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首页> 外文期刊>Journal of Constructional Steel Research >Seismic performance of angle-steel reinforced concrete columns confined with spiral reinforcement
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Seismic performance of angle-steel reinforced concrete columns confined with spiral reinforcement

机译：角钢钢筋混凝土柱的地震性能局限性螺旋加固

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摘要

Angle-steel reinforced concrete columns internally confined by spiral reinforcement (SCARC) were developed to improve the seismic ductility and energy dissipation capacity. In the present study, cyclic loading tests on nine column specimens were conducted to investigate the seismic performance. The failure process and hysteretic characteristics were examined. The bending moment, deformation capacity and energy dissipation capacity were evaluated through parametric analysis of axial load level, volumetric ratio of spiral reinforcement, transverse steel configuration and types of cross section. A hysteretic model of SCARC columns based on the experimental skeleton curves and hysteretic loops was proposed. Experimental results showed that SCARC columns exhibited more satisfactory seismic performance than angle-steel reinforced concrete columns. The hysteresis characteristics, peak strength, ductility and energy dissipation capacity of SCARC columns were improved due to the increased confinement from spiral reinforcement. The developed hystereticmodel provided a reliable prediction of SCARC columns under cyclic loading. (C) 2020 The Authors. Published by Elsevier Ltd.
机译：开发了由螺旋增强（SIMC）内部限制的角钢钢筋混凝土柱，以提高地震延性和能量耗散能力。在本研究中，进行了九个柱样本的循环加载试验以研究地震性能。检查了故障过程和滞后特征。通过轴向载荷水平的参数分析，螺旋加固，横向钢配置和横截面类型的体积比进行评估弯曲力矩，变形容量和能量耗散能力。提出了一种基于实验骨架曲线和滞后环的杂志柱滞回模型。实验结果表明，斯卡布柱比角钢钢筋混凝土柱呈现出更令人满意的地震性能。由于螺旋增强液增加，因此改善了斯克分柱的滞后特性，峰值强度，延展性和能量耗散能力。开发的滞后模型在循环载荷下提供了对Sixc柱的可靠预测。 （c）2020作者。 elsevier有限公司出版

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