(1) Give an initial trial-and-error value of uB (≒209) to determine the shape of triangular wedge below the footing.
(2) Construct a logarithmic spiral according to Eq. (3).
(3) Divide the area conˆned by the failure surface into vertical slices with a uniform width of Bs=0.1 m as schematically shown in Fig. 2.
(4) Assume DTi=0.
(5) Calculate the ˆrst approximated value of Pf using Eq.(A1).
(6) Calculate DEi and Ei (i=1, 2, . . . , n) using Eq. (A2)
(7) Calculate Ti (i=1, 2, . . . , n) using Eq. (A12).
(8) Calculate an improved value of Pf using Eq. (A1).
(9) Repeat Steps (6)–(9) until the convergence of Pf is achieved (the convergence criterion for Pf was 0.3z in the present study.)
(1) Give an initial trial-and-error value of uB (≒209) to determine the shape of triangular wedge below the footing.(2) Construct a logarithmic spiral according to Eq. (3).(3) Divide the area conˆned by the failure surface into vertical slices with a uniform width of Bs=0.1 m as schematically shown in Fig. 2.(4) Assume DTi=0.(5) Calculate the ˆrst approximated value of Pf using Eq.(A1).(6) Calculate DEi and Ei (i=1, 2, . . . , n) using Eq. (A2)(7) Calculate Ti (i=1, 2, . . . , n) using Eq. (A12).(8) Calculate an improved value of Pf using Eq. (A1).(9) Repeat Steps (6)–(9) until the convergence of Pf is achieved (the convergence criterion for Pf was 0.3z in the present study.)
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