Stochastic Approach for 2D Superficial Seismic Amplification Based on Quad4M; City of L’Aquila (Italy) Test Case

Author:

Pasculli Antonio1ORCID,Sciarra Nicola2ORCID,Mangifesta Massimo1ORCID

Affiliation:

1. Department of Engineering and Geology (INGEO), University G. D’Annunzio Chieti-Pescara, 66100 Chieti, Italy

2. Department of Psychological, Health and Territory Sciences (DISPUTER), University G. D’Annunzio Chieti-Pescara, 66100 Chieti, Italy

Abstract

The values of the physical–mechanical properties of any soil are affected by uncertainties both due to experimental measurements and the impossibility of knowing them, in detail, at every point of the spatial domain. Accordingly, this work focuses on uncertainty in shear wave velocity (Vs) and its impact on the seismic response. The Monte Carlo method, based on pseudo-random number generation, was selected. To understand which random distributions could identify the site’s real conditions, the Fourier spectrum frequencies were calculated for each realization and were compared with the predominant natural site frequency. The experimental range data were used to calculate the spectral average acceleration and the horizontal amplification factors. The simulations were performed and interpreted by a modified version of VisualQ4M software based on 2D Quad4M, including the generation of pseudo-random numbers and pre- and post-data processing. A site at a small scale, in the territory of the city of L’Aquila (Italy), was selected as the test case. This paper demonstrates, from a numerical point of view, that both a simple local topographic modification due to excavation and the uncertainties of the numerical values, even of the shear wave velocity alone, can have an important impact on the local seismic amplification.

Funder

Agreement between Civil Defense Abruzzo Region and Disputer Department

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Reference40 articles.

1. Sanò, T., and Pugliese, A. (1999, January 17). Parametric study on topographic effects in seismic soil amplification. Proceedings of the Second International Symposium on Earthquake Resistant Engineering Structure, ERES 99, Catania, Italy.

2. Stochastic approach to study the site response in presence of shear wave velocity inversion: Application to seismic microzonation studies in Italy;Fabozzi;Eng. Geol.,2020

3. Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc.

4. Incorporating results from seismic microzonation into probabilistic seismic hazard analysis: An example in western Liguria (Italy);Barani;Eng. Geol.,2020

5. Mapping dispersion misfit and uncertainty in Vs profiles to variability in site response estimates;Griffiths;J. Geotech. Geoenviron. Eng.,2016

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