Date of Award
Master of Science
Civil, Construction, and Environmental Engineering
Vernon R. Schaefer
Potentially unstable slopes can be treated by several measurements such as geometry
changes, reinforcement, or avoidance of the problem. If avoidance and/or geometry changes are
not viable options, the slope may be strengthened. Strengthening of slopes can incorporate many
different technologies: drilled shafts, soil nails, tieback anchors, and micropiles as reinforcing
elements. Among these technologies, the use of piles have been found effective and economical.
The current methods of analysis for pile-reinforced slopes are based on either limit equilibrium
(LE) or geomechanical numerical modeling (finite element method, FEM, and finite difference
method, FDM). Although in recent years there has been an increase in the use of geomechanical
numerical modeling, designers still question the relative advantages, limitations, and accuracy of
these methods compared to traditional methods.
In this study, a comparative analysis have been performed, and the results of a Deep
Foundation Institute, Deep Foundations for Landslides/Slope Stabilization Committee study on
Design Comparisons of Slope Stabilization Methods are reported. The evaluation was focused
on comparing the current methods of advanced numerical modeling for pile reinforced slopes
(LE, FEM, FDM) by analyzing three cases using different analysis approaches performing
coupled and uncoupled analysis.
From the results, recommendations regarding the selection of the most beneficial method
for stability analysis are given. Conclusions regarding pile optimum location, pile optimum
length, key factors for each type of analysis, and lesson learned are presented.
Yuderka Trinidad Gonzalez
Trinidad Gonzalez, Yuderka, "Comparison of design/analysis methods for pile reinforced slopes" (2017). Graduate Theses and Dissertations. 15631.