The University of Southampton
University of Southampton Institutional Repository

Installation of dynamically embedded plate anchors as assessed through field tests

Installation of dynamically embedded plate anchors as assessed through field tests
Installation of dynamically embedded plate anchors as assessed through field tests
A dynamically embedded plate anchor (DEPLA) is a rocket-shaped anchor that comprises a removable central shaft and a set of four flukes. The DEPLA penetrates to a target depth in the seabed by the kinetic energy obtained through free-fall in water. 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 focuses on the dynamic installation of the DEPLA. Net resistance and velocity profiles are derived from acceleration data measured by an inertial measurement unit during DEPLA field tests, which are compared with corresponding theoretical profiles based on strain rate–enhanced shear resistance and fluid mechanics drag resistance. Comparison of the measured net resistance force profiles with the model predictions shows fair agreement at 1:12 scale and good agreement at 1:7.2 and 1:4.5 scales. For all scales the embedment model predicts the final anchor embedment depth to a high degree of accuracy.
0008-3674
1270-1282
Blake, A.P.
e0438bea-cfc4-4373-b100-8b9768ddc56f
O’Loughlin, C.D.
383cd471-d629-48b7-86c5-54ac583806d7
Blake, A.P.
e0438bea-cfc4-4373-b100-8b9768ddc56f
O’Loughlin, C.D.
383cd471-d629-48b7-86c5-54ac583806d7

Blake, A.P. and O’Loughlin, C.D. (2015) Installation of dynamically embedded plate anchors as assessed through field tests. Canadian Geotechnical Journal, 52 (9), 1270-1282. (doi:10.1139/cgj-2014-0327).

Record type: Article

Abstract

A dynamically embedded plate anchor (DEPLA) is a rocket-shaped anchor that comprises a removable central shaft and a set of four flukes. The DEPLA penetrates to a target depth in the seabed by the kinetic energy obtained through free-fall in water. 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 focuses on the dynamic installation of the DEPLA. Net resistance and velocity profiles are derived from acceleration data measured by an inertial measurement unit during DEPLA field tests, which are compared with corresponding theoretical profiles based on strain rate–enhanced shear resistance and fluid mechanics drag resistance. Comparison of the measured net resistance force profiles with the model predictions shows fair agreement at 1:12 scale and good agreement at 1:7.2 and 1:4.5 scales. For all scales the embedment model predicts the final anchor embedment depth to a high degree of accuracy.

Full text not available from this repository.

More information

Accepted/In Press date: 18 January 2015
Published date: 30 January 2015
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 403624
URI: https://eprints.soton.ac.uk/id/eprint/403624
ISSN: 0008-3674
PURE UUID: 65dc9f5d-2001-48c7-91bb-a7d9300f5abf

Catalogue record

Date deposited: 06 Dec 2016 14:16
Last modified: 17 Jul 2017 17:41

Export record

Altmetrics

Contributors

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

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.

×