在软土地基上修建高等级公路的关键技术问题是保证施工期的稳定和控制剩余沉降。通过对软土地基地质条件的充分了解 ,利用物理模型与数学模型相结合的方法能较好地解决软土地基的设计问题。通过信息化施工对填土进行现场监测 ,能有效解决填筑施工过程中的路堤稳定问题和控制剩余沉降 ,并能够确定路面施工的最佳时机 The key technical issue of constructing high-grade highways on soft ground is to ensure the stability of the construction period and control the remaining settlement. By fully understanding the geological conditions of soft soil foundation, the method of combining physical model and mathematical model can well solve the design problem of soft soil foundation. Through the information construction on-site monitoring of filling, can effectively solve the embankment stability problems during filling construction and control of residual settlement, and can determine the best time for pavement construction