ESTIMATION AND COUNTERMEASURE ON ABRASION OF OFFSHORE STRUCTURE MADE OF CONCRETE DUE TO SEA ICE MOVEMENT

Takahiro TAKEUCHI; Naoki NAKAZAWA; Takashi MIKAMI; Yasunori WATANABE; Hiroshi SAEKI

doi:10.2208/prooe.20.1223

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN

Online ISSN : 1884-8265
Print ISSN : 0912-7348
ISSN-L : 0912-7348

ESTIMATION AND COUNTERMEASURE ON ABRASION OF OFFSHORE STRUCTURE MADE OF CONCRETE DUE TO SEA ICE MOVEMENT

Takahiro TAKEUCHI, Naoki NAKAZAWA, Takashi MIKAMI, Yasunori WATANABE, Hiroshi SAEKI

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Keywords: abrasion, offshore structure, sea ice

JOURNAL FREE ACCESS

2004 Volume 20 Pages 1223-1227

DOI https://doi.org/10.2208/prooe.20.1223

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Abstract

Offshore structure made of concrete in ice-covered sea areas is likely to meet an abrasion due to sea ice movement, and needs to be a light weight because of long carriage for its installation. Therefore, it is necessary to determine the thickness of covered concrete with high accuracy. The method to estimate an amount and area of abrasion is shown in considering both local ice pressure distribution and change of water level due to tide. The way to reduce the abrasion is also proposed.

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