Constitutive Model of Lateral Unloading Creep of Soft Soil under Excess Pore Water Pressure

Figure 7

Unloading creep stress-strain isochronous curve (viscoplastic deformation): (a) excess pore water pressure u = 0 kPa, (b) excess pore water pressure u = 20 kPa, (c) excess pore water pressure u = 40 kPa, and (d) excess pore water pressure u = 60 kPa.

(a)

(b)

(c)

(d)