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本文根据水工钢筋砼规范SDJ_(20-78)中有关计算各种受力构件的最大裂缝宽度及其限值的规定,推导出不需作裂缝宽度验算的最大钢筋直径d_2计算公式,并以相对抗裂强度λ_1和配筋率μ为变量绘制d_λ的实用计算图表。简单实用。
In this paper, according to the provisions of the hydraulic concrete specification SDJ_ (20-78) for calculating the maximum crack width and its limit value of various force components, the formula of the maximum reinforcement diameter d_2 without checking the crack width is deduced. The relative crack-resistant strength λ_1 and the reinforcement ratio μ for the variable d_λ are plotted as a practical calculation chart. Simple and practical.