Nonlinear creep damage model considering effect of pore pressure and analysis of long-term stability of rock structure
Source abstract
Abstract
Water changes natural seepage in the surrounding geological environment and weaken rock mass of valley during reservoir impounding, which result in large time-dependent deformation of foundation of dam. A nonlinear creep damage model considering water effect is proposed by taking into account the influence of pore pressure on the spherical stress tensor and yield surface. The elastic-viscoelastic model is consisted of a spring and several cascaded Kelvin models. The model is implemented in the ABAQUS user material subroutine. The accuracy of the model is verified by the triaxial creep test of saturated sandstone and dry sandstone. Then it is applied in the valley contraction analysis during impounding of Xiluodu high arch dam.
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Research context
OpenAlex topics: Geoscience and Mining Technology · Rock Mechanics and Modeling · Geomechanics and Mining Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing, China
Department of Water Conservancy and Electric Power, Qinghai University, Xining, China
Fujian Tendering Purchasing Group Co. Ltd, Fujian, China
Funding
State Key Laboratory of Hydroscience and Engineering · National Natural Science Foundation of China · National Key R&D Program of China
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