Mechanism of Phase-Locked Ice Crushing against Offshore Structures

被引：1

作者：

Wang, Bin ^{[1
,2
]}

Gao, Shan ^{[1
,2
]}

Qu, Yan ^{[3
]}

Yin, Haoyang ^{[3
]}

Chuang, Zhenju ^{[4
]}

机构：

[1] Key Lab Far Shore Wind Power Technol Zhejiang Prov, Hangzhou 311122, Peoples R China

[2] Powerchina Huadong Engn Corp Ltd, Hangzhou 311122, Peoples R China

[3] South China Univ Technol, Sch Marine Sci & Engn, Int Campus, Guangzhou 511442, Peoples R China

[4] Dalian Maritime Univ, Naval Arichitecture & Ocean Engn Coll, Dalian 116026, Peoples R China

来源：

JOURNAL OF MARINE SCIENCE AND ENGINEERING | 2023年 / 11卷 / 04期

基金：

中国国家自然科学基金;

关键词：

phase-locked ice crushing; frequency lock-in vibration; vertical structures; ductile damage-collapse failure; saw teeth ice force; failure length; VIBRATIONS; MOLIKPAQ;

D O I：

10.3390/jmse11040868

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

This paper addresses a detailed analysis of the ice-structure interaction process of the phase-locked ice crushing (PLC) against offshore structures. Directly measured ice load, structure response data, and in situ observation from the field measurements on the Molikpaq lighthouse and jacket platform were used in the study. This paper summarizes a new ductile damage-collapse (DDC) failure mechanism for the PLC process. The DDC mechanism shows that the ice failure is a discrete ductile crushing process rather than a ductile-brittle transition process. The analysis identifies that the ice has a failure length in PLC and this failure length plays an important role in understanding the interaction. It reveals that PLC can occur on most vertical-sided offshore structures when the velocity of the ice sheet falls within the range of the failure length divided by the natural period of the structure. This paper proposes that this relationship between ice failure length and the natural period of the structure can be used as one of the PLC occurrence conditions. The DDC failure mechanism provides a basis for another technical route to solve the PLC problem.

引用

页数：13

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