CFRP加固桥梁RC短柱远程协同拟动力实验  

Remote Collaborative Pseudo-dynamic Testing of Carbon Fiber Reinforced Plastic Retrofitted Reinforcement Concrete Short Columns of Bridge

作　　者：蔡新江[1] 田石柱[1] 王大鹏[1] 肖岩[2,3] 范云蕾[2] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [2]湖南大学土木工程学院,湖南长沙410082 [3]南加州大学土木工程系,洛杉矶CA90089-2531

出　　处：《湖南大学学报（自然科学版）》2008年第11期6-11,共6页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金重点项目(50338020);国家自然科学基金重大研究计划重点项目(90715036)

摘　　要：针对已建的不能满足现有抗震规范设计要求的桥梁圆截面钢筋混凝土短柱,通过FRP加固后并在恒定轴力作用下,利用NetSLab实验平台进行国内首次整桥的远程协同拟动力实验.分析了2根CFRP加固剪切柱在地震荷载作用下的破坏现象、延性及耗能等.结果表明:CFRP加固不仅阻止了短柱的脆性剪切破坏,而且使破坏模式转化为延性弯曲破坏,使构件具有了稳定的滞回性能及耗能能力,有效地改善了短柱的抗震性能.Since the existing circle crossing reinforcement concrete short columns of bridge can＇ t satisfy new seismic codes, retrofitted by Fiber Reinforced Plastic and loaded with an invariable axial force, the first domestic remote collaborative pseudo-dynamic testing of a whole bridge was carried out with a platform named NetSLab. The damage phenomena, ductility and energy dissipation of two shearing columns retrofitted by Carbon Fiber Reinforced Plastic were analyzed. The results indicated that Carbon Fiber Reinforced Plastic not only prevented brittle shearing damage of reinforcement concrete short columns, but also changed the damage mode to ductile bending damage. The stable hysteretic properties, energy dissipation capacities and seismic performances of reinforcement concrete short columns were effectively improved.

关 键 词：桥梁钢筋混凝土短柱 CFRP加固 远程协同拟动力实验 NetSLab 

分 类 号：TU375.3[建筑科学—结构工程] TU317.1