Geotechnical Earthquake Engineering and Soil Dynamics V
On NDA Practices for Evaluating Liquefaction Effects
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
This paper discusses three aspects of nonlinear dynamic analysis (NDA) practices that are important for evaluating the seismic performance of geotechnical structures affected by liquefaction or cyclic softening: (1) selection and calibration of constitutive models, (2) comparison of NDA results using two or more constitutive models, and (3) documentation. The ability of the selected constitutive models and calibration protocols to approximate the loading responses important to the system being analyzed is one of several technical factors affecting the quality of results from an NDA. Comparisons of single element simulations against empirical data for a broad range of loading conditions are essential for evaluating this factor. Critical comparisons of NDAs using two or more constitutive models are valuable for evaluating modeling uncertainty for specific systems and for identifying modeling limitations that need improvement. The utility of an NDA study depends on the documentation being sufficiently thorough to facilitate effective reviews, advance best practices, and support future reexaminations of a system’s seismic performance.
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ACKNOWLDGEMENTS
Portions of the work presented herein were supported by the National Science Foundation (grant CMMI-1635398) and California Department of Water Resources (contracts 4600009751 and 4600011395). Any opinions, findings, or recommendations expressed herein are those of the authors and do not necessarily reflect the views of these organizations. The opinions expressed in this paper draw from the practices of numerous colleagues whom the authors have been fortunate to work or interact with over many years. Professors I. M. Idriss and Jack Montgomery and Dr. Rambod Hadidi contributed to the present paper through discussions, comments, and sharing of data. The authors appreciate the above support and interactions.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 1 - 20
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:
- Calibration
- Comparative studies
- Constitutive relations
- Design (by type)
- Dynamic models
- Earthquake engineering
- Engineering fundamentals
- Geomechanics
- Geotechnical engineering
- Load factors
- Mathematics
- Measurement (by type)
- Methodology (by type)
- Models (by type)
- Research methods (by type)
- Seismic effects
- Seismic tests
- Soil liquefaction
- Soil mechanics
- Soil properties
- Structural design
- Tests (by type)
Authors
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