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以 WES- 2 80 5标准中的断裂失效判据及一次二阶矩理论为基础 ,建立了焊接结构的可靠性分项系数评定方法 ,给出了分项系数的计算公式 ,并以表格形式给出常见情况不同可靠性指标和变异系数下的分项系数 ,算例表明该方法既考虑到影响结构断裂诸因素的统计变异性 ,又考虑了其分布函数的类型 ,方法简便实用 ,对于焊接工程结构的可靠性安全评定 ,具有使用价值和应用前景
Based on the fracture failure criterion and first order second moment theory in WES-2 80 5, a method to evaluate the reliability of the welded structure was established. The formulas for calculating the coefficients of the sub-coefficients were given and the results were tabulated The results show that this method not only considers the statistical variability of factors affecting structural fracture, but also takes into account the type of its distribution function. The method is simple and practical. For the welding engineering Structural safety assessment of reliability, with the use of value and application prospects