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Advances in Civil Engineering
Volume 2018, Article ID 1786392, 9 pages
https://doi.org/10.1155/2018/1786392
Research Article

Seismic Stability Analysis of Saturated and Unsaturated Soil Slopes Using Permanent Displacement

Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China

Correspondence should be addressed to Shuai Huang; moc.361@5933iauhsgnauh

Received 20 August 2018; Revised 2 November 2018; Accepted 28 November 2018; Published 19 December 2018

Academic Editor: Hugo Rodrigues

Copyright © 2018 Shuai Huang and Yanju Peng. 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 permanent displacement has been widely used for slope seismic stability in practical engineering; however, the effect of the dynamic pore water pressure on the saturated and unsaturated soil slopes could not be neglected. In this paper, we propose a calculation method of dynamic pore water pressure by the hollow cylinder apparatus (GCTS) which is the most advanced and complicated device in lab testing on soil dynamics. Then, based on the proposed calculation method of dynamic pore water pressure combined with the limit equilibrium and finite element methods, we introduce a simple calculation method of permanent displacement, which avoids solving complex nonlinear equations and greatly simplifies the computational effort. Shaking table test results demonstrate the effectiveness and efficiency of the simple calculation method of permanent displacement, which could rapidly assess the soil slope seismic stability considering the effect of dynamic pore water pressure.