本文根据受拉钢筋有效影响区的概念，首先推导出一个平均裂缝间距计算公式。

Based on the concept of the effective affecting area of tensile reinforcement, in this paper, a calculating formula of average crack distance is set up first.

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通过对加固梁平均裂缝间距、最大裂缝宽度、裂缝高度等的分析，推导出了加固梁最大裂缝宽度计算公式。

By the analysis of average crack spacing, the maximum cracks width, crack height of the reinforced beams. derived a maximum crack width formula for the reinforced beam.

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对静载作用下的高强钢筋混凝土梁进行试验研究，提出了平均裂缝间距以及裂缝宽度计算公式的改进建议。

The paper also develops the formulae for the calculation of the cracking width, and suggests how to calculate the average distance of cracking.

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