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提出了在混凝土抽拉和弯曲试验中确定不连续点的一种新方法———线性相关系数陡降法，并用试验数据对其进行了验证，得到的不连续点强度的计算结果令人满意．讨论了本文方法计算所得不连续点应变的精度较差的原因．
A new method to determine discontinuity in concrete drawing and bending test, which is called the steep descending method of linear correlation coefficient, was proposed and validated by experimental data. The calculation results of the discontinuity intensity obtained are satisfactory . The reasons for the poor accuracy of discontinuity strain calculated by this method are discussed.