Mechanical Properties of Soft Soil considering the Influence of Unloading Stress Paths

Table 3

Initial tangent modulus of soft soil under different stress paths (100 kPa).

Stress path	a [MPa^−1]	Initial tangent modulus E0 [MPa]	b [kPa^−1]	Ultimate strength (σ1-σ3)ult [kPa]	Rf^a
UU0.0	0.0791	12.64	0.0119	83.82	0.99
UU0.5	0.0932	10.73	0.0214	46.66	0.98
UU1.0	0.0144	69.49	0.0100	100.00	0.99
UU2.0	0.0080	125.00	0.0102	98.04	0.92
UU4.0	0.0057	175.44	0.0105	95.24	0.87
UU∞	0.0053	188.68	0.0072	138.89	0.94
LU∞	0.0997	10.03	0.0077	129.87	0.97

^aR = (σ₁–σ₃)/(σ₁–σ₃)_ult is the failure ratio.