So studying reliability of rainwater pipe network and adopting probabilitylimit state design method based on reliability theory to design rainwater pipe network have important actual meanings.
Based on the moment estimation of limit state function for calculation of failure probability, a new reliability sensitivity analysis method is presented.
基于极限状态函数矩估计的失效概率计算，提出一种新的可靠性灵敏度分析方法。
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With these as functional requisitions, the limit-state design method for tracks is proposed on the basis of probability theory.