穿越湖区路段公路软土地基加固方案及处治效果研究

Research on Layout of Reinforcement and Treatment Effect of Soft Soil Ground of Lake Area Highway

文中分析了武汉-阳新一级公路湖区段软土地基在诸多的制约条件下,如何保证路基整体稳定性和安全性,从而满足路基验收的各项指标要求。通过对水泥土搅拌土室内试验分析、设计方案合理选择、复合地基强度计算、稳定性验算分析、水泥土搅拌桩加固效果数值模拟分析,提供了路基稳定的理论依据。该项目通车后近5年的运营期间,路基整体稳定且路面结构保持良好。软土地基采用合理的水泥土搅拌桩的水泥掺入比,在公路软基施工中可发挥很好的处治效果。

Under a lot of controlling conditions,how to guarantee the overall stability and safety of the subgrade and meet the requirements of the subgrade acceptance is analyzed for the soft soil foundation of Wuhan-Yangsin first grade highway lake area.By means of laboratory test analysis of the cement mixing soil,choosing of a reasonable design plan,calculation of the strength of composite foundation,stability checking analysis and numerical simulation analysis of reinforcement effect of cement soil mixing pile,the theoretical basis of roadbed stability is provided.The road has been open to traffic for nearly five years,the roadbed is stable and the pavement structure is good.For soft soil foundation,the reasonable cement mixing ratio of cement mixing pile is adopted.In the road soft foundation construction,good treatment effectis achieved.