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    Moment-Rotation-Temperature Characteristics of Steel/Composite Connections

    Source: Journal of Structural Engineering:;1999:;Volume ( 125 ):;issue: 010
    Author:
    T. C. H. Liu
    DOI: 10.1061/(ASCE)0733-9445(1999)125:10(1188)
    Publisher: American Society of Civil Engineers
    Abstract: This paper presents a 3D mathematical model based on the finite-element method to simulate the structural response of steel and steel/concrete composite connections so that their moment-rotation-temperature characteristics can be predicted. The treatment of material nonlinearity at elevated temperatures is described. A special element has been developed to model the bolts, which may expand freely without creating unrealistic forces on the connected components. The composite concrete slab is modeled by 3D brick elements with a simple crack-crush capability. The numerical model was compared with the results from eight different series of connection fire tests, all incorporating tests with different loading levels. The type of connections included those that are normally assumed to be “pinned” and those that could be classified as “rigid.” The range of parameters included the end-plate thickness and the number and size of bolts. This theoretical model is shown to be capable of providing accurate moment-rotation characteristics of connections that can be incorporated in the analysis of global frame behavior in the event of fire. It can also enrich the database of connection behavior at elevated temperatures.
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      Moment-Rotation-Temperature Characteristics of Steel/Composite Connections

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    http://yetl.yabesh.ir/yetl1/handle/yetl/33092
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    contributor authorT. C. H. Liu
    date accessioned2017-05-08T20:57:17Z
    date available2017-05-08T20:57:17Z
    date copyrightOctober 1999
    date issued1999
    identifier other%28asce%290733-9445%281999%29125%3A10%281188%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/33092
    description abstractThis paper presents a 3D mathematical model based on the finite-element method to simulate the structural response of steel and steel/concrete composite connections so that their moment-rotation-temperature characteristics can be predicted. The treatment of material nonlinearity at elevated temperatures is described. A special element has been developed to model the bolts, which may expand freely without creating unrealistic forces on the connected components. The composite concrete slab is modeled by 3D brick elements with a simple crack-crush capability. The numerical model was compared with the results from eight different series of connection fire tests, all incorporating tests with different loading levels. The type of connections included those that are normally assumed to be “pinned” and those that could be classified as “rigid.” The range of parameters included the end-plate thickness and the number and size of bolts. This theoretical model is shown to be capable of providing accurate moment-rotation characteristics of connections that can be incorporated in the analysis of global frame behavior in the event of fire. It can also enrich the database of connection behavior at elevated temperatures.
    publisherAmerican Society of Civil Engineers
    titleMoment-Rotation-Temperature Characteristics of Steel/Composite Connections
    typeJournal Paper
    journal volume125
    journal issue10
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(1999)125:10(1188)
    treeJournal of Structural Engineering:;1999:;Volume ( 125 ):;issue: 010
    contenttypeFulltext
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