Geotechnical Earthquake Engineering and Soil Dynamics V
Optimization of Grid Spacing Pattern for the Development of Reference Parameter Maps for Liquefaction-Induced Free-Field Settlement
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
Performance-based earthquake engineering analysis methods are desirable in geotechnical engineering due to their ability to incorporate the various uncertainties associated with complex problems and their ability to frame responses in terms of a targeted hazard. However, such methods are difficult to implement on routine projects without the use of specialized software because the many iterative probabilistic calculations required. Prior research has introduced a simplified approach of using performance-based reference parameter maps in conjunction with correction equations that account for site-specific geotechnical and topographical conditions. This paper addresses the development of such performance-based reference parameter maps for the calculation of post-liquefaction volumetric strains and settlements in the free field. A study is performed and presented to assess the optimized grid spacing for a performance-based volumetric strain analysis and development of a strain performance-based reference parameter map. Recommended grid spacing values as correlated to USGS seismic hazard maps for PGA are provided to produce a maximum of 0.15% strain error in interpolating the reference strain for the simplified performance-based analysis approach.
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ACKNOWLEDGMENTS
Funding for this study was provided in part by a Federal Highway Administration Pooled Fund Study (Award No. TPF-5(296), with participation from Utah, Alaska, Connecticut, Idaho, Montana, Oregon, and South Carolina state departments of transportation). The authors gratefully acknowledge this support. The conclusions and opinion expressed in this paper do not necessarily reflect those of the sponsors.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 434 - 441
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:
- Engineering fundamentals
- Geohazards
- Geomatics
- Geomechanics
- Geotechnical engineering
- Grid systems
- Mapping
- Material mechanics
- Materials engineering
- Mathematics
- Methodology (by type)
- Models (by type)
- Optimization models
- Parameters (statistics)
- Soil liquefaction
- Soil mechanics
- Soil properties
- Spacing
- Statistics
- Strain
- Surveying methods
- Systems engineering
- Systems management
Authors
Metrics & Citations
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