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    Riprap Size Selection at Wing-Wall Abutments

    Source: Journal of Hydraulic Engineering:;2007:;Volume ( 133 ):;issue: 011
    Author:
    Bruce W. Melville
    ,
    Sjoerd van Ballegooy
    ,
    Stephen E. Coleman
    ,
    Brian Barkdoll
    DOI: 10.1061/(ASCE)0733-9429(2007)133:11(1265)
    Publisher: American Society of Civil Engineers
    Abstract: The results of an experimental investigation of riprap stability at wing-wall abutments are reported. The aim of the experiments was the determination of the size of riprap stones necessary to resist shear failure by the flow. The results, which were obtained under a wide range of mobile-bed conditions, are compared with predictions of riprap stone size given by existing equations. Two existing methods, with the addition of suitable factors of safety, are shown to give stable stone size for riprap layers at wing-wall abutments under mobile-bed conditions. It is noted that consideration needs also to be given to filter protection, edge effects, and the effects of bed-form undermining in the design of such riprap layers.
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      Riprap Size Selection at Wing-Wall Abutments

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    http://yetl.yabesh.ir/yetl1/handle/yetl/26225
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    contributor authorBruce W. Melville
    contributor authorSjoerd van Ballegooy
    contributor authorStephen E. Coleman
    contributor authorBrian Barkdoll
    date accessioned2017-05-08T20:45:40Z
    date available2017-05-08T20:45:40Z
    date copyrightNovember 2007
    date issued2007
    identifier other%28asce%290733-9429%282007%29133%3A11%281265%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/26225
    description abstractThe results of an experimental investigation of riprap stability at wing-wall abutments are reported. The aim of the experiments was the determination of the size of riprap stones necessary to resist shear failure by the flow. The results, which were obtained under a wide range of mobile-bed conditions, are compared with predictions of riprap stone size given by existing equations. Two existing methods, with the addition of suitable factors of safety, are shown to give stable stone size for riprap layers at wing-wall abutments under mobile-bed conditions. It is noted that consideration needs also to be given to filter protection, edge effects, and the effects of bed-form undermining in the design of such riprap layers.
    publisherAmerican Society of Civil Engineers
    titleRiprap Size Selection at Wing-Wall Abutments
    typeJournal Paper
    journal volume133
    journal issue11
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)0733-9429(2007)133:11(1265)
    treeJournal of Hydraulic Engineering:;2007:;Volume ( 133 ):;issue: 011
    contenttypeFulltext
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