The University of Southampton
University of Southampton Institutional Repository

Capacity of dynamically embedded plate anchors as assessed through field tests

Capacity of dynamically embedded plate anchors as assessed through field tests
Capacity of dynamically embedded plate anchors as assessed through field tests
A dynamically embedded plate anchor (DEPLA) is a rocket-shaped anchor that penetrates to a target depth in the seabed by the kinetic energy obtained through free-fall and by the anchor’s self-weight. After embedment, the central shaft is retrieved leaving the anchor flukes vertically embedded in the seabed. The flukes constitute the load bearing element as a plate anchor. This paper presents and considers field data on the embedment depth loss due to the plate anchor keying process and the subsequent bearing capacity factor of the plate anchor element. The loss in plate anchor embedment was significantly higher than that reported from corresponding centrifuge tests and is reflected in the larger padeye displacements required to mobilize peak capacity in the field tests. Measured plate capacities and plate rotations during keying indicate that the end of keying coincides with the peak anchor capacity. Experimental bearing capacity factors are in the range Nc = 14.3–14.6, which is appreciably higher than existing solutions for vanishingly thin circular plates. The higher Nc for the DEPLA is considered to be due to a combination of the cruciform fluke arrangement and the fluke (or plate) thickness.
0008-3674
87-95
Blake, A.P.
e0438bea-cfc4-4373-b100-8b9768ddc56f
O’Loughlin, C.D.
383cd471-d629-48b7-86c5-54ac583806d7
Gaudin, C.
4d1197f0-7c69-4301-8877-33f840784685
Blake, A.P.
e0438bea-cfc4-4373-b100-8b9768ddc56f
O’Loughlin, C.D.
383cd471-d629-48b7-86c5-54ac583806d7
Gaudin, C.
4d1197f0-7c69-4301-8877-33f840784685

Blake, A.P., O’Loughlin, C.D. and Gaudin, C. (2015) Capacity of dynamically embedded plate anchors as assessed through field tests. Canadian Geotechnical Journal, 52 (1), 87-95. (doi:10.1139/cgj-2013-0473).

Record type: Article

Abstract

A dynamically embedded plate anchor (DEPLA) is a rocket-shaped anchor that penetrates to a target depth in the seabed by the kinetic energy obtained through free-fall and by the anchor’s self-weight. After embedment, the central shaft is retrieved leaving the anchor flukes vertically embedded in the seabed. The flukes constitute the load bearing element as a plate anchor. This paper presents and considers field data on the embedment depth loss due to the plate anchor keying process and the subsequent bearing capacity factor of the plate anchor element. The loss in plate anchor embedment was significantly higher than that reported from corresponding centrifuge tests and is reflected in the larger padeye displacements required to mobilize peak capacity in the field tests. Measured plate capacities and plate rotations during keying indicate that the end of keying coincides with the peak anchor capacity. Experimental bearing capacity factors are in the range Nc = 14.3–14.6, which is appreciably higher than existing solutions for vanishingly thin circular plates. The higher Nc for the DEPLA is considered to be due to a combination of the cruciform fluke arrangement and the fluke (or plate) thickness.

Full text not available from this repository.

More information

Accepted/In Press date: 3 July 2014
e-pub ahead of print date: 7 July 2014
Published date: 2015
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 403623
URI: https://eprints.soton.ac.uk/id/eprint/403623
ISSN: 0008-3674
PURE UUID: 67567d82-8b28-4e25-a1ab-ded8d7c71fc7

Catalogue record

Date deposited: 06 Dec 2016 14:21
Last modified: 15 Jul 2019 19:51

Export record

Altmetrics

Contributors

Author: A.P. Blake
Author: C.D. O’Loughlin
Author: C. Gaudin

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×