童岳生同志在A·A·格沃茲捷夫教授等所提方法的基础上,得出了精确的鋼筋混凝土构件的抗裂公式。 但B·B·米哈依洛夫、A·A·格沃茲捷夫以及童同志的公式,都是建立在受压区的应力图为三角形,受拉区的应力图为矩形,其拉应力值为R_p这一原則上的。这与断面高 Comrade Tong Yuesheng, on the basis of the methods proposed by Prof. A. A. Gwotztev et al., obtained accurate crack resistance formulae for reinforced concrete members. But the formulas of B.B.Mikhailov, A.A. Gwodziev, and Tong Tongzhi are all based on the triangular stress map in the compression zone, and the rectangular stress map in the tension zone. The value is R_p in principle. This is high with the section