HPFL二次受力加固RC偏压柱试验研究

Experimental investigation into the strengthening of eccentrically compressed RC column using HPFL under twice loading

文章介绍了所研发的工作性能良好的柱二次受力加固试验装置FBSH,并对4根近似足尺偏压柱进行了试验测试,这些柱采用高性能水泥复合砂浆钢筋网薄层(HPFL)进行了二次受力加固;将试验结果与同参数的未加固柱和一次受力加固柱进行了比较和分析,研究了一次受力应力水平指标β对二次受力加固柱的承载力、延性、刚度以及开裂模式的影响规律,并分析了试验中的徐变现象。

The test setup FBSH of twice-loading strengthened columns, which possesses excellent working function, is first developed in this paper. By FBSH, four approximate full-size eccentric col- umns strengthened hy high performance ferroeement laminate（HPFL） under twice loading are tested. The test results are compared with those nonstrengthened and onetime-loading strengthened columns with same parameters, and the influential laws of initial stress factor/？ on the load-bearing capacity, ductility, stiffness, and cracking mode of twice-loading strengthened columns are researched. The creeping behavior of columns during testing process is also analyzed.