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    Moment-Rotation Response of Slender Steel I-Girders

    Source: Journal of Structural Engineering:;2010:;Volume ( 136 ):;issue: 012
    Author:
    Jennifer Righman McConnell
    ,
    Karl Barth
    DOI: 10.1061/(ASCE)ST.1943-541X.0000259
    Publisher: American Society of Civil Engineers
    Abstract: While it is well known that slender girders have less ductility than their compact counterparts, this reduction has not been explicitly quantified. This results in limitations on the use of slender girders, and consequently, potential reductions in economy. These limitations are particularly significant in the AASHTO moment redistribution procedures, which exclude the use of girders that fail to satisfy certain compactness requirements. Thus, this paper reports the results of finite-element analysis (FEA) that has been validated by experimental testing of a series of I-girders with plate width-to-thickness ratios and unbraced lengths exceeding the limits for use of these provisions. From the FEA results and the complementary experimental results, the ductility of this class of girders is quantified in terms of moment-rotation response. Furthermore, a moment-rotation model that may be used to represent the ductility of any I-girder that satisfies AASHTO’s criteria for general I-girders is proposed.
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      Moment-Rotation Response of Slender Steel I-Girders

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    contributor authorJennifer Righman McConnell
    contributor authorKarl Barth
    date accessioned2017-05-08T21:59:12Z
    date available2017-05-08T21:59:12Z
    date copyrightDecember 2010
    date issued2010
    identifier other%28asce%29st%2E1943-541x%2E0000299.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/68152
    description abstractWhile it is well known that slender girders have less ductility than their compact counterparts, this reduction has not been explicitly quantified. This results in limitations on the use of slender girders, and consequently, potential reductions in economy. These limitations are particularly significant in the AASHTO moment redistribution procedures, which exclude the use of girders that fail to satisfy certain compactness requirements. Thus, this paper reports the results of finite-element analysis (FEA) that has been validated by experimental testing of a series of I-girders with plate width-to-thickness ratios and unbraced lengths exceeding the limits for use of these provisions. From the FEA results and the complementary experimental results, the ductility of this class of girders is quantified in terms of moment-rotation response. Furthermore, a moment-rotation model that may be used to represent the ductility of any I-girder that satisfies AASHTO’s criteria for general I-girders is proposed.
    publisherAmerican Society of Civil Engineers
    titleMoment-Rotation Response of Slender Steel I-Girders
    typeJournal Paper
    journal volume136
    journal issue12
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0000259
    treeJournal of Structural Engineering:;2010:;Volume ( 136 ):;issue: 012
    contenttypeFulltext
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