To clarify some of the inconsistencies in the research of equivalent diameter of PVDs, we constructed 3-D consolidation models of PVDs and sand drains using ABAQUS and compared models with and without sand drain resistance. When the sand drain resistance was included in the model, the equivalent diameters of the sand drains were 30, 65, 78, and 100 mm (for a 100-mm-wide, 4-mm-thick PVD) corresponding to PVD drainage depths (or soft soil layer thickness) of 2, 5, 8, and 10 m. Except for the depth of 2 m, the other results were higher than the values found in previous studies. The equivalent diameters increased with increasing consolidation depths. When the well resistance was ignored, the equivalent diameters were 20 mm for all the ground consolidation depths, which was less than the value in most previous research findings.

为了澄清PVD等效直径研究中的一些不一致之处，我们使用ABAQUS构造了PVD和排水沟的3-D固结模型，并比较了具有和不具有排水沟阻力的模型。当模型中包含防沙漏功能时，对应于PVD排水深度的等效排水口直径为30、65、78和100毫米（对于100毫米宽，4毫米厚的PVD）（ （或软土层厚度）为2、5、8和10 m。除了2 m的深度外，其他结果均高于先前研究中发现的值。当量直径随着固结深度的增加而增加。如果忽略了井电阻，则所有地面固结深度的等效直径均为20 mm，小于大多数以前的研究结果中的值。