复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (2): 5-10.

• 基础研究 •    下一篇

纤维增强聚氨酯泡沫短柱轴压性能研究

程杰, 齐玉军*   

  1. 南京工业大学 土木学院,南京211800
  • 收稿日期:2020-05-28 出版日期:2021-02-28 发布日期:2021-03-10
  • 通讯作者: 齐玉军(1982-),男,博士,教授,主要从事新型材料及新型结构方面的研究,qiyujun@njtech.edu.cn。
  • 作者简介:程杰(1996-),男,硕士研究生,主要从事复合材料结构方面的研究。
  • 基金资助:
    国家自然科学基金面上项目(51778286);江苏省基础研究计划(自然科学基金)面上项目(BK20171469)

RESEARCH ON AXIAL COMPRESSION PERFORMANCE OF
FIBER-REINFORCED FOAMED URETHANE SHORT COLUMNS

CHENG Jie, QI Yu-jun*   

  1. College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
  • Received:2020-05-28 Online:2021-02-28 Published:2021-03-10

摘要: 纤维增强聚氨酯泡沫(Fiber-reinforced Foamed Urethane,简称“FFU”)短柱由硬质聚氨酯树脂发泡体经玻璃纤维纱束补强,以拉挤成型法制造而成。为研究不同密度的FFU短柱轴压力学性能,对三组不同密度的FFU短柱进行静力轴压试验,并与普通混凝土柱和钢柱进行对比分析。试验结果表明:高、低密度FFU短柱具有不同的轴压破坏模式;密度的增加能有效提高极限承载力、初始刚度和抵抗变形能力,但试件延性有所下降;FFU柱具有轻质高强的特点,承受相同承载力时,FFU短柱质量仅为钢筋混凝土柱的1/7及工字形截面钢柱的1/3。

关键词: 聚氨酯, 纤维增强, 短柱, 轴压性能, 复合材料

Abstract: Fiber-reinforced Foamed Urethane (FFU) short columns are made of rigid polyurethane resin foam reinforced with glass fiber yarn bundles and manufactured by pultrusion. In order to study the axial compression performance of FFU short columns with different densities, three groups of FFU short columns with different densities were subjected to static axial compression tests and compared with ordinary concrete columns and steel columns. The test results show that the high- and low-density FFU short columns have different axial compression failure modes. As the density increases, the ultimate bearing capacity, initial stiffness and resistance to deformation will increase. However, the ductility of the specimen will decrease. FFU column has the characteristics of light weight and high strength. Under the same bearing capacity, the mass of FFU short columns is only 1/7 of reinforced concrete columns and 1/3 of I-shaped steel columns.

Key words: polyurethane, fiber-reinforced, short column, axial compression performance, composites

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