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预应力聚乙烯布加固RC梁抗弯性能试验研究

Keywords: 纤维增强聚合物,预应力,力学性能,混凝土

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Abstract:

聚乙烯纤维增强聚合物是一种具有优良延性的新型FRP(FiberReinforcedPlastic)复合材料.试验研究了预应力聚乙烯纤维布加固混凝土梁的抗弯性能,并与芳纶纤维布和非预应力聚乙烯纤维布加固混凝土梁的抗弯性能进行了对比.结果表明:与非加固标准梁、预应力芳纶纤维布加固梁相比,预应力聚乙烯纤维布加固梁的延性系数分别提高了4%和142%,即聚乙烯纤维布加固混凝土梁具有优良的延性.

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