Pub Date : 2015-12-28DOI: 10.5150/REVUE-PARALIA.2015.S01
Laurent Mitaine, J. Rincent
In order to facilitate long-term maintenance of coastal and port infrastructures, this technique allows measuring and determining tension in ground anchors that support maritime and port retaining walls such as sheet piles or diaphragm walls. It applies both for final acceptance of works and for monitoring the residual tension in tendons during the life of the structure. This technique has three benefits: (i) it is non-destructive, as opposed to usual extra-loading technique that destroys or damage 10% of the ground anchors. It uses patented mechanical impedance instrumentation, which is manipulated by only one operator. It does not need heavy equipment; (ii) it allows testing an important quantity of ground anchors in shorter time, when usual extra-loading technique needs more logistics and forces to work only through anchor sampling; (iii) it works even under water, requiring only one diver. This technique then allows testing and checking all the ground anchors of a quay (or any other type of infrastructure using ground anchors), much faster than usual extra-loading technique and with excellent safety conditions.
{"title":"Innovative non-destructive technique for determining tension in ground anchors","authors":"Laurent Mitaine, J. Rincent","doi":"10.5150/REVUE-PARALIA.2015.S01","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2015.S01","url":null,"abstract":"In order to facilitate long-term maintenance of coastal and port infrastructures, this technique allows measuring and determining tension in ground anchors that support maritime and port retaining walls such as sheet piles or diaphragm walls. It applies both for final acceptance of works and for monitoring the residual tension in tendons during the life of the structure. This technique has three benefits: (i) it is non-destructive, as opposed to usual extra-loading technique that destroys or damage 10% of the ground anchors. It uses patented mechanical impedance instrumentation, which is manipulated by only one operator. It does not need heavy equipment; (ii) it allows testing an important quantity of ground anchors in shorter time, when usual extra-loading technique needs more logistics and forces to work only through anchor sampling; (iii) it works even under water, requiring only one diver. This technique then allows testing and checking all the ground anchors of a quay (or any other type of infrastructure using ground anchors), much faster than usual extra-loading technique and with excellent safety conditions.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117165926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-21DOI: 10.5150/REVUE-PARALIA.2015.N03
Fathi M. Esahiri
The planning of a new port, expansion or improvement of an existing one, requires many factors to be taken into consideration. For commercial ports, as well as oceanography considerations, the main factors are the nature of cargoes to be handled, size and type of ships to be served, and the land area for storage and smooth integration with land transport system. The volume of foreign and local trade of the country, the rate of growing of population and spatial development are the main points to be noted in any planning process. For a country as Libya and due to its strategic location in Africa and Mediterranean, transport planning should consider local requirements and serving the landlocked countries, namely Chad and Niger. The discovery of oil and other resources recently in both countries is an encouraging element. Nearly third of global trade and forty per cent of Africa trade with EU countries pass through the Mediterranean (UNCTAD, 2009). Development of transport corridors from Libya's coast, to Chad, Niger and Sudan, initially by road and potentially by rail could provide better economic results than using the present routes through Nigeria or Cameron. The share of transportation cost in the export and import trade in these countries is about fifty per cent.
{"title":"SHORT NOTE: The long term need for the Libyan commercial ports planning. Misurata, Alkhums and Tripoli ports as case study","authors":"Fathi M. Esahiri","doi":"10.5150/REVUE-PARALIA.2015.N03","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2015.N03","url":null,"abstract":"The planning of a new port, expansion or improvement of an existing one, requires many factors to be taken into consideration. For commercial ports, as well as oceanography considerations, the main factors are the nature of cargoes to be handled, size and type of ships to be served, and the land area for storage and smooth integration with land transport system. The volume of foreign and local trade of the country, the rate of growing of population and spatial development are the main points to be noted in any planning process. For a country as Libya and due to its strategic location in Africa and Mediterranean, transport planning should consider local requirements and serving the landlocked countries, namely Chad and Niger. The discovery of oil and other resources recently in both countries is an encouraging element. Nearly third of global trade and forty per cent of Africa trade with EU countries pass through the Mediterranean (UNCTAD, 2009). Development of transport corridors from Libya's coast, to Chad, Niger and Sudan, initially by road and potentially by rail could provide better economic results than using the present routes through Nigeria or Cameron. The share of transportation cost in the export and import trade in these countries is about fifty per cent.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129490538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-21DOI: 10.5150/REVUE-PARALIA.2015.N04
R. Marcer, K. Pons, C. Journeau, F. Golay
Into the frame of the TANDEM project (Tsunamis in the Atlantic and the English ChaNnel: Definition of the Effects through numerical Modeling) a first step of the study aims for Principia to qualify different 3D CFD (Computational Fluid Dynamics) models for the simulation of tsunamis. The EOLE code solves a 3D bi-fluid flow on multi-structures meshes coupled with a free surface tracking VOF model, whereas the EOLENS code is based on an interface capturing method using unstructured meshes. This paper presents some simulations / measurements comparisons for academic test cases of wave propagation and run-up. On the whole, the results are satisfactory showing the high potential of both codes to simulate tsunamis impact.
