National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, China.
School of Fisheries, Zhejiang Ocean University, Zhoushan, 316022, China.
Sci Rep. 2021 Oct 13;11(1):20321. doi: 10.1038/s41598-021-99817-5.
Anchor piles are widely used in marine aquaculture, and the safety is largely determined by the uplift resistance capacity,especially in harsh ocean environments. However, there are few practical guides to the design and installation of the anchor piles for mooring the body of marine aquaculture equipment. Laboratory experiments were conducted to investigate the effect of the initial tension angle, pile diameter, embedded depth, and pile configuration on the uplift resistance capacity of anchor piles under oblique loads. CCD camera and load cell were utilized to measure the corresponding displacement and load, respectively. The results show that increasing the initial tension angle of circular and square single piles can significantly improve the uplift resistance capacity. The failure load of the square single pile was slightly higher than that of the circular single pile. Increasing the pile diameter can effectively improve the failure load and delay the development speed of the pile top displacement. Increasing the embedded depth can effectively improve the failure load and increase the lateral displacement of the pile top. The uplift resistance capacity of the dual anchor piles was better than that of the single anchor piles. The layout configuration has little effect on the failure load, but has a large effect on the displacement development.
锚桩在海洋水产养殖中应用广泛，其安全性在很大程度上取决于抗拔承载力，尤其是在恶劣的海洋环境中。然而，对于海洋水产养殖设备系泊用锚桩的设计和安装，目前还缺乏实用的指南。本研究通过实验室试验，研究了在斜向荷载作用下初始张力角、桩径、埋深和桩型对锚桩抗拔承载力的影响。利用 CCD 相机和测力传感器分别测量相应的位移和荷载。结果表明，增加圆形和方形单桩的初始张力角可以显著提高抗拔承载力。方形单桩的破坏荷载略高于圆形单桩。增加桩径可以有效地提高破坏荷载，并延缓桩顶位移的发展速度。增加埋深可以有效地提高破坏荷载，并增加桩顶的侧向位移。双锚桩的抗拔承载力优于单锚桩。布置形式对破坏荷载影响较小，但对位移发展影响较大。
