钢纤维混凝土低剪力墙抗震性能试验研究

Seismic behavior of steel fiber reinforced concrete low-rise shear wall

对不同钢纤维体积率、相同钢纤维混凝土强度的5个钢筋钢纤维混凝土低剪力墙试件以及不同钢纤维混凝土强度、相同钢纤维体积率的2个钢筋钢纤维混凝土低剪力墙试件,进行了低周反复荷载作用下的试验研究,分析了剪力墙的延性、滞回性能和耗能能力等,研究了钢纤维体积率和钢纤维混凝土强度对钢筋钢纤维混凝土低剪力墙的延性及耗能能力的影响。试验和分析结果表明:掺加钢纤维的钢筋混凝土低剪力墙的延性、耗能能力都比普通钢筋混凝土低剪力墙明显提高,抗震性能良好。

With the low frequency cyclic loading, the experimental researches were carried out on 5 low-rise steel fiber reinforced concrete shear wails with the same concrete strength but different volume fractions of steel fibers and 2 low-rise steel fiber reinforced concrete shear walls with the same volume fraction of steel fibers but different concrete strengths. The ductility, hysteretic capacity, and energy dissipation of shear walls were analyzed. The effects of the volume fraction of steel fibers and concrete strength on the ductility and energy dissipation of shear walls were studied. The results indicate that compared to ordinary R. C. shear wall, the ductility, energy dissipation of steel fiber reinforced concrete low-rise shear wails were improved obviously, and steel fiber reinforced concrete low-rise shear walls have good seismic behavior.