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8月中旬,我部收到著名水利专家、清华大学张光斗教授的来信。信中指出:“贵刊1992年第2期《混凝土容许应力研究》,作者做了大量的实验室试验研究,在不同试件形状和欠寸以及不同荷载条件下,得出混凝土的容许可用强度是很有意义的。但是本文题目为《混凝土容许应力研究》,而混凝土的容许应力是与荷载计算方法和安全系数配套的,单纯研究混凝土容许强度,是不可能确定拱坝中的容许应力的。例如用有限元法计算应力时,就很难用目前规范的安全系数,所以研究混凝土的容许应力是当前十分重要的课题。计算方法用有限
In mid-August, I received a letter from a famous water conservancy expert and Professor Zhang Guangdou from Tsinghua University. The letter pointed out: “Your 1992 issue of 2” allowable stress of concrete “, the author has done a large number of laboratory tests to study the shape of the different specimens and under-inches and under different load conditions, the concrete obtained allowable strength However, the subject of this paper is ”Study on Concrete Permissible Stress", and the allowable stress of concrete is matched with load calculation method and safety factor. It is impossible to determine the allowable stress in arch dam simply by studying the allowable strength of concrete For example, when using finite element method to calculate stress, it is very difficult to use the current standard safety factor, so to study the allowable stress of concrete is a very important issue at present.