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PVA-ECC加固RC足尺梁受弯性能试验研究
引用本文:卜良桃,万长胜,尹鹏.PVA-ECC加固RC足尺梁受弯性能试验研究[J].湖南大学学报(自然科学版),2010,37(1).
作者姓名:卜良桃  万长胜  尹鹏
作者单位:湖南大学,土木工程学院,湖南,长沙,410082
基金项目:湖南省科技厅科研资助项目(2007CK3066)
摘    要:对6根足尺聚乙烯醇纤维水泥(PVA-ECC)加固的钢筋混凝土梁进行了正截面抗弯一次和二次受力的试验研究.通过与另1根同配置未加固钢筋混凝土梁的试验结果的对比,研究了加固梁纵向加固配筋率对抗弯承载力和变形能力的影响.试验采用三面U型加固形式,量测试验梁裂缝分布形态、荷载-挠度曲线、钢筋和混凝土应变发展规律等.试验结果表明PVA-ECC钢筋网薄层加固是一种有效的加固方法,能够显著地提高钢筋混凝土梁的抗弯承载力、截面刚度以及抗裂性能.

关 键 词:聚乙烯醇纤维水泥  钢筋混凝土梁  加固  二次受力  

Experimental Study of Full-scale RC Beam Reinforced by Polyvinyl Alcohol-engineered Cementitious Composite Mortar in Flexure
BU Liang-tao,WAN Chang-sheng,YIN Peng.Experimental Study of Full-scale RC Beam Reinforced by Polyvinyl Alcohol-engineered Cementitious Composite Mortar in Flexure[J].Journal of Hunan University(Naturnal Science),2010,37(1).
Authors:BU Liang-tao  WAN Chang-sheng  YIN Peng
Institution:College of Civil Engineering;Hunan Univ;Changsha;Hunan 410082;China
Abstract:An experimental study was conducted on the flexural behavior of reinfoced concrete beam strengthened by Polyvinyl Alcohol-Engineered Cementitious Composite(PVA-ECC) mortar subjected to one-off load and secondary load.Based on the comparison of the test results of six beams reinforced by PVA-ECC steel mesh and one general beams,the effect of tension reinforcement ratio on the flexural strength and deflections capacity was studied.Beams were reinforced with U-shape,and crack distribution,load-max deflection,s...
Keywords:polyvinyl alcohol-engineered cementitious composite  RC beam  strengthening  secondary load  
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