加速遗传算法在水工结构可靠度分析中的应用

Application of accelerating genetic algorithm to reliability analysis of hydraulic structures

基于可靠指标的几何含义,运用遗传算法的基本原理,将基于实数编码的加速遗传算法(RAGA)用于水工结构的可靠度计算。对优化模型进行改进,并编制了相应的C++程序,最后通过算例表明,RAGA在求解可靠度问题时具有良好的收敛性和高效性,适用于求解高次非线性和复杂的水工结构可靠度问题。

Based on the geometric implication of the reliability index and the basic principle of the genetic algorithm, a real coding based accelerating genetic algorithm（RAGA） is put forward to calculate the structural reliability of hydraulic structures. The optimization model is improved and the corresponding C＋＋ program is worked out. Calculation examples illustratethat the RAGA has good convergence and efficiency in calculating reliability, and it is applicable for solving the problem of high order nonlinear reliability of the complex hydraulic structures.