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钢纤维砼应用于钢筋砼构件 ,能显著提高构件的抗弯、抗剪及延伸性能 .选取 8根试验梁进行了正截面受弯性能试验 ,通过钢纤维对平均裂缝间距、钢筋应变不均匀系数和钢筋应力的影响分析 ,提出了正常使用条件下与普通钢筋砼梁最大裂缝宽度的计算方法相衔接的钢筋钢纤维增强部分砼梁裂缝宽度的计算方法 .结果表明 ,部分地加入钢纤维的砼梁构件能达到全截面增强的效果 .实际应用中能显著减少钢纤维的用量 ,具有较好的经济效益 .
The application of steel fiber reinforced concrete to reinforced concrete members can remarkably improve the flexural, shear and extension properties of the members.Selecting the eight test beams, the flexural behavior of normal section was tested and the average crack spacing, And the influence of the stress on the steel bar, a calculation method of the crack width of the reinforced concrete beam reinforced with steel fiber under normal conditions is proposed, which is connected with the calculation method of the maximum crack width of the common reinforced concrete beam.The results show that the part of steel fiber reinforced concrete Beam components can achieve the effect of full cross-section enhancement in practical applications can significantly reduce the amount of steel fiber, with good economic benefits.