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Influence of riprap apron shape on spill-through abutments / Gonzalo Simarro in Journal of hydraulic research, Vol. 50 N° 1 (Janvier/Février 2012) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 50 N° 1 (Janvier/Février 2012) . - pp. 138-141 Titre : Influence of riprap apron shape on spill-through abutments Type de document : texte imprimé Auteurs : Gonzalo Simarro, Auteur ; Sofia Civeira, Auteur ; António H. Cardoso, Auteur Année de publication : 2012 Article en page(s) : pp. 138-141 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Abutment  Clear-water  scour  Experimentation  Protection  Riprap  Scour Résumé : This technical note focuses on the plan geometry of riprap mattresses to protect spill-through abutments against local scour through edge failure. Two non-standard riprap apron geometries are experimentally studied. The performance of the new geometries is evaluated by comparing it with that of the standard design in terms of apron width and total riprap volume needed to guarantee stability. For comparatively short abutments, it is demonstrated that one of the new proposed geometries allows reductions between 15% and 25% in the total riprap volume without any increase in both design complexity and building difficulty. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.650422 [article] Influence of riprap apron shape on spill-through abutments [texte imprimé] / Gonzalo Simarro, Auteur ; Sofia Civeira, Auteur ; António H. Cardoso, Auteur . - 2012 . - pp. 138-141. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 50 N° 1 (Janvier/Février 2012) . - pp. 138-141 Mots-clés : Abutment  Clear-water  scour  Experimentation  Protection  Riprap  Scour Résumé : This technical note focuses on the plan geometry of riprap mattresses to protect spill-through abutments against local scour through edge failure. Two non-standard riprap apron geometries are experimentally studied. The performance of the new geometries is evaluated by comparing it with that of the standard design in terms of apron width and total riprap volume needed to guarantee stability. For comparatively short abutments, it is demonstrated that one of the new proposed geometries allows reductions between 15% and 25% in the total riprap volume without any increase in both design complexity and building difficulty. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.650422