Recent Advances in Dynamic Centrifuge Testing
Volume Title: ICASGE2025
Paper ID : 1035-ICASGE-FULL (R1)
Authors
New York University Abu Dhabi
Abstract
Recent advances in dynamic centrifuge modeling have enabled researchers to investigate soil behavior under various loading conditions. This paper discusses two dynamic geotechnical challenges that were investigated by means of centrifuge model testing. The two challenges investigated were the effect of seismic preshaking history and the influence of high overburden pressure on the liquefaction potential of sandy deposits. Centrifuge experiments were conducted on clean and silty sand to investigate these challenges. For the first challenge, it was found that seismic preshaking can have a significant effect on the liquefaction potential of sandy deposits. This effect can be positive or negative depending on the intensity of previous preshaking events. For the second challenge, it was found that the increase in overburden pressure can significantly increase the drainage potential of sandy deposits, making them less vulnerable to liquefaction than what was originally thought. These centrifuge modeling techniques provide valuable insight into the complex behavior of soils under dynamic loading conditions, enabling engineers and researchers to develop more accurate assessments of liquefaction potential and improve the resilience of geotechnical systems. The use of centrifuge modeling remains essential in advancing the understanding of soil behavior and mitigating the risk of liquefaction-induced damage.
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