通过公式预测钢筋混凝土梁截面的抗弯能力

Trọng Hữu Ngô
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引用次数: 0

摘要

本文介绍了用回归分析方法推导矩形钢筋混凝土梁极限弯矩实用公式的过程。采用纤维法对一批常遇到的非线性RC梁截面进行分析,得到了用于回归分析的数据。通过对训练集拟合线性回归模型,再对测试集进行预测,得到实用公式。公式计算的弯矩值与非线性分析结果之间的决定系数R2为0.9948,表明公式具有较好的预测能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dự đoán khả năng chịu uốn của tiết diện dầm bê tông cốt thép bằng công thức thực hành
This paper presents the process of developing a practical formula for predicting the ultimate bending moment of rectangular reinforced concrete (RC) beams through regression analysis. The data used for regression analysis was generated by using the fiber method to analyze a non-linear batch of commonly encountered RC beam cross-sections. The practical formula was obtained by fitting a linear regression model to the training set and then making predictions on the test set. The coefficient of determination, R2, between the bending moment values calculated from the formula and the results of the non-linear analysis was 0.9948, indicating a good predictive capability of the formula.
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