{"title":"SHORT NOTE: Validation of CFD models for tsunami simulation. TANDEM Project","authors":"R. Marcer, K. Pons, C. Journeau, F. Golay","doi":"10.5150/REVUE-PARALIA.2015.N04","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2015.N04","url":null,"abstract":"Into the frame of the TANDEM project (Tsunamis in the Atlantic and the English ChaNnel: Definition of the Effects through numerical Modeling) a first step of the study aims for Principia to qualify different 3D CFD (Computational Fluid Dynamics) models for the simulation of tsunamis. The EOLE code solves a 3D bi-fluid flow on multi-structures meshes coupled with a free surface tracking VOF model, whereas the EOLENS code is based on an interface capturing method using unstructured meshes. This paper presents some simulations / measurements comparisons for academic test cases of wave propagation and run-up. On the whole, the results are satisfactory showing the high potential of both codes to simulate tsunamis impact.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"1998 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128235093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-14DOI: 10.5150/REVUE-PARALIA.2015.N02
M. Ouadia, M. Aberkan, Khadija Aboumaria
Le complexe dunaire quaternaire du Jorf Lasfar, creuse transversalement lors de l’installation du complexe industriel Maroc Phosphore III et IV, revele la coupe la plus developpee et la plus detaillee dans la region. Il est forme de calcarenites dans lesquelles s'intercalent des paleosols rouges. Il reflete une periode climatique quaternaire seche, probablement soltanienne, entrecoupee par des phases humides et temperees. Les sables biocalcarenitiques formant ce complexe dunaire resultent d'une reprise de sediments de plage dont les elements terrigenes proviennent de plusieurs sources telles que le Moyen Atlas, la Meseta cotiere et le massif des Rehamna. Le complexe dunaire de Jorf Lasfar est affecte par une neotectonique qui prouve que ce secteur de la Meseta cotiere marocaine n'a pas ete stable au cours du Quaternaire, contrairement a ce qui a ete admis dans les travaux anterieurs. The Quaternary dune complex of Jorf Lasfar (Moroccan western coastal Meseta): lithostratigraphy, sedimentology and neotectonics) Abstract: The Quaternary dune complex of Jorf Lasfar, transversally dug during the Maroc Phosphore III and IV industrial complex installation, reveals the most developed and detailed cutting in the region. It consists of calcarenites in which red paleosols are interspersed. It reflects a dry quaternary period climate, probably Soltanian, interrupted by humid and temperate phases. The biocalcarenitic sands constituting this dune complex result from a range of sediment resumption which terrigenous elements coming from several sources such as the Middle Atlas, the coastal Meseta and Rehamna massif. The Jorf Lasfar dune complex is affected by neotectonic proving that this sector of the Moroccan coastal Meseta was not stable during the Quaternary, contrary to what was agreed in previous work.
Jorf Lasfar的第四纪沙丘复合体，在Maroc磷III和IV工业复合体安装期间横向挖掘，揭示了该地区最发达和最详细的部分。它是钙质岩的一种形式，其中点缀着红色古土。它反映了一个干燥的第四纪气候时期，可能是太阳时期，被潮湿和温带阶段打断。形成这个沙丘复合体的生物钙质砂是海滩沉积物恢复的结果，其中的陆地元素来自几个来源，如中阿特拉斯，高原海岸和Rehamna地块。Jorf Lasfar沙丘复合体受到新构造作用的影响，这表明摩洛哥海岸高原的这一部分在第四纪期间并不稳定，这与之前的工作所承认的相反。Jorf Lasfar(摩洛哥西部沿海高原)第四纪沙丘复合体:岩石地层学、沉积学和新构造学摘要:Jorf Lasfar第四纪沙丘复合体，在摩洛哥磷III和IV工业复合体安装期间横向挖掘，揭示了该地区最发达和最详细的切割。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.)水。它反映了干燥的第四纪气候，可能是Soltanian，被潮湿和温带相破坏。The biocalcarenitic金沙constituting this dune complex)的结果from a range of沉积物resumption which terrigenous要素》里from来源such as The Middle图集》、《海岸山脉与Rehamna山脉。Jorf Lasfar沙丘复合体受到新构造的影响，证明该地区在第四纪期间不稳定，这与以前的工作所同意的相反。
