(同济大学结构工程与防灾研究所 上海  200092)
［提要］通过6根连续梁研究了用CFRP加固T形截面翼缘板改善钢筋混凝土连续梁负弯矩的受弯性能。研究结果表明，T形截面翼缘板粘贴CFRP可以提高连续梁负弯矩的开裂荷载、极限荷载，当粘贴层数≥3时，连续梁由弯曲破坏转变为剪切破坏，在4倍翼板厚度范围内粘贴是有效可行的。粘贴CFRP层数相同时，翼板厚对结构的极限荷载无影响。
［关键词］ CFRP 连续梁 裂缝 受拉翼缘
Experimental Study on Continuous Beams Strengthened with CFRP on Flange Girth of Part in Tension/Yuan Tingpeng, Lu Zhoudao, Sheng Qinzhu (Research Institute of Structural Eng. a
nd Disaster Reduction, Tongji Univ., Shanghai 200092, China)
Abstract:Flexural behavior of six Tshape continuous reinforced concrete beams strengthened with carbon fiber reinforced polymer(CFRP) on flange girth in tension was tested. The results show that crack load and ultimate load can be enhanced for continuous reinforced concrete beams strengthened with CFRP. When CFRP is more than two layers, flexural failure of continuous beams converts to shear failure. It is available to paste CFRP in the 4 times sickness of flange girth. Besides, the sickness of flange girth has little effect on ultimate load with the same layers of CFRP.
Keywords:CFRP; continuous beam; crack; flange girth in tension