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http://dx.doi.org/10.7734/COSEIK.2020.33.5.287

Evaluation of Structural Response of Cylindrical Structures Based on 2D Wave-Tank Test Due to Wave Impact  

Lee, Kangsu (Korea Research Institute of Ships & Ocean Engineering)
Ha, Yoon-Jin (Korea Research Institute of Ships & Ocean Engineering)
Nam, Bo Woo (Department of Naval Architecture & Ocean Engineering, Seoul National University)
Kim, Kyong-Hwan (Korea Research Institute of Ships & Ocean Engineering)
Hong, Sa Young (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.5, 2020 , pp. 287-296 More about this Journal
Abstract
The wave-impact load on offshore structures can be divided into green-water and wave-slamming impact loads. These wave impact loads are known to have strong nonlinear characteristics. Although the wave impact loads are dealt with in the current classification rules in the shipping industry, their strong nonlinear characteristics are not considered in detail. Therefore, to investigate these characteristics, wave-impact loads induced by a breaking wave on a circular cylinder were analyzed. A model test was carried out to measure the wave-impact loads due to breaking waves in a two-dimensional (2D) wave tank. To generate a breaking wave, the focusing wave method was applied. A series of 2D tank tests under a horizontal wave impact was carried out to investigate the structural responses of the cylindrical structure, which were obtained from the measured model test data. According to the results, we proposed a structural damage-estimation procedure of an offshore tubular member due to a wave impact load. Furthermore, a recommended wave-impact load is suggested that considers the minimum required thickness of each member. From the experimental results, we found that the required minimum thickness is dependent on the impact pressure located in a three-dimensional space on the surface of a tubular member.
Keywords
wave impact; 2D wave tank test; cylindrical structure; structural response; structural damage;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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