Predictions of Ice scour loads and rate effect evaluation from small scale LG tests

S. Arnau; A. Ivanović

Predictions of Ice scour loads and rate effect evaluation from small scale LG tests

S. Arnau, A. Ivanović

Engineering

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

1 Citation (Scopus)

Abstract

Ice scouring the seabed has been investigated by means of reduced scale physical model testing. The aim of this study is focused on the prediction of ice scour loads on a cohesionless seabed in saturated conditions. The influence of different soil parameters such as permeability and relative density have been studied over a range of scouring depths, widths and drifting velocities of an iceberg in the laboratory under lg conditions. The effect of the drifting speed of an iceberg on the drag force was found to be rather important: an iceberg scouring the seabed with a mean drifting speed of 0.1 m/s can generate scour loads twice as big as the static loads. The methods used today to predict ice scour loads only consider the static loads, assuming drained conditions, and they should be revised as unrealistic loads can be obtained.

Original language	English
Title of host publication	RINA, Royal Institution of Naval Architects - ICSOT Korea
Subtitle of host publication	Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015, Papers
Publisher	Royal Institution of Naval Architects
Pages	89-95
Number of pages	7
ISBN (Electronic)	9781909024441
Publication status	Published - 2015
Event	International Conference on ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015 - Busan, Korea, Republic of Duration: 15 Sept 2015 → 16 Sept 2015

Conference

Conference	International Conference on ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015
Country/Territory	Korea, Republic of
City	Busan
Period	15/09/15 → 16/09/15

Bibliographical note

This work was supported by ClassNK Joint R&D for Industry Program, and carried out jointly by Pusan National University, STX Offshore & Shipbuilding Co., Ltd. and ClassNK as "Limit States Design of Type B Independent LNG Cargo Tanks". It was also supported by Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & future Planning (MSIP) (Grant No. 2014040731). This study was undertaken at The Lloyd's Register Foundation Research Centre of Excellence at Pusan National University. Lloyd's Register Foundation (LRF), a UK registered charity and sole shareholder of Lloyd s Register Group, Ltd, invests in science, engineering and technology for public benefit, worldwide.

Cite this

Predictions of Ice scour loads and rate effect evaluation from small scale LG tests. / Arnau, S.; Ivanović, A.
RINA, Royal Institution of Naval Architects - ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015, Papers. Royal Institution of Naval Architects, 2015. p. 89-95.

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Arnau, S & Ivanović, A 2015, Predictions of Ice scour loads and rate effect evaluation from small scale LG tests. in RINA, Royal Institution of Naval Architects - ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015, Papers. Royal Institution of Naval Architects, pp. 89-95, International Conference on ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015, Busan, Korea, Republic of, 15/09/15.

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title = "Predictions of Ice scour loads and rate effect evaluation from small scale LG tests",

abstract = "Ice scouring the seabed has been investigated by means of reduced scale physical model testing. The aim of this study is focused on the prediction of ice scour loads on a cohesionless seabed in saturated conditions. The influence of different soil parameters such as permeability and relative density have been studied over a range of scouring depths, widths and drifting velocities of an iceberg in the laboratory under lg conditions. The effect of the drifting speed of an iceberg on the drag force was found to be rather important: an iceberg scouring the seabed with a mean drifting speed of 0.1 m/s can generate scour loads twice as big as the static loads. The methods used today to predict ice scour loads only consider the static loads, assuming drained conditions, and they should be revised as unrealistic loads can be obtained.",

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note = "This work was supported by ClassNK Joint R&D for Industry Program, and carried out jointly by Pusan National University, STX Offshore & Shipbuilding Co., Ltd. and ClassNK as {"}Limit States Design of Type B Independent LNG Cargo Tanks{"}. It was also supported by Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & future Planning (MSIP) (Grant No. 2014040731). This study was undertaken at The Lloyd's Register Foundation Research Centre of Excellence at Pusan National University. Lloyd's Register Foundation (LRF), a UK registered charity and sole shareholder of Lloyd s Register Group, Ltd, invests in science, engineering and technology for public benefit, worldwide. ; International Conference on ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015 ; Conference date: 15-09-2015 Through 16-09-2015",

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N2 - Ice scouring the seabed has been investigated by means of reduced scale physical model testing. The aim of this study is focused on the prediction of ice scour loads on a cohesionless seabed in saturated conditions. The influence of different soil parameters such as permeability and relative density have been studied over a range of scouring depths, widths and drifting velocities of an iceberg in the laboratory under lg conditions. The effect of the drifting speed of an iceberg on the drag force was found to be rather important: an iceberg scouring the seabed with a mean drifting speed of 0.1 m/s can generate scour loads twice as big as the static loads. The methods used today to predict ice scour loads only consider the static loads, assuming drained conditions, and they should be revised as unrealistic loads can be obtained.

AB - Ice scouring the seabed has been investigated by means of reduced scale physical model testing. The aim of this study is focused on the prediction of ice scour loads on a cohesionless seabed in saturated conditions. The influence of different soil parameters such as permeability and relative density have been studied over a range of scouring depths, widths and drifting velocities of an iceberg in the laboratory under lg conditions. The effect of the drifting speed of an iceberg on the drag force was found to be rather important: an iceberg scouring the seabed with a mean drifting speed of 0.1 m/s can generate scour loads twice as big as the static loads. The methods used today to predict ice scour loads only consider the static loads, assuming drained conditions, and they should be revised as unrealistic loads can be obtained.

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M3 - Published conference contribution

AN - SCOPUS:84976422107

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EP - 95

BT - RINA, Royal Institution of Naval Architects - ICSOT Korea

PB - Royal Institution of Naval Architects

T2 - International Conference on ICSOT Korea: Safety of Offshore and Subsea Structures in Extreme and Accidental Conditions 2015

Y2 - 15 September 2015 through 16 September 2015

ER -

Predictions of Ice scour loads and rate effect evaluation from small scale LG tests

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