Fig. 12

History curves of monitoring points obtained by the double strength reduction method 3 (global zone Fc = 1.69, Fφ = 1.3, shear zone Fφ = 1.1): (a) displacement (units: cm); (b) stress (units: Pa); Note:UUX denotes the horizontal displacement of Node 4; UUY denotes the vertical displacement of Node 4; SEQV_6 denotes the Mises equivalent stress of Node 6; SEQV_7 denotes the Mises equivalent stress of Node 8.