{"title":"Le complexe dunaire quaternaire du Jorf Lasfar (Meseta côtière occidentale marocaine) : lithostratigraphie, sédimentologie et néotectonique","authors":"M. Ouadia, M. Aberkan, Khadija Aboumaria","doi":"10.5150/REVUE-PARALIA.2015.N02","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2015.N02","url":null,"abstract":"Le complexe dunaire quaternaire du Jorf Lasfar, creuse transversalement lors de l’installation du complexe industriel Maroc Phosphore III et IV, revele la coupe la plus developpee et la plus detaillee dans la region. Il est forme de calcarenites dans lesquelles s'intercalent des paleosols rouges. Il reflete une periode climatique quaternaire seche, probablement soltanienne, entrecoupee par des phases humides et temperees. Les sables biocalcarenitiques formant ce complexe dunaire resultent d'une reprise de sediments de plage dont les elements terrigenes proviennent de plusieurs sources telles que le Moyen Atlas, la Meseta cotiere et le massif des Rehamna. Le complexe dunaire de Jorf Lasfar est affecte par une neotectonique qui prouve que ce secteur de la Meseta cotiere marocaine n'a pas ete stable au cours du Quaternaire, contrairement a ce qui a ete admis dans les travaux anterieurs. The Quaternary dune complex of Jorf Lasfar (Moroccan western coastal Meseta): lithostratigraphy, sedimentology and neotectonics) Abstract: The Quaternary dune complex of Jorf Lasfar, transversally dug during the Maroc Phosphore III and IV industrial complex installation, reveals the most developed and detailed cutting in the region. It consists of calcarenites in which red paleosols are interspersed. It reflects a dry quaternary period climate, probably Soltanian, interrupted by humid and temperate phases. The biocalcarenitic sands constituting this dune complex result from a range of sediment resumption which terrigenous elements coming from several sources such as the Middle Atlas, the coastal Meseta and Rehamna massif. The Jorf Lasfar dune complex is affected by neotectonic proving that this sector of the Moroccan coastal Meseta was not stable during the Quaternary, contrary to what was agreed in previous work.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121049072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-02-02DOI: 10.5150/REVUE-PARALIA.2015.N01
G. N’doufou, J. Abe, S. B. Bamba, Célestin Hauhouot, K. Aka
Ce travail est une contribution a la connaissance des modifications morpho sedimentaires du littoral compris entre Abidjan et Jacqueville. La methode utilisee a cette fin s’appuie sur le traitement, l’analyse de profils topographiques et d’echantillons de sable collectes sur le terrain lors de campagnes successives effectuees entre 1998 et 2008. Cette approche a debouche sur la mise en evidence d’un deficit sedimentaire de -2500 m3 a Port-Bouet et d’un bilan sedimentaire positif de +2300 m3 a Jacqueville. Cet engraissement occasionne une progradation de 13,5 m du trait de cote. L’etude sedimentologique met en evidence des stocks sedimentaires differents sur les deux sites. Un stock constitue principalement de materiels polis et grossiers a Jacqueville qui denote un long transport par l’eau, et un stock constitue essentiellement de materiels subanguleux a anguleux et tres grossiers a Port-Bouet temoignant d’une source pourvoyeuse proche. Cette etude met en evidence les effets des ouvrages de protection du canal portuaire sur la repartition des facies entre Jacqueville et Port-Bouet. Impacts of the construction of Vridi channel on the coastal sediment stocks located between Abidjan and Jacqueville (Cote d’Ivoire) This work is a contribution to the knowledge of sediments and morphology changes of the coast between Abidjan and Jacqueville. The method used for this purpose is based on processing, analysis of topographic profiles and sand sampling collected on the field during successive surveys which were conducted from the year 1998 to 2008. The approach resulted in the identification of a sedimentary deficit of -2500 m3 in Port-Bouet and a positive sediment budget +2300 m3 in Jacqueville. This feeding engrossment causes a coastline progradation of 13.5 m. Sediments study highlights the various sediment stocks on both sites. On one hand, there is a stock mainly composed of coarse and polished material in Jacqueville indicating a long water way carriage, and on the other hand, there is a main stock of sub-angular to angular and very coarse materials in Port-Bouet showing the closeness of the purveying source. This study highlights the effects of protection works realized on the port channel on the distribution of facies between Jacqueville and Port-Bouet. Keywords: Erosion and accretion; Sediment budget; Beach Profile; Port-Bouet; Jacqueville; Cote d’Ivoire.
