依混凝土保护层碳化失效概率，提出了既有混凝土桥梁耐久性预测的一种简便方法。
According to the failure probability on carbonization of the concrete cover, a simple method of durability prediction is proposed for the existing concrete Bridges.
本文用模糊数学方法对构件因裂缝开展的耐久性失效概率作了初步分析，采用了“模糊事件概率” 的数学模型。
This paper has initially used the method of fuzzy sets to analyse the possibility of durability failure, and taken a mathematic model for the possibility of fuzzy event.
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