Earthquake Liquefaction of Loess Site

Through the sinusoid loading dynamic triaxial test, the liquefaction property of saturated loess and sand selected from a civilian airport of Lanzhou, Gansu are examined. Based on the laboratory results, a comprehensive assessment on the earthquake liquefaction potential of the loess and sand is given using the liquefaction resistance shear stress method,ground motion evaluation obtained from seismic hazard assessment and one-dimensional FEM analysis. It is found that under the effect of ground motion with exceedance probability of 10% within 50 years, the loess in study is more susceptible to liquefaction than the sand.