Experimental Investigation on the Vertical Bearing Characteristics of Jacked Piles in Saturated Silt Foundations under Excavation

Table 4

Ratio of ultimate tip resistance to the undrained shear strength of the soil.

(kPa)	(kPa)	Static load testing		When pile sinking of the jacked pile is finished
		(N)		(N)
50	20.2	317	31.97	295	29.75
100	43.8	665	30.93	661	30.74
150	65	920	28.83	880	27.58
100 ⟶ 50	40	637	32.44	—	—
150 ⟶ 50	54	856	32.29	—	—

Note. R denotes the pile radius; denotes ultimate tip resistance.