中国、美国、欧洲混凝土规范的裂缝宽度计算
Calculation of crack width of Chinese,American and European concrete codes
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摘要: 运用国内外钢筋混凝土受弯构件的短期裂缝宽度试验资料,从计算方法、计算参数及计算精度3个方面对中国、美国、欧洲混凝土规范的裂缝宽度计算模式进行了比较分析.在此基础上,结合我国规范的裂缝宽度计算模式,提出了钢筋混凝土受弯构件最大裂缝宽度计算的建议公式.结果表明,建议公式计算值与实测值符合得更好.Abstract: The calculating modes of crack width of Chinese,American and European concrete codes were compared considering their calculating methods, parameters and precisions according to the previous experimental data of short-term crack width of reinforced concrete flexural members.Based on the comparison and the calculating mode of crack width of Chinese concrete code,the suggested formula for maximum crack width of reinforced concrete flexural members was proposed.The results showed that the calculating values of suggested formula agreed well with the test ones.
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Key words:
- high-strength steel bars /
- flexural member /
- crack width calculating mode /
- concrete code
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