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为进一步探究纤维编织网增强混凝土(textile reinforced concrete,TRC)加固混凝土柱的轴心受压性能,研究纤维编织网层数、纤维编织网搭接长度及使用短切纤维改性精细混凝土作为TRC基体等因素对TRC加固混凝土柱轴心受压性能的影响。结果表明:TRC加固素混凝土方柱的破坏形态和延性得到改善,承载力提高幅度达17.32%;对于TRC加固RC柱,纤维编织网搭接长度、短切纤维改性精细混凝土对TRC约束效果影响不明显,但随着纤维编织网层数的增加,TRC约束效果明显提高,TRC加固RC柱的延性得到改善,承载力提高幅度最高可达14.74%。最后对TRC加固RC柱的极限承载力计算进行推导,并给出计算模型。研究结果可为TRC加固混凝土柱的工程应用提供参考。
In order to further investigate the axial compression behavior of reinforced concrete columns reinforced with textile braided concrete (TRC), the relationship between the number of fiber braid layers, the lap length of fiber braid and the use of modified concrete with chopped fiber as TRC matrix Influences of Factors on Axial Compressive Strength of TRC Reinforced Concrete Columns. The results show that the failure morphology and ductility of TRC reinforced concrete square column are improved, and the bearing capacity is increased by 17.32%. For the TRC reinforced RC column, the lap length of fiber braid and the effect of the short-cut fiber modified fine concrete on the restraint effect of TRC However, as the number of fiber braid layers increases, the restraint effect of TRC is obviously improved. The ductility of TRC reinforced RC columns is improved, and the bearing capacity can be increased up to 14.74%. Finally, the calculation of the ultimate bearing capacity of RC columns strengthened by TRC is deduced and the calculation model is given. The results can provide reference for engineering application of TRC reinforced concrete columns.