针对输运修正引起的自散射截面导致的负概率抽样现象，提出了一种非负修正方法，并用基准计算验证了该方法的正确性。

Because of the phenomenon that the negative self-scattering cross sections cause the negative probability sample, a nonnegative corrected method is put forward and validated by the benchmark problems.

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修正一个导致ai一直认为负修正值是一个不利状态的错误，即使这个修正是有利的(坏ai ！不我意思是好ai ！)

Fixed issue where ai always thought negative modifiers were bad, even when they were good (bad ai! No I mean good ai!)

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同时，该修正方法可应用到钻孔灌注桩及桩侧负摩阻力引起的基桩沉降计算中。

At the same time, the revised method can be used to calculate the settlement of a bored pile and that of a foundation pile caused by negative frictional resistance around the pile.

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