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Article

Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions

1
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
2
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100048, China
3
Development Research Center, The Ministry of Water Resource of P.R. China, Beijing 100038, China
*
Author to whom correspondence should be addressed.
Academic Editors: Miguel Á. Toledo, Rafael Morán and Paolo Mignosa
Water 2021, 13(21), 3072; https://doi.org/10.3390/w13213072
Received: 8 August 2021 / Revised: 28 October 2021 / Accepted: 29 October 2021 / Published: 2 November 2021
(This article belongs to the Special Issue Dam Safety. Overtopping and Geostructural Risks)
The seismic design and dynamic analysis of high concrete gravity dams is a challenge due to the dams’ high levels of designed seismic intensity, dam height, and water pressure. In this study, the rigid, massless, and viscoelastic artificial boundary foundation models were established to consider the effect of dam–foundation dynamic interaction on the dynamic responses of the dam. Three reservoir water simulation methods, namely, the Westergaard added mass method, and incompressible and compressible potential fluid methods, were used to account for the effect of hydrodynamic pressure on the dynamic characteristics and seismic responses of the dam. The ranges of the truncation boundary of the foundation and reservoir in numerical analysis were further investigated. The research results showed that the viscoelastic artificial boundary foundation was more efficient than the massless foundation in the simulation of the radiation damping effect of the far-field foundation. It was found that a foundation size of 3 times the dam height was the most reasonable range of the truncation boundary of the foundation. The dynamic interaction of the reservoir foundation had a significant influence on the dam stress. View Full-Text
Keywords: hydraulic structure; high gravity dams; dam-foundation-reservoir dynamic interaction; earthquake input mechanisms; hydrodynamic pressure; foundation size; reservoir length hydraulic structure; high gravity dams; dam-foundation-reservoir dynamic interaction; earthquake input mechanisms; hydrodynamic pressure; foundation size; reservoir length
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MDPI and ACS Style

Wang, C.; Zhang, H.; Zhang, Y.; Guo, L.; Wang, Y.; Thira Htun, T.T. Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions. Water 2021, 13, 3072. https://doi.org/10.3390/w13213072

AMA Style

Wang C, Zhang H, Zhang Y, Guo L, Wang Y, Thira Htun TT. Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions. Water. 2021; 13(21):3072. https://doi.org/10.3390/w13213072

Chicago/Turabian Style

Wang, Chen, Hanyun Zhang, Yunjuan Zhang, Lina Guo, Yingjie Wang, and Thiri Thon Thira Htun. 2021. "Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions" Water 13, no. 21: 3072. https://doi.org/10.3390/w13213072

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