钢管混凝土柱-RC梁平面框架耐火性能分析

发布时间：2018-04-19 11:49

本文选题：钢管混凝土柱 + 钢筋混凝土梁　；参考：《工程力学》2014年S1期

【摘要】：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。
[Abstract]:The finite element analysis model of concrete-filled steel tubular column-reinforced concrete beam plane frame structure under the combined action of external load, rising and cooling fire is established, and the model is verified by existing experimental data.Based on the finite element model, the mechanical properties of concrete filled steel tubular column-reinforced concrete beam plane frame under ISO-834 standard rising and cooling fire are analyzed, and the influence law of beam load ratio, column load ratio and heating time ratio are studied.The results show that the combined frame will not only destroy in the process of heating, but also in the process of cooling.Whether the composite frame will be destroyed in the cooling section is related to the ratio of beam load to column load and the ratio of heating time.
【作者单位】：清华大学土木工程系;西悉尼大学基础设施工程研究院;
【分类号】：TU398.9

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