Enhancement Of Uplift Capacity Of Shallow Foundation On Cohesionless Soils Using Geotextile Reinforcement

Abstract

The uplift resistance of soil is critical in geotechnical engineering, especially for foundations subjected to upward forces induced by wind, wave action, or seismic activity. This study investigates the enhancement of uplift capacity of shallow foundations embedded in cohesionless soil, under varying moisture conditions and compaction levels. A comprehensive experimental program was conducted using woven geotextile reinforcement and a trench-anchor system. The uplift behaviour was analyzed by varying the embedment depth to footing width ratios (D_f/B = 0.5, 1, 2, 3) and relative compaction levels (65%, 80%, 95% of MDD), under dry, OMC, and submerged conditions. Results revealed a significant improvement in uplift capacity with geotextile reinforcement, particularly at higher compaction levels and embedment depths. Cohesionless soils displayed the highest uplift resistance at OMC, while submerged conditions reduced resistance, albeit mitigated by geotextiles. The study contributes valuable insights for optimizing foundation designs in uplift-critical applications, offering a cost-effective and sustainable approach to improving safety and performance in civil engineering structures.