Comparative Analysis of Different Liquefaction Evaluation Methods in the Xialiaohe River
At present,there are many methods for liquefaction evaluation,but the accuracy of some meth-ods is low.Based on the seismic liquefaction data of Haicheng,four representative liquefaction discrimina-tion methods are selected to compare the discriminant results with the seismic liquefaction data,by which the advantages and the disadvantages of various discriminant methods are concluded.The four methods can be divided into two categories:utilization specification and laboratory experiment.The results showed that the accuracy of standard method was 42.8%,the accuracy of the criterion method of adjusting parameters is 88%,the input sinusoidal method in laboratory experiment has an accuracy of 88%,the accuracy of seismic wave method in laboratory experiments is 77%.The advantage of the specification method is convenient and fast,but the disadvantage is that the accuracy of parameters provided by the specification is limited.The ad-vantage of laboratory experiment method is clear physical principle,but the disadvantage is that it needs to calculate seismic response of soil layer.It can be concluded that the accuracy of liquefaction determination can be effectively improved by using the standard method and adjusting the parameters.