Tiêu đề 16 Stresses in Soil.pdf ✅

The loss of head caused by upward seepage between the levels of A and B is h. The effective stress calculations at Points A, B, and C are as follows: At A,  Total Stress: σ஺ = Hଵγ௪  Pore Water Pressure: u஺ = Hଵγ௪  Effective Stress: σ஺ ᇱ = σ஺ − u஺ = 0 At B,  Total Stress: σ஻ = Hଵγ௪ + Hଶγ௦௔௧  Pore Water Pressure: u஻ = (Hଵ + Hଶ + h)γ௪  Effective Stress: σ஻ ᇱ = σ஻ − u஻ = Hଶ (γ௦௔௧ − γ௪) − hγ௪ = Hଶγ ᇱ − hγ௪ At C, i = ௛ ுమ  Total Stress: σ஼ = Hଵγ௪ + zγ௦௔௧  Pore Water Pressure: u஼ = (Hଵ + z + iz)γ௪  Effective Stress: σ஼ ᇱ = σ஼ − u஼ = z(γ௦௔௧ − γ௪) − izγ௪ = zγᇱ − izγ௪ Figure 3. Stresses in Saturated Soil with Upward Seepage