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选取8根采用玄武岩纤维布(BFRP)U型箍加固的新疆杨木梁进行抗弯试验,针对U型箍的布置数量及位置的变化,对比分析梁的破坏现象,中性轴位置变化、承载力、挠度等性能指标。结果表明:梁未粘贴U型箍时,梁底纤维布剥落破坏;粘贴U型箍后具有一定锚固作用,随着U型箍的数量及位置变化,对梁的受弯破坏、承载力和挠度具有不同程度的影响,并且中性轴位置移动一致,均有向受压区移动的趋势。
Eight poplar beams reinforced with basalt fiber cloth (BFRP) U-hoop were selected for bending test. According to the variation of the number and location of the U-shaped hoop, the failure phenomenon of the beam, the change of the neutral axis position, the bearing capacity, Deflection and other performance indicators. The results show that when the U-shaped hoop is not attached, the fiber cloth on the bottom of the beam spalls and destroys. After the U-shaped hoop is affixed, it has certain anchoring effect. As the number and position of the U-shaped hoop changes, the bending damage, the bearing capacity and the deflection Have different degrees of influence, and the movement of the neutral axis position consistent, are moving to the compression zone trend.