Geotechnical Earthquake Engineering and Soil Dynamics V
Simplified Evaluation of the Seismic Failure of an Old Wharf during the 2014 Mw 8.2 Pisagua, Chile, Earthquake
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
The seismic failure of an old quay wall, built in 1932, located in the Port of Iquique during the Mw 8.2 April 1, 2014, Pisagua, Chile, earthquake is studied. A geotechnical exploration, including boreholes, CPT soundings, and surface-based geophysical techniques, was performed to characterize the materials forming the wharf. The data and field observations are then analyzed and used to develop a geotechnical model of two cross-sections modeled in Plaxis2D, to conclude which is the most likely failure mechanism under a dynamic analysis. The results are compared against the deformations measured in a number cross sections of the wharf, suggesting that the failure can be explained by a combined effect of the dynamic increase in lateral earth pressures and the base rotation of the confining walls due to the lack of proper compaction of the rockfill prism below the confining walls.
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ACKNOWLEDGMENTS
This research was partially funded by a grant from the National Research Center for Integrated Natural Disaster Management CONICYT/FONDAP/15110017. The authors would like to thank MSc. Sebastian Boldrini for providing very valuable information for this study. Also, the authors thank ConeTec, Inc. for providing their CPT services free of charge, and to Golder Associates for providing funds and work time for the main author, making this research possible.
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Information & Authors
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Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 591 - 604
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)
- Business management
- Developing countries
- Earthquake engineering
- Earthquakes
- Engineering fundamentals
- Failure analysis
- Forensic engineering
- Geohazards
- Geotechnical engineering
- Hydraulic engineering
- Hydraulic structures
- Ports and harbors
- Practice and Profession
- Seismic effects
- Seismic tests
- Structural engineering
- Structural failures
- Structural members
- Structural systems
- Tests (by type)
- Walls
- Water and water resources
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