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以 Lr为广义强度 ,以 Kr为广义应力 ,参照 SAPV— 95规范得出了功能函数 M,据此对静载下含平面缺陷的压力管道进行了可靠性分析 ;提出了计算其可靠性指标的快速收敛的迭代算法 ,并分析了可靠性指标与 Lr 和 Kr的均值及变异系数的关系 ,得出了可靠性指标能定量衡量静载下含平面缺陷的压力管道的安全状况的结论。
Taking Lr as the generalized strength and Kr as the generalized stress, the function function M is obtained with reference to the SAPV-95 standard. Based on this, the reliability analysis of the pressure pipe with planar defects under static load is put forward. Fast convergent iterative algorithm. The relationship between the reliability index and the mean and coefficient of variation of Lr and Kr is analyzed, and the conclusion that the reliability index can quantitatively measure the safety of pressure pipelines with plane defects under static loading is obtained.