Location
San Diego, California
Presentation Date
30 Mar 2001, 10:30 am - 12:30 pm
Abstract
This paper focuses on the seismic stability analysis of a hydraulic fill dam built in the mid-1920’s. The material properties of the dam were characterized using data from soil borings, standard penetration, cone penetration and shear wave velocity tests. An effective stress analysis approach was used for the analysis. A finite difference code, Fast Lagrangian Analysis of Continua (FLAG), provided static and dynamic shear stresses, excess pore water pressures, and deformations. The results obtained from the effective stress analyses are compared to the results of liquefaction potential analyses based on SPT and CPT data. For seismic excitation, a real acceleration-time history and a sinusoidal wave with the same peak ground acceleration are applied to the dam. In addition, constructing a berm to the downstream slope of the dam and increasing the freeboard by lowering the water level in the reservoir are modeled and analyzed as two different rehabilitation alternatives. The analysis revealed the following: 1) Limited liquefaction in the core of the dam would take place under the conditions modeled. 2) The dam would exhibit larger deformations under sinusoidal wave condition, as compared to the real acceleration - time history. 3) Both of the remediation techniques would significantly improve seismic stability of the dam.
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
Tezcan, Selami O.; Bhatia, Shobha K.; and Fiegle, Stefan, "Seismic Stability and Rehabilitation Analysis of a Hydraulic Fill Dam" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 29.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session05/29
Included in
Seismic Stability and Rehabilitation Analysis of a Hydraulic Fill Dam
San Diego, California
This paper focuses on the seismic stability analysis of a hydraulic fill dam built in the mid-1920’s. The material properties of the dam were characterized using data from soil borings, standard penetration, cone penetration and shear wave velocity tests. An effective stress analysis approach was used for the analysis. A finite difference code, Fast Lagrangian Analysis of Continua (FLAG), provided static and dynamic shear stresses, excess pore water pressures, and deformations. The results obtained from the effective stress analyses are compared to the results of liquefaction potential analyses based on SPT and CPT data. For seismic excitation, a real acceleration-time history and a sinusoidal wave with the same peak ground acceleration are applied to the dam. In addition, constructing a berm to the downstream slope of the dam and increasing the freeboard by lowering the water level in the reservoir are modeled and analyzed as two different rehabilitation alternatives. The analysis revealed the following: 1) Limited liquefaction in the core of the dam would take place under the conditions modeled. 2) The dam would exhibit larger deformations under sinusoidal wave condition, as compared to the real acceleration - time history. 3) Both of the remediation techniques would significantly improve seismic stability of the dam.
