Field Tests and Simplified Calculation Method for Static Drill Rooted Nodular Pile

Table 3

Soil profile and parameters for the tested piles.

Name of soil layer	Thickness of soil layer (m)	a (mm/kPa)	b (kPa^−1)	τu (kPa)	ksc1 (mm/kPa)
Miscellaneous fill	1.09				150
Silty clay	1.4	6.69E − 2	4.53E − 2	17.96
Sandy silty soil	3.3	3.88E − 2	2.78E − 2	33.41
Muddy silty clay	3.9	3.31E − 2	2.80E − 2	46.17
Muddy clay	9.53	2.99E − 2	3.15E − 2	60.01
Silty clay	8.37	2.72E − 2	2.49E − 2	73.75
Silty clay with silt	10.7	4.53E − 2	2.01E − 2	88.34
Silty clay	2.3	1.38E − 2	1.023E − 2	105.51
Clay silt	3.9	4.19E − 2	9.72E − 3	102.93
Silty clay	4.9	2.12E − 2	7.69E − 3	119.24
Silty soil interbedded with silty clay	7.96	2.10E − 2	7.54E − 3	118.95
kb1 = 113.30 (kN/mm), sub1 = 4 (mm)		kb2 = 66.24 (kN/mm), sub2 = 20.9 (mm)			∆scs1 = 1 mm