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Nonlinear Numerical Simulation of the Soil Seismic Response to the 2012 Mw 5.9 Emilia Earthquake Considering the Variability of the Water Table Position

2019; Seismological Society of America; Volume: 109; Issue: 2 Linguagem: Inglês

10.1785/0120170345

1943-3573

Maria Paola Santisi d’Avila, Luca Lenti, Salvatore Martino, Roberto Romeo,

Geotechnical Engineering and Soil Mechanics

Research Article| February 19, 2019 Nonlinear Numerical Simulation of the Soil Seismic Response to the 2012 Mw 5.9 Emilia Earthquake Considering the Variability of the Water Table Position Maria Paola Santisi d'Avila; Maria Paola Santisi d'Avila aLaboratoire Jean Alexandre Dieudonné (LJAD), Université Côte d'Azur, 28 Avenue Valrose, 06108 Nice, France, msantisi@unice.fr Search for other works by this author on: GSW Google Scholar Luca Lenti; Luca Lenti bIFSTTAR, Université Paris Est, 14‐20 Boulevard Newton, 77447 Champs sur Marne, France, luca.lenti@ifsttar.fr Search for other works by this author on: GSW Google Scholar Salvatore Martino; Salvatore Martino cDipartimento di Scienze della Terra e Centro di Ricerca per i Rischi geologici (CERI), Università Roma "Sapienza", Piazzale Aldo Moro, 5, 00185 Rome, Italy, salvatore.martino@uniroma1.it Search for other works by this author on: GSW Google Scholar Roberto Walter Romeo Roberto Walter Romeo dLibera Università di Urbino Carlo Bo, Via Aurelio Saffi, 2, 61029 Urbino, Italy, roberto.romeo@uniurb.iteDeceased (2017). Search for other works by this author on: GSW Google Scholar Author and Article Information Maria Paola Santisi d'Avila aLaboratoire Jean Alexandre Dieudonné (LJAD), Université Côte d'Azur, 28 Avenue Valrose, 06108 Nice, France, msantisi@unice.fr Luca Lenti bIFSTTAR, Université Paris Est, 14‐20 Boulevard Newton, 77447 Champs sur Marne, France, luca.lenti@ifsttar.fr Salvatore Martino cDipartimento di Scienze della Terra e Centro di Ricerca per i Rischi geologici (CERI), Università Roma "Sapienza", Piazzale Aldo Moro, 5, 00185 Rome, Italy, salvatore.martino@uniroma1.it Roberto Walter Romeo dLibera Università di Urbino Carlo Bo, Via Aurelio Saffi, 2, 61029 Urbino, Italy, roberto.romeo@uniurb.iteDeceased (2017). Publisher: Seismological Society of America First Online: 19 Feb 2019 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2019) 109 (2): 505–524. https://doi.org/10.1785/0120170345 Article history First Online: 19 Feb 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Maria Paola Santisi d'Avila, Luca Lenti, Salvatore Martino, Roberto Walter Romeo; Nonlinear Numerical Simulation of the Soil Seismic Response to the 2012 Mw 5.9 Emilia Earthquake Considering the Variability of the Water Table Position. Bulletin of the Seismological Society of America 2019;; 109 (2): 505–524. doi: https://doi.org/10.1785/0120170345 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract This research is focused on the case study of San Carlo village (Emilia‐Romagna, Italy), struck by the 20 May 2012 Mw 5.9 Emilia earthquake that caused severe damage because of widely observed soil liquefaction. In particular, it investigates the influence on nonlinearity effects of the variability of the water table depth caused by seasonal fluctuation. The one‐directional propagation of a three‐component seismic wave (1D‐3C approach), in a multilayered soil profile, is simulated using a finite‐element model and an elastoplastic constitutive behavior with hardening for the soil (Iwan's model). The nonlinearity is described by the normalized shear modulus decay curve obtained by resonant column (RC) tests. The shear modulus is corrected during the process (Iai's model) to consider the cyclic mobility and dilatancy of sands, depending on the actual average effective stress and the friction and dilatancy angles obtained from cyclic consolidated undrained triaxial (CTX) tests. Profiles with depth of maximum excess pore water pressure, horizontal motion, and shear strain and stress are obtained in the case of effective stress analysis (ESA), for an average position of the water table depth and for a variation of ±1 m⁠, and then compared with a total stress analysis (TSA). The variability with the water table depth of soil profile response to seismic loading is observed also in terms of hysteresis loops, time histories of the ground motion, and excess pore water pressure in the liquefiable soil layers prone to the cyclic mobility process. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.