Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Load Transfer Mechanisms in Anchored Geosynthetic Systems
Success of an anchored geosynthetic system (AGS) depends on the satisfactory transfer of load between the surface-deployed geosynthetic and anchors (typically ribbed reinforcing rods) driven into the slope, between the geosynthetic and soil and between the anchors and soil. A study was performed to evaluate the load transfer mechanisms at these interfaces in an AGS. A mathematical model was developed for predicting the pullout resistance of plane ribbed inclusions. The model considered the contribution of both frictional and passive resistance components of pullout resistance. Optical observation of sand around the ribs was made to determine the behavior of soil around the moving ribs during pullout. A theoretical study disclosed that the optimum anchor orientation for stabilization of infinite slopes depends on several factors including slope angle and in-situ stresses. It typically ranges from 20 to 30 degree from the normal to the slope with the anchor driven upslope. An experimental study confirmed that the soil-geosynthetic interface friction angle may be correctly predicted from the residual or critical state friction angle of the sand. Equations were developed for load transfer at curved soil-fabric interfaces. An experimental study verified that the increases in soil stress with distance from the anchor may be predicted by the developed equations.
Load Transfer Mechanisms in Anchored Geosynthetic Systems
Success of an anchored geosynthetic system (AGS) depends on the satisfactory transfer of load between the surface-deployed geosynthetic and anchors (typically ribbed reinforcing rods) driven into the slope, between the geosynthetic and soil and between the anchors and soil. A study was performed to evaluate the load transfer mechanisms at these interfaces in an AGS. A mathematical model was developed for predicting the pullout resistance of plane ribbed inclusions. The model considered the contribution of both frictional and passive resistance components of pullout resistance. Optical observation of sand around the ribs was made to determine the behavior of soil around the moving ribs during pullout. A theoretical study disclosed that the optimum anchor orientation for stabilization of infinite slopes depends on several factors including slope angle and in-situ stresses. It typically ranges from 20 to 30 degree from the normal to the slope with the anchor driven upslope. An experimental study confirmed that the soil-geosynthetic interface friction angle may be correctly predicted from the residual or critical state friction angle of the sand. Equations were developed for load transfer at curved soil-fabric interfaces. An experimental study verified that the increases in soil stress with distance from the anchor may be predicted by the developed equations.
Load Transfer Mechanisms in Anchored Geosynthetic Systems
R. D. Hryciw (Autor:in)
1990
218 pages
Report
Keine Angabe
Englisch
Soil & Rock Mechanics , Civil Engineering , Angles , Behavior , Equations , Friction , Mathematical models , Motion , Observation , Optical properties , Optimization , Orientation(Direction) , Passive systems , Reinforcing materials , Residuals , Resistance , Ribs , Rods , Sand , Slope , Soil mechanics , Stresses , Transfer , Geosynthetic materials , Soil stabilization , Load transfer , Anchors(Structural) , Load distribution , Mathematical prediction , Pullout resistance
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