Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/63492
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dc.contributor.authorLi, Yang Yang
dc.date.accessioned2015-05-14T05:16:47Z
dc.date.available2015-05-14T05:16:47Z
dc.date.copyright2015en_US
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/10356/63492
dc.description.abstractThe negative pore-water pressure or matric suction in unsaturated soil contributes to the shear strength and consequently the stability of residual soil slopes. Rainfall infiltration and water flow results in the decrease in matric suction, which will reduce the shear strength of the soil and may trigger slope failures. The unsaturated shear strength parameter (ϕb) is an unsaturated shear strength parameter, which indicates the rate of change in shear strength with respect to a change in matric suction. However, ϕb is not a constant value and ϕb value depends on the corresponding matric suctions. SLOPE/W (Geo-Slope International Ltd., 2012) is a commonly used tool for stability analysis. However, it is not capable of incorporating different ϕb values for different matric suctions. This report studies the effect of incorporating the same ϕb value and various ϕb values on the stability of residual soil slope during rainfall by using total cohesion method. Experiments were performed to obtain the saturated coefficient of permeability, soil-water characteristic curve (SWCC), and shear strength of the residual soil. The permeability function and the shear strength parameters were therefore determined and used in the seepage analysis and slope stability analysis. The results of the slope stability analyses showed a significant difference in factor of safety by incorporating the change of ϕb values and without considering the change of ϕb values.en_US
dc.format.extent54 p.en_US
dc.language.isoenen_US
dc.rightsNanyang Technological University
dc.subjectDRNTU::Engineering::Civil engineeringen_US
dc.titleShear strength properties and soil-water characteristic curves of residual soilen_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.supervisorHarianto Rahardjoen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.description.degreeBachelor of Engineering (Civil)en_US
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Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)
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