Earthquake Impact Analyses on Slopes Using Finite Element and Limit Equilibrium Methods
The objective of this research is to determine factor of safety for various cut slopes under the influence of earthquake activity. Finite element method was used to generate initial static stress condition and run dynamic analyses of the cut slopes. Factor of safety was then calculated using limit equilibrium method. Both sand and clay were analyzed in this study. The results show that steep slopes with initial safety factor of 1.5 are capable to sustain earthquake magnitude of 0.25g due to high shear strength of the soil. However, slopes with friction angle less than 21º for sand and cohesion value less than 38 kPa for clay are not stable. This shows that earthquake loading should be considered in the design of cut slopes in Malaysia.
Y. H. Ong et al., "Earthquake Impact Analyses on Slopes Using Finite Element and Limit Equilibrium Methods", Advanced Materials Research, Vols. 163-167, pp. 3868-3871, 2011