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在引入全寿命周期费用分析理念的基础上,分析了公路软土地基处治工程的全寿命周期费用组成及其计算方法,建立了包括加固处理费、维修费及加固节省费用的时间价值三项费用在内的公路软土地基处治全寿命周期费用比较简化公式。以此为基础并结合具体工程进行了某高速公路软土地基高填土路段处治技术方案的选择,结果表明采用全寿命周期费用分析法在保证道路使用性能和使用寿命的前提下最多可节省费用181%。最后提出了基于全寿命周期费用分析法的公路软土地基处理方案选择流程,研究成果可为类似公路软土地基处治工程的设计方案制定提供理论指导和借鉴。
Based on the concept of life cycle cost analysis, this paper analyzes the life-cycle cost components of highway soft soil foundation treatment and its calculation method, and establishes the three cost including the reinforcement processing fee, maintenance fee and time-value of the reinforcement cost-saving The calculation of the simplified life-cycle cost of highway soft soil foundation should be simplified. Based on this, the selection of technical solutions for treatment of high fill section of expressway soft soil foundation is carried out based on specific engineering. The results show that the method of full life cycle cost analysis can save the cost up to the premise of ensuring the road performance and service life 181%. Finally, the selection process of highway soft soil foundation treatment based on life cycle cost analysis is put forward. The research results can provide theoretical guidance and reference for the design of highway soft soil foundation treatment project.