{"title":"Effets de l’ouverture du Canal de Vridi sur les stocks sédimentaires littoraux entre Abidjan et Jacqueville (Côte d’Ivoire)","authors":"G. N’doufou, J. Abe, S. B. Bamba, Célestin Hauhouot, K. Aka","doi":"10.5150/REVUE-PARALIA.2015.N01","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2015.N01","url":null,"abstract":"Ce travail est une contribution a la connaissance des modifications morpho sedimentaires du littoral compris entre Abidjan et Jacqueville. La methode utilisee a cette fin s’appuie sur le traitement, l’analyse de profils topographiques et d’echantillons de sable collectes sur le terrain lors de campagnes successives effectuees entre 1998 et 2008. Cette approche a debouche sur la mise en evidence d’un deficit sedimentaire de -2500 m3 a Port-Bouet et d’un bilan sedimentaire positif de +2300 m3 a Jacqueville. Cet engraissement occasionne une progradation de 13,5 m du trait de cote. L’etude sedimentologique met en evidence des stocks sedimentaires differents sur les deux sites. Un stock constitue principalement de materiels polis et grossiers a Jacqueville qui denote un long transport par l’eau, et un stock constitue essentiellement de materiels subanguleux a anguleux et tres grossiers a Port-Bouet temoignant d’une source pourvoyeuse proche. Cette etude met en evidence les effets des ouvrages de protection du canal portuaire sur la repartition des facies entre Jacqueville et Port-Bouet. Impacts of the construction of Vridi channel on the coastal sediment stocks located between Abidjan and Jacqueville (Cote d’Ivoire) This work is a contribution to the knowledge of sediments and morphology changes of the coast between Abidjan and Jacqueville. The method used for this purpose is based on processing, analysis of topographic profiles and sand sampling collected on the field during successive surveys which were conducted from the year 1998 to 2008. The approach resulted in the identification of a sedimentary deficit of -2500 m3 in Port-Bouet and a positive sediment budget +2300 m3 in Jacqueville. This feeding engrossment causes a coastline progradation of 13.5 m. Sediments study highlights the various sediment stocks on both sites. On one hand, there is a stock mainly composed of coarse and polished material in Jacqueville indicating a long water way carriage, and on the other hand, there is a main stock of sub-angular to angular and very coarse materials in Port-Bouet showing the closeness of the purveying source. This study highlights the effects of protection works realized on the port channel on the distribution of facies between Jacqueville and Port-Bouet. Keywords: Erosion and accretion; Sediment budget; Beach Profile; Port-Bouet; Jacqueville; Cote d’Ivoire.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126267640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-12-15DOI: 10.5150/REVUE-PARALIA.2014.N02
Roser Obrer-Marco, J. Aguilar
Le Systeme Portuaire Espagnol (SPE) est compose de 46 ports d’interet general, geres par 28 Autorites Portuaires. Les relations entre ces autorites portuaires sont de nature concurrentielle, ce qui fait de la planification un outil indispensable pour qu’elles soient competitives. Grâce a la planification les gerants des ports sont capables d’ajuster la capacite et les conditions physiques des infrastructures portuaires aux previsions de croissance du trafic. Il est essentiel que les departements de planification des Autorites Portuaires espagnoles disposent d’un outil qui soit capable d’estimer la capacite des infrastructures, et plus precisement des quais. Jusqu’a present, le plus courant pour estimer cette capacite a ete d’appliquer une formulation qui assume un nombre determine de postes d’accostage, tous identiques : formulation discrete. Neanmoins, l’exploitation des quais des terminaux a conteneurs est faite de maniere continue. Pour cette raison, il faut faire un pas en avant et utiliser une formulation qui reflete l’exploitation reelle des quais : formulation continue. Dans cet article on presente une formulation continue et on la compare avec la formulation discrete, en mettant en evidence les erreurs qui peuvent etre commises en supposant que le quai est compose d’un ensemble de postes d’accostage identiques. Pour cela, on a applique les deux formulations au terminal a conteneurs MSC Terminal Valencia, S.A. du port de Valencia (Espagne) avant et apres son agrandissement en 2010. Modelizacion continua del atraque de buques para el calculo de la capacidad de los muelles. Aplicacion a las grandes terminales de contenedores espanolas El Sistema Portuario Espanol (SPE) se compone de 46 puertos de interes general, gestionados por 28 Autoridades Portuarias. El clima entre estas Autoridades Portuarias es de maxima competencia, de ahi que la planificacion sea una herramienta indispensable para que estas sean competitivas. Gracias a la planificacion los gestores de los puertos son capaces de ajustar la capacidad y las condiciones fisicas de las infraestructuras portuarias a las previsiones de crecimiento del trafico. En este cometido es por tanto indispensable que los departamentos de planificacion de las Autoridades Portuarias espanolas dispongan de una herramienta capaz de estimar la capacidad de las infraestructuras, y en concreto de los muelles. Hasta el momento, para estimar dicha capacidad ha sido habitual la aplicacion de una formulacion que asume el muelle compuesto de un numero determinado de atraques iguales: formulacion discreta. Sin embargo, la explotacion de los muelles en las terminales de contenedores se lleva a cabo de manera continua. Por ello es necesario dar un paso adelante y utilizar una formulacion que refleje la explotacion real de los muelles: formulacion continua. En este articulo se presenta una formulacion continua y se compara con la discreta, haciendo ver los posibles errores que se pueden estar cometiendo al tener qu
