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| 钢纤维在梁截面的分布及其对混凝土梁弯曲韧性的影响 | |
| 引用本文： | 范树华,覃霜,丁一宁.钢纤维在梁截面的分布及其对混凝土梁弯曲韧性的影响[J].工业建筑,2013,43(2):104-109. |
| 作者姓名： | 范树华 覃霜 丁一宁 |
| 作者单位： | 1. 大连理工大学,辽宁大连116024;烟台市建筑设计研究股份有限公司,山东烟台264003 2. 中国中元国际工程公司,北京,100089 3. 烟台市建筑设计研究股份有限公司,山东烟台,264003 |
| 基金项目： | 国家自然科学基金项目(51078058) |
| 摘 要： | 参照德国混凝土标准(DBV)对纤维混凝土试验梁弯曲韧性进行研究。在此基础上统计分析了钢纤维在混凝土试验梁破坏截面的分布及其对弯曲性能的影响。结果表明:对于相同掺量的钢纤维混凝土梁,纤维在破坏截面的分布有较大的离散;韧性总体上随纤维掺量的增加呈增大趋势,但也存在纤维掺量较高但截面纤维根数较低且韧性较低的试验梁;通过对统计数据进行线性回归,建立纤维掺量与单位面积纤维根数的函数关系,预测不同纤维掺量时破坏截面的纤维根数。试验表明,与纤维掺量相比,纤维分布是影响梁弯曲韧性更为直接的因素。 |
| 关 键 词： | 弯曲韧性 纤维分布 纤维根数 纤维间距 |
STEEL FIBER DISTRIBUTION AND ITS EFFECT ON THE TOUGHNESS OF STEEL FIBER CONCRETE BEAMS |
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| Fan Shuhua,Qin shuang,Ding Yining.STEEL FIBER DISTRIBUTION AND ITS EFFECT ON THE TOUGHNESS OF STEEL FIBER CONCRETE BEAMS[J].Industrial Construction,2013,43(2):104-109. | |
| Authors: | Fan Shuhua Qin shuang Ding Yining |
| Affiliation: | 1(1.Dalian University of Technology,Dalian 116024,China;2.Yantai Architectural Design and Research Co. Ltd,Yantai 264003,China;3.China IPPR International Engineering Corporation,Beijing 100089,China) |
| Abstract: | Based on the investigation on the flexural toughness according to DBV,it was analysed the steel fiber distribution in the cross-section of testing beams.The results indicated that steel fiber distribution in the failure section could have a high scatter for different beams with the same fiber content;the relationship between the fiber content and fiber number per unit cross-sectional area was established by the linear regression of the statistical data,which could predict the fiber number at the damaged section in case of different fiber content.The test results showed that the toughness of the beam could be significantly affected by the fiber distribution in the cross section. |
| Keywords: | flexural toughness fiber distribution fiber number fiber distance |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |