摘   要：近年来，钢纤维已在建设工程中应用，但是钢纤维较为高昂的价格限制了其更广泛的工程应用。作为一种绿色建筑材料，竹纤维在混入混凝土之后可以改进混凝土的各项力学性能，利于提升大体积混凝土的抗裂、抗收缩与抗冲击能力。本文用自行设计的冲击试验装置对竹、钢纤维混杂纤维混凝土试件进行了冲击试验，对比了不同组别试块的冲击试验结果，分析了混杂纤维对混凝土抗冲击性能的影响。

Abstract：In recent years, the steel fiber has been applied in the construction project. But because of the high price, the application range of the steel fiber is limited. As a kind of green building material, the bamboo fiber can be used to add in the concrete, which can improve the mechanical performance of the concrete, such as the crack resistance, shrinkage resistance and impact resistance of the mass concrete. Here, the impact test of the concrete specimen reinforced with bamboo fiber and steel fiber is carried out by the self-designed test device. Meanwhile, the impact test results of blocks of the different groups are compared, and the influence of the hybrid fiber on the impact resistance of the concrete is analyzed.