User:Salinitha K Nair

A soil deposit being susceptible to liquefaction doesnot mean that liquefaction would occur during an earthquake. Its occurance requires a disturbance that is strong enough to trigger it. Evaluation of the nature of this disturbance is therefore very critical. There are various methods to evaluate the nature of disturbance that will trigger liquefaction during an earthquake. They are
 * Cyclic stress Approach
 * Cyclic strain approach
 * Energy Dissipation approach
 * Effective stress based Response analysis Approach
 * Probabilistic Approach

Cyclic Strain Approach Introduction Cyclic strain approach is used as an alternative to cyclic stress approach. The basic concept behind both these approaches is the comparison of earthquake loading with liquefaction resistance of the soil. In cyclic strain approach both earthquake loading and liquefaction resistance is expressed in terms of cyclic shear strains while in cyclic stress approach they are both expressed in terms of cyclic shear stresses.