{"title":"Modélisation continue de l'accostage des navires pour le calcul de la capacité des quais. Application aux grands terminaux à conteneurs espagnols","authors":"Roser Obrer-Marco, J. Aguilar","doi":"10.5150/REVUE-PARALIA.2014.N02","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2014.N02","url":null,"abstract":"Le Systeme Portuaire Espagnol (SPE) est compose de 46 ports d’interet general, geres par 28 Autorites Portuaires. Les relations entre ces autorites portuaires sont de nature concurrentielle, ce qui fait de la planification un outil indispensable pour qu’elles soient competitives. Grâce a la planification les gerants des ports sont capables d’ajuster la capacite et les conditions physiques des infrastructures portuaires aux previsions de croissance du trafic. Il est essentiel que les departements de planification des Autorites Portuaires espagnoles disposent d’un outil qui soit capable d’estimer la capacite des infrastructures, et plus precisement des quais. Jusqu’a present, le plus courant pour estimer cette capacite a ete d’appliquer une formulation qui assume un nombre determine de postes d’accostage, tous identiques : formulation discrete. Neanmoins, l’exploitation des quais des terminaux a conteneurs est faite de maniere continue. Pour cette raison, il faut faire un pas en avant et utiliser une formulation qui reflete l’exploitation reelle des quais : formulation continue. Dans cet article on presente une formulation continue et on la compare avec la formulation discrete, en mettant en evidence les erreurs qui peuvent etre commises en supposant que le quai est compose d’un ensemble de postes d’accostage identiques. Pour cela, on a applique les deux formulations au terminal a conteneurs MSC Terminal Valencia, S.A. du port de Valencia (Espagne) avant et apres son agrandissement en 2010. Modelizacion continua del atraque de buques para el calculo de la capacidad de los muelles. Aplicacion a las grandes terminales de contenedores espanolas El Sistema Portuario Espanol (SPE) se compone de 46 puertos de interes general, gestionados por 28 Autoridades Portuarias. El clima entre estas Autoridades Portuarias es de maxima competencia, de ahi que la planificacion sea una herramienta indispensable para que estas sean competitivas. Gracias a la planificacion los gestores de los puertos son capaces de ajustar la capacidad y las condiciones fisicas de las infraestructuras portuarias a las previsiones de crecimiento del trafico. En este cometido es por tanto indispensable que los departamentos de planificacion de las Autoridades Portuarias espanolas dispongan de una herramienta capaz de estimar la capacidad de las infraestructuras, y en concreto de los muelles. Hasta el momento, para estimar dicha capacidad ha sido habitual la aplicacion de una formulacion que asume el muelle compuesto de un numero determinado de atraques iguales: formulacion discreta. Sin embargo, la explotacion de los muelles en las terminales de contenedores se lleva a cabo de manera continua. Por ello es necesario dar un paso adelante y utilizar una formulacion que refleje la explotacion real de los muelles: formulacion continua. En este articulo se presenta una formulacion continua y se compara con la discreta, haciendo ver los posibles errores que se pueden estar cometiendo al tener qu","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115297170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Arnaud, Damien Sous, J. Touboul, F. Gouaud, V. Rey
L'objet de ce travail etait d'etudier l'effet de la surface specifique sur la dissipation d'energie a travers un milieu poreux "modele", constitue d'un reseau dense de cylindres verticaux emergeants. Les experiences ont ete menees dans un canal hydraulique a surface libre de longueur utile 10 etres. Trois maquettes ont ete realisees a l'aide de cylindre de diametres variables. Chacune de ces maquettes, d'une longueur maximale de 4.80m, est constituee d'un reseau regulier de cylindres de diametre constant. Ce dispositif nous permet d'etudier, a porosite constante egale a 0.7, l'effet des variations de surface specifique sur l'ecoulement. Une premiere serie de mesure a ete realisee pour des courants stationnaires, dans des conditions de vitesse et de hauteurs d'eau variables, une deuxieme serie sur la propagation de houles regulieres. Les resultats en presence d'un courant stationnaire ont montre une influence tres significative de la surface specifique sur la perte de charge a travers le poreux. Cette influence se retrouve sur l'attenuation de l'onde et sur le phenomene d'interference observe, d'autant plus faible que la structure est longue par rapport a la longueur d'onde. La longueur d'onde dans le milieu poreux est bien decrite par la porosite et le choix adequat d'une masse ajoutee.
