Anzeige
Erschienen in:
2023 | OriginalPaper | Buchkapitel
Determination of Critical Height of Unsupported Vertical Cuts Using Experimental and Numerical Methods
verfasst von : Z. Nil Kutlu, Gregory Brennan, Won Taek Oh
Erschienen in: 5th International Conference on New Developments in Soil Mechanics and Geotechnical Engineering
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Stability of unsupported cuts are commonly analyzed numerically as a 2-dimensional problem using commercial geotechnical software such as SLOPE/W. This is also true for the unsupported cuts excavated into unsaturated soils. However, limited experimental studies have been undertaken to validate the numerical approaches in estimating the critical heights of unsupported cuts in unsaturated soils. To bridge this gap, laboratory test was conducted using a large-scale soil tank (W × L × H = 1.5 × 2.2 × 2.4 m) to determine the critical height of an unsupported vertical cut in sand with water table at 0.7 m from the surface. Excavation was simulated by removing 0.1 m height retaining panels until general failure took place. The matric suction profile in sand above the water table was established based on the suction values measured from various depths with high capacity tensiometers (i.e., T5X). The critical height determined in the laboratory test was compared with the one estimated using PLAXIS (3D).