玻璃钢/复合材料 ›› 2009, Vol. 209 ›› Issue (3): 23-27.

• 基础研究 • 上一篇    下一篇

玄武岩纤维布与木材粘结-滑移本构关系的试验研究

汪健根1,杨勇新1 ,胡玲1,庄荣忠2   

  1. 1.华侨大学土木工程学院, 泉州362021;2.北京中外建建筑设计有限公司, 厦门360012
  • 出版日期:2009-05-28 发布日期:2009-03-25
  • 作者简介:汪健根(1982),男,硕士研究生,主要从事结构加固方面的研究。
  • 基金资助:

    国家科技攻关(国际合作)项目(2005DFBA0002);澳门特别行政区科学技术发展基金课题“高性能纤维增强复合材料(FRP)加固古建筑文物的研究与应用”(524/263/SAF/2008)

EXPERIMENTAL STUDY ON BONDSLIP BEHAVIOR BETWEEN BFRP AND WOOD

  • Online:2009-05-28 Published:2009-03-25

摘要:

FRP木材界面的粘结滑移关系是外贴纤维增强聚合物加固木结构受力分析的基础。对18块贴玄武岩纤维布试件的粘结性能进行试验研究,考察了贴布层数和BFRP粘结长度对粘结性能的影响,分析了BFRP应变和局部粘结剪应力发展及分布规律,计算得到局部粘结应力滑移关系曲线。通过对试验结果的统计回归分析,基于Popovics模型提出了福杉顺纹方向的局部粘结应力滑移本构关系模型,该模型与试验结果吻合较好,对于实际加固工程应用和相应规范的完善具有参考价值。

关键词: BFRP, 木材, 粘结应力, 滑移, 本构模型

Abstract:

The FRPtowood bondslip model is the fundamental relationship to analyze the behavior of the fiber reinforced polymerstrengthened wood structures Eighteen specimens through externally bonded BFRP plates were employed to study the bond behavior between BFRP and wood The influences of the bond length, and the number of layers was investigated Based on the experimental study on the bond behavior between BFRP and wood, the strain development and distribution in BFRP sheet were analyzed, and the direct shear bond stress distribution and local bond stress versus slippage relationship were obtained in this paper Based on the Popovics model, a local bond stressslip constitutive model of fir grain direction was proposed by the statistical regression analysis of the test results The model matches the experimental results well, and is available references for the practical applications and corresponding codes

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