Liquefaction potential assessment of saturated loess

Usually, soils with mainly fine grain-sized content, as loess, are considered to have low liquefaction potential. Regardless of this, many researchers analyzed and presented much field evidence that silty soil (in particular loess) occurred under certain conditions. In Bulgaria, the first loess river terrace (T1) within Danube River lowland areas is covered by plasticity a thickness 10–12 m. ?he groundwater level often located between 5 m 8 in depth so substantial part deposits saturated immersed. Meanwhile, region North Bulgaria influence Vrancea seismic zone Romania, which able generate strong earthquakes magnitudes M?7.0. The present paper aims assess potential ground profile representative T1 terraces so-called simplified procedure based on SPT, incorporated software code NovoLiq. safety factor against FSL estimated at respective depths one-dimensional model for free-field conditions varying peak accelerations amax. critical amax, possible according assumptions applied requirements National Annex Eurocode 8, has been established.