{"title":"Ecoulements stationnaires ou oscillants à travers un milieu poreux: effets de la surface spécifique","authors":"G. Arnaud, Damien Sous, J. Touboul, F. Gouaud, V. Rey","doi":"10.5150/JNGCGC.2014.00","DOIUrl":"https://doi.org/10.5150/JNGCGC.2014.00","url":null,"abstract":"L'objet de ce travail etait d'etudier l'effet de la surface specifique sur la dissipation d'energie a travers un milieu poreux \"modele\", constitue d'un reseau dense de cylindres verticaux emergeants. Les experiences ont ete menees dans un canal hydraulique a surface libre de longueur utile 10 etres. Trois maquettes ont ete realisees a l'aide de cylindre de diametres variables. Chacune de ces maquettes, d'une longueur maximale de 4.80m, est constituee d'un reseau regulier de cylindres de diametre constant. Ce dispositif nous permet d'etudier, a porosite constante egale a 0.7, l'effet des variations de surface specifique sur l'ecoulement. Une premiere serie de mesure a ete realisee pour des courants stationnaires, dans des conditions de vitesse et de hauteurs d'eau variables, une deuxieme serie sur la propagation de houles regulieres. Les resultats en presence d'un courant stationnaire ont montre une influence tres significative de la surface specifique sur la perte de charge a travers le poreux. Cette influence se retrouve sur l'attenuation de l'onde et sur le phenomene d'interference observe, d'autant plus faible que la structure est longue par rapport a la longueur d'onde. La longueur d'onde dans le milieu poreux est bien decrite par la porosite et le choix adequat d'une masse ajoutee.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127958490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-31DOI: 10.5150/REVUE-PARALIA.2014.N01
M. Mansour, Abdel-Ilah Mihraje, Jamal Eddine Stitou Messari
Le site du Port Tanger Mediterranee, situe sur les flyschs de Tisirene de l’unite de Tanger faisant partie du domaine externe rifain, a fait l’objet de plusieurs campagnes de reconnaissance geotechnique qui ont permis d’etablir une synthese geologique et geotechnique et de reperer des couches de sables satures susceptibles de liquefier sous l’effet des seismes. L’analyse du risque de liquefaction est conduite sur la base des essais in situ (CPTU) et selon les deux seismes consideres dans le projet. Elle montre que la zone a risque est reduite et se situe entre les essais CPT22 et 25 et que le seisme lointain est plus nefaste pour le terrain que le seisme de source proche. La charge appliquee par l’ouvrage reduit ou attenue selon les cas le potentiel de liquefaction, il subsiste cependant dans la partie superficielle du sol sur environ 3m de hauteur. Tangier Mediterranean Port: geological & geotechnical study & assessing the risk of earthquake-related liquefaction using the Cone Penetration Test (CPTU) The geological basement of the Tangier Mediterranean port (southeastern Gibraltar coast) is here studied to locate sand-saturated levels, in order to assess the risk of earthquake-induced liquefaction. Geological and geotechnical field analyses based on cone penetration tests (CPTU) lead to the four following results: (i) the high-risk area is reduced and is situated between CPT22 and 25, (ii) clayey silty sands prone to earthquake-related liquefaction directly occur beneath the protecting structures, (iii) the distant earthquake source is more fatal for the ground beneath the studied port, than the earthquake from a close source, and (iv) the load applied by the building can reduce the potential of liquefaction, but remains efficient only for the first 3m depth. Keywords: Tangier Mediterranean Port; Geology; Geotechnical; Cone penetration test; Earthquakes intensity of project; Risk of liquefaction.
tangier地中海港口,是工地上最西北部Tisirene数组的丹吉尔riffean外部域的一部分,经过了几次运动勘察工程勘察,妨碍了一层的地质工程勘察和想象其他综合作用下的地震可能liquefier饱和砂。液化风险分析是根据现场试验(CPTU)和项目中考虑的两次地震进行的。这表明危险区域很小，位于CPT22和25测试之间，远震对地面的危害比近震大。结构施加的荷载根据情况减少或软化了液化的潜力，但它仍然存在于土壤表面约3米高的地方。Tangier地中海港口:地质对角study &《评估》(the risk of earthquake-related使用圆锥穿透试验》(CPTU液化)地质地下室of the Tangier地中海港湾(直布罗陀海岸东南部)is here studied to locate sand-saturated级评估,in order to the risk of earthquake-induced液化。基于圆锥贯入试验的地质和岩土现场分析得出以下四项结果:(i)旅the high-risk area is现金and is between CPT22 and 25,(二)clayey silty金沙41分钟earthquake-related液化直接地有sous la protecting the距地震来源结构,(iii)致命is more for the ground sous la studied港、than the地震from a close the负载应用蛋白质的来源,和(iv) by the building adc reduce the液化潜能》,3m遗骨高效only for the first depth目的。关键词:丹吉尔地中海港口;地质学;对角;锥贯入试验;项目地震强度;液化的风险。
{"title":"Port Tanger Méditerranée : étude géologique et géotechnique, et analyse du risque de liquéfaction à partir des essais in situ","authors":"M. Mansour, Abdel-Ilah Mihraje, Jamal Eddine Stitou Messari","doi":"10.5150/REVUE-PARALIA.2014.N01","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2014.N01","url":null,"abstract":"Le site du Port Tanger Mediterranee, situe sur les flyschs de Tisirene de l’unite de Tanger faisant partie du domaine externe rifain, a fait l’objet de plusieurs campagnes de reconnaissance geotechnique qui ont permis d’etablir une synthese geologique et geotechnique et de reperer des couches de sables satures susceptibles de liquefier sous l’effet des seismes. L’analyse du risque de liquefaction est conduite sur la base des essais in situ (CPTU) et selon les deux seismes consideres dans le projet. Elle montre que la zone a risque est reduite et se situe entre les essais CPT22 et 25 et que le seisme lointain est plus nefaste pour le terrain que le seisme de source proche. La charge appliquee par l’ouvrage reduit ou attenue selon les cas le potentiel de liquefaction, il subsiste cependant dans la