Development of an ice shield for offshore concrete structures

海上混凝土结构防冰罩的开发

• 批准号: 479481-2015
• 负责人: Marzouk, Hesham
• 金额: $ 1.82万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=580095
• 关键词: Development; ice; shield; offshore; concrete

The design of Gravity Based Structure (GBS) concrete has been very successful in hostile areas of the Atlantic Ocean and sub-Artic projects such as Hibernia (1997) on the east coast of Canada and Sakhalin Russian island (2005). However, the recent experience for the sub-Artic platforms indicated a definite need for concrete repair and the development of an ice shield protection for the GBS. The development of Ultra High Performance Concrete (UHPC) is deemed as one of the most promising technological advances in material applications suitable for structural Engineering. UHPC exhibits exceptional mechanical and durability properties. It is almost self-placing. The new material is used for different parts on the roof, base slab of the new Hebron GBS. UHPC has an excellent resistance to spalling, scabbing, and fragmentation, making it an ideal material for wave forces and sea ice for the splash zone. The new material is very well used for offshore wind turbine structures foundation under high moment and shear forces. An UHPC ice shield will be developed in collaboration with Maderra Engineering for offshore application. The performance of the UHPC under high strain rate response will be investigated. Cracking, tension and reinforcement ratio of UHPC are important factors in designing any reinforced structure under various kinds of loading. Compressive and flexural tensile strengths of UHPC will be investigated to evaluate the Dynamic Increase Factor (DIF).The structural behavior of UHPC plate under dynamic low speed impact will be investigated experimentally and numerically using variety of steel reinforcement ratio for offshore applications.The successful development of the UHPC plate shield will lead to further research collaboration, since Maderra is currently involved in other research projects related to subsea shield protection for oil and gas equipment.

重力基础结构（GBS）混凝土的设计在大西洋和亚北极的恶劣地区非常成功，如加拿大东海岸的Hibernia（1997）和俄罗斯萨哈林岛（2005）。然而，亚北极平台最近的经验表明，明确需要混凝土修复和为GBS开发冰盖保护。