Paper Contents
Abstract
Liquefaction takes place when loosely packed saturated granular soil near ground surface loose its strength in response to strong ground shaking. Such phenomenon leads to collapse of existing structures resulting in loss of lives and properties. Hence awareness regarding zone of liquefaction at a particular site is very important before highway design. With this in view a site at Sonarpur area of Kolkata, with sand deposit, has been identified for the present research. In the present study an attempt has been made to evaluate liquefaction potential of soil (at Sonarpur near Kolkata) firstly by SPT method. Evaluation of lique-faction resistance of soils, which is expressed in terms of cyclic resistance ratio (CRR) has been done with two DMT parame-ters, horizontal stress index (KD) and dilatometer modulus (ED), are then used as an index for assessing liquefaction resistance of soils. Specifically, CRRKD and CRRED boundary curves are established based on the data obtained from DMT tests. Further attempt has been made to study the assessment of liquefaction potential using Finite element software (Novo-LIQ) and compare the results obtained from above in-situ tests i.e, SPT and DMT tests. The paper highlights the site-specific liquefaction zone which may be considered for geotechnical design of foundation at the site.
Copyright
Copyright © 2025 Sandipan Saha. This is an open access article distributed under the Creative Commons Attribution License.
