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<p>Torpedo anchors, a new type of deep-sea anchoring foundation, fall freely under gravity and penetrate into the seabed at high velocities. Torpedo anchors have the characteristics of high installation efficiency, low cost, and high reliability. In this study, we conduct torpedo anchor penetration model tests to study the dynamic penetration process of torpedo anchors and to analyze the change laws between the penetration acceleration and time, between the penetration depth and acceleration, and between the penetration depth and velocity. The test results show that the peak acceleration of a torpedo anchor occurs at the moment of penetration into the soil. When the relative compactness of the soil is constant, the peak acceleration and the final penetration depth of the torpedo anchor increase with increasing initial penetration velocity. When the initial penetration velocity is constant, the penetration time and the final penetration depth of the torpedo anchor decrease with increasing relative compactness of the soil. The penetration acceleration of the torpedo anchor decreases with increasing penetration depth. When the initial acceleration is constant, the final penetration depth of the torpedo anchor decreases with increasing relative compactness. The above findings can provide a reference and guidance for the design and installation of torpedo anchors.</p>

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Experimental Study on the Penetration of Torpedo Anchors Into Saturated Sand Seabeds

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • Gang Li,
  • Jinli Zhang,
  • Jia Liu

摘要

Torpedo anchors, a new type of deep-sea anchoring foundation, fall freely under gravity and penetrate into the seabed at high velocities. Torpedo anchors have the characteristics of high installation efficiency, low cost, and high reliability. In this study, we conduct torpedo anchor penetration model tests to study the dynamic penetration process of torpedo anchors and to analyze the change laws between the penetration acceleration and time, between the penetration depth and acceleration, and between the penetration depth and velocity. The test results show that the peak acceleration of a torpedo anchor occurs at the moment of penetration into the soil. When the relative compactness of the soil is constant, the peak acceleration and the final penetration depth of the torpedo anchor increase with increasing initial penetration velocity. When the initial penetration velocity is constant, the penetration time and the final penetration depth of the torpedo anchor decrease with increasing relative compactness of the soil. The penetration acceleration of the torpedo anchor decreases with increasing penetration depth. When the initial acceleration is constant, the final penetration depth of the torpedo anchor decreases with increasing relative compactness. The above findings can provide a reference and guidance for the design and installation of torpedo anchors.