| 加固混凝土梁的GFRP板抗拉强度与界面切应力 |
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| 引用本文： | 戈晓霞,张东焕,王利民,何敏,任鹏.加固混凝土梁的GFRP板抗拉强度与界面切应力[J].玻璃钢/复合材料,2009,209(6):5-11. |
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| 作者姓名： | 戈晓霞 张东焕 王利民 何敏 任鹏 |
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| 作者单位： | 1. 山东理工大学交通与车辆工程学院力学部,山东淄博,255049
2. 山东理工大学交通与车辆工程学院力学部,山东淄博,255049;青岛理工大学理学院,山东青岛,266033 |
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| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
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| 摘 要： | 为了研究玻璃纤维布的拉伸强度，通过5个涂浸渍胶和未涂胶的试件进行了轴向拉伸实验。结果表明，环氧
树脂不仅有粘贴和保护玻璃纤维布的作用，而且能够提高其拉伸强度。为进一步分析玻璃纤维强化塑料(GFRP)板对
加固结构的影响，特制备9个单层GFRP板加固混凝土梁试件，对其进行四点弯曲加载实验，并在其中一个试件的
GFRP表面粘贴了应变片，进行电测跟踪测试，从而得到结构损伤破坏过程曲线和应变片粘贴处的应变值。对比两种
实验得知，GFRP板轴向拉伸强度比四点弯曲实验得到的强度大。又由测试数据和力学模型，得到FRP板轴力以及与
混凝土间界面上的切应力分布曲线。
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| 关 键 词： | 混凝土梁 玻璃纤维强化板（GFRP） 拉伸强度 电测 切应力分布 |
TENSION STRENGTH AND SHEAR STRESS DISTRIBUTION OF GFRP STRENGTHENING CONCRETE BEAM |
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| GE Xiao-xia,ZHANG Dong-huan,WANG Li-min.TENSION STRENGTH AND SHEAR STRESS DISTRIBUTION OF GFRP STRENGTHENING CONCRETE BEAM[J].Fiber Reinforced Plastics/Composites,2009,209(6):5-11. |
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| Authors: | GE Xiao-xia ZHANG Dong-huan WANG Li-min |
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| Affiliation: | GE Xiao-xia1,ZHANG Dong-huan1,WANG Li-min1,2 (1.Department of Mechanics,School of Traffic , Vehicle Engineering,Sh,ong University of Technology,Zibo 255049,China,2. College of Science,Qingdao Technological University,Qingdao 266033,China) |
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| Abstract: | To investigate the tension strength of glass fiber,axial tension experiments were carried out for five specimens with or without impregnating compounds. The experiments indicated that the epoxy resin could not only stick and protect glass fiber plates,but also increase its tensile strength. To deeply understand mechanical behavior of GFRP strengthening concrete structure,nine specimens were tested by beams' four-point bending experiments. One of the specimens was stick with strain gauges for tracking the fa... |
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| Keywords: | concrete beam GFRP plates tension strength electrical measurement shear stress distribution |
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