三肢钢管混凝土格构式柱耐火性能分析

Translated title of the contribution: Analysis on fire performance of concrete-filled steel tubular (CFST) trimple-limb laced columns

Zhi-qiang Cui, Lin-hai Han, Tian-yi Song

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A finite element analysis (FEA) model is established to study the fire performance of concrete-filled steel tubular (CFST) triple-limb laced columns subjected to ISO834 standard fire including heating and cooling phases. Some key issues regarding the fire performance of CFST triple-limb laced columns, including the failure mode, the axial deformation and load distribution on each CFST chord are studied when the columns reach a limit state, based on the FEA model. Besides, the influence of the load ratio and heating time ratio on whether the CFST triple-limb laced columns would reach a limit state in the cooling phase of fire is discussed. It can be found that the column could reach a limit state both in a heating phase and a cooling phase of fire. With the increase of a heating time ratio at an identical load ratio, or with the increase of a load ratio at an identical heating time ratio, the possibility of the column reaching the limit state in a cooling phase increased, and the failure time in the cooling phase decreased.
    Translated title of the contributionAnalysis on fire performance of concrete-filled steel tubular (CFST) trimple-limb laced columns
    Original languageChinese (Simplified)
    Pages (from-to)207-212
    Number of pages6
    JournalEngineering Mechanics
    Volume31
    Issue numberSuppl.
    DOIs
    Publication statusPublished - 2014

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