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Hofland, Bas (author), Houtzager, Daan (author), Caldera, Ganga (author), Antonini, A. (author), van Gent, M.R.A. (author), Bakker, Pieter (author), van der Lem, Cock (author)Single layer randomly placed armour units are used in many rubble mound breakwaters around the world. For these armour layers first extraction of units starts at high loads and can then progress quickly. Before the first extraction of a unit, typically no quantitative description of damage can be given. But additional to extraction, breakage of...journal article 2023
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Van den Bos, J.P. (author), Verhagen, H.J. (author), Kuiper, C. (author)This paper presents the results of a systematic validation of numerical simulation of reflection and transmission of rubble-mound breakwater structures. The aim of the study is to provide a body of validation measurements for increasingly complex situations, starting simple and building up the comlexity in terms of breawater geometry, wave...conference paper 2015
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Verpoorten, S.P.K. (author), Ockeloen, W.J. (author), Verhagen, H.J. (author)Since 1977 dedicated studies are made to the stability of rubble mound break-water toes under wave attack. A large number of stability methods is available, but prediction accuracy is low and validity ranges are too small for use in prac-tice. In this research the decoupled model approach is used to evaluate predic-tion capacity of existing toe...conference paper 2015
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Salauddin, M. (author)In the design of rubble mound breakwaters, nowadays single layer systems using concrete armour units have become more common practice compared to conventional two layer systems. However, after the introduction of the accropode in eighties, a small number of single layer armour units have been developed over the years; for example core-loc, A...report 2015
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Bonfantini, F. (author)The Crablock is a symmetrical unit, this in contrast to the units that have been applied most in the past. Essentially, this is the main difference. All other units have six obstacles that insure interlocking, but they are not symmetrical. All those units are placed randomly in a certain way with more or less contacts to neighbouring units. A...report 2014
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Voorendt, M.Z. (author), Molenaar, W.F. (author), Bezuyen, K.G. (author)Lecture notes CT3330. Introduction, history of caissons, construction of standard caisson, design of standard caisson, construction of pneumatic caissons.lecture notes 2011
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Verhagen, H.J. (author)In the ROCK MANUAL (2007) some guidance is given for the design of toes for breakwaters. However, for very shallow toes, as well as for very wide toes (or berms) this guidance is only marginally. Recently a number of shallow berms and toes have been constructed, partly with the intention to lower the height of the breakwater. These works showed...conference paper 2010
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Allsop, N.W.H. (author), Cork, R.S. (author), Verhagen, H.J. (author)This paper introduces a co-operative project between HR Wallingford UK (HRW) and Delft University of Technology, Netherlands, (TUD) to develop, populate, and then to apply a database on all major breakwaters around the world. It builds on, and revives, similar initiatives that originate in the late 1970s. The paper describes the objectives in...conference paper 2009
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Verhagen, H.J. (author), Mertens, M. (author)In the Rock Manual [2007] two sets of equations for the determination of rock stability in breakwaters armour layers are presented. One set is the original formula presented by Van der Meer [1988], valid for deep water conditions. This set uses the parameters Hs and Tm. The other set is an adaptation of these formulae, using the parameters H2%...conference paper 2009
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De Rover, R. (author), Verhagen, H.J. (author), Van den Berge, A. (author), Reedijk, B. (author)The effect of single layer interlocking armour unit breakage on the hydraulic armour layer stability and potential damage progression is addressed in this paper. A 2-dimensional scale model of a rubble mound breakwater with an armour layer consisting of Xbloc armour units was tested. The residual armour layer stability with broken units was...conference paper 2008
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Lykke Andersen, T. (author)An introduction to the principles and fundamentals of designing rubble mound breakwaters, led to the definition of two important white spots in designing rubble mound breakwaters. These were selected for further investigations in the present thesis. 1. Design of berm breakwaters: A generally lack of data and design formulae was identifed, but...report 2006
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Kuiper, C. (author), Van Gent, M.R.A. (author)De Bouwdienst van Rijkswaterstaat heeft WL Delft Hydraulics opdracht gegeven voor het uitvoeren van 2D fysisch modelonderzoek ten behoeve van een mogelijke renovatie van de havendammen van IJmuiden. Het betreft enerzijds modelonderzoek om meer inzicht te verkrijgen in mogelijk optredende schademechanismen bij de huidige constructie (Proevenserie...report 2006
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Kuipe, C. (author), Klein Breteler, M. (author), Booster, L.N. (author), Eysink, W. (author)In Zeeland zijn er vele havendammen die de primaire waterkering plaatselijk beschermen tegen grote golfaanval. Zelfs onder maatgevende omstandigheden zijn vele van deze dammen nog hoog genoeg om een belangrijke reducerende werking te hebben op de inkomende golven. Uiteraard kan de invloed van de golfreducerende werking van havendammen alleen in...report 2006
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Lara, J.L. (author)Adaptation of COBRAS VOF model for typical breakwater applications and worked out examples of water movement in and around breakwater cross sections.report 2005
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Verhagen, H.J. (author)In a classical design approach to breakwaters a design wave height is determined, and filled in into a design formula. Some undefined safety is added. In the method using partial safety coefficients (as developed by PIANC [1992] and recently also adopted by the Coastal Engineering Manual of the US Army Corps of Engineers [CEM [2003]) the degree...conference paper 2003
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Oumeraci, H. (author), Allsop, N.W.H. (author), De Groot, M.B. (author), Crouch, R.S. (author), Vrijling, J.K. (author)Final report and appendices of the European project Proverbs on tools for the design of vertical breakwaters (caisson type breakwaters) and similar hydraulic structures in the coastal zone. It includes the loads (waves) as well as the strength of the structure (geotechnial aspects, structural aspects)book 1999
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Burcharth, H.F. (author), Liu, Z. (author)The RMBFM-Project (Rubble Mound Breakwater Failure Modes) is sponsored by the Directorate General XII of the Commission of the European Communities under the Contract MAS-CT92- 0042, with the objective of contributing to the development of rational methods for the design of rubble mound breakwaters. 11 institutes from the European Union...report 1995
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Hauer, M. (author), Op den Velde, W. (author), Vrijling, J.K. (author), D' Angremond, K. (author)Given a harbour location and a wave-climate, two different types of rubble-mound breakwaters were designed. Using realistic quarry yield curves and prices for production, transport and constmction, the total costs of the conventional statically stable and dynamically stable bermbreakwater designs were compared to each other. This comparison led...conference paper 1995
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Howie, W. (author), Whitelaw, J. (author), Winney, M. (author)Overview of the construction of the caissons and the construction of the invasion port at Arromanches in Normandy, France. Includes interviews with the engineers involved.report 1994
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D' Angremond, K. (author)Lecture notes on the design of rubble mound and caisson breakwaters.lecture notes 1994