基于GEO-SLOPE的膨胀土路基毛细水上升分析

Capillary Water Upward Movement Analysis of Expansive Soil Roadbed Based on GEO-SLOPE

应用GEO-SLOPE软件模拟了立于水中的圆柱形土柱,分析了土柱中毛细水的上升高度,并做了相关的土柱试验,观测土柱中含水量变化.通过GEO-SLOPE软件的建模分析,得到了毛细水的上升高度及上升规律.此外,采用包边处理用作路基回填的膨胀土时,垫层材料的物理性质和垫层高度会影响毛细水的上升,包边层采用石灰改性膨胀土和砂层时均可以抑制毛细水的上升,但是改性土的抑制效果比砂要好.

The GEO-SLOPE software was used to simulate and analyze capillary water's ascension height within soil columns in the presence of a water table.Some relevant experiments were also conducted to observe the movements of capillary water in soil columns.The capillary water's ascension height and its relevant behavior are obtained.When a wrapping method is used to deal with backfilled expansive soil,the physical property and height of the cushion will influence the rising of the capillary water.Both sand and an improved expansive soil cushion can suppress the rising of moisture,and an improved expansive soil cushion is better than a sand cushion.