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为探究混杂钢-聚丙烯纤维混凝土力学性能,基于复合材料强度理论,在试验研究的基础上,对混凝土强度对比试验结果进行数值分析,并根据试验结果规律,给出了混杂钢-聚丙烯纤维混凝土立方体抗压强度、劈裂抗拉强度和轴心抗拉强度的计算式,以及各强度间的关系。通过数理统计方法分析研究了混杂纤维混凝土中纤维体积率、长径比对强度的影响,确定了计算模式中的待定参数。从强度计算式中不同纤维对应的影响系数可以看出,对混杂钢-聚丙烯纤维混凝土的强度起决定作用的是钢纤维的体积率和长径比;混杂钢-聚丙烯纤维混凝土的强度计算式与关系式拟合效果良好,可为同行业研究者们和工程应用提供参考。
In order to explore the mechanical properties of the hybrid steel-polypropylene fiber reinforced concrete, based on the experimental study, the numerical results of the concrete strength comparison test are given. Based on the experimental results, the hybrid steel-polypropylene fiber Concrete cube compressive strength, splitting tensile strength and axial tensile strength of the formula, as well as the relationship between the strength. The effects of fiber volume fraction and aspect ratio on the strength of hybrid fiber reinforced concrete were studied by means of mathematical statistics, and the parameters to be determined in the calculation mode were determined. From the influence coefficient of different fibers in the calculation formula of the strength, it can be seen that the volume fraction and the aspect ratio of the steel fiber are decisive for the strength of the hybrid steel-polypropylene fiber reinforced concrete. The strength of the hybrid steel-polypropylene fiber reinforced concrete Good fit between the formula and the relationship, for the same industry researchers and engineering applications provide a reference.