Reinforced Concrete Short Columns
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 strengthening by steel plates and concrete, while other one is without any steel plate 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 a welded square tube and concrete, 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 using steel plates and concrete is applicable to repair and rehabilitate the damaged short columns failed in the brittle shear mode.
Reinforced concrete Short columns Steel plate Shear strength Repair
Gentian Zhao Shan Wang Xin Wan
Structural Engineering Research Institute, Inner Mongolia University of Science & Technology, China School of Architecture & Civil Engineering, Inner Mongolia University of Science & Technology, China
国际会议
The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)
成都
英文
208-211
2009-05-10（万方平台首次上网日期，不代表论文的发表时间）