| GFRP变形筋粘结性能试验研究 |
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| 引用本文： | 郝庆多,张志春,王言磊,王勃,欧进萍.GFRP变形筋粘结性能试验研究[J].武汉理工大学学报(交通科学与工程版),2007,31(5):784-787. |
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| 作者姓名： | 郝庆多 张志春 王言磊 王勃 欧进萍 |
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| 作者单位： | 1. 哈尔滨工业大学土木工程学院,哈尔滨,150090
2. 哈尔滨工业大学土木工程学院,哈尔滨,150090;大连理工大学,大连,116024 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 基于CSA标准,利用30个拉拔试件研究了8种不同表面形式的GFRP变形筋与混凝土之间的粘结性能,比较了不同表面形式GFRP变形筋的粘结强度,并确定了GFRP变形筋的最优表面形式.试验结果表明:(1)试件的破坏形式为肋的剪切破坏和肋的脱落,混凝土并没有发生破坏;(2)GFRP变形筋的粘结强度较高,粘结强度为7.01~12.25M Pa;(3)最佳肋间距不应超过直径的2.5倍,肋高度应不小于直径的3%.
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| 关 键 词： | GFRP变形筋 一体化肋 粘结性能 拉拔试验 最优表面形式 |
| 修稿时间： | 2007-05-13 |
Experimental Study on Bond Behavior of Deformed GFRP Rebars |
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| Hao Qingduo,Zhang Zhichun,Wang Yanlei,Wang Bo,Ou Jinping.Experimental Study on Bond Behavior of Deformed GFRP Rebars[J].journal of wuhan university of technology(transportation science&engineering),2007,31(5):784-787. |
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| Authors: | Hao Qingduo Zhang Zhichun Wang Yanlei Wang Bo Ou Jinping |
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| Institution: | 1.School of Civil Engineering, Harbin Institute of Technology, Harebin 150090;2.Dalian University of Technology, Dalian 116024 |
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| Abstract: | The outer surfaces of deformed Glass Fiber Reinforced Polymer(GFRP) rebars is the main factor affecting the bond behavior between GFRP rebars and concrete.Based on the CSA(Canadian Standards Association) criterion,30 pull out specimens is used to study the bond behavior of deformed GFRP rebars with 8 different outer surfaces to concrete.The average bond strength of them is compared and the optimal outer surface is fixed at last.The result of this study shows that:(1) the failure mode of all specimens is the shear failure and desquamation of the ribs,no damage is found in concrete;(2) the bond strength of deformed GFRP rebars improves obviously,it is from 7.01 MPa to 12.25 MPa;(3) the optimal spacing of ribs should be less than 2.5 times of the rebar's diameter,and the height of ribs should be more than 3% of the diameter. |
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| Keywords: | deformed GFRP rebars integral rib bond behavior pull-out test optimal surface configuration |
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