Review of recent research and developments on floating breakwaters

Dai, Jian; Wang, Chen; Utsunomiya, Tomoaki; Duan, Wenhui

doi:10.1016/j.oceaneng.2018.03.083

Cited by 184 publications

(62 citation statements)

References 45 publications

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“…There are several types of floating breakwaters available at the market, which primarily differ in their shape and the physical mechanism(s) responsible for the wave attenuation [10]. In the cases with long waves, floating breakwaters are found to be relatively inefficient in comparison to their bottom mounted counterparts.…”

Section: Overview Of the Floating Breakwater Designsmentioning

confidence: 99%

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Dynamic Analysis of an Array of Connected Floating Breakwaters

Ćatipović

Ćorak

Alujević

et al. 2019

JMSE

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In this paper, a model for dynamic analysis of array of floating breakwaters is developed and tested. Special attention is given to modeling connections between neighboring elements of the array. A linear three-dimensional floating multi-body formulation is used as a foundation for the presented model. An additional stiffness matrix is derived which introduces the influence of the connections onto motion of the array. The stiffness matrix is used to couple motions in vertical and horizontal planes i.e., the connections are modeled in three-dimensions. The equation of motion is solved in the frequency domain. The newly developed model is tested on an array of three connected breakwaters. The motion and the performance of the breakwater array are investigated under different significant heights and directions of the incoming waves.

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Section: Overview Of the Floating Breakwater Designsmentioning

confidence: 99%

“…Overall, seven main types can be found in the literature [11], which are shortly described in the following text. Graphical schemes, depictions, and a critical comparison of different types of floating breakwaters can be found in reference [10].…”

Section: Overview Of the Floating Breakwater Designsmentioning

confidence: 99%

Dynamic Analysis of an Array of Connected Floating Breakwaters

Ćatipović

Ćorak

Alujević

et al. 2019

JMSE

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“…Reducing the fatigue life, gradually damaging the floating body, and leading to failure of mooring lines are also arise from the uncontrolled vibrations in the floating breakwater system (Lee and Juang, 2012). Its mooring system is more prone to damage under severe environmental conditions, leading to drift away of floating part that jeopardizes the surrounding environment and structures (Dai et al, 2018). Koo (2009) properly demonstrated that restricting the floating body motions improves floating breakwater hydrodynamic performance as well as extending its scope of application.…”

Section: Introductionmentioning

confidence: 99%

Structural control of the floating breakwaters by implementation of tuned liquid column damper

Shahrabi

Bargi

2020

Advances in Structural Engineering

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The growing maritime activities have led offshore engineers to the application of floating breakwaters to protect coastlines from erosion and to provide a layer of support to ports in the case of strong wave actions. In these applications, minimizing the floating part responses to wave-induced excitations as one of the most critical operational characteristics would be a key factor. In this article, the structural responses of the floating breakwaters are studied through modeling and simulation. To mitigate the floating part wave-induced vibrations, an attached tuned liquid column damper is integrated into the simulation. In the first stage, the numerical model of the floating breakwater system containing the floating body and the mooring system is created. Then, by proposing an iterative coupling procedure, the joint tuned liquid column damper-floating breakwater model is developed. Several rigorous study cases are defined to evaluate the effect of tuned liquid column damper on controlling the floating body unwanted vibrations. In this application, the Airy wave theory and the Joint North Sea Wave Observation Project wave spectrum are used for wave excitations. In order to evaluate the effect of tuned liquid column damper on floating breakwaters, some design parameters like floating body motions and mooring system-mobilized tensile stresses are evaluated. The simulations are conducted in both the time domain and the frequency domain for cases with and without tuned liquid column damper. The rain flow counting method is applied to perform the mooring system fatigue analysis. The study results clearly proved that implementation of tuned liquid column damper would mitigate the floating body responses compared to the original floating breakwater system. In addition, it is indicated that the fatigue-induced failure risks in tuned liquid column damper-floating breakwater mooring system is decreased that would reduce the procurement costs and increase the operational safety of the floating breakwater system.

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“…The space within the floaters can be used for piping routing, personnel access and water ballasting when necessary. As the floating tanks are surrounded by floating barges serving as breakwaters [10], the waveinduced motions of the tanks are expected to be small [11]. However, other environment loads such as water current and wind, may be significant and may lead to undesirable levels of motion of the tanks that could lead to instability.…”

Section: Introductionmentioning

confidence: 99%

“…Motions of the tanks shall be controlled within an acceptable range so that it would not pose a problem during operation under working condition and survivability is not compromised under extreme environmental condition; 4. The tank sizes shall be designed with the desire to use minimum sea space; As the floating tanks are surrounded by floating barges serving as breakwaters [10], the wave-induced motions of the tanks are expected to be small [11]. However, other environment loads such as water current and wind, may be significant and may lead to undesirable levels of motion of the tanks that could lead to instability.…”

Section: Introductionmentioning

confidence: 99%

Large Floating Structure with Free-Floating, Self-Stabilizing Tanks for Hydrocarbon Storage

et al. 2019

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Hydrocarbon is a major source of energy for sustainable development. Storage of hydrocarbon products, however, requires a significant amount of land space to land-scarce countries like Singapore. This paper presents an alternative way of storing hydrocarbon in Singapore coastal waters through the innovative design of a floating hydrocarbon storage facility. The design comprises free-floating and self-stabilizing tanks enclosed by barges that form a floating hydrocarbon storage facility. The tanks are made of prestressed concrete and they are designed to be self-stabilized when floating in the sea water. Owing to the lack of available design guidelines, design requirements on the stability and motion criteria for floating storage tanks are developed based on a review of existing codes of practice and design specifications for both onshore tanks and offshore vessels. A comprehensive study on the hydrostatic performance of various proposed floating tank design concepts with different storage capacities is carried out. This paper aims to give design recommendations on the tank’s storage capacity and dimensional aspect ratios that fulfill the recommended stability requirements and motion criteria.

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Review of recent research and developments on floating breakwaters

Cited by 184 publications

References 45 publications

Dynamic Analysis of an Array of Connected Floating Breakwaters

Dynamic Analysis of an Array of Connected Floating Breakwaters

Structural control of the floating breakwaters by implementation of tuned liquid column damper

Large Floating Structure with Free-Floating, Self-Stabilizing Tanks for Hydrocarbon Storage

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