粘贴预应力纤维片材加固混凝土梁截面非线性分析  

Nonlinear analysis of RC beams strengthened by bonding prestressed FRP laminate

作　　者：肖菲菲[1] 周朝阳[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2005年第5期41-44,共4页Journal of Railway Science and Engineering

基　　金：铁道部科技研究开发计划项目(2002G043)

摘　　要：与简单粘贴纤维片材加固法相比,采用粘贴预应力片材加固技术能更充分地利用纤维片材的强度,更有效地改善构件的使用性能,因而逐渐受到重视。采用条带划分法,运用C语言编程,对粘贴预应力碳纤维布加固混凝土梁截面的非线性受力性能(包括弯曲破坏形态和承载能力)进行了数值模拟分析。与试验结果的比较表明,应用该计算方法和程序,能够较好地反映外贴预应力纤维片材加固混凝土梁截面的试验现象和规律。基于分析结果,得到了一些有意义的结论。Compared with conventional strengthening method by simply bonding FRP laminate, prestressed FRP lami- nate can increase the strength of FRP and improve the performance of RC beams more effectively, so this new tech- nique is recognized gradually. With FEM and corresponding program written, numerical analyses are presented for sec- tions of RC beams strengthened with bonded prestressed FRP Laminate. Comparison with experimental results shows the method and program can predict the flexural failure modes, load - carrying capacity and other nonlinear behavior of the tested specimens. And some valuable conclusions are drawn from the results.

关 键 词：纤维片材 预应力 混凝土梁 非线性分析 加固 弯曲 

分 类 号：TU375.1[建筑科学—结构工程] TU746.3