Seismic response analysis for reservoir water-gravity dam-infinite foundation system
LIU Jun-yu
ZHANG Ping
ZHANG Si-miao
WANG Yu-yang
NING Bao-kuan
Abstract：In order to analyze the effect of reservoir water and infinite foundation radiation damping on the seismic response of reservoir water-gravity dam-infinite foundation system,the response of reservoir-gravity dam-infinite foundation system was calculated with the scaled boundary finite element method (SBFEM), finite element method (FEM)and infinite element method.The reservoir water pressure at the upstream surface of gravity dam was calculated based on SBFEM,and the effect of the infinite foundation radiation damping was analyzed with the infinite element method.Through taking Koyna gravity dam as the research subject,the response of seismic displacement time history and stress of gravity dam under the condition of different elastic modulus of foundation was obtained.With increasing the elastic modulus of foundation,the dam response increases.Compared with the calculated results from the massless foundation model,it is found that the calculated results with considering the effect of infinite foundation radiation damping are smaller.
Keywords：finite element analysisscaled boundary finite element methodgravity damreservoir water pressureinfinite elementdynamic interactionmassless foundationradiation damping
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 566-572 )