Effect of Earthquake on the Stability of Slope by Pseudo-Static and Dynamic Approach

Abstract

In recent years, the earthquake has become one of the most common catastrophic events throughout the world. During earthquakes, various types of slope-related failures occur which result in the loss of lives and economic damages. The aim of the present study is to examine the consequence of earthquakes on the slope stability for different cohesion of soil and slope angles
by pseudo-static and dynamic approaches. A comparison of the safety factors of slopes during earthquakes between pseudo-static and dynamic approaches is also made to justify the efficacy of the pseudo-static approach. The geometric model is included
in GeoStudio software (SLOPE/W and QUAKE/W, whichever appropriate) and the factor of safety is computed for different angles of slopes and cohesion considering pseudo-static and dynamic approaches. The factor of safety, computed by pseudo-static
and dynamic approaches for different slope angles and cohesion, shows a reasonable agreement between them that justifies the efficacy of the pseudo-static approach even though real time history data are not used in calculating the factor of safety.