Three-Dimensional Nonlinear Finite Element Analysis Of Mixed-Dam Of GuanYinYan Water Power Station

The Finite Element Mothed is a new numerical analysis method, and it isdeveloping with the improvement of electronic computer technology. The methodconsiders that structure is a integer being made up of finite meshed elements, and itsolves the displacement or nodal stress of nodes of elements.The three-dimensional nonlinear finite element model of the mixed-dam of GuanYinYan water power station is created. In the model, the nonlinear characteristics ofvertical core rockfill dam is simulated by Duncan-chang EB, and the contactcondition between "roft adapte" and rockfill dam is simulated by contact element.Through global three-dimensional nonlinear finite element calculating, the stress fieldand displacement field of the "soft adapter" is analysed. selecting five transverse orlongitudinal section, their stress and displacement are also analysed. Accordingly,study its stressing characteristics and its coordination action. Additionally, the stressand displacement of contact element are analysed, and the contact condition between"soft adapter" and rockfill dam are studied.The finite element model of the third monolith is created, and in the model,contact element is used to simulate the soft interlayer. Through using the stress resultscalculated by finite element method and equivalent rigid body limit equilibriumanalysis method, stability against sliding is studied, including deep slidingresistance and sliding resistance along dam foundation. Deep sliding resistance is alseanalysed by finite element method, including strength reserves method and excessload method. In addition, the stability against sliding is alse analysed by criterion, andthe results are compared with that calculated by finite element methods.