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• W2915524323 endingPage "1950066" @default.
• W2915524323 startingPage "1950066" @default.
• W2915524323 abstract "Parameter uncertainty associated with concrete arch dams always arises from modeling assumptions and the lack of knowledge or information of the engineering geological situations, especially in the seismic stability analysis of arch dams. In this research, a high arch dam is selected as a case study for probabilistic analysis of the seismic stability performance. The arch dam abutment and the dam are coupled as a system. A comprehensive approach considering contraction joints, boundaries of the probable sliding rock mass and the dam-foundation interface is presented. The contact nonlinearity is solved by using the dynamic contact model with Lagrange multiplier method. The main parameters of the probable sliding block are considered as random variables containing the friction coefficients and cohesions. Both the slippage and sliding area ratio are chosen as the engineering demand parameters (EDP). The sensitivity analysis is performed to reveal the relative influence of each parameter separately by the approximate incremental dynamic analysis (IDA) method. The friction coefficients are shown to be more crucial than the cohesions on the dam’s resistance to seismic instability. The sliding area ratio can be better used for unveiling the sliding process of the arch dam of concern, while the slippage is useful for one to judging the stability of the arch dam under seismic hazards. The Latin hypercube sampling (LHS) with approximate moment estimation is used to investigate the parameter uncertainty to the seismic stability performance of the high arch dam. The results provide a useful reference for using the median/mean-parameter model to accurately estimate the median/mean response of the dam." @default.
• W2915524323 created "2019-03-02" @default.
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• W2915524323 date "2019-06-26" @default.
• W2915524323 modified "2023-10-16" @default.
• W2915524323 title "Seismic Stability Sensitivity and Uncertainty Analysis of a High Arch Dam-Foundation System" @default.
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• W2915524323 doi "https://doi.org/10.1142/s0219455419500664" @default.
• W2915524323 hasPublicationYear "2019" @default.
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