不同土质条件下大抓力锚的落锚深度研究

摘要

为了保护海底电缆免受船舶拖锚的破坏,针对工程船舶常用的大抓力锚开展了不同土质条件中的下落深度研究.基于砂土和黏土中的室内模型试验运用能量法建立了船锚落深的理论算法;开展了数值模拟分析,研究锚入土后的运动规律.理论及数值分析结果和现场实测结果相吻合,验证了本文提出的理论算法和采用的数值模拟方法具有可靠性.%In order to prevent the dragging anchors from submarine cable, the penetration depth of high holding power anchors used by engineering vessels is studied under different soil conditions. Based on the indoor model test of sandy soil and clayey soil, the energy method has been used to establish a theoretical formula for the penetrating depth of anchors. In addition, the numerical simulation analysis has been applied in the study of the motion rule of anchors penetrating into soil. The theoretical and numerical analysis results accord with the real-measured data, so the above theoretical algorithm and numerical simulation are verified reliable.