Location
St. Louis, Missouri
Presentation Date
14 Mar 1991, 2:00 pm - 3:30 pm
Abstract
Earth dams may experience reduction in shear strength due to seismically induced pore pressures. Such reduction may be large enough to result in large deformations and eventual loss of the reservoir. While the analysis of embankment dams subject to earthquake loading is a complicated process, it is required for evaluation of seismic stability. In particular, the possibility of liquefaction in older, hydraulically-filled or otherwise poorly compacted dams during earthquakes presents a threat that must be addressed. This paper compares two methods of calculating the peak dynamic shear stress (critical to liquefaction evaluation) that occurs in an embankment during an earthquake. The first method is a one-dimensional analysis, which is simple, rapid and inexpensive. The second method is a two-dimensional finite element analysis, which is complicated, long and expensive. Because it is more desirable to use the simpler one-dimensional analysis, the results from the two analyses were compared and indicated that for slopes up to 35° the stresses were comparable.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1991 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
Elton, D. J.; Shie, C. F.; and Hadj-Hamou, T., "One- and Two-Dimensional Analysis of Earth Dams" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 20.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session07/20
Included in
One- and Two-Dimensional Analysis of Earth Dams
St. Louis, Missouri
Earth dams may experience reduction in shear strength due to seismically induced pore pressures. Such reduction may be large enough to result in large deformations and eventual loss of the reservoir. While the analysis of embankment dams subject to earthquake loading is a complicated process, it is required for evaluation of seismic stability. In particular, the possibility of liquefaction in older, hydraulically-filled or otherwise poorly compacted dams during earthquakes presents a threat that must be addressed. This paper compares two methods of calculating the peak dynamic shear stress (critical to liquefaction evaluation) that occurs in an embankment during an earthquake. The first method is a one-dimensional analysis, which is simple, rapid and inexpensive. The second method is a two-dimensional finite element analysis, which is complicated, long and expensive. Because it is more desirable to use the simpler one-dimensional analysis, the results from the two analyses were compared and indicated that for slopes up to 35° the stresses were comparable.
