碳纤维片加固钢筋混凝土简支梁桥对比性试验研究  

Experimental Research on Simply-supported Reinforced Concrete Bridge with Externally Bonded CFRP Reinforcement

作　　者：李松辉[1] 王松根[2] 刘立刚[2] 石学斌[2] 谢建章 

机构地区：[1]大连理工大学土建学院,辽宁大连116023 [2]山东省交通厅公路局,山东济南250002

出　　处：《公路交通科技》2003年第3期80-83,共4页Journal of Highway and Transportation Research and Development

基　　金：山东省交通厅科研项目

摘　　要：为深入研究粘贴碳纤维片加固钢筋混凝土桥梁的加固效果,结合山东省某桥梁大修工程,在旧引桥简支T梁下缘粘贴4层碳纤维布以提高其正截面强度,并对试验孔分别进行了加固前后的对比性荷载试验,检测结果表明,粘贴碳纤维片可明显增加破损主梁的抗弯刚度,改善梁底混凝土应变水平,有效抑制混凝土开裂。Strengthening concrete structure through externally bonding of CFS is a new structural strengthening method. Many researchers focused on experiments in labs, but there are a few have been combined with practical bridge engineering. Based on the bridge repairing in Shandong, experiment was carried out to further study the effect of reinforced concrete bridges with externally bonded CFS. The experiment results indicate that strengthening with CFS can not only enhance the stiffness of weakened girders, but also decrease the number of cracks on the surface of girders and reduce the strain level on the bottom of girders.

关 键 词：碳纤维片 碳纤维增强塑料 CFRP 桥梁加固 现场试验 钢筋混凝土简支梁桥 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]