沪宁高速公路软土地基综合处理技术研究和实践

Study and Practice of Composite Soft Soil Foundation Treatment Techniques for Shanghai Nanjing Expressway

运用更切实际的沉降计算方法，优化软基处理，优化路基施工，用动态控制法确定铺筑路面的时间，科学安排施工，有效地减少工后沉降，使全线软基路段满足设计稳定要求，达到了缩短工期，提高工程质量的目的，为全线一次建成和提前通车提供了保证，并取得节省工程费５０００多万元的经济效益。

In the light of the results and assessment of the trial section of the Shanghai Nanjing expressway,a practical settlement evaluation method is employed to optimize the soft soil treatment and the subgrade construction.The period for pavement works is determined by the dynamic control method so as to make a rational arrangement for the construction and to control the residual settlements.Thus,the road sections with soft soil foundation reached the required stability and the construction period was shortened,besides,50 million yuan was saved from the project budget.