| 体外预应力CFRP筋混凝土梁正截面抗弯试验研究 |
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| 引用本文： | 王新定,戴航,丁汉山,叶见曙.体外预应力CFRP筋混凝土梁正截面抗弯试验研究[J].东南大学学报(自然科学版),2009,39(3). |
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| 作者姓名： | 王新定 戴航 丁汉山 叶见曙 |
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| 作者单位： | 1. 东南大学交通学院,南京,210096
2. 东南大学土木学院,南京,210096 |
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| 摘 要： | 为研究体外预应力CFRP筋混凝土结构的正截面抗弯特性,研制了CFRP后张预应力筋夹片式锚具,对1片体外CFRP筋直线布置体外预应力混凝土梁和2片体外CFRP筋曲线布置体外预应力混凝土梁进行了正截面抗弯试验研究.试验结果表明:体外预应力CFRP筋混凝土梁受力过程与体外预应力钢筋混凝土梁有较多相似之处;跨中设一转向块的体外预应力CFRP筋混凝土梁的开裂荷载和极限承载力均比不设转向块的体外预应力CFRP筋混凝土梁要大,而跨中极限挠度则比不设转向块的体外预应力CFRP筋混凝土梁要小.在跨中设置转向块,可有效提高体外预应力CFRP筋混凝土梁的极限抗弯承载能力.按所推导的体外预应力CFRP筋混凝土梁的极限抗弯承载力理论公式,计算值与试验实测值吻合良好.
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| 关 键 词： | CFRP筋 体外预应力 抗弯试验 承载力 |
Experimental study on flexural behaviour of concrete beams prestressed with external CFRP tendons |
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| Wang Xinding,Dai Hang,Ding Hanshan,Ye Jianshu.Experimental study on flexural behaviour of concrete beams prestressed with external CFRP tendons[J].Journal of Southeast University(Natural Science Edition),2009,39(3). |
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| Authors: | Wang Xinding Dai Hang Ding Hanshan Ye Jianshu |
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| Institution: | Wang Xinding1 Dai Hang2 Ding Hanshan2 Ye Jianshu1(1 School of Transportation,Southeast University,Nanjing 210096,China) (2 School of Civil Engineering,China) |
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| Abstract: | In order to study the flexural behaviour of concrete structures prestressed with external carbon fiber reinforced polymer(CFRP) tendons,a new wedge-shaped anchor for the CFRP post-tensioning prestressing tendon was developed.The flexural behaviour of a concrete beam prestressed with external CFRP tendons without any deviator and two concrete beams with a single deviator provided at midspan was carried out.The experimental results show that the flexural behaviour of concrete beams prestressed with external C... |
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| Keywords: | carbon fiber reinforced polymer tendons external prestressing bending test load carrying capacity |
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