Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Uncertainty analysis of reinforced soil slope stability by pile

Document Type : Original Article

Authors
Rasoul Jani 1
Amir Jani 2
1 1.Assistant Professor, ,Department of Civil Engineering, Tabriz Branch , Islamic Azad University, Tabriz, Iran. 2.Robotics & Soft Technologies Research Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran,
2 Master of Geotechnics, Department of Civil Engineering Tabriz Branch. Islamic Azad University. Tabriz.Iran
10.22065/jsce.2024.407940.3195
Abstract
In design science, in order to avoid the complexity of the problem, many involved factors are removed with simple assumptions. Simplifying design relationships causes uncertainty and reduces the validity of calculations. In this research, it is tried to study and investigate the relationships governing the stability of earthen gables from the perspective of uncertainty. The use of stabilizing piles can increase the stability of the gables as a barrier element against sliding and improve its performance against incoming loads, but the safety factor called the reliability factor alone should not be the basis of decisions because it is calculated by conventional deterministic methods. And it is not able to directly express the effect of uncertainties. Therefore, in order to evaluate and apply the role of uncertainties, it is necessary to use probabilistic concepts and methods. In this research, slope stability has been evaluated by deterministic analysis and limit equilibrium method in GeoStudio software in the Slope/w module. In the second step, with the help of the probabilistic Monte Carlo method, the uncertainties in the problem are analyzed. Modeling of the reinforced gable has been done by Bishab, Janbo and Morgenstern methods. Bishab and Morgenstern's method showed similar and more reliable behavior than Janbo's method. At the end, the results of deterministic analyzes and the probabilistic Monte Carlo method have been compared in different situations. This comparison with Morgenstern's method has been done to investigate the role of four influential factors in the stability of the gable. The results showed that with increasing the distance of the pile from the bed and heel of the gable as well as the angle of the gable, the reliability coefficient and the reliability index decrease exponentially.
Keywords
Slope Stability
Limit Equilibrium
Factor of safety
Indices of Reliability
pile

Subjects

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Journal of Structural and Construction Engineering
Volume 11, Issue 7 - Serial Number 84
October 2024
Pages 189-206

  • Receive Date 11 September 2023
  • Revise Date 23 December 2023
  • Accept Date 04 February 2024