Deformation prediction of concrete face rockfill dams based on nonlinear dilatancy model
PAN Jia-jun1, WANG Guan-qi2, CHENG Zhan-lin1, YU Ting2, JIANG Ji-wei1
1. Key Laboratory of Geotechnical Mechanics and Engineering of the Minster of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China; 2. Chengdu Engineering Corporation Limited, Chengdu 610072, China
Abstract：A simple and robust nonlinear dilatation constitutive model with clear mechanics concept is introduced, and the stiffness coefficient matrix of constitutive relationship is presented. A kind of coarsed-grained soil is collected from a rockfill dam, and true triaxial consolidated drained shear tests with different values of b are conducted. The comparison between the calculated and test results is employed to validate the nonlinear dilatation model. On this basis, the nonlinear dilatation model and Ducan-Chang E-B model are taken into account respectively to simulate the whole process of layered filling of dam, staged construction of face slab and staged impoundment. Based on the calculated results, the stress-strain relationships of dam body and concrete face slab are compared. Finally, the nonlinear dilatation constitutive model is verified to be available in the static finite element analysis of concrete face rockfill dams.
潘家军,王观琪,程展林,余挺,江洎洧. 基于非线性剪胀模型的面板堆石坝应力变形分析[J]. 岩土工程学报, 2017, 39(s1): 17-21.
PAN Jia-jun, WANG Guan-qi, CHENG Zhan-lin, YU Ting, JIANG Ji-wei. Deformation prediction of concrete face rockfill dams based on nonlinear dilatancy model. Chinese J. Geot. Eng., 2017, 39(s1): 17-21.
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