| Abstract: |
This study examines the comparative accuracy of different analytical approaches in pile test evaluation, focusing on static load testing (SLT) and dynamic load testing (DLT) methodologies. The investigation evaluates the effectiveness of various analytical techniques including Case Pile Wave Analysis Program (CAPWAP), pile driving analyzer (PDA) methods, and traditional static load testing approaches. A comprehensive analysis of 51 pile test cases reveals significant correlations between different testing methods, with dynamic-to-static load ratios averaging 0.9833. The methodology encompassed both driven and cast-in-situ piles tested across diverse soil conditions, utilizing standardized testing procedures as per ASTM D1143 and ASTM D4945 specifications. Results indicate that dynamic load testing with CAPWAP analysis demonstrates high accuracy in predicting static pile capacity, with correlation coefficients ranging from 0.77 to 0.92 depending on soil conditions and pile types. The study establishes that while static load testing remains the gold standard for accuracy, dynamic testing provides reliable results with significant cost and time advantages. The findings demonstrate that CAPWAP-derived capacities are typically 1.06 to 1.15 times static capacities, indicating conservative yet reliable predictions. These results contribute to optimizing pile testing strategies by providing engineers with validated correlation factors for different analytical approaches, thereby improving foundation design efficiency while maintaining safety standards in geotechnical engineering practice |
