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Mathematical Problems in Engineering
Volume 2014, Article ID 573962, 13 pages
http://dx.doi.org/10.1155/2014/573962
Research Article

Dynamic and Static Combination Analysis Method of Slope Stability Analysis during Earthquake

1School of Civil Engineering, Chongqing University, Chongqing 400045, China
2Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing 400045, China
3Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China
4Institute of Ground Disaster Prevention in Fukui, Fukui 910-0004, Japan

Received 12 June 2014; Accepted 28 August 2014; Published 12 October 2014

Academic Editor: Gen Qi Xu

Copyright © 2014 Liang Lu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The results of laboratory model tests for simulating the slope failure due to vibration, including unreinforced slope and the slope reinforced by using geotextile, show that the slope failure occurs when a cumulative plastic displacement exceeds a certain critical value. To overcome the defects of conventional stability analysis, which evaluates the slope characteristics only by its strength parameters, a numerical procedure considering the stiffness and deformation of materials and geosynthetics is proposed to evaluate the seismic slope stability. In the proposed procedure, the failure of slope is defined when the cumulative plastic displacement calculated by a dynamic response analysis using actual seismic wave exceeds the critical value of displacement estimated by a static stability analysis considering seismic coefficient. The proposed procedure is applied to the laboratory model tests and an actual failure of slope in earthquake. The case study shows the possibility that the proposed procedure gives the realistic evaluation of seismic slope stability.