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工程力学  2014 

钢管混凝土柱-RC梁平面框架耐火性能分析

Keywords: 钢管混凝土柱,钢筋混凝土梁,组合框架,火灾,耐火性能

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Abstract:

建立了外荷载和升、降温火灾共同作用下钢管混凝土柱-钢筋混凝土梁平面框架结构的有限元分析模型,用已有试验数据对模型进行了验证。在有限元模型基础上,对钢管混凝土柱-钢筋混凝土梁平面框架在ISO-834标准升、降温火灾下的力学性能进行了分析,研究了梁荷载比、柱荷载比和升温时间比等参数的影响规律。分析结果表明该组合框架不仅会在升温过程中破坏,也会在降温过程中破坏。该组合框架是否会在降温段发生破坏,跟梁荷载比、柱荷载比和升温时间比有关。

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