement is up to 3.24 cm, hence based on the degree of damage to buildings developed by Ishihara and Yosimine [1], the category is included as minor damage.