Liquefaction potential and severity analysis on road embankment in Serang-Panimbang Toll Road Section 3

Abstract

The Serang-Panimbang Toll Road is one of the national strategic projects. The project location is in proximity to several seismic activity zones, including the Son of Mount Krakatoa, Labuhan Fault, Ujung Kulon Faults, and Sunda Megathrust. A liquefaction analysis is essential to identify areas with high liquefaction potential and to evaluate the embankment road’s ability to withstand liquefaction events. This analysis is conducted using the Simplified Method based on borehole data. Subsequently, the Liquefaction Potential Index (LPI) and Liquefaction Severity Index (LSI) are employed to determine the potential level and severity of liquefaction. The analysis results indicate that the section from STA 59+950 to 60+750 exhibits high to very high LPI values but only low to moderate LSI values. Further evaluation of the road embankment’s stability under liquefaction conditions is necessary to ensure the Serang-Panimbang toll road network remains operational during significant seismic events.