Geotechnical Earthquake Engineering and Soil Dynamics V
Volumetric Strains from Inverse Analysis of Pore Pressure Transducer Arrays in Centrifuge Models
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
Inverse analyses were used to evaluate the degree of partial drainage occurring during dynamic shaking of liquefying soil profiles in a set of centrifuge model tests. Three tests were performed using the 9-m radius centrifuge at the UC Davis Center for Geotechnical Modeling on saturated Ottawa sand models with initial relative densities of 25, 43, and 80%. Models were subjected to multiple sinusoidal shaking events with acceleration amplitudes ranging from 0.03 to 0.55 g. Densely spaced pore pressure transducer arrays provided profiles of pore pressure generation and dissipation; inverse analyses of the pore pressure data were used to obtain volumetric strain profiles during shaking and dissipation. Surface settlements computed by integrating the volumetric strain profiles are compared to surface settlements measured from linear potentiometers. The magnitude of the volumetric strains due to partial drainage and their potential effects on liquefaction responses are discussed.
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ACKNOWLEDGEMENTS
This material is based upon work supported by the National Science Foundation (NSF) under grants CMMI-1300518 and CMMI-1635398. Operation of the centrifuge facility at the University of California at Davis was supported as part of the Natural Hazards and Engineering Research Infrastructure (NHERI) network under NSF award CMMI- 1520581. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. The authors appreciate the assistance of the staff of the Center for Geotechnical Modeling at UC Davis.
REFERENCES
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 626 - 636
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:
- Analysis (by type)
- Centrifuge models
- Continuum mechanics
- Dynamic analysis
- Dynamic models
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Geotechnical models
- Material mechanics
- Materials engineering
- Models (by type)
- Pore pressure
- Pressure (type)
- Soil analysis
- Soil dynamics
- Soil mechanics
- Soil pressure
- Soil properties
- Solid mechanics
- Strain
Authors
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