| 砂浆粘结GFRP土钉抗拔承载力室内试验研究 |
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| 引用本文： | 马崇武,刘忠玉,周高永.砂浆粘结GFRP土钉抗拔承载力室内试验研究[J].郑州大学学报(工学版),2011,32(2). |
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| 作者姓名： | 马崇武 刘忠玉 周高永 |
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| 作者单位： | 1. 东莞理工学院建筑工程系,广东东莞,523808
2. 郑州大学土木工程学院,河南郑州,450001 |
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| 基金项目： | 广东省科技计划项目(2007B060401021); 东莞市科技计划项目(2008108101025) |
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| 摘 要： | 为探索GFRP筋代替钢筋用作土钉抗拉材料的可行性,自制了试验模型箱,通过室内拉拔试验,探讨了拉拔过程中砂浆粘结GFRP土钉钉头位移的变化情况以及极限抗拔力随上覆压力的变化规律.试验结果表明.砂浆粘结GFRP土钉的拉拔特性类似于砂浆粘结钢筋土钉,且钉头位移和拉拔荷栽之间的关系可用双曲线来描述.此外,在进行土钉抗拔承裁力计算时,对密实填土宜考虑钉土界面处的剪胀效应.
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| 关 键 词： | 土钉 室内试验 玻璃纤维增强塑料 抗拔承载力 剪胀 |
Laboratory Experimental Study on Pullout Resistance of Mortar Grouted GFRP Soil Nails |
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| MA Chong-wu
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LIU Zhong-yu
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ZHOU Gao-yong.Laboratory Experimental Study on Pullout Resistance of Mortar Grouted GFRP Soil Nails[J].Journal of Zhengzhou University: Eng Sci,2011,32(2). |
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| Authors: | MA Chong-wu LIU Zhong-yu ZHOU Gao-yong |
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| Affiliation: | MA Chong-wu1,LIU Zhong-yu2,ZHOU Gao-yong2(1.Department of Civil Engineering,Dongguan University of Technology,Dongguan 523808,China,2.School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | In order to verify the applicability of GFRP bar in soil nailing design,a large-scale laboratory apparatus have been built and used in the pullout experiments of mortar grouted glass fiber reinforced polymer(GFRP) soil nails.The displacements of nail head under different pullout loads are measured,and the ultimate pullout loads under different overburden pressures are obtained.The experimental results show that the pullout behavior of mortar grouted GFRP soil nails is similar to that of mortar grouted steel... |
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| Keywords: | soil nailing laboratory experiment glass fiber reinforced polymer(GFRP) pullout resistance dilatancy |
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