摘要:对8根采用高性能玻璃纤维复合材料(SGFRP)包裹加固的混凝土方柱进行轴心抗压试验,研究柱加固前的轴压比和SGFRP的粘贴层数对加固柱极限承载力的影响程度及其破坏形态.试验表明,SGFRP可以有效地提高混凝土方柱的极限承载力,并有效改善加固柱裂缝分布的均匀性,延缓裂缝的发展.粘贴一层SGFRP时加固柱的极限承载力提高近40%,粘贴两、三层时的提高幅度均约50%.同在粘贴一层的情况下,无轴压力时加固可提高极限承载力37%,轴压比为0.8时提高9%,轴压比1.1时无加固效果.
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