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针对门式起重机主梁隐式极限状态函数的非概率可靠性分析,提出了一种基于支持向量机回归的主梁非概率可靠性分析方法。调试核函数,优化回归参数,使用训练后的支持向量机替代隐式极限状态函数。利用非概率集合理论中的区间分析法,引入尺寸比例因子,提出了基于支持向量机的起重机主梁非概率可靠性分析方法。最后用1个算例来验证本文方法,结果表明,该方法具有可行性、正确性和高精度的优点,并对其它工程结构的非概率可靠性分析具有一定的参考价值。
Aiming at the non-probabilistic reliability analysis of implicit limit state function of gantry crane, a non-probabilistic reliability analysis method based on support vector machine regression is proposed. Debug the kernel function, optimize the regression parameters, and replace the implicit limit state function with the trained support vector machine. By using the interval analysis method in non - probabilistic set theory, the scale factor is introduced and the non - probabilistic reliability analysis method of crane girder based on support vector machine is proposed. Finally, an example is used to verify the proposed method. The results show that this method has the advantages of feasibility, accuracy and precision. It also has certain reference value for the non-probabilistic reliability analysis of other engineering structures.