Mathematical Model and Analysis of Negative Skin Friction of Pile Group in Consolidating Soil

Table 2

Physical and mechanical parameters of soils on site.

Name	Depth/m	Density/(kN⋅m^−3)	Compression modulus/MPa	Cohesion/kPa	Internal friction angle (°)
Clay	1.86	18.4	4.61	24.5	8.7
Muddy clay	2.54	18.3	7.55	8.4	6.3
Clay	4.86	20.0	9.39	37.3	16.7
Silt with silty sand or clay	5.70	19.0	10.01	15.6	21.0
Silty clay	8.70	18.2	6.08	14.7	15.3
Silty sand	20.0	19.5	28.25	4.0	20.0