摘要
外贴纤维增强塑料 (FRP)对混凝土结构进行补强加固 ,近些年在国内外受到广泛的重视。由于这种材料用在混凝土结构补强加固上时间不长 ,其长期加固性能仍然没有得到证实。尤其是北方较寒冷地区 ,冻融循环是造成结构破坏的主要原因之一 ,因此研究冻融循环对纤维增强塑料加固混凝土结构的影响十分有意义。本文采用快速冻融试验方法 ,研究冻融循环对玻璃纤维布材料、玻璃纤维布与混凝土粘结强度的影响 ,并研究冻融循环对玻璃纤维布加固混凝土梁受力性能的影响。
External bonding fiber reinforced plastics (FRP)has been increasingly used to repair the concrete structures in recent years.But its long term behavior is uncertain due to its short time application in repairing concrete structures.The freeze-thaw action is one of main reasons causing the destruction of concrete structures,especially in the cold areas of the North,so the study on the freeze-thaw action affecting the concrete structures strengthened by GFRP is very important.Based on the fast freeze-thaw tests,materials properties of the GFRP and bond strength of GFRP and concrete after the freeze-thaw action are analyzed.In addition,the influence of the freeze-thaw action on the concrete beams strengthened by GFRP has been studied.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第4期104-110,共7页
China Civil Engineering Journal
基金
辽宁省交通厅重点课题"桥梁加固改造新技术
新工艺研究"
编号 1 01
关键词
玻璃纤维布
冻融循环
混凝土梁
glass fiber reinforced plastic
the freeze-thaw action
concrete beam
