Deformation of rubble-mound breakwaters under cyclic loads

Cihan, Kubilay; Yüksel, Yalçın

doi:10.1016/j.coastaleng.2011.02.002

Cited by 21 publications

(3 citation statements)

References 4 publications

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“…Concerning the measurement of the damage to the structure, a long time has passed since the pioneering work of Hudson (1959), who measured the crosssections by using a sounding rod equipped with a circular spirit level, a graduated scale and a ball-and-socket foot. Nowadays, in hydraulic laboratories the measurement of armour layer damage is generally performed through mechanical or laser profiling (Vidal et al, 2003;Cihan and Yuksel, 2013;van Gent, 2013van Gent, , 2014Guler et al, 2015) or visually by means of video cameras (Kramer et al, 2005;Vidal et al, 2006;Eslami and van Gent, 2010;Cihan and Yuksel, 2011;Comola et al, 2014;van Gent, 2014).…”

Section: Introductionmentioning

confidence: 99%

3-D monitoring of rubble mound breakwater damages

et al. 2018

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Breakwaters play a crucial role in the protection of coastal zones. Their maintenance is critical to safeguard the daily activities of harbours and marine areas. The evaluation of damage is a necessity for timely preservation works. Traditional monitoring methods span various techniques, ranging from mechanical profilers to optical systems. Current methods though are typically expensive, requiring remarkably sophisticated technologies which demand a high degree of expertise to be operated. In this paper, we propose an affordable yet accurate fully automated method based on 3D cameras. Our technique is non invasive, allowing hence non intrusive as well as fast measure of damage over time, simultaneously above and below sea water level. Experimental results obtained on laboratory breakwater models demonstrated that the proposed point cloud method, which does not depend on the imaging sensor and can be applied to any 3D dataset of rubble mound breakwater, can achieve accurate damage estimation, even when using a budget RGB-D camera. One of the additional advantages of using RGB-D cameras is the possibility to obtain measurements also in the presence of water.

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Section: Introductionmentioning

confidence: 99%

3-D monitoring of rubble mound breakwater damages

et al. 2018

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“…Yu¨ksel et al 3 presented a study on seismically induced deformations at Eregli Fishery Port breakwater along the southern coast of Izmit Bay, Turkey. A series of experimental and numerical studies were carried out by Cihan et al [11][12][13] to obtain the dynamic response of rubble-mound breakwaters under seismic loading. They explained damage to a conventional breakwater during cyclic loading experimentally and numerically and studied the seismic response of homogenous rubble-mound breakwaters.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of a rubble-mound breakwater subject to earthquake including seawater–structure-foundation interaction

Xia

Jin

2015

Proceedings of the Institution of Mechanical Engineers, Part M:

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Rubble-mound breakwaters are generally subjected to strong seismic waves propagating even when seated on weak soil deposits, and they interact with seawater in most cases. The purpose of this article is to understand the dynamic response of a rubble-mound breakwater with seawater-breakwater-foundation interaction after a real earthquake shock. In this study, employing the arbitrary Lagrangian-Eulerian approach and dynamic finite element method, in which the seawater and the foundation of rubble-mound breakwater are considered, the dynamic responses of rubble-mound breakwater during earthquakes are simulated using the LS-DYNA finite element program. It is found that the seawaterbreakwater-foundation interaction does have a considerable effect on residual displacements of the rubble-mound breakwater. The influence on horizontal residual displacement caused by the effect of seawater-breakwater interaction is greater than that on the vertical residual displacement, and the seawater-breakwater-foundation interaction does not necessarily reduce the horizontal and vertical displacements but also increases them. The vertical component of earthquake has a considerable effect on hydrodynamic pressure on the breakwater face. This investigation considers the seismic behavior of rubble-mound breakwaters by taking into account the coupling between the hydrodynamic loading and the shaking of the structure. According to the results, presented in this study, it is significant to consider the effect of interaction for rubble-mound breakwaters seismic safety evaluation.

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“…De nombreuses études ont été proposées pour étudier la déformation des digues en enrochements sous sollicitations sismiques. Dans ces travaux, parmi lesquels on cite [6], la digue est supposée continue alors qu'elle est composée d'éléments discrets (blocs superposés). D'autres modèles numériques basés sur la méthode des éléments discrets (DEM) ont été développés à ce propos [5], mais la méthode DEM nécessite l'introduction d'un amortissement artificiel.…”

Section: Introductionunclassified