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Dynamic Soil Properties for Seismic Ground Response Studies in Northeastern India

Dammala, PK, Adapa, MK, Bhattacharya, Subhamoy, Nikitas, Georgios and Rouholamin, M (2017) Dynamic Soil Properties for Seismic Ground Response Studies in Northeastern India Soil Dynamics and Earthquake Engineering, 100. pp. 357-370.

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Stiffness and damping properties of soil are essential parameters for any dynamic soil structure interaction analysis. Often the required stiffness and damping properties are obtained from the empirical curves. This paper presents the stiffness and damping properties of two naturally occurring sandy soils collected from a river bed in a highly active seismic zone in the Himalayan belt. A series of resonant column tests are performed on the soil specimens with relative densities representative of the field and with varying confining pressures. The results are compared with the available empirical curves. Furthermore, a ground response analysis study is also carried out for a bridge site in the region using both empirical curves and experimentally obtained curves. It has been observed that the application of empirical modulus and damping curves in ground response prediction often leads to underestimation of the seismic demands on the structures.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Dammala, PK
Adapa, MK
Rouholamin, M
Date : September 2017
DOI : 10.1016/j.soildyn.2017.06.003
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Shear modulus; Damping ratio; Resonant Column; Hyperbolic model
Depositing User : Melanie Hughes
Date Deposited : 13 Jun 2017 10:13
Last Modified : 13 Mar 2019 16:12

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