典型受火方式下型钢混凝土异形柱耐火极限研究

发布时间：2018-04-27 05:18

本文选题：型钢混凝土 + 异形柱　；参考：《钢结构》2017年11期

【摘要】：应用有限元软件ABAQUS建立型钢混凝土柱数值模型,研究4种典型受火方式下SRC异形柱的耐火性能,探讨各因素对SRC异形柱耐火极限的影响。结果表明:矩形柱耐火性能优于异形柱;对于任意截面的SRC柱,耐火极限均随荷载比的增大而减小,且矩形和L形SRC柱在高荷载比时下降更多;荷载比较小时L形柱的耐火性能优于T形柱,荷载比较大时T形柱的耐火性能优于L形柱;实腹式配钢SRC柱的耐火性能优于空腹式。研究结果可为SRC异形柱的抗火设计提供依据和参考。
[Abstract]:The numerical model of steel reinforced concrete columns was established by using finite element software ABAQUS. The fire resistance of SRC special-shaped columns under four typical fire modes was studied and the influence of various factors on the fire resistance limit of SRC special-shaped columns was discussed. The results show that the fire resistance of rectangular columns is better than that of special-shaped columns, and for SRC columns with arbitrary section, the fire resistance limit decreases with the increase of load ratio, and the rectangular and L-shaped SRC columns decrease more when the load ratio is high. The fire-resistance of L-shaped column is better than that of T-shaped column when the load is small, the fire-resistance of T-shaped column is better than that of L-shaped column when the load is high, and the fire-resistance of solid web SRC column is better than that of fasting type. The results can provide the basis and reference for the fire resistance design of SRC special-shaped columns.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51108371) 陕西省自然科学基础研究基金项目(2015JM5164) 陕西省教育厅重点实验室科研计划项目(16JS050)
【分类号】：TU352.5;TU398.9

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