Geotechnical Earthquake Engineering and Soil Dynamics V
Re-Evaluation of the Performance of the Upper San Fernando Dam: A Liquefaction-Induced Moderate Deformation Case History
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
Seismic performance of earthen dams subject to potential liquefaction hazard is of concern in both seismic risk assessment and design mitigation for dams. Seismic deformation analyses are increasingly utilized in evaluating and mitigating these hazards. It is important to assess different types of analytical approaches employed by means of their application to well-documented field case histories. The performance of the Upper San Fernando Dam during the 1971 San Fernando earthquake is a well-documented seismic performance field case history involving moderate deformations; a range of deformations of significant interest for both risk assessment and for engineered mitigation of such risks. The dam was in very close proximity to the fault rupture during the MW≈6.7 event, and it was strongly shaken. It sustained maximum horizontal displacements of approximately 2.7 m (9 feet) at the downstream toe, and 0.9 m (3 feet) of vertical crest loss. This case history was re-analyzed in these current studies by means of fully nonlinear seismic deformation analyses, using (1) a suite of four different analytical models, (2) a suite of three cyclic pore pressure generation models, and (3) a suite of three post-liquefaction residual strength relationships to assess the accuracy and reliability of these types of 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: 518 - 534
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:
- Business management
- Case studies
- Continuum mechanics
- Deformation (mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Geomechanics
- Geotechnical engineering
- Methodology (by type)
- Mitigation and remediation
- Model accuracy
- Models (by type)
- Practice and Profession
- Research methods (by type)
- Seismic design
- Seismic effects
- Seismic tests
- Soil liquefaction
- Soil mechanics
- Soil properties
- Solid mechanics
- Structural mechanics
- Tests (by type)
Authors
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