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高轴压比高强混凝土柱抗震性能试验研究

DOI: 10.13197/j.eeev.2014.01.172.liyy.022, PP. 172-179

Keywords: 高轴压比,高强混凝土柱,反复水平荷载,抗震性能

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Abstract:

本文以4根高轴压比、高强混凝土柱为研究对象进行低周反复水平荷载试验,对各试件的破坏形态、滞回性能、延性、耗能性能、强度及刚度退化等试验结果进行研究,分析高轴压比、配箍率的变化对柱抗震性能的影响。结果表明,高强混凝土柱在反复水平荷载作用下发生弯曲破坏,箍筋间距较小试件的滞回曲线饱满,滞回环面积大,耗能大,延性好。各试件在加载初期刚度退化较快,后期较慢。试件C-1设计轴压比达到1.185时仍有较好的延性与抗震性能。该研究结果对发展应用高强混凝土具有实际意义。

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