Liquefaction Susceptibility of Silty Sands Based On Steady State Line Concept

Abstract

Earthquakes are occurring frequently all around the world and causing severe liquefactioninduced
damages of civil infrastructures supported on the foundation soil. Hence it is
required to analyse the susceptibility of liquefaction in foundation soils including sands, silts,
and low plastic clays. Based on the steady state line concept, it is possible to identify whether
the soil can be susceptible to liquefaction or not. The steady state line (SSL) can be developed
based on consolidated undrained triaxial compression testing data. The susceptibility of
static liquefaction can be expressed in terms of the contraction behaviour of soils. The SSL is
the boundary line which separates the liquefiable and non-liquefiable soil states. In this
study, SSL of silty sand is developed from undrained triaxial test simulations based on the
hypoplastic model.