Prediction methods of liquefaction phenomenon and mitigation strategies

Abstract

The main objective of this research is to present a review about methods of analysis and mitigation in soil liquefaction, especially in those of sandy and loose density soils. The experience of different researchers shows that the most suitable methods of analysis are those that are based on”in situ” tests data while preserving the soil properties, especially those based on the use of SPT (Standard Penetration Test) because of the greatest existing data. Likewise, the most suitable mitigation methods is using gravel drains due to several advantages that improve liquation resistance, increasing the densification of soil, improving the drainage (quickly dissipates the interstitial pressures in an earthquake) and reduces cyclical tangential stress (which contributes to liquefaction) due to flexibility of the gravel pack.