Aiming at the problem that the spatial differences of construction quality of concrete face rockfill dams lead to the spatial difference of physical and mechanical parameters of dam materials,a fine finite element analysis method considering the actual construction quality and filling progress(dam appearance)was proposed.Firstly,based on the test data of the test pit,the spatial interpolation algorithm was used to estimate the compaction quality of dam in space.Then,the quantitative relationship be-tween the parameters of the constitutive model of the dam material and the compaction quality was established,and the spatial es-timation and assignment of the parameters of any element model were realized.Finally,a fine modeling method considering the fill-ing progress(dam appearance)was proposed,and the stress and deformation of the concrete face rockfill dam were simulated and analyzed in combination with the engineering example.The results showed that compared with the average error of settlement(10.46 cm)based on the simulation of designed parameters,the average error of settlement obtained by the fine analysis method considering the actual construction quality and filling progress was only 2.41 cm,and the simulation results were in better agree-ment with the measured results.The research results provide a new way for the accurate analysis of structural behavior of concrete face rockfill dams.
关键词
混凝土面板堆石坝/施工质量/填筑进度/空间估计/精细有限元模型
Key words
concrete face rockfill dam/construction quality/filling progress/spatial estimation/fine finite element model
维普
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