某新建高速公路工程由于工程自身的特殊性,一般会与既有铁路的发生交叉和穿越已不可避免。为了配合高速公路建设的发展,发挥原有铁路的空间潜力,节省施工时间,后续高速公路工程往往需下穿一些既有铁路。主要是运用价值工程原理对高速公路穿高速铁路的施工方案选择进行优选,找出一个在功能满足的情况下综合得分最高的一个方案。使得方案决策的综合目标得到了很好地实现。 Due to the particularity of the project itself, a new expressway project usually crosses and crosses with the existing railway has been inevitable. In order to meet the development of expressway construction, give full play to the potential of existing railways and save construction time, the follow-up expressway projects often have to be pierced with some existing railways. Mainly the use of value engineering principle of highway construction plans to wear high-speed railway to choose the best, find a functionally meet the highest overall score of a program. The overall goal of program decision-making has been well achieved.