Volume 9, Number 4 (December 2011)                   IJCE 2011, 9(4): 247-254 | Back to browse issues page


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Miraboutalebi M, Askari F, Farzaneh O. Effect of bedrock inclination on seismic slope stability according to Iran seismically data. IJCE. 2011; 9 (4) :247-254
URL: http://ijce.iust.ac.ir/article-1-264-en.html

Abstract:   (5701 Views)

In this paper, the effect of bedrock inclination on seismic performance of slopes is investigated. The study was conducted based

on dynamic analysis of different slopes, evaluation of the earthquake acceleration in sliding mass, and calculating the

permanent displacement of the slope, using Newmark sliding block. The investigation indicates that variation of the bedrock

inclination may cause the acceleration magnitude and the displacement in the sliding mass to reach to their maximum level.

This may happen in conditions that the mean period of the acceleration time history on failure surface (Tmt) and the

predominant period of the slope (Ts ) are close to each other. Typical results are presented and discussed. A two dimensional

model of a typical slope was considered and conducting dynamic analyses, the slope performance was studied for different

geometries, strength parameters and shear wave velocities. Such a performance has been studied by assessing the record of

acceleration in sliding mass (the mass above the critical sliding surface) and calculating the slope displacement using Newmark

method. It is shown that neglecting the effect of bedrock inclination, would lead to non-real results in assessing the seismic slope

performance.

Full-Text [PDF 1012 kb]   (2437 Downloads)    
Type of Study: Research Paper | Subject: Seismic Geotechnique

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