Abstract
Ground response analysis for a specific site plays an important role in designing earthquake-resistant structures as several conditions at the surface may occur due to the amplification of rock/hard layers at the bed level. In this study, 1D EQL ground response investigation has been conducted for sites of Ludhiana city using DEEPSOIL software. The analysis has been carried out by considering Sikkim 2011 and Uttarkashi 1999 earthquake. Geotechnical data have been collected from various organizations and Shear wave velocity estimated using already available correlation between SPT-N value and Vs. The sites were characterized on the basis of average SPT ‘N’ values as per the recommendations of National Earthquake Hazards Reduction Program (NEHRP). The peak ground acceleration for different sites has been calculated and found to vary between 0.173 and 0.254 g. It has been observed that sites of Ludhiana can amplify due to which site-specific seismic ground motion analysis should be adopted for RCC structures having high important value.
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