... 10 11 12 13 Ztb fsi li mf fi.mf.li ∑fi.mf.li 2. 5 4.5 6.5 8.05 9.6 11.6 13.6 15.6 17 .2 18.4 20 22 23 .45 0.45 0.55 0.6 0.6 3.135 3 .24 9 3.367 3.4 82 3.567 3.630 7.9 8 .2 8.38 2 1.1 2 2 1 .2 1 .2 2 0.9 ... 41 ,25 +5,61.3,55+9.19.5 ,2= 108,95 KN/m2 fs2 = 38,9+(1 – sin 20 ,08) 108,95.tan 20 ,08 =65,05 KN/m2 • Lớp : σ’v3 = 108,95+9,19.5 ,2+ 9,08 .2, 45=179 KN/m2 fs3 = 56,8+(1-sin 17,48).179.tan 17,48= 96 ,2 KN/m2 σ’vp ... =179+9,08 .2, 45 =20 1 ,2 KN/m2 Vậy thành phần chịu tải ma sát xung quanh cọc Qs = As1.fs1 + As2.fs2 + As3.fs3 = u.l1.fs1 + u.l2.fs2 + u.l3.fs3 = u.( l1.fs1 + l2.fs3 + l3.fs3) =1 ,2. (7,1 .20 ,05 +10,4.65,05...