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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再生骨料混凝土钢柱压缩行为研究

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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）再循环骨料混凝土（RAC） - 钢柱是一种基于混合FRP - 混凝土 - 钢双皮管柱的提出的组合式复合材料，以及加上RAC，极大地使我们的可持续资源充分利用这些复合材料的每个组件的高级机械性能。为了深入了解FRP-RAC钢柱（FRSC）的压缩行为，并检查其他限制混凝土柱的现有承载力模型是否适用于FRSC，通过使其进行单调来测试15个玄武岩FRSCS轴向压缩。研究的主要参数是钢管的直径到厚度比和再循环粗骨料（RCA）更换比。测试结果表明，FRSCs的压缩行为通常随着钢管直径与厚度比的降低而增强，并且RCA替换比率为30％和70％的FRSC倾向于具有更好的最终承载力和轴向缩短。检查了三种典型的应力 - 应变模型，以预测FRSCS的最终承载力，以及由yu模型计算的值与测试结果相互作用。

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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;结构元素;

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