混杂纤维加固混凝土梁抗弯性能试验研究  

Experimental Researches of the Flexural Performance of Concrete Beams Reinforced with Hybrid Fibers

作　　者：吴辉琴[1] 程建棚[1] 潘杰松 田毅[1] 王鹏[1] 

机构地区：[1]广西工学院土木建筑工程系,广西柳州545006 [2]柳州市建设投资开发有限责任公司,广西柳州545001

出　　处：《广西工学院学报》2011年第2期38-42,共5页Journal of Guangxi University of Technology

基　　金：广西教育厅科技项目(200911LX187);广西教育厅研究生科研创新项目(2009105940814M02)资助

摘　　要：考虑纤维加固量、加固位置以及加载方式等影响因素,设计制作了10根纤维材料加固梁,研究混杂纤维(HFRP)加固混凝土梁的抗弯性能和加固效益.结果表明:HFRP加固梁不仅能提高碳纤维(CFRP)的强度利用率,而且能较好地发挥玻璃纤维(GFRP)的延伸率,从而同时提高加固梁的抗弯承载力和延性;采用侧面加固方法与底面加固方法补强效果相差不大,但前者抑制裂缝产生与发展的效果却比较明显;持载作用下加固梁比直接加载作用下加固梁的补强作用大.上述结论对实际工程加固具有明显的指导意义.Considering the amount of fiber reinforcement,reinforcement location and loading and other factors,ten concrete beams reinforced with fibers were designed to study the flexural performance and reinforcement efficiency of concrete beams reinforced with hybrid fiber（HFRP）.The results show that concrete beams reinforced with HFRP can not only improve the intensity utilization of the carbon fiber（CFRP） but also make the elongation of the glass fiber（GFRP） play a better role so that the the flexural bearing capacity and ductility of the reinforced beams can be improved.The effects of side reinforcement and bottom one are similar,but for the former one,its effects made and developed by suppressing cracks are obvious and there is more reinforcement for reinforced beams under load than under compression.The above conclusions have obvious significances to the actual engineeing reinforcement.

关 键 词：CFRP/GFRP混杂纤维 加固 混凝土梁 抗弯性能 

分 类 号：TU502[建筑科学—建筑技术科学]