黄泛区市政道路软沙土地基处理技术研究——以黄河国际生态城龙泉社区项目为例

Research on Soft Sandy Soil Foundation Treatment Technology for Municipal Roads in Flooded Area of the Yellow River-Taking Longquan Community Project of the Yellow River International Eco-city as an Example

为研究适用于黄泛区软沙土的地基处理技术,文章采用模型箱试验与数值计算相结合的方法,对比分析不同水灰比、不同注浆压力下压密注浆软沙土的物理力学特性及注浆深度为0、5 m、8 m、10 m时道路地基的沉降、应力特性。研究发现,采用压密注浆法加固软沙土地基,可有效减少道路沉降,虽然会增加竖向应力,但地基整体的稳定性良好。

In order to study the foundation treatment technology suitable for soft sandy soil in the flooded area of the Yellow River,this paper uses the method of combining model box test with numerical calculation to compare and analyze the physical and mechanical properties of compacted grouting soft sandy soil under different water-cement ratios and different grouting pressures,as well as the settlement and stress characteristics of road foundation when the grouting depth is 0,5 m,8 m and 10 m.It is found that using compaction grouting method to reinforce soft sandy soil foundation can effectively reduce the road settlement.Although it will increase the vertical stress,the overall stability of the foundation is good.