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蒙特卡罗模拟方法是进行核电参数不确定性分析、得到统计意义楼层谱的基本方法之一,但该方法要求大样本循环,计算成本较高。为提高计算效率,基于并行理论改进蒙特卡罗模拟样本循环模式,在MATLAB软件平台上完成了楼层反应谱概率分析并行程序的开发。数值算例表明,该程序实现了核电结构的随机参数大样本空间分析,能够有效获取不同保证率的楼层反应谱,极大提高了运算效率,同时也保证了楼层谱统计结果的计算精度。
The Monte Carlo simulation method is one of the basic methods for the statistical analysis of the uncertainty of nuclear power parameters, but this method requires a large sample cycle and the calculation cost is high. In order to improve the computational efficiency, the Monte Carlo simulation sample circulation mode was improved based on the theory of parallelism, and the parallel program of floor response spectrum analysis was completed on the MATLAB software platform. The numerical example shows that the program can realize the large sample space analysis of random parameters of nuclear power structure and effectively obtain the floor response spectrum with different guaranteed rates, which greatly improves the computational efficiency and ensures the calculation accuracy of floor spectral statistics.