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首页> 外文期刊>Thin-Walled Structures >Experimental study of seismic performance of full-scale basalt FRP-recycled aggregate concrete-steel tubular columns
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Experimental study of seismic performance of full-scale basalt FRP-recycled aggregate concrete-steel tubular columns

机译：全尺寸玄武岩FRP再生骨料混凝土钢管柱地震性能的实验研究

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摘要

Hybrid fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular columns (DSTCs) have received extensive attention in the research community over the past decade. Generally, a DSTC consists of an inner steel tube and an outer FRP tube, with the space between them filled with natural aggregate concrete (NAC). This paper studied a new form of hybrid FRP-recycled aggregate concrete (RAC)-steel tubular column (FRSTC) in which the outer FRP tube was made of environmental-friendly basalt fibers and the concrete was made of recycled coarse aggregates (RCAs). Quasi-static tests of five full-scale basalt FRSTCs were conducted to gain an improved understanding of the behavior of FRSTCs, and to enable further application potentiality of FRSTCs in earthquake-prone areas. Three key column parameters, including RCA replacement percentages, axial load ratios, and steel reinforcement ratios were carefully designed to clarify their influence on the performance of FRSTCs under combined axial compression and cyclic lateral loading. The test results, including the hysteretic loops, skeleton curves, curvature and strain distributions, ductility characterization, energy dissipation capacity, stiffness and strength degradation, and cumulative damage, are presented and discussed. The experimental results show that the RCA replacement percentage has little impact on the seismic performance of FRSTCs, while the effect of the axial load ratio is significant. The bearing capacity and energy dissipation of FRSTCs can be superior to those of DSTCs with NAC.
机译：杂化纤维增强聚合物（FRP） - 钢钢双皮管柱（DSTC）在过去十年中受到研究界的广泛关注。通常，DSTC由内钢管和外FRP管组成，它们之间的空间填充有天然骨料混凝土（NAC）。本文研究了一种新型的混合FRP再循环骨料混凝土（RAC） - 螺旋管柱（FRTTC），其中外FRP管由环保型玄武岩纤维制成，混凝土由再生粗骨料（RCA）制成。进行了五个全规模玄武岩FRSTC的准静态试验，以提高对FRSTC的行为的了解，并能够进一步应用FRSTC在地震 - 易发的地区的潜力。仔细设计了三个关键柱参数，包括RCA更换百分比，轴向载荷比和钢筋比率，以阐明它们对轴向压缩和循环横向载荷下FRSTC的性能的影响。提出和讨论了测试结果，包括滞后环，骨架曲线，曲率和应变分布，延展性表征，能量耗散能力，刚度和累积损坏。实验结果表明，RCA替代百分比对FRSTC的地震性能影响几乎没有影响，而轴向载荷比的效果显着。 FRSTC的承载力和能量耗散可以优于与NAC的DSTCS的能力和能量耗散。

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  • 来源
    《Thin-Walled Structures》 |2020年第6期|106185.1-106185.18|共18页
  • 作者

    Zeng Lan; Li Lijuan; Xiao Peijie; Zeng Junjie; Liu Feng;

  • 作者单位

    Jinan Univ Sch Mech & Construct Engn MOE Key Lab Disaster Forecast & Control Engn Guangzhou 510632 Peoples R China|Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Peoples R China;

    Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Peoples R China;

    Guangdong Planning & Designing Inst Telecommun Co Guangzhou 510630 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 Peoples R China;

    Guangdong Univ Technol Sch Civil & Transportat Engn Guangzhou 510006 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

    Basalt fiber-reinforced polymer (BFRP) tube; Recycled aggregate concrete (RAC); Steel tube; Composite column; Seismic behavior; Quasi-static test;

    机译：玄武岩纤维增强聚合物（BFRP）管;再生骨料混凝土（RAC）;钢管;复合柱;地震行为;准静态试验;

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