TITLE:
Slope Stability Considering the Top Building Load
AUTHORS:
Micke Didit, Xiwen Zhang, Weidong Zhu
KEYWORDS:
Building Load, Finite-Difference Analysis, FLAC3D Software, Slope Factor of Safety, Slope Stability
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.12 No.3,
July
29,
2022
ABSTRACT: Slope stability is one of the most important subjects of geotechnics. The
slope top-loading plays a key role in the stability of slopes in hill slope
areas. When the building load is too large or the point of action from the
shoulder is too close, the shear stress of the slope will be significantly
greater than its shear strength, resulting in reduced slope stability.
Therefore, it is of great importance to study the relationship between the
building load and the stability of the slope. This study aims to analyze the
influence of different building loads applied at different distances on the top
of the slope and deduces their effects on the slope stability. For this
purpose, a three-dimensional slope model under different building loads with
different distances to the slope shoulder was established using the
finite-difference analysis software Flac3D. The results show that the loads
applied at different distances on the top of the slope have different effects on the slope stability. The
slope factor of safety (FOS) increases with
the increase of the distance between the top-loading and the slope shoulder;
it varies from 1.37 to 1.53 for the load P = 120 KPa, 1.27 to 1.53 for the load
P = 200 KPa, and from 1.18 to 1.44 for P = 300 KPa, resulting in the decrease
of the coincidence area between the load-deformation and the potential sliding surface. The slope is no longer
affected by the potential risk of sliding at approximately 20 m away
from the slope shoulder.