A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The effect of soil suction in stability of partially submerged slopes
Abstract The paper deals with the stability of slopes under drawdown conditions taking into account the effect of negative pore-water pressures, usually neglected in routine analyses. A simplified unsaturated soil profile above the water table was assumed and soil suction was estmiated using a Brooks and Corey type soil-water characteristic curve. A parametric study was carried out to evaluate the influence of geometrical, physical and mechanical parameters of a simple slope. The results for complete and rapid drawdown conditions show that the factor of safety varies less than 10% for dams or reservoirs with initial drawdown ratios less than 0.3. Soil suction becomes more significant (safety factor variation up to 50%) for railway or road embankments with the water level at the base of the slope.
The effect of soil suction in stability of partially submerged slopes
Abstract The paper deals with the stability of slopes under drawdown conditions taking into account the effect of negative pore-water pressures, usually neglected in routine analyses. A simplified unsaturated soil profile above the water table was assumed and soil suction was estmiated using a Brooks and Corey type soil-water characteristic curve. A parametric study was carried out to evaluate the influence of geometrical, physical and mechanical parameters of a simple slope. The results for complete and rapid drawdown conditions show that the factor of safety varies less than 10% for dams or reservoirs with initial drawdown ratios less than 0.3. Soil suction becomes more significant (safety factor variation up to 50%) for railway or road embankments with the water level at the base of the slope.
The effect of soil suction in stability of partially submerged slopes
Bellezza, I. (author) / Fratalocchi, E. (author)
2005-01-01
13 pages
Article/Chapter (Book)
Electronic Resource
English
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