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本文以可靠性和优化理论为基础，分析和说明了以可靠度为标准的结构优化方法及模型。并以重力坝为例，说明了以可靠度为标准的结构优化的具体方法，其结果是符合实际的二本文实例还分析和说明了荷载和抗力的离散性时代化结果的影响。
Based on reliability and optimization theory, this paper analyzes and illustrates the structural optimization method and model based on reliability. Taking the gravity dam as an example, the concrete method of structural optimization based on reliability is described. The result is in line with the actual two examples of this paper. The influence of the discrete age of load and resistance is also analyzed and explained.