| Abstract [eng] |
This thesis investigates the relationship between the oedometric modulus (Eoed) and cone tip resistance (qc) in overconsolidated Pleistocene fine-grained till soils. Utilizing data from multiple Kelmė soil samples, correlation and regression analyses were conducted under varying stress levels using different analytical tools and EViews software. The findings reveal predominantly weak and statistically insignificant relationships between qc and Eoed. For Kelmė 19-1, a moderate negative correlation was identified, but regression analyses indicated that this relationship was not statistically significant. Kelmė 19-2 exhibited weak positive correlations, with both linear and polynomial regression models failing to achieve statistical significance. Similarly, Kelmė 37-2 demonstrated weak correlations and low explanatory power, suggesting no meaningful relationship between qc and Eoed. Specific stress analyses further supported these conclusions. Under 39 kPa stress, a moderate direct relationship was observed, yet the regression model lacked statistical significance and explanatory power. At 625 kPa stress, a weak inverse relationship was detected, but the regression model again did not significantly explain the variability in Eoed. Overall, the study highlights the complexity of predicting Eoed from qc in overconsolidated Pleistocene fine-grained till soils. The research underscores the limitations of laboratory tests in replicating real-world conditions and calls for further studies with more comprehensive models to better understand soil behaviour. These insights are critical for geotechnical engineering applications, offering a nuanced understanding of soil properties and their interactions. |
