Reliability Analysis Of Concrete Gravity Dam Based On RSM And RAGA

With the needs of economic development and construction technology improved, water resources has been vigorous development, a large number of water conservancy facilities have been started. In water conservancy and hydropower project construction and operation, it is very necessary to analysis the structure of reliability and evaluation of risks to avoid or mitigate the risk of the occurrence of loss. People have been accustomed to the safety factor as a target evaluation of water conservancy projects. However, only a factor of safety information obtained from identified a set value, it does not take account of design variables in the objective existence of any of the variability, the safety of a particular coefficient for different projects may not have the same significance, and the safety factor size can not completely characterize the project to determine the degree of safety. Probability and Statistics with quantitative methods to consider engineering uncertainties, using a strict calculation of the probability to the reliability of the target structure, the structure can reflect the degree of safety. Fit the complexity of gravity dam of non-dominant regression function based on response surface method of ANSYS, to be a relatively simple function of the secondary display. In this paper, the structural reliability of the basic theory and method, analysis of the conventional methods shortcomings. In the use of fitting a function based on response surface method, will solve the reliability optimization as a process, set up the use of improved accelerating genetic algorithm for solving reliability optimization model to target, through the numerical example to verify the feasibility of the method.