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本文扼要讨论了包括下降段在内的完整的混凝土轴压应力——应变曲线;总结介绍了国内外研究者所建议的应力——应变曲线的近似表达式;重点评述了若干表达式;对P.T.Wang等人建议的公式提出了修改意见;建议使用统计分析方法直接由混凝土标号确定应力——应变关系,本文提出了一个表达式并以我国天津大学最近所做的试验为依据进行了比较,吻合较好。
This article briefly discusses the complete concrete axial compressive stress-strain curve including the descending section; summarizes the approximate expressions of stress-strain curves proposed by researchers at home and abroad; and reviews several expressions; The formula suggested by Wang et al. proposes amendments; it is recommended to use statistical analysis methods to determine the stress-strain relationship directly from the concrete markings. This paper proposes an expression and compares them based on recent experiments conducted by Tianjin University in China. better.