Published Paper Details:

Liquefaction is associated with a host of related phenomenon. Liquefaction driven settlements in sands is such a phenomenon. Liquefaction susceptible areas are prone to such settlements. The densification of loose sand deposits when acted upon by seismic loading is a well-established fact. However, the matter becomes critical when the sand deposit is saturated and there is no chance of drainage. Due to this phenomenon, excess pore water pressure builds up during the earthquake loading, leading to loss of strength or liquefaction. Settlement occurs after the release of excess pore water pressure, leading to a reconsolidation phenomenon. However, the settlement induced depends upon a lot of factors, like length of the drainage path, gradation, etc. However, in the case of dry sands, the seismic settlement is induced under constant effective vertical stress. In both the cases, for dry as well as saturated, settlement of sand occurs due to cyclic loading. In this paper an attempt is made to calculate the settlement of sands in liquefaction susceptible areas of Guwahati city.