BEHAVIOR OF REINFORCED CONCRETE CRACK-SHORT COLUMNS STRENGTHENED WITH CFRP
Numerous examples of shear failure in reinforced concrete(R/C) short columns have been reported during recent earthquakes in China and other earthquake countries. There are quite large numbers of existing reinforced concrete (R/C) short columns which are expected to fail in brittle shear failure mode during earthquakes. In order to develop an effective seismic shear strengthening method for improving the earthquake behavior of these R/C 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 other one 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.
Cracked short columns CFRP Strengthen Seismic behavior
Xiang Liu Wei-Lun Wang Fu-Bo Cao Peng Gao
Architecture and Civil Engineering School,UST Inner Mongolia 014010,P.R. China Shenzhen Key Lab on Durability of Civil Engineering,Shenzhen University,Guangdong,518060,P.R.China Architecture and Civil Engineering School,UST Inner Mongolia 014010,P.R.China
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
540-545
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）