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Observation of the Progressive Failure Mechanism of Reinforced Foundation Soil Using the Digital Image Correlation Technique
Geosynthetic materials have been widely used in reinforcing the weak soil underneath the shallow foundations in the recent years. Many previous static loading studies have shown that the bearing capacity of the soil with a shallow foundation on the surface is greatly increased when the soil is reinforced by a layer of geosynthetic material. The present study visualizes the deformation field and failure mechanism in geosynthetic-reinforced soil underlying shallow foundations using digital image correlation (DIC) technique. A small-scale calibration chamber was built to model a plane-strain condition for a strip footing system. A series of indentation tests were conducted using a rigid model strip footing on unreinforced soil and with soil reinforced with geonet and woven fabric geotextile. The effect of number of reinforcement layers on the deformation field within the bearing soil has been studied. The results highlighted the suitability of DIC technique to visualize the deformation in laboratory-scale experiments and clearly illustrated the effect of reinforcement on progressive failure mechanism of model footing.
Observation of the Progressive Failure Mechanism of Reinforced Foundation Soil Using the Digital Image Correlation Technique
Geosynthetic materials have been widely used in reinforcing the weak soil underneath the shallow foundations in the recent years. Many previous static loading studies have shown that the bearing capacity of the soil with a shallow foundation on the surface is greatly increased when the soil is reinforced by a layer of geosynthetic material. The present study visualizes the deformation field and failure mechanism in geosynthetic-reinforced soil underlying shallow foundations using digital image correlation (DIC) technique. A small-scale calibration chamber was built to model a plane-strain condition for a strip footing system. A series of indentation tests were conducted using a rigid model strip footing on unreinforced soil and with soil reinforced with geonet and woven fabric geotextile. The effect of number of reinforcement layers on the deformation field within the bearing soil has been studied. The results highlighted the suitability of DIC technique to visualize the deformation in laboratory-scale experiments and clearly illustrated the effect of reinforcement on progressive failure mechanism of model footing.
Observation of the Progressive Failure Mechanism of Reinforced Foundation Soil Using the Digital Image Correlation Technique
Arshad, Mazhar I. (author) / Prezzi, Monica (author) / Salgado, Rodrigo (author)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 69-79
2017-03-30
Conference paper
Electronic Resource
English
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