Searched for: subject:"sea%5C+dike"
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Hofland, B. (author), Chen, X. (author), Altomare, Corrado (author), Oosterlo, P. (author)
During the last decades, the spectral wave period Tm-1,0 has become accepted as a characteristic wave period when describing the hydraulic attack on coastal structures, especially over shallow foreshores. In this study, we derive an empirical prediction formula for Tm-1,0 on shallow to extremely shallow...
journal article 2017
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Tan, S. (author)
Approximately 400 kilometres of Dutch sea dikes are protected by bituminous concrete revetments to prevent damage from erosion and repeated wave attacks during storms. The numerical analysis of sea dikes subjected to cyclic wave loading needs to consider the behaviour of the bituminous concrete revetment, and the behaviour of the subsoil...
doctoral thesis 2016
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Le, H.T. (author), Verhagen, H.J. (author), Vrijling, J.K. (author)
Grass covers have been applied as an effective measure for protecting river levees and sea dikes. We conducted experiments to show how roots considerably improve the shear strength of soil on dike slopes. Roots of 1-year-old Bermuda and Carpet grass may increase the total shear strength of up to 20 kPa. Exposed to severe overtopping flow, dike...
journal article 2016
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Trung, L.H. (author), Van der Meer, J.W. (author), Verhagen, H.J. (author)
Little is known about the strength of the land-side slopes of the Vietnamese sea dikes under overtopping attack. Some grass-covered slopes were tested by a wave overtopping simulator. The paper describes the simulator and presents the test results. The tested grass covers could withstand overtopping rates varying from 20 l/s to 100 l/s per meter...
journal article 2014
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Jassim, I. (author), Tan, S. (author), Vermeer, P.A. (author), Hicks, M.A. (author)
The numerical simulation of wave attack on a sea dike with an asphalt concrete revetment during a severe storm is carried out using the dynamic Finite Element Method. When wave loads attack the revetment during such a storm, both the revetment and the underlying soil may be damaged. The two-phase flow equations are considered, to study the...
conference paper 2012
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Tri, M.C. (author), Cong, M.V. (author), Verhagen, H.J. (author), Nghia, N.K. (author)
In the low-lying coastal regions coastal defense structures are usually designed with a main function to protect the hinterland from highly vulnerable of sea flooding. Sea dikes are usually the most common and important elements which form the coastal flood defense system. Sea dikes are designed at a pre-defined circumstance and requirement. For...
conference paper 2012
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Verhagen, H.J. (author)
Apart from many ecological advantages, mangroves in front of a coastal defence may lower the construction and maintenance costs of the defence. Although mangroves have hardly any reducing effect on water levels (and on tsunami impact) mangroves may significantly reduce wave attack on a coastal dike, and in this way reduce the cost of a revetment...
conference paper 2012
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Trung, L.H. (author), Verhagen, H.J. (author), Van der Meer, J.W. (author), Cat, V.M. (author)
The landware slopes of sea dikes in the north of Vietnam are steep and solely constructed by soil covered with grass due to the budget constraints and also the out-of-date design guidelines.The resistance against erosion due to wave overtopping of several grass covered slopes were tested with the Wave Overtopping Simulator to show if a slope...
conference paper 2012
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Mai Van, C. (author)
This study further develops the method of probabilistic design and to address a knowledge gap in its application regarding safety and reliability, risk assessment and risk evaluation to the fields of flood defences. The thesis discusses: - a generic probabilistic design framework for assessing flood defence systems; - statistical techniques in...
doctoral thesis 2010
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Hughes, S.A. (author)
This report is a compilation of facts and information that summarizes the present state of knowledge related to wave attack on the flood side of earthen levees. Particular emphasis was placed on the need for providing flood-side armoring (beyond the protection afforded by grass) for the New Orleans Hurricane & Storm Damage Risk Reduction System ...
report 2010
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Husrin, S. (author)
Results showed that the existing model on erosion of clay with water-filled cracks (Führböter’s theory) which only considers cohesion as the soil strength is only applicable for certain conditions. The model should consider other resistant forces such as soil weight and pore pressures. From the tests on clay without water-filled cracks, it...
report 2009
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Geisenhainer, P. (author)
Description of the performance of the large-scale experiments in the GWK in Hannover in 2008
report 2009
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Geisenhainer, P. (author)
This report describes small-scaled experiments performed at Leichtweiß-Institute for Hydraulic Engineering and Water Resources, Technical University Braunschweig (LWI). The experiments have been conducted to investigate the development of dike breaches in homogeneous sand dikes with and without a clay layer. The used scaling factor was 1:10.The...
report 2009
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Mai, C.V. (author), Van Gelder, P.H.A.J.M. (author), Vrijling, J.K. (author), Mai, T.C. (author)
This paper aims at risk analysis and the investigation of safety aspects of coastal flood defences in Vietnam. The sea dike system has been actually designed by a 20 to 25 years return period. From the current situation it seems that the dike system is not sufficient to withstand the actual sea boundary conditions. Accurate safety assessment of...
conference paper 2008
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Erchinger, H.F. (author)
The ‚Guidelines and Recommendations for the Design of Coastal Structures (EAK)‘ published in 1993 (Die Küste, H. 55) have been revised based on today’s scientific knowledge, technical development and practical experience of the past years. Major parts of the recommendations have been re-written. Together with the unmodified recommendations, D, E...
report 2007
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d'Elisio, C. (author)
Based on an extensive literature study on the most relevant processes associated with dike breaching and the models available, a modelling strategy was developed which consists in the development of a preliminary and a detailed breaching model (LWI Report 910). This progress report aims to address the development and implementation of the...
report 2007
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Stanczak, G. (author)
This report addresses the preparation and performance of laboratory tests on a the erodibility of clay cover with and without grass, subjected to impact pressures generated by controlled falling water mass Three types of clay, representing different erosion resistances as well as grass cover of moderate quality have been used in order to gain...
report 2007
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Kortenhaus, A. (author)
This report reviews previous investigations on hydraulic loading conditions for different types of flood defence structures such as sea dikes, dunes, beaches and seawalls. For each of these structures the physical processes involved are discussed in some detail and methods are given to either predict relevant input parameters for failure modes...
report 2007
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Dahlerus, C.J.; Egermayer, D. (author)
The main objectives of this study was to analyze waves and water levels, from existing climate data, to make conclusions about how the beach, particularly the sand dunes, at Ystad Sandskog has been influenced by the coastal climate up to today. Based on available forecasts, possible scenarios were developed for this area, making it possible to...
report 2006
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Oedekerk, M. (author)
Climate change will cause increasing physical loads on the flood defence of the Province of Groningen along the North Sea over the next decades. This is caused by a sea level rise between 15 and 35 centimetres whilst the ground level is lowering between 38 and 48 centimetres until the year 2050. This results in salt-water intrusion into the land...
report 2006
Searched for: subject:"sea%5C+dike"
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