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首页> 外文期刊>Magazine of Concrete Research >Study of compressive behaviour of FRP-recycled aggregate concrete-steel stub columns
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Study of compressive behaviour of FRP-recycled aggregate concrete-steel stub columns

机译：FRP再生骨料-混凝土短柱的抗压性能研究

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摘要

Fibre-reinforced polymer (FRP) recycled aggregate concrete (RAC)-steel columns are a proposed novel form of composite based on hybrid FRP-concrete-steel double-skin tubular columns and, combined with RAC, greatly benefit our sustainable resources and fully exploit the advanced mechanical properties of every component of these composites. To gain an in-depth understanding of the compressive behaviour of FRP-RAC-steel columns (FRSCs) and to examine whether the existing bearing capacity models for other confined concrete columns are applicable to FRSCs, 15 basalt FRSCs were tested by subjecting them to monotonic axial compression. The main parameters investigated were the diameter-to-thickness ratio of the steel tube and the recycled coarse aggregate (RCA) replacement ratio. The test results showed that the compressive behaviour of FRSCs generally enhanced with a decrease in the diameter-to-thickness ratio of the steel tube, and that the FRSCs with RCA replacement ratios of 30% and 70% tended to have better ultimate bearing capacity and axial shortening. Three typical stress-strain models were checked to predict the ultimate bearing capacity of FRSCs, and values calculated from Yu's model coincided well with the test results.
机译：纤维增强聚合物（FRP）再生骨料（RAC）-钢柱是基于混合FRP-混凝土-钢双皮管柱的一种新型复合材料形式，与RAC结合使用，极大地有利于我们的可持续资源并得到充分利用这些复合材料各组分的先进机械性能。为了深入了解FRP-RAC钢柱（FRSC）的抗压性能，并检查现有的其他承压混凝土柱承载力模型是否适用于FRSC，对15种玄武岩FRSC进行了单调测试轴向压缩。研究的主要参数是钢管的直径与厚度之比和再生粗骨料（RCA）的替代率。试验结果表明，FRSC的压缩性能通常随着钢管直径/厚度比的降低而增强，RCA替代率为30％和70％的FRSC倾向于具有更好的极限承载力和轴向缩短。检查了三个典型的应力应变模型，以预测FRSC的极限承载力，并且从Yu模型计算得出的值与测试结果非常吻合。

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  • 来源
    《Magazine of Concrete Research》 |2019年第16期|794-808|共15页
  • 作者

    Zeng Lan; Li Lijuan; Chen Liang; Liu Feng;

  • 作者单位

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

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

    Country Garden, Foshan, Peoples R China;

    Guangdong Univ Technol, Sch Civil & Transportat Engn, Guangzhou, Guangdong, 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

    compressive strength; sustainability; testing, structural elements;

    机译：抗压强度;可持续性;测试;结构要素;

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