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Comparative analysis of the seismic behaviour of SRUHSC columns and frames under reverse cyclic loading

机译:反向循环荷载下SRUHSC柱和框架的抗震性能比较分析

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摘要

Comparative analyses are conducted on experiments in which steel-reinforced ultra-high-strength concrete (SRUHSC) columns and SRUHSC frames are tested under reverse cyclic loadings. The main purpose of this study is to investigate the influence of axial compression ratio on the seismic performance of SRUHSC columns and SRUHSC frames and to examine the distinction between the seismic behaviour of individual columns and that of the frame structures. Taking axial compression ratio as the primary study parameter, the failure mode, hysteresis curve, skeleton curve, stiffness degradation, energy dissipation capacity and residual displacement of the SRUHSC column and SRUHSC frame are systematically analysed. The analysis results show that, with the increase of axial compression ratio, individual SRUHSC columns are characterised by bending failure, whereas SRUHSC frames are characterised by bending-bond failure. Consequently, the deterioration of seismic performance is observed when comparing SRUHSC frames with individual columns, and the reduction factor should be considered if the seismic design of SRUHSC frame structures is based on the performance evaluation of individual columns.
机译:在实验中进行了对比分析,在该实验中,在反向循环荷载下对钢骨超高强度混凝土(SRUHSC)柱和SRUHSC框架进行了测试。本研究的主要目的是研究轴向压缩比对SRUHSC柱和SRUHSC框架的抗震性能的影响,并检验各个柱与框架结构的抗震性能之间的区别。以轴向压缩比为主要研究参数,系统分析了SRUHSC柱和SRUHSC框架的破坏模式,滞回曲线,骨架曲线,刚度下降,能量耗散能力和残余位移。分析结果表明,随着轴向压缩比的增加,单个SRUHSC柱的特征是弯曲破坏,而SRUHSC框架的特征是弯曲粘结破坏。因此,在将SRUHSC框架与各个柱子进行比较时会观察到抗震性能的下降,如果SRUHSC框架结构的抗震设计是基于各个柱子的性能评估,则应考虑减小系数。

著录项

  • 来源
    《Magazine of Concrete Research》 |2018年第4期|189-203|共15页
  • 作者单位

    Dalian Univ Technol, Sch Civil Engn, State Key Lab Coastal & Offshore Engn, Dalian, Liaoning, Peoples R China;

    Dalian Univ Technol, Sch Civil Engn, State Key Lab Coastal & Offshore Engn, Dalian, Liaoning, Peoples R China;

    Changan Univ, Sch Highway, Xian, Shaanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    composite materials; compressive strength; loads loading;

    机译:复合材料;抗压强度;载荷与载荷;
  • 入库时间 2022-08-18 00:16:30

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