真空预压法排水带未穿透的软土层固结效果研究

Study on Consolidation Effect of Soft Soil Unpenetrated by Drainage Board Under Vacuum Preloading

为了研究真空预压法排水带未穿透的软土层的固结沉降效果,运用大型通用有限元软件ABAQUS对实际工程进行数值计算,得到了真空预压法排水带未穿透的软土层的孔隙水压力变化曲线以及固结沉降曲线,并与现场监测数据进行了对比分析。在实际工程中,可以考虑排水带影响深度,合理地设计其打设深度,节约工程成本。

In order to study consolidation effect of soft soil unpenetrated by drainage board under vacuum preloading,the practical engineering is simulation calculated by the large general finite element software ABQUS to get the curves of pore water pressure and consolidation settlement. The results are analyzed contrastively with field monitoring data. It is pointed out that in the practical engineering,the depth of drainage board can be designed reasonably to save the cost of engineering by considering the influential depth of drainage board.