Question

11. A natural slope is to be evaluated for permanent displacement under a design earthquake. The slope is 33 m tall and comprises mainly sandy soil. The slope angle is 38, Its unit weight is 18.2 kN/m3, and its fric- tion angle is 40°. The peak ground acceleration is 0.5 g, and the peak ground velocity is 0.5 m/sec. Evaluate the permanent displacement of the slope using the Newmark sliding block method. 12. The problem statement is the same as in Problem 11. The average shear wave velocity in the soil slope was measured to be 90 m/sec The earthquake magnitude in Richter scale is 7.5. Evaluate the earthquake-induced permanent displacement of the slope using the Makdisi-Seed method.

Problem 11 and 12

Answer 1

D Given that Vmax mls, amax .59 permanent displacement produted by earthguate motion wwes 9iven by euw mark is Placoment PYoduce amax 2au a amax 2 X 0.0853 x 0.085 xg. 0.88 18m 88-18 cm = 0,0859 0max = 88-18 cm o.085 CA a rnax : 8노 o.o uA To Not Given amax Pev manent diKplacement by ma k disi-Seed PloCeduTe つ