Fig 1.
Parameter sensitivity analysis process based on sPCE.
Fig 2.
Schematic diagram of the project layout.
Fig 3.
Finite element model of the CFRD.
Table 1.
The laboratory geotechnical test parameters of each material.
Table 2.
The statistical eigenvalue and sampling range.
Fig 4.
Comparison between the FEM results and the sPCE model response.
Table 3.
The calculation error of the sPCE model.
Table 4.
The probability distribution error of the sPCE model response.
Fig 5.
Node location selected for sensitivity analysis.
Fig 6.
Parameter sensitivity statistics of vertical displacement.
Fig 7.
Parameter sensitivity statistics of horizontal displacement.
Table 5.
Average sensitivity index of each parameter.
Fig 8.
The sensitivity index distribution of vertical displacement.
Fig 9.
The sensitivity index distribution of horizontal displacement.
Table 6.
The statistical eigenvalue and sampling range.
Fig 10.
The FEM results and the displacement interval of the sPCE model response.
Fig 11.
The probability distribution of dam displacement.
Table 7.
The calculation error of the sPCE model.
Table 8.
The probability distribution error of the sPCE model response.
Fig 12.
First-order sensitivity index statistics of single parameter in different zones.
Fig 13.
Second-order sensitivity index statistics of parameter interaction in different zones.
Table 9.
Average sensitivity index of each parameter in different zones.