Two-dimensional Finite Element Stress-Displacement Analysis for the Jinfo Mountain Concrete Face Rockfill Dam
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Abstract:
Based on the preliminary design scheme of Jinfo Mountain concrete face rockfill dam located in Chongqing, the stress deformation distributions of the dam during the completion period and storage period were analyzed through the stress deformation calculation on the static plane. The study was focused on the effects of main rockfill porosity ratio and secondary rockfill materials on the stress deformation distribution of the face slab and toe slab of the dam and the deformation of the peripheral joint, which can form the basis for the selection of dam materials. The calculation results showed that the main rockfill porosity ratios of 20.1% and 19.1% are feasible, and the secondary rockfill dam materials with the ratios between the weak weathered zone silty sandstone and shale of 7:3 and 5:5 are feasible. The stress deformation of dam body, face slab, and toe slab is small with the main rockfill porosity ratio of 20.1% and the secondary rockfill dam materials with the ratio between the weak weathered zone silty sandstone and shale of 7:3.
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