钢纤维在梁截面的分布及其对混凝土梁弯曲韧性的影响

范树华; 覃霜; 丁一宁

doi:10.13204/j.gyjz201302021

钢纤维在梁截面的分布及其对混凝土梁弯曲韧性的影响

doi: 10.13204/j.gyjz201302021

1.
1. 大连理工大学,辽宁大连116024;
2.
2. 烟台市建筑设计研究股份有限公司,山东烟台264003;
3.
3. 中国中元国际工程公司,北京100089

基金项目:

国家自然科学基金项目(51078058)

详细信息

作者简介:
范树华,女,1987年出生,硕士研究生. 电子信箱:ynding@hotmail.com

中图分类号: TU528.572
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- 文章访问数: 115
- HTML全文浏览量: 10
- PDF下载量: 58
- 被引次数: 0
出版历程
- 收稿日期: 2012-01-10
- 刊出日期: 2013-02-20

STEEL FIBER DISTRIBUTION AND ITS EFFECT ON THE TOUGHNESS OF STEEL FIBER CONCRETE BEAMS

1.
1. Dalian University of Technology,Dalian 116024,China;
2.
2. Yantai Architectural Design and Research Co. Ltd,Yantai 264003,China;
3.
3. China IPPR International Engineering Corporation,Beijing 100089,China

摘要

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。
- 弯曲韧性 /
- 纤维分布 /
- 纤维根数 /
- 纤维间距
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.
- flexural toughness /
- fiber distribution /
- fiber number /
- fiber distance

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参考文献(7)

丁一宁,刘思国.钢纤维自密实混凝土弯曲韧性和剪切韧性试验研究[J].建筑材料学报,2010,43(11):55-63.

[2] Gettu R, Gardner D R, Saldivar H. Study of the Distribution andOrientation of Fibers in SFRC Specimens[J]. Materials andStructures 2005,38(5):31-37.

[3] David Dupont, Lucie Vandewalle. Distribution of Steel Fibres inRectangular Sections[J]. Cement and Concrete Composites,2005,27(3):391-398.

[4] Parviz soroushian, Cha-Don lee. Distribution and Orientation ofFibers in Steel Fiber Reinforced Concrete[J]. ACI MaterialsJournal,1990,87(5):433-439.

[5] 丁一宁,董香军,王岳华.混杂纤维自密实混凝土的强度和抗弯韧性[J].建筑材料学报,2005,8(3):295-297.

[6] Van Gysel A. Studie Van Het Uittrekgedrag Van StaalvezelsIngebed in Een Cementgebonden Matrix Met Toepassing OpStaalvezelbeton Onderworpen aan Buiging[D]. Belgium: DoctoralThesis at University of Ghent,2000.

[7] 小林一辅.纤维补强混凝土[M].北京:中国铁道出版社,1985:40-45.

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