Comparison of Several Discrimination Criteria for Seismic Soil Liquefaction

Seismic soil liquefaction potential evaluation is an important part in seismic geological disasters assessment.Different methods of seismic soil liquefaction potential evaluation lead to different conclusions.Several main methods are sorted out.Through specific engineering test data,evaluations are applied based on these methods,including standard penetration test method,NCEER method,static cone penetration test method and shear wave velocity method,and the conclusions of various methods are analyzed.It is concluded that there are obvious defects in liquefaction potential evaluation applied by shear wave velocity method.For the shallow silt,it is more risky with this method,and for the deep sand,it is too conservative.The results of the other methods,including standard penetration test method,NCEER method and static cone penetration test method,are basically consistent.However,there are obvious differences between the NCEER method and other methods for sandy soil with high content of fine grains.