Based on fatigue tests, this paper studies the flexural fatigue strength of layer steel fiber reinforced concrete, and gives the flexural fatigue equation.

在疲劳试验的基础上，对上下层布式钢纤维混凝土的抗折疲劳强度进行了研究，得到了上下层布式钢纤维混凝土的抗折疲劳方程。

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The test results show that, the flexural fatigue strength of polyacrylonitrile fiber reinforced concrete beams with bottom layer steel fiber is larger than the plain concrete 15.7% ;

研究证明：底层撒布较长钢纤维的聚丙烯腈纤维混凝土梁的弯曲疲劳强度比素混凝土提高15.7％；

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According to fatigue experiment results, the fatigue equation and equation of surplus strength degradation are built. The law of degradation of flexural rigidity is analyzed.

根据疲劳试验结果，建立了预应力钢纤维混凝土板弯曲疲劳方程和剩余强度衰减方程，分析了抗弯刚度衰减规律。

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