THE SEISMIC BEHAVIOUR OF TUNNELS IN LIQUEFACTION SOIL: A NUMERICAL STUDY

Underground structures can be severely damaged during strong earthquakes. Potential damage to infrastructure due uplift increases in liquefied soils. Several models used simulate soil liquefaction. This study presents a new numerical method estimate the overall response of shallow-buried tunnels and interpret liquefaction mechanism saturated sand around structure under seismic action. The stems from energy-based concept that compute excess pore water pressure () turn it into external forces would cause underground structure. uses comparative implementing computer code, FLAC on performance using this approach procedure built-up evaluate structures' uplift. Moreover, proposed model is validated against well-documented laboratory data. Also, several parameters have been considered investigate behavior tunnels.