3-D Finite Element Simulation Analysis Of MgO-mixed Concrete Arch Dam

Based on the further study of deformation rule of MgO-mixed concrete, the theory of 3-D finite element simulation analysis of MgO-mixed concrete arch dam is discussed in this dissertation combining with the example of YangChun MgO-mixed concrete arch dam. Moreover, the pertinent simulation analysis software is developed by the author and his colleagues. The main contents are as follows.( 1 ) Transformation rules of MgO-mixed concrete are studied. Hyperbola model of MgO-mixed concrete's autogeny deformation, especially deduce of the model's parameter and building process of the model are analyzed in detail.(2) Calculating method of Autogeny deformation and creep are discussed. Based on these, timely-simulation theory of dam body's temperature field stress field and pre-process back-process method are mainly studied.(3 ) Participating in the developing of analysis < software about temperature field stress field and expand field of concrete; Combining these software with ANSYS and developing special software for simulation analysis of MgO-mixed concrete base on ANSYS.(4) The 3-D finite element simulation model of YangChun MgO-mixed concrete is established; Meanwhile the correlative parameters boundary conditions and the simulation of construction rate are also studied by the numbers. According to this, the temperature field stress field and autogeny body-expand-deformation field of YangChun arch dam during construction arid operation period are analyzed, thus many significant conclusions are got for reference.