The rapid reinforcement of reinforced concrete members is one of the research hotspots in the field of structural reinforcement. In this paper, the packaging technology is applied to the field of reinforced concrete structure reinforcement, and new technology of composite reinforcement of prestressed plastic steel strips and angle steel is proposed. Furthermore, in this work, axial compression tests of three prestressed plastic steel strips-angle steel composite reinforced concrete columns and one unreinforced reinforced concrete column were carried out and studied the prestressed plastic steel strips-clad steel composite reinforcement and plastic steel strips. Furthermore, the effect of different reinforcement spacings on the failure characteristics, bearing capacity, and ductility of components were studied. The test results show that the failure characteristics of the reinforced concrete columns reinforced with prestressed plastic-steel strips and angle steels were the same as those of unreinforced specimens. However, the initial cracking load of the reinforced specimens was found to be greater and as the spacing of plastic-steel strips increased, the bearing capacity also increased. Moreover, their values were found to be 36.6%, 13.6%, and 8.2%, and the maximum increase in the limit displacement was 92.9%, 52.7%, and 22.6%, respectively. From the results, it was observed that the composite reinforcement technology could improve the ultimate bearing capacity and the ductility of components and has a good application value.

中文翻译：

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预应力塑钢带与角钢复合加固钢筋混凝土柱的轴压试验研究

钢筋混凝土构件的快速加固是结构加固领域的研究热点之一。本文将打包技术应用于钢筋混凝土结构加固领域，提出了预应力塑钢带与角钢复合加固新技术。此外，本工作还对3根预应力塑钢带-角钢复合钢筋混凝土柱和1根无钢筋混凝土柱进行了轴压试验，研究了预应力塑钢带-钢复合钢筋和塑钢带的轴压试验。此外，研究了不同钢筋间距对构件破坏特性、承载能力和延性的影响。试验结果表明，采用预应力塑钢带和角钢加固的钢筋混凝土柱的破坏特性与无钢筋试件相同。然而，发现增强试样的初始开裂载荷更大，并且随着塑钢带间距的增加，承载能力也增加。此外，它们的值分别为 36.6%、13.6% 和 8.2%，极限位移的最大增幅分别为 92.9%、52.7% 和 22.6%。结果表明，复合加固技术可以提高构件的极限承载力和延展性，具有良好的应用价值。