东南大学学报（英文版）Issue(1)：77-83,7.DOI:10.3969/j.issn.1003-7985.2014.01.015
FRP 加固锈蚀钢筋混凝土梁的受弯性能分析
Flexural behaviors of FRP strengthened corroded RC beams
摘要
Abstract
The flexural behavior of eight FRP fiber reinforced polymer strengthened RC reinforced concrete beams with different steel corrosion rates are numerically studied by Ansys finite element software.The influences of the corrosion rate on crack pattern failure mechanism ultimate strength ductility and deformation capacity are also analyzed.Modeling results show that the beams with low corrosion rates fail by the crushing of the concrete in the compression zone.For the beams with medium corrosion rates the bond slip between the concrete and the longitudinal reinforcement occurs after steel yielding and the beams finally fail by the debonding of the FRP plates.For the beams with high corrosion rates the bond slip occurs before steel yielding and the beams finally fail by the crushing of the concrete in the compression zone.The higher the corrosion rates of the longitudinal reinforcement the more the carrying capacity of FRP strengthened RC beams reduces.The carrying capacity of RCB-1 the corrosion rate is 0 is 115 kN and the carrying capacity of RCB-7 the corrosion rate is 20% is 42 kN.The deformation capacity of FRP strengthened corroded RC beams is higher than that of FRP strengthened uncorroded RC beams. The ultimate deflection of RCB-1 and RCB-7 are 20 mm and 35 mm respectively and the ultimate deflection of RCB-5 the corrosion rate is 10% reaches 60 mm.关键词
锈蚀钢筋混凝土梁/FRP/加固/数值分析/受弯性能Key words
corroded/reinforced concrete beam/FRP/fiber reinforced polymer/strengthening/numerical/analysis flexural behavior分类
建筑与水利引用本文复制引用
潘金龙,王路平,袁方,黄毅芳..FRP 加固锈蚀钢筋混凝土梁的受弯性能分析[J].东南大学学报（英文版）,2014,(1):77-83,7.基金项目
The National Natural Science Foundation of China No．51278118 Scientific and Technological Research Project of Min-istry of Education No．113028A the Natural Science Foundation of Jiangsu Province No．BK2012756 the Program for Special Talents in Six Fields of Jiangsu Province No．2011-JZ-010． （）
