Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice
The effects induced by the choice of numerical base conditions for evaluating local seismic response are investigated in this technical note, aiming to provide guidelines for professional applications. A numerical modelling of the seismic site response is presented, assuming a one-dimensional scheme...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | GeoHazards |
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| Online Access: | https://www.mdpi.com/2624-795X/2/4/24 |
| _version_ | 1797504190999691264 |
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| author | Gaetano Falcone Giuseppe Naso Federico Mori Amerigo Mendicelli Gianluca Acunzo Edoardo Peronace Massimiliano Moscatelli |
| author_facet | Gaetano Falcone Giuseppe Naso Federico Mori Amerigo Mendicelli Gianluca Acunzo Edoardo Peronace Massimiliano Moscatelli |
| author_sort | Gaetano Falcone |
| collection | DOAJ |
| description | The effects induced by the choice of numerical base conditions for evaluating local seismic response are investigated in this technical note, aiming to provide guidelines for professional applications. A numerical modelling of the seismic site response is presented, assuming a one-dimensional scheme. At first, with reference to the case of a homogeneous soil layer overlying a half-space, two different types of numerical base conditions, named <i>rigid</i> and <i>elastic</i>, were adopted to analyse the seismic site response. Then, geological setting, physical and mechanical properties were selected from Italian case studies. In detail, the following stratigraphic successions were considered: shallow layer 1 (shear wave velocity, V<sub>S</sub>, equal to 400 m/s), layer 2 (V<sub>S</sub> equal to 600 m/s) and layer 3 (V<sub>S</sub> equal to 800 m/s). In addition, real signals were retrieved from the web site of the Italian accelerometric strong motion network. <i>Rigid</i> and <i>elastic</i> base conditions were adopted to estimate the ground motion modifications of the reference signals. The results are presented in terms of amplification factors (i.e., ratio of integral quantities referred to free-field and reference response spectra) and are compared between the adopted numerical models. |
| first_indexed | 2024-03-10T04:01:09Z |
| format | Article |
| id | doaj.art-1cd5d8e5bddf4c9bb98a47551c063b92 |
| institution | Directory Open Access Journal |
| issn | 2624-795X |
| language | English |
| last_indexed | 2024-03-10T04:01:09Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | GeoHazards |
| spelling | doaj.art-1cd5d8e5bddf4c9bb98a47551c063b922023-11-23T08:32:04ZengMDPI AGGeoHazards2624-795X2021-12-012443044110.3390/geohazards2040024Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best PracticeGaetano Falcone0Giuseppe Naso1Federico Mori2Amerigo Mendicelli3Gianluca Acunzo4Edoardo Peronace5Massimiliano Moscatelli6CNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyPresidenza del Consiglio dei Ministri—Dipartimento della Protezione Civile (DPC), via Vitorchiano 2, 00189 Roma, ItalyCNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyCNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyCNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyCNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyCNR-IGAG, Istituto di Geologia Ambientale e Geoingegneria, Area della Ricerca di Roma 1, via Salaria km 29,300, Monterotondo Stazione, 00015 Roma, ItalyThe effects induced by the choice of numerical base conditions for evaluating local seismic response are investigated in this technical note, aiming to provide guidelines for professional applications. A numerical modelling of the seismic site response is presented, assuming a one-dimensional scheme. At first, with reference to the case of a homogeneous soil layer overlying a half-space, two different types of numerical base conditions, named <i>rigid</i> and <i>elastic</i>, were adopted to analyse the seismic site response. Then, geological setting, physical and mechanical properties were selected from Italian case studies. In detail, the following stratigraphic successions were considered: shallow layer 1 (shear wave velocity, V<sub>S</sub>, equal to 400 m/s), layer 2 (V<sub>S</sub> equal to 600 m/s) and layer 3 (V<sub>S</sub> equal to 800 m/s). In addition, real signals were retrieved from the web site of the Italian accelerometric strong motion network. <i>Rigid</i> and <i>elastic</i> base conditions were adopted to estimate the ground motion modifications of the reference signals. The results are presented in terms of amplification factors (i.e., ratio of integral quantities referred to free-field and reference response spectra) and are compared between the adopted numerical models.https://www.mdpi.com/2624-795X/2/4/24numerical seismic basenumerical input motionamplification factorssite effectsearthquake engineering |
| spellingShingle | Gaetano Falcone Giuseppe Naso Federico Mori Amerigo Mendicelli Gianluca Acunzo Edoardo Peronace Massimiliano Moscatelli Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice GeoHazards numerical seismic base numerical input motion amplification factors site effects earthquake engineering |
| title | Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice |
| title_full | Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice |
| title_fullStr | Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice |
| title_full_unstemmed | Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice |
| title_short | Effect of Base Conditions in One-Dimensional Numerical Simulation of Seismic Site Response: A Technical Note for Best Practice |
| title_sort | effect of base conditions in one dimensional numerical simulation of seismic site response a technical note for best practice |
| topic | numerical seismic base numerical input motion amplification factors site effects earthquake engineering |
| url | https://www.mdpi.com/2624-795X/2/4/24 |
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