侵蚀性环境下混凝土结构耐久寿命预测方法探讨

侵蚀性环境下的混凝土结构的耐久寿命以混凝土因锈胀裂作为终结的标志，是一随机变量。在讨论氯离子侵蚀环境下混凝土中钢筋锈蚀特点的基础上，假设坑蚀数服从泊松过程及凹坑深度服从截尾指数分布，依随机变量极小值的统计分布理论，提出了一种侵蚀性环境下混凝土结构耐久寿命的预测方法。

DISCUSSION ON THE PREDICTING METHOD ABOUT DURABILITY LIFE OF CONCRETE STRUCTURE UNDER EROSION ENVIRONMENT CONDITION

The time of concrete crack caused by corrosion of reinforcement is definded as durability of concrete structure under erosion environment condition,and is a random variable. Based on discussing depassive and corrosion feature of the reinforcement in concrete structures under the chlorion erosion environment condition, it is assumed that the number of corrosion spot obeys poission process and the depth of spotobeysblockingtail exponent distribution.A predicting method of durability life about concrete structure under erosion environment condition is proposed according to statistics distribution theory about limit minimum of random variable.