通常的拱坝优化设计建立在确定性概念的基础上 ,难以考虑结构本身和外界条件的不确定性因素 .本文以统计数学和模糊数学的概念为基础 ,建立了一种考虑强度安全性的基于模糊可靠度概念的拱坝优化模型 ,并通过实例计算 ,得到了较为满意的结果 ,验证了模型的合理性 . The typical arch dam optimization design is based on the concept of certainty and it is difficult to consider the uncertainty factors of the structure itself and the external conditions.Based on the concepts of statistics and fuzzy mathematics, Fuzzy optimization concept of arch dam optimization model, and through the calculation of examples, get more satisfactory results, verify the rationality of the model.