Location
Chicago, Illinois
Date
02 May 2013, 4:00 pm - 6:00 pm
Abstract
Dam-foundation interaction plays an important role in the design and analysis of concrete gravity dams as has been reviewed from the failures of dams in the literature. The objective of the study is to understand the behavior of a concrete gravity dam taking into account the effect of dam and foundation discontinuities using three-dimensional Distinct Element Code. Different models have been formulated considering the complexities involved in the modeling of the dam structure, dam-foundation system and the results have been compared. Modeling the dam with the discontinuity in the form of crack which runs through the concrete section has a complex phenomenon taking place at the interface where sliding and rotation deformation contribute to the overall stability. Modeling dam with discontinuities in the dam monoliths proved to be more realistic in the analysis of dam than considering a monolith dam with no dam discontinuities. Significant relative displacements between the monoliths and the permanent relative displacement at the end of seismic input have been observed at the discontinuities in this case. Modeling the foundation rock discontinuities represent the field conditions in the analysis more realistically. It is clearly indicated from the study that the interaction between dam monoliths and discontinuities in the foundation rock mass provide more realistic dam response.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, 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
Pal, Shilpa and Paul, Dilip K., "Influence of Dam and Foundation Discountinuities Using Discountinuum Approach — A Case Study" (2013). International Conference on Case Histories in Geotechnical Engineering. 85.
https://scholarsmine.mst.edu/icchge/7icchge/session03/85
Influence of Dam and Foundation Discountinuities Using Discountinuum Approach — A Case Study
Chicago, Illinois
Dam-foundation interaction plays an important role in the design and analysis of concrete gravity dams as has been reviewed from the failures of dams in the literature. The objective of the study is to understand the behavior of a concrete gravity dam taking into account the effect of dam and foundation discontinuities using three-dimensional Distinct Element Code. Different models have been formulated considering the complexities involved in the modeling of the dam structure, dam-foundation system and the results have been compared. Modeling the dam with the discontinuity in the form of crack which runs through the concrete section has a complex phenomenon taking place at the interface where sliding and rotation deformation contribute to the overall stability. Modeling dam with discontinuities in the dam monoliths proved to be more realistic in the analysis of dam than considering a monolith dam with no dam discontinuities. Significant relative displacements between the monoliths and the permanent relative displacement at the end of seismic input have been observed at the discontinuities in this case. Modeling the foundation rock discontinuities represent the field conditions in the analysis more realistically. It is clearly indicated from the study that the interaction between dam monoliths and discontinuities in the foundation rock mass provide more realistic dam response.
