Stability Assessment Formulas for an Interlocking Caisson Breakwater under Oblique Wave Conditions SCIE SCOPUS

Cited 3 time in WEB OF SCIENCE Cited 3 time in Scopus
Title
Stability Assessment Formulas for an Interlocking Caisson Breakwater under Oblique Wave Conditions
Author(s)
Park, Woo-Sun; Won, Deokhee; Seo, Jihye; Lee, Byeong Wook
KIOST Author(s)
Park, Woo Sun(박우선)Won, Deok Hee(원덕희)Seo, Ji Hye(서지혜)
Publication Year
2018-05
Abstract
As a countermeasure for improving the stability of conventional caisson breakwaters, a method has been proposed in which adjacent caissons are interlocked with each other to consecutively resist the abnormal wave forces. It is not possible to reasonably evaluate the stability of breakwaters that have been elongated by interlocking, especially for oblique waves, by using the current design criterion defined for breakwater sections. Therefore, it was studied the stability assessment formula of an interlocking caisson breakwater under oblique wave conditions, in this study. To maintain consistency in checking the stability, it was introduced a reduction factor which is defined as the ratio of the expected maximum force for an oblique wave to that for a perpendicular wave. Using the linear wave theory, the expected maximum force was calculated considering the effect of the phase difference of hydrodynamic pressures along a breakwater. On the other hand, Goda's pressure formula was adopted as a design pressure distribution in the vertical direction to consider nonlinearities and randomness of the design wave, reasonably. Based on these assumptions, safety assessment formulas of the breakwater were developed considering the phase effect between the horizontal and uplift forces. Numerical calculations show that the proposed assessment formula for the interlocking caisson breakwater gives reasonable results, i.e., the estimated stability increases, as the wave attack angle increases. To judge the validity of the results, indirectly, the stabilities were estimated for regular and irregular wave conditions, and the results were compared each other.
ISSN
0749-0208
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/923
DOI
10.2112/SI85-248.1
Bibliographic Citation
JOURNAL OF COASTAL RESEARCH, pp.1236 - 1240, 2018
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Keywords
Interlocking; caisson breakwater; oblique wave; stability; force reduction
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

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