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Analytical study on comprehensive behaviors of drag anchors in the seabed
Highlights Comprehensive anchor behaviors including keying, diving and pulling out are theoretically analyzed. Anchor trajectory and pullout capacity both in clay and in sand can be easily predicted. Efficiency and veracity of the novel model are validated by comparative studies. Further knowledge of anchor behaviors are gained through parametric studies.
Abstract Attributed to good performance in the seabed, drag anchors are adopted as an effective anchoring solution in deepwater mooring systems. This type of anchors is drag installed, companying with comprehensive behaviors during movement of the anchor in the seabed, which make the anchor trajectory and therefore the final embedment position difficult to be predicted. On the basis of the mechanical model and analytical procedure, an analytical method is proposed for exploring comprehensive behaviors of drag anchors in both clay and sand. The anchor behaviors are classified as keying, pulling out and diving. The bearing capacity and the trajectory of the anchor can be predicted through the combination of the three behaviors. By comparing analytical predictions with experimental data and other predictions, the efficiency and veracity of the theoretical model are validated. A parametric study is also performed to investigate the effects of different parameters, and to further understand the comprehensive anchor behaviors in the seabed. The present work provides an efficient theoretical tool for analyzing comprehensive behaviors of drag anchors in either clayey or sandy seabed.
Analytical study on comprehensive behaviors of drag anchors in the seabed
Highlights Comprehensive anchor behaviors including keying, diving and pulling out are theoretically analyzed. Anchor trajectory and pullout capacity both in clay and in sand can be easily predicted. Efficiency and veracity of the novel model are validated by comparative studies. Further knowledge of anchor behaviors are gained through parametric studies.
Abstract Attributed to good performance in the seabed, drag anchors are adopted as an effective anchoring solution in deepwater mooring systems. This type of anchors is drag installed, companying with comprehensive behaviors during movement of the anchor in the seabed, which make the anchor trajectory and therefore the final embedment position difficult to be predicted. On the basis of the mechanical model and analytical procedure, an analytical method is proposed for exploring comprehensive behaviors of drag anchors in both clay and sand. The anchor behaviors are classified as keying, pulling out and diving. The bearing capacity and the trajectory of the anchor can be predicted through the combination of the three behaviors. By comparing analytical predictions with experimental data and other predictions, the efficiency and veracity of the theoretical model are validated. A parametric study is also performed to investigate the effects of different parameters, and to further understand the comprehensive anchor behaviors in the seabed. The present work provides an efficient theoretical tool for analyzing comprehensive behaviors of drag anchors in either clayey or sandy seabed.
Analytical study on comprehensive behaviors of drag anchors in the seabed
Peng, Jinsong (Autor:in) / Liu, Haixiao (Autor:in)
14.06.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Drag anchor , Trajectory , Bearing capacity , Diving , Pulling out , Keying , Clay , Sand
Movement direction of drag anchors in seabed soils
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Movement direction of drag anchors in seabed soils
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Mechanics of Drag Embedment Anchors in a Soft Seabed
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Mechanics of Drag Embedment Anchors in a Soft Seabed
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