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Analysis of Settlement Profiles of Shallow Strip Footings Resting on Geosynthetic-Reinforced Sands
https://orcid.org/http://orcid.org/0000-0002-9290-7966
The present study involves the development of a small-scale physical model for analyzing the settlement profiles under shallow strip footing resting on geosynthetic-reinforced sands. Air-dried sand with an average particle size (D50) of 0.48 mm was used as the model soil. The selection of model reinforcement was made by adopting scaling laws linking the tensile strength characteristics of model geosynthetic to that of commercial prototypes. A series of experiments were performed by pluviating sand at a relative density of 90%, and by varying the number and spacing between the subsequent reinforcing layers. The tests were performed under displacement-controlled conditions, and instrumented using a load cell and linearly variable displacement transducer (LVDT). The front side of the container was made of a perspex sheet to aid in the particle image velocimetry (PIV) technique. The results were interpreted by plotting the load–displacement curve and the displacement vectors obtained through PIV analysis. The reinforcement inclusion was observed as effective in controlling the heaving of the foundation and overall soil settlement. From the displacement vectors, the load dispersion angle was observed to be in the range of 20° to 30°, and was found to increase with higher reinforcement layers.
Analysis of Settlement Profiles of Shallow Strip Footings Resting on Geosynthetic-Reinforced Sands
https://orcid.org/http://orcid.org/0000-0002-9290-7966
The present study involves the development of a small-scale physical model for analyzing the settlement profiles under shallow strip footing resting on geosynthetic-reinforced sands. Air-dried sand with an average particle size (D50) of 0.48 mm was used as the model soil. The selection of model reinforcement was made by adopting scaling laws linking the tensile strength characteristics of model geosynthetic to that of commercial prototypes. A series of experiments were performed by pluviating sand at a relative density of 90%, and by varying the number and spacing between the subsequent reinforcing layers. The tests were performed under displacement-controlled conditions, and instrumented using a load cell and linearly variable displacement transducer (LVDT). The front side of the container was made of a perspex sheet to aid in the particle image velocimetry (PIV) technique. The results were interpreted by plotting the load–displacement curve and the displacement vectors obtained through PIV analysis. The reinforcement inclusion was observed as effective in controlling the heaving of the foundation and overall soil settlement. From the displacement vectors, the load dispersion angle was observed to be in the range of 20° to 30°, and was found to increase with higher reinforcement layers.
Analysis of Settlement Profiles of Shallow Strip Footings Resting on Geosynthetic-Reinforced Sands
https://orcid.org/http://orcid.org/0000-0002-9290-7966
The present study involves the development of a small-scale physical model for analyzing the settlement profiles under shallow strip footing resting on geosynthetic-reinforced sands. Air-dried sand with an average particle size (D50) of 0.48 mm was used as the model soil. The selection of model reinforcement was made by adopting scaling laws linking the tensile strength characteristics of model geosynthetic to that of commercial prototypes. A series of experiments were performed by pluviating sand at a relative density of 90%, and by varying the number and spacing between the subsequent reinforcing layers. The tests were performed under displacement-controlled conditions, and instrumented using a load cell and linearly variable displacement transducer (LVDT). The front side of the container was made of a perspex sheet to aid in the particle image velocimetry (PIV) technique. The results were interpreted by plotting the load–displacement curve and the displacement vectors obtained through PIV analysis. The reinforcement inclusion was observed as effective in controlling the heaving of the foundation and overall soil settlement. From the displacement vectors, the load dispersion angle was observed to be in the range of 20° to 30°, and was found to increase with higher reinforcement layers.
Analysis of Settlement Profiles of Shallow Strip Footings Resting on Geosynthetic-Reinforced Sands
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Shin, Eun Chul (editor) / Choudhury, Deepankar (editor) / Joseph, Anil (editor) / Pai, Rahul R. (editor) / Tabish, Quamar (author) / Kundu, Saptarshi (author) / Ghosh, Ambarish (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
2024-05-01
12 pages
Article/Chapter (Book)
Electronic Resource
English
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