Abstract
In order to study the sensitivity of factors affecting the homogeneous building slope stability, the orthogonal test design method and shear strength reduction finite element method were used. The stability safety factor of the slope was used as the analysis index, and the range analysis of results of 18 cases were carried out. The results show that the order of sensitivity of slope stability factors is: internal friction angle, slope height, cohesion, slope angle, bulk density, elastic modulus, Poisson's ratio. The analysis results have reference significance for the design and construction of building slope projects.
Highlights
The problem of slope stability is widespread in industrial and civil buildings, roads, railways, mines, and water conservancy projects
The author overcomes the deficiencies of the traditional single factor analysis method and applies the shear strength reduction finite element method to calculate and statistically analyze the stability safety factors of 18 slope examples, obtain the order of sensitivity of the factors affecting stability, discuss the results of the analysis for reference by the relevant engineering technicians
According to the parameters used in the finite element analysis of slope stability, seven factors such as slope height H, slope angle α, cohesion c, internal friction angle, bulk density, elastic modulus E, and Poisson ratio μ were selected, and three levels were selected to every factor ( Table 1), so L18 ( 37 ) orthogonal array(Table 2) is used
Summary
The problem of slope stability is widespread in industrial and civil buildings, roads, railways, mines, and water conservancy projects. There are many factors that affect slope stability, such as slope height, slope angle, the parameters of physical and mechanical properties of rock and earth mass, construction process, role of water, weathering, earthquake and so on. The influences of these factors on the stability of the slope are certainly not the same. The author overcomes the deficiencies of the traditional single factor analysis method and applies the shear strength reduction finite element method to calculate and statistically analyze the stability safety factors of 18 slope examples, obtain the order of sensitivity of the factors affecting stability, discuss the results of the analysis for reference by the relevant engineering technicians
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