碳纤维板加固钢筋混凝土梁短期挠度的试验研究  

Experimental Study on Short-time Deflection of Reinforced Concrete Beams Strengthened with CFRP Board

作　　者：徐芸[1,2] 蔡锦堂[3] 徐荫[3] 沈宝云[1] 顾晓静[1] 

机构地区：[1]九江学院土木工程与城市建设学院,江西九江332005 [2]武汉大学土木建筑工程学院,湖北武汉430072 [3]嘉兴学院建筑工程学院,浙江嘉兴314001

出　　处：《华中科技大学学报（城市科学版）》2008年第4期192-195,222,共5页Journal of Huazhong University of Science and Technology

摘　　要：本文对钢筋混凝土梁底粘贴碳纤维板加固进行了试验研究,通过3根未加固梁的静载对比试验,着重探讨了6根加固的试验梁中一次和二次加载对混凝土梁刚度的影响,并建立了CFRP板加固梁截面挠度的计算公式。试验表明,粘贴碳纤维板可有效地加固钢筋混凝土结构,延缓了裂缝的开展和提高了梁的刚度,且计算结果与试验结果基本一致。The experimental study of RC beams strengthened with CFRP board is introduced in this paper. Experimental research of six beams strengthened with CFRP board on their tensile faces has been carried out to examine the effects of first and secondary loading on the stiffness by contrasting with three nonstrengthened beams. The formula for calculating the sectional short time deflection of the concrete beams strengthened with CFRP board has been established. The experimental results indicate that the RC structure can be strengthened effectively by using bonded CFRP board so that the development of crack and rigidity of beam can be controlled, and the results match well with that of predicted by the formula.

关 键 词：碳纤维板 加固 钢筋混凝土梁 挠度 

分 类 号：TU375.1[建筑科学—结构工程] TU317.2