partie superficielle du sol sur environ 3m de hauteur. Tangier Mediterranean Port: geological & geotechnical study & assessing the risk of earthquake-related liquefaction using the Cone Penetration Test (CPTU) The geological basement of the Tangier Mediterranean port (southeastern Gibraltar coast) is here studied to locate sand-saturated levels, in order to assess the risk of earthquake-induced liquefaction. Geological and geotechnical field analyses based on cone penetration tests (CPTU) lead to the four following results: (i) the high-risk area is reduced and is situated between CPT22 and 25, (ii) clayey silty sands prone to earthquake-related liquefaction directly occur beneath the protecting structures, (iii) the distant earthquake source is more fatal for the ground beneath the studied port, than the earthquake from a close source, and (iv) the load applied by the building can reduce the potential of liquefaction, but remains efficient only for the first 3m depth. Keywords: Tangier Mediterranean Port; Geology; Geotechnical; Cone penetration test; Earthquakes intensity of project; Risk of liquefaction.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114572766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-27DOI: 10.5150/REVUE-PARALIA.2014.S03
V. Lafon, J. Mugica, Cyrill Mallet, A. Dehouck
Un outil d’aide a la gestion environnementale des parcs ostreicoles du Bassin d’Arcachon est presente ici. Il repose sur une methode de determination semi-automatisee de la nature et de l’etat des concessions, exploitant des images de teledetection tres haute resolution spatiale. La validation de la carte de teledetection montre que l’etat de la surface (entretenu ou en friche) et le mode de culture sont detectes dans 92% et 85% des cas, respectivement. D’autre part, les superficies de friche obtenues par teledetection excedent de 20% celles mesurees sur le terrain, 75% des friches etant retrouvees in situ. Au total, 96% des parcelles sont correctement cartographiees. La teledetection tres haute resolution est donc, au vu de ces resultats chiffres, un outil de gestion du domaine pertinent et efficace, qui, en outre, permet d’enrichir le cadastre d’attributs d’etat et de couches vectorisees representant les friches ostreicoles. Abstract: An environmental management tool used for mapping oyster-farming activities of the Arcachon lagoon is presented here. It is based on a semi-automatized detection method of the nature and status (clean/dirty) of oyster farms. It exploits very high resolution remote sensing imagery. Validation of the remotely sensed map shows that the surface status and the type of practice are detected in 92% and 85% of the cases, respectively. The simulated surface associated to waste lands exceeds by about 20% the observed ground-field one, 75% of them corresponding to real “dirty” farms. Altogether, 96% of the oyster-farming parcels are correctly mapped. Therefore, very high resolution remote sensing is an efficient and valuable management tool that, moreover, allows enhancing the cadaster with attributes relative to the status of oyster farms and underlying waste lands as vector layers. Keywords: Remote sensing; Mapping; Oyster-farming; Domain status; Management.
{"title":"Cartographie de l'état de parcs ostréicoles par télédétection très haute résolution. Application au domaine concédé du Bassin d'Arcachon","authors":"V. Lafon, J. Mugica, Cyrill Mallet, A. Dehouck","doi":"10.5150/REVUE-PARALIA.2014.S03","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2014.S03","url":null,"abstract":"Un outil d’aide a la gestion environnementale des parcs ostreicoles du Bassin d’Arcachon est presente ici. Il repose sur une methode de determination semi-automatisee de la nature et de l’etat des concessions, exploitant des images de teledetection tres haute resolution spatiale. La validation de la carte de teledetection montre que l’etat de la surface (entretenu ou en friche) et le mode de culture sont detectes dans 92% et 85% des cas, respectivement. D’autre part, les superficies de friche obtenues par teledetection excedent de 20% celles mesurees sur le terrain, 75% des friches etant retrouvees in situ. Au total, 96% des parcelles sont correctement cartographiees. La teledetection tres haute resolution est donc, au vu de ces resultats chiffres, un outil de gestion du domaine pertinent et efficace, qui, en outre, permet d’enrichir le cadastre d’attributs d’etat et de couches vectorisees representant les friches ostreicoles. Abstract: An environmental management tool used for mapping oyster-farming activities of the Arcachon lagoon is presented here. It is based on a semi-automatized detection method of the nature and status (clean/dirty) of oyster farms. It exploits very high resolution remote sensing imagery. Validation of the remotely sensed map shows that the surface status and the type of practice are detected in 92% and 85% of the cases, respectively. The simulated surface associated to waste lands exceeds by about 20% the observed ground-field one, 75% of them corresponding to real “dirty” farms. Altogether, 96% of the oyster-farming parcels are correctly mapped. Therefore, very high resolution remote sensing is an efficient and valuable management tool that, moreover, allows enhancing the cadaster with attributes relative to the status of oyster farms and underlying waste lands as vector layers. Keywords: Remote sensing; Mapping; Oyster-farming; Domain status; Management.","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116779203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-13DOI: 10.5150/REVUE-PARALIA.2014.S01
Sébastien Dupray, John R. Williams, Jonathan Simm, Melanie Meadon
Les bois tropicaux sont utilises dans les ouvrages maritimes et cotiers. Des caracteristiques elevees (durabilite, resistance mecanique, resistance a l’abrasion, resistance aux xylophages, …) sont requises dans ce type d’environnement. Certains bois temperes pourraient atteindre le niveau requis, mais uniquement s’ils etaient traites industriellement. La recente legislation europeenne a restreint le nombre de traitements utilisables dans le milieu maritime. De plus, il y a un souci general sur le caractere potentiellement nefaste de ces produits pour l’environnement. Les retours sur la performance en service de certaines essences sont bons. Ainsi, les maitres d’œuvre ou les entreprises tendent a limiter leur choix a celles-ci, notamment l’azobe et le greenheart, ce qui accroit la pression sur ces seules essences. La recherche conduite de 2007 a 2009 par Environment Agency, TRADA, HRWallingford et le CETMEF a permis d’identifier une liste d’essences de bois a partir de bases de donnees. Cette liste a ensuite ete progressivement reduite a partir d’essais innovants de qualification de la resistance a l’usure et la resistance aux xylophages (en laboratoire et in situ). Enfin des caracteristiques en vraie grandeur ont ete determinees pour cinq essences. Abstract: Tropical hardwoods are used in coastal and maritime structures. High level of characteristics and performance (durability, strength, resistance to abrasion, resistance to marine borers…) are expected in such environments. Some softwood of Europe could meet the requirement but only if they were treated industrially. There is some concern that preservatives may be harmful to the environment and the recent legislation however limits their use in the marine environment. Feed-back from experience of exposure to service conditions is good for some hardwoods. Hence, designer and contractors tend to limit their choice to these only timbers, in particular greenheart and ekki. Consequently, the sustainability of the use of these only species is questionable. The research conducted from 2007 to 2009 by Environment Agency, TRADA, HRWallingford and CETMEF identified a list of species from available database, which was progressively reduced thanks to innovative tests to assess resistance to abrasion and to marine borers attack (laboratory tests and field tests). Finally, the full-scale strength of five species was determined. Keywords: Coastal structures; Maritime structures; Timber; Marine borers; Abrasion; Ekki; Greenheart
{"title":"Durabilité du bois à la mer. Utilisation d'essences alternatives de bois durables pour les ouvrages maritimes et côtiers","authors":"Sébastien Dupray, John R. Williams, Jonathan Simm, Melanie Meadon","doi":"10.5150/REVUE-PARALIA.2014.S01","DOIUrl":"https://doi.org/10.5150/REVUE-PARALIA.2014.S01","url":null,"abstract":"Les bois tropicaux sont utilises dans les ouvrages maritimes et cotiers. Des caracteristiques elevees (durabilite, resistance mecanique, resistance a l’abrasion, resistance aux xylophages, …) sont requises dans ce type d’environnement. Certains bois temperes pourraient atteindre le niveau requis, mais uniquement s’ils etaient traites industriellement. La recente legislation europeenne a restreint le nombre de traitements utilisables dans le milieu maritime. De plus, il y a un souci general sur le caractere potentiellement nefaste de ces produits pour l’environnement. Les retours sur la performance en service de certaines essences sont bons. Ainsi, les maitres d’œuvre ou les entreprises tendent a limiter leur choix a celles-ci, notamment l’azobe et le greenheart, ce qui accroit la pression sur ces seules essences. La recherche conduite de 2007 a 2009 par Environment Agency, TRADA, HRWallingford et le CETMEF a permis d’identifier une liste d’essences de bois a partir de bases de donnees. Cette liste a ensuite ete progressivement reduite a partir d’essais innovants de qualification de la resistance a l’usure et la resistance aux xylophages (en laboratoire et in situ). Enfin des caracteristiques en vraie grandeur ont ete determinees pour cinq essences. Abstract: Tropical hardwoods are used in coastal and maritime structures. High level of characteristics and performance (durability, strength, resistance to abrasion, resistance to marine borers…) are expected in such environments. Some softwood of Europe could meet the requirement but only if they were treated industrially. There is some concern that preservatives may be harmful to the environment and the recent legislation however limits their use in the marine environment. Feed-back from experience of exposure to service conditions is good for some hardwoods. Hence, designer and contractors tend to limit their choice to these only timbers, in particular greenheart and ekki. Consequently, the sustainability of the use of these only species is questionable. The research conducted from 2007 to 2009 by Environment Agency, TRADA, HRWallingford and CETMEF identified a list of species from available database, which was progressively reduced thanks to innovative tests to assess resistance to abrasion and to marine borers attack (laboratory tests and field tests). Finally, the full-scale strength of five species was determined. Keywords: Coastal structures; Maritime structures; Timber; Marine borers; Abrasion; Ekki; Greenheart","PeriodicalId":202784,"journal":{"name":"Revue Paralia","volume":"376 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114426105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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