| 纤维增强混凝土抗冲击性能试验结果的统计分析 |
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| 引用本文： | 肖柏军,胡晓波,宁明哲,刘长文.纤维增强混凝土抗冲击性能试验结果的统计分析[J].铁道科学与工程学报,2007,4(2):44-47. |
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| 作者姓名： | 肖柏军 胡晓波 宁明哲 刘长文 |
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| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075;中南大学,土木建筑学院,湖南,长沙,410075;中南大学,土木建筑学院,湖南,长沙,410075;中南大学,土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 对钢-聚丙烯混杂纤维增强混凝土(SPHFRC)和钢纤维增强混凝土(FRC)试块冲击后的初裂强度和断裂强度进行统计分析,结果表明:SPHFRC的平均初裂强度、断裂强度比FRC的大;FRC和SPHFRC 2种样品的协方差远大于15%,不完全服从正态分布;为了保障测量值所在置信度区间的准确性,必须确保最少样品数量。
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| 关 键 词： | 统计分析 抗冲击 初裂强度 断裂强度 |
| 文章编号： | 1672-7029（2007）02-0044-04 |
| 修稿时间： | 2006-12-01 |
Statistical analysis of impact properties on a fiber-reinforced concrete |
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| XIAO Bai-jun,HU Xiao-bo,NING Ming-zhe,LIU Chang-wen.Statistical analysis of impact properties on a fiber-reinforced concrete[J].Journal of Railway Science and Engineering,2007,4(2):44-47. |
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| Authors: | XIAO Bai-jun HU Xiao-bo NING Ming-zhe LIU Chang-wen |
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| Institution: | School of Civil and Architectural Engineering, Central South University, Changsha 410075,China |
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| Abstract: | The initial cracking strength and ultimate fracture strength of steel-polypropylene hybrid fiber-reinforced concrete(SPHFRC) and steel fiber-reinforced concrete(FRC) were studied statistically.The average value of the initial cracking strength and ultimate fracture strength of SPHFRC were larger than those of FRC.The coefficients of variation of both specimens were far larger than 15%.Data from the experiments were not well satisfied with normal distribution.In order to control the errors caused by small quantity of specimens,it is necessary to assure the least of specimens. |
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| Keywords: | statistical analysis impact strength initial cracking strength ultimate fracture strength |
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