Location
San Diego, California
Presentation Date
29 Mar 2001, 7:30 pm - 9:30 pm
Abstract
A review of the Upper and Lower San Fernando dams during the 1971 San Fernando earthquake is presented in light of current understanding of post-liquefaction behaviour. The concepts of liquefaction, limited liquefaction, cyclic mobility, partial drainage, water filming, and mixing are discussed in relation to these dams. Blowcount data is reviewed and the critical zones of hydraulic fill within each dam are found to have comparable values of N1/3-cs. Limit equilibrium and finite difference stress/ deformation analyses support a minimum post-earthquake strength for the dams of approximately 14 to 24 kPa (300 to 500 psf). The importance of partially-drained behaviour to post-liquefaction response is stressed.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Beaty, Michael H. and Byme, Peter M., "Observations on the San Fernando Dams" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 22.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session04/22
Included in
Observations on the San Fernando Dams
San Diego, California
A review of the Upper and Lower San Fernando dams during the 1971 San Fernando earthquake is presented in light of current understanding of post-liquefaction behaviour. The concepts of liquefaction, limited liquefaction, cyclic mobility, partial drainage, water filming, and mixing are discussed in relation to these dams. Blowcount data is reviewed and the critical zones of hydraulic fill within each dam are found to have comparable values of N1/3-cs. Limit equilibrium and finite difference stress/ deformation analyses support a minimum post-earthquake strength for the dams of approximately 14 to 24 kPa (300 to 500 psf). The importance of partially-drained behaviour to post-liquefaction response is stressed.
