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工程力学  2015 

高温后方钢管再生混凝土短柱轴压受力性能分析

DOI: 10.6052/j.issn.1000-4750.2014.04.S021, PP. 153-158

Keywords: 防灾减灾工程,钢管再生混凝土,高温后,轴压,承载力折减系数

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Abstract:

为研究高温后钢管再生混凝土短柱的轴压力学性能,利用ABAQUS有限元软件对轴压受力性能进行了理论分析和试验验证,对比分析了曾经历的不同温度和不同取代率对荷载-应变全过程曲线的影响,揭示了高温后轴压承载力折减系数的主要影响因素。研究结果表明:随着曾经历温度的升高和取代率的增加,钢管再生混凝土短柱的承载力整体上呈下降趋势,温度在500℃以上对承载力影响较大,而取代率对承载力的影响较小,且随曾经历温度的升高,影响幅度越小;含钢率、钢材屈服强度、核心混凝土抗压强度对高温后的轴压强度系数有显著影响,而取代率没有影响。

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