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    Effects of Sustained Load on Concrete-Filled Hollow Structural Steel Columns

    Source: Journal of Structural Engineering:;2004:;Volume ( 130 ):;issue: 009
    Author:
    Lin-Hai Han
    ,
    Zhong Tao
    ,
    Wei Liu
    DOI: 10.1061/(ASCE)0733-9445(2004)130:9(1392)
    Publisher: American Society of Civil Engineers
    Abstract: The use of concrete-filled hollow structural steel (HSS) columns has become widespread in the past few decades. However, these members are subject to static long-term behaviors under sustained loading, a common phenomenon in concrete structures. Such a problem has not been addressed satisfactorily by design codes. The present study is an attempt to predict the time-dependent behavior of concrete-filled HSS columns by means of a model that is proposed by ACI 209R-92. Tests on the behavior of concrete-filled HSS columns with square sections under long-term sustained loading are performed, in addition to proposing further tests on the static ultimate strength of the composite columns. A theoretical model of analysis to account for shrinkage and creep effects on concrete-filled HSS columns under sustained loading is presented. A comparison of results calculated using this model shows good agreement with test results. Finally, formulas for the calculation of the ultimate strength of the concrete-filled HSS columns subjected to long-term sustained loads are presented.
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      Effects of Sustained Load on Concrete-Filled Hollow Structural Steel Columns

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    http://yetl.yabesh.ir/yetl1/handle/yetl/34372
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    contributor authorLin-Hai Han
    contributor authorZhong Tao
    contributor authorWei Liu
    date accessioned2017-05-08T20:59:11Z
    date available2017-05-08T20:59:11Z
    date copyrightSeptember 2004
    date issued2004
    identifier other%28asce%290733-9445%282004%29130%3A9%281392%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/34372
    description abstractThe use of concrete-filled hollow structural steel (HSS) columns has become widespread in the past few decades. However, these members are subject to static long-term behaviors under sustained loading, a common phenomenon in concrete structures. Such a problem has not been addressed satisfactorily by design codes. The present study is an attempt to predict the time-dependent behavior of concrete-filled HSS columns by means of a model that is proposed by ACI 209R-92. Tests on the behavior of concrete-filled HSS columns with square sections under long-term sustained loading are performed, in addition to proposing further tests on the static ultimate strength of the composite columns. A theoretical model of analysis to account for shrinkage and creep effects on concrete-filled HSS columns under sustained loading is presented. A comparison of results calculated using this model shows good agreement with test results. Finally, formulas for the calculation of the ultimate strength of the concrete-filled HSS columns subjected to long-term sustained loads are presented.
    publisherAmerican Society of Civil Engineers
    titleEffects of Sustained Load on Concrete-Filled Hollow Structural Steel Columns
    typeJournal Paper
    journal volume130
    journal issue9
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)0733-9445(2004)130:9(1392)
    treeJournal of Structural Engineering:;2004:;Volume ( 130 ):;issue: 009
    contenttypeFulltext
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