Abstract: To decide the goal reliability of the method of embankment structure design is a very complicated problem, involving the balance of consideration in terms of engineering and economy. Calibration can only determine goal reliability from the point of security and engineering and fails to reflect economic factor. Hence the establishment of economic assessment mode within the service life of highway and the introduction of reliability optimization to determine embankment structure hole much signific

Key words: embankment structure, optimization, reliability

摘要： 确定路堤结构设计方法的目标可靠度是一个相当复杂的工程与经济相协调的问题。而校准法仅能从安全度和 工程设计一方面确定目标可靠度，无法反映经济性一方面。所以建立公路使用年限内的以经济评价模式，引入可靠 性优化方法对确定路堤结构的最优可靠度具有重要意义。本研究通过引入可靠性优化方法，建立公路使用年限内的 路堤结构的费用现值作为目标函数来确定路堤结构的稳定设计最优目标可靠度。

关键词: 路堤结构, 优化方法, 可靠度