Reliability Analysis For Anti-sliding Stability Of Gravity Dams Based On RAGA

Anti-sliding stability of gravity dams is the main problem of dam designing and construction, also is a key problem because of the complexity of the features. Safety factor K is the measure of safety level of the gravity dam stability against sliding in the traditional numerical methods, these methods did not take into account the effects of gravity dams stability against sliding many factors have uncertainty, especially material parameters.The Article based on structural reliability theory and connected to the optimization model based on geometric meaning of reliability index, the study on the anti-slide stability of gravity dams is carried out RAGA.The result of reliability Analysis are more realistic for it consider the uncertainty of random factors impacting the anti-sliding stability of gravity dams; Based on geometric meaning of reliability index, improved the optimization model, variables after be normal standarded as the optimization variables directly making the programming more simple and improving the computational efficiency. Calculated the improved optimization model using RAGA can overcome the shortcomings of SGA that poor adaptability of the optimization variable changes in the size of the space, large amount of computation, easy premature convergence, control parameters set have not clear criteria guiding, etc, besides reduce the amount of computation and improve the realization way of the algorithm. Finally, programmed the corresponding C++ Programming on Microsoft Visual Studio 2005, and use this procedure in analysis of engineering examples. Analysis result show that using RAGA calculate the reliability analysis of anti-sliding stability of gravity dams is feasible and have good convergence and efficiency. Apply to calculating the reliability which is high order nonlinear and complex of anti-sliding stability of gravity dams, has certain. Engineering practical significance.