PSI - Issue 78

Atilla Ansal et al. / Procedia Structural Integrity 78 (2026) 2133–2140

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5. Conclusions An attempt was made to develop and improve the probabilistic approach for site response analyses and microzonation to obtain a more reliable approach for predetermined level of exceedance. In the case of site response, the number of input motions, and the number of soil profiles are increased using Monte Carlo simulation technique. The 1Dsite response analysis used was modified accounting stress and frequency dependence of the modulus degradation and damping ratio to have better modeling capabilities. Even though preliminary findings indicate that 2D and 3D site response analyses would yield more accurate site response results, it is still ongoing research to understand their effects on microzonation results. References Alvarez, L., García, J., Vaccari, F., Panza, G. F., González, B., Reyes, C., Fernández, B., Pico, R., Zapata, J. A., Arango, E. (2004). Ground motion zoning of Santiago de Cuba: an approach by SH waves modelling. In G. F. Panza, I. Paskaleva, & C. 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