Liquefaction potential analysis in Yogyakarta – Bawen Toll Road section 3

The Yogyakarta – Bawen Toll Road construction is one of the National Strategic Projects because it passes through four regencies in Central Java Province and Special District Yogyakarta. As general consideration for infrastructure planning, was required to consider preventing damages due natural disasters, including liquefaction caused by an earthquake. study area has a shallow groundwater table (<10 m), earthquakes often occurred. Geological conditions showed that lithologies Section 3 dominated silty sand, sandy silt, gravel. This aimed analyze potential 3, especially STA 44+600 52+800. analysis calculated using Simplified Procedure Method based on Standard Penetration Test data. Furthermore, Liquefaction Potential Index (LPI) applied determine level potential. most central part indicated no On contrary, northern southern parts are have potentials ranging from high very high. According results, recommended mitigation plan against study.