碳纤维增强复合材料加固受损混凝土短柱的研究及分析  

SEISMIC BEHAVIOR OF REINFORCED CONCRETE CRACK-SHORT COLUMNS STRENGTHENED WITH CFRP

作　　者：王晨霞[1,2] 明文卉[3] 

机构地区：[1]南京航空航天大学土木系,南京210016 [2]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [3]包头市规划局,内蒙古包头014030

出　　处：《工业建筑》2011年第10期15-19,共5页Industrial Construction

基　　金：深圳市土木工程重点实验室资助项目(SZDCCE09-08);内蒙古自然科学基金资助项目(200711020701)

摘　　要：为了探索有效的钢筋混凝土短柱的加固方法,对4个短柱在轴向力和低周反复荷载作用下进行加固试验。3个试件受低周反复荷载作用开裂后持荷用碳纤维增强复合材料CFRP加固,另一个试件不作加固进行对比试验。试验研究了轴压比及加固前裂缝宽度两因素对短柱加固后性能的影响。试验结果表明,开裂钢筋混凝土短柱在用CFRP加固后,不仅增加了短柱的极限承载力,还可以避免脆性破坏。研究还表明CFRP加固钢筋临近屈服混凝土短柱,其承载力没有提高。In order to develop an effective seismic shear strengthening method for improving the earthquake behavior of RC short columns, experimental studies are conducted by using four beam-column sub assemblage specimens with a short column. Three short columns of these specimens are strengthened by CFRP in loading, while the other is without any strengthening. All the specimens are tested under a constant gravity load and alternately repeated lateral forces. Test results demonstrate that if the short column is strengthened by CFRP, then brittle shear failure does not occur and the column can develop its ultimate flexural moment capacity. It is also shown by tests that the proposed strengthening method is applicable to repair and rehabilitate the damaged short columns failed in the brittle shear mode.

关 键 词：震损短柱 碳纤维片材 加固 抗震性能 

分 类 号：TU375.3[建筑科学—结构工程]