摘要
进行了 7根玻璃纤维布加固的钢筋混凝土梁剥离试验研究。试验结果表明 ,玻璃纤维布加固的钢筋混凝土梁抗弯承载力显著提高 ,发生剥离破坏的试验梁极限荷载相对地有所降低。根据试验结果 ,建立了纤维布端部粘结剪应力的试验分析方法 ,并对粘结剪应力的分布进行了分析。建立了纤维布端部粘结剪应力、剥离正应力及剥离荷载的计算方法 ,分析了参数对剥离荷载的影响 ,并给出了简化计算公式。
Seven reinforced concrete (RC) beams with epoxy-bonded glass fiber reinforced plastic (GFRP) sheets and two control RC beams were experimentally investigated. The results generally indicate that the flexural strength of the repaired beams is increased, but the ultimate load of beams with tension delamination failure is reduced relatively. An experimental method of bond shear stress is proposed to analyze distribution of shear stress according to experimental results. The distrubution of bond shear stress was aslo analyzed to confirm the experimental results. The analytical results show a good agreement with the experimental results and higher accuracy of calculation.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第12期75-80,86,共7页
China Civil Engineering Journal
