Fragility Curves for Slope Stability of Geogrid Reinforced River Levees

When constructing flood protection structures such as river levees, oftentimes due to various factors engineers must design composite structures, i.e., reinforced earthen which comply with all the stability criteria. The most common way of reinforcing is usage geosynthetics, or mostly geogrids when talking about stability. Since geosynthetics are man-made materials produced in a controlled environment and go through quality control measures, their characteristics contain negligible amount uncertainty compared natural soils. However, geosynthetic handling, installation levee, long-term degradation can have significant effects variable magnitude on characteristics. These variability be considered random variables, then used probabilistic analyses together soil properties. To investigate geogrid’s resistance slope properties variability, conducted levee northern Croatia. It found that generally has very little effect total friction angle’s but out three geogrid layers top grid influence.