RCC Gravity Dam Of 3d Nonlinear Static Dynamic Analysis

In China the construction of gravity dam is the main dam type,it have security and reliability, construction technology simple, It is less demanding on the rock foundation and requirement not higher significant advantages. This is widely used in home and abroad. In recent years RCC gravity dam because of its high speed of construction and low cost are more and more used. In the design of gravity dam in stress analysis is an important calculation component , and traditional method poor adaptability, have already can't meet the design requirements. With the perfection of finite element theory and simulation software development, using the finite element program for simulation of gravity dam is of important engineering significance and practical value.The engineering is rely on a hydropower station of RCC gravity dam ,using finite element analysis program to establish a connection section of the dam and water retaining dam which is three-dimensional finite element model, Then the calculation of dam structure model is linear and nonlinear finite element static and dynamic analysis. Main made the following several aspects of work:1, Reference related literature at home and abroad, summarizes the development situation of RCC gravity dam, introduces the development history of static and dynamic finite element method and the basic principle and the basic principle of non-linear finite element.2, Using ABAQUS software to retaining dam in the applied initial geostress and initial geostress is not applied in both cases the displacement and stress are compared.3, Using ABAQUS software, based on the design parameters of a hydropower station to establish a connection section of the dam and water retaining dam of three-dimensional finite element model, which is calculated in different conditions connection section of the dam and water retaining dam of stress and displacement etc. then studies the vertical tensile stress of the dam heel area and the compressive stress of dam toe area.4,To connection section of the dam and water retaining dam to the modal analysis, and study the natural vibration frequency and structural vibration model, and compares to consider additional quality and not consider additional quality results; In modal analysis of structure, on the basis of earthquake response spectrum analysis, research block dam section and links section of the dynamic stress numerical; Combination of normal impoundment level condition and earthquake for overlay analysis, and study the structure of the various parts of the work of the displacement and stress behavior.5, To connection section of the dam and water retaining dam time-history analysis to study the structure of each place workability states such as displacement and stress. And compare the response spectrum and time history analysis results, analysis the advantages and disadvantages of the two methods. For the dam seismic design provides reference.