Abstract
Four borehole data from 4/1 Moore Avenue, Tollygunge, Kolkata, were collected to carry out ground response and liquefaction analysis. Two scaled input motions with peak bed rock acceleration (PBRA) 0.10 and 0.16 g have been generated from original Imperial Valley Earthquake accelerogram. The peak ground accelerations (PGA) obtained from ground response analysis using DEEPSOIL software have been used to determine the probable depth of liquefiable soil for Mw of 6.8. Ground response analysis shows amplification of PGA from 0.10 to 0.143 g and 0.16 to 0.208 g. Liquefaction analysis result shows that the bore holes analyzed are not susceptible to liquefaction as the liquefaction potential index (LPI) values come out to be 0.0 indicating very low risk for the region.
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