Performance of pile-restrained flexible floating breakwaters

Diamantoulaki, Ioanna; Angelides, Demos C.; Manolis, George D.

doi:10.1016/j.apor.2009.03.004

Cited by 45 publications

(13 citation statements)

References 24 publications

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“…The effect of hydroelasticity on flexible floating breakwaters has been studied by Williams et al [10] for one compliant beam-like breakwater (idealized as 1D beam of uniform flexural rigidity) using an appropriate Green function, and by Abul-Azm [42] using an eigenfunction approach; both of the researches use 2D hydrodynamic analysis. Diamantoulaki et al [43] and Manolis et al [44] have also investigated the effect of hydroelasticity on flexible floating breakwaters using 3D hydrodynamic analysis. Furthermore, the effect of hydroelasticity phenomena on floating breakwaters connected by hinge joints has been investigated numerically by Newman [33], Lee and Newman [45] and Diamantoulaki and Angelides [46,47].…”

Section: Introductionmentioning

confidence: 99%

Modeling of cable-moored floating breakwaters connected with hinges

Diamantoulaki

Angelides

2011

Engineering Structures

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Section: Introductionmentioning

confidence: 99%

Modeling of cable-moored floating breakwaters connected with hinges

Diamantoulaki

Angelides

2011

Engineering Structures

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“…To this aim, many researchers have been carried out with the approach of evaluating the utilization of different mooring types. Isaacson et al (1998) and Diamantoulaki et al (2008) extensively investigated the response of pile-restrained floating breakwaters. Besides its benefits, there are notable structural constraints with regard to the construction and employment of this system.…”

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 most simple and durable type of floating breakwater is of a single pontoon type, which is generally made of ferroconcrete in cuboid shapes. For the single pontoon floating breakwater (SPFB) moored by the vertical pile or mooring lines, extensive theoretical [3][4][5], numerical [6][7][8], and experimental [9][10][11] solutions has been executed, although with different highlights such as wave reflections/transmissions, motion responses, hydroelasticities, wave loads and effects of the mooring system. Another attractive option for attenuating waves and reducing wave turbulence is dual pontoon floating breakwater (DPFB).…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic performance of floating breakwaters in long wave regime: An experimental study

Cheng

Cui

et al. 2018

Ocean Engineering

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Hydrodynamic behavior tests of long water waves with the floating breakwater is a important mission in some near-reef sea areas. Especially, the performance of the wave would be more complex when natural periods of the motion are defined within the range of wave frequencies. In this study, a series of experiments are conducted under long regular wave actions to investigate the hydrodynamic performance of four slack-moored floating breakwater models, which include single box, single porous box, double cylindrical pontoon and double cylindrical pontoon with mesh cage and suspending balls. The experimental results display that the wave transmission and wave energy dissipation for four models have multiple turning points produced near the natural periods of floating structures in long wave regime, while that is not evident for the reflection coefficient. The resonant responses are also observed in the motions and mooring tension of four models, which further explain the turning point phenomenon appeared in transmission and dissipation coefficient. The overall results reveal that the porous plates and mesh cage with balls is effective for mitigating the turning point phenomenon due to additional water mass and damping effects, and also holds the potential for reducing the motions and mooring forces, which validate the feasibility of the novel floating breakwaters.

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Performance of pile-restrained flexible floating breakwaters

Cited by 45 publications

References 24 publications

Modeling of cable-moored floating breakwaters connected with hinges

Modeling of cable-moored floating breakwaters connected with hinges

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

Hydrodynamic performance of floating breakwaters in long wave regime: An experimental study

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