针对坝体结构在运行期受外在环境影响因素复杂，定性和定量因素相关程度高，并且含有大量缺失和模糊不确定性的特点,利用模糊数学理论构建坝体健康评估的专家模糊赋权系数。在此基础上用GA算法依据最大信息熵原理对模糊权系数进行优化，综合坝体各个方面的多种评估，形成多层次的坝体综合模糊赋权模型。选用新安江重力坝作为评估实例，对变形、渗流、应力应变等多个方面进行评估，并形成综合评估结果。实例获得了较好的分析评估结果，对所提出的方法进行了验证。

In the period of dam operation, the dam structure is suffering from complex external environment influence, and presents characteristics such as high correlation degree of qualitative and quantitative factors, a lot of missing and fuzzy uncertainty. By using the fuzzy mathematical theory the coefficients of experts’ fuzzy weight on dam health assessment are constructed, and based on this, the fuzzy weight coefficient is optimized with GA algorithm according to the maximum entropy principle. The multi-level experts’fuzzy weight model of dam health assessment is formed . Finally, the Xin’anjiang dam is selected as an evaluation example, the deformation, seepage, stress and strain and other aspects are assessed and the comprehensive assessment results are formed. The example further confirms the proposed model and has obtained good results.