Experimental Study on the Negative Skin Friction of the Pile Group Induced by Rising and Lowering the Groundwater Level

Table 1

Parameters of soil for the test.

Item	Gs	ρ	ρd	ρ′	w	φ	D10	D30	D60	Cc	Cu
Value	2.67	1.1291	1.0776	0.8145	4.633	31.1	0.605	0.26	1.13	1.1	4.35
Unit		g/cm^3	g/cm^3	g/cm^3	%	°	mm	mm	mm