There Are Concrete Gravity Dam On Static And Dynamic Finite Element Simulation Analysis

Gravity dam is an important structure form in water works. It is widely used in the whole world because of its many advantages such as safety and stability, easy techniques in construction, lower geological requirement and etc. As the foundation of other analysis in gravity dam's designment, stress and stability's analysis is an significant segment. Traditional calculating methods have lower adaptability and can't meet the demand of designment. With the development of FEM theory and simulating software, FEM software's simulation to gravity dam has great engineering signality and practical value.After Summing up vary kinds of analyzing methods, the FEM theories to the gravity dam are expatiated briefly. Introduced the makeup and analysis procedure of ANSYS software, and the calculating precision difference between tetrahedron element and hexahedron element are discussed, and thorough research are made to the hexahedron mesh method.FEM software ANSYS is adopted to simulate a gravity dam, which is of a real project item. In the simulating process, the concrete classify and mesh precision are take into account, the research outspread in modeling, meshing and other problems in the FEM calculating and analysis, using mixing-mesh method, complex structure's hexahedron meshing is accomplished.The calculating methods to the problem of contact in ANSYS program are studied, and the contact suture and key groove are stimulated in ANSYS program and analyzed their feasibility by examples. Contact elements and couple method are both used in simulating contact suture and compared the difference. Combine with engineering project of a weir-gate-dam, the stress and deforming are studied in different working condition under complicated loadings, the stress distribution in the cavities and piers are studied with special care, stress concentration problems are studied and a treatment method are carried out.The researching results provide significant technical warranties for the project designment. Take into account the U.S. dam design regulation, the sliding and overturning stability of the dam are calculated, thus have great referenced value to similar dam works' stability analysis.