- 摘 要
-
(同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所 上海 200092)
［提要］通過6根連續(xù)梁研究了用CFRP加固T形截面翼緣板改善鋼筋混凝土連續(xù)梁負(fù)彎矩的受彎性能。研究結(jié)果表明，T形截面翼緣板粘貼CFRP可以提高連續(xù)梁負(fù)彎矩的開裂荷載、極限荷載，當(dāng)粘貼層數(shù)≥3時(shí)，連續(xù)梁由彎曲破壞轉(zhuǎn)變?yōu)榧羟衅茐模?倍翼板厚度范圍內(nèi)粘貼是有效可行的。粘貼CFRP層數(shù)相同時(shí)，翼板厚對結(jié)構(gòu)的極限荷載無影響。
［關(guān)鍵詞］ CFRP 連續(xù)梁 裂縫 受拉翼緣
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 Tshape 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
- 下載地址
-
