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FRP-钢管-混凝土构件抗震性能试验研究

, PP. 180-186

Keywords: GFRP-钢管-混凝土,CFRP-钢管-混凝土,拟静力试验,组合荷载,耗能

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Abstract:

为了研究低周循环往复荷载作用下GFRP(glassfiberreinforcedpolymer)-钢管-混凝构件的力学性能以及对比CFRP(carbonfiberreinforcedpolymer)-钢管-混凝土构件的性能差异,对尺寸相同而加固方式不同的圆形截面FRP(GFRP、CFRP)-钢管-混凝土试件进行了拟静力试验,荷载采用轴压、双向弯曲的组合来模拟地震动力。结果表明:FRP(GFRP、CFRP)的加固可以有效地提高构件抗动态弯曲的能力;GFRP-钢管-混凝土构件延性高于相同情况下CFRP-钢管-混凝土构件;与普通钢管-混凝土相比,环向、纵向和双向包裹的GFRP-钢管-混凝土构件的耗能系数分别提高2.0%、7.0%和12.7%,而CFRP-钢管-混凝土分别提高2.0%、5.8%和6.7%。

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