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本文是在苏联A.A.格沃兹捷夫教授等对构件断面抗裂计算所提方法的基础上,另行推导精确公式。在本文中,除载有适用于任意断面的公式以外,还专门对最常遇到的构件断面(矩形、T形及I字形等)提出了简便的计算公式,度坿有计算所需的图线。理论上在公式中应採用混凝土的折算断面,但经验证明,钢筋面积对于断面几何特征的影响是很小的,可以略去不计,在经过这样简化后,利用本文公式及所坿图线来进行计算,则速度甚快,精确度相当高,同样概念亦非常清楚。
This article is based on the method proposed by Prof. A.A. Głodzev of the Soviet Union to calculate the fracture resistance of member sections, and derives the exact formula. In this paper, in addition to formulas that apply to arbitrary sections, a simple calculation formula for the most commonly encountered member sections (rectangle, T-shape, I-shape, etc.) is provided. line. Theoretically, the concrete conversion section should be used in the formula, but experience has shown that the influence of the area of the rebar on the geometry of the section is very small and can be omitted. After such simplification, the formula and the map are used to carry out the formula. For calculation, the speed is very fast and the accuracy is quite high. The same concept is also very clear.