| Autor: |
Jiang, Yuenan, Xu, Chengcheng, Shao, Suola |
| Zdroj: |
Arabian Journal of Geosciences; Aug2022, Vol. 15 Issue 16, p1-14, 14p |
| Abstrakt: |
Based on the principle of the top-pressing pile driver, a self-designed indoor model device is proposed to investigate the interface effect of piling pressure. The experiments are conducted to examine the effects of the pile diameter and the soil layers on the leading and lagging depths of the pile tip. Meanwhile, to test the interface effect in the sandy soil with different strengths, a numerical model of particle flow is developed based on the discrete element method. The soil displacement and tip resistance in the layer of upper soft, lower hard and the layer of upper hard, lower soft are obtained in the model. Then, the range of the plastic zone at the pile tip is deduced through the logarithmic spiral rule, and the interface effect in layered soil is analytically examined. Finally, the leading and lagging depth will be discussed theoretically. The proposed methodology and the conclusions can guide the mechanism of jacked pile driving and the optimum design of pile foundation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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