中文摘要：

简述了中国不同时期的混凝土设计规范对非抗震情况和抗震情况下受拉钢筋最小配筋率的取值及确定原则,同时对比分析了各国混凝土设计规范中2种情况下混凝土受弯构件受拉钢筋最小配筋率的规定及确定方法;通过实例对各国规范的最小配筋率取值进行了比较,建议了最小配筋率的确定原则。结果表明：各国规范多以＂截面开裂后,构件不致立即失效＂为确定最小配筋率的原则,但对非抗震构件所取的最小配筋率相差较大,对抗震区最小配筋率的取值,除中国规范偏低外,其他国家规范大体相当。

英文摘要：

Authors simply analyzed the minimum reinforcement ratio and its determination principles under the non-seismic-resistance and seismic-resistance situations,which were referred to the Chinese concrete design codes in different periods.Meanwhile,the values and determinations of the minimum reinforcement ratio of tensile reinforcement for concrete flexural members under two circumstances were comparative analyzed.Limiting values of the minimum reinforcement ratios in different codes were compared through an example,and the method to determine the minimum reinforcement ratios was suggested.The results show that the concrete design codes of different countries described ＂the member is not failure immediately after cracking＂ as the principle to determine the minimum reinforcement ratio.There is a big difference on the minimum reinforcement ratio for non-seismic-resistance member in each code,but for seismic-resistance area,the reinforcement ratio is quite similar in each code,except that the reinforcement ratio in Chinese code is lower than the others.