THE RESEARCH ON SHEAR CAPACITY OF RC BEAMS STRENGTHENEDWITH BFRP SHEETS
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摘要: 通过对5根玄武岩纤维加固混凝土梁的试验,研究了玄武岩纤维布对梁的抗剪承载力的影响和作用。主要考虑的参数有:玄武岩纤维布的宽度和间距、玄武岩纤维布的粘贴层数等因素。试验结果表明,玄武岩纤维布能够明显提高钢筋混凝土的抗剪承载力,并且能改善构件的变形能力。提出了适合工程应用的承载力计算设计公式。Abstract: Five simply supported beams strengthened by basalt fiber reinforced polymer(BFRP) are tested. The experimental factors are width and spacing of BFRP strips, layers of BFRP. The experimental results indicate that BFRP can evidently increase the shear strength and improve the ductility of these specimens. A design formula is proposed.
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Key words:
- BFRP sheets /
- RC beams /
- strengthening /
- shear strength
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[2] 过镇海. 钢筋混凝土原理[M]. 北京: 清华大学出版社, 2003. GB 50367-2006 混凝土结构加固设计规范[S]. [3] Triantafillou T C. Shear Strengthening of Reinforced Concrete Beams Using Epoxy-Bonded FRP Composites [M]. ACI Structural Journal, March-April 1998. [4] 吴刚. 碳纤维布用于钢筋混凝土梁抗剪加固的试验研究[J]. 建筑结构, 2000(7): 13-16. [5] 欧阳煜. 玻璃纤维片材加固混凝土梁的抗剪试验研究[J]. 建筑结构, 2002(10)
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