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硫酸盐溶液干湿循环对FRP加固混凝土梁抗剪性能的劣化作用

李伟文, 徐文冰, 周英武, 隋莉莉, 邢锋, 管天成

李伟文, 徐文冰, 周英武, 隋莉莉, 邢锋, 管天成. 硫酸盐溶液干湿循环对FRP加固混凝土梁抗剪性能的劣化作用[J]. 北京工业大学学报, 2014, 40(8): 1226-1231.
引用本文: 李伟文, 徐文冰, 周英武, 隋莉莉, 邢锋, 管天成. 硫酸盐溶液干湿循环对FRP加固混凝土梁抗剪性能的劣化作用[J]. 北京工业大学学报, 2014, 40(8): 1226-1231.
LI Wei-wen, XU Wen-bing, ZHOU Ying-wu, SUI Li-li, XING Feng, GUAN Tian-cheng. Effect of Sulfate Solution Dry-Wet Cycling Environment on Shear Behavior of Concrete Beam Externally Bonded FRP[J]. Journal of Beijing University of Technology, 2014, 40(8): 1226-1231.
Citation: LI Wei-wen, XU Wen-bing, ZHOU Ying-wu, SUI Li-li, XING Feng, GUAN Tian-cheng. Effect of Sulfate Solution Dry-Wet Cycling Environment on Shear Behavior of Concrete Beam Externally Bonded FRP[J]. Journal of Beijing University of Technology, 2014, 40(8): 1226-1231.

硫酸盐溶液干湿循环对FRP加固混凝土梁抗剪性能的劣化作用

基金项目: 

国家自然科学基金资助项目 (51278305)

国家“973”计划资助项目 (2011CB013604)

详细信息
    作者简介:

    李伟文 (1967—) , 男, 副教授, 主要从事FRP加固技术及混凝土耐久性方面的研究, E-mail:liweiwen@szu.edu.cn

  • 中图分类号: U461;TP308

Effect of Sulfate Solution Dry-Wet Cycling Environment on Shear Behavior of Concrete Beam Externally Bonded FRP

  • 摘要: 为了研究和分析CFRP加固混凝土梁在沿海恶劣条件下的耐久性问题, 进行了人工模拟硫酸钠溶液干湿循环试验, 重点研究了硫酸盐溶液干湿循环因素对CFRP加固混凝土梁抗剪性能的劣化影响.研究结果表明:硫酸盐溶液干湿循环对加固梁极限荷载有明显影响, 极限承载力有明显下降, 对FRP的有效应变也有较大影响, 但没有改变应变的分布规律.
    Abstract: To investigate the mechanical performances of the concrete beams externally bonded fiber reinforced polymer (FRP) under severe environmental conditions, seven shear-strengthened beams with CFRP were designed and studies in the artificial accelerating test of sulfate solution dry-wet cycling degradation. Experimental results show that sulfate solution dry-wet cycling degradation affects significantly the shear behavior of shear-strengthened beams. The shear capacity of specimen decreases obviously with the time of the artificial ageing test and the FRP effective strain reduces rapidly. However, the strain distribution of FRP along the beam's longitudinal axis seems not to be influenced by the sulfate/dry-wet cycling corrosion.
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出版历程
  • 收稿日期:  2013-10-24
  • 网络出版日期:  2023-01-10

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