Geotechnical Earthquake Engineering and Soil Dynamics V
Influence of Strong Motion Records Characteristics on Numerical Simulations of Soil Liquefaction
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
The selection of the appropriate input motion plays a crucial role in advanced numerical simulations of cyclic liquefaction. In the present paper, a numerical model validated against the evidence of soil liquefaction phenomena observed during the Emilia 2012 earthquake in Italy is used to assess the influence of the ground motion selection process. The numerical model has been developed using the finite element code OpenSees and adopting the pressure dependent elasto-plastic multi-yield constitutive model for the liquefiable layers. The model has been first calibrated by using laboratory and in situ tests from the San Carlo site. Then a large set of strong motion records has been used and results have been classified based on liquefaction occurrence. The most influent parameters for design purposes have been identified through a cluster analysis. The results underline that the selection criterion should be based on the estimation of expected ground motion parameters rather than on a pure spectral matching criterion.
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AKNOWLEDGEMENTS
This study has been supported by the ReLUIS project 2014–2018 sponsored by the Italian Civil Protection. The Authors thank Riccardo Boggini and Giuseppe Cannistraci for the help with numerical analyses.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 311 - 320
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Field tests
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Ground motion
- Mathematics
- Methodology (by type)
- Models (by type)
- Motion (dynamics)
- Numerical models
- Parameters (statistics)
- Research methods (by type)
- Soil liquefaction
- Soil mechanics
- Soil properties
- Solid mechanics
- Statistics
- Tests (by type)
- Validation
Authors
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