Soil reinforcement and soil confinement are the methods in ground improvement techniques, these methods are commonly adopted in geotechnical engineering to stabilize the soil. Geosynthetic reinforced soil method has been increasingly used in field of civil engineering practice over the last few decades, the use of geosynthetics to make the soil stronger is one of the extremely beneficial techniques under monotonic and repeated loads. In the present investigation a series of laboratory tests were conducted to improve the soil resistance under repeated loading. Geogrid (2–dimensional) and PVC pipes are combined together to create a 3-Dimensional system and is used to enhance the load settlement performance of the model footing of square shape resting over sand. The effect of spacing between reinforced layers, numbers of geogrid with PVC pipes (3D) reinforced layers and height of confinement from the PVC pipes were studied. The results are presented in terms of Settlement Ratio (SR) and Cyclic Resistance Ratio (CRR). The experiment demonstrated that the provision of 3-D reinforcement element is effective in improving the performance of footing resting on them.

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A Study on the Performance of 3D Geogrid Reinforced Sand Under Repeated Loading

  • N. Avinash,
  • S. Gangadhara,
  • K. S. Lakshmisha

摘要

Soil reinforcement and soil confinement are the methods in ground improvement techniques, these methods are commonly adopted in geotechnical engineering to stabilize the soil. Geosynthetic reinforced soil method has been increasingly used in field of civil engineering practice over the last few decades, the use of geosynthetics to make the soil stronger is one of the extremely beneficial techniques under monotonic and repeated loads. In the present investigation a series of laboratory tests were conducted to improve the soil resistance under repeated loading. Geogrid (2–dimensional) and PVC pipes are combined together to create a 3-Dimensional system and is used to enhance the load settlement performance of the model footing of square shape resting over sand. The effect of spacing between reinforced layers, numbers of geogrid with PVC pipes (3D) reinforced layers and height of confinement from the PVC pipes were studied. The results are presented in terms of Settlement Ratio (SR) and Cyclic Resistance Ratio (CRR). The experiment demonstrated that the provision of 3-D reinforcement element is effective in improving the performance of footing resting on them.