Table 2: Parameters of soil material.

Soil c/kPa /(°) /(kN/m3) E/(kPa) 1 0 38 19.5 10000 0.25 0.65 2 5.3 23 19.5 10000 0.25 0.65 3 7.2 20 19.5 10000 0.25 0.65