Comparative Study of Seismic Ground Responses Using DEEPSOIL, SHAKE, and D-MOD for Soils of Goa, India

Abstract

Seismic Ground Response Analysis (GRA) is carried out to quantify the effects of the local soil strata overlying the bedrock on the characteristics of the bedrock motion. In the present study, the variability in the seismic ground response is studied for various input parameters such as soil geometry, use of different shear modulus and damping curves and methods of analysis by using three software, viz. DEEPSOIL, SHAKE and D-MOD. The study is carried out for typical soil site located at Goa, India. Considerable differences are found in the output parameters, such as, amplification ratio, surface acceleration, peak spectral acceleration and the frequency content of the response spectrum using various input parameters. It is found that the soil model defined with more number of layers gives a better estimate of the ground response. The mean spectral values obtained by equivalent linear analysis are found to be higher than that of the non linear analysis. Non-linear ground response analysis is recommended as it represents the actual non-linear soil behavior and the software considered allow for its easy adoption.

Soil Classification and Seismic Site Response Analysis for Some Areas in Hanoi City

“…Up to now, there has been a lot of programs to help us to analyze the response of ground motion, for example Shake 91, DeepSoil, Shake 2000, Strata or ShakeVT [14][15][16]. However, we have chosen DeepSoil to analyse.…”

Seismic Response of Monolithic and Precast RC Building for Site-Specific Conditions

“…To overcome this issue, several researchers have performed ground response analysis individually for the different cities across India and estimated the site amplification factors, response spectra, site coefficients, etc. Some of them include works by Ranjan [3] for Dehradun; Mahajan et al [4] for Dehradun; Govindaraju and Bhattacharya [5] for Kolkata; Paul and Dey [6] for Silchar; Boominathan et al [7] for Chennai; Sitharam and Anbazhagan [8] for Bangalore; Raghukanth et al [9] for Guwahati; Phanikanth et al [10] for Mumbai; Chandrasekaran et al [11] for Coimbatore; Shukla and Choudhury [12] for Gujarat ports; Jain and Gupta [13] for Delhi, Dehradun, Kakrapar and Kalpakkam; Jishnu et al [14] for Kanpur; Sitharam et al [15] for lucknow; Mandal et al [16] for Greater Delhi region; Kumar et al [17] for Guwahati; Naik and Choudhury [18] for Goa; Desai and Choudhury [19] for important sites of Mumbai; Elayaraja et al [20] for Coonoor and Ooty; Pandey et al [21] for Uttarakhand; Chatterjee and Choudhury [22] for Kolkata; Chatterjee [23] for Kolkata and many more. Further, Bajaj and Anbazhagan [24] proposed site amplification factors and response spectra for Southern India based on the nonlinear ground response analysis.…”