Comparison of 1g and centrifuge modelling of drag embedment anchors with subsurface wireless tracking

TY - JOUR

T1 - Comparison of 1g and centrifuge modelling of drag embedment anchors with subsurface wireless tracking

AU - Sharif, Yaseen

AU - Brown, Michael

AU - Knappett, Jonathan

AU - Davidson, Craig

AU - Bird, Robert E.

AU - Coombs, William M.

AU - Augarde, Charles

AU - Carter, Gareth

AU - Macdonald, Catriona

AU - Johnson, Kirstin

N1 - Publisher Copyright: © 2024 Emerald Publishing Limited: All rights reserved.

PY - 2024/12/11

Y1 - 2024/12/11

N2 - The kinematic behaviour of drag embedment anchors has become a recent research focus due to the increase in offshore renewable energy devices. This is due to their potential use as an anchoring system for future floating wind applications, in addition to the need to understand their penetration behaviour as a part of the cable burial risk assessment (CBRA). Studies on the behaviour of anchors typically consist of field scale or model centrifuge tests, where such facilities are not readily available to all and can result in significant cost. In addition to this, measuring the load-penetration behaviour of an anchor has proven to be a significant challenge, as any contact-based methods are likely to influence the penetration behaviour of the anchor. In this paper a novel wireless method of recording the inclination of the anchor and calculating the penetration depth is presented. A comparison of the penetration behaviour of a Class F (AC-14) anchor has been investigated in sand using centrifuge and 1-g model scale testing. The results indicate that the 1-g testing can match the behaviour of the anchor testing in the centrifuge in terms of both the position of the anchor and its orientation during the dragging event.

AB - The kinematic behaviour of drag embedment anchors has become a recent research focus due to the increase in offshore renewable energy devices. This is due to their potential use as an anchoring system for future floating wind applications, in addition to the need to understand their penetration behaviour as a part of the cable burial risk assessment (CBRA). Studies on the behaviour of anchors typically consist of field scale or model centrifuge tests, where such facilities are not readily available to all and can result in significant cost. In addition to this, measuring the load-penetration behaviour of an anchor has proven to be a significant challenge, as any contact-based methods are likely to influence the penetration behaviour of the anchor. In this paper a novel wireless method of recording the inclination of the anchor and calculating the penetration depth is presented. A comparison of the penetration behaviour of a Class F (AC-14) anchor has been investigated in sand using centrifuge and 1-g model scale testing. The results indicate that the 1-g testing can match the behaviour of the anchor testing in the centrifuge in terms of both the position of the anchor and its orientation during the dragging event.

KW - drag embedment anchors

KW - anchor tracking

KW - Cable Burial Risk Assessment

KW - sand

KW - centrifuge modeling

KW - centrifuge modelling

KW - instrumentation

UR - https://www.scopus.com/pages/publications/86000435747

U2 - 10.1680/jphmg.24.00029

DO - 10.1680/jphmg.24.00029

M3 - Article

SN - 1346-213X

VL - 25

SP - 102

EP - 114

JO - International Journal of Physical Modelling in Geotechnics

JF - International Journal of Physical Modelling in Geotechnics

IS - 2

ER -