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首页> 外文期刊>Advances in civil engineering >Analysis of Concrete-Filled Steel Tube Reinforced Concrete Column-Steel Reinforced Concrete Beam Plane Frame Structure Subjected to Fire
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Analysis of Concrete-Filled Steel Tube Reinforced Concrete Column-Steel Reinforced Concrete Beam Plane Frame Structure Subjected to Fire

机译：混凝土钢管钢管钢管钢筋混凝土钢筋混凝土梁平面框架结构经过射击的分析

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摘要

The ABAQUS finite-element analysis platform was used to understand the mechanical behavior of concrete-filled steel tube reinforced concrete (CFSTRC) columns and steel reinforced concrete (SRC) beam plane frames under fire conditions. Thermal parameters and mechanical constitutive model of steel and concrete materials were reasonably selected, the correct boundary conditions were chosen, and a numerical model for the thermal mechanical coupling of CFSTRC columns and SRC beam plane frame structure was established. The finite-element model was verified from related experimental test results. The failure modes, deformation, and internal force distribution of the CFSTRC column and SRC beam plane frames were analyzed under ISO-834 standard fire conditions and with an external load. The influence of beam and column fire-load ratio on the fire resistance of the frame structure was established, and the fire-resistance differences between the plane frame structures and columns were compared. The CFSTRC column-steel reinforced concrete beam plane frame may undergo beam failure or the column and beam may fail simultaneously. The frame structure fire-resistance decreased with an increase of column and beam fire-load ratio. The column and beam fire-load ratio influence the fire resistance of the frames significantly. In this numerical example, the fire resistance of the frames is less than the single columns. It is suggested that the fire resistance of the frame structure should be considered when a fire-resistant structural engineering design is carried out.
机译：ABAQUS有限元分析平台用于了解火灾条件下混凝土钢管钢管钢管混凝土（CFSTRC）柱和钢筋混凝土（SRC）梁平面框架的机械特性。合理选择钢和混凝土材料的热参数和机械本构模型，选择了正确的边界条件，建立了CFSTRC柱和SRC梁平面框架结构的热机械耦合的数值模型。有限元模型验证了相关的实验测试结果。在ISO-834标准火灾条件下分析CFSTRC柱和SRC梁平面帧的故障模式，变形和内部力分布，并进行外部负载。建立了梁和柱燃烧比对框架结构的耐火性的影响，比较了平面框架结构与柱之间的耐火差异。 CFSTRC柱钢钢筋混凝土梁平面框架可以经历梁故障或柱子和梁可能同时失效。框架结构耐火性随着柱和光束火力负荷比的增加而降低。柱子和光束载荷比显着影响框架的耐火性。在该数值示例中，帧的耐火电阻小于单列。建议在进行耐火结构工程设计时，应考虑框架结构的耐火性。

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