| 层内混杂纤维布约束混凝土柱轴压性能试验研究 |
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| 引用本文： | 徐永朝,李建辉,邓宗才.层内混杂纤维布约束混凝土柱轴压性能试验研究[J].国防交通工程与技术,2011,9(2):7-11. |
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| 作者姓名： | 徐永朝 李建辉 邓宗才 |
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| 作者单位： | 1. 北京工业大学城市与工程防灾减灾省部共建教育部重点实验室,北京,100124
2. 中国建筑总公司五局一公司,北京,100024 |
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| 摘 要： | 试验采用三种纤维(芳纶纤维、聚脂纤维和尼龙纤维)混杂而成的IHFRP布.通过IHFRP布约束混凝土圆柱体、棱柱体的轴压试验,研究了其破坏形态、应力一应变全曲线、峰值应力、极限应变、延性性能.试验结果表明:IHFRP显著提高了柱的承载力,对于相同层数纤维布约束试件随着混杂纤维布中芳纶纤维含量的增加,承载力增长越显著;IH...
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| 关 键 词： | 层内混杂纤维布(IHFRP) 约束混凝土 轴压性能 力学性能 延性 |
An Experimental Study of the Mechanical Properties of Concrete Columns Confined with IHFRP Under Axial Pressure |
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| Xu Yongchao,Li Jianhui,Deng Zongcai.An Experimental Study of the Mechanical Properties of Concrete Columns Confined with IHFRP Under Axial Pressure[J].Traffic Engineering and Technology for National Defence,2011,9(2):7-11. |
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| Authors: | Xu Yongchao Li Jianhui Deng Zongcai |
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| Institution: | 1.The Provincial-Ministerial Joint Key Laboratory of Urban Security and Disasters-Preventing Engineering,Beijing University of Industrial Technology,Beijing China,100124;2.The First Company of the Fifth Bureau of the Construction Corporation of China,Beijing China,100024) |
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| Abstract: | The test adopts IHFRP（Inner Hybrid Fiber Reinforced Plastics） sheets fabricated with PPTA,PET and PA intermixing.By the tests of concrete circular and quadrate columns confined with IHFRP under axial pressure,the failure configuration,stress-strain curve,bearing capacity,peak strain,elastic modulus and ductility of such concrete columns are analyzed and studied in the paper,the results of which show：①IHFRP is found to be able noticeably to improve the bearing capacity of concrete square columns.The bearing capacity of specimens confined with IHFRP increases with the increase of the content of PPTA in IHFRP.②concrete quadrate columns,which are confined with IHFRP,are found to be better than the confined concrete circular columns in improving the capacity of the specimen deformation.③ IHFRP is found to be able to improve the ductility of concrete circular columns noticeably.The deformation property of confined concrete quadrate columns can be illustrated with the ductility indices. |
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| Keywords: | Inner Hybrid Fiber Reinforced Plastics（IHFRP） confined concrete axial compression mechanical behavior ductility |
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