Chapter
Jul 11, 2017
Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
The Effect of a Dragging Anchor on a Horizontal Layer of Rockfill: A Prototype and a Scale Model Test
Authors: S. Crum [email protected], M. L. E. B. van der Hoeven [email protected], L. P. H. C. Krouwel [email protected], and H. J. Verhagen [email protected]Author Affiliations
Publication: Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
Abstract
Quantifying the penetration depth of a dragging anchor on a horizontal layer of rockfill provides the possibility to optimize the layer thickness of rockfill layers with a protective function. Current research on this subject is limited and is often aimed at anchor capacities in sand and clay. Penetration behaviour in rockfill is mainly investigated for protections with a limited width. Anchor dragging tests carried out for a canal expansion project show that as the rock size increases, the penetration depth and the holding capacity of the anchor decrease. A semi-empirical prediction formula is derived. An additional series of scaled down tests shows that the process of anchor drag in rockfill is scalable, as long as all aspects of the trial design are taken into account. This provides possibilities for accessible further research, expanding on the prediction of penetration depth and further anchor behaviour in different types of rockfill.
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References
(2010). Anchor Manual. Vryhof Anchors. The Guide to Anchoring.
API (1996). Recommended practice for design and analysis of stationkeeping systems for floating structures. Technical report, American Petroleum Institute Exploration and Production Department.
Crum, S. (2015). The effect of a dragging anchor on a horizontal layer of rock-fill. Technical report, Delft University of Technology, De Vries and van de Wiel. http://resolver.tudelft.n1/uuid:0fl4aa4d-efe5-4c3f-8086-ad876f3e0025.
Information & Authors
Information
Published In
Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
Pages: 469 - 481
Editors: Louise Wallendorf, U.S. Naval Academy and Daniel T. Cox, Ph.D., Oregon State University
ISBN (Online): 978-0-7844-8030-4
Copyright
© 2017 American Society of Civil Engineers.
History
Published online: Jul 11, 2017
Published in print: Jul 11, 2017
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Authors
Affiliations
De Vries & van de Wiel; Research & Development Engineer. E-mail: [email protected]
DEME; Senior Coastal Engineer. E-mail: [email protected]
Arcadis; Senior Hydraulic Engineer. E-mail: [email protected]
TUDelft; Associate Professor in Hydraulic Engineering. E-mail: [email protected]
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