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In this paper, a stress-type multi-potential surface model with the same model parameters as those of Duncan E-B model is adopted to simulate the constitutive relation of rock-fill material, and a 3-D FEM code is used to compute stresses and deformation of Jinzhong concrete faced rock-fill dam (CFRD). The computed maximum settlement of the dam at construction completion stage is in a good agreement with the measured value. The computed results show that at storage stage, the compressive stress in the concrete face slabs is dominant, while the tensile stress occurs in relative small areas near the left and right banks. This feature of stress distribution has been measured and observed on many CFRDs under operation. This multi-potential surface model can describe the dilatancy of rock-fill material, so it overcomes the shortcoming of the widely used Duncan E-B model that often produces too high slope-wise tensile stresses at the bottom of face slabs. These results show that the multi-potential surface model can improve the accuracy of stress and deformation simulation of CFRD. © Copyright.
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Journal of Hydroelectric Engineering
ISSN: 1003-1243
CN: 11-2241/TV
Year: 2011
Issue: 3
Volume: 30
Page: 158-163,174
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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