| 预应力CFRP板加固钢板轴心受拉行为分析 |
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| 引用本文： | 叶华文,UMMENHOFER T,强士中.预应力CFRP板加固钢板轴心受拉行为分析[J].中国公路学报,2010(1). |
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| 作者姓名： | 叶华文 UMMENHOFER T 强士中 |
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| 作者单位： | 西南交通大学土木工程学院;布伦瑞克工业大学建筑与结构修复研究所; |
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| 基金项目： | 国家留学基金项目(2007104769) |
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| 摘 要： | 首先分析比较预应力的施加方法和锚固方式,然后基于一维线弹性理论,对预应力碳纤维增强复合材料(CFRP)板加固钢板体系的受力过程进行分阶段分析,得到在张拉预应力和受载工况下CFRP板、钢板、胶层的应力分布解析式及CFRP有效粘结长度公式、弹性压缩带来的预应力损失值;最后利用ANSYS中Solid95三维单元进行有限元模拟对比分析。结果表明:直接张拉CFRP板能有效控制预应力及其加固效果,比间接法施加预应力有更多优势;采用高强螺栓连接的平板夹具锚传递大部分荷载,改善了非预应力粘贴加固界面的薄弱特点;该理论分析及有限元模型是可靠、有效的。
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| 关 键 词： | 桥梁工程 预应力CFRP板 线弹性理论 加固 应力分布 锚固 |
Analysis of Axial Tension Behavior of Steel Plate Reinforced by Prestressed CFRP Plate |
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| YE Hua-wen,UMMENHOFER T,QIANG Shi-zhong.Analysis of Axial Tension Behavior of Steel Plate Reinforced by Prestressed CFRP Plate[J].China Journal of Highway and Transport,2010(1). |
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| Authors: | YE Hua-wen UMMENHOFER T QIANG Shi-zhong |
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| Institution: | YE Hua-wen1,2,UMMENHOFER T2,QIANG Shi-zhong1(1. School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China,2. Institute for Rehabilitation of Buildings , Structures,Technical University of Braunschweig,Braunschweig 38106,Niedersachsen,Germany) |
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| Abstract: | Firstly,the method to introduce the prestress and the mode to anchor the prestressed carbon fiber reinforcement polymer (CFRP) plate were analyzed. Furthermore,the forcing processes of steel plates strengthened by prestressed CFRP plate were analyzed under different load cases based on the 1-D linear elastic theory. The stress distribution formulae of CFRP plate,steel plate and adhesive layer under tensile stress and loading cases,the effective bond length formulae of CFRP and prestress loss due to visco-el... |
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| Keywords: | bridge engineering prestressed CFRP plate linear elastic theory reinforcement stress distribution